facebook
/
zstd
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

escape glob pattern special characters in subject string before generating search patterns in combine.sh list_has_item

dev^2
William Ahern 2022-08-10 20:58:55 -07:00
parent cca3544708
commit 60fcc36af6
1 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
build/single_file_libs/combine.sh
View File

@ -74,6 +74,24 @@ is_pragma_once_line() {
# (originally used grep -Eq "(^|\s*)$2(\$|\s*))
readonly list_FS="$IFS"
list_has_item() {
# Re: escaping glob pattern special characters in item string:
#
# bash (tested 3.2.57, 5.1.4), dash (tested 0.5.10.2), NetBSD /bin/sh
# (tested 8.2), and Solaris /bin/sh (tested 11.4) require escaping
# backslashes in a bracket expression despite POSIX specifying that
# backslash loses significance in a bracket expression.
#
# Conversely, neither FreeBSD /bin/sh (tested 12.2) nor OpenBSD /bin/sh
# (tested 7.1) obey backslash-escaping in case statement patterns even
# outside bracket expressions, so escape special characters using bracket
# expressions.
#
# Solaris /bin/sh (tested 11.4) requires vertical bar (|) to be escaped.
#
# All accommodations should behave as expected under strict POSIX semantics.
if fnmatch "*[\\*?[|]*" "$2"; then
set -- "$1" "$(printf '%s\n' "$2" | sed -e 's/[*?[|]/[&]/g; s/[\]/[\\&]/g')"
fi
for item_P in "*[$list_FS]$2[$list_FS]*" "*[$list_FS]$2" "$2[$list_FS]*" "$2"; do
fnmatch "${item_P}" "$1" && return 0
done