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/*
Copyright (C) 2005, 2006, 2008, 2009, 2010, 2011
Rocky Bernstein <rocky@gnu.org>
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/>.
*/
/* Simple program to show using libudf to extract a file.
This program can be compiled with either a C or C++ compiler. In
the distribution we prefer C++ just to make sure we haven't broken
things on the C++ side.
*/
/* config.h has to come first else _FILE_OFFSET_BITS are redefined in
say opensolaris. */
#ifdef HAVE_CONFIG_H
# include "config.h"
# define __CDIO_CONFIG_H__ 1
#endif
/* This is the UDF image. */
#define UDF_IMAGE_PATH "../"
#define UDF_IMAGE "../test/udf102.iso"
#define UDF_FILENAME "/COPYING"
#define LOCAL_FILENAME "copying"
#include <sys/types.h>
#include <cdio/cdio.h>
#include <cdio/udf.h>
#include <stdio.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#define CEILING(x, y) ((x+(y-1))/y)
#define udf_PATH_DELIMITERS "/\\"
int
main(int argc, const char *argv[])
{
udf_t *p_udf;
FILE *p_outfd;
char const *psz_udf_image;
char const *psz_udf_fname;
char const *psz_local_fname;
if (argc > 1)
psz_udf_image = argv[1];
else
psz_udf_image = UDF_IMAGE;
if (argc > 2)
psz_udf_fname = argv[2];
else
psz_udf_fname = UDF_FILENAME;
if (argc > 3)
psz_local_fname = argv[3];
else
psz_local_fname = LOCAL_FILENAME;
p_udf = udf_open (psz_udf_image);
if (NULL == p_udf) {
fprintf(stderr, "Sorry, couldn't open %s as something using UDF\n",
psz_udf_image);
return 1;
} else {
udf_dirent_t *p_udf_root = udf_get_root(p_udf, true, 0);
udf_dirent_t *p_udf_file = NULL;
if (NULL == p_udf_root) {
fprintf(stderr, "Sorry, couldn't find / in %s\n",
psz_udf_image);
return 1;
}
p_udf_file = udf_fopen(p_udf_root, psz_udf_fname);
if (!p_udf_file) {
fprintf(stderr, "Sorry, couldn't find %s in %s\n",
psz_udf_fname, psz_udf_image);
return 2;
}
if (!(p_outfd = fopen (psz_local_fname, "wb")))
{
perror ("fopen()");
return 3;
}
{
long unsigned int i_file_length = udf_get_file_length(p_udf_file);
const unsigned int i_blocks = CEILING(i_file_length, UDF_BLOCKSIZE);
unsigned int i;
for (i = 0; i < i_blocks ; i++) {
char buf[UDF_BLOCKSIZE] = {'\0',};
ssize_t i_read = udf_read_block(p_udf_file, buf, 1);
if ( i_read < 0 ) {
fprintf(stderr, "Error reading UDF file %s at block %u\n",
psz_local_fname, i);
return 4;
}
fwrite (buf, i_read, 1, p_outfd);
if (ferror (p_outfd)) {
perror ("fwrite()");
return 5;
}
}
fflush (p_outfd);
udf_dirent_free(p_udf_root);
udf_close(p_udf);
/* Make sure the file size has the exact same byte size. Without the
truncate below, the file will a multiple of UDF_BLOCKSIZE.
*/
if (ftruncate (fileno (p_outfd), i_file_length))
perror ("ftruncate()");
printf("Extraction of file '%s' from %s successful.\n",
psz_local_fname, psz_udf_image);
return 0;
}
}
}
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