void-packages/helper-templates/replace-interpreter.sh

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#
# This helper replaces shebang paths pointing to the correct ones
# as used by xbps. Multiple languages are supported:
#
# - GNU Bash
# - Perl
# - Python
#
bash_regexp=".*sh"
perl_regexp=".*perl[^[:space:]]*"
python_regexp=".*python[^[:space:]]*"
replace_interpreter()
{
local lang="$1"
local file="$2"
local trsb=
local orsb=
[ -z $lang -o -z $file ] && return 1
case $lang in
bash)
orsb=$bash_regexp
trpath="$XBPS_MASTERDIR/bin/bash"
;;
perl)
orsb=$perl_regexp
trpath="$XBPS_MASTERDIR/bin/perl"
;;
python)
orsb=$python_regexp
trpath="$XBPS_MASTERDIR/bin/python"
;;
*)
;;
esac
if [ -f $wrksrc/$file ]; then
$sed_cmd -e "1s|^#![[:space:]]*${orsb}|#!${trpath}|" \
$wrksrc/$file > $wrksrc/$file.in && \
$mv_cmd $wrksrc/$file.in $wrksrc/$file && \
$chmod_cmd a+x $wrksrc/$file && \
echo "=> Transformed $lang script: ${file##$wrksrc}."
else
echo "=> Ignoring unexistent $lang script: ${file##$wrksrc}."
fi
}