help: New command.

2 files changed, 41 insertions, 1 deletions

diff --git a/lib/cmd/help.sh b/lib/cmd/help.sh
new file mode 100644
index 0000000..6dbe84e
--- /dev/null
+++ b/lib/cmd/help.sh
@@ -0,0 +1,40 @@
+# ProteanOS Development Kit
+# lib/cmd/help.sh
+# "help" command
+#
+# Copyright (C) 2013  Patrick "P. J." McDermott
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+cmd_help_main()
+{
+	local cmd=
+
+	if [ ${#} -eq 1 ]; then
+		cmd="${1}"
+		if is_cmd "${cmd}"; then
+			print_cmd_usage "${cmd}"
+			return 0
+		fi
+	fi
+
+	printf "$(get_msg 'cmd_help_head')\n\n" "${0}"
+
+	printf "$(get_msg 'cmd_help_opts_head')\n"
+	print_opt_summaries
+	printf '\n'
+
+	printf "$(get_msg 'cmd_help_summary_head')\n"
+	print_cmd_summaries
+}
diff --git a/lib/cmd/local.mk b/lib/cmd/local.mk
index 360910c..fb2cbdb 100644
--- a/lib/cmd/local.mk
+++ b/lib/cmd/local.mk
@@ -1,2 +1,2 @@
 pkgdatacmd_sources = \
-	
+	lib/cmd/help.sh