Write pro-archman and command handling.

8 files changed, 260 insertions, 4 deletions

diff --git a/Makefile.in b/Makefile.in
index 21bada2..a52dd9e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -38,9 +38,9 @@ sh = @sh@
 
 pkglibcmddir = $(pkglibdir)/cmd
 
-#include $(srcdir)/src/local.mk
-#include $(srcdir)/lib/local.mk
-#include $(srcdir)/lib/cmd/local.mk
+include $(srcdir)/src/local.mk
+include $(srcdir)/lib/local.mk
+include $(srcdir)/lib/cmd/local.mk
 #include $(srcdir)/man/local.mk
 #include $(srcdir)/locale/local.mk
 #include $(srcdir)/tests/local.mk
@@ -82,7 +82,8 @@ script = \
 	s&@@PKGLIBCMDDIR@@&$(pkglibcmddir)&;\
 	s&@@DATADIR@@&$(datadir)&;\
 	s&@@LOCALEDIR@@&$(localedir)&;\
-	s&@@SH@@&$(sh)&;
+	s&@@SH@@&$(sh)&;\
+	s&@@PKGLIBCMD@@&$(pkglibcmd)&;
 
 .SUFFIXES:
 .SUFFIXES: .sh .sm .1in .1 .ms
diff --git a/lib/cmd.sh b/lib/cmd.sh
new file mode 100644
index 0000000..cff225b
--- /dev/null
+++ b/lib/cmd.sh
@@ -0,0 +1,95 @@
+# pro-archman
+# lib/cmd.sh
+# Command-related functions
+#
+# 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/>.
+
+[ "x${_CMD_SM+set}" = 'xset' ] && return 0
+_CMD_SM=1
+
+cmds=
+
+load_cmds()
+{
+	local cmd
+
+	for cmd in ${PKGLIBCMD}; do
+		cmd="${cmd##*/}"
+		cmd="${cmd%.sm}"
+		cmds="${cmds}${cmd}${LF}"
+		use "cmd/${cmd}"
+	done
+}
+
+cmd_summary()
+{
+	if [ "x${loading_cmd}" = 'x' ]; then
+		return 125
+	fi
+
+	eval "cmd_${loading_cmd}_summary='${1}'"
+}
+
+cmd_usage()
+{
+	if [ "x${loading_cmd}" = 'x' ]; then
+		return 125
+	fi
+
+	eval "cmd_${loading_cmd}_usage='${1}'"
+}
+
+print_cmd_summaries()
+{
+	local padding cmd summary
+
+	padding="$(printf '%24s' '')"
+	for cmd in ${PKGLIBCMD}; do
+		cmd="${cmd##*/}"
+		cmd="${cmd%.sm}"
+		if [ ${#cmd} -gt 20 ]; then
+			printf '  %s\n%24s' "${cmd}" ''
+		else
+			printf '  %-20s  ' "${cmd}"
+		fi
+		summary="$(eval printf \'%s\' \"\$\{cmd_"${cmd}"_summary\}\")"
+		printf '%s\n' "${summary}" | fold -s -w 56 | \
+			sed "2,\$s/^/${padding}/;"
+	done
+}
+
+is_cmd()
+{
+	local cmd
+
+	cmd="${1}"
+
+	[ "x$(printf '%s' "${cmds}" | grep "^${cmd}$")" = "x${cmd}" ]
+}
+
+run_cmd()
+{
+	local cmd
+
+	cmd="${1}"
+	shift
+
+	if is_cmd "${cmd}"; then
+		"cmd_${cmd}_main" "${@}"
+	else
+		printf 'Command "%s" not found\n' "${cmd}"
+	fi
+}
diff --git a/lib/cmd/help.sh b/lib/cmd/help.sh
new file mode 100644
index 0000000..129cb14
--- /dev/null
+++ b/lib/cmd/help.sh
@@ -0,0 +1,33 @@
+# pro-archman
+# 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_summary 'print this help message'
+cmd_usage '[<command>]'
+
+cmd_help_main()
+{
+	if [ ${#} -eq 1 ]; then
+		if is_cmd "${1}"; then
+			return 0
+		fi
+	fi
+
+	printf 'Usage: %s <command>\n\nWhere <command> is one of:\n' "${0}"
+	print_cmd_summaries
+}
diff --git a/lib/cmd/include.sh b/lib/cmd/include.sh
new file mode 100644
index 0000000..eeb6ef5
--- /dev/null
+++ b/lib/cmd/include.sh
@@ -0,0 +1,26 @@
+# pro-archman
+# lib/cmd/include.sh
+# "include" 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_summary 'include packages described in changes files'
+cmd_usage '<changes> ...'
+
+cmd_include_main()
+{
+	printf 'Not implemented\n'
+}
diff --git a/lib/cmd/local.mk b/lib/cmd/local.mk
new file mode 100644
index 0000000..6892594
--- /dev/null
+++ b/lib/cmd/local.mk
@@ -0,0 +1,6 @@
+# pro-archman
+# lib/cmd/local.mk
+
+pkglibcmd_srcs = \
+	lib/cmd/help.sh \
+	lib/cmd/include.sh
diff --git a/lib/local.mk b/lib/local.mk
new file mode 100644
index 0000000..e135474
--- /dev/null
+++ b/lib/local.mk
@@ -0,0 +1,5 @@
+# pro-archman
+# lib/local.mk
+
+pkglib_srcs = \
+	lib/cmd.sh
diff --git a/src/local.mk b/src/local.mk
new file mode 100644
index 0000000..c42c66e
--- /dev/null
+++ b/src/local.mk
@@ -0,0 +1,5 @@
+# pro-archman
+# src/local.mk
+
+bin_srcs = \
+	src/pro-archman.sh
diff --git a/src/pro-archman.sh b/src/pro-archman.sh
new file mode 100644
index 0000000..a3824cf
--- /dev/null
+++ b/src/pro-archman.sh
@@ -0,0 +1,85 @@
+#!@@SH@@
+#
+# pro-archman
+# src/archive-manager.sh
+# Main program file
+#
+# 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/>.
+
+set -u
+
+# Constant global variables
+PKGLIBDIR='@@PKGLIBDIR@@'
+PKGLIBCMDDIR='@@PKGLIBCMDDIR@@'
+PKGLIBCMD='@@PKGLIBCMD@@'
+LF='
+'
+
+# Global variables
+loading_cmd=
+
+# use() must be defined inline so it can be used to load other modules.
+use()
+{
+	local module default_dir lib_subdir dir
+
+	module="${1}"
+
+	if [ "x${module%/*}" = "x${module}" ]; then
+		default_dir="${PKGLIBDIR}"
+		lib_subdir=''
+	else
+		case "${module%/*}" in
+			'cmd')
+				loading_cmd="$(printf '%s' "${module##*/}" | \
+					tr '[A-Z]' '[a-z]' | \
+					tr -C '[a-z0-9_]' '_')"
+				default_dir="${PKGLIBCMDDIR}"
+				lib_subdir='cmd'
+				;;
+		esac
+	fi
+
+	if [ "${ARCHMAN_LIBDIR+set}" = 'set' ]; then
+		dir="${ARCHMAN_LIBDIR:-.}/${lib_subdir}"
+	else
+		dir="${default_dir}"
+	fi
+
+	if [ -f "${dir}/${module##*/}.sm" ]; then
+		. "${dir}/${module##*/}.sm"
+	else
+		printf 'Failed to load module "%s": %s\n' \
+			"${module}" 'no such file or directory' >&2
+		exit 2
+	fi
+}
+
+use cmd
+
+main()
+{
+	load_cmds
+
+	if [ ${#} -lt 1 ]; then
+		cmd_help_main >&2
+		exit 1
+	fi
+
+	run_cmd "${@}"
+}
+
+main "${@}"