1/*  Copyright 1986-1992 Emmet P. Gray.
2 *  Copyright 1996,1997,1999,2002,2009 Alain Knaff.
3 *  This file is part of mtools.
4 *
5 *  Mtools 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 3 of the License, or
8 *  (at your option) any later version.
9 *
10 *  Mtools 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 *
15 *  You should have received a copy of the GNU General Public License
16 *  along with Mtools.  If not, see <http://www.gnu.org/licenses/>.
17 */
18
19#include "sysincludes.h"
20#include "msdos.h"
21#include "mtools.h"
22#include "file.h"
23
24/*
25 * Read the clusters given the beginning FAT entry.  Returns 0 on success.
26 */
27
28int file_read(FILE *fp, Stream_t *Source, int textmode, int stripmode)
29{
30	char buffer[16384];
31	int pos;
32	int ret;
33
34	if (!Source){
35		fprintf(stderr,"Couldn't open source file\n");
36		return -1;
37	}
38
39	pos = 0;
40	while(1){
41		ret = Source->Class->read(Source, buffer, pos, 16384);
42		if (ret < 0 ){
43			perror("file read");
44			return -1;
45		}
46		if ( ret == 0)
47			break;
48		if(!fwrite(buffer, 1, ret, fp)){
49			perror("write");
50			return -1;
51		}
52		pos += ret;
53	}
54	return 0;
55}
56