This is the O3D source tree's initial commit to the Chromium tree. It

is not built or referenced at all by the chrome build yet, and doesn't 
yet build in it's new home.  We'll change that shortly.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17035 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 203 insertions, 0 deletions

diff --git a/o3d/import/cross/archive_request.h b/o3d/import/cross/archive_request.h
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+++ b/o3d/import/cross/archive_request.h
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+/*
+ * Copyright 2009, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+// This file contains the declaration of the ArchiveRequest class.
+
+#ifndef O3D_IMPORT_CROSS_ARCHIVE_REQUEST_H_
+#define O3D_IMPORT_CROSS_ARCHIVE_REQUEST_H_
+
+#include <algorithm>
+#include <string>
+
+#include "base/scoped_ptr.h"
+#include "core/cross/callback.h"
+#include "core/cross/object_base.h"
+#include "core/cross/pack.h"
+#include "import/cross/targz_processor.h"
+#include "import/cross/memory_buffer.h"
+#include "import/cross/memory_stream.h"
+#include "import/cross/raw_data.h"
+#include "plugin/cross/download_stream.h"
+
+namespace o3d {
+
+typedef Closure ArchiveRequestCallback;
+
+// An ArchiveRequest object is used to carry out an asynchronous request
+// for a file to be loaded.
+class ArchiveRequest : public ObjectBase, public ArchiveCallbackClient {
+ public:
+  enum ReadyState {  // These are copied from XMLHttpRequest.
+    STATE_INIT = 0,
+    STATE_OPEN = 1,
+    STATE_SENT = 2,
+    STATE_RECEIVING = 3,
+    STATE_LOADED = 4,
+  };
+
+  // A file by this name must be the first file in the archive otherwise
+  // the archive is rejected. This is a security measure so that O3D
+  // can not be used to open arbitrary .tgz files but only those files someone
+  // has specifically prepared for O3D. This file will not be passed to
+  // the onfileavailable callback.
+  static const char* O3D_MARKER;
+
+  // The contents of the O3D_MARKER file. Arguably the content should not matter
+  // but for the sake of completeness we define the content so there is no
+  // ambiguity.
+  static const char* O3D_MARKER_CONTENT;
+
+  // The size of the O3D_MARKER_CONTENT.
+  static const size_t O3D_MARKER_CONTENT_LENGTH;
+
+ public:
+  typedef SmartPointer<ArchiveRequest> Ref;
+
+  virtual ~ArchiveRequest();
+
+  static ArchiveRequest *Create(ServiceLocator* service_locator,
+                                Pack *pack);
+
+
+  // Streaming callbacks
+  virtual void NewStreamCallback(glue::DownloadStream *stream);
+  virtual int32 WriteReadyCallback(glue::DownloadStream *stream);
+  virtual int32 WriteCallback(glue::DownloadStream *stream,
+                              int32 offset,
+                              int32 length,
+                              void *data);
+
+  virtual void FinishedCallback(glue::DownloadStream *stream,
+                                bool success,
+                                const std::string &filename,
+                                const std::string &mime_type);
+
+  // ArchiveCallbackClient methods
+  virtual void ReceiveFileHeader(const ArchiveFileInfo &file_info);
+  virtual bool ReceiveFileData(MemoryReadStream *stream, int nbytes);
+
+  Pack *pack() {
+    return pack_.Get();  // Set at creation time and never changed.
+  }
+
+  ArchiveRequestCallback *onfileavailable() {
+    return onfileavailable_.get();
+  }
+  void set_onfileavailable(ArchiveRequestCallback *onfileavailable) {
+    onfileavailable_.reset(onfileavailable);
+  }
+
+  ArchiveRequestCallback *onreadystatechange() {
+    return onreadystatechange_.get();
+  }
+  void set_onreadystatechange(ArchiveRequestCallback *onreadystatechange) {
+    onreadystatechange_.reset(onreadystatechange);
+  }
+
+  // returns the "current" data object (used by the callback)
+  RawData *data() {
+    return raw_data_.Get();
+  }
+
+  const String& uri() {
+    return uri_;
+  }
+  void set_uri(const String& uri) {
+    uri_ = uri;
+  }
+
+  bool done() {
+    return done_;
+  }
+
+  bool success() {
+    return success_;
+  }
+  void set_success(bool success) {
+    success_ = success;
+    done_ = true;
+    pack_.Reset(); // Remove pack reference to allow garbage collection of pack.
+  }
+
+  const String& error() const {
+    return error_;
+  }
+  void set_error(const String& error) {
+    error_ = error;
+  }
+
+  int ready_state() {
+    return ready_state_;
+  }
+  void set_ready_state(int state) {
+    ready_state_ = state;
+  }
+
+  int stream_length() {
+    return stream_length_;
+  }
+
+  int bytes_received() {
+    return bytes_received_;
+  }
+
+ protected:
+  ArchiveRequest(ServiceLocator* service_locator, Pack *pack);
+
+  Pack::Ref pack_;
+  scoped_ptr<ArchiveRequestCallback> onreadystatechange_;
+  scoped_ptr<ArchiveRequestCallback> onfileavailable_;
+  String uri_;
+
+  // Request state
+  bool done_;  // Set after completion/failure to indicate success_ is valid.
+  bool success_;  // Set after completion/failure to indicate which it is.
+  int ready_state_;  // Like the XMLHttpRequest variable of the same name.
+  String error_;  // Set after completion on failure.
+
+  TarGzProcessor      *archive_processor_;
+  std::vector<RawData::Ref> raw_data_list_;
+  RawData::Ref        raw_data_;
+  MemoryBuffer<uint8> temp_buffer_;
+  MemoryWriteStream   file_memory_stream_;
+  String              current_filename_;
+
+  int                 stream_length_;   // total length of stream
+  int                 bytes_received_;  // bytes received so far
+
+  O3D_DECL_CLASS(ArchiveRequest, ObjectBase)
+  DISALLOW_IMPLICIT_CONSTRUCTORS(ArchiveRequest);
+};  // ArchiveRequest
+
+}  // namespace o3d
+
+#endif  // O3D_IMPORT_CROSS_ARCHIVE_REQUEST_H_