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#!/bin/sh
# Run this before committing changes to shell scripts.
PROGNAME=${0##*/}
ASH="ash -n"
BASH="bash --posix -n"
DASH="dash -n"
KSH="ksh -n"
POSH="posh -n"
ERROR=""
usage () {
cat <<EOF
Usage: $PROGNAME SCRIPT ...
Perform syntax checks on each SCRIPT with POSIX-compatible shells available on
the system.
EOF
}
howl () {
echo "$PROGNAME: error; $*" >&2
}
warn () {
echo "$PROGNAME: warning; $*" >&2
}
if [ -z "$1" ]; then
usage >&2
exit 2
fi
while [ -n "$1" ]; do
if ! [ -r "$1" ]; then
howl "\"$1\" does not exist or is not readable"
usage >&2
exit 2
fi
for SH in "$BASH" "$DASH" "$KSH" "$POSH"; do
CMD=${SH%% *}
if which "$CMD" >/dev/null 2>&1; then
if ! $SH "$1"; then
echo "$PROGNAME: \"$1\" failed syntax check with $CMD"
error="yes"
fi
else
warn "cannot verify correctness of \"$1\" with $CMD; shell not" \
"available"
fi
done
shift
done
if [ -n "$ERROR" ]; then
exit 1
fi
exit 0
# vim:set ai et sts=4 sw=4 tw=80:
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