mtools-4.0.18HEADmtools-4.0.18master

1 files changed, 55 insertions, 0 deletions

diff --git a/file_read.c b/file_read.c
new file mode 100644
index 0000000..60e336f
--- /dev/null
+++ b/file_read.c
@@ -0,0 +1,55 @@
+/*  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;
+}