Introduce new sunrise-commit implementation.

It is basically a nice frontend to call 'echangelog' and 'repoman
commit'. The current code supports git only, and works only inside the
package directory. Additionally, it requires new enough repoman (which
means live portage version right now).

sunrise-commit

@@ -0,0 +1,141 @@
+#!/bin/sh
+# sunrise-commit -- a helper script for Sunrise commiters.
+# (c) 2010 Michał Górny <gentoo@mgorny.alt.pl>
+# Released under the terms of the 3-clause BSD license.
+
+# Few output helpers.
+die() {
+	echo "${@}" >&2
+	exit 1
+}
+
+sayv() {
+	[ -n "${SC_VERBOSE}" ] && echo "${@}" >&2
+}
+
+req() {
+	"$@" || die "$@ failed."
+}
+
+# POSIX compat.
+local_supported() {
+	local test 2>/dev/null
+}
+
+local_supported || eval 'local() {
+	unset ${@}
+}'
+
+# See if we're in a repo, and what VCS are we using.
+find_repo() {
+	svn info >/dev/null 2>&1
+
+	if [ ${?} -eq 0 ]; then
+		SC_VCS=svn
+	else
+		local remotes
+		remotes=$(git branch -r 2>/dev/null)
+
+		if [ ${?} -ne 127 -a ${?} -ne 128 ]; then
+			echo "${remotes}" | grep git-svn >/dev/null 2>&1
+			if [ ${?} -eq 0 ]; then
+				SC_VCS=git-svn
+			else
+				SC_VCS=git
+			fi
+		else
+			die 'Unable to find any familiar repository type (are you inside the repo?).'
+		fi
+	fi
+
+	if [ ${SC_VCS} = svn ]; then
+		die 'Native subversion repositories are not supported at the moment.'
+	fi
+
+	sayv "Ok, we're in ${SC_VCS} working tree. Let's see what I can do around here..."
+}
+
+# Look around for ebuilds.
+find_ebuilds() {
+	# POSIX is fun -- look for ebuilds in the current directory.
+	if [ -n "$(find \( -name '*.ebuild' -print -o ! -name '.' -prune \))" ]; then
+		local stripped
+
+		# Get CATEGORY and PN.
+		stripped=${PWD%/*}
+		stripped=${stripped%/*}
+		SC_CP=${PWD#${stripped}/}
+
+		SC_SCENARIO=ebuild-commit
+		sayv "We have some ebuilds for ${SC_CP} here."
+	else
+		die 'No familar situation found -- no ebuilds here.'
+	fi
+}
+
+# VCS helpers.
+check_for_changes() {
+	local output
+
+	if [ ${SC_VCS%-svn} = git ]; then
+		output="$(git diff-index --name-status --relative HEAD)"
+	fi
+
+	sayv "${output}"
+	[ -n "${output}" ]
+}
+
+vcs_reset() {
+	if [ ${SC_VCS%-svn} = git ]; then
+		req git reset -q HEAD "${1}"
+		req git checkout -f "${1}"
+	fi
+}
+
+# Guess what!
+main() {
+	local commitmsg
+	unset SC_VERBOSE
+
+	while [ ${#} -gt 0 ]; do
+		case "${1}" in
+			-v|--verbose)
+				SC_VERBOSE=1
+				;;
+			--)
+				shift
+				commitmsg="${commitmsg+${commitmsg} }${@}"
+				break
+				;;
+			*)
+				commitmsg="${commitmsg+${commitmsg} }${1}"
+				;;
+		esac
+		shift
+	done
+
+	[ -n "${commitmsg}" ] || die 'No commit message provided.'
+
+	find_repo
+	find_ebuilds
+
+	case ${SC_SCENARIO} in
+		ebuild-commit)
+			check_for_changes || die 'No changes found to commit.'
+
+			# With native git repos, we do not do ChangeLogs by default...
+			# ...at least unless they're already there.
+			if [ ${SC_VCS} = git -a ! -f ChangeLog ]; then
+				sayv 'Cleaning up the ChangeLog...'
+				vcs_reset ChangeLog
+				sayv '...and appending to it.'
+				echangelog "${commitmsg}"
+			fi
+
+			sayv "Now, let's let repoman do its job..."
+			exec repoman commit -a -m "${SC_CP}: ${commitmsg}"
+			;;
+	esac
+}
+
+main "${@}"