mirror of
https://github.com/freebsd/freebsd-src
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1a2b743f6b
from ChangeLog:
(most of this by rillig@)
o lots of style and white-space cleanup
o lots more unit tests for variable modifiers
o simplified description of some functions
o str.c: refactor Str_Match
o var.c: debugging output for :@
constify VarModify parameter
fix :hash modifier on 16-bit platforms
remove unnecessary forward declarations
refactor ApplyModifier_SysV to have less indentation
simplify code for :E and :R
clean up code for :H and :T
refactor ApplyModifiers
* var.c: we need stdint.h on some platforms to get uint32_t
* unit-test/Makefile: we need to supress the specific error
for RE substitution error in modmisc, since it varies accross
different OS.
85 lines
1.9 KiB
Makefile
85 lines
1.9 KiB
Makefile
# $Id: varmisc.mk,v 1.11 2020/07/02 15:43:43 sjg Exp $
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#
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# Miscellaneous variable tests.
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all: unmatched_var_paren D_true U_true D_false U_false Q_lhs Q_rhs NQ_none \
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strftime cmpv manok
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unmatched_var_paren:
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@echo ${foo::=foo-text}
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True = ${echo true >&2:L:sh}TRUE
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False= ${echo false >&2:L:sh}FALSE
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VSET= is set
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.undef UNDEF
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U_false:
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@echo :U skipped when var set
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@echo ${VSET:U${False}}
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D_false:
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@echo :D skipped if var undef
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@echo ${UNDEF:D${False}}
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U_true:
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@echo :U expanded when var undef
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@echo ${UNDEF:U${True}}
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D_true:
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@echo :D expanded when var set
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@echo ${VSET:D${True}}
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Q_lhs:
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@echo :? only lhs when value true
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@echo ${1:L:?${True}:${False}}
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Q_rhs:
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@echo :? only rhs when value false
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@echo ${0:L:?${True}:${False}}
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NQ_none:
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@echo do not evaluate or expand :? if discarding
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@echo ${VSET:U${1:L:?${True}:${False}}}
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April1= 1459494000
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# slightly contorted syntax to use utc via variable
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strftime:
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@echo ${year=%Y month=%m day=%d:L:gmtime=1459494000}
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@echo date=${%Y%m%d:L:${gmtime=${April1}:L}}
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# big jumps to handle 3 digits per step
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M_cmpv.units = 1 1000 1000000
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M_cmpv = S,., ,g:_:range:@i@+ $${_:[-$$i]} \* $${M_cmpv.units:[$$i]}@:S,^,expr 0 ,1:sh
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Version = 123.456.789
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cmpv.only = target specific vars
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cmpv:
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@echo Version=${Version} == ${Version:${M_cmpv}}
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@echo Literal=3.4.5 == ${3.4.5:L:${M_cmpv}}
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@echo We have ${${.TARGET:T}.only}
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# catch misshandling of nested vars in .for loop
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MAN=
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MAN1= make.1
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.for s in 1 2
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.if defined(MAN$s) && !empty(MAN$s)
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MAN+= ${MAN$s}
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.endif
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.endfor
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manok:
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@echo MAN=${MAN}
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# This is an expanded variant of the above .for loop.
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# Between 2020-08-28 and 2020-07-02 this paragraph generated a wrong
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# error message "Variable VARNAME is recursive".
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# When evaluating the !empty expression, the ${:U1} was not expanded and
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# thus resulted in the seeming definition VARNAME=${VARNAME}, which is
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# obviously recursive.
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VARNAME= ${VARNAME${:U1}}
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.if defined(VARNAME${:U2}) && !empty(VARNAME${:U2})
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.endif
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