reinplace-check

#!/bin/sh

readonly PAGER=${PAGER:-less}
readonly PAGER_DIFF=${PAGER_DIFF:-$PAGER}
readonly PATHFIX=$(make -V USES | grep pathfix >/dev/null; echo $?)
readonly PATHFILE=$(make -V PATHFIX_MAKEFILEIN)
readonly PKGNAME=$(make -V PKGNAME 2>/dev/null)
readonly cmd=${1:-check}

valid_reinplace_file() {
	local filename path=$1 pattern

	#TODO Makefile.in may be changed by REINPLACE_CMD too, fix it
	if [ $PATHFIX -eq 0 ]; then
		filename=$(basename "${path%.bak}")
		for pattern in $PATHFIX_PATTERNS; do
			[ "$filename" = "$pattern" ] && return 1
		done
	fi
	case $path in *.libtool.bak|*ltmain.sh.bak) return 1 ;; esac
}

if [ "$cmd" != "check" -a "$cmd" != "show" ]; then
	<< EOF >&2 cat
Usage: ${0##*/} [check]
       ${0##*/} show [patterns]

    check - print files not modified by REINPLACE_CMD (default operation)
    show  - display diff(1) of modified files with names matching patterns or
            all files if patterns was not specified

EOF
	exit 1
fi

if [ ! "$PKGNAME" ]; then
	echo "===> This is not port directory" >&2
	exit 1
fi

flavors=$(make -V FLAVORS | sed 's,^ ,,')
if [ "$flavors" ]; then
	for f in $flavors; do
		[ -f "$(make FLAVOR=$f -V CONFIGURE_COOKIE)" ] || continue
		wrkdirs="$wrkdirs $(basename "$(make FLAVOR=$f -V WRKDIR)")"
	done
else
	[ -f "$(make -V CONFIGURE_COOKIE)" ] &&
		wrkdirs=$(basename "$(make -V WRKDIR)")
fi

if [ ! "$wrkdirs" ]; then
	echo "===> No suitable work directory found, run make configure first" >&2
	exit 1
fi

for dir in $wrkdirs; do
	bak_files=$(find "$dir" -name "*.bak" -print)
	[ "$bak_files" ] && files="$files $bak_files"
done
[ "$files" ] || exit 0

[ $PATHFIX -eq 0 ] &&
	PATHFIX_PATTERNS=$(make -V PATHFIX_MAKEFILEIN -V PATHFIX_CMAKELISTSTXT)

if [ "$cmd" = "show" ]; then
	shift
	patterns=$*

	for file in $files; do
		valid_reinplace_file "$file" || continue
		if [ "$patterns" ]; then
			matched=0
			for p in $patterns; do
				case ${file%.bak} in *$p*)
					matched=1
					break
				esac
			done
			[ $matched -eq 1 ] || continue
		fi
		diff -u "$file" "${file%.bak}"
	done | $PAGER_DIFF
else
	for file in $files; do
		valid_reinplace_file "$file" || continue
		cmp -s "$file" "${file%.bak}" &&
			echo "File ${file%.bak} seems to be unmodified"
	done
fi