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| author |   Kerin Millar <kfm@plushkava.net> | 2024-08-17 16:42:41 +0100 |
|---|---|---|
| committer | Kerin Millar <kfm@plushkava.net> | 2024-08-22 20:37:46 +0100 |
| commit | f77a397df8c2a623a296600ee38a01dbdd98933b (patch) | |
| tree | 6fae154684964fa2b9e902ee9db9a2f01e839010 | |
| parent | Move an SC2317 exemption closer to where it is needed (diff) | |
| download | gentoo-functions-f77a397df8c2a623a296600ee38a01dbdd98933b.tar.gz gentoo-functions-f77a397df8c2a623a296600ee38a01dbdd98933b.tar.bz2 gentoo-functions-f77a397df8c2a623a296600ee38a01dbdd98933b.zip | |
Optimise trim() for bash where processing the positional parameters
Render trim() faster in bash for cases where only the positional
parameters are to be processed e.g. var=$(trim "$var") or
var=${ trim "$var"; }.
Signed-off-by: Kerin Millar <kfm@plushkava.net>
| -rw-r--r-- | functions.sh | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/functions.sh b/functions.sh index bd96df6..3dd2969 100644 --- a/functions.sh +++ b/functions.sh @@ -650,12 +650,21 @@ srandom() # trim() { - if [ "$#" -gt 0 ]; then - printf '%s\n' "$@" + local arg + + if [ "$#" -gt 0 ] && [ "${BASH}" ]; then + for arg; do + eval '[[ ${arg} =~ ^[[:space:]]+ ]] && arg=${arg:${#BASH_REMATCH}}' + eval '[[ ${arg} =~ [[:space:]]+$ ]] && arg=${arg:0:${#arg} - ${#BASH_REMATCH}}' + printf '%s\n' "${arg}" + done else - cat - fi | - sed -e 's/^[[:space:]]\{1,\}//' -e 's/[[:space:]]\{1,\}$//' + if [ "$#" -gt 0 ]; then + printf '%s\n' "$@" + else + cat + fi | sed -e 's/^[[:space:]]\{1,\}//' -e 's/[[:space:]]\{1,\}$//' + fi } # |