Initial revision 6759
[qball-mpd.git] / src / .svn / text-base / inputStream_file.c.svn-base
blob389aaad01fd45e59ea47f851f6b74796999d381d
1 /* the Music Player Daemon (MPD)
2  * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
3  * This project's homepage is: http://www.musicpd.org
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write to the Free Software
16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
17  */
19 #include "inputStream_file.h"
21 #include "log.h"
23 #include <stdio.h>
24 #include <string.h>
25 #include <sys/types.h>
26 #include <unistd.h>
27 #include <errno.h>
28 #define _XOPEN_SOURCE 600
29 #include <fcntl.h>
31 void inputStream_initFile(void)
35 int inputStream_fileOpen(InputStream * inStream, char *filename)
37         FILE *fp;
39         fp = fopen(filename, "r");
40         if (!fp) {
41                 inStream->error = errno;
42                 return -1;
43         }
45         inStream->seekable = 1;
47         fseek(fp, 0, SEEK_END);
48         inStream->size = ftell(fp);
49         fseek(fp, 0, SEEK_SET);
51 #ifdef POSIX_FADV_SEQUENTIAL
52         posix_fadvise(fileno(fp), (off_t)0, inStream->size, POSIX_FADV_SEQUENTIAL);
53 #endif
55         inStream->data = fp;
56         inStream->seekFunc = inputStream_fileSeek;
57         inStream->closeFunc = inputStream_fileClose;
58         inStream->readFunc = inputStream_fileRead;
59         inStream->atEOFFunc = inputStream_fileAtEOF;
60         inStream->bufferFunc = inputStream_fileBuffer;
62         return 0;
65 int inputStream_fileSeek(InputStream * inStream, long offset, int whence)
67         if (fseek((FILE *) inStream->data, offset, whence) == 0) {
68                 inStream->offset = ftell((FILE *) inStream->data);
69         } else {
70                 inStream->error = errno;
71                 return -1;
72         }
74         return 0;
77 size_t inputStream_fileRead(InputStream * inStream, void *ptr, size_t size,
78                             size_t nmemb)
80         size_t readSize;
82         readSize = fread(ptr, size, nmemb, (FILE *) inStream->data);
83         if (readSize <= 0 && ferror((FILE *) inStream->data)) {
84                 inStream->error = errno;
85                 DEBUG("inputStream_fileRead: error reading: %s\n",
86                       strerror(inStream->error));
87         }
89         inStream->offset = ftell((FILE *) inStream->data);
91         return readSize;
94 int inputStream_fileClose(InputStream * inStream)
96         if (fclose((FILE *) inStream->data) < 0) {
97                 inStream->error = errno;
98                 return -1;
99         }
101         return 0;
104 int inputStream_fileAtEOF(InputStream * inStream)
106         if (feof((FILE *) inStream->data))
107                 return 1;
109         if (ferror((FILE *) inStream->data) && inStream->error != EINTR) {
110                 return 1;
111         }
113         return 0;
116 int inputStream_fileBuffer(InputStream * inStream)
118         return 0;