mirror of
https://github.com/freebsd/freebsd-src
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Update tzcode to 2024a.
MFC after: 3 weeks
Sponsored by: Klara, Inc.
(cherry picked from commit 46c599340f)
This commit is contained in:
Dag-Erling Smørgrav
parent
bfafc6a86d
commit
16349f296b
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@ -1,7 +1,25 @@
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# Make and install tzdb code and data.
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# This file is in the public domain, so clarified as of
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# 2009-05-17 by Arthur David Olson.
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# Request POSIX conformance; this must be the first non-comment line.
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.POSIX:
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# On older platforms you may need to scrounge for a POSIX-conforming 'make'.
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# For example, on Solaris 10 (2005), use /usr/sfw/bin/gmake or
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# /usr/xpg4/bin/make, not /usr/ccs/bin/make.
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# To affect how this Makefile works, you can run a shell script like this:
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#
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# #!/bin/sh
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# make CC='gcc -std=gnu11' "$@"
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#
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# This example script is appropriate for a pre-2017 GNU/Linux system
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# where a non-default setting is needed to support this package's use of C99.
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#
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# Alternatively, you can simply edit this Makefile to tailor the following
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# macro definitions.
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###############################################################################
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# Start of macros that one plausibly might want to tailor.
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# Package name for the code distribution.
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PACKAGE= tzcode
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@ -35,7 +53,7 @@ DATAFORM= main
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LOCALTIME= Factory
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# The POSIXRULES macro controls interpretation of POSIX-like TZ
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# The POSIXRULES macro controls interpretation of POSIX-2017.1-like TZ
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# settings like TZ='EET-2EEST' that lack DST transition rules.
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# If POSIXRULES is '-', no template is installed; this is the default.
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# Any other value for POSIXRULES is obsolete and should not be relied on, as:
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@ -191,8 +209,9 @@ UTF8_LOCALE= en_US.utf8
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# On some hosts, this should have -lintl unless CFLAGS has -DHAVE_GETTEXT=0.
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LDLIBS=
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# Add the following to the end of the "CFLAGS=" line as needed to override
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# defaults specified in the source code. "-DFOO" is equivalent to "-DFOO=1".
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# Add the following to an uncommented "CFLAGS=" line as needed
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# to override defaults specified in the source code or by the system.
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# "-DFOO" is equivalent to "-DFOO=1".
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# -DDEPRECATE_TWO_DIGIT_YEARS for optional runtime warnings about strftime
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# formats that generate only the last two digits of year numbers
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# -DEPOCH_LOCAL if the 'time' function returns local time not UT
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@ -234,11 +253,16 @@ LDLIBS=
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# -DHAVE_UNISTD_H=0 if <unistd.h> does not work*
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# -DHAVE_UTMPX_H=0 if <utmpx.h> does not work*
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# -Dlocale_t=XXX if your system uses XXX instead of locale_t
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# -DPORT_TO_C89 if tzcode should also run on C89 platforms+
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# -DPORT_TO_C89 if tzcode should also run on mostly-C89 platforms+
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# Typically it is better to use a later standard. For example,
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# with GCC 4.9.4 (2016), prefer '-std=gnu11' to '-DPORT_TO_C89'.
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# Even with -DPORT_TO_C89, the code needs at least one C99
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# feature (integers at least 64 bits wide) and maybe more.
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# -DRESERVE_STD_EXT_IDS if your platform reserves standard identifiers
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# with external linkage, e.g., applications cannot define 'localtime'.
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# -Dssize_t=long on hosts like MS-Windows that lack ssize_t
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# -DSUPPORT_C89 if the tzcode library should support C89 callers+
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# However, this might trigger latent bugs in C99-or-later callers.
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# -DSUPPRESS_TZDIR to not prepend TZDIR to file names; this has
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# security implications and is not recommended for general use
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# -DTHREAD_SAFE to make localtime.c thread-safe, as POSIX requires;
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@ -250,7 +274,7 @@ LDLIBS=
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# -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory;
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# the default is system-supplied, typically "/usr/lib/locale"
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# -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified
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# DST transitions for POSIX-style TZ strings lacking them,
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# DST transitions for POSIX.1-2017-style TZ strings lacking them,
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# in the usual case where POSIXRULES is '-'. If not specified,
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# TZDEFRULESTRING defaults to US rules for future DST transitions.
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# This mishandles some past timestamps, as US DST rules have changed.
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@ -270,11 +294,15 @@ LDLIBS=
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# -DZIC_MAX_ABBR_LEN_WO_WARN=3
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# (or some other number) to set the maximum time zone abbreviation length
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# that zic will accept without a warning (the default is 6)
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# -g to generate symbolic debugging info
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# -Idir to include from directory 'dir'
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# -O0 to disable optimization; other -O options to enable more optimization
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# -Uname to remove any definition of the macro 'name'
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# $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking
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#
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# * Options marked "*" can be omitted if your compiler is C23 compatible.
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# * Options marked "+" are obsolescent and are planned to be removed
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# once the code assumes C99 or later.
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# once the code assumes C99 or later, say in the year 2029.
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#
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# Select instrumentation via "make GCC_INSTRUMENT='whatever'".
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GCC_INSTRUMENT = \
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@ -312,9 +340,10 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
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# guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this.
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# Similarly, if your system has a "zone abbreviation" field, define
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# -DTM_ZONE=tm_zone
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# and define NO_TM_ZONE to suppress any guessing. Although these two fields
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# not required by POSIX, a future version of POSIX is planned to require them
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# and they are widely available on GNU/Linux and BSD systems.
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# and define NO_TM_ZONE to suppress any guessing.
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# Although these two fields are not required by POSIX.1-2017,
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# POSIX 202x/D4 requires them and they are widely available
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# on GNU/Linux and BSD systems.
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#
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# The next batch of options control support for external variables
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# exported by tzcode. In practice these variables are less useful
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@ -324,7 +353,7 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
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# # -DHAVE_TZNAME=0 # do not support "tzname"
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# # -DHAVE_TZNAME=1 # support "tzname", which is defined by system library
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# # -DHAVE_TZNAME=2 # support and define "tzname"
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# # to the "CFLAGS=" line. "tzname" is required by POSIX 1988 and later.
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# # to the "CFLAGS=" line. "tzname" is required by POSIX.1-1988 and later.
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# # If not defined, the code attempts to guess HAVE_TZNAME from other macros.
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# # Warning: unless time_tz is also defined, HAVE_TZNAME=1 can cause
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# # crashes when combined with some platforms' standard libraries,
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@ -334,8 +363,8 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
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# # -DUSG_COMPAT=0 # do not support
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# # -DUSG_COMPAT=1 # support, and variables are defined by system library
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# # -DUSG_COMPAT=2 # support and define variables
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# # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by
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# # Unix Systems Group code and are required by POSIX 2008 (with XSI) and later.
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# # to the "CFLAGS=" line; "timezone" and "daylight" are inspired by Unix
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# # Systems Group code and are required by POSIX.1-2008 and later (with XSI).
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# # If not defined, the code attempts to guess USG_COMPAT from other macros.
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# #
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# # To support the external variable "altzone", add
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@ -353,10 +382,11 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
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# functions to be added to the time conversion library.
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# "offtime" is like "gmtime" except that it accepts a second (long) argument
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# that gives an offset to add to the time_t when converting it.
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# "offtime_r" is to "offtime" what "gmtime_r" is to "gmtime".
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# "timelocal" is equivalent to "mktime".
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# I.e., "offtime" is like calling "localtime_rz" with a fixed-offset zone.
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# "timelocal" is nearly equivalent to "mktime".
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# "timeoff" is like "timegm" except that it accepts a second (long) argument
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# that gives an offset to use when converting to a time_t.
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# I.e., "timeoff" is like calling "mktime_z" with a fixed-offset zone.
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# "posix2time" and "time2posix" are described in an included manual page.
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# X3J11's work does not describe any of these functions.
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# These functions may well disappear in future releases of the time
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@ -379,7 +409,7 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
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#
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# NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put
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# out by the National Institute of Standards and Technology
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# which claims to test C and Posix conformance. If you want to pass PCTS, add
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# which claims to test C and POSIX conformance. If you want to pass PCTS, add
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# -DPCTS
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# to the end of the "CFLAGS=" line.
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#
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@ -389,19 +419,33 @@ GCC_DEBUG_FLAGS = -DGCC_LINT -g3 -O3 -fno-common \
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# 53 as a week number (rather than 52 or 53) for January days before
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# January's first Monday when a "%V" format is used and January 1
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# falls on a Friday, Saturday, or Sunday.
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#
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# POSIX says CFLAGS defaults to "-O 1".
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# Uncomment the following line and edit its contents as needed.
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CFLAGS=
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#CFLAGS= -O 1
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# Linker flags. Default to $(LFLAGS) for backwards compatibility
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# to release 2012h and earlier.
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LDFLAGS= $(LFLAGS)
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# The name of a POSIX-like library archiver, its flags, C compiler,
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# linker flags, and 'make' utility. Ordinarily the defaults suffice.
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# The commented-out values are the defaults specified by POSIX.1-202x/D4.
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#AR = ar
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#ARFLAGS = -rv
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#CC = c17
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#LDFLAGS =
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#MAKE = make
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# For leap seconds, this Makefile uses LEAPSECONDS='-L leapseconds' in
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# submake command lines. The default is no leap seconds.
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LEAPSECONDS=
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# Where to fetch leap-seconds.list from.
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leaplist_URI = \
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https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list
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# The file is generated by the IERS Earth Orientation Centre, in Paris.
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leaplist_TZ = Europe/Paris
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# The zic command and its arguments.
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zic= ./zic
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@ -419,22 +463,23 @@ ZFLAGS=
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ZIC_INSTALL= $(ZIC) -d '$(DESTDIR)$(TZDIR)' $(LEAPSECONDS)
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# The name of a Posix-compliant 'awk' on your system.
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# The name of a POSIX-compliant 'awk' on your system.
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# mawk 1.3.3 and Solaris 10 /usr/bin/awk do not work.
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# Also, it is better (though not essential) if 'awk' supports UTF-8,
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# and unfortunately mawk and busybox awk do not support UTF-8.
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# Try AWK=gawk or AWK=nawk if your awk has the abovementioned problems.
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AWK= awk
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# The full path name of a Posix-compliant shell, preferably one that supports
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# The full path name of a POSIX-compliant shell, preferably one that supports
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# the Korn shell's 'select' statement as an extension.
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# These days, Bash is the most popular.
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# It should be OK to set this to /bin/sh, on platforms where /bin/sh
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# lacks 'select' or doesn't completely conform to Posix, but /bin/bash
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# lacks 'select' or doesn't completely conform to POSIX, but /bin/bash
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# is typically nicer if it works.
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KSHELL= /bin/bash
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# Name of curl <https://curl.haxx.se/>, used for HTML validation.
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# Name of curl <https://curl.haxx.se/>, used for HTML validation
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# and to fetch leap-seconds.list from upstream.
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CURL= curl
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# Name of GNU Privacy Guard <https://gnupg.org/>, used to sign distributions.
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@ -504,18 +549,17 @@ GZIPFLAGS= -9n
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DIFF_TZS= diff -u$$(! diff -u -F'^TZ=' - - <>/dev/null >&0 2>&1 \
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|| echo ' -F^TZ=')
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###############################################################################
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#MAKE= make
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cc= cc
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CC= $(cc) -DTZDIR='"$(TZDIR)"'
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AR= ar
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# ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib.
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RANLIB= :
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# POSIX prohibits defining or using SHELL. However, csh users on systems
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# that use the user shell for Makefile commands may need to define SHELL.
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#SHELL= /bin/sh
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# End of macros that one plausibly might want to tailor.
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###############################################################################
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TZCOBJS= zic.o
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TZDOBJS= zdump.o localtime.o asctime.o strftime.o
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DATEOBJS= date.o localtime.o strftime.o asctime.o
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@ -544,7 +588,7 @@ YDATA= $(PRIMARY_YDATA) etcetera
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NDATA= factory
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TDATA_TO_CHECK= $(YDATA) $(NDATA) backward
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TDATA= $(YDATA) $(NDATA) $(BACKWARD)
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ZONETABLES= zone1970.tab zone.tab
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ZONETABLES= zone.tab zone1970.tab zonenow.tab
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TABDATA= iso3166.tab $(TZDATA_TEXT) $(ZONETABLES)
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LEAP_DEPS= leapseconds.awk leap-seconds.list
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TZDATA_ZI_DEPS= ziguard.awk zishrink.awk version $(TDATA) \
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@ -552,7 +596,7 @@ TZDATA_ZI_DEPS= ziguard.awk zishrink.awk version $(TDATA) \
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DSTDATA_ZI_DEPS= ziguard.awk $(TDATA) $(PACKRATDATA) $(PACKRATLIST)
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DATA= $(TDATA_TO_CHECK) backzone iso3166.tab leap-seconds.list \
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leapseconds $(ZONETABLES)
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AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk \
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AWK_SCRIPTS= checklinks.awk checknow.awk checktab.awk leapseconds.awk \
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ziguard.awk zishrink.awk
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MISC= $(AWK_SCRIPTS)
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TZS_YEAR= 2050
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@ -573,7 +617,7 @@ VERSION_DEPS= \
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calendars CONTRIBUTING LICENSE Makefile NEWS README SECURITY \
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africa antarctica asctime.c asia australasia \
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backward backzone \
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checklinks.awk checktab.awk \
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checklinks.awk checknow.awk checktab.awk \
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date.1 date.c difftime.c \
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etcetera europe factory iso3166.tab \
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leap-seconds.list leapseconds.awk localtime.c \
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@ -583,12 +627,7 @@ VERSION_DEPS= \
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tzfile.5 tzfile.h tzselect.8 tzselect.ksh \
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workman.sh zdump.8 zdump.c zic.8 zic.c \
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ziguard.awk zishrink.awk \
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zone.tab zone1970.tab
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# And for the benefit of csh users on systems that assume the user
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# shell should be used to handle commands in Makefiles. . .
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SHELL= /bin/sh
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zone.tab zone1970.tab zonenow.tab
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all: tzselect zic zdump libtz.a $(TABDATA) \
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vanguard.zi main.zi rearguard.zi
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@ -658,6 +697,16 @@ tzdata.zi: $(DATAFORM).zi version zishrink.awk
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$(DATAFORM).zi >$@.out
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mv $@.out $@
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tzdir.h:
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printf '%s\n' >$@.out \
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'#ifndef TZDEFAULT' \
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'# define TZDEFAULT "$(TZDEFAULT)" /* default zone */' \
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'#endif' \
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'#ifndef TZDIR' \
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'# define TZDIR "$(TZDIR)" /* TZif directory */' \
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'#endif'
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mv $@.out $@
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version.h: version
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VERSION=`cat version` && printf '%s\n' \
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'static char const PKGVERSION[]="($(PACKAGE)) ";' \
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@ -677,6 +726,28 @@ leapseconds: $(LEAP_DEPS)
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-f leapseconds.awk leap-seconds.list >$@.out
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mv $@.out $@
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# Awk script to extract a Git-style author from leap-seconds.list comments.
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EXTRACT_AUTHOR = \
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author_line { sub(/^.[[:space:]]*/, ""); \
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sub(/:[[:space:]]*/, " <"); \
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printf "%s>\n", $$0; \
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success = 1; \
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exit \
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} \
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/Questions or comments to:/ { author_line = 1 } \
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END { exit !success }
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# Fetch leap-seconds.list from upstream.
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fetch-leap-seconds.list:
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$(CURL) -OR $(leaplist_URI)
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# Fetch leap-seconds.list from upstream and commit it to the local repository.
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commit-leap-seconds.list: fetch-leap-seconds.list
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author=$$($(AWK) '$(EXTRACT_AUTHOR)' leap-seconds.list) && \
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date=$$(TZ=$(leaplist_TZ) stat -c%y leap-seconds.list) && \
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git commit --author="$$author" --date="$$date" -m'make $@' \
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leap-seconds.list
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# Arguments to pass to submakes of install_data.
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# They can be overridden by later submake arguments.
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INSTALLARGS = \
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@ -764,7 +835,7 @@ force_tzs: $(TZS_NEW)
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libtz.a: $(LIBOBJS)
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rm -f $@
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$(AR) -rc $@ $(LIBOBJS)
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$(AR) $(ARFLAGS) $@ $(LIBOBJS)
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$(RANLIB) $@
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date: $(DATEOBJS)
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@ -772,26 +843,32 @@ date: $(DATEOBJS)
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tzselect: tzselect.ksh version
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VERSION=`cat version` && sed \
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-e 's|#!/bin/bash|#!$(KSHELL)|g' \
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-e 's|AWK=[^}]*|AWK='\''$(AWK)'\''|g' \
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-e 's|\(PKGVERSION\)=.*|\1='\''($(PACKAGE)) '\''|' \
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-e 's|\(REPORT_BUGS_TO\)=.*|\1=$(BUGEMAIL)|' \
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-e 's|TZDIR=[^}]*|TZDIR=$(TZDIR)|' \
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-e 's|\(TZVERSION\)=.*|\1='"$$VERSION"'|' \
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<$@.ksh >$@.out
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-e "s'#!/bin/bash'#!"'$(KSHELL)'\' \
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-e s\''\(AWK\)=[^}]*'\''\1=\'\''$(AWK)\'\'\' \
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-e s\''\(PKGVERSION\)=.*'\''\1=\'\''($(PACKAGE)) \'\'\' \
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-e s\''\(REPORT_BUGS_TO\)=.*'\''\1=\'\''$(BUGEMAIL)\'\'\' \
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-e s\''\(TZDIR\)=[^}]*'\''\1=\'\''$(TZDIR)\'\'\' \
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-e s\''\(TZVERSION\)=.*'\''\1=\'"'$$VERSION\\''" \
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<$@.ksh >$@.out
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chmod +x $@.out
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mv $@.out $@
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|
||||
check: check_back check_mild
|
||||
check_mild: check_character_set check_white_space check_links \
|
||||
check_name_lengths check_slashed_abbrs check_sorted \
|
||||
check_name_lengths check_now \
|
||||
check_slashed_abbrs check_sorted \
|
||||
check_tables check_web check_ziguard check_zishrink check_tzs
|
||||
|
||||
# True if UTF8_LOCALE does not work;
|
||||
# otherwise, false but with LC_ALL set to $(UTF8_LOCALE).
|
||||
UTF8_LOCALE_MISSING = \
|
||||
{ test ! '$(UTF8_LOCALE)' \
|
||||
|| ! printf 'A\304\200B\n' \
|
||||
| LC_ALL='$(UTF8_LOCALE)' grep -q '^A.B$$' >/dev/null 2>&1 \
|
||||
|| { LC_ALL='$(UTF8_LOCALE)'; export LC_ALL; false; }; }
|
||||
|
||||
check_character_set: $(ENCHILADA)
|
||||
test ! '$(UTF8_LOCALE)' || \
|
||||
! printf 'A\304\200B\n' | \
|
||||
LC_ALL='$(UTF8_LOCALE)' grep -q '^A.B$$' >/dev/null 2>&1 || { \
|
||||
LC_ALL='$(UTF8_LOCALE)' && export LC_ALL && \
|
||||
$(UTF8_LOCALE_MISSING) || { \
|
||||
sharp='#' && \
|
||||
! grep -Env $(SAFE_LINE) $(MANS) date.1 $(MANTXTS) \
|
||||
$(MISC) $(SOURCES) $(WEB_PAGES) \
|
||||
|
|
@ -806,12 +883,12 @@ check_character_set: $(ENCHILADA)
|
|||
touch $@
|
||||
|
||||
check_white_space: $(ENCHILADA)
|
||||
$(UTF8_LOCALE_MISSING) || { \
|
||||
patfmt=' \t|[\f\r\v]' && pat=`printf "$$patfmt\\n"` && \
|
||||
! grep -En "$$pat" \
|
||||
$$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list)
|
||||
! grep -n '[$s]$$' \
|
||||
$$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list)
|
||||
touch $@
|
||||
! grep -En "$$pat|[$s]\$$" \
|
||||
$$(ls $(ENCHILADA) | grep -Fvx leap-seconds.list); \
|
||||
}
|
||||
touch $@
|
||||
|
||||
PRECEDES_FILE_NAME = ^(Zone|Link[$s]+[^$s]+)[$s]+
|
||||
FILE_NAME_COMPONENT_TOO_LONG = $(PRECEDES_FILE_NAME)[^$s]*[^/$s]{15}
|
||||
|
|
@ -852,7 +929,29 @@ check_links: checklinks.awk tzdata.zi
|
|||
-f checklinks.awk tzdata.zi
|
||||
touch $@
|
||||
|
||||
check_tables: checktab.awk $(YDATA) backward $(ZONETABLES)
|
||||
# Check timestamps from now through 28 years from now, to make sure
|
||||
# that zonenow.tab contains all sequences of planned timestamps,
|
||||
# without any duplicate sequences. In theory this might require
|
||||
# 2800 years but that would take a long time to check.
|
||||
CHECK_NOW_TIMESTAMP = `./date +%s`
|
||||
CHECK_NOW_FUTURE_YEARS = 28
|
||||
CHECK_NOW_FUTURE_SECS = $(CHECK_NOW_FUTURE_YEARS) '*' 366 '*' 24 '*' 60 '*' 60
|
||||
check_now: checknow.awk date tzdata.zi zdump zic zone1970.tab zonenow.tab
|
||||
rm -fr $@.dir
|
||||
mkdir $@.dir
|
||||
./zic -d $@.dir tzdata.zi
|
||||
now=$(CHECK_NOW_TIMESTAMP) && \
|
||||
future=`expr $(CHECK_NOW_FUTURE_SECS) + $$now` && \
|
||||
./zdump -i -t $$now,$$future \
|
||||
$$(find $$PWD/$@.dir/????*/ -type f) \
|
||||
>$@.dir/zdump.tab
|
||||
$(AWK) \
|
||||
-v zdump_table=$@.dir/zdump.tab \
|
||||
-f checknow.awk zonenow.tab
|
||||
rm -fr $@.dir
|
||||
touch $@
|
||||
|
||||
check_tables: checktab.awk $(YDATA) backward zone.tab zone1970.tab
|
||||
for tab in $(ZONETABLES); do \
|
||||
test "$$tab" = zone.tab && links='$(BACKWARD)' || links=''; \
|
||||
$(AWK) -f checktab.awk -v zone_table=$$tab $(YDATA) $$links \
|
||||
|
|
@ -912,10 +1011,10 @@ check_zishrink_posix check_zishrink_right: \
|
|||
touch $@
|
||||
|
||||
clean_misc:
|
||||
rm -fr check_*.dir
|
||||
rm -fr check_*.dir typecheck_*.dir
|
||||
rm -f *.o *.out $(TIME_T_ALTERNATIVES) \
|
||||
check_* core typecheck_* \
|
||||
date tzselect version.h zdump zic libtz.a
|
||||
date tzdir.h tzselect version.h zdump zic libtz.a
|
||||
clean: clean_misc
|
||||
rm -fr *.dir tzdb-*/
|
||||
rm -f *.zi $(TZS_NEW)
|
||||
|
|
@ -953,12 +1052,18 @@ $(MANTXTS): workman.sh
|
|||
# plus N if GNU ls and touch are available.
|
||||
SET_TIMESTAMP_N = sh -c '\
|
||||
n=$$0 dest=$$1; shift; \
|
||||
touch -cmr `ls -t "$$@" | sed 1q` "$$dest" && \
|
||||
<"$$dest" && \
|
||||
if test $$n != 0 && \
|
||||
lsout=`ls -n --time-style="+%s" "$$dest" 2>/dev/null`; then \
|
||||
lsout=`ls -nt --time-style="+%s" "$$@" 2>/dev/null`; then \
|
||||
set x $$lsout && \
|
||||
touch -cmd @`expr $$7 + $$n` "$$dest"; \
|
||||
else :; fi'
|
||||
timestamp=`expr $$7 + $$n` && \
|
||||
echo "+ touch -md @$$timestamp $$dest" && \
|
||||
touch -md @$$timestamp "$$dest"; \
|
||||
else \
|
||||
newest=`ls -t "$$@" | sed 1q` && \
|
||||
echo "+ touch -mr $$newest $$dest" && \
|
||||
touch -mr "$$newest" "$$dest"; \
|
||||
fi'
|
||||
# If DEST depends on A B C ... in this Makefile, callers should use
|
||||
# $(SET_TIMESTAMP_DEP) DEST A B C ..., for the benefit of any
|
||||
# downstream 'make' that considers equal timestamps to be out of date.
|
||||
|
|
@ -983,8 +1088,12 @@ set-timestamps.out: $(EIGHT_YARDS)
|
|||
rm -f test.out && \
|
||||
for file in $$files; do \
|
||||
if git diff --quiet $$file; then \
|
||||
time=`git log -1 --format='tformat:%ct' $$file` && \
|
||||
touch -cmd @$$time $$file; \
|
||||
time=`TZ=UTC0 git log -1 \
|
||||
--format='tformat:%cd' \
|
||||
--date='format:%Y-%m-%dT%H:%M:%SZ' \
|
||||
$$file` && \
|
||||
echo "+ touch -md $$time $$file" && \
|
||||
touch -md $$time $$file; \
|
||||
else \
|
||||
echo >&2 "$$file: warning: does not match repository"; \
|
||||
fi || exit; \
|
||||
|
|
@ -1009,7 +1118,8 @@ check_public: $(VERSION_DEPS)
|
|||
rm -fr public.dir
|
||||
mkdir public.dir
|
||||
ln $(VERSION_DEPS) public.dir
|
||||
cd public.dir && $(MAKE) CFLAGS='$(GCC_DEBUG_FLAGS)' ALL
|
||||
cd public.dir \
|
||||
&& $(MAKE) CFLAGS='$(GCC_DEBUG_FLAGS)' TZDIR='$(TZDIR)' ALL
|
||||
for i in $(TDATA_TO_CHECK) public.dir/tzdata.zi \
|
||||
public.dir/vanguard.zi public.dir/main.zi \
|
||||
public.dir/rearguard.zi; \
|
||||
|
|
@ -1140,7 +1250,7 @@ tzdata$(VERSION)-rearguard.tar.gz: rearguard.zi set-timestamps.out
|
|||
sed '1s/$$/-rearguard/' <version >$@.dir/version
|
||||
: The dummy pacificnew pacifies TZUpdater 2.3.1 and earlier.
|
||||
$(CREATE_EMPTY) $@.dir/pacificnew
|
||||
touch -cmr version $@.dir/version
|
||||
touch -mr version $@.dir/version
|
||||
LC_ALL=C && export LC_ALL && \
|
||||
(cd $@.dir && \
|
||||
tar $(TARFLAGS) -cf - \
|
||||
|
|
@ -1164,7 +1274,7 @@ tzdata$(VERSION)-tailored.tar.gz: set-timestamps.out
|
|||
`test $(DATAFORM) = vanguard || echo pacificnew`
|
||||
(grep '^#' tzdata.zi && echo && cat $(DATAFORM).zi) \
|
||||
>$@.dir/etcetera
|
||||
touch -cmr tzdata.zi $@.dir/etcetera
|
||||
touch -mr tzdata.zi $@.dir/etcetera
|
||||
sed -n \
|
||||
-e '/^# *version *\(.*\)/h' \
|
||||
-e '/^# *ddeps */H' \
|
||||
|
|
@ -1175,7 +1285,7 @@ tzdata$(VERSION)-tailored.tar.gz: set-timestamps.out
|
|||
-e 's/ /-/g' \
|
||||
-e 'p' \
|
||||
<tzdata.zi >$@.dir/version
|
||||
touch -cmr version $@.dir/version
|
||||
touch -mr version $@.dir/version
|
||||
links= && \
|
||||
for file in $(TZDATA_DIST); do \
|
||||
test -f $@.dir/$$file || links="$$links $$file"; \
|
||||
|
|
@ -1227,15 +1337,16 @@ zonenames: tzdata.zi
|
|||
asctime.o: private.h tzfile.h
|
||||
date.o: private.h
|
||||
difftime.o: private.h
|
||||
localtime.o: private.h tzfile.h
|
||||
localtime.o: private.h tzfile.h tzdir.h
|
||||
strftime.o: private.h tzfile.h
|
||||
zdump.o: version.h
|
||||
zic.o: private.h tzfile.h version.h
|
||||
zic.o: private.h tzfile.h tzdir.h version.h
|
||||
|
||||
.PHONY: ALL INSTALL all
|
||||
.PHONY: check check_mild check_time_t_alternatives
|
||||
.PHONY: check_web check_zishrink
|
||||
.PHONY: clean clean_misc dummy.zd force_tzs
|
||||
.PHONY: clean clean_misc commit-leap-seconds.list dummy.zd
|
||||
.PHONY: fetch-leap-seconds.list force_tzs
|
||||
.PHONY: install install_data maintainer-clean names
|
||||
.PHONY: posix_only posix_right public
|
||||
.PHONY: rearguard_signatures rearguard_signatures_version
|
||||
|
|
|
|||
|
|
@ -1,5 +1,177 @@
|
|||
News for the tz database
|
||||
|
||||
Release 2024a - 2024-02-01 09:28:56 -0800
|
||||
|
||||
Briefly:
|
||||
Kazakhstan unifies on UTC+5 beginning 2024-03-01.
|
||||
Palestine springs forward a week later after Ramadan.
|
||||
zic no longer pretends to support indefinite-past DST.
|
||||
localtime no longer mishandles Ciudad Juárez in 2422.
|
||||
|
||||
Changes to future timestamps
|
||||
|
||||
Kazakhstan unifies on UTC+5. This affects Asia/Almaty and
|
||||
Asia/Qostanay which together represent the eastern portion of the
|
||||
country that will transition from UTC+6 on 2024-03-01 at 00:00 to
|
||||
join the western portion. (Thanks to Zhanbolat Raimbekov.)
|
||||
|
||||
Palestine springs forward a week later than previously predicted
|
||||
in 2024 and 2025. (Thanks to Heba Hamad.) Change spring-forward
|
||||
predictions to the second Saturday after Ramadan, not the first;
|
||||
this also affects other predictions starting in 2039.
|
||||
|
||||
Changes to past timestamps
|
||||
|
||||
Asia/Ho_Chi_Minh's 1955-07-01 transition occurred at 01:00
|
||||
not 00:00. (Thanks to Đoàn Trần Công Danh.)
|
||||
|
||||
From 1947 through 1949, Toronto's transitions occurred at 02:00
|
||||
not 00:00. (Thanks to Chris Walton.)
|
||||
|
||||
In 1911 Miquelon adopted standard time on June 15, not May 15.
|
||||
|
||||
Changes to code
|
||||
|
||||
The FROM and TO columns of Rule lines can no longer be "minimum"
|
||||
or an abbreviation of "minimum", because TZif files do not support
|
||||
DST rules that extend into the indefinite past - although these
|
||||
rules were supported when TZif files had only 32-bit data, this
|
||||
stopped working when 64-bit TZif files were introduced in 1995.
|
||||
This should not be a problem for realistic data, since DST was
|
||||
first used in the 20th century. As a transition aid, FROM columns
|
||||
like "minimum" are now diagnosed and then treated as if they were
|
||||
the year 1900; this should suffice for TZif files on old systems
|
||||
with only 32-bit time_t, and it is more compatible with bugs in
|
||||
2023c-and-earlier localtime.c. (Problem reported by Yoshito
|
||||
Umaoka.)
|
||||
|
||||
localtime and related functions no longer mishandle some
|
||||
timestamps that occur about 400 years after a switch to a time
|
||||
zone with a DST schedule. In 2023d data this problem was visible
|
||||
for some timestamps in November 2422, November 2822, etc. in
|
||||
America/Ciudad_Juarez. (Problem reported by Gilmore Davidson.)
|
||||
|
||||
strftime %s now uses tm_gmtoff if available. (Problem and draft
|
||||
patch reported by Dag-Erling Smørgrav.)
|
||||
|
||||
Changes to build procedure
|
||||
|
||||
The leap-seconds.list file is now copied from the IERS instead of
|
||||
from its downstream counterpart at NIST, as the IERS version is
|
||||
now in the public domain too and tends to be more up-to-date.
|
||||
(Thanks to Martin Burnicki for liaisoning with the IERS.)
|
||||
|
||||
Changes to documentation
|
||||
|
||||
The strftime man page documents which struct tm members affect
|
||||
which conversion specs, and that tzset is called. (Problems
|
||||
reported by Robert Elz and Steve Summit.)
|
||||
|
||||
|
||||
Release 2023d - 2023-12-21 20:02:24 -0800
|
||||
|
||||
Briefly:
|
||||
Ittoqqortoormiit, Greenland changes time zones on 2024-03-31.
|
||||
Vostok, Antarctica changed time zones on 2023-12-18.
|
||||
Casey, Antarctica changed time zones five times since 2020.
|
||||
Code and data fixes for Palestine timestamps starting in 2072.
|
||||
A new data file zonenow.tab for timestamps starting now.
|
||||
|
||||
Changes to future timestamps
|
||||
|
||||
Ittoqqortoormiit, Greenland (America/Scoresbysund) joins most of
|
||||
the rest of Greenland's timekeeping practice on 2024-03-31, by
|
||||
changing its time zone from -01/+00 to -02/-01 at the same moment
|
||||
as the spring-forward transition. Its clocks will therefore not
|
||||
spring forward as previously scheduled. The time zone change
|
||||
reverts to its common practice before 1981.
|
||||
|
||||
Fix predictions for DST transitions in Palestine in 2072-2075,
|
||||
correcting a typo introduced in 2023a.
|
||||
|
||||
Changes to past and future timestamps
|
||||
|
||||
Vostok, Antarctica changed to +05 on 2023-12-18. It had been at
|
||||
+07 (not +06) for years. (Thanks to Zakhary V. Akulov.)
|
||||
|
||||
Change data for Casey, Antarctica to agree with timeanddate.com,
|
||||
by adding five time zone changes since 2020. Casey is now at +08
|
||||
instead of +11.
|
||||
|
||||
Changes to past tm_isdst flags
|
||||
|
||||
Much of Greenland, represented by America/Nuuk, changed its
|
||||
standard time from -03 to -02 on 2023-03-25, not on 2023-10-28.
|
||||
This does not affect UTC offsets, only the tm_isdst flag.
|
||||
(Thanks to Thomas M. Steenholdt.)
|
||||
|
||||
New data file
|
||||
|
||||
A new data file zonenow.tab helps configure applications that use
|
||||
timestamps dated from now on. This simplifies configuration,
|
||||
since users choose from a smaller Zone set. The file's format is
|
||||
experimental and subject to change.
|
||||
|
||||
Changes to code
|
||||
|
||||
localtime.c no longer mishandles TZif files that contain a single
|
||||
transition into a DST regime. Previously, it incorrectly assumed
|
||||
DST was in effect before the transition too. (Thanks to Alois
|
||||
Treindl for debugging help.)
|
||||
|
||||
localtime.c's timeoff no longer collides with OpenBSD 7.4.
|
||||
|
||||
The C code now uses _Generic only if __STDC_VERSION__ says the
|
||||
compiler is C11 or later.
|
||||
|
||||
tzselect now optionally reads zonenow.tab, to simplify when
|
||||
configuring only for timestamps dated from now on.
|
||||
|
||||
tzselect no longer creates temporary files.
|
||||
|
||||
tzselect no longer mishandles the following:
|
||||
|
||||
Spaces and most other special characters in BUGEMAIL, PACKAGE,
|
||||
TZDIR, and VERSION.
|
||||
|
||||
TZ strings when using mawk 1.4.3, which mishandles regular
|
||||
expressions of the form /X{2,}/.
|
||||
|
||||
ISO 6709 coordinates when using an awk that lacks the GNU
|
||||
extension of newlines in -v option-arguments.
|
||||
|
||||
Non UTF-8 locales when using an iconv command that lacks the GNU
|
||||
//TRANSLIT extension.
|
||||
|
||||
zic no longer mishandles data for Palestine after the year 2075.
|
||||
Previously, it incorrectly omitted post-2075 transitions that are
|
||||
predicted for just before and just after Ramadan. (Thanks to Ken
|
||||
Murchison for debugging help.)
|
||||
|
||||
zic now works again on Linux 2.6.16 and 2.6.17 (2006).
|
||||
(Problem reported by Rune Torgersen.)
|
||||
|
||||
Changes to build procedure
|
||||
|
||||
The Makefile is now more compatible with POSIX:
|
||||
* It no longer defines AR, CC, CFLAGS, LDFLAGS, and SHELL.
|
||||
* It no longer uses its own 'cc' in place of CC.
|
||||
* It now uses ARFLAGS, with default specified by POSIX.
|
||||
* It does not use LFLAGS incompatibly with POSIX.
|
||||
* It uses the special .POSIX target.
|
||||
* It quotes special characters more carefully.
|
||||
* It no longer mishandles builds in an ISO 8859 locale.
|
||||
Due to the CC changes, TZDIR is now #defined in a file tzfile.h
|
||||
built by 'make', not in a $(CC) -D option. Also, TZDEFAULT is
|
||||
now treated like TZDIR as they have similar roles.
|
||||
|
||||
Changes to commentary
|
||||
|
||||
Limitations and hazards of the optional support for obsolescent
|
||||
C89 platforms are documented better, along with a tentative
|
||||
schedule for removing this support.
|
||||
|
||||
|
||||
Release 2023c - 2023-03-28 12:42:14 -0700
|
||||
|
||||
Changes to past and future timestamps
|
||||
|
|
@ -76,11 +248,14 @@ Release 2023a - 2023-03-22 12:39:33 -0700
|
|||
platform dependent and abbreviations were silently truncated to
|
||||
16 bytes even when the limit was greater than 16.
|
||||
|
||||
The code by default is now designed for C99 or later. To build in
|
||||
a C89 environment, compile with -DPORT_TO_C89. To support C89
|
||||
callers of the tzcode library, compile with -DSUPPORT_C89. The
|
||||
two new macros are transitional aids planned to be removed in a
|
||||
future version, when C99 or later will be required.
|
||||
The code by default is now designed for C99 or later. To build on
|
||||
a mostly-C89 platform, compile with -DPORT_TO_C89; this should
|
||||
work on C89 platforms that also support C99 'long long' and
|
||||
perhaps a few other extensions to C89. To support C89 callers of
|
||||
tzcode's library, compile with -DSUPPORT_C89; however, this could
|
||||
trigger latent bugs in C99-or-later callers. The two new macros
|
||||
are transitional aids planned to be removed in a future version
|
||||
(say, in 2029), when C99 or later will be required.
|
||||
|
||||
The code now builds again on pre-C99 platforms, if you compile
|
||||
with -DPORT_TO_C89. This fixes a bug introduced in 2022f.
|
||||
|
|
@ -723,6 +898,8 @@ Release 2021b - 2021-09-24 16:23:00 -0700
|
|||
them, set the EXPIRES_LINE Makefile variable. If a TZif file uses
|
||||
this new feature it is marked with a new TZif version number 4,
|
||||
a format intended to be documented in a successor to RFC 8536.
|
||||
The old-format "#expires" comments are now treated solely as
|
||||
comments and have no effect on the TZif files.
|
||||
|
||||
zic -L LEAPFILE -r @LO no longer generates an invalid TZif file
|
||||
that omits leap second information for the range LO..B when LO
|
||||
|
|
@ -4302,7 +4479,7 @@ Release 2012j - 2012-11-12 18:34:49 -0800
|
|||
now uses tz@iana.org rather than the old elsie address.
|
||||
|
||||
zic -v now complains about abbreviations that are less than 3
|
||||
or more than 6 characters, as per Posix. Formerly, it checked
|
||||
or more than 6 characters, as per POSIX. Formerly, it checked
|
||||
for abbreviations that were more than 3.
|
||||
|
||||
'make public' no longer puts its temporary directory under /tmp,
|
||||
|
|
@ -4467,8 +4644,8 @@ Release data2011m - 2011-10-24 21:42:16 +0700
|
|||
In particular, the typos in comments in the data (2011-11-17 should have
|
||||
been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that
|
||||
Tim Parenti noted) have been fixed, and the change for Ukraine has been
|
||||
made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to
|
||||
Tim Parenti, and also Denys Gavrysh)
|
||||
made in all 4 Ukrainian zones, rather than just Europe/Kiev
|
||||
(again, thanks to Tim Parenti, and also Denys Gavrysh).
|
||||
|
||||
In addition, I added Europe/Tiraspol to zone.tab.
|
||||
|
||||
|
|
|
|||
|
|
@ -11,14 +11,17 @@ changes made by political bodies to time zone boundaries, UTC offsets,
|
|||
and daylight-saving rules.
|
||||
|
||||
See <https://www.iana.org/time-zones/repository/tz-link.html> or the
|
||||
file tz-link.html for how to acquire the code and data. Once acquired,
|
||||
read the comments in the file 'Makefile' and make any changes needed
|
||||
to make things right for your system, especially if you are using some
|
||||
platform other than GNU/Linux. Then run the following commands,
|
||||
substituting your desired installation directory for "$HOME/tzdir":
|
||||
file tz-link.html for how to acquire the code and data.
|
||||
|
||||
make TOPDIR=$HOME/tzdir install
|
||||
$HOME/tzdir/usr/bin/zdump -v America/Los_Angeles
|
||||
Once acquired, read the leading comments in the file "Makefile"
|
||||
and make any changes needed to make things right for your system,
|
||||
especially when using a platform other than current GNU/Linux.
|
||||
|
||||
Then run the following commands, substituting your desired
|
||||
installation directory for "$HOME/tzdir":
|
||||
|
||||
make TOPDIR="$HOME/tzdir" install
|
||||
"$HOME/tzdir/usr/bin/zdump" -v America/Los_Angeles
|
||||
|
||||
See the file tz-how-to.html for examples of how to read the data files.
|
||||
|
||||
|
|
|
|||
|
|
@ -154,15 +154,11 @@ hexadecimal (leading 0x), preceded by an optional sign.
|
|||
.br
|
||||
/usr/lib/locale/\f2L\fP/LC_TIME description of time locale \f2L\fP
|
||||
.br
|
||||
/usr/share/zoneinfo timezone information directory
|
||||
/usr/share/zoneinfo timezone directory
|
||||
.br
|
||||
/usr/share/zoneinfo/posixrules default DST rules (obsolete,
|
||||
and can cause bugs if present)
|
||||
/usr/share/zoneinfo/posixrules default DST rules (obsolete)
|
||||
.br
|
||||
/usr/share/zoneinfo/GMT for UTC leap seconds
|
||||
.sp
|
||||
If
|
||||
.B /usr/share/zoneinfo/GMT
|
||||
is absent,
|
||||
UTC leap seconds are loaded from
|
||||
.BR /usr/share/zoneinfo/posixrules .
|
||||
.PP
|
||||
If /usr/share/zoneinfo/GMT is absent,
|
||||
UTC leap seconds are loaded from /usr/share/zoneinfo/GMT0 if present.
|
||||
|
|
|
|||
|
|
@ -7,7 +7,7 @@
|
|||
|
||||
/*
|
||||
** Leap second handling from Bradley White.
|
||||
** POSIX-style TZ environment variable handling from Guy Harris.
|
||||
** POSIX.1-1988 style TZ environment variable handling from Guy Harris.
|
||||
*/
|
||||
|
||||
/*LINTLIBRARY*/
|
||||
|
|
@ -27,6 +27,7 @@
|
|||
#include "private.h"
|
||||
#include "un-namespace.h"
|
||||
|
||||
#include "tzdir.h"
|
||||
#include "tzfile.h"
|
||||
|
||||
#include "libc_private.h"
|
||||
|
|
@ -124,12 +125,17 @@ static char const UNSPEC[] = "-00";
|
|||
for ttunspecified to work without crashing. */
|
||||
enum { CHARS_EXTRA = max(sizeof UNSPEC, 2) - 1 };
|
||||
|
||||
/* Limit to time zone abbreviation length in POSIX-style TZ strings.
|
||||
/* Limit to time zone abbreviation length in POSIX.1-2017-style TZ strings.
|
||||
This is distinct from TZ_MAX_CHARS, which limits TZif file contents. */
|
||||
#ifndef TZNAME_MAXIMUM
|
||||
# define TZNAME_MAXIMUM 255
|
||||
#endif
|
||||
|
||||
/* A representation of the contents of a TZif file. Ideally this
|
||||
would have no size limits; the following sizes should suffice for
|
||||
practical use. This struct should not be too large, as instances
|
||||
are put on the stack and stacks are relatively small on some platforms.
|
||||
See tzfile.h for more about the sizes. */
|
||||
struct state {
|
||||
int leapcnt;
|
||||
int timecnt;
|
||||
|
|
@ -172,8 +178,7 @@ static int_fast32_t leapcorr(struct state const *, time_t);
|
|||
static bool normalize_overflow32(int_fast32_t *, int *, int);
|
||||
static struct tm *timesub(time_t const *, int_fast32_t, struct state const *,
|
||||
struct tm *);
|
||||
static bool typesequiv(struct state const *, int, int);
|
||||
static bool tzparse(char const *, struct state *, struct state *);
|
||||
static bool tzparse(char const *, struct state *, struct state const *);
|
||||
|
||||
#ifdef ALL_STATE
|
||||
static struct state * lclptr;
|
||||
|
|
@ -438,7 +443,8 @@ union input_buffer {
|
|||
/* The first part of the buffer, interpreted as a header. */
|
||||
struct tzhead tzhead;
|
||||
|
||||
/* The entire buffer. */
|
||||
/* The entire buffer. Ideally this would have no size limits;
|
||||
the following should suffice for practical use. */
|
||||
char buf[2 * sizeof(struct tzhead) + 2 * sizeof(struct state)
|
||||
+ 4 * TZ_MAX_TIMES];
|
||||
};
|
||||
|
|
@ -457,7 +463,12 @@ union local_storage {
|
|||
struct state st;
|
||||
} u;
|
||||
|
||||
/* The file name to be opened. */
|
||||
/* The name of the file to be opened. Ideally this would have no
|
||||
size limits, to support arbitrarily long Zone names.
|
||||
Limiting Zone names to 1024 bytes should suffice for practical use.
|
||||
However, there is no need for this to be smaller than struct
|
||||
file_analysis as that struct is allocated anyway, as the other
|
||||
union member. */
|
||||
char fullname[max(sizeof(struct file_analysis), sizeof tzdirslash + 1024)];
|
||||
};
|
||||
|
||||
|
|
@ -737,14 +748,18 @@ tzloadbody(char const *name, struct state *sp, bool doextend,
|
|||
== sp->types[sp->timecnt - 2]))
|
||||
sp->timecnt--;
|
||||
|
||||
for (i = 0;
|
||||
i < ts->timecnt && sp->timecnt < TZ_MAX_TIMES;
|
||||
i++) {
|
||||
sp->goahead = ts->goahead;
|
||||
|
||||
for (i = 0; i < ts->timecnt; i++) {
|
||||
time_t t = ts->ats[i];
|
||||
if (increment_overflow_time(&t, leapcorr(sp, t))
|
||||
|| (0 < sp->timecnt
|
||||
&& t <= sp->ats[sp->timecnt - 1]))
|
||||
continue;
|
||||
if (TZ_MAX_TIMES <= sp->timecnt) {
|
||||
sp->goahead = false;
|
||||
break;
|
||||
}
|
||||
sp->ats[sp->timecnt] = t;
|
||||
sp->types[sp->timecnt] = (sp->typecnt
|
||||
+ ts->types[i]);
|
||||
|
|
@ -757,28 +772,6 @@ tzloadbody(char const *name, struct state *sp, bool doextend,
|
|||
}
|
||||
if (sp->typecnt == 0)
|
||||
return EINVAL;
|
||||
if (sp->timecnt > 1) {
|
||||
if (sp->ats[0] <= TIME_T_MAX - SECSPERREPEAT) {
|
||||
time_t repeatat = sp->ats[0] + SECSPERREPEAT;
|
||||
int repeattype = sp->types[0];
|
||||
for (i = 1; i < sp->timecnt; ++i)
|
||||
if (sp->ats[i] == repeatat
|
||||
&& typesequiv(sp, sp->types[i], repeattype)) {
|
||||
sp->goback = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (TIME_T_MIN + SECSPERREPEAT <= sp->ats[sp->timecnt - 1]) {
|
||||
time_t repeatat = sp->ats[sp->timecnt - 1] - SECSPERREPEAT;
|
||||
int repeattype = sp->types[sp->timecnt - 1];
|
||||
for (i = sp->timecnt - 2; i >= 0; --i)
|
||||
if (sp->ats[i] == repeatat
|
||||
&& typesequiv(sp, sp->types[i], repeattype)) {
|
||||
sp->goahead = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Infer sp->defaulttype from the data. Although this default
|
||||
type is always zero for data from recent tzdb releases,
|
||||
|
|
@ -855,31 +848,6 @@ tzload(char const *name, struct state *sp, bool doextend)
|
|||
#endif
|
||||
}
|
||||
|
||||
static bool
|
||||
typesequiv(const struct state *sp, int a, int b)
|
||||
{
|
||||
register bool result;
|
||||
|
||||
if (sp == NULL ||
|
||||
a < 0 || a >= sp->typecnt ||
|
||||
b < 0 || b >= sp->typecnt)
|
||||
result = false;
|
||||
else {
|
||||
/* Compare the relevant members of *AP and *BP.
|
||||
Ignore tt_ttisstd and tt_ttisut, as they are
|
||||
irrelevant now and counting them could cause
|
||||
sp->goahead to mistakenly remain false. */
|
||||
register const struct ttinfo * ap = &sp->ttis[a];
|
||||
register const struct ttinfo * bp = &sp->ttis[b];
|
||||
result = (ap->tt_utoff == bp->tt_utoff
|
||||
&& ap->tt_isdst == bp->tt_isdst
|
||||
&& (strcmp(&sp->chars[ap->tt_desigidx],
|
||||
&sp->chars[bp->tt_desigidx])
|
||||
== 0));
|
||||
}
|
||||
return result;
|
||||
}
|
||||
|
||||
static const int mon_lengths[2][MONSPERYEAR] = {
|
||||
{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
|
||||
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
|
||||
|
|
@ -976,8 +944,8 @@ getsecs(register const char *strp, int_fast32_t *const secsp)
|
|||
int_fast32_t secsperhour = SECSPERHOUR;
|
||||
|
||||
/*
|
||||
** 'HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like
|
||||
** "M10.4.6/26", which does not conform to Posix,
|
||||
** 'HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-POSIX rules like
|
||||
** "M10.4.6/26", which does not conform to POSIX,
|
||||
** but which specifies the equivalent of
|
||||
** "02:00 on the first Sunday on or after 23 Oct".
|
||||
*/
|
||||
|
|
@ -1030,7 +998,8 @@ getoffset(register const char *strp, int_fast32_t *const offsetp)
|
|||
|
||||
/*
|
||||
** Given a pointer into a timezone string, extract a rule in the form
|
||||
** date[/time]. See POSIX section 8 for the format of "date" and "time".
|
||||
** date[/time]. See POSIX Base Definitions section 8.3 variable TZ
|
||||
** for the format of "date" and "time".
|
||||
** If a valid rule is not found, return NULL.
|
||||
** Otherwise, return a pointer to the first character not part of the rule.
|
||||
*/
|
||||
|
|
@ -1174,12 +1143,12 @@ transtime(const int year, register const struct rule *const rulep,
|
|||
}
|
||||
|
||||
/*
|
||||
** Given a POSIX section 8-style TZ string, fill in the rule tables as
|
||||
** Given a POSIX.1-2017-style TZ string, fill in the rule tables as
|
||||
** appropriate.
|
||||
*/
|
||||
|
||||
static bool
|
||||
tzparse(const char *name, struct state *sp, struct state *basep)
|
||||
tzparse(const char *name, struct state *sp, struct state const *basep)
|
||||
{
|
||||
const char * stdname;
|
||||
const char * dstname;
|
||||
|
|
@ -1222,6 +1191,7 @@ tzparse(const char *name, struct state *sp, struct state *basep)
|
|||
}
|
||||
if (0 < sp->leapcnt)
|
||||
leaplo = sp->lsis[sp->leapcnt - 1].ls_trans;
|
||||
sp->goback = sp->goahead = false;
|
||||
if (*name != '\0') {
|
||||
if (*name == '<') {
|
||||
dstname = ++name;
|
||||
|
|
@ -1269,7 +1239,6 @@ tzparse(const char *name, struct state *sp, struct state *basep)
|
|||
*/
|
||||
init_ttinfo(&sp->ttis[0], -stdoffset, false, 0);
|
||||
init_ttinfo(&sp->ttis[1], -dstoffset, true, stdlen + 1);
|
||||
sp->defaulttype = 0;
|
||||
timecnt = 0;
|
||||
janfirst = 0;
|
||||
yearbeg = EPOCH_YEAR;
|
||||
|
|
@ -1301,7 +1270,7 @@ tzparse(const char *name, struct state *sp, struct state *basep)
|
|||
}
|
||||
|
||||
yearlim = yearbeg;
|
||||
if (increment_overflow(&yearlim, YEARSPERREPEAT + 1))
|
||||
if (increment_overflow(&yearlim, years_of_observations))
|
||||
yearlim = INT_MAX;
|
||||
for (year = yearbeg; year < yearlim; year++) {
|
||||
int_fast32_t
|
||||
|
|
@ -1338,7 +1307,7 @@ tzparse(const char *name, struct state *sp, struct state *basep)
|
|||
if (endtime < leaplo) {
|
||||
yearlim = year;
|
||||
if (increment_overflow(&yearlim,
|
||||
YEARSPERREPEAT + 1))
|
||||
years_of_observations))
|
||||
yearlim = INT_MAX;
|
||||
}
|
||||
if (increment_overflow_time
|
||||
|
|
@ -1350,7 +1319,7 @@ tzparse(const char *name, struct state *sp, struct state *basep)
|
|||
if (! timecnt) {
|
||||
sp->ttis[0] = sp->ttis[1];
|
||||
sp->typecnt = 1; /* Perpetual DST. */
|
||||
} else if (YEARSPERREPEAT < year - yearbeg)
|
||||
} else if (years_of_observations <= year - yearbeg)
|
||||
sp->goback = sp->goahead = true;
|
||||
} else {
|
||||
register int_fast32_t theirstdoffset;
|
||||
|
|
@ -1409,8 +1378,8 @@ tzparse(const char *name, struct state *sp, struct state *basep)
|
|||
/*
|
||||
** Transitions from DST to DDST
|
||||
** will effectively disappear since
|
||||
** POSIX provides for only one DST
|
||||
** offset.
|
||||
** POSIX.1-2017 provides for only one
|
||||
** DST offset.
|
||||
*/
|
||||
if (isdst && !sp->ttis[j].tt_ttisstd) {
|
||||
sp->ats[i] += dstoffset -
|
||||
|
|
@ -1431,15 +1400,14 @@ tzparse(const char *name, struct state *sp, struct state *basep)
|
|||
init_ttinfo(&sp->ttis[0], -stdoffset, false, 0);
|
||||
init_ttinfo(&sp->ttis[1], -dstoffset, true, stdlen + 1);
|
||||
sp->typecnt = 2;
|
||||
sp->defaulttype = 0;
|
||||
}
|
||||
} else {
|
||||
dstlen = 0;
|
||||
sp->typecnt = 1; /* only standard time */
|
||||
sp->timecnt = 0;
|
||||
init_ttinfo(&sp->ttis[0], -stdoffset, false, 0);
|
||||
sp->defaulttype = 0;
|
||||
}
|
||||
sp->defaulttype = 0;
|
||||
sp->charcnt = charcnt;
|
||||
cp = sp->chars;
|
||||
memcpy(cp, stdname, stdlen);
|
||||
|
|
@ -1630,7 +1598,8 @@ tzfree(timezone_t sp)
|
|||
**
|
||||
** If successful and SETNAME is nonzero,
|
||||
** set the applicable parts of tzname, timezone and altzone;
|
||||
** however, it's OK to omit this step if the timezone is POSIX-compatible,
|
||||
** however, it's OK to omit this step
|
||||
** if the timezone is compatible with POSIX.1-2017
|
||||
** since in that case tzset should have already done this step correctly.
|
||||
** SETNAME's type is int_fast32_t for compatibility with gmtsub,
|
||||
** but it is actually a boolean and its value should be 0 or 1.
|
||||
|
|
@ -1869,6 +1838,9 @@ gmtime(const time_t *timep)
|
|||
|
||||
#if STD_INSPIRED
|
||||
|
||||
/* This function is obsolescent and may disappear in future releases.
|
||||
Callers can instead use localtime_rz with a fixed-offset zone. */
|
||||
|
||||
struct tm *
|
||||
offtime_r(time_t const *restrict timep, long offset, struct tm *restrict tmp)
|
||||
{
|
||||
|
|
@ -2510,6 +2482,8 @@ mktime(struct tm *tmp)
|
|||
}
|
||||
|
||||
#if STD_INSPIRED
|
||||
/* This function is obsolescent and may disapper in future releases.
|
||||
Callers can instead use mktime. */
|
||||
time_t
|
||||
timelocal(struct tm *tmp)
|
||||
{
|
||||
|
|
@ -2517,10 +2491,18 @@ timelocal(struct tm *tmp)
|
|||
tmp->tm_isdst = -1; /* in case it wasn't initialized */
|
||||
return mktime(tmp);
|
||||
}
|
||||
#else
|
||||
static
|
||||
#endif
|
||||
time_t
|
||||
|
||||
#ifndef EXTERN_TIMEOFF
|
||||
# ifndef timeoff
|
||||
# define timeoff my_timeoff /* Don't collide with OpenBSD 7.4 <time.h>. */
|
||||
# endif
|
||||
# define EXTERN_TIMEOFF static
|
||||
#endif
|
||||
|
||||
/* This function is obsolescent and may disapper in future releases.
|
||||
Callers can instead use mktime_z with a fixed-offset zone. */
|
||||
EXTERN_TIMEOFF time_t
|
||||
timeoff(struct tm *tmp, long offset)
|
||||
{
|
||||
if (tmp)
|
||||
|
|
|
|||
|
|
@ -292,20 +292,16 @@ will
|
|||
continue to exist in this form in future releases of this code.
|
||||
.SH FILES
|
||||
.ta \w'/usr/share/zoneinfo/posixrules\0\0'u
|
||||
/usr/share/zoneinfo timezone information directory
|
||||
/etc/localtime local timezone file
|
||||
.br
|
||||
/usr/share/zoneinfo/localtime local timezone file
|
||||
/usr/share/zoneinfo timezone directory
|
||||
.br
|
||||
/usr/share/zoneinfo/posixrules default DST rules (obsolete,
|
||||
and can cause bugs if present)
|
||||
/usr/share/zoneinfo/posixrules default DST rules (obsolete)
|
||||
.br
|
||||
/usr/share/zoneinfo/GMT for UTC leap seconds
|
||||
.sp
|
||||
If
|
||||
.B /usr/share/zoneinfo/GMT
|
||||
is absent,
|
||||
UTC leap seconds are loaded from
|
||||
.BR /usr/share/zoneinfo/posixrules .
|
||||
.PP
|
||||
If /usr/share/zoneinfo/GMT is absent,
|
||||
UTC leap seconds are loaded from /usr/share/zoneinfo/GMT0 if present.
|
||||
.SH SEE ALSO
|
||||
getenv(3),
|
||||
newstrftime(3),
|
||||
|
|
|
|||
|
|
@ -64,7 +64,7 @@ strftime \- format date and time
|
|||
The
|
||||
.B strftime
|
||||
function formats the information from
|
||||
.I timeptr
|
||||
.BI * timeptr
|
||||
into the array pointed to by
|
||||
.I buf
|
||||
according to the string pointed to by
|
||||
|
|
@ -85,47 +85,94 @@ bytes are placed into the array.
|
|||
.PP
|
||||
Each conversion specification is replaced by the characters as
|
||||
follows which are then copied into the array.
|
||||
The characters depend on the values of zero or more members of
|
||||
.BI * timeptr
|
||||
as specified by brackets in the description.
|
||||
If a bracketed member name is followed by
|
||||
.q + ,
|
||||
.B strftime
|
||||
can use the named member even though POSIX.1-2017 does not list it;
|
||||
if the name is followed by
|
||||
.q \*- ,
|
||||
.B strftime
|
||||
ignores the member even though POSIX.1-2017 lists it
|
||||
which means portable code should set it.
|
||||
For portability,
|
||||
.BI * timeptr
|
||||
should be initialized as if by a successful call to
|
||||
.BR gmtime ,
|
||||
.BR localtime ,
|
||||
.BR mktime ,
|
||||
.BR timegm ,
|
||||
or similar functions.
|
||||
.TP
|
||||
%A
|
||||
is replaced by the locale's full weekday name.
|
||||
.RI [ tm_wday ]
|
||||
.TP
|
||||
%a
|
||||
is replaced by the locale's abbreviated weekday name.
|
||||
.RI [ tm_wday ]
|
||||
.TP
|
||||
%B
|
||||
is replaced by the locale's full month name.
|
||||
.RI [ tm_mon ]
|
||||
.TP
|
||||
%b or %h
|
||||
is replaced by the locale's abbreviated month name.
|
||||
.RI [ tm_mon ]
|
||||
.TP
|
||||
%C
|
||||
is replaced by the century (a year divided by 100 and truncated to an integer)
|
||||
as a decimal number [00,99].
|
||||
as a decimal number, with at least two digits by default.
|
||||
.RI [ tm_year ]
|
||||
.TP
|
||||
%c
|
||||
is replaced by the locale's appropriate date and time representation.
|
||||
.RI [ tm_year ,
|
||||
.IR tm_yday ,
|
||||
.IR tm_mon ,
|
||||
.IR tm_mday ,
|
||||
.IR tm_wday ,
|
||||
.IR tm_hour ,
|
||||
.IR tm_min ,
|
||||
.IR tm_sec ,
|
||||
.IR tm_gmtoff +,
|
||||
.IR tm_zone +,
|
||||
.IR tm_isdst \*-].
|
||||
.TP
|
||||
%D
|
||||
is equivalent to
|
||||
.c %m/%d/%y .
|
||||
.RI [ tm_year ,
|
||||
.IR tm_mon ,
|
||||
.IR tm_mday ]
|
||||
.TP
|
||||
%d
|
||||
is replaced by the day of the month as a decimal number [01,31].
|
||||
.RI [ tm_mday ]
|
||||
.TP
|
||||
%e
|
||||
is replaced by the day of month as a decimal number [1,31];
|
||||
single digits are preceded by a blank.
|
||||
.RI [ tm_mday ]
|
||||
.TP
|
||||
%F
|
||||
is equivalent to
|
||||
.c %Y-%m-%d
|
||||
(the ISO 8601 date format).
|
||||
.RI [ tm_year ,
|
||||
.IR tm_mon ,
|
||||
.IR tm_mday ]
|
||||
.TP
|
||||
%G
|
||||
is replaced by the ISO 8601 year with century as a decimal number.
|
||||
See also the
|
||||
.c %V
|
||||
conversion specification.
|
||||
.RI [ tm_year ,
|
||||
.IR tm_yday ,
|
||||
.IR tm_wday ]
|
||||
.TP
|
||||
%g
|
||||
is replaced by the ISO 8601 year without century as a decimal number [00,99].
|
||||
|
|
@ -134,29 +181,39 @@ This is the year that includes the greater part of the week.
|
|||
See also the
|
||||
.c %V
|
||||
conversion specification.
|
||||
.RI [ tm_year ,
|
||||
.IR tm_yday ,
|
||||
.IR tm_wday ]
|
||||
.TP
|
||||
%H
|
||||
is replaced by the hour (24-hour clock) as a decimal number [00,23].
|
||||
.RI [ tm_hour ]
|
||||
.TP
|
||||
%I
|
||||
is replaced by the hour (12-hour clock) as a decimal number [01,12].
|
||||
.RI [ tm_hour ]
|
||||
.TP
|
||||
%j
|
||||
is replaced by the day of the year as a decimal number [001,366].
|
||||
.RI [ tm_yday ]
|
||||
.TP
|
||||
%k
|
||||
is replaced by the hour (24-hour clock) as a decimal number [0,23];
|
||||
single digits are preceded by a blank.
|
||||
.RI [ tm_hour ]
|
||||
.TP
|
||||
%l
|
||||
is replaced by the hour (12-hour clock) as a decimal number [1,12];
|
||||
single digits are preceded by a blank.
|
||||
.RI [ tm_hour ]
|
||||
.TP
|
||||
%M
|
||||
is replaced by the minute as a decimal number [00,59].
|
||||
.RI [ tm_min ]
|
||||
.TP
|
||||
%m
|
||||
is replaced by the month as a decimal number [01,12].
|
||||
.RI [ tm_mon ]
|
||||
.TP
|
||||
%n
|
||||
is replaced by a newline.
|
||||
|
|
@ -166,28 +223,58 @@ is replaced by the locale's equivalent of either
|
|||
.q AM
|
||||
or
|
||||
.q PM .
|
||||
.RI [ tm_hour ]
|
||||
.TP
|
||||
%R
|
||||
is replaced by the time in the format
|
||||
.c %H:%M .
|
||||
.RI [ tm_hour ,
|
||||
.IR tm_min ]
|
||||
.TP
|
||||
%r
|
||||
is replaced by the locale's representation of 12-hour clock time
|
||||
using AM/PM notation.
|
||||
.RI [ tm_hour ,
|
||||
.IR tm_min ,
|
||||
.IR tm_sec ]
|
||||
.TP
|
||||
%S
|
||||
is replaced by the second as a decimal number [00,60].
|
||||
The range of
|
||||
seconds is [00,60] instead of [00,59] to allow for the periodic occurrence
|
||||
of leap seconds.
|
||||
.RI [ tm_sec ]
|
||||
.TP
|
||||
%s
|
||||
is replaced by the number of seconds since the Epoch (see
|
||||
.BR ctime (3)).
|
||||
Although %s is reliable in this implementation,
|
||||
it can have glitches on other platforms (notably platforms lacking
|
||||
.IR tm_gmtoff ),
|
||||
so portable code should format a
|
||||
.B time_t
|
||||
value directly via something like
|
||||
.B sprintf
|
||||
instead of via
|
||||
.B localtime
|
||||
followed by
|
||||
.B strftime
|
||||
with "%s".
|
||||
.RI [ tm_year ,
|
||||
.IR tm_mon ,
|
||||
.IR tm_mday ,
|
||||
.IR tm_hour ,
|
||||
.IR tm_min ,
|
||||
.IR tm_sec ,
|
||||
.IR tm_gmtoff +,
|
||||
.IR tm_isdst \*-].
|
||||
.TP
|
||||
%T
|
||||
is replaced by the time in the format
|
||||
.c %H:%M:%S .
|
||||
.RI [ tm_hour ,
|
||||
.IR tm_min ,
|
||||
.IR tm_sec ]
|
||||
.TP
|
||||
%t
|
||||
is replaced by a tab.
|
||||
|
|
@ -195,10 +282,14 @@ is replaced by a tab.
|
|||
%U
|
||||
is replaced by the week number of the year (Sunday as the first day of
|
||||
the week) as a decimal number [00,53].
|
||||
.RI [ tm_wday ,
|
||||
.IR tm_yday ,
|
||||
.IR tm_year \*-]
|
||||
.TP
|
||||
%u
|
||||
is replaced by the weekday (Monday as the first day of the week)
|
||||
as a decimal number [1,7].
|
||||
.RI [ tm_wday ]
|
||||
.TP
|
||||
%V
|
||||
is replaced by the week number of the year (Monday as the first day of
|
||||
|
|
@ -208,30 +299,64 @@ it is week 53 of the previous year, and the next week is week 1.
|
|||
The year is given by the
|
||||
.c %G
|
||||
conversion specification.
|
||||
.RI [ tm_year ,
|
||||
.IR tm_yday ,
|
||||
.IR tm_wday ]
|
||||
.TP
|
||||
%W
|
||||
is replaced by the week number of the year (Monday as the first day of
|
||||
the week) as a decimal number [00,53].
|
||||
.RI [ tm_yday ,
|
||||
.IR tm_wday ]
|
||||
.TP
|
||||
%w
|
||||
is replaced by the weekday (Sunday as the first day of the week)
|
||||
as a decimal number [0,6].
|
||||
.RI [ tm_year ,
|
||||
.IR tm_yday ,
|
||||
.IR tm_wday ]
|
||||
.TP
|
||||
%X
|
||||
is replaced by the locale's appropriate time representation.
|
||||
.RI [ tm_year \*-,
|
||||
.IR tm_yday \*-,
|
||||
.IR tm_mon \*-,
|
||||
.IR tm_mday \*-,
|
||||
.IR tm_wday \*-,
|
||||
.IR tm_hour ,
|
||||
.IR tm_min ,
|
||||
.IR tm_sec ,
|
||||
.IR tm_gmtoff +,
|
||||
.IR tm_zone +,
|
||||
.IR tm_isdst \*-].
|
||||
.TP
|
||||
%x
|
||||
is replaced by the locale's appropriate date representation.
|
||||
.RI [ tm_year ,
|
||||
.IR tm_yday ,
|
||||
.IR tm_mon ,
|
||||
.IR tm_mday ,
|
||||
.IR tm_wday ,
|
||||
.IR tm_hour \*-,
|
||||
.IR tm_min \*-,
|
||||
.IR tm_sec \*-,
|
||||
.IR tm_gmtoff \*-,
|
||||
.IR tm_zone \*-,
|
||||
.IR tm_isdst \*-].
|
||||
.TP
|
||||
%Y
|
||||
is replaced by the year with century as a decimal number.
|
||||
.RI [ tm_year ]
|
||||
.TP
|
||||
%y
|
||||
is replaced by the year without century as a decimal number [00,99].
|
||||
.RI [ tm_year ]
|
||||
.TP
|
||||
%Z
|
||||
is replaced by the time zone abbreviation,
|
||||
or by the empty string if this is not determinable.
|
||||
.RI [ tm_zone +,
|
||||
.IR tm_isdst \*-]
|
||||
.TP
|
||||
%z
|
||||
is replaced by the offset from the Prime Meridian
|
||||
|
|
@ -244,6 +369,9 @@ but local time is indeterminate; by convention this is used for
|
|||
locations while uninhabited, and corresponds to a zero offset when the
|
||||
time zone abbreviation begins with
|
||||
.q "\*-" .
|
||||
.RI [ tm_gmtoff +,
|
||||
.IR tm_zone +,
|
||||
.IR tm_isdst \*-]
|
||||
.TP
|
||||
%%
|
||||
is replaced by a single %.
|
||||
|
|
@ -252,6 +380,26 @@ is replaced by a single %.
|
|||
is replaced by the locale's date and time in
|
||||
.BR date (1)
|
||||
format.
|
||||
.RI [ tm_year ,
|
||||
.IR tm_yday ,
|
||||
.IR tm_mon ,
|
||||
.IR tm_mday ,
|
||||
.IR tm_wday ,
|
||||
.IR tm_hour ,
|
||||
.IR tm_min ,
|
||||
.IR tm_sec ,
|
||||
.IR tm_gmtoff ,
|
||||
.IR tm_zone ]
|
||||
.PP
|
||||
As a side effect,
|
||||
.B strftime
|
||||
also behaves as if
|
||||
.B tzset
|
||||
were called.
|
||||
This is for compatibility with older platforms, as required by POSIX;
|
||||
it is not needed for
|
||||
.BR tzset 's
|
||||
own use.
|
||||
.SH "RETURN VALUE"
|
||||
If the conversion is successful,
|
||||
.B strftime
|
||||
|
|
|
|||
|
|
@ -9,9 +9,9 @@ tzset \- initialize time conversion information
|
|||
.el .ds - \-
|
||||
.B #include <time.h>
|
||||
.PP
|
||||
.B timezone_t tzalloc(char const *TZ);
|
||||
.BI "timezone_t tzalloc(char const *" TZ );
|
||||
.PP
|
||||
.B void tzfree(timezone_t tz);
|
||||
.BI "void tzfree(timezone_t " tz );
|
||||
.PP
|
||||
.B void tzset(void);
|
||||
.PP
|
||||
|
|
@ -31,62 +31,30 @@ The
|
|||
.B tzalloc
|
||||
function
|
||||
allocates and returns a timezone object described by
|
||||
.BR TZ .
|
||||
If
|
||||
.B TZ
|
||||
is not a valid timezone description, or if the object cannot be allocated,
|
||||
.B tzalloc
|
||||
returns a null pointer and sets
|
||||
.BR errno .
|
||||
.PP
|
||||
The
|
||||
.B tzfree
|
||||
function
|
||||
frees a timezone object
|
||||
.BR tz ,
|
||||
which should have been successfully allocated by
|
||||
.BR tzalloc .
|
||||
This invalidates any
|
||||
.B tm_zone
|
||||
pointers that
|
||||
.B tz
|
||||
was used to set.
|
||||
.PP
|
||||
The
|
||||
.B tzset
|
||||
function
|
||||
acts like
|
||||
.BR tzalloc(getenv("TZ")) ,
|
||||
except it saves any resulting timezone object into internal
|
||||
storage that is accessed by
|
||||
.BR localtime ,
|
||||
.BR localtime_r ,
|
||||
and
|
||||
.BR mktime .
|
||||
The anonymous shared timezone object is freed by the next call to
|
||||
.BR tzset .
|
||||
If the implied call to
|
||||
.B tzalloc
|
||||
fails,
|
||||
.B tzset
|
||||
falls back on Universal Time (UT).
|
||||
.IR TZ .
|
||||
.PP
|
||||
If
|
||||
.B TZ
|
||||
is null, the best available approximation to local (wall
|
||||
.I TZ
|
||||
is a null pointer,
|
||||
.B tzalloc
|
||||
uses the best available approximation to local (wall
|
||||
clock) time, as specified by the
|
||||
.BR tzfile (5)-format
|
||||
file
|
||||
.B localtime
|
||||
in the system time conversion information directory, is used.
|
||||
in the system time conversion information directory.
|
||||
.PP
|
||||
If
|
||||
.B TZ
|
||||
.I TZ
|
||||
is the empty string,
|
||||
UT is used, with the abbreviation "UTC"
|
||||
.B tzalloc
|
||||
uses Universal Time (UT), with the abbreviation "UTC"
|
||||
and without leap second correction; please see
|
||||
.BR newctime (3)
|
||||
for more about UT, UTC, and leap seconds. If
|
||||
.B TZ
|
||||
for more about UT, UTC, and leap seconds.
|
||||
.PP
|
||||
If
|
||||
.I TZ
|
||||
is nonnull and nonempty:
|
||||
.IP
|
||||
if the value begins with a colon, it is used as a pathname of a file
|
||||
|
|
@ -98,24 +66,25 @@ and, if that file cannot be read, is used directly as a specification of
|
|||
the time conversion information.
|
||||
.PP
|
||||
When
|
||||
.B TZ
|
||||
is used as a pathname, if it begins with a slash,
|
||||
it is used as an absolute pathname; otherwise,
|
||||
it is used as a pathname relative to a system time conversion information
|
||||
.I TZ
|
||||
contents are used as a pathname, a pathname beginning with
|
||||
.q "/"
|
||||
is used as-is; otherwise
|
||||
the pathname is relative to a system time conversion information
|
||||
directory.
|
||||
The file must be in the format specified in
|
||||
.BR tzfile (5).
|
||||
.PP
|
||||
When
|
||||
.B TZ
|
||||
.I TZ
|
||||
is used directly as a specification of the time conversion information,
|
||||
it must have the following syntax (spaces inserted for clarity):
|
||||
it must have the following syntax:
|
||||
.IP
|
||||
\fIstd\|offset\fR[\fIdst\fR[\fIoffset\fR][\fB,\fIrule\fR]]
|
||||
.PP
|
||||
Where:
|
||||
.RS
|
||||
.TP 15
|
||||
.TP
|
||||
.IR std " and " dst
|
||||
Three or more bytes that are the designation for the standard
|
||||
.RI ( std )
|
||||
|
|
@ -196,7 +165,7 @@ describes when the change back happens. Each
|
|||
.I time
|
||||
field describes when, in current local time, the change to the other
|
||||
time is made.
|
||||
As an extension to POSIX, daylight saving is assumed to be in effect
|
||||
As an extension to POSIX.1-2017, daylight saving is assumed to be in effect
|
||||
all year if it begins January 1 at 00:00 and ends December 31 at
|
||||
24:00 plus the difference between daylight saving and standard time,
|
||||
leaving no room for standard time in the calendar.
|
||||
|
|
@ -205,7 +174,7 @@ The format of
|
|||
.I date
|
||||
is one of the following:
|
||||
.RS
|
||||
.TP 10
|
||||
.TP
|
||||
.BI J n
|
||||
The Julian day
|
||||
.I n
|
||||
|
|
@ -238,16 +207,16 @@ first week in which the
|
|||
.IR d' th
|
||||
day occurs. Day zero is Sunday.
|
||||
.RE
|
||||
.IP "" 15
|
||||
.IP
|
||||
The
|
||||
.I time
|
||||
has the same format as
|
||||
.I offset
|
||||
except that POSIX does not allow a leading sign (\c
|
||||
except that POSIX.1-2017 does not allow a leading sign (\c
|
||||
.q "\*-"
|
||||
or
|
||||
.q "+" ).
|
||||
As an extension to POSIX, the hours part of
|
||||
As an extension to POSIX.1-2017, the hours part of
|
||||
.I time
|
||||
can range from \-167 through 167; this allows for unusual rules such
|
||||
as
|
||||
|
|
@ -259,9 +228,9 @@ is not given, is
|
|||
.RE
|
||||
.LP
|
||||
Here are some examples of
|
||||
.B TZ
|
||||
.I TZ
|
||||
values that directly specify the timezone; they use some of the
|
||||
extensions to POSIX.
|
||||
extensions to POSIX.1-2017.
|
||||
.TP
|
||||
.B EST5
|
||||
stands for US Eastern Standard
|
||||
|
|
@ -306,43 +275,114 @@ The abbreviations for standard and daylight saving time are
|
|||
and
|
||||
.q "\*-02".
|
||||
.PP
|
||||
If no
|
||||
.I rule
|
||||
is present in
|
||||
.BR TZ ,
|
||||
the rules specified
|
||||
by the
|
||||
If
|
||||
.I TZ
|
||||
specifies daylight saving time but does not specify a
|
||||
.IR rule ,
|
||||
and the optional
|
||||
.BR tzfile (5)-format
|
||||
file
|
||||
.B posixrules
|
||||
in the system time conversion information directory are used, with the
|
||||
standard and daylight saving time offsets from UT replaced by those specified by
|
||||
the
|
||||
is present in the system time conversion information directory, the
|
||||
rules in
|
||||
.B posixrules
|
||||
are used, with the
|
||||
.B posixrules
|
||||
standard and daylight saving time offsets from UT
|
||||
replaced by those specified by the
|
||||
.I offset
|
||||
values in
|
||||
.BR TZ .
|
||||
.IR TZ .
|
||||
However, the
|
||||
.B posixrules
|
||||
file is obsolete: if it is present it is only for backward compatibility,
|
||||
and it does not work reliably.
|
||||
Therefore, if a
|
||||
.I TZ
|
||||
string directly specifies a timezone with daylight saving time,
|
||||
it should specify the daylight saving rules explicitly.
|
||||
.PP
|
||||
For compatibility with System V Release 3.1, a semicolon
|
||||
.RB ( ; )
|
||||
may be used to separate the
|
||||
.I rule
|
||||
from the rest of the specification.
|
||||
from the rest of the specification;
|
||||
this is an extension to POSIX.
|
||||
.PP
|
||||
The
|
||||
.B tzfree
|
||||
function
|
||||
frees a timezone object
|
||||
.IR tz ,
|
||||
which should have been successfully allocated by
|
||||
.BR tzalloc .
|
||||
This invalidates any
|
||||
.B tm_zone
|
||||
pointers that
|
||||
.I tz
|
||||
was used to set.
|
||||
.PP
|
||||
The
|
||||
.B tzset
|
||||
function
|
||||
acts like
|
||||
.BR tzalloc(getenv("TZ")) ,
|
||||
except it saves any resulting timezone object into internal
|
||||
storage that is accessed by
|
||||
.BR localtime ,
|
||||
.BR localtime_r ,
|
||||
and
|
||||
.BR mktime .
|
||||
The anonymous shared timezone object is freed by the next call to
|
||||
.BR tzset .
|
||||
If the implied call to
|
||||
.B getenv
|
||||
fails,
|
||||
.B tzset
|
||||
acts like
|
||||
.BR tzalloc(nullptr) ;
|
||||
if the implied call to
|
||||
.B tzalloc
|
||||
fails,
|
||||
.B tzset
|
||||
falls back on UT.
|
||||
.SH "RETURN VALUE"
|
||||
If successful, the
|
||||
.B tzalloc
|
||||
function returns a nonnull pointer to the newly allocated object.
|
||||
Otherwise, it returns a null pointer and sets
|
||||
.IR errno .
|
||||
.SH ERRORS
|
||||
.TP
|
||||
.B EOVERFLOW
|
||||
.I TZ
|
||||
directly specifies time conversion information,
|
||||
and contains an integer out of machine range
|
||||
or a time zone abbreviation that is too long for this platform.
|
||||
.PP
|
||||
The
|
||||
.B tzalloc
|
||||
function may also fail and set
|
||||
.I errno
|
||||
for any of the errors specified for the routines
|
||||
.BR access (2),
|
||||
.BR close (2),
|
||||
.BR malloc (3),
|
||||
.BR open (2),
|
||||
and
|
||||
.BR read (2).
|
||||
.SH FILES
|
||||
.ta \w'/usr/share/zoneinfo/posixrules\0\0'u
|
||||
/usr/share/zoneinfo timezone information directory
|
||||
/etc/localtime local timezone file
|
||||
.br
|
||||
/usr/share/zoneinfo/localtime local timezone file
|
||||
/usr/share/zoneinfo timezone directory
|
||||
.br
|
||||
/usr/share/zoneinfo/posixrules default DST rules (obsolete,
|
||||
and can cause bugs if present)
|
||||
/usr/share/zoneinfo/posixrules default DST rules (obsolete)
|
||||
.br
|
||||
/usr/share/zoneinfo/GMT for UTC leap seconds
|
||||
.sp
|
||||
If
|
||||
.B /usr/share/zoneinfo/GMT
|
||||
is absent,
|
||||
UTC leap seconds are loaded from
|
||||
.BR /usr/share/zoneinfo/posixrules .
|
||||
.PP
|
||||
If /usr/share/zoneinfo/GMT is absent,
|
||||
UTC leap seconds are loaded from /usr/share/zoneinfo/GMT0 if present.
|
||||
.SH SEE ALSO
|
||||
getenv(3),
|
||||
newctime(3),
|
||||
|
|
|
|||
|
|
@ -18,11 +18,15 @@
|
|||
*/
|
||||
|
||||
/* PORT_TO_C89 means the code should work even if the underlying
|
||||
compiler and library support only C89. SUPPORT_C89 means the
|
||||
compiler and library support only C89 plus C99's 'long long'
|
||||
and perhaps a few other extensions to C89. SUPPORT_C89 means the
|
||||
tzcode library should support C89 callers in addition to the usual
|
||||
support for C99-and-later callers. These macros are obsolescent,
|
||||
support for C99-and-later callers; however, C89 support can trigger
|
||||
latent bugs in C99-and-later callers. These macros are obsolescent,
|
||||
and the plan is to remove them along with any code needed only when
|
||||
they are nonzero. */
|
||||
they are nonzero. A good time to do that might be in the year 2029
|
||||
because RHEL 7 (whose GCC defaults to C89) extended life cycle
|
||||
support (ELS) is scheduled to end on 2028-06-30. */
|
||||
#ifndef PORT_TO_C89
|
||||
# define PORT_TO_C89 0
|
||||
#endif
|
||||
|
|
@ -70,9 +74,7 @@
|
|||
#endif
|
||||
|
||||
#if !defined HAVE__GENERIC && defined __has_extension
|
||||
# if __has_extension(c_generic_selections)
|
||||
# define HAVE__GENERIC 1
|
||||
# else
|
||||
# if !__has_extension(c_generic_selections)
|
||||
# define HAVE__GENERIC 0
|
||||
# endif
|
||||
#endif
|
||||
|
|
@ -759,7 +761,7 @@ struct tm *offtime_r(time_t const *, long, struct tm *);
|
|||
time_t timelocal(struct tm *);
|
||||
# endif
|
||||
# if TZ_TIME_T || !defined timeoff
|
||||
time_t timeoff(struct tm *, long);
|
||||
# define EXTERN_TIMEOFF
|
||||
# endif
|
||||
# if TZ_TIME_T || !defined time2posix
|
||||
time_t time2posix(time_t);
|
||||
|
|
@ -771,7 +773,8 @@ time_t posix2time(time_t);
|
|||
|
||||
/* Infer TM_ZONE on systems where this information is known, but suppress
|
||||
guessing if NO_TM_ZONE is defined. Similarly for TM_GMTOFF. */
|
||||
#if (defined __GLIBC__ \
|
||||
#if (200809 < _POSIX_VERSION \
|
||||
|| defined __GLIBC__ \
|
||||
|| defined __tm_zone /* musl */ \
|
||||
|| defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ \
|
||||
|| (defined __APPLE__ && defined __MACH__))
|
||||
|
|
@ -901,6 +904,19 @@ static_assert(! TYPE_SIGNED(time_t) || ! SIGNED_PADDING_CHECK_NEEDED
|
|||
# define UNINIT_TRAP 0
|
||||
#endif
|
||||
|
||||
/* localtime.c sometimes needs access to timeoff if it is not already public.
|
||||
tz_private_timeoff should be used only by localtime.c. */
|
||||
#if (!defined EXTERN_TIMEOFF \
|
||||
&& defined TM_GMTOFF && (200809 < _POSIX_VERSION || ! UNINIT_TRAP))
|
||||
# ifndef timeoff
|
||||
# define timeoff tz_private_timeoff
|
||||
# endif
|
||||
# define EXTERN_TIMEOFF
|
||||
#endif
|
||||
#ifdef EXTERN_TIMEOFF
|
||||
time_t timeoff(struct tm *, long);
|
||||
#endif
|
||||
|
||||
#ifdef DEBUG
|
||||
# undef unreachable
|
||||
# define unreachable() abort()
|
||||
|
|
@ -960,6 +976,18 @@ enum {
|
|||
#define SECSPERREPEAT ((int_fast64_t) DAYSPERREPEAT * SECSPERDAY)
|
||||
#define AVGSECSPERYEAR (SECSPERREPEAT / YEARSPERREPEAT)
|
||||
|
||||
/* How many years to generate (in zic.c) or search through (in localtime.c).
|
||||
This is two years larger than the obvious 400, to avoid edge cases.
|
||||
E.g., suppose a non-POSIX.1-2017 rule applies from 2012 on with transitions
|
||||
in March and September, plus one-off transitions in November 2013.
|
||||
If zic looked only at the last 400 years, it would set max_year=2413,
|
||||
with the intent that the 400 years 2014 through 2413 will be repeated.
|
||||
The last transition listed in the tzfile would be in 2413-09,
|
||||
less than 400 years after the last one-off transition in 2013-11.
|
||||
Two years is not overkill for localtime.c, as a one-year bump
|
||||
would mishandle 2023d's America/Ciudad_Juarez for November 2422. */
|
||||
enum { years_of_observations = YEARSPERREPEAT + 2 };
|
||||
|
||||
enum {
|
||||
TM_SUNDAY,
|
||||
TM_MONDAY,
|
||||
|
|
|
|||
|
|
@ -327,11 +327,12 @@ _fmt(const char *format, const struct tm *t, char *pt,
|
|||
tm.tm_mday = t->tm_mday;
|
||||
tm.tm_mon = t->tm_mon;
|
||||
tm.tm_year = t->tm_year;
|
||||
#ifdef TM_GMTOFF
|
||||
mkt = timeoff(&tm, t->TM_GMTOFF);
|
||||
#else
|
||||
tm.tm_isdst = t->tm_isdst;
|
||||
#if defined TM_GMTOFF && ! UNINIT_TRAP
|
||||
tm.TM_GMTOFF = t->TM_GMTOFF;
|
||||
#endif
|
||||
mkt = mktime(&tm);
|
||||
#endif
|
||||
/* If mktime fails, %s expands to the
|
||||
value of (time_t) -1 as a failure
|
||||
marker; this is better in practice
|
||||
|
|
|
|||
|
|
@ -95,7 +95,7 @@ Group Base Specifications Issue 7</a>, IEEE Std 1003.1-2017, 2018
|
|||
Edition.
|
||||
Because the database's scope encompasses real-world changes to civil
|
||||
timekeeping, its model for describing time is more complex than the
|
||||
standard and daylight saving times supported by POSIX.
|
||||
standard and daylight saving times supported by POSIX.1-2017.
|
||||
A <code><abbr>tz</abbr></code> timezone corresponds to a ruleset that can
|
||||
have more than two changes per year, these changes need not merely
|
||||
flip back and forth between two alternatives, and the rules themselves
|
||||
|
|
@ -187,7 +187,7 @@ in decreasing order of importance:
|
|||
href="https://en.wikipedia.org/wiki/ASCII">ASCII</a> letters,
|
||||
'<code>.</code>', '<code>-</code>' and '<code>_</code>'.
|
||||
Do not use digits, as that might create an ambiguity with <a
|
||||
href="https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03">POSIX
|
||||
href="https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap08.html#tag_08_03">POSIX.1-2017
|
||||
<code>TZ</code> strings</a>.
|
||||
A file name component must not exceed 14 characters or start with
|
||||
'<code>-</code>'.
|
||||
|
|
@ -362,6 +362,11 @@ The backward-compatibility file <code>zone.tab</code> is similar
|
|||
but conforms to the older-version guidelines related to <abbr>ISO</abbr> 3166-1;
|
||||
it lists only one country code per entry and unlike <code>zone1970.tab</code>
|
||||
it can list names defined in <code>backward</code>.
|
||||
Applications that process only timestamps from now on can instead use the file
|
||||
<code>zonenow.tab</code>, which partitions the world more coarsely,
|
||||
into regions where clocks agree now and in the predicted future;
|
||||
this file is smaller and simpler than <code>zone1970.tab</code>
|
||||
and <code>zone.tab</code>.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
|
|
@ -373,7 +378,7 @@ nowadays distributions typically use it
|
|||
and no great weight should be attached to whether a link
|
||||
is defined in <code>backward</code> or in some other file.
|
||||
The source file <code>etcetera</code> defines names that may be useful
|
||||
on platforms that do not support POSIX-style <code>TZ</code> strings;
|
||||
on platforms that do not support POSIX.1-2017-style <code>TZ</code> strings;
|
||||
no other source file other than <code>backward</code>
|
||||
contains links to its zones.
|
||||
One of <code>etcetera</code>'s names is <code>Etc/UTC</code>,
|
||||
|
|
@ -421,7 +426,7 @@ in decreasing order of importance:
|
|||
expression <code>[-+[:alnum:]]{3,6}</code> should match the
|
||||
abbreviation.
|
||||
This guarantees that all abbreviations could have been specified by a
|
||||
POSIX <code>TZ</code> string.
|
||||
POSIX.1-2017 <code>TZ</code> string.
|
||||
</p>
|
||||
</li>
|
||||
<li>
|
||||
|
|
@ -765,12 +770,12 @@ href="https://www.dissentmagazine.org/blog/booked-a-global-history-of-time-vanes
|
|||
calendar with 24-hour days. These divergences range from
|
||||
relatively minor, such as Japanese bars giving times like "24:30" for the
|
||||
wee hours of the morning, to more-significant differences such as <a
|
||||
href="https://www.pri.org/stories/2015-01-30/if-you-have-meeting-ethiopia-you-better-double-check-time">the
|
||||
href="https://theworld.org/stories/2015-01-30/if-you-have-meeting-ethiopia-you-better-double-check-time">the
|
||||
east African practice of starting the day at dawn</a>, renumbering
|
||||
the Western 06:00 to be 12:00. These practices are largely outside
|
||||
the scope of the <code><abbr>tz</abbr></code> code and data, which
|
||||
provide only limited support for date and time localization
|
||||
such as that required by POSIX.
|
||||
such as that required by POSIX.1-2017.
|
||||
If <abbr>DST</abbr> is not used a different time zone
|
||||
can often do the trick; for example, in Kenya a <code>TZ</code> setting
|
||||
like <code><-03>3</code> or <code>America/Cayenne</code> starts
|
||||
|
|
@ -867,23 +872,23 @@ input is occasionally extended, and a platform may still be shipping
|
|||
an older <code>zic</code>.
|
||||
</p>
|
||||
|
||||
<h3 id="POSIX">POSIX properties and limitations</h3>
|
||||
<h3 id="POSIX">POSIX.1-2017 properties and limitations</h3>
|
||||
<ul>
|
||||
<li>
|
||||
<p>
|
||||
In POSIX, time display in a process is controlled by the
|
||||
In POSIX.1-2017, time display in a process is controlled by the
|
||||
environment variable <code>TZ</code>.
|
||||
Unfortunately, the POSIX
|
||||
Unfortunately, the POSIX.1-2017
|
||||
<code>TZ</code> string takes a form that is hard to describe and
|
||||
is error-prone in practice.
|
||||
Also, POSIX <code>TZ</code> strings cannot deal with daylight
|
||||
Also, POSIX.1-2017 <code>TZ</code> strings cannot deal with daylight
|
||||
saving time rules not based on the Gregorian calendar (as in
|
||||
Morocco), or with situations where more than two time zone
|
||||
abbreviations or <abbr>UT</abbr> offsets are used in an area.
|
||||
</p>
|
||||
|
||||
<p>
|
||||
The POSIX <code>TZ</code> string takes the following form:
|
||||
The POSIX.1-2017 <code>TZ</code> string takes the following form:
|
||||
</p>
|
||||
|
||||
<p>
|
||||
|
|
@ -950,7 +955,7 @@ an older <code>zic</code>.
|
|||
</dl>
|
||||
|
||||
<p>
|
||||
Here is an example POSIX <code>TZ</code> string for New
|
||||
Here is an example POSIX.1-2017 <code>TZ</code> string for New
|
||||
Zealand after 2007.
|
||||
It says that standard time (<abbr>NZST</abbr>) is 12 hours ahead
|
||||
of <abbr>UT</abbr>, and that daylight saving time
|
||||
|
|
@ -961,7 +966,7 @@ an older <code>zic</code>.
|
|||
<pre><code>TZ='NZST-12NZDT,M9.5.0,M4.1.0/3'</code></pre>
|
||||
|
||||
<p>
|
||||
This POSIX <code>TZ</code> string is hard to remember, and
|
||||
This POSIX.1-2017 <code>TZ</code> string is hard to remember, and
|
||||
mishandles some timestamps before 2008.
|
||||
With this package you can use this instead:
|
||||
</p>
|
||||
|
|
@ -999,7 +1004,7 @@ an older <code>zic</code>.
|
|||
limit phone calls to off-peak hours.
|
||||
</li>
|
||||
<li>
|
||||
POSIX provides no convenient and efficient way to determine
|
||||
POSIX.1-2017 provides no convenient and efficient way to determine
|
||||
the <abbr>UT</abbr> offset and time zone abbreviation of arbitrary
|
||||
timestamps, particularly for timezones
|
||||
that do not fit into the POSIX model.
|
||||
|
|
@ -1026,14 +1031,14 @@ an older <code>zic</code>.
|
|||
</li>
|
||||
</ul>
|
||||
|
||||
<h3 id="POSIX-extensions">Extensions to POSIX in the
|
||||
<h3 id="POSIX-extensions">Extensions to POSIX.1-2017 in the
|
||||
<code><abbr>tz</abbr></code> code</h3>
|
||||
<ul>
|
||||
<li>
|
||||
<p>
|
||||
The <code>TZ</code> environment variable is used in generating
|
||||
the name of a file from which time-related information is read
|
||||
(or is interpreted à la POSIX); <code>TZ</code> is no longer
|
||||
(or is interpreted à la POSIX.1-2017); <code>TZ</code> is no longer
|
||||
constrained to be a string containing abbreviations
|
||||
and numeric data as described <a href="#POSIX">above</a>.
|
||||
The file's format is <dfn><abbr>TZif</abbr></dfn>,
|
||||
|
|
|
|||
|
|
@ -22,9 +22,10 @@ into problems that programmers have with timekeeping.</li>
|
|||
Explaining The Mysteries Of Time Zones</a>" (2017; 2:15)
|
||||
briefly says why France has more time zones than Russia.
|
||||
<li>
|
||||
"<a href="https://www.youtube.com/watch?v=yRz-Dl60Lfc">Why Denmark is
|
||||
.17 Seconds Behind The World</a>" (2019; 6:29) explains why Denmark and
|
||||
the United Kingdom don't exactly follow their own law about civil time.
|
||||
"<a href="https://www.youtube.com/watch?v=yRz-Dl60Lfc">Why Denmark used to be
|
||||
.04 seconds behind the world</a>" (2019; 6:29) explains why the United Kingdom
|
||||
— and, once, Denmark — haven't always exactly followed their own
|
||||
laws about civil time.
|
||||
<li>
|
||||
"About Time" (1962; 59 minutes) is part of the
|
||||
Bell Science extravaganza, with Frank Baxter, Richard Deacon, and Les Tremayne.
|
||||
|
|
@ -209,7 +210,7 @@ Umberto Eco,
|
|||
Island of the Day Before</em></a>
|
||||
(<em>L'isola del giorno prima</em>), 1994.
|
||||
"...the story of a 17th century Italian nobleman trapped near an island
|
||||
on the International Date Line. Time and time zones play an integral
|
||||
on the International Date Line. Time and time zones play an integral
|
||||
part in the novel." (Paul Eggert, 2006-04-22)
|
||||
</li>
|
||||
<li>
|
||||
|
|
@ -229,94 +230,73 @@ year-round <abbr>DST</abbr> as a way of lessening wintertime despair.
|
|||
</li>
|
||||
</ul>
|
||||
<h2>Music</h2>
|
||||
<p>
|
||||
Data on recordings of "Save That Time," Russ Long, Serrob Publishing, BMI:</p>
|
||||
<table>
|
||||
<tr><td>Artist</td><td>Karrin Allyson</td></tr>
|
||||
<tr><td>CD</td><td>I Didn't Know About You</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1993</td></tr>
|
||||
<tr><td>Label</td><td>Concord Jazz, Inc.</td></tr>
|
||||
<tr><td>ID</td><td>CCD-4543</td></tr>
|
||||
<tr><td>Track Time</td><td>3:44</td></tr>
|
||||
<tr><td>Personnel</td><td>Karrin Allyson, vocal;
|
||||
<ul>
|
||||
<li>
|
||||
Recordings of "Save That Time," Russ Long, Serrob Publishing, BMI:
|
||||
<ul>
|
||||
<li>
|
||||
Karrin Allyson, <em>I Didn't Know About You</em> (1993), track 11, 3:44.
|
||||
Concord Jazz CCD-4543.
|
||||
Karrin Allyson, vocal;
|
||||
Russ Long, piano;
|
||||
Gerald Spaits, bass;
|
||||
Todd Strait, drums</td></tr>
|
||||
<tr><td>Notes</td><td>CD notes "additional lyric by Karrin Allyson;
|
||||
arranged by Russ Long and Karrin Allyson"</td></tr>
|
||||
<tr><td>ADO Rating</td><td>1 star</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/i-didnt-know-about-you-mw0000618657">AMG Rating</a></td><td>4 stars</td></tr>
|
||||
<tr><td>Penguin Rating</td><td>3.5 stars</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>Kevin Mahogany</td></tr>
|
||||
<tr><td>CD</td><td>Double Rainbow</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1993</td></tr>
|
||||
<tr><td>Label</td><td>Enja Records</td></tr>
|
||||
<tr><td>ID</td><td>ENJ-7097 2</td></tr>
|
||||
<tr><td>Track Time</td><td>6:27</td></tr>
|
||||
<tr><td>Personnel</td><td>Kevin Mahogany, vocal;
|
||||
Todd Strait, drums.
|
||||
CD notes "additional lyric by Karrin Allyson;
|
||||
arranged by Russ Long and Karrin Allyson".
|
||||
ADO ★,
|
||||
<a href="https://www.allmusic.com/album/i-didnt-know-about-you-mw0000618657">AMG</a>
|
||||
★★★★, Penguin ★★★⯪.
|
||||
</li>
|
||||
<li>
|
||||
Kevin Mahogany, <em>Double Rainbow</em> (1993), track 3, 6:27. Enja ENJ-7097 2.
|
||||
Kevin Mahogany, vocal;
|
||||
Kenny Barron, piano;
|
||||
Ray Drummond, bass;
|
||||
Ralph Moore, tenor saxophone;
|
||||
Lewis Nash, drums</td></tr>
|
||||
<tr><td>ADO Rating</td><td>1.5 stars</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/double-rainbow-mw0000620371">AMG Rating</a></td><td>3 stars</td></tr>
|
||||
<tr><td>Penguin Rating</td><td>3 stars</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>Joe Williams</td></tr>
|
||||
<tr><td>CD</td><td>Here's to Life</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1994</td></tr>
|
||||
<tr><td>Label</td><td>Telarc International Corporation</td></tr>
|
||||
<tr><td>ID</td><td>CD-83357</td></tr>
|
||||
<tr><td>Track Time</td><td>3:58</td></tr>
|
||||
<tr><td>Personnel</td><td>Joe Williams, vocal
|
||||
The Robert Farnon [39 piece] Orchestra</td></tr>
|
||||
<tr><td>Notes</td><td>This CD is also available as part of a 3-CD package from
|
||||
Telarc, "Triple Play" (CD-83461)</td></tr>
|
||||
<tr><td>ADO Rating</td><td>black dot</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/heres-to-life-mw0000623648">AMG Rating</a></td><td>2 stars</td></tr>
|
||||
<tr><td>Penguin Rating</td><td>3 stars</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>Charles Fambrough</td></tr>
|
||||
<tr><td>CD</td><td>Keeper of the Spirit</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1995</td></tr>
|
||||
<tr><td>Label</td><td>AudioQuest Music</td></tr>
|
||||
<tr><td>ID</td><td>AQ-CD1033</td></tr>
|
||||
<tr><td>Track Time</td><td>7:07</td></tr>
|
||||
<tr><td>Personnel</td><td>Charles Fambrough, bass;
|
||||
Lewis Nash, drums.
|
||||
ADO ★⯪,
|
||||
<a href="https://www.allmusic.com/album/double-rainbow-mw0000620371">AMG</a>
|
||||
★★★, Penguin ★★★.
|
||||
</li>
|
||||
<li>
|
||||
Joe Williams, <em>Here's to Life</em> (1994), track 7, 3:58.
|
||||
Telarc Jazz CD-83357.
|
||||
Joe Williams, vocal; The Robert Farnon [39 piece] Orchestra.
|
||||
Also in a 3-CD package "Triple Play", Telarc CD-83461.
|
||||
ADO •,
|
||||
<a href="https://www.allmusic.com/album/heres-to-life-mw0000623648">AMG</a>
|
||||
★★, Penguin ★★★.
|
||||
</li>
|
||||
<li>
|
||||
Charles Fambrough, <em>Keeper of the Spirit</em> (1995), track 7, 7:07.
|
||||
AudioQuest AQ-CD1033.
|
||||
Charles Fambrough, bass;
|
||||
Joel Levine, tenor recorder;
|
||||
Edward Simon, piano;
|
||||
Lenny White, drums;
|
||||
Marion Simon, percussion</td></tr>
|
||||
<tr><td>ADO Rating</td><td>2 stars</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/keeper-of-the-spirit-mw0000176559">AMG Rating</a></td><td>unrated</td></tr>
|
||||
<tr><td>Penguin Rating</td><td>3 stars</td></tr>
|
||||
</table>
|
||||
<hr>
|
||||
<p>Also of note:</p>
|
||||
<table>
|
||||
<tr><td>Artist</td><td>Holly Cole Trio</td></tr>
|
||||
<tr><td>CD</td><td>Blame It On My Youth</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1992</td></tr>
|
||||
<tr><td>Label</td><td>Manhattan</td></tr>
|
||||
<tr><td>ID</td><td>CDP 7 97349 2</td></tr>
|
||||
<tr><td>Total Time</td><td>37:45</td></tr>
|
||||
<tr><td>Personnel</td><td>Holly Cole, voice;
|
||||
Marion Simon, percussion.
|
||||
ADO ★,
|
||||
<a href="https://www.allmusic.com/album/keeper-of-the-spirit-mw0000176559">AMG</a>
|
||||
unrated, Penguin ★★★.
|
||||
</ul>
|
||||
</li>
|
||||
<li>
|
||||
Holly Cole Trio, Blame It On My Youth (1992). Manhattan CDP 7 97349 2, 37:45.
|
||||
Holly Cole, voice;
|
||||
Aaron Davis, piano;
|
||||
David Piltch, string bass</td></tr>
|
||||
<tr><td>Notes</td><td>Lyrical reference to "Eastern Standard Time" in
|
||||
Tom Waits' "Purple Avenue"</td></tr>
|
||||
<tr><td>ADO Rating</td><td>2.5 stars</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/blame-it-on-my-youth-mw0000274303">AMG Rating</a></td><td>3 stars</td></tr>
|
||||
<tr><td>Penguin Rating</td><td>unrated</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>Milt Hinton</td></tr>
|
||||
<tr><td>CD</td><td>Old Man Time</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1990</td></tr>
|
||||
<tr><td>Label</td><td>Chiaroscuro</td></tr>
|
||||
<tr><td>ID</td><td>CR(D) 310</td></tr>
|
||||
<tr><td>Total Time</td><td>149:38 (two CDs)</td></tr>
|
||||
<tr><td>Personnel</td><td>Milt Hinton, bass;
|
||||
David Piltch, string bass.
|
||||
Lyrical reference to "Eastern Standard Time" in
|
||||
Tom Waits's "Purple Avenue".
|
||||
ADO ★★⯪,
|
||||
<a href="https://www.allmusic.com/album/blame-it-on-my-youth-mw0000274303">AMG</a>
|
||||
★★★, Penguin unrated.
|
||||
</li>
|
||||
<li>
|
||||
Milt Hinton,
|
||||
<a href="https://chiaroscurojazz.org/catalog/old-man-time-2-cd-set/"><em>Old
|
||||
Man Time</em></a> (1990).
|
||||
Chiaroscuro CR(D) 310, 149:38 (two CDs).
|
||||
Milt Hinton, bass;
|
||||
Doc Cheatham, Dizzy Gillespie, Clark Terry, trumpet;
|
||||
Al Grey, trombone;
|
||||
Eddie Barefield, Joe Camel (Flip Phillips), Buddy Tate,
|
||||
|
|
@ -328,165 +308,129 @@ Gus Johnson, Gerryck King, Bob Rosengarden, Jackie Williams,
|
|||
drums;
|
||||
Lionel Hampton, vibraphone;
|
||||
Cab Calloway, Joe Williams, vocal;
|
||||
Buck Clayton, arrangements</td></tr>
|
||||
<tr><td>Notes</td><td>tunes include Old Man Time, Time After Time,
|
||||
Sometimes I'm Happy,
|
||||
A Hot Time in the Old Town Tonight,
|
||||
Four or Five Times, Now's the Time,
|
||||
Time on My Hands, This Time It's Us,
|
||||
and Good Time Charlie.
|
||||
<a href="http://www.chiaroscurojazz.com/album.php?C=310">Album info</a>
|
||||
is available.</td></tr>
|
||||
<tr><td>ADO Rating</td><td>3 stars</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/old-man-time-mw0000269353">AMG Rating</a></td><td>4.5 stars</td></tr>
|
||||
<tr><td>Penguin Rating</td><td>3 stars</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>Alan Broadbent</td></tr>
|
||||
<tr><td>CD</td><td>Pacific Standard Time</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1995</td></tr>
|
||||
<tr><td>Label</td><td>Concord Jazz, Inc.</td></tr>
|
||||
<tr><td>ID</td><td>CCD-4664</td></tr>
|
||||
<tr><td>Total Time</td><td>62:42</td></tr>
|
||||
<tr><td>Personnel</td><td>Alan Broadbent, piano;
|
||||
Buck Clayton, arrangements.
|
||||
Tunes include "Old Man Time", "Time After Time",
|
||||
"Sometimes I'm Happy",
|
||||
"A Hot Time in the Old Town Tonight",
|
||||
"Four or Five Times", "Now's the Time",
|
||||
"Time on My Hands", "This Time It's Us",
|
||||
and "Good Time Charlie".
|
||||
ADO ★★★,
|
||||
<a href="https://www.allmusic.com/album/old-man-time-mw0000269353">AMG</a>
|
||||
★★★★⯪, Penguin ★★★.
|
||||
</li>
|
||||
<li>
|
||||
Alan Broadbent, <em>Pacific Standard Time</em> (1995).
|
||||
Concord Jazz CCD-4664, 62:42.
|
||||
Alan Broadbent, piano;
|
||||
Putter Smith, Bass;
|
||||
Frank Gibson, Jr., drums</td></tr>
|
||||
<tr><td>Notes</td><td>The CD cover features an analemma for equation-of-time fans</td></tr>
|
||||
<tr><td>ADO Rating</td><td>1 star</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/pacific-standard-time-mw0000645433">AMG Rating</a></td><td>4 stars</td></tr>
|
||||
<tr><td>Penguin Rating</td><td>3.5 stars</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>Anthony Braxton/Richard Teitelbaum</td></tr>
|
||||
<tr><td>CD</td><td>Silence/Time Zones</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1996</td></tr>
|
||||
<tr><td>Label</td><td>Black Lion</td></tr>
|
||||
<tr><td>ID</td><td>BLCD 760221</td></tr>
|
||||
<tr><td>Total Time</td><td>72:58</td></tr>
|
||||
<tr><td>Personnel</td><td>Anthony Braxton, sopranino and alto saxophones,
|
||||
Frank Gibson, Jr., drums.
|
||||
The CD cover features an analemma for equation-of-time fans.
|
||||
ADO ★,
|
||||
<a href="https://www.allmusic.com/album/pacific-standard-time-mw0000645433">AMG</a>
|
||||
★★★★, Penguin ★★★⯪.
|
||||
</li>
|
||||
<li>
|
||||
Anthony Braxton/Richard Teitelbaum, <em>Silence/Time Zones</em> (1996).
|
||||
Black Lion BLCD 760221, 72:58.
|
||||
Anthony Braxton, sopranino and alto saxophones,
|
||||
contrebasse clarinet, miscellaneous instruments;
|
||||
Leo Smith, trumpet and miscellaneous instruments;
|
||||
Leroy Jenkins, violin and miscellaneous instruments;
|
||||
Richard Teitelbaum, modular moog and micromoog synthesizer</td></tr>
|
||||
<tr><td>ADO Rating</td><td>black dot</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/silence-time-zones-mw0000595735">AMG Rating</a></td><td>4 stars</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>Charles Gayle</td></tr>
|
||||
<tr><td>CD</td><td>Time Zones</td></tr>
|
||||
<tr><td>Copyright Date</td><td>2006</td></tr>
|
||||
<tr><td>Label</td><td>Tompkins Square</td></tr>
|
||||
<tr><td>ID</td><td>TSQ2839</td></tr>
|
||||
<tr><td>Total Time</td><td>49:06</td></tr>
|
||||
<tr><td>Personnel</td><td>Charles Gayle, piano</td></tr>
|
||||
<tr><td>ADO Rating</td><td>1 star</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/time-zones-mw0000349642">AMG Rating</a></td><td>4.5 stars</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>The Get Up Kids</td></tr>
|
||||
<tr><td>CD</td><td>Eudora</td></tr>
|
||||
<tr><td>Copyright Date</td><td>2001</td></tr>
|
||||
<tr><td>Label</td><td>Vagrant</td></tr>
|
||||
<tr><td>ID</td><td>357</td></tr>
|
||||
<tr><td>Total Time</td><td>65:12</td></tr>
|
||||
<tr><td>Notes</td><td>Includes the song "Central Standard Time." Thanks to Colin Bowern for this information.</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/eudora-mw0000592063">AMG Rating</a></td><td>2.5 stars</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
|
||||
<tr><td>Artist</td><td>Coldplay</td></tr>
|
||||
<tr><td>Song</td><td>Clocks</td></tr>
|
||||
<tr><td>Copyright Date</td><td>2003</td></tr>
|
||||
<tr><td>Label</td><td>Capitol Records</td></tr>
|
||||
<tr><td>ID</td><td>52608</td></tr>
|
||||
<tr><td>Total Time</td><td>4:13</td></tr>
|
||||
<tr><td>Notes</td><td>Won the 2004 Record of the Year honor at the
|
||||
Richard Teitelbaum, modular moog and micromoog synthesizer.
|
||||
ADO •,
|
||||
<a href="https://www.allmusic.com/album/silence-time-zones-mw0000595735">AMG</a>
|
||||
★★★★.
|
||||
</li>
|
||||
<li>
|
||||
Charles Gayle, <em>Time Zones</em> (2006). Tompkins Square TSQ2839, 49:06.
|
||||
Charles Gayle, piano.
|
||||
ADO ★,
|
||||
<a href="https://www.allmusic.com/album/time-zones-mw0000349642">AMG</a>
|
||||
★★★★⯪.
|
||||
</li>
|
||||
<li>
|
||||
The Get Up Kids, <em>Eudora</em> (2001). Vagrant 357, 65:12.
|
||||
Includes the song "Central Standard Time."
|
||||
Thanks to Colin Bowern for this information.
|
||||
<a href="https://www.allmusic.com/album/eudora-mw0000592063">AMG</a>
|
||||
★★⯪.
|
||||
</li>
|
||||
<li>
|
||||
Coldplay, "Clocks" (2003).
|
||||
Capitol 52608, 4:13.
|
||||
Won the 2004 Record of the Year honor at the
|
||||
Grammy Awards. Co-written and performed by Chris Martin,
|
||||
great-great-grandson of <abbr>DST</abbr> inventor William Willett.
|
||||
The song's first line is "Lights go out and I can't be saved".</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
|
||||
<tr><td>Artist</td><td>Jaime Guevara</td></tr>
|
||||
<tr><td>Song</td><td><a
|
||||
The song's first line is "Lights go out and I can't be saved".
|
||||
</li>
|
||||
<li>
|
||||
Jaime Guevara, "<a
|
||||
href="https://www.youtube.com/watch?v=ZfN4Fe_A50U">Qué
|
||||
hora es</a></td></tr>
|
||||
<tr><td>Date</td><td>1993</td></tr>
|
||||
<tr><td>Total Time</td><td>3:04</td></tr>
|
||||
<tr><td>Notes</td><td>The song protested "Sixto Hour" in Ecuador
|
||||
hora es</a>" (1993), 3:04.
|
||||
The song protested "Sixto Hour" in Ecuador
|
||||
(1992–3). Its lyrics include "Amanecía en mitad de la noche, los
|
||||
guaguas iban a clase sin sol" ("It was dawning in the middle of the
|
||||
night, the buses went to class without sun").
|
||||
<tr><td> </td><td></td></tr>
|
||||
|
||||
<tr><td>Artist</td><td>Irving Kahal and Harry Richman</td></tr>
|
||||
<tr><td>Song</td><td>There Ought to be a Moonlight Saving Time</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1931</td>
|
||||
<tr><td>Notes</td><td>This musical standard was a No. 1 hit for Guy Lombardo
|
||||
</li>
|
||||
<li>
|
||||
Irving Kahal and Harry Richman,
|
||||
"There Ought to be a Moonlight Saving Time" (1931).
|
||||
This musical standard was a No. 1 hit for Guy Lombardo
|
||||
in 1931, and was also performed by Maurice Chevalier, Blossom Dearie
|
||||
and many others. The phrase "Moonlight saving time" also appears in
|
||||
the 1995 country song "Not Enough Hours in the Night" written by Aaron
|
||||
Barker, Kim Williams and Rob Harbin and performed by Doug
|
||||
Supernaw.</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
|
||||
<tr><td>Artist</td><td>The Microscopic Septet</td></tr>
|
||||
<tr><td>CD</td><td>Lobster Leaps In</td></tr>
|
||||
<tr><td>Copyright Date</td><td>2008</td></tr>
|
||||
<tr><td>Label</td><td>Cuneiform</td></tr>
|
||||
<tr><td>ID</td><td>272</td></tr>
|
||||
<tr><td>Total Time</td><td>73:05</td></tr>
|
||||
<tr><td>Notes</td><td>Includes the song "Twilight Time Zone."</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/lobster-leaps-in-mw0000794929">AMG Rating</a></td><td>3.5 stars</td></tr>
|
||||
<tr><td>ADO Rating</td><td>2 stars</td></tr>
|
||||
|
||||
<tr><td> </td><td></td></tr>
|
||||
|
||||
<tr><td>Artist</td><td>Bob Dylan</td></tr>
|
||||
<tr><td>CD</td><td>The Times They Are a-Changin'</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1964</td></tr>
|
||||
<tr><td>Label</td><td>Columbia</td></tr>
|
||||
<tr><td>ID</td><td>CK-8905</td></tr>
|
||||
<tr><td>Total Time</td><td>45:36</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/the-times-they-a-changin-mw0000202344">AMG Rating</a></td><td>4.5 stars</td></tr>
|
||||
<tr><td>ADO Rating</td><td>1.5 stars</td></tr>
|
||||
<tr><td>Notes<td>The title song is also available on "Bob Dylan's Greatest Hits" and "The Essential Bob Dylan."</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
|
||||
<tr><td>Artist</td><td>Luciana Souza</td></tr>
|
||||
<tr><td>CD</td><td>Tide</td></tr>
|
||||
<tr><td>Copyright Date</td><td>2009</td></tr>
|
||||
<tr><td>Label</td><td>Universal Jazz France</td></tr>
|
||||
<tr><td>ID</td><td>B0012688-02</td></tr>
|
||||
<tr><td>Total Time</td><td>42:31</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/tide-mw0000815692">AMG Rating</a></td><td>3.5 stars</td></tr>
|
||||
<tr><td>ADO Rating</td><td>2.5 stars</td></tr>
|
||||
<tr><td>Notes<td>Includes the song "Fire and Wood" with the lyric
|
||||
Supernaw.
|
||||
</li>
|
||||
<li>
|
||||
The Microscopic Septet, <em>Lobster Leaps In</em> (2008).
|
||||
Cuneiform 272, 73:05.
|
||||
Includes the song "Twilight Time Zone."
|
||||
ADO ★★,
|
||||
<a href="https://www.allmusic.com/album/lobster-leaps-in-mw0000794929">AMG</a>
|
||||
★★★⯪.
|
||||
</li>
|
||||
<li>
|
||||
Bob Dylan, <em>The Times They Are a-Changin'</em> (1964).
|
||||
Columbia CK-8905, 45:36.
|
||||
ADO ★⯪,
|
||||
<a href="https://www.allmusic.com/album/the-times-they-a-changin-mw0000202344">AMG</a>
|
||||
★★★★⯪.
|
||||
The title song is also available on "Bob Dylan's Greatest Hits" and "The Essential Bob Dylan."
|
||||
</li>
|
||||
<li>
|
||||
Luciana Souza, <em>Tide</em> (2009). Universal Jazz France B0012688-02, 42:31.
|
||||
ADO ★★⯪,
|
||||
<a href="https://www.allmusic.com/album/tide-mw0000815692">AMG</a>
|
||||
★★★⯪.
|
||||
Includes the song "Fire and Wood" with the lyric
|
||||
"The clocks were turned back you remember/Think it's still November."
|
||||
</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>Ken Nordine</td></tr>
|
||||
<tr><td>CD</td><td>You're Getting Better: The Word Jazz Dot Masters</td></tr>
|
||||
<tr><td>Copyright Date</td><td>2005</td></tr>
|
||||
<tr><td>Label</td><td>Geffen</td></tr>
|
||||
<tr><td>ID</td><td>B0005171-02</td></tr>
|
||||
<tr><td>Total Time</td><td>156:22</td></tr>
|
||||
<tr><td>ADO Rating</td><td>1 star</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/youre-getting-better-the-word-jazz-dot-masters-mw0000736197">AMG Rating</a></td><td>4.5 stars</td></tr>
|
||||
<tr><td>Notes</td><td>Includes the piece "What Time Is It"
|
||||
("He knew what time it was everywhere...that counted").</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>Chicago</td></tr>
|
||||
<tr><td>CD</td><td>Chicago Transit Authority</td></tr>
|
||||
<tr><td>Copyright Date</td><td>1969</td></tr>
|
||||
<tr><td>Label</td><td>Columbia</td></tr>
|
||||
<tr><td>ID</td><td>64409</td></tr>
|
||||
<tr><td>Total Time</td><td>1:16:20</td></tr>
|
||||
<tr><td><a href="https://www.allmusic.com/album/chicago-transit-authority-mw0000189364">AMG Rating</a></td><td>4 stars</td></tr>
|
||||
<tr><td>Notes</td><td>Includes the song "Does Anybody Really Know What Time It Is?"</td></tr>
|
||||
<tr><td> </td><td></td></tr>
|
||||
<tr><td>Artist</td><td>Emanuele Arciuli</td></tr>
|
||||
<tr><td>Composer</td><td>William Duckworth</td></tr>
|
||||
<tr><td>CD</td><td><a href="https://neumarecords.org/ols/products/william-duckworth-the-time-curve-preludes">The Time Curve Preludes</a></td></tr>
|
||||
<tr><td>Copyright Date</td><td>2023</td></tr>
|
||||
<tr><td>Label</td><td>Neuma</td></tr>
|
||||
<tr><td>Total Time</td><td>44:46</td></tr>
|
||||
<tr><td>Notes</td><td>The first work of postminimal music. Unlike minimalism, it does not assume that the listener has plenty of time.</td></tr>
|
||||
</table>
|
||||
</li>
|
||||
<li>
|
||||
Ken Nordine, <em>You're Getting Better: The Word Jazz Dot Masters</em> (2005).
|
||||
Geffen B0005171-02, 156:22.
|
||||
ADO ★,
|
||||
<a href="https://www.allmusic.com/album/youre-getting-better-the-word-jazz-dot-masters-mw0000736197">AMG</a>
|
||||
★★★★⯪.
|
||||
Includes the piece "What Time Is It"
|
||||
("He knew what time it was everywhere...that counted").
|
||||
</li>
|
||||
<li>
|
||||
Chicago, <em>Chicago Transit Authority</em> (1969). Columbia 64409, 1:16:20.
|
||||
<a href="https://www.allmusic.com/album/chicago-transit-authority-mw0000189364">AMG</a> ★★★★.
|
||||
Includes the song "Does Anybody Really Know What Time It Is?".
|
||||
</li>
|
||||
<li>
|
||||
Emanuele Arciuli,
|
||||
<a href="https://neumarecords.org/ols/products/william-duckworth-the-time-curve-preludes"><em>The Time Curve Preludes</em></a> (2023).
|
||||
Neuma 174, 44:46.
|
||||
The title piece, composed by
|
||||
<a href="https://en.wikipedia.org/wiki/William_Duckworth_(composer)">William
|
||||
Duckworth</a>, is the first work of postminimal music.
|
||||
Unlike minimalism, it does not assume that the listener has plenty of time.
|
||||
</li>
|
||||
</ul>
|
||||
<h2>Comics</h2>
|
||||
<ul>
|
||||
<li>
|
||||
|
|
@ -506,7 +450,10 @@ along with the panels
|
|||
"<a href="https://xkcd.com/2050/">6/6 Time</a>" (2018-09-24),
|
||||
"<a href="https://xkcd.com/2092/">Consensus New Year</a>" (2018-12-31),
|
||||
"<a href="https://xkcd.com/2266/">Leap Smearing</a>" (2020-02-10),
|
||||
and "<a href="https://xkcd.com/2594/">Consensus Time</a>" (2022-03-16).
|
||||
"<a href="https://xkcd.com/2594/">Consensus Time</a>" (2022-03-16),
|
||||
"<a href="https://xkcd.com/2846/">Daylight Saving Choice</a>" (2023-10-25),
|
||||
"<a href="https://xkcd.com/2854/">Date Line</a>" (2023-11-13),
|
||||
and "<a href="https://xkcd.com/2867/">DateTime</a>" (2023-12-13).
|
||||
The related book <em>What If?</em> has an entry
|
||||
"<a href="https://what-if.xkcd.com/26/">Leap Seconds</a>" (2012-12-31).
|
||||
</li>
|
||||
|
|
@ -519,9 +466,13 @@ Before Swine</em> (2016-11-06)</a>.
|
|||
Stonehenge is abandoned in <a
|
||||
href="https://www.gocomics.com/nonsequitur/2017/03/12"><em>Non Sequitur</em>
|
||||
(2017-03-12)</a>.
|
||||
</li>
|
||||
<li>
|
||||
The boss freaks out in <a
|
||||
href="https://dilbert.com/strip/1998-03-14"><em>Dilbert</em> (1998-03-14)</a>.
|
||||
Caulfield proposes changing clocks just once a year in
|
||||
<a href="https://www.gocomics.com/frazz/2023/12/31"><em>Frazz</em>
|
||||
(2023-12-31)</a>, while Peter and Jason go multi-lingual and -zonal in
|
||||
<a href="https://www.gocomics.com/foxtrot/2023/12/31"><em>FoxTrot</em>
|
||||
(the same day)</a>.
|
||||
</li>
|
||||
<li>
|
||||
Peppermint Patty: "What if the world comes to an end tonight, Marcie?"
|
||||
|
|
@ -605,10 +556,10 @@ entitled "The Kid," originally aired 1997-11-04)
|
|||
</li>
|
||||
<li>
|
||||
"I put myself and my staff through this crazy, huge ordeal, all because
|
||||
I refused to go on at midnight, okay? And so I work, you know, and
|
||||
then I get this job at eleven, supposed to be a big deal. Then
|
||||
I refused to go on at midnight, okay? And so I work, you know, and
|
||||
then I get this job at eleven, supposed to be a big deal. Then
|
||||
yesterday daylight [saving] time ended. Right now it's basically
|
||||
midnight." (Conan O'Brien on the 2010-11-08 premiere of <em>Conan</em>.)
|
||||
midnight." (Conan O'Brien on the 2010-11-08 premiere of <em>Conan</em>)
|
||||
</li>
|
||||
<li>
|
||||
"The best method, I told folks, was to hang a large clock high on a
|
||||
|
|
@ -616,7 +567,7 @@ barn wall where all the cows could see it. If you have Holsteins, you
|
|||
will need to use an analog clock." (Jerry Nelson, <a
|
||||
href="http://www.agriculture.com/family/farm-humor/how-to-adjust-dairy-cows-to-daylight-savings-time">How
|
||||
to adjust dairy cows to daylight saving time</a>", <em>Successful Farming</em>,
|
||||
2017-10-09.)
|
||||
2017-10-09)
|
||||
</li>
|
||||
<li>
|
||||
"And now, driving to California, I find that I must enter a password
|
||||
|
|
|
|||
|
|
@ -114,7 +114,7 @@ Indiana, which switched from central to eastern time in 1991
|
|||
and switched back in 2006.
|
||||
To use the database on an extended <a
|
||||
href="https://en.wikipedia.org/wiki/POSIX"><abbr
|
||||
title="Portable Operating System Interface">POSIX</abbr></a>
|
||||
title="Portable Operating System Interface">POSIX</abbr>.1-2017</a>
|
||||
implementation set the <code><abbr>TZ</abbr></code>
|
||||
environment variable to the location's full name,
|
||||
e.g., <code><abbr>TZ</abbr>="America/New_York"</code>.</p>
|
||||
|
|
@ -172,7 +172,7 @@ Since version 2022a, each release has been distributed in
|
|||
ustar interchange format</a>, compressed as described above;
|
||||
older releases use a nearly compatible format.
|
||||
Since version 2016h, each release has contained a text file named
|
||||
"<samp>version</samp>" whose first (and currently only) line is the version.
|
||||
"<code>version</code>" whose first (and currently only) line is the version.
|
||||
Older releases are <a href="https://ftp.iana.org/tz/releases/">archived</a>,
|
||||
and are also available in an
|
||||
<a href="ftp://ftp.iana.org/tz/releases/"><abbr
|
||||
|
|
@ -362,9 +362,6 @@ lets you see the <code><abbr>TZ</abbr></code> values directly.</li>
|
|||
<li><a
|
||||
href="https://www.convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP">Current
|
||||
Time in 1000 Places</a> uses descriptions of the values.</li>
|
||||
<li><a href="https://home.kpn.nl/vanadovv/time/TZworld.html">Complete
|
||||
timezone information for all countries</a>
|
||||
displays tables of <abbr>DST</abbr> rules.
|
||||
<li><a href="https://www.timeanddate.com/worldclock/">The World Clock –
|
||||
Worldwide</a> lets you sort zone names and convert times.</li>
|
||||
<li><a href="https://24timezones.com">24TimeZones</a> has a world
|
||||
|
|
@ -511,12 +508,12 @@ It is freely available under the Apache License.</li>
|
|||
<li>Many modern
|
||||
<a href="https://en.wikipedia.org/wiki/JavaScript">JavaScript</a>
|
||||
runtimes support <code><abbr>tz</abbr></code> natively via the
|
||||
<samp>timeZone</samp> option of <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat"><samp>Intl.DateTimeFormat</samp></a>.
|
||||
<code>timeZone</code> option of <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/DateTimeFormat"><code>Intl.DateTimeFormat</code></a>.
|
||||
This can be used as-is or with most of the following libraries,
|
||||
many of which also support runtimes lacking the <samp>timeZone</samp> option.
|
||||
many of which also support runtimes lacking the <code>timeZone</code> option.
|
||||
<ul>
|
||||
<li>The <a
|
||||
href="https://github.com/formatjs/date-time-format-timezone"><samp>Intl.DateTimeFormat</samp>
|
||||
href="https://github.com/formatjs/date-time-format-timezone"><code>Intl.DateTimeFormat</code>
|
||||
timezone polyfill</a>
|
||||
is freely available under a <abbr>BSD</abbr>-style license.</li>
|
||||
<li>The <a href="https://date-fns.org/">date-fns</a>
|
||||
|
|
@ -529,7 +526,7 @@ the <a href="https://momentjs.com/docs/">now-legacy Moment.js</a> date
|
|||
manipulation library.
|
||||
It is freely available under the <abbr>MIT</abbr> license.</li>
|
||||
<li><a href="https://moment.github.io/luxon/">Luxon</a> improves
|
||||
timezone support for the <samp>Intl</samp> API.
|
||||
timezone support for the <code>Intl</code> API.
|
||||
It is freely available under the <abbr>MIT</abbr> license.</li>
|
||||
<li><a href="https://momentjs.com/timezone/">Moment Timezone</a> is a
|
||||
Moment.js plugin.
|
||||
|
|
@ -550,11 +547,11 @@ convert timestamps, view transition histories, and download code and data.
|
|||
It is freely available under the <abbr>MIT</abbr> license.</li>
|
||||
</ul>
|
||||
The proposed <a
|
||||
href="https://github.com/tc39/proposal-temporal"><samp>Temporal</samp>
|
||||
href="https://github.com/tc39/proposal-temporal"><code>Temporal</code>
|
||||
objects</a> let programs access an abstract view of
|
||||
<code><abbr>tzdb</abbr></code> data, and are designed to replace <a
|
||||
href="https://codeofmatt.com/javascript-date-type-is-horribly-broken/">JavaScript's
|
||||
problematic <samp>Date</samp> objects</a> when working with dates and times.
|
||||
problematic <code>Date</code> objects</a> when working with dates and times.
|
||||
<li><a href="https://github.com/JuliaTime/">JuliaTime</a> contains a
|
||||
compiler from <code><abbr>tz</abbr></code> source into
|
||||
<a href="https://julialang.org/">Julia</a>. It is freely available
|
||||
|
|
@ -620,6 +617,16 @@ the Apache License.</li>
|
|||
library that translates between <abbr>UT</abbr> and civil time and
|
||||
can read <abbr>TZif</abbr> files. It is freely available under the Apache
|
||||
License.</li>
|
||||
<li>The
|
||||
<a href="https://github.com/nayarsystems/posix_tz_db"><code>posix_tz_db</code>
|
||||
package</a> contains Python code
|
||||
to generate <abbr>CSV</abbr> and <abbr>JSON</abbr> tables that map
|
||||
<code><abbr>tz</abbr></code> settings to POSIX.1-2017-like approximations.
|
||||
For example, it maps <code>"Africa/Cairo"</code>
|
||||
to <code>"EET-2EEST,M4.5.5/0,M10.5.4/24"</code>,
|
||||
an approximation valid for Cairo timestamps from 2023 on.
|
||||
This can help porting to platforms that support only POSIX.1-2017.
|
||||
The package is freely available under the MIT license.</li>
|
||||
<li><a href="https://github.com/derickr/timelib">Timelib</a> is a C
|
||||
library that reads <abbr>TZif</abbr> files and converts
|
||||
timestamps from one time zone or format to another.
|
||||
|
|
@ -666,9 +673,7 @@ available under a <abbr>BSD</abbr>-style license.</li>
|
|||
<ul>
|
||||
<li><a href="https://foxclocks.org">FoxClocks</a>
|
||||
is an extension for <a href="https://www.google.com/chrome/">Google
|
||||
Chrome</a> and for <a
|
||||
href="https://wiki.mozilla.org/Modules/Toolkit">Mozilla
|
||||
Toolkit</a> applications like <a
|
||||
Chrome</a>, <a
|
||||
href="https://www.mozilla.org/en-US/firefox/new/">Firefox</a> and <a
|
||||
href="https://www.mozilla.org/en-US/thunderbird/">Thunderbird</a>.
|
||||
It displays multiple clocks in the application window, and has a mapping
|
||||
|
|
@ -782,32 +787,9 @@ boundaries of <code><abbr>tzdb</abbr></code> timezones.
|
|||
Its code is freely available under the <abbr>MIT</abbr> license, and
|
||||
its data entries are freely available under the
|
||||
<a href="https://opendatacommons.org/licenses/odbl/">Open Data Commons
|
||||
Open Database License</a>. The maps' borders appear to be quite accurate.</li>
|
||||
<li>Programmatic interfaces that map geographical coordinates via tz_world to
|
||||
<code><abbr>tzdb</abbr></code> timezones include:
|
||||
<ul>
|
||||
<li><a href="https://github.com/mj1856/GeoTimeZone">GeoTimeZone</a> is
|
||||
written in <a
|
||||
href="https://en.wikipedia.org/wiki/C_Sharp_(programming_language)">C#</a>
|
||||
and is freely available under the <abbr>MIT</abbr> license.</li>
|
||||
<li>The <a href="https://github.com/bradfitz/latlong">latlong package</a>
|
||||
is written in Go and is freely available under the Apache License.</li>
|
||||
<li><a href="https://github.com/drtimcooper/LatLongToTimezone">LatLongToTimezone</a>,
|
||||
in both Java and
|
||||
<a href="https://en.wikipedia.org/wiki/Swift_(programming_language)">Swift</a>
|
||||
form, is freely available under the MIT license.</li>
|
||||
<li>For Node.js,
|
||||
the <a href="https://www.npmjs.com/package/geo-tz">geo-tz module</a>
|
||||
is freely available under the MIT license, and
|
||||
the <a href="https://www.npmjs.com/package/tz-lookup">tz-lookup module</a>
|
||||
is in the public domain.</li>
|
||||
<li>The <a
|
||||
href="https://github.com/MrMinimal64/timezonefinder">timezonefinder</a>
|
||||
library for Python is freely available under the MIT license.
|
||||
<li>The <a
|
||||
href="https://github.com/gunyarakun/timezone_finder">timezone_finder</a>
|
||||
library for Ruby is freely available under the MIT license.</li>
|
||||
</ul></li>
|
||||
Open Database License</a>. The borders appear to be quite accurate.
|
||||
Its main web page lists more than twenty libraries
|
||||
for looking up a timezone name from a GPS coordinate.</li>
|
||||
<li>Free access via a network API, if you register a key, is provided by
|
||||
the <a
|
||||
href="https://www.geonames.org/export/web-services.html#timezone">GeoNames
|
||||
|
|
@ -826,12 +808,9 @@ coordinates?</a>" discusses other geolocation possibilities.</li>
|
|||
<li><a href="http://statoids.com/statoids.html">Administrative
|
||||
Divisions of Countries ("Statoids")</a> lists
|
||||
political subdivision data related to time zones.</li>
|
||||
<li><a href="https://home.kpn.nl/vanadovv/time/Multizones.html">Time
|
||||
zone boundaries for multizone countries</a> summarizes legal
|
||||
boundaries between time zones within countries.</li>
|
||||
<li><a href="https://manifold.net/info/freestuff.shtml">Manifold Software
|
||||
– GIS and Database Tools</a> includes a Manifold-format map of
|
||||
world time zone boundaries distributed under the
|
||||
world time zone boundaries circa 2007, distributed under the
|
||||
<abbr>GPL</abbr>.</li>
|
||||
<li>A ship within the <a
|
||||
href="https://en.wikipedia.org/wiki/Territorial_waters">territorial
|
||||
|
|
@ -862,7 +841,7 @@ Lords</a> discusses how authoritarians manipulate civil time.</li>
|
|||
<li><a href="https://www.w3.org/TR/timezone/">Working with Time Zones</a>
|
||||
contains guidelines and best practices for software applications that
|
||||
deal with civil time.</li>
|
||||
<li><a href="https://www.staff.science.uu.nl/~gent0113/idl/idl.htm">A History of
|
||||
<li><a href="https://webspace.science.uu.nl/~gent0113/idl/idl.htm">A History of
|
||||
the International Date Line</a> tells the story of the most important
|
||||
time zone boundary.</li>
|
||||
<li><a href="http://statoids.com/tconcept.html">Basic Time
|
||||
|
|
@ -875,7 +854,7 @@ Zone Concepts</a> discusses terminological issues behind time zones.</li>
|
|||
<dl>
|
||||
<dt>Australia</dt>
|
||||
<dd>The Parliamentary Library commissioned a <a
|
||||
href="https://www.aph.gov.au/binaries/library/pubs/rp/2009-10/10rp10.pdf">research
|
||||
href="https://parlinfo.aph.gov.au/parlInfo/download/library/prspub/359V6/upload_binary/359v60.pdf">research
|
||||
paper on daylight saving time in Australia</a>.
|
||||
The Bureau of Meteorology publishes a list of <a
|
||||
href="http://www.bom.gov.au/climate/averages/tables/dst_times.shtml">Implementation
|
||||
|
|
@ -883,9 +862,9 @@ Dates of Daylight Savings Time within Australia</a>.</dd>
|
|||
<dt>Belgium</dt>
|
||||
<dd>The Royal Observatory of Belgium maintains a table of time in
|
||||
Belgium (in
|
||||
<a href="https://www.astro.oma.be/GENERAL/INFO/nli001a.html"
|
||||
<a href="https://robinfo.oma.be/nl/astro-info/tijd/"
|
||||
hreflang="nl">Dutch</a> and <a
|
||||
href="https://www.astro.oma.be/GENERAL/INFO/fri001a.html"
|
||||
href="https://robinfo.oma.be/fr/astro-info/heure/"
|
||||
hreflang="fr">French</a>).</dd>
|
||||
<dt>Brazil</dt>
|
||||
<dd>The Time Service Department of the National Observatory
|
||||
|
|
@ -929,7 +908,7 @@ Congress has published a <a
|
|||
href="https://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.htm"
|
||||
hreflang="es">history of Mexican local time (in Spanish)</a>.</dd>
|
||||
<dt>Netherlands</dt>
|
||||
<dd><a href="https://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm"
|
||||
<dd><a href="https://webspace.science.uu.nl/~gent0113/wettijd/wettijd.htm"
|
||||
hreflang="nl">Legal time in the Netherlands (in Dutch)</a>
|
||||
covers the history of local time in the Netherlands from ancient times.</dd>
|
||||
<dt>New Zealand</dt>
|
||||
|
|
@ -938,7 +917,7 @@ href="https://www.dia.govt.nz/Daylight-Saving-History">History of
|
|||
Daylight Saving</a>.</dd>
|
||||
<dt>Palestine</dt>
|
||||
<dd>The Ministry of Telecom and IT publishes a <a
|
||||
href="https://mtit.pna.ps/Site/TimeZoon"
|
||||
href="https://mtit.pna.ps/home/TimeZone"
|
||||
hreflang="ar">history of clock changes (in Arabic)</a>.</dd>
|
||||
<dt>Portugal</dt>
|
||||
<dd>The Lisbon Astronomical Observatory publishes a
|
||||
|
|
@ -973,6 +952,9 @@ zone shifts, and many scientific studies have been conducted. This
|
|||
section summarizes reviews and position statements based on
|
||||
scientific literature in the area.</p>
|
||||
<ul>
|
||||
<li>In 2022 the American Medical Association issued a
|
||||
<a href="https://www.ama-assn.org/press-center/press-releases/ama-calls-permanent-standard-time">statement
|
||||
supporting permanent standard time</a> on health grounds.</li>
|
||||
<li>Carey RN, Sarma KM.
|
||||
<a href="https://bmjopen.bmj.com/content/7/6/e014319.long">Impact of
|
||||
daylight saving time on road traffic collision risk: a systematic
|
||||
|
|
@ -983,25 +965,36 @@ neither supports nor refutes road safety benefits from
|
|||
shifts in time zones.</li>
|
||||
<li>Havranek T, Herman D, Irsova D.
|
||||
<a href="https://www.iaee.org/en/publications/ejarticle.aspx?id=3051">Does
|
||||
daylight saving save electricity? A meta-analysis.</a>
|
||||
daylight saving save electricity? A meta-analysis</a>.
|
||||
<em>Energy J.</em> 2018;39(2):35–61.
|
||||
doi:<a href="https://doi.org/10.5547/01956574.39.2.thav">10.5547/01956574.39.2.thav</a>.
|
||||
This analyzes research literature and concludes, "Electricity savings
|
||||
are larger for countries farther away from the equator, while
|
||||
subtropical regions consume more electricity because of <abbr>DST</abbr>."</li>
|
||||
<li>Rishi MA, Ahmed O, Barrantes Perez JH <em>et al</em>.
|
||||
<a href="https://jcsm.aasm.org/doi/10.5664/jcsm.8780">Daylight saving time:
|
||||
<li>Malow BA. <a
|
||||
href="https://academic.oup.com/sleep/article/45/12/zsac236/6717940">It is time
|
||||
to abolish the clock change and adopt permanent
|
||||
standard time in the United States:
|
||||
a Sleep Research Society position statement</a>.
|
||||
<em>Sleep.</em> 2022;45(12):zsac236.
|
||||
doi:<a href="https://doi.org/10.1093/sleep/zsac236">10.1093/sleep/zsac236</a>.
|
||||
After reviewing the scientific literature, the Sleep Research Society
|
||||
advocates permanent standard time due to its health benefits.
|
||||
<li>Rishi MA, Cheng JY, Strang AR <em>et al</em>.
|
||||
<a href="https://jcsm.aasm.org/doi/10.5664/jcsm.10898">Permanent standard time
|
||||
is the optimal choice for health and safety:
|
||||
an American Academy of Sleep Medicine position statement</a>.
|
||||
<em>J Clin Sleep Med.</em>
|
||||
2020;<a href="https://doi.org/10.5664/jcsm.8780">10.5664/jcsm.8780</a>.
|
||||
This argues for permanent standard time due to health risks of both
|
||||
<abbr>DST</abbr> transitions and permanent <abbr>DST</abbr>.</li>
|
||||
<em>J Clin Sleep Med.</em> 2024;20(1):121–125.
|
||||
doi:<a href="https://doi.org/10.5664/jcsm.10898">10.5664/jcsm.10898</a>.
|
||||
The AASM argues for permanent standard time due to health and safety risks
|
||||
and economic costs of both <abbr>DST</abbr> transitions and
|
||||
permanent <abbr>DST</abbr>.</li>
|
||||
<li>Roenneberg T, Wirz-Justice A, Skene DJ <em>et al</em>.
|
||||
<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7205184/">Why
|
||||
<a href="https://journals.sagepub.com/doi/10.1177/0748730419854197">Why
|
||||
should we abolish Daylight Saving Time?</a>
|
||||
<em>J Biol Rhythms</em>. 2019;34(3):227–230.
|
||||
<em>J Biol Rhythms.</em> 2019;34(3):227–230.
|
||||
doi:<a href="https://doi.org/10.1177/0748730419854197">10.1177/0748730419854197</a>.
|
||||
This position paper of the Society for Research on Biological Rhythms
|
||||
The Society for Research on Biological Rhythms
|
||||
opposes DST changes and permanent DST, and advocates that governments adopt
|
||||
"permanent Standard Time for the health and safety of their citizens".</li>
|
||||
</ul>
|
||||
|
|
@ -1117,9 +1110,12 @@ might be redefined
|
|||
without Leap Seconds</a> gives pointers on this
|
||||
contentious issue.
|
||||
The General Conference on Weights and Measures
|
||||
<a href="https://www.bipm.org/en/cgpm-2022/resolution-4">voted in 2022</a>
|
||||
<a href="https://www.bipm.org/en/cgpm-2022/resolution-4">decided in 2022</a>
|
||||
to discontinue the use of leap seconds by 2035, replacing them with an
|
||||
as-yet-undetermined scheme some time after the year 2135.
|
||||
The World Radiocommunication Conference <a
|
||||
href="https://www.itu.int/dms_pub/itu-r/opb/act/R-ACT-WRC.15-2023-PDF-E.pdf">resolved
|
||||
in 2023</a> to cooperate with this process.
|
||||
</li>
|
||||
</ul>
|
||||
</section>
|
||||
|
|
|
|||
6
contrib/tzcode/tzdir.h
Normal file
6
contrib/tzcode/tzdir.h
Normal file
|
|
@ -0,0 +1,6 @@
|
|||
#ifndef TZDEFAULT
|
||||
# define TZDEFAULT "/etc/localtime" /* default zone */
|
||||
#endif
|
||||
#ifndef TZDIR
|
||||
# define TZDIR "/usr/share/zoneinfo" /* TZif directory */
|
||||
#endif
|
||||
|
|
@ -74,7 +74,7 @@ described in the file is associated with the time period
|
|||
starting with the same-indexed transition time
|
||||
and continuing up to but not including the next transition time.
|
||||
(The last time type is present only for consistency checking with the
|
||||
POSIX-style TZ string described below.)
|
||||
POSIX.1-2017-style TZ string described below.)
|
||||
These values serve as indices into the next field.
|
||||
.It Va tzh_typecnt
|
||||
.Vt ttinfo
|
||||
|
|
@ -166,7 +166,8 @@ must also be set.
|
|||
.Pp
|
||||
The standard/wall and UT/local indicators were designed for
|
||||
transforming a TZif file's transition times into transitions appropriate
|
||||
for another time zone specified via a POSIX-style TZ string that lacks rules.
|
||||
for another time zone specified via
|
||||
a POSIX.1-2017-style TZ string that lacks rules.
|
||||
For example, when TZ="EET\*-2EEST" and there is no TZif file "EET\*-2EEST",
|
||||
the idea was to adapt the transition times from a TZif file with the
|
||||
well-known name "posixrules" that is present only for this purpose and
|
||||
|
|
@ -195,13 +196,14 @@ the above header and data are followed by a second header and data,
|
|||
identical in format except that
|
||||
eight bytes are used for each transition time or leap second time.
|
||||
(Leap second counts remain four bytes.)
|
||||
After the second header and data comes a newline-enclosed,
|
||||
POSIX-TZ-environment-variable-style string for use in handling instants
|
||||
After the second header and data comes a newline-enclosed string
|
||||
in the style of the contents of a POSIX.1-2017 TZ environment variable,
|
||||
for use in handling instants
|
||||
after the last transition time stored in the file
|
||||
or for all instants if the file has no transitions.
|
||||
The POSIX-style TZ string is empty (i.e., nothing between the newlines)
|
||||
if there is no POSIX-style representation for such instants.
|
||||
If nonempty, the POSIX-style TZ string must agree with the local time
|
||||
The TZ string is empty (i.e., nothing between the newlines)
|
||||
if there is no POSIX.1-2017-style representation for such instants.
|
||||
If nonempty, the TZ string must agree with the local time
|
||||
type after the last transition time if present in the eight-byte data;
|
||||
for example, given the string
|
||||
.Dq "WET0WEST,M3.5.0/1,M10.5.0"
|
||||
|
|
@ -213,8 +215,8 @@ Also, if there is at least one transition, time type 0 is associated
|
|||
with the time period from the indefinite past up to but not including
|
||||
the earliest transition time.
|
||||
.Ss Version 3 format
|
||||
For version-3-format timezone files, the POSIX-TZ-style string may
|
||||
use two minor extensions to the POSIX TZ format, as described in
|
||||
For version-3-format timezone files, the TZ string may
|
||||
use two minor extensions to the POSIX.1-2017 TZ format, as described in
|
||||
.Xr newtzset 3 .
|
||||
First, the hours part of its transition times may be signed and range from
|
||||
\-167 through 167 instead of the POSIX-required unsigned values
|
||||
|
|
@ -334,7 +336,7 @@ version 2+ data even if the reader's native timestamps have only
|
|||
.It
|
||||
Some readers designed for version 2 might mishandle
|
||||
timestamps after a version 3 or higher file's last transition, because
|
||||
they cannot parse extensions to POSIX in the TZ-like string.
|
||||
they cannot parse extensions to POSIX.1-2017 in the TZ-like string.
|
||||
As a partial workaround, a writer can output more transitions
|
||||
than necessary, so that only far-future timestamps are
|
||||
mishandled by version 2 readers.
|
||||
|
|
@ -385,7 +387,7 @@ Some readers mishandle a transition if its timestamp has
|
|||
the minimum possible signed 64-bit value.
|
||||
Timestamps less than \-2**59 are not recommended.
|
||||
.It
|
||||
Some readers mishandle POSIX-style TZ strings that
|
||||
Some readers mishandle TZ strings that
|
||||
contain
|
||||
.Dq "<"
|
||||
or
|
||||
|
|
@ -413,13 +415,13 @@ Some readers mishandle TZif files that specify
|
|||
daylight-saving time UT offsets that are less than the UT
|
||||
offsets for the corresponding standard time.
|
||||
These readers do not support locations like Ireland, which
|
||||
uses the equivalent of the POSIX TZ string
|
||||
.Dq "IST\*-1GMT0,M10.5.0,M3.5.0/1" ,
|
||||
uses the equivalent of the TZ string
|
||||
.Dq "IST\*-1GMT0,M10.5.0,M3.5.0/1",
|
||||
observing standard time
|
||||
(IST, +01) in summer and daylight saving time (GMT, +00) in winter.
|
||||
As a partial workaround, a writer can output data for the
|
||||
equivalent of the POSIX TZ string
|
||||
.Dq "GMT0IST,M3.5.0/1,M10.5.0" ,
|
||||
equivalent of the TZ string
|
||||
.Dq "GMT0IST,M3.5.0/1,M10.5.0",
|
||||
thus swapping standard and daylight saving time.
|
||||
Although this workaround misidentifies which part of the year
|
||||
uses daylight saving time, it records UT offsets and time zone
|
||||
|
|
|
|||
|
|
@ -23,14 +23,6 @@
|
|||
** Information about time zone files.
|
||||
*/
|
||||
|
||||
#ifndef TZDIR
|
||||
# define TZDIR "/usr/share/zoneinfo" /* Time zone object file directory */
|
||||
#endif /* !defined TZDIR */
|
||||
|
||||
#ifndef TZDEFAULT
|
||||
# define TZDEFAULT "/etc/localtime"
|
||||
#endif /* !defined TZDEFAULT */
|
||||
|
||||
#ifndef TZDEFRULES
|
||||
# define TZDEFRULES "posixrules"
|
||||
#endif /* !defined TZDEFRULES */
|
||||
|
|
@ -88,11 +80,11 @@ struct tzhead {
|
|||
** time uses 8 rather than 4 chars,
|
||||
** then a POSIX-TZ-environment-variable-style string for use in handling
|
||||
** instants after the last transition time stored in the file
|
||||
** (with nothing between the newlines if there is no POSIX representation for
|
||||
** such instants).
|
||||
** (with nothing between the newlines if there is no POSIX.1-2017
|
||||
** representation for such instants).
|
||||
**
|
||||
** If tz_version is '3' or greater, the above is extended as follows.
|
||||
** First, the POSIX TZ string's hour offset may range from -167
|
||||
** First, the TZ string's hour offset may range from -167
|
||||
** through 167 as compared to the POSIX-required 0 through 24.
|
||||
** Second, its DST start time may be January 1 at 00:00 and its stop
|
||||
** time December 31 at 24:00 plus the difference between DST and
|
||||
|
|
|
|||
|
|
@ -95,7 +95,7 @@ Output version information and exit.
|
|||
.SH "ENVIRONMENT VARIABLES"
|
||||
.TP
|
||||
\f3AWK\fP
|
||||
Name of a Posix-compliant
|
||||
Name of a POSIX-compliant
|
||||
.B awk
|
||||
program (default:
|
||||
.BR awk ).
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -1 +1 @@
|
|||
2023c
|
||||
2024a
|
||||
|
|
|
|||
|
|
@ -604,7 +604,7 @@ main(int argc, char *argv[])
|
|||
if (!tz) {
|
||||
char const *e = strerror(errno);
|
||||
fprintf(stderr, _("%s: unknown timezone '%s': %s\n"),
|
||||
progname, argv[1], e);
|
||||
progname, argv[i], e);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
if (now) {
|
||||
|
|
|
|||
|
|
@ -109,6 +109,12 @@ will act as if the input contained a link line of the form
|
|||
Link \fItimezone\fP posixrules
|
||||
.Ed
|
||||
.Pp
|
||||
If
|
||||
.Ar timezone
|
||||
is
|
||||
.Dq "\*-"
|
||||
(the default), any already-existing link is removed.
|
||||
.Pp
|
||||
Unless
|
||||
.Ar timezone
|
||||
is
|
||||
|
|
@ -120,12 +126,6 @@ and it should not be combined with
|
|||
if
|
||||
.Ar timezone 's
|
||||
transitions are at standard time or Universal Time (UT) instead of local time.
|
||||
.Pp
|
||||
If
|
||||
.Ar timezone
|
||||
is
|
||||
.Ql - ,
|
||||
any already-existing link is removed.
|
||||
.It Fl r Oo @ Ns Ar lo Oc Ns Oo /@ Ns Ar hi Oc
|
||||
Limit the applicability of output files
|
||||
to timestamps in the range from
|
||||
|
|
@ -156,7 +156,7 @@ causes a TZif file to contain explicit entries for
|
|||
.Em pre-
|
||||
.Ar hi
|
||||
transitions rather than concisely representing them
|
||||
with an extended POSIX TZ string.
|
||||
with an extended POSIX.1-2017 TZ string.
|
||||
Also see the
|
||||
.Fl b Cm slim
|
||||
option for another way to shrink output size.
|
||||
|
|
@ -165,10 +165,10 @@ Generate redundant trailing explicit transitions for timestamps
|
|||
that occur less than
|
||||
.Ar hi
|
||||
seconds since the Epoch, even though the transitions could be
|
||||
more concisely represented via the extended POSIX TZ string.
|
||||
more concisely represented via the extended POSIX.1-2017 TZ string.
|
||||
This option does not affect the represented timestamps.
|
||||
Although it accommodates nonstandard TZif readers
|
||||
that ignore the extended POSIX TZ string,
|
||||
that ignore the extended POSIX.1-2017 TZ string,
|
||||
it increases the size of the altered output files.
|
||||
.It Fl t Ar file
|
||||
When creating local time information, put the configuration link in
|
||||
|
|
@ -227,11 +227,11 @@ for
|
|||
.It
|
||||
The output file does not contain all the information about the
|
||||
long-term future of a timezone, because the future cannot be summarized as
|
||||
an extended POSIX TZ string.
|
||||
an extended POSIX.1-2017 TZ string.
|
||||
For example, as of 2023 this problem
|
||||
occurs for Morocco's daylight-saving rules, as these rules are based
|
||||
on predictions for when Ramadan will be observed, something that
|
||||
an extended POSIX TZ string cannot represent.
|
||||
an extended POSIX.1-2017 TZ string cannot represent.
|
||||
.It
|
||||
The output contains data that may not be handled properly by client
|
||||
code designed for older
|
||||
|
|
@ -341,23 +341,14 @@ an unquoted name should not contain characters from the set
|
|||
Gives the first year in which the rule applies.
|
||||
Any signed integer year can be supplied; the proleptic Gregorian calendar
|
||||
is assumed, with year 0 preceding year 1.
|
||||
The word
|
||||
.Cm minimum
|
||||
(or an abbreviation) means the indefinite past.
|
||||
The word
|
||||
.Cm maximum
|
||||
(or an abbreviation) means the indefinite future.
|
||||
Rules can describe times that are not representable as time values,
|
||||
with the unrepresentable times ignored; this allows rules to be portable
|
||||
among hosts with differing time value types.
|
||||
.It TO
|
||||
Gives the final year in which the rule applies.
|
||||
In addition to
|
||||
.Cm minimum
|
||||
and
|
||||
The word
|
||||
.Cm maximum
|
||||
(as above),
|
||||
the word
|
||||
(or an abbreviation) means the indefinite future, and the word
|
||||
.Cm only
|
||||
(or an abbreviation)
|
||||
may be used to repeat the value of the
|
||||
|
|
|
|||
|
|
@ -14,6 +14,7 @@
|
|||
|
||||
#include "version.h"
|
||||
#include "private.h"
|
||||
#include "tzdir.h"
|
||||
#include "tzfile.h"
|
||||
|
||||
#include <fcntl.h>
|
||||
|
|
@ -34,6 +35,9 @@ static zic_t const
|
|||
# define ZIC_MAX_ABBR_LEN_WO_WARN 6
|
||||
#endif /* !defined ZIC_MAX_ABBR_LEN_WO_WARN */
|
||||
|
||||
/* Minimum and maximum years, assuming signed 32-bit time_t. */
|
||||
enum { YEAR_32BIT_MIN = 1901, YEAR_32BIT_MAX = 2038 };
|
||||
|
||||
/* An upper bound on how much a format might grow due to concatenation. */
|
||||
enum { FORMAT_LEN_GROWTH_BOUND = 5 };
|
||||
|
||||
|
|
@ -92,7 +96,6 @@ struct rule {
|
|||
|
||||
zic_t r_loyear; /* for example, 1986 */
|
||||
zic_t r_hiyear; /* for example, 1986 */
|
||||
bool r_lowasnum;
|
||||
bool r_hiwasnum;
|
||||
|
||||
int r_month; /* 0..11 */
|
||||
|
|
@ -164,13 +167,8 @@ symlink(char const *target, char const *linkname)
|
|||
}
|
||||
#endif
|
||||
#ifndef AT_SYMLINK_FOLLOW
|
||||
# if HAVE_LINK
|
||||
# define linkat(targetdir, target, linknamedir, linkname, flag) \
|
||||
(itssymlink(target) ? (errno = ENOTSUP, -1) : link(target, linkname))
|
||||
# else
|
||||
# define linkat(targetdir, target, linknamedir, linkname, flag) \
|
||||
(errno = ENOTSUP, -1)
|
||||
# endif
|
||||
#endif
|
||||
|
||||
static void addtt(zic_t starttime, int type);
|
||||
|
|
@ -190,7 +188,7 @@ static void inrule(char ** fields, int nfields);
|
|||
static bool inzcont(char ** fields, int nfields);
|
||||
static bool inzone(char ** fields, int nfields);
|
||||
static bool inzsub(char **, int, bool);
|
||||
static bool itssymlink(char const *);
|
||||
static int itssymlink(char const *, int *);
|
||||
static bool is_alpha(char a);
|
||||
static char lowerit(char);
|
||||
static void mkdirs(char const *, bool);
|
||||
|
|
@ -334,7 +332,7 @@ enum {
|
|||
*/
|
||||
|
||||
enum {
|
||||
YR_MINIMUM,
|
||||
YR_MINIMUM, /* "minimum" is for backward compatibility only */
|
||||
YR_MAXIMUM,
|
||||
YR_ONLY
|
||||
};
|
||||
|
|
@ -418,12 +416,10 @@ static struct lookup const lasts[] = {
|
|||
|
||||
static struct lookup const begin_years[] = {
|
||||
{ "minimum", YR_MINIMUM },
|
||||
{ "maximum", YR_MAXIMUM },
|
||||
{ NULL, 0 }
|
||||
};
|
||||
|
||||
static struct lookup const end_years[] = {
|
||||
{ "minimum", YR_MINIMUM },
|
||||
{ "maximum", YR_MAXIMUM },
|
||||
{ "only", YR_ONLY },
|
||||
{ NULL, 0 }
|
||||
|
|
@ -903,7 +899,8 @@ static zic_t const max_time = MAXVAL(zic_t, TIME_T_BITS_IN_FILE);
|
|||
static zic_t lo_time = MINVAL(zic_t, TIME_T_BITS_IN_FILE);
|
||||
static zic_t hi_time = MAXVAL(zic_t, TIME_T_BITS_IN_FILE);
|
||||
|
||||
/* The time specified by the -R option, defaulting to MIN_TIME. */
|
||||
/* The time specified by the -R option, defaulting to MIN_TIME;
|
||||
or lo_time, whichever is greater. */
|
||||
static zic_t redundant_time = MINVAL(zic_t, TIME_T_BITS_IN_FILE);
|
||||
|
||||
/* The time specified by an Expires line, or negative if no such line. */
|
||||
|
|
@ -1036,7 +1033,8 @@ main(int argc, char **argv)
|
|||
directory = optarg;
|
||||
else {
|
||||
fprintf(stderr,
|
||||
_("%s: More than one -d option specified\n"),
|
||||
_("%s: More than one -d option"
|
||||
" specified\n"),
|
||||
progname);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
|
@ -1049,7 +1047,8 @@ _("%s: More than one -d option specified\n"),
|
|||
lcltime = optarg;
|
||||
else {
|
||||
fprintf(stderr,
|
||||
_("%s: More than one -l option specified\n"),
|
||||
_("%s: More than one -l option"
|
||||
" specified\n"),
|
||||
progname);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
|
@ -1071,7 +1070,8 @@ _("invalid file mode"));
|
|||
psxrules = optarg;
|
||||
else {
|
||||
fprintf(stderr,
|
||||
_("%s: More than one -p option specified\n"),
|
||||
_("%s: More than one -p option"
|
||||
" specified\n"),
|
||||
progname);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
|
@ -1097,7 +1097,8 @@ _("%s: More than one -p option specified\n"),
|
|||
leapsec = optarg;
|
||||
else {
|
||||
fprintf(stderr,
|
||||
_("%s: More than one -L option specified\n"),
|
||||
_("%s: More than one -L option"
|
||||
" specified\n"),
|
||||
progname);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
|
@ -1108,13 +1109,14 @@ _("%s: More than one -L option specified\n"),
|
|||
case 'r':
|
||||
if (timerange_given) {
|
||||
fprintf(stderr,
|
||||
_("%s: More than one -r option specified\n"),
|
||||
_("%s: More than one -r option"
|
||||
" specified\n"),
|
||||
progname);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
if (! timerange_option(optarg)) {
|
||||
fprintf(stderr,
|
||||
_("%s: invalid time range: %s\n"),
|
||||
_("%s: invalid time range: %s\n"),
|
||||
progname, optarg);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
|
@ -1137,6 +1139,8 @@ _("%s: invalid time range: %s\n"),
|
|||
fprintf(stderr, _("%s: -R time exceeds -r cutoff\n"), progname);
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
if (redundant_time < lo_time)
|
||||
redundant_time = lo_time;
|
||||
if (bloat == 0) {
|
||||
static char const bloat_default[] = ZIC_BLOAT_DEFAULT;
|
||||
if (strcmp(bloat_default, "slim") == 0)
|
||||
|
|
@ -1429,9 +1433,9 @@ rename_dest(char *tempname, char const *name)
|
|||
}
|
||||
}
|
||||
|
||||
/* Create symlink contents suitable for symlinking FROM to TO, as a
|
||||
freshly allocated string. FROM should be a relative file name, and
|
||||
is relative to the global variable DIRECTORY. TO can be either
|
||||
/* Create symlink contents suitable for symlinking TARGET to LINKNAME, as a
|
||||
freshly allocated string. TARGET should be a relative file name, and
|
||||
is relative to the global variable DIRECTORY. LINKNAME can be either
|
||||
relative or absolute. */
|
||||
static char *
|
||||
relname(char const *target, char const *linkname)
|
||||
|
|
@ -1468,6 +1472,18 @@ relname(char const *target, char const *linkname)
|
|||
return result;
|
||||
}
|
||||
|
||||
/* Return true if A and B must have the same parent dir if A and B exist.
|
||||
Return false if this is not necessarily true (though it might be true).
|
||||
Keep it simple, and do not inspect the file system. */
|
||||
static bool
|
||||
same_parent_dirs(char const *a, char const *b)
|
||||
{
|
||||
for (; *a == *b; a++, b++)
|
||||
if (!*a)
|
||||
return true;
|
||||
return ! (strchr(a, '/') || strchr(b, '/'));
|
||||
}
|
||||
|
||||
static void
|
||||
dolink(char const *target, char const *linkname, bool staysymlink)
|
||||
{
|
||||
|
|
@ -1475,6 +1491,7 @@ dolink(char const *target, char const *linkname, bool staysymlink)
|
|||
int link_errno;
|
||||
char *tempname = NULL;
|
||||
char const *outname = linkname;
|
||||
int targetissym = -2, linknameissym = -2;
|
||||
|
||||
check_for_signal();
|
||||
|
||||
|
|
@ -1496,13 +1513,32 @@ dolink(char const *target, char const *linkname, bool staysymlink)
|
|||
break;
|
||||
}
|
||||
link_errno = errno;
|
||||
/* Linux 2.6.16 and 2.6.17 mishandle AT_SYMLINK_FOLLOW. */
|
||||
if (link_errno == EINVAL)
|
||||
link_errno = ENOTSUP;
|
||||
#if HAVE_LINK
|
||||
/* If linkat is not supported, fall back on link(A, B).
|
||||
However, skip this if A is a relative symlink
|
||||
and A and B might not have the same parent directory.
|
||||
On some platforms link(A, B) does not follow a symlink A,
|
||||
and if A is relative it might misbehave elsewhere. */
|
||||
if (link_errno == ENOTSUP
|
||||
&& (same_parent_dirs(target, outname)
|
||||
|| 0 <= itssymlink(target, &targetissym))) {
|
||||
if (link(target, outname) == 0) {
|
||||
link_errno = 0;
|
||||
break;
|
||||
}
|
||||
link_errno = errno;
|
||||
}
|
||||
#endif
|
||||
if (link_errno == EXDEV || link_errno == ENOTSUP)
|
||||
break;
|
||||
|
||||
if (link_errno == EEXIST) {
|
||||
staysymlink &= !tempname;
|
||||
random_dirent(&outname, &tempname);
|
||||
if (staysymlink && itssymlink(linkname))
|
||||
if (staysymlink && itssymlink(linkname, &linknameissym))
|
||||
break;
|
||||
} else if (link_errno == ENOENT && !linkdirs_made) {
|
||||
mkdirs(linkname, true);
|
||||
|
|
@ -1565,12 +1601,17 @@ dolink(char const *target, char const *linkname, bool staysymlink)
|
|||
rename_dest(tempname, linkname);
|
||||
}
|
||||
|
||||
/* Return true if NAME is a symbolic link. */
|
||||
static bool
|
||||
itssymlink(char const *name)
|
||||
/* Return 1 if NAME is an absolute symbolic link, -1 if it is relative,
|
||||
0 if it is not a symbolic link. If *CACHE is not -2, it is the
|
||||
cached result of a previous call to this function with the same NAME. */
|
||||
static int
|
||||
itssymlink(char const *name, int *cache)
|
||||
{
|
||||
char c;
|
||||
return 0 <= readlink(name, &c, 1);
|
||||
if (*cache == -2) {
|
||||
char c = '\0';
|
||||
*cache = readlink(name, &c, 1) < 0 ? 0 : c == '/' ? 1 : -1;
|
||||
}
|
||||
return *cache;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -1883,16 +1924,14 @@ inzone(char **fields, int nfields)
|
|||
return false;
|
||||
}
|
||||
if (lcltime != NULL && strcmp(fields[ZF_NAME], tzdefault) == 0) {
|
||||
error(
|
||||
_("\"Zone %s\" line and -l option are mutually exclusive"),
|
||||
tzdefault);
|
||||
return false;
|
||||
error(_("\"Zone %s\" line and -l option are mutually exclusive"),
|
||||
tzdefault);
|
||||
return false;
|
||||
}
|
||||
if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
|
||||
error(
|
||||
_("\"Zone %s\" line and -p option are mutually exclusive"),
|
||||
TZDEFRULES);
|
||||
return false;
|
||||
error(_("\"Zone %s\" line and -p option are mutually exclusive"),
|
||||
TZDEFRULES);
|
||||
return false;
|
||||
}
|
||||
for (i = 0; i < nzones; ++i)
|
||||
if (zones[i].z_name != NULL &&
|
||||
|
|
@ -1984,10 +2023,9 @@ inzsub(char **fields, int nfields, bool iscont)
|
|||
zones[nzones - 1].z_untiltime > min_time &&
|
||||
zones[nzones - 1].z_untiltime < max_time &&
|
||||
zones[nzones - 1].z_untiltime >= z.z_untiltime) {
|
||||
error(_(
|
||||
"Zone continuation line end time is not after end time of previous line"
|
||||
));
|
||||
return false;
|
||||
error(_("Zone continuation line end time is"
|
||||
" not after end time of previous line"));
|
||||
return false;
|
||||
}
|
||||
}
|
||||
z.z_name = iscont ? NULL : estrdup(fields[ZF_NAME]);
|
||||
|
|
@ -2189,13 +2227,12 @@ rulesub(struct rule *rp, const char *loyearp, const char *hiyearp,
|
|||
*/
|
||||
cp = loyearp;
|
||||
lp = byword(cp, begin_years);
|
||||
rp->r_lowasnum = lp == NULL;
|
||||
if (!rp->r_lowasnum) switch (lp->l_value) {
|
||||
if (lp) switch (lp->l_value) {
|
||||
case YR_MINIMUM:
|
||||
rp->r_loyear = ZIC_MIN;
|
||||
break;
|
||||
case YR_MAXIMUM:
|
||||
rp->r_loyear = ZIC_MAX;
|
||||
warning(_("FROM year \"%s\" is obsolete;"
|
||||
" treated as %d"),
|
||||
cp, YEAR_32BIT_MIN - 1);
|
||||
rp->r_loyear = YEAR_32BIT_MIN - 1;
|
||||
break;
|
||||
default: unreachable();
|
||||
} else if (sscanf(cp, "%"SCNdZIC"%c", &rp->r_loyear, &xs) != 1) {
|
||||
|
|
@ -2206,9 +2243,6 @@ rulesub(struct rule *rp, const char *loyearp, const char *hiyearp,
|
|||
lp = byword(cp, end_years);
|
||||
rp->r_hiwasnum = lp == NULL;
|
||||
if (!rp->r_hiwasnum) switch (lp->l_value) {
|
||||
case YR_MINIMUM:
|
||||
rp->r_hiyear = ZIC_MIN;
|
||||
break;
|
||||
case YR_MAXIMUM:
|
||||
rp->r_hiyear = ZIC_MAX;
|
||||
break;
|
||||
|
|
@ -3000,6 +3034,10 @@ rule_cmp(struct rule const *a, struct rule const *b)
|
|||
return a->r_dayofmonth - b->r_dayofmonth;
|
||||
}
|
||||
|
||||
/* Store into RESULT a POSIX.1-2017 TZ string that represent the future
|
||||
predictions for the zone ZPFIRST with ZONECOUNT entries. Return a
|
||||
compatibility indicator (a TZDB release year) if successful, a
|
||||
negative integer if no such TZ string exissts. */
|
||||
static int
|
||||
stringzone(char *result, struct zone const *zpfirst, ptrdiff_t zonecount)
|
||||
{
|
||||
|
|
@ -3135,11 +3173,11 @@ outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
|
|||
register char * envvar;
|
||||
register int max_abbr_len;
|
||||
register int max_envvar_len;
|
||||
register bool prodstic; /* all rules are min to max */
|
||||
register int compat;
|
||||
register bool do_extend;
|
||||
register char version;
|
||||
ptrdiff_t lastatmax = -1;
|
||||
zic_t nonTZlimtime = ZIC_MIN;
|
||||
int nonTZlimtype = -1;
|
||||
zic_t max_year0;
|
||||
int defaulttype = -1;
|
||||
|
||||
|
|
@ -3160,7 +3198,6 @@ outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
|
|||
timecnt = 0;
|
||||
typecnt = 0;
|
||||
charcnt = 0;
|
||||
prodstic = zonecount == 1;
|
||||
/*
|
||||
** Thanks to Earl Chew
|
||||
** for noting the need to unconditionally initialize startttisstd.
|
||||
|
|
@ -3178,12 +3215,9 @@ outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
|
|||
updateminmax(zp->z_untilrule.r_loyear);
|
||||
for (j = 0; j < zp->z_nrules; ++j) {
|
||||
struct rule *rp = &zp->z_rules[j];
|
||||
if (rp->r_lowasnum)
|
||||
updateminmax(rp->r_loyear);
|
||||
updateminmax(rp->r_loyear);
|
||||
if (rp->r_hiwasnum)
|
||||
updateminmax(rp->r_hiyear);
|
||||
if (rp->r_lowasnum || rp->r_hiwasnum)
|
||||
prodstic = false;
|
||||
}
|
||||
}
|
||||
/*
|
||||
|
|
@ -3195,7 +3229,8 @@ outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
|
|||
if (noise) {
|
||||
if (!*envvar)
|
||||
warning("%s %s",
|
||||
_("no POSIX environment variable for zone"),
|
||||
_("no POSIX.1-2017 environment variable"
|
||||
" for zone"),
|
||||
zpfirst->z_name);
|
||||
else if (compat != 0) {
|
||||
/* Circa-COMPAT clients, and earlier clients, might
|
||||
|
|
@ -3207,37 +3242,12 @@ outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
|
|||
}
|
||||
}
|
||||
if (do_extend) {
|
||||
/*
|
||||
** Search through a couple of extra years past the obvious
|
||||
** 400, to avoid edge cases. For example, suppose a non-POSIX
|
||||
** rule applies from 2012 onwards and has transitions in March
|
||||
** and September, plus some one-off transitions in November
|
||||
** 2013. If zic looked only at the last 400 years, it would
|
||||
** set max_year=2413, with the intent that the 400 years 2014
|
||||
** through 2413 will be repeated. The last transition listed
|
||||
** in the tzfile would be in 2413-09, less than 400 years
|
||||
** after the last one-off transition in 2013-11. Two years
|
||||
** might be overkill, but with the kind of edge cases
|
||||
** available we're not sure that one year would suffice.
|
||||
*/
|
||||
enum { years_of_observations = YEARSPERREPEAT + 2 };
|
||||
|
||||
if (min_year >= ZIC_MIN + years_of_observations)
|
||||
min_year -= years_of_observations;
|
||||
else min_year = ZIC_MIN;
|
||||
if (max_year <= ZIC_MAX - years_of_observations)
|
||||
max_year += years_of_observations;
|
||||
else max_year = ZIC_MAX;
|
||||
/*
|
||||
** Regardless of any of the above,
|
||||
** for a "proDSTic" zone which specifies that its rules
|
||||
** always have and always will be in effect,
|
||||
** we only need one cycle to define the zone.
|
||||
*/
|
||||
if (prodstic) {
|
||||
min_year = 1900;
|
||||
max_year = min_year + years_of_observations;
|
||||
}
|
||||
}
|
||||
max_year = max(max_year, (redundant_time / (SECSPERDAY * DAYSPERNYEAR)
|
||||
+ EPOCH_YEAR + 1));
|
||||
|
|
@ -3245,17 +3255,16 @@ outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
|
|||
if (want_bloat()) {
|
||||
/* For the benefit of older systems,
|
||||
generate data from 1900 through 2038. */
|
||||
if (min_year > 1900)
|
||||
min_year = 1900;
|
||||
if (max_year < 2038)
|
||||
max_year = 2038;
|
||||
if (min_year > YEAR_32BIT_MIN - 1)
|
||||
min_year = YEAR_32BIT_MIN - 1;
|
||||
if (max_year < YEAR_32BIT_MAX)
|
||||
max_year = YEAR_32BIT_MAX;
|
||||
}
|
||||
|
||||
if (min_time < lo_time || hi_time < max_time)
|
||||
unspecifiedtype = addtype(0, "-00", false, false, false);
|
||||
|
||||
for (i = 0; i < zonecount; ++i) {
|
||||
struct rule *prevrp = NULL;
|
||||
/*
|
||||
** A guess that may well be corrected later.
|
||||
*/
|
||||
|
|
@ -3265,8 +3274,6 @@ outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
|
|||
bool useuntil = i < (zonecount - 1);
|
||||
zic_t stdoff = zp->z_stdoff;
|
||||
zic_t startoff = stdoff;
|
||||
zic_t prevktime;
|
||||
INITIALIZE(prevktime);
|
||||
if (useuntil && zp->z_untiltime <= min_time)
|
||||
continue;
|
||||
eat(zp->z_filenum, zp->z_linenum);
|
||||
|
|
@ -3280,6 +3287,10 @@ outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
|
|||
startttisut);
|
||||
if (usestart) {
|
||||
addtt(starttime, type);
|
||||
if (useuntil && nonTZlimtime < starttime) {
|
||||
nonTZlimtime = starttime;
|
||||
nonTZlimtype = type;
|
||||
}
|
||||
usestart = false;
|
||||
} else
|
||||
defaulttype = type;
|
||||
|
|
@ -3407,23 +3418,16 @@ outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
|
|||
doabbr(ab, zp, rp->r_abbrvar,
|
||||
rp->r_isdst, rp->r_save, false);
|
||||
offset = oadd(zp->z_stdoff, rp->r_save);
|
||||
if (!want_bloat() && !useuntil && !do_extend
|
||||
&& prevrp && lo_time <= prevktime
|
||||
&& redundant_time <= ktime
|
||||
&& rp->r_hiyear == ZIC_MAX
|
||||
&& prevrp->r_hiyear == ZIC_MAX)
|
||||
break;
|
||||
type = addtype(offset, ab, rp->r_isdst,
|
||||
rp->r_todisstd, rp->r_todisut);
|
||||
if (defaulttype < 0 && !rp->r_isdst)
|
||||
defaulttype = type;
|
||||
if (rp->r_hiyear == ZIC_MAX
|
||||
&& ! (0 <= lastatmax
|
||||
&& ktime < attypes[lastatmax].at))
|
||||
lastatmax = timecnt;
|
||||
addtt(ktime, type);
|
||||
prevrp = rp;
|
||||
prevktime = ktime;
|
||||
if (nonTZlimtime < ktime
|
||||
&& (useuntil || rp->r_hiyear != ZIC_MAX)) {
|
||||
nonTZlimtime = ktime;
|
||||
nonTZlimtype = type;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -3434,7 +3438,8 @@ outzone(const struct zone *zpfirst, ptrdiff_t zonecount)
|
|||
isdst, save, false);
|
||||
eat(zp->z_filenum, zp->z_linenum);
|
||||
if (*startbuf == '\0')
|
||||
error(_("can't determine time zone abbreviation to use just after until time"));
|
||||
error(_("can't determine time zone abbreviation"
|
||||
" to use just after until time"));
|
||||
else {
|
||||
int type = addtype(startoff, startbuf, isdst,
|
||||
startttisstd, startttisut);
|
||||
|
|
@ -3458,12 +3463,38 @@ error(_("can't determine time zone abbreviation to use just after until time"));
|
|||
}
|
||||
if (defaulttype < 0)
|
||||
defaulttype = 0;
|
||||
if (0 <= lastatmax)
|
||||
attypes[lastatmax].dontmerge = true;
|
||||
if (!do_extend && !want_bloat()) {
|
||||
/* Keep trailing transitions that are no greater than this. */
|
||||
zic_t keep_at_max;
|
||||
|
||||
/* The earliest transition into a time governed by the TZ string. */
|
||||
zic_t TZstarttime = ZIC_MAX;
|
||||
for (i = 0; i < timecnt; i++) {
|
||||
zic_t at = attypes[i].at;
|
||||
if (nonTZlimtime < at && at < TZstarttime)
|
||||
TZstarttime = at;
|
||||
}
|
||||
if (TZstarttime == ZIC_MAX)
|
||||
TZstarttime = nonTZlimtime;
|
||||
|
||||
/* Omit trailing transitions deducible from the TZ string,
|
||||
and not needed for -r or -R. */
|
||||
keep_at_max = max(TZstarttime, redundant_time);
|
||||
for (i = j = 0; i < timecnt; i++)
|
||||
if (attypes[i].at <= keep_at_max) {
|
||||
attypes[j].at = attypes[i].at;
|
||||
attypes[j].dontmerge = (attypes[i].at == TZstarttime
|
||||
&& (nonTZlimtype != attypes[i].type
|
||||
|| strchr(envvar, ',')));
|
||||
attypes[j].type = attypes[i].type;
|
||||
j++;
|
||||
}
|
||||
timecnt = j;
|
||||
}
|
||||
if (do_extend) {
|
||||
/*
|
||||
** If we're extending the explicitly listed observations
|
||||
** for 400 years because we can't fill the POSIX-TZ field,
|
||||
** If we're extending the explicitly listed observations for
|
||||
** 400 years because we can't fill the POSIX.1-2017 TZ field,
|
||||
** check whether we actually ended up explicitly listing
|
||||
** observations through that period. If there aren't any
|
||||
** near the end of the 400-year period, add a redundant
|
||||
|
|
|
|||
|
|
@ -52,7 +52,7 @@ __SCCSID("@(#)sysconf.c 8.2 (Berkeley) 3/20/94");
|
|||
#include "un-namespace.h"
|
||||
|
||||
#include "../stdlib/atexit.h"
|
||||
#include "tzfile.h" /* from ../../../contrib/tzcode/stdtime */
|
||||
#include "tzdir.h" /* from ../../../contrib/tzcode/stdtime */
|
||||
#include "libc_private.h"
|
||||
|
||||
#define _PATH_ZONEINFO TZDIR /* from tzfile.h */
|
||||
|
|
|
|||
|
|
@ -316,7 +316,7 @@ _fmt(const char *format, const struct tm * const t, char *pt,
|
|||
time_t mkt;
|
||||
|
||||
tm = *t;
|
||||
mkt = mktime(&tm);
|
||||
mkt = timeoff(&tm, t->tm_gmtoff);
|
||||
if (TYPE_SIGNED(time_t))
|
||||
(void) sprintf_l(buf, loc, "%ld",
|
||||
(long) mkt);
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user