pkgctl: add a unified command-line frontend for devtools

This is the first step of a simple and highly structured unified
interface to devtools commands in a single wrapper.

The split is based on groups like `repo`, `build` and `diff`

Signed-off-by: Levente Polyak <anthraxx@archlinux.org>

3 files changed, 66 insertions, 8 deletions

diff --git a/src/diffpkg.in b/src/diffpkg.in
index 6d07419..4856e44 100644
--- a/src/diffpkg.in
+++ b/src/diffpkg.in
@@ -5,8 +5,9 @@
 m4_include(lib/common.sh)
 
 usage() {
-    cat <<- _EOF_
-		Usage: ${BASH_SOURCE[0]##*/} [OPTIONS] [MODES] [FILE|PKGNAME...]
+	local -r COMMAND=${_DEVTOOLS_COMMAND:-${BASH_SOURCE[0]##*/}}
+	cat <<- _EOF_
+		Usage: ${COMMAND} [OPTIONS] [MODES] [FILE|PKGNAME...]
 
 		Searches for a locally built package corresponding to the PKGBUILD, and
 		downloads the last version of that package from the Pacman repositories.
@@ -17,8 +18,8 @@ usage() {
 		When given two packages, diff both packages against each other.
 
 		In either case, a package name will be converted to a filename from the
-		cache, and diffpkg will proceed as though this filename was initially
-		specified.
+		cache, and '${COMMAND}' will proceed as though this filename was
+		initially specified.
 
 		OPTIONS
 		    -M, --makepkg-config Set an alternate makepkg configuration file
@@ -300,7 +301,7 @@ shopt -u extglob
 
 if (( $# < 2 )); then
 	if [[ ! -f PKGBUILD ]]; then
-		die "This must be run in the directory of a built package.\nTry '$(basename "$0") --help' for more information."
+		die "This must be run in the directory of a built package.\nTry '${COMMAND} --help' for more information."
 	fi
 
 	# shellcheck source=contrib/makepkg/PKGBUILD.proto
diff --git a/src/pkgctl.in b/src/pkgctl.in
new file mode 100644
index 0000000..9b7d89c
--- /dev/null
+++ b/src/pkgctl.in
@@ -0,0 +1,56 @@
+#!/bin/bash
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+m4_include(lib/common.sh)
+
+set -e
+
+
+usage() {
+	local -r COMMAND=${BASH_SOURCE[0]##*/}
+	cat <<- _EOF_
+		Usage: ${COMMAND} [COMMAND] [OPTIONS]
+
+		Unified command-line frontend for devtools.
+
+		COMMANDS
+		    diff    Compare package files using different modes
+		    repo    Manage Git packaging repositories and their configuration
+
+		OPTIONS
+		    -h, --help     Show this help text
+_EOF_
+}
+
+if (( $# < 1 )); then
+	usage
+	exit 1
+fi
+
+export _DEVTOOLS_COMMAND='pkgctl'
+
+# command checking
+while (( $# )); do
+	case $1 in
+		-h|--help)
+			usage
+			exit 0
+			;;
+		repo)
+			_DEVTOOLS_COMMAND+=" $1"
+			shift
+			pkgrepo "$@"
+			exit 0
+			;;
+		diff)
+			_DEVTOOLS_COMMAND+=" $1"
+			shift
+			diffpkg "$@"
+			exit 0
+			;;
+		*)
+			die "invalid command: %s" "$1"
+			;;
+	esac
+done
diff --git a/src/pkgrepo.in b/src/pkgrepo.in
index c6f5951..00f46e1 100644
--- a/src/pkgrepo.in
+++ b/src/pkgrepo.in
@@ -9,10 +9,11 @@ source /usr/share/makepkg/util/message.sh
 
 set -e
 
+COMMAND=${_DEVTOOLS_COMMAND:-${BASH_SOURCE[0]##*/}}
 
 usage() {
     cat <<- _EOF_
-		Usage: ${BASH_SOURCE[0]##*/} [COMMAND] [OPTIONS]
+		Usage: ${COMMAND} [COMMAND] [OPTIONS]
 
 		Manage Git packaging repositories and helps with their configuration
 		according to distro specs.
@@ -37,7 +38,7 @@ _EOF_
 
 usage_clone() {
     cat <<- _EOF_
-		Usage: ${BASH_SOURCE[0]##*/} clone [OPTIONS] [PKGNAME...]
+		Usage: ${COMMAND} clone [OPTIONS] [PKGNAME...]
 
 		Clone Git packaging repositories from the canonical namespace.
 
@@ -57,7 +58,7 @@ _EOF_
 
 usage_configure() {
     cat <<- _EOF_
-		Usage: ${BASH_SOURCE[0]##*/} configure [OPTIONS] [PATH...]
+		Usage: ${COMMAND} configure [OPTIONS] [PATH...]
 
 		Configure Git packaging repositories according to distro specs and
 		makepkg.conf settings.