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iffe: Correct backslashes in POSIX command substitutions (re: aeda3502) (#414)

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In backtick command substitutions '\\' will only print one backslash,
while placing a backslash in front of a different character will
print a backslash followed by that character:
   $ echo `echo '\\\\ \3'`
   \\ \3
   $ echo $(echo '\\\\ \3')
   \\\\ \3
This difference in behavior was causing iffe to fail on Haiku after
the changes in aeda3502. This commit applies fixes for backslashes
in quoted strings to fix the Haiku build failure and other possible
bugs introduced by the referenced commit.
This commit is contained in:
Johnothan King 2022-01-06 21:11:17 -08:00 • committed by Martijn Dekker
parent ecce82c3ca
commit 997f0e9dd8
1 changed files with 8 additions and 8 deletions
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16
src/cmd/INIT/iffe.sh
View file

@ -2551,7 +2551,7 @@ int x;
do c=${x#-l}
case $c in
*[!abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]*)
c=$(echo '' $c | sed -e 's,.*[\\\\/],,' -e 's,\.[^.]*$,,' -e 's,[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_],_,g' -e '/^lib./s,^lib,,')
c=$(echo '' $c | sed -e 's,.*[\\/],,' -e 's,\.[^.]*$,,' -e 's,[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_],_,g' -e '/^lib./s,^lib,,')
;;
esac
case $config in
@ -2954,7 +2954,7 @@ int x;
*) case $regress in
'') case $x in
*-*) ;;
*) x=$(pwd | sed -e 's,.*[\\\\/],,' -e 's,\\..*,,' -e 's,^lib,,' -e 's,^,'${x}_',' -e 's,[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_],_,g')
*) x=$(pwd | sed -e 's,.*[\\/],,' -e 's,\..*,,' -e 's,^lib,,' -e 's,^,'${x}_',' -e 's,[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_],_,g')
# ksh n+ bug workaround
case $x in
*[!_]*) ;;
@ -3005,7 +3005,7 @@ int x;
?*) continue ;;
esac
case $v in
*.*) for x in $(echo $v | sed 's,\\., ,g')
*.*) for x in $(echo $v | sed 's,\., ,g')
do pre="$pre$nl#undef $x"
done
;;
@ -3062,7 +3062,7 @@ int x;
esac
case $c in
*[!abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_]*)
c=$(echo '' $c | sed -e 's,.*[\\\\/],,' -e 's,\.[^.]*$,,' -e 's,[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_],_,g' -e '/^lib./s,^lib,,')
c=$(echo '' $c | sed -e 's,.*[\\/],,' -e 's,\.[^.]*$,,' -e 's,[^abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_],_,g' -e '/^lib./s,^lib,,')
;;
esac
case $config in
@ -3557,7 +3557,7 @@ $inc
*) e='-e /[\\\\\/]sys[\\\\\/]'$f'\\.h"/d' ;;
esac
if compile $cc -E $tmp.c <&$nullin >$tmp.i
then i=$(sed -e '/^#[line ]*[0123456789][0123456789]*[ ][ ]*"[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ:]*[\\\\\/].*[\\\\\/]'$f'\\.h"/!d' $e -e s'/.*"\\(.*\\)".*/\\1/' -e 's,\\\\,/,g' -e 's,///*,/,g' $tmp.i | sed 1q)
then i=$(sed -e '/^#[line ]*[0123456789][0123456789]*[ ][ ]*"[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ:]*[\\\/].*[\\\/]'$f'\.h"/!d' $e -e 's/.*"\(.*\)".*/\1/' -e 's,\\,/,g' -e 's,///*,/,g' $tmp.i | sed 1q)
case $i in
[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ]:[\\/]*)
;;
@ -3568,7 +3568,7 @@ $ext
$inc
#include <$k>" > $tmp.c
if compile $cc -E $tmp.c <&$nullin >$tmp.i
then j=$(sed -e '/^#[line ]*[0123456789][0123456789]*[ ][ ]*"[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ:]*[\\\\\/].*[\\\\\/]'$f'\\.h"/!d' $e -e s'/.*"\\(.*\\)".*/\\1/' -e 's,\\\\,/,g' -e 's,///*,/,g' $tmp.i | sed 1q)
then j=$(sed -e '/^#[line ]*[0123456789][0123456789]*[ ][ ]*"[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ:]*[\\\/].*[\\\/]'$f'\.h"/!d' $e -e 's/.*"\(.*\)".*/\1/' -e 's,\\,/,g' -e 's,///*,/,g' $tmp.i | sed 1q)
wi=$(wc < "$i")
wj=$(wc < "$j")
case $wi in
@ -4000,9 +4000,9 @@ int _iffe_int = $v / 2;
if compile $cc -E $tmp.c <&$nullin >$tmp.i
then c=$i
case $c in
*[\\/]*) c=$(echo $c | sed 's,[\\\\/],[\\\\/],g') ;;
*[\\/]*) c=$(echo $c | sed 's,[\\/],[\\/],g') ;;
esac
case $(sed -e '/^#[line ]*1[ ][ ]*"[\\\\\/].*[\\\\\/]'$c'"/!d' $tmp.i) in
case $(sed -e '/^#[line ]*1[ ][ ]*"[\\\/].*[\\\/]'$c'"/!d' $tmp.i) in
?*) break ;;
esac
fi