diff options
Diffstat (limited to 'unit-tests/modmisc.mk')
| -rw-r--r-- | unit-tests/modmisc.mk | 61 |
1 files changed, 59 insertions, 2 deletions
diff --git a/unit-tests/modmisc.mk b/unit-tests/modmisc.mk index 043498fb1af4..8c20304ba1ef 100644 --- a/unit-tests/modmisc.mk +++ b/unit-tests/modmisc.mk @@ -1,4 +1,4 @@ -# $Id: modmisc.mk,v 1.1.1.1 2014/08/30 18:57:18 sjg Exp $ +# $Id: modmisc.mk,v 1.1.1.2 2020/07/04 17:52:46 sjg Exp $ # # miscellaneous modifier tests @@ -15,7 +15,8 @@ MOD_HOMES=S,/home/,/homes/, MOD_OPT=@d@$${exists($$d):?$$d:$${d:S,/usr,/opt,}}@ MOD_SEP=S,:, ,g -all: modvar modvarloop modsysv +all: modvar modvarloop modsysv mod-HTE emptyvar undefvar +all: mod-S mod-C mod-at-varname mod-at-resolve modsysv: @echo "The answer is ${libfoo.a:L:libfoo.a=42}" @@ -36,3 +37,59 @@ modvarloop: @echo "path_/usr/xbin=${path_/usr/xbin}" @echo "paths=${paths}" @echo "PATHS=${paths:tu}" + +PATHNAMES= a/b/c def a.b.c a.b/c a a.a .gitignore a a.a +mod-HTE: + @echo "dirname of '"${PATHNAMES:Q}"' is '"${PATHNAMES:H:Q}"'" + @echo "basename of '"${PATHNAMES:Q}"' is '"${PATHNAMES:T:Q}"'" + @echo "suffix of '"${PATHNAMES:Q}"' is '"${PATHNAMES:E:Q}"'" + @echo "root of '"${PATHNAMES:Q}"' is '"${PATHNAMES:R:Q}"'" + +# When a modifier is applied to the "" variable, the result is discarded. +emptyvar: + @echo S:${:S,^$,empty,} + @echo C:${:C,^$,empty,} + @echo @:${:@var@${var}@} + +# The :U modifier turns even the "" variable into something that has a value. +# The resulting variable is empty, but is still considered to contain a +# single empty word. This word can be accessed by the :S and :C modifiers, +# but not by the :@ modifier since it explicitly skips empty words. +undefvar: + @echo S:${:U:S,^$,empty,} + @echo C:${:U:C,^$,empty,} + @echo @:${:U:@var@empty@} + +mod-S: + @echo :${:Ua b b c:S,a b,,:Q}: + @echo :${:Ua b b c:S,a b,,1:Q}: + @echo :${:Ua b b c:S,a b,,W:Q}: + @echo :${:Ua b b c:S,b,,g:Q}: + @echo :${:U1 2 3 1 2 3:S,1 2,___,Wg:S,_,x,:Q}: + +mod-C: + @echo :${:Ua b b c:C,a b,,:Q}: + @echo :${:Ua b b c:C,a b,,1:Q}: + @echo :${:Ua b b c:C,a b,,W:Q}: + @echo :${:Uword1 word2:C,****,____,g:C,word,____,:Q}: + @echo :${:Ua b b c:C,b,,g:Q}: + @echo :${:U1 2 3 1 2 3:C,1 2,___,Wg:C,_,x,:Q}: + +# In the :@ modifier, the name of the loop variable can even be generated +# dynamically. There's no practical use-case for this, and hopefully nobody +# will ever depend on this, but technically it's possible. +mod-at-varname: + @echo :${:Uone two three:@${:Ubar:S,b,v,}@+${var}+@:Q}: + +# The :@ modifier resolves the variables a little more often than expected. +# In particular, it resolves _all_ variables from the context, and not only +# the loop variable (in this case v). +# +# The d means direct reference, the i means indirect reference. +RESOLVE= ${RES1} $${RES1} +RES1= 1d${RES2} 1i$${RES2} +RES2= 2d${RES3} 2i$${RES3} +RES3= 3 + +mod-at-resolve: + @echo $@:${RESOLVE:@v@w${v}w@:Q}: |