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#!/bin/bash
# xrevbump MESSAGE TEMPLATES... -- git commit options - increase template revision and commit
# TEMPLATES can be "-", then read linewise from stdin.

MESSAGE=$1
shift

if [ $# -eq 0 ]; then
	printf "Usage: xrevbump MESSAGE TEMPLATES... -- git commit options\n" >&2
        exit 1
fi

declare -a seen

bump() {
	t="$1"
	if [ -f "$t" ]; then
		:
	elif [ -f "$t/template" ]; then
		t="$t/template"
	elif [ -f "srcpkgs/$t/template" ]; then
		t="srcpkgs/$t/template"
	elif [ -f "$XBPS_DISTDIR/srcpkgs/$1/template" ]; then
		t="$XBPS_DISTDIR/srcpkgs/$1/template"
	else
		printf "Cannot find template '%s'\n" "$t"
		return
	fi

	. "$t"

	case "${seen[@]}" in
	*" $pkgname "*)
		printf "%s: bumped already.\n" "$t"
		;;
	*)
		if ! $(git diff HEAD "$t" | grep -q '^[-+]revision='); then
			revision=$((revision + 1))
			printf "%s: bump to revision %d\n" "$t" "$revision"
			sed -i -e "/^revision=/s/=.*/=$revision/" "$t"
		else
			printf "%s: committing\n" "$t"
		fi
		git -C "${t%/*}" commit $commit_args -m "$pkgname: $MESSAGE" . || printf "\033[1;31m%s: failed to commit!\033[0m\n" "$t"
		seen+=($pkgname)
		;;
	esac
}

XBPS_DISTDIR="$(xdistdir)"

declare -a templates

if [ "$1" = - ]; then
	shift
	if [ "$1" =  -- ]; then
		shift
		commit_args="$@"
	fi
	IFS=$'\n' read -d '' -r -a templates
else
	for t; do
		if [ "$1" =  -- ]; then
			shift
			commit_args="$@"
			break
		fi
		templates+=($t)
		shift
	done
fi

for t in "${templates[@]}"; do
	bump "$t"
done