From d734ff7d298d0abee4e6f75f94afd2d33e0c8fc6 Mon Sep 17 00:00:00 2001
From: Tatsuhiro Tsujikawa <tatsuhiro.t@gmail.com>
Date: Sun, 12 Aug 2012 16:52:53 +0900
Subject: Added new file allocation method called 'trunc'

--file-allocation option can now take new value 'trunc'. 'trunc' uses
ftruncate() system call or platform-specific counterpart to truncate a
file to a specified length.
---
 src/TruncFileAllocationIterator.h | 66 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 src/TruncFileAllocationIterator.h

(limited to 'src/TruncFileAllocationIterator.h')

diff --git a/src/TruncFileAllocationIterator.h b/src/TruncFileAllocationIterator.h
new file mode 100644
index 00000000..79c34d88
--- /dev/null
+++ b/src/TruncFileAllocationIterator.h
@@ -0,0 +1,66 @@
+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2012 Tatsuhiro Tsujikawa
+ *
+ * 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 2 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of portions of this program with the
+ * OpenSSL library under certain conditions as described in each
+ * individual source file, and distribute linked combinations
+ * including the two.
+ * You must obey the GNU General Public License in all respects
+ * for all of the code used other than OpenSSL.  If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so.  If you
+ * do not wish to do so, delete this exception statement from your
+ * version.  If you delete this exception statement from all source
+ * files in the program, then also delete it here.
+ */
+/* copyright --> */
+#ifndef D_TRUNC_FILE_ALLOCATION_ITERATOR_H
+#define D_TRUNC_FILE_ALLOCATION_ITERATOR_H
+
+#include "FileAllocationIterator.h"
+#include "BinaryStream.h"
+
+namespace aria2 {
+
+// Use ftruncate() system call or platform-specific counterpart to set
+// file length. This allocator may not allocate file space, it just
+// changes file length information.
+class TruncFileAllocationIterator:public FileAllocationIterator {
+private:
+  BinaryStream* stream_;
+  int64_t offset_;
+  int64_t totalLength_;
+public:
+  TruncFileAllocationIterator(BinaryStream* stream, int64_t offset,
+                              int64_t totalLength);
+
+  virtual void allocateChunk();
+
+  virtual bool finished();
+
+  virtual int64_t getCurrentLength();
+
+  virtual int64_t getTotalLength();
+};
+
+} // namespace aria2
+
+#endif // D_TRUNC_FILE_ALLOCATION_ITERATOR_H
-- 
cgit