97 lines
2.6 KiB
Bash
97 lines
2.6 KiB
Bash
makeWrapper() {
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local original=$1
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local wrapper=$2
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local params varName value command separator n fileNames
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local flagsBefore flags
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ensureDir "$(dirname $wrapper)"
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echo "#! $SHELL -e" > $wrapper
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params=("$@")
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for ((n = 2; n < ${#params[*]}; n += 1)); do
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p=${params[$n]}
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if test "$p" = "--set"; then
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varName=${params[$((n + 1))]}
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value=${params[$((n + 2))]}
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n=$((n + 2))
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echo "export $varName=$value" >> $wrapper
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fi
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if test "$p" = "--run"; then
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command=${params[$((n + 1))]}
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n=$((n + 1))
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echo "$command" >> $wrapper
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fi
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if test "$p" = "--suffix" -o "$p" = "--prefix"; then
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varName=${params[$((n + 1))]}
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separator=${params[$((n + 2))]}
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value=${params[$((n + 3))]}
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n=$((n + 3))
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if test -n "$value"; then
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if test "$p" = "--suffix"; then
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echo "export $varName=\$$varName\${$varName:+$separator}$value" >> $wrapper
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else
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echo "export $varName=$value\${$varName:+$separator}\$$varName" >> $wrapper
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fi
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fi
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fi
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if test "$p" = "--suffix-each"; then
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varName=${params[$((n + 1))]}
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separator=${params[$((n + 2))]}
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values=${params[$((n + 3))]}
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n=$((n + 3))
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for value in $values; do
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echo "export $varName=\$$varName\${$varName:+$separator}$value" >> $wrapper
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done
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fi
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if test "$p" = "--suffix-contents"; then
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varName=${params[$((n + 1))]}
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separator=${params[$((n + 2))]}
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fileNames=${params[$((n + 3))]}
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n=$((n + 3))
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for fileName in $fileNames; do
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echo "export $varName=\$$varName\${$varName:+$separator}$(cat $fileName)" >> $wrapper
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done
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fi
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if test "$p" = "--add-flags"; then
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flags=${params[$((n + 1))]}
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n=$((n + 1))
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flagsBefore="$flagsBefore $flags"
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fi
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done
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echo "exec -a $(basename "$wrapper") \"$original\" $flagsBefore \"\$@\"" >> $wrapper
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chmod +x $wrapper
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}
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addSuffix() {
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suffix=$1
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shift
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for name in "$@"; do
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echo "$name$suffix"
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done
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}
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filterExisting() {
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for fn in "$@"; do
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if test -e "$fn"; then
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echo "$fn"
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fi
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done
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}
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# Syntax: wrapProgram <PROGRAM> <MAKE-WRAPPER FLAGS...>
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wrapProgram() {
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local prog="$1"
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local hidden="$(dirname "$prog")/.wrapped-$(basename "$prog")"
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mv $prog $hidden
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makeWrapper $hidden $prog "$@"
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}
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