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/* Copyright 1986-1992 Emmet P. Gray.
* Copyright 1996,1997,1999,2002,2009 Alain Knaff.
* This file is part of mtools.
*
* Mtools 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.
*
* Mtools 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 Mtools. If not, see <http://www.gnu.org/licenses/>.
*/
#include "sysincludes.h"
#include "msdos.h"
#include "mtools.h"
#include "file.h"
/*
* Read the clusters given the beginning FAT entry. Returns 0 on success.
*/
int file_read(FILE *fp, Stream_t *Source, int textmode, int stripmode)
{
char buffer[16384];
int pos;
int ret;
if (!Source){
fprintf(stderr,"Couldn't open source file\n");
return -1;
}
pos = 0;
while(1){
ret = Source->Class->read(Source, buffer, pos, 16384);
if (ret < 0 ){
perror("file read");
return -1;
}
if ( ret == 0)
break;
if(!fwrite(buffer, 1, ret, fp)){
perror("write");
return -1;
}
pos += ret;
}
return 0;
}
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