Add class MLKFileHandleStream.

1 files changed, 78 insertions, 0 deletions

diff --git a/MLKFileHandleStream.m b/MLKFileHandleStream.m
new file mode 100644
index 0000000..2376dc0
--- /dev/null
+++ b/MLKFileHandleStream.m
@@ -0,0 +1,78 @@
+/* -*- mode: objc; coding: utf-8 -*- */
+/* Toilet Lisp, a Common Lisp subset for the Étoilé runtime.
+ * Copyright (C) 2008  Matthias Andreas Benkard.
+ *
+ * This program 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.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import "MLKFileHandleStream.h"
+#import "runtime-compatibility.h"
+#import "util.h"
+
+#import <Foundation/NSData.h>
+#import <Foundation/NSException.h>
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+@implementation MLKFileHandleStream
+-(id) initWithFileHandle:(NSFileHandle *)fileHandle
+{
+  return [self initWithFileHandle:fileHandle
+               closeWhenDone:NO];
+}
+
+-(id) initWithFileHandle:(NSFileHandle *)fileHandle
+           closeWhenDone:(BOOL)closeWhenDone
+{
+  self = [super init];
+  LASSIGN (_fileHandle, fileHandle);
+  _closeWhenDone = closeWhenDone;
+  return self;
+}
+
+-(uint8_t) readOctet
+{
+  NSData *data;
+
+  data = [_fileHandle readDataOfLength:1];
+
+  if ([data length] == 0)
+    {
+      [NSException raise:@"MLKStreamError"
+                   format:@"Tried to read beyond end of file."];
+    }
+
+  return *(uint8_t*)[data bytes];
+}
+
+-(void) writeOctet:(uint8_t)octet
+{
+  [_fileHandle writeData:[NSData dataWithBytesNoCopy:&octet
+                                 length:1
+                                 freeWhenDone:NO]];
+}
+
+-(void) dealloc
+{
+  if (_closeWhenDone)
+    {
+      [_fileHandle close];
+    }
+  LDESTROY (_fileHandle);
+  [super dealloc];
+}
+@end