--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lwar/main.c	Wed Jan 19 22:27:17 2011 -0700
@@ -0,0 +1,206 @@
+/*
+main.c
+Copyright © 2009 William Astle
+
+This file is part of LWAR.
+
+LWAR 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/>.
+
+
+Implements the program startup code
+
+*/
+
+#include <argp.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "lwar.h"
+
+// command line option handling
+const char *argp_program_version = "LWAR from " PACKAGE_STRING;
+const char *argp_program_bug_address = PACKAGE_BUGREPORT;
+char *program_name;
+
+static error_t parse_opts(int key, char *arg, struct argp_state *state)
+{
+	switch (key)
+	{
+	case 'd':
+		// debug
+		debug_level++;
+		break;
+	
+	case 'a':
+		// add members
+		operation = LWAR_OP_ADD;
+		break;
+	
+	case 'c':
+		// create archive
+		operation = LWAR_OP_CREATE;
+		break;
+	
+	case 'm':
+		mergeflag = 1;
+		break;
+
+	case 'r':
+		// replace members
+		operation = LWAR_OP_REPLACE;
+		break;
+	
+	case 'l':
+		// list members
+		operation = LWAR_OP_LIST;
+		break;
+	
+	case 'x':
+		// extract members
+		operation = LWAR_OP_EXTRACT;
+		break;
+
+	case ARGP_KEY_ARG:
+		if (archive_file)
+		{
+			// add archive member to list
+			add_file_name(arg);
+		}
+		else
+			archive_file = arg;
+		break;
+		
+	default:
+		return ARGP_ERR_UNKNOWN;
+	}
+	return 0;
+}
+
+static struct argp_option options[] =
+{
+	{ "replace",	'r',	0,		0,
+				"Add or replace archive members" },
+	{ "extract",	'x',	0,		0,
+				"Extract members from the archive" },
+	{ "add",		'a',	0,		0,
+				"Add members to the archive" },
+	{ "list",		'l',	0,		0,
+				"List the contents of the archive" },
+	{ "create",		'c',	0,		0,
+				"Create new archive (or truncate existing one)" },
+	{ "merge",		'm',	0,		0,
+				"Add the contents of archive arguments instead of the archives themselves" },
+	{ "debug",		'd',	0,		0,
+				"Set debug mode"},
+	{ 0 }
+};
+
+static struct argp argp =
+{
+	options,
+	parse_opts,
+	"<archive> [<file> ...]",
+	"LWAR, a library file manager for LWLINK"
+};
+
+extern void do_list(void);
+extern void do_add(void);
+extern void do_remove(void);
+extern void do_replace(void);
+extern void do_extract(void);
+
+// main function; parse command line, set up assembler state, and run the
+// assembler on the first file
+int main(int argc, char **argv)
+{
+	program_name = argv[0];
+	argp_parse(&argp, argc, argv, 0, 0, NULL);
+	if (archive_file == NULL)
+	{
+		fprintf(stderr, "You must specify an archive file.\n");
+		exit(1);
+	}
+
+	if (operation == 0)
+	{
+		fprintf(stderr, "You must specify an operation.\n");
+		exit(1);
+	}
+
+	if (operation == LWAR_OP_LIST || operation == LWAR_OP_REMOVE || operation == LWAR_OP_EXTRACT)
+	{
+		struct stat stbuf;
+		// make sure the archive exists
+		if (stat(archive_file, &stbuf) < 0)
+		{
+			fprintf(stderr, "Cannot open archive file %s:\n", archive_file);
+			perror("");
+			exit(2);
+		}
+	}
+	if (operation == LWAR_OP_CREATE)
+	{
+		struct stat stbuf;
+		// check if the archive exists
+		if (stat(archive_file, &stbuf) < 0)
+		{
+			if (errno != ENOENT)
+			{
+				fprintf(stderr, "Cannot create archive file %s:\n", archive_file);
+				perror("");
+				exit(2);
+			}
+		}
+		else
+		{
+			if (unlink(archive_file) < 0)
+			{
+				fprintf(stderr, "Cannot create archive file %s:\n", archive_file);
+				perror("");
+				exit(2);
+			}
+				
+		}
+	}
+	
+	switch (operation)
+	{
+	case LWAR_OP_LIST:
+		do_list();
+		break;
+	
+	case LWAR_OP_ADD:
+	case LWAR_OP_CREATE:
+		do_add();
+		break;
+	
+	case LWAR_OP_REMOVE:
+		do_remove();
+		break;
+	
+	case LWAR_OP_REPLACE:
+		do_replace();
+		break;
+	
+	case LWAR_OP_EXTRACT:
+		do_extract();
+		break;
+	}
+
+	exit(0);
+}