1 files changed, 73 insertions, 0 deletions
diff --git a/copyfile.c b/copyfile.c
new file mode 100644
index 0000000..282c649
--- /dev/null
+++ b/copyfile.c
@@ -0,0 +1,73 @@
+/*  Copyright 1996-1999,2001,2002,2009 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"
+#include "llong.h"
+
+/*
+ * Copy the data from source to target
+ */
+
+int copyfile(Stream_t *Source, Stream_t *Target)
+{
+	char buffer[8*16384];
+	mt_off_t pos;
+	int ret, retw;
+/*	size_t len;*/
+	mt_size_t mt_len;
+
+	if (!Source){
+		fprintf(stderr,"Couldn't open source file\n");
+		return -1;
+	}
+
+	if (!Target){
+		fprintf(stderr,"Couldn't open target file\n");
+		return -1;
+	}
+
+	pos = 0;
+	GET_DATA(Source, 0, &mt_len, 0, 0);
+	while(1){
+		ret = READS(Source, buffer, (mt_off_t) pos, 8*16384);
+		if (ret < 0 ){
+			perror("file read");
+			return -1;
+		}
+		if(!ret)
+			break;
+		if(got_signal)
+			return -1;
+		if (ret == 0)
+			break;
+		if ((retw = force_write(Target, buffer, (mt_off_t) pos, ret)) != ret){
+			if(retw < 0 )
+				perror("write in copy");
+			else
+				fprintf(stderr,
+					"Short write %d instead of %d\n", retw,
+					ret);
+			if(errno == ENOSPC)
+				got_signal = 1;
+			return ret;
+		}
+		pos += ret;
+	}
+	return 0;
+}