diff options
Diffstat (limited to 'src/input/vcd/libcdio/_cdio_stdio.c')
| -rw-r--r-- | src/input/vcd/libcdio/_cdio_stdio.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/src/input/vcd/libcdio/_cdio_stdio.c b/src/input/vcd/libcdio/_cdio_stdio.c deleted file mode 100644 index 0083b2194..000000000 --- a/src/input/vcd/libcdio/_cdio_stdio.c +++ /dev/null @@ -1,222 +0,0 @@ -/* - $Id: _cdio_stdio.c,v 1.2 2004/04/11 12:20:31 miguelfreitas Exp $ - - Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org> - Copyright (C) 2003, 2004 Rocky Bernstein <rocky@panix.com> - - 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 2 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -*/ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <sys/stat.h> -#include <errno.h> - -#include <cdio/logging.h> -#include <cdio/util.h> -#include "_cdio_stream.h" -#include "_cdio_stdio.h" - -static const char _rcsid[] = "$Id: _cdio_stdio.c,v 1.2 2004/04/11 12:20:31 miguelfreitas Exp $"; - -#define CDIO_STDIO_BUFSIZE (128*1024) - -typedef struct { - char *pathname; - FILE *fd; - char *fd_buf; - off_t st_size; /* used only for source */ -} _UserData; - -static int -_stdio_open (void *user_data) -{ - _UserData *const ud = user_data; - - if ((ud->fd = fopen (ud->pathname, "rb"))) - { - ud->fd_buf = _cdio_malloc (CDIO_STDIO_BUFSIZE); - setvbuf (ud->fd, ud->fd_buf, _IOFBF, CDIO_STDIO_BUFSIZE); - } - - return (ud->fd == NULL); -} - -static int -_stdio_close(void *user_data) -{ - _UserData *const ud = user_data; - - if (fclose (ud->fd)) - cdio_error ("fclose (): %s", strerror (errno)); - - ud->fd = NULL; - - free (ud->fd_buf); - ud->fd_buf = NULL; - - return 0; -} - -static void -_stdio_free(void *user_data) -{ - _UserData *const ud = user_data; - - if (ud->pathname) - free(ud->pathname); - - if (ud->fd) /* should be NULL anyway... */ - _stdio_close(user_data); - - free(ud); -} - -/*! - Like fseek(3) and in fact may be the same. - - This function sets the file position indicator for the stream - pointed to by stream. The new position, measured in bytes, is obtained - by adding offset bytes to the position specified by whence. If whence - is set to SEEK_SET, SEEK_CUR, or SEEK_END, the offset is relative to - the start of the file, the current position indicator, or end-of-file, - respectively. A successful call to the fseek function clears the end- - of-file indicator for the stream and undoes any effects of the - ungetc(3) function on the same stream. - - RETURN VALUE - Upon successful completion, return 0, - Otherwise, -1 is returned and the global variable errno is set to indi- - cate the error. -*/ -static long -_stdio_seek(void *user_data, long offset, int whence) -{ - _UserData *const ud = user_data; - - if ( (offset=fseek (ud->fd, offset, whence)) ) { - cdio_error ("fseek (): %s", strerror (errno)); - } - - return offset; -} - -static long int -_stdio_stat(void *user_data) -{ - const _UserData *const ud = user_data; - - return ud->st_size; -} - -/*! - Like fread(3) and in fact is about the same. - - DESCRIPTION: - The function fread reads nmemb elements of data, each size bytes long, - from the stream pointed to by stream, storing them at the location - given by ptr. - - RETURN VALUE: - return the number of items successfully read or written (i.e., - not the number of characters). If an error occurs, or the - end-of-file is reached, the return value is a short item count - (or zero). - - We do not distinguish between end-of-file and error, and callers - must use feof(3) and ferror(3) to determine which occurred. - */ -static long -_stdio_read(void *user_data, void *buf, long int count) -{ - _UserData *const ud = user_data; - long read; - - read = fread(buf, 1, count, ud->fd); - - if (read != count) - { /* fixme -- ferror/feof */ - if (feof (ud->fd)) - { - cdio_debug ("fread (): EOF encountered"); - clearerr (ud->fd); - } - else if (ferror (ud->fd)) - { - cdio_error ("fread (): %s", strerror (errno)); - clearerr (ud->fd); - } - else - cdio_debug ("fread (): short read and no EOF?!?"); - } - - return read; -} - -/*! - Deallocate resources assocaited with obj. After this obj is unusable. -*/ -void -cdio_stdio_destroy(CdioDataSource *obj) -{ - cdio_stream_destroy(obj); -} - -CdioDataSource* -cdio_stdio_new(const char pathname[]) -{ - CdioDataSource *new_obj = NULL; - cdio_stream_io_functions funcs = { 0, }; - _UserData *ud = NULL; - struct stat statbuf; - - if (stat (pathname, &statbuf) == -1) - { - cdio_warn ("could not retrieve file info for `%s': %s", - pathname, strerror (errno)); - return NULL; - } - - ud = _cdio_malloc (sizeof (_UserData)); - - ud->pathname = strdup(pathname); - ud->st_size = statbuf.st_size; /* let's hope it doesn't change... */ - - funcs.open = _stdio_open; - funcs.seek = _stdio_seek; - funcs.stat = _stdio_stat; - funcs.read = _stdio_read; - funcs.close = _stdio_close; - funcs.free = _stdio_free; - - new_obj = cdio_stream_new(ud, &funcs); - - return new_obj; -} - - -/* - * Local variables: - * c-file-style: "gnu" - * tab-width: 8 - * indent-tabs-mode: nil - * End: - */ |