Initial commit.

1 files changed, 112 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..d34f00e
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,112 @@
+/*
+Copyright (C) 2016  Paweł Redman
+
+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, write to the Free Software Foundation,
+Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
+*/
+
+#include "common.h"
+#include <unistd.h>
+
+#define error(fmt, ...) fprintf(stderr, PROGRAM_NAME ": " fmt, ##__VA_ARGS__)
+
+void print_version(void)
+{
+	puts(PROGRAM_NAME " " PROGRAM_VERSION ", Copyright (C) 2016  Paweł Redman\n"
+	     PROGRAM_NAME " comes with ABSOLUTELY NO WARRANTY.\n"
+	     "This is free software, and you are welcome to redistribute it\n"
+             "under certain conditions. See the file COPYING.");
+}
+
+void print_usage(void)
+{
+	puts(PROGRAM_NAME " " PROGRAM_VERSION "\n"
+	     "usage: " PROGRAM_NAME " -o outfile infile...\n"
+	     "    or " PROGRAM_NAME " -v\n"
+	     "    or " PROGRAM_NAME " -h");
+}
+
+typedef struct {
+	char *path;
+	elist_header_t list;
+} input_file_t;
+
+int main(int argc, char **argv)
+{
+	int rv = 1, i;
+	input_file_t *inputs = NULL, *input, *next;
+	char *output = NULL;
+
+	for (i = 1; i < argc; i++) {
+		if (!strcmp(argv[i], "-v")) {
+			print_version();
+			rv = 0;
+			goto out;
+		} else if (!strcmp(argv[i], "-h")) {
+			print_usage();
+			rv = 0;
+			goto out;
+		} else if (!strcmp(argv[i], "-o")) {
+			if (i + 1 >= argc) {
+				error("-o needs an argument\n");
+				goto out;
+			}
+
+			if (output) {
+				error("-o can be specified only once\n");
+				goto out;
+			}
+
+			output = argv[i + 1];
+			i++;
+		} else {
+			input = malloc(sizeof(input_file_t));
+			if (!input) {
+				error("out of memory\n");
+				goto out;
+			}
+
+			input->path = argv[i];
+			elist_append(&inputs, input, list);
+		}
+	}
+
+	if (!inputs) {
+		error("no input files specified, try '" PROGRAM_NAME " -h'\n");
+		goto out;
+	}
+
+	if (!output) {
+		error("no output file specified, try '" PROGRAM_NAME " -h'\n");
+		goto out;
+	}
+
+	elist_for (input, inputs, list)
+		if (mapcat_load(input->path))
+			goto out;
+
+	if (mapcat_save(output))
+		goto out;
+
+	rv = 0;
+out:
+	mapcat_free();
+
+	for (input = inputs; input; input = next) {
+		next = elist_next(input, list);
+		free(input);
+	}
+
+	return rv;
+}