Initial versions of pbs-package-* commands

1 files changed, 53 insertions, 0 deletions

diff --git a/pbs-package-fork b/pbs-package-fork
new file mode 100755
index 0000000..c906493
--- /dev/null
+++ b/pbs-package-fork
@@ -0,0 +1,53 @@
+#!/bin/bash -euE
+
+. $(which libremessages)
+
+cmd=${0##*/}
+usage() {
+	echo "Usage: $cmd [OPTIONS] REPOSITORY OLDPACKAGE REPO/NEWPACKAGE"
+	echo 'Forks a package.'
+	echo ''
+	echo 'To fork a local package, (for example, making `pcr/emacs-lucid`'
+	echo 'from `pcr/emacs-lucid`), the repository is the local filesystem,'
+	echo 'so use `./`'
+	echo ''
+	echo '    $cmd ./ emacs pcr/emacs-lucid'
+	echo ''
+	echo 'This forks the branch `packages/emacs` into a new branch'
+	echo '`packages/emacs-lucid`, creates the file `pbstrack` in it, and'
+	echo 'checks it out as a git submodule to the directory '
+	echo '`prc/emacs-lucid`.'
+	echo ''
+	echo 'Use `pbs-merge` to pull updates from the original package.'
+	echo ''
+	echo 'Options:'
+	echo '  -h            Show this message'
+}
+
+main() {
+	while getopts 'h' arg; do
+		case $arg in
+			h) usage; return 0;;
+			*) usage; return 1;;
+		esac
+	done
+	shift $(($OPTIND - 1))
+	if [[ $# != 3 ]]; then
+		usage
+		return 1
+	fi
+
+	local repository=$1
+	local oldpackage=$2
+	local dest=$3
+	local newpackage="${dest##*/}"
+
+	git submodule add -b "packages/${oldpackage}" "${repository}" "${dest}"
+	cd "${dest}"
+	git checkout -b "packages/${newpackage}"
+	printf '%s packages/%s\n' "${repository}" "${oldpackage}" > pbstrack
+	git add pbstrack
+	git commit -m 'Fork package from ${repository} ${oldpackage} to ${dest}'
+}
+
+main "$@"