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#!/bin/sh
# $Id: vile-libdir-path,v 1.7 2023/01/01 18:00:11 tom Exp $
# Find the given vile helper-program, either in $PATH, or in a related
# lib-directory. If the program is already in $PATH, echo the existing
# $PATH, but if it is found in a related lib-directory, prepend that to $PATH
failed() {
echo "?? $*" >&2
exit 1
}
HELPER=vile-manfilt
[ $# != 0 ] && HELPER="$1"
OK_BIN=no
OK_LIB=
ARCH="`arch 2>/dev/null`"
[ -n "$ARCH" ] || ARCH=.
SAVE="$IFS"
IFS=':'
for dir in ${VILE_LIBDIR_PATH:-$PATH}
do
if [ -f "$dir"/"$HELPER" ]
then
OK_BIN=yes
break
elif [ -z "$OK_LIB" ]
then
[ -f "$dir/"vile ] || continue
head=${dir%/*}
for libs in \
"$head"/lib \
"$head"/lib[1-9]* \
"$head"/lib/*vile \
"$head"/lib[1-9]*/*vile \
"$head"/lib/"$ARCH"*/vile
do
[ -d "$libs" ] || continue
if test -f "$libs"/"$HELPER"
then
OK_LIB=$libs
fi
done
fi
done
IFS="$SAVE"
if [ $OK_BIN = yes ]
then
echo "$PATH"
elif [ -n "$OK_LIB" ]
then
echo "$OK_LIB:$PATH"
else
failed "cannot find $HELPER"
fi
|
