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-rw-r--r--file_read.c55
1 files changed, 55 insertions, 0 deletions
diff --git a/file_read.c b/file_read.c
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+++ b/file_read.c
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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;
+}