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302da1a3d3
Lots of new unit-tests increase code coverage. Lots of refactoring, cleanup and simlpification to reduce code size. Fixes for Bug 223564 and 245807 Updates to dirdeps.mk and meta2deps.py
93 lines
3.1 KiB
Makefile
93 lines
3.1 KiB
Makefile
# $NetBSD: varmod-localtime.mk,v 1.5 2020/10/31 20:30:06 rillig Exp $
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#
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# Tests for the :localtime variable modifier, which formats a timestamp
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# using strftime(3) in local time.
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.if ${TZ} != "Europe/Berlin" # see unit-tests/Makefile
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. error
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.endif
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all: mod-localtime
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all: mod-localtime-indirect
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all: parse-errors
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# Test for the default time format, %c. Since the time always varies, it's
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# only possible to check for the general format here. The names of the
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# month and weekday are always in English, independent from the locale.
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# Example: Thu Oct 29 18:56:41 2020
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.if ${:U:localtime:tW:M??? ??? ?? ??\:??\:?? ????} == ""
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. error
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.endif
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mod-localtime:
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@echo $@
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# modifier name too short
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@echo ${%Y:L:localtim=1593536400}
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# 2020-07-01T00:00:00Z
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@echo ${%Y:L:localtime=1593536400}
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# modifier name too long
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@echo ${%Y:L:localtimer=1593536400}
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# If the modifier name is not matched exactly, fall back to the
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# :from=to modifier.
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@echo ${localtime:L:local%=gm%} == gmtime
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mod-localtime-indirect:
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@echo $@:
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# As of 2020-08-16, it is not possible to pass the seconds via a
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# variable expression. This is because parsing of the :localtime
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# modifier stops at the '$' and returns to ApplyModifiers.
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#
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# There, a colon would be skipped but not a dollar.
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# Parsing therefore continues at the '$' of the ${:U159...}, looking
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# for an ordinary variable modifier.
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#
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# At this point, the ${:U} is expanded and interpreted as a variable
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# modifier, which results in the error message "Unknown modifier '1'".
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#
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# If ApplyModifier_Localtime were to pass its argument through
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# ParseModifierPart, this would work.
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@echo ${%Y:L:localtime=${:U1593536400}}
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parse-errors:
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@echo $@:
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# As of 2020-10-31, it is possible to pass negative time stamps
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# to the :localtime modifier, resulting in dates before 1970.
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# Going back 50 years in the past is not a practical use case for
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# make.
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: -1 becomes ${:L:localtime=-1}.
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# Spaces are allowed, not because it would make sense but just as
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# a side-effect from using strtoul.
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: space 1 becomes ${:L:localtime= 1}.
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# 0 means now; to get consistent test results, the actual value has
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# to be normalized.
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: 0 becomes ${:L:localtime=0:C,^... ... .. ..:..:.. 20..$,ok,W}.
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: 1 becomes ${:L:localtime=1}.
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: INT32_MAX becomes ${:L:localtime=2147483647}.
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# This may be different if time_t is still a 32-bit signed integer.
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: INT32_MAX + 1 becomes ${:L:localtime=2147483648}.
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# Integer overflow.
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# Because this modifier is implemented using strtoul, the parsed
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# time is ULONG_MAX, which gets converted to -1. This results
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# in a time stamp of the second before 1970 (in UTC) or 3599 seconds
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# after New Year's Day in Europe/Berlin.
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: overflow becomes ${:L:localtime=10000000000000000000000000000000}.
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# As of 2020-10-31, there is no error handling while parsing the
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# :localtime modifier, thus no error message is printed. Parsing
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# stops after the '=', and the remaining string is parsed for
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# more variable modifiers. Because of the unknown modifier 'e',
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# the whole variable value is discarded and thus not printed.
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: letter becomes ${:L:localtime=error}.
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