Merge branch 'feature/use-shld'

1 files changed, 122 insertions, 0 deletions

diff --git a/src/cmd.sh b/src/cmd.sh
new file mode 100644
index 0000000..d4e7824
--- /dev/null
+++ b/src/cmd.sh
@@ -0,0 +1,122 @@
+# Command-related functions
+#
+# Copyright (C) 2013  Patrick "P. J." McDermott
+#
+# This file is part of the ProteanOS Development Kit.
+#
+# The ProteanOS Development Kit 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.
+#
+# The ProteanOS Development Kit 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 the ProteanOS Development Kit.  If not, see
+# <http://www.gnu.org/licenses/>.
+
+cmds=' '
+running_cmd=
+running_cmd_clean=
+
+register_cmd()
+{
+	local cmd="${1}"
+	shift 1
+
+	cmds="${cmds}${cmd} "
+	return 0
+}
+
+print_opt_summaries()
+{
+	local padding=
+	local opt=
+	local opt_out=
+	local summary=
+
+	padding="$(printf '%24s' '')"
+	for opt in $(printf '%s' "${OPTSTRING}" | sed 's/\([a-zA-Z0-9]\)/ \1/g')
+	do
+		if [ ${#opt} -eq 1 ]; then
+			# No argument expected.
+			opt_out="-${opt}"
+		else
+			# Argument expected.
+			opt="${opt%?}"
+			opt_out="-${opt} $(get_msg "opt_${opt}_arg")"
+		fi
+		if [ ${#opt_out} -gt 20 ]; then
+			printf '  %s\n%24s' "${opt_out}" ''
+		else
+			printf '  %-20s  ' "${opt_out}"
+		fi
+		summary="$(get_msg "opt_${opt}_summary")"
+		printf '%s\n' "${summary}" | fold -s -w 56 | \
+			sed "2,\$s/^/${padding}/;"
+	done
+}
+
+print_cmd_summaries()
+{
+	local padding=
+	local cmd=
+	local cmd_clean=
+	local summary=
+
+	padding="$(printf '%24s' '')"
+	for cmd in ${cmds}; do
+		if [ ${#cmd} -gt 20 ]; then
+			printf '  %s\n%24s' "${cmd}" ''
+		else
+			printf '  %-20s  ' "${cmd}"
+		fi
+		cmd_clean="$(printf '%s' "${cmd}" | \
+			tr '[A-Z]' '[a-z]' | tr -C '[a-z0-9_]' '_')"
+		summary="$(get_msg "cmd_${cmd_clean}_summary")"
+		printf '%s\n' "${summary}" | fold -s -w 56 | \
+			sed "2,\$s/^/${padding}/;"
+	done
+}
+
+print_cmd_usage()
+{
+	local cmd="${1}"
+	local cmd_clean=
+	local usage=
+
+	cmd_clean="$(printf '%s' "${cmd}" | \
+		tr '[A-Z]' '[a-z]' | tr -C '[a-z0-9_]' '_')"
+	usage="$(get_msg "cmd_${cmd_clean}_usage")"
+
+	printf "$(get_msg 'cmd_usage')\n" "${0}" "${cmd}" "${usage}"
+}
+
+is_cmd()
+{
+	local cmd="${1}"
+
+	[ "x$(printf '%s\n' ${cmds} | grep "^${cmd}$")" = "x${cmd}" ]
+}
+
+run_cmd()
+{
+	local cmd="${1}"
+	local cmd_clean=
+	shift
+
+	cmd_clean="$(printf '%s' "${cmd}" | \
+		tr '[A-Z]' '[a-z]' | tr -C '[a-z0-9_]' '_')"
+	if is_cmd "${cmd}"; then
+		running_cmd="${cmd}"
+		running_cmd_clean="${cmd_clean}"
+		"cmd_${cmd_clean}_main" "${@}"
+		running_cmd=''
+		running_cmd_clean=''
+	else
+		error 1 "$(get_msg 'cmd_not_found')" "${cmd}"
+	fi
+}