1 files changed, 101 insertions, 0 deletions
diff --git a/src/MultiFileAllocationIterator.cc b/src/MultiFileAllocationIterator.cc
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+++ b/src/MultiFileAllocationIterator.cc
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+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2006 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 --> */
+#include "MultiFileAllocationIterator.h"
+#include "MultiDiskAdaptor.h"
+#include "FileEntry.h"
+
+#define BUFSIZE 16*1024
+
+MultiFileAllocationIterator::MultiFileAllocationIterator(MultiDiskAdaptor* diskAdaptor):
+  _diskAdaptor(diskAdaptor),
+  _entries(diskAdaptor->getFileEntries()),
+  _currentEntry(0),
+  _offset(0)
+{}
+
+MultiFileAllocationIterator::~MultiFileAllocationIterator() {}
+
+void MultiFileAllocationIterator::prepareNextEntry()
+{
+  _currentEntry = 0;
+  _offset = 0;
+  while(!_entries.empty()) {
+    FileEntryHandle entry = _entries.front();
+    _entries.pop_front();
+    if(entry->isRequested()) {
+      _currentEntry = entry;
+      _offset = File(_diskAdaptor->getStoreDir()+"/"+
+		     _diskAdaptor->getTopDir()+"/"+
+		     _currentEntry->getPath()).size();
+      break;
+    }
+  }
+}
+
+
+void MultiFileAllocationIterator::allocateChunk()
+{
+  while(_currentEntry.isNull() || _currentEntry->getLength() <= _offset) {
+    prepareNextEntry();
+    if(_currentEntry.isNull()) {
+      break;
+    }
+  }
+  if(finished()) {
+    return;
+  }
+  int32_t bufSize = BUFSIZE;
+  unsigned char buf[BUFSIZE];
+  memset(buf, 0, bufSize);
+  
+  int32_t wsize = _offset+bufSize > _currentEntry->getLength() ?
+    _currentEntry->getLength()-_offset:bufSize;
+  _diskAdaptor->writeData(buf, wsize, _offset+_currentEntry->getOffset());
+  _offset += wsize;  
+}
+
+bool MultiFileAllocationIterator::finished()
+{
+  return _entries.empty() && _currentEntry.isNull();
+}
+
+int64_t MultiFileAllocationIterator::getTotalLength()
+{
+  if(_currentEntry.isNull()) {
+    return 0;
+  } else {
+    return _currentEntry->getLength();
+  }
+}