feat(version): introduce version check subcommand

The version subcommand handles pkgver related commands, the first
subcommand being `check`. Check runs nvchecker if a `.nvchecker.toml`
file exists and compares the current pkgver with the latest release.

Introduces nvchecker as optional dependency which has to be installed in
order to use this particular subcommand.

BREAKING CHANGE: formerly pkgctl version would output the version of the
pkgctl tool, now it is used as a version related subcommand.

Fixes #140

Component: pkgctl version
Component: pkgctl version check
Co-authored-by: Christian Heusel <christian@heusel.eu>

1 files changed, 16 insertions, 4 deletions

diff --git a/src/pkgctl.in b/src/pkgctl.in
index 070e0cd..9deb4b2 100644
--- a/src/pkgctl.in
+++ b/src/pkgctl.in
@@ -27,7 +27,7 @@ usage() {
 		    release Release step to commit, tag and upload build artifacts
 		    repo    Manage Git packaging repositories and their configuration
 		    search  Search for an expression across the GitLab packaging group
-		    version Show pkgctl version information
+		    version Package version related commands
 
 		OPTIONS
 		    -h, --help     Show this help text
@@ -39,6 +39,12 @@ if (( $# < 1 )); then
 	exit 1
 fi
 
+pkgctl_version_print() {
+	cat <<- _EOF_
+		pkgctl @buildtoolver@
+_EOF_
+}
+
 export _DEVTOOLS_COMMAND='pkgctl'
 
 setup_workdir
@@ -114,14 +120,20 @@ while (( $# )); do
 			pkgctl_search "$@"
 			exit 0
 			;;
-		version|--version|-V)
+		version)
 			_DEVTOOLS_COMMAND+=" $1"
 			shift
-			# shellcheck source=src/lib/version/version.sh
-			source "${_DEVTOOLS_LIBRARY_DIR}"/lib/version/version.sh
+			# shellcheck source=src/lib/version.sh
+			source "${_DEVTOOLS_LIBRARY_DIR}"/lib/version.sh
 			pkgctl_version "$@"
 			exit 0
 			;;
+		--version|-V)
+			_DEVTOOLS_COMMAND+=" $1"
+			shift
+			pkgctl_version_print
+			exit 0
+			;;
 		*)
 			die "invalid command: %s" "$1"
 			;;