libisofs/demo/iso_cat.c
2008-01-19 17:41:01 +01:00

100 lines
2.4 KiB
C

/*
* Copyright (c) 2007 Vreixo Formoso
*
* This file is part of the libisofs project; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See COPYING file for details.
*/
#include <stdio.h>
#include <stdlib.h>
#include "libisofs.h"
/*
* Little test program that extracts a file form a given ISO image.
* Outputs file contents to stdout!
*/
int main(int argc, char **argv)
{
int res;
IsoFilesystem *fs;
IsoFileSource *file;
struct stat info;
IsoDataSource *src;
struct iso_read_opts opts = {
0, /* block */
0, /* norock */
0, /* nojoliet */
0, /* noiso1999 */
0, /* preferjoliet */
0, /* uid; */
0, /* gid; */
0, /* mode */
"UTF-8" /* input_charset */
};
if (argc != 3) {
fprintf(stderr, "Usage: isocat /path/to/image /path/to/file\n");
return 1;
}
res = iso_init();
if (res < 0) {
fprintf(stderr, "Can't init libisofs\n");
return 1;
}
res = iso_data_source_new_from_file(argv[1], &src);
if (res < 0) {
fprintf(stderr, "Error creating data source\n");
return 1;
}
res = iso_image_filesystem_new(src, &opts, 1, &fs);
if (res < 0) {
fprintf(stderr, "Error creating filesystem\n");
return 1;
}
res = fs->get_by_path(fs, argv[2], &file);
if (res < 0) {
fprintf(stderr, "Can't get file, err = %d\n", res);
return 1;
}
res = iso_file_source_lstat(file, &info);
if (res < 0) {
fprintf(stderr, "Can't stat file, err = %d\n", res);
return 1;
}
if (S_ISDIR(info.st_mode)) {
fprintf(stderr, "Path refers to a directory!!\n");
return 1;
} else {
char buf[1024];
res = iso_file_source_open(file);
if (res < 0) {
fprintf(stderr, "Can't open file, err = %d\n", res);
return 1;
}
while ((res = iso_file_source_read(file, buf, 1024)) > 0) {
fwrite(buf, 1, res, stdout);
}
if (res < 0) {
fprintf(stderr, "Error reading, err = %d\n", res);
return 1;
}
iso_file_source_close(file);
}
iso_file_source_unref(file);
iso_filesystem_unref(fs);
iso_data_source_unref(src);
iso_finish();
return 0;
}