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56 lines
1.4 KiB
56 lines
1.4 KiB
/* Copyright 1986-1992 Emmet P. Gray.
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* Copyright 1996,1997,1999,2002,2009 Alain Knaff.
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* This file is part of mtools.
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*
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* Mtools is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Mtools is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Mtools. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "sysincludes.h"
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#include "msdos.h"
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#include "mtools.h"
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#include "file.h"
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/*
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* Read the clusters given the beginning FAT entry. Returns 0 on success.
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*/
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int file_read(FILE *fp, Stream_t *Source, int textmode, int stripmode)
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{
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char buffer[16384];
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int pos;
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int ret;
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if (!Source){
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fprintf(stderr,"Couldn't open source file\n");
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return -1;
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}
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pos = 0;
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while(1){
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ret = Source->Class->read(Source, buffer, pos, 16384);
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if (ret < 0 ){
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perror("file read");
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return -1;
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}
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if ( ret == 0)
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break;
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if(!fwrite(buffer, 1, ret, fp)){
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perror("write");
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return -1;
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}
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pos += ret;
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}
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return 0;
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}
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