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/*
 * plutil.C
 * source for plist convertion tool
 *
 * Copyright (c) 2008 Zach C. All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 
 */


#include "plist/plist.h"
#include "plutil.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>

int main(int argc, char *argv[])
{
	struct stat *filestats = (struct stat *) malloc(sizeof(struct stat));
	Options *options = parse_arguments(argc, argv);

	if (!options) {
		print_usage();
		return 0;
	}

	//read input file
	FILE *iplist = fopen(options->in_file, "r");
	if (!iplist)
		return 1;
	stat(options->in_file, filestats);
	char *plist_entire = (char *) malloc(sizeof(char) * (filestats->st_size + 1));
	fread(plist_entire, sizeof(char), filestats->st_size, iplist);
	fclose(iplist);


	//convert one format to another
	plist_t root_node = NULL;
	char *plist_out = NULL;
	int size = 0;

	if (memcmp(plist_entire, "bplist00", 8) == 0) {
		plist_from_bin(plist_entire, filestats->st_size, &root_node);
		plist_to_xml(root_node, &plist_out, &size);
	} else {
		plist_from_xml(plist_entire, filestats->st_size, &root_node);
		plist_to_bin(root_node, &plist_out, &size);
	}

	if (plist_out) {
		if (options->out_file != NULL) {
			FILE *oplist = fopen(options->out_file, "wb");
			if (!oplist)
				return 1;
			fwrite(plist_out, size, sizeof(char), oplist);
			fclose(oplist);
		}
		//if no output file specified, write to stdout
		else
			fwrite(plist_out, size, sizeof(char), stdout);
	} else
		printf("ERROR\n");
	return 0;
}

Options *parse_arguments(int argc, char *argv[])
{
	int i = 0;

	Options *options = (Options *) malloc(sizeof(Options));
	memset(options, 0, sizeof(Options));

	for (i = 1; i < argc; i++) {
		if (!strcmp(argv[i], "--infile") || !strcmp(argv[i], "-i")) {
			if ((i + 1) == argc) {
				free(options);
				return NULL;
			}
			options->in_file = argv[i + 1];
			i++;
			continue;
		}

		if (!strcmp(argv[i], "--outfile") || !strcmp(argv[i], "-o")) {
			if ((i + 1) == argc) {
				free(options);
				return NULL;
			}
			options->out_file = argv[i + 1];
			i++;
			continue;
		}

		if (!strcmp(argv[i], "--debug") || !strcmp(argv[i], "-d") || !strcmp(argv[i], "-v")) {
			options->debug = 1;
		}

		if (!strcmp(argv[i], "--help") || !strcmp(argv[i], "-h")) {
			free(options);
			return NULL;
		}
	}

	if (!options->in_file /*|| !options->out_file */ ) {
		free(options);
		return NULL;
	}

	return options;
}

void print_usage()
{
	printf("Usage: plistutil -i|--infile in_file.plist -o|--outfile out_file.plist [--debug]\n");
	printf("\n");
	printf("\t-i or --infile: The file to read in.\n");
	printf("\t-o or --outfile: The file to convert to.\n");
	printf("\t-d, -v or --debug: Provide extended debug information.\n\n");
}