#!/usr/bin/env bash
#
# Remove files from a GIT repository.
# Copyright (c) Petr Baudis, 2005
#
# Takes a list of file names at the command line, and schedules them
# for removal from the GIT repository at the next commit.
#
# OPTIONS
# -------
# -f:: Force removal of the physical files
#	Also delete the files from the tree physically.
#
# -n:: Keep the physical files
#	Do not delete the files from the tree physically, if they are
#	still there. So it effectively just makes Cogito to stop caring
#	about the file. This is the default.
#
# -r:: Remove files recursively
#	If you pass cg-rm this flag and any directory names, it will try
#	to remove files in those directories recursively.

USAGE="cg-rm [-f] [-n] [-r] FILE..."

. "${COGITO_LIB}"cg-Xlib || exit 1

delete=
recursive=
while optparse; do
	if optparse -f; then
		delete=1
	elif optparse -n; then
		delete=
	elif optparse -r; then
		recursive=1
	else
		optfail
	fi
done

[ -n "${ARGS[*]}" ] || usage

TMPFILE="$(mktemp -t gitrm.XXXXXX)" || exit 1
TMPDIRFILE="$(mktemp -t gitrm.XXXXXX)" || exit 1
error=
for file in "${ARGS[@]}"; do
	absfile="$_git_relpath$file"
	if [ -d "$absfile" ]; then
		if [ "$recursive" ]; then
			echo "$file" >>"$TMPDIRFILE"
			git-ls-files "$absfile" >>"$TMPFILE"
		else
			echo "$file is a directory (use cg-rm -r?)" >&2
			error=1
		fi
	else
		echo "$file" >>"$TMPFILE"
	fi
done

cat "$TMPFILE" | sed 's/^/Removing file /'
if [ "$delete" ]; then (
	cd "${_git_relpath:-.}"
	cat "$TMPFILE" | tr '\n' '\0' | xargs -0 rm -f
	[ -s "$TMPDIRFILE" ] && cat "$TMPDIRFILE" | tr '\n' '\0' | xargs -0 rmdir --ignore-fail-on-non-empty -p
); fi
cat "$TMPFILE" | sed "s|^|$_git_relpath|" | path_xargs git-update-index --force-remove -- || error=1

rm "$TMPFILE" "$TMPDIRFILE"

[ "$error" ] && die "warning: not all items could have been removed"
exit 0