Add net to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@14 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 94 insertions, 0 deletions

diff --git a/net/url_request/mime_sniffer_proxy.cc b/net/url_request/mime_sniffer_proxy.cc
new file mode 100644
index 0000000..2a0dec6
--- /dev/null
+++ b/net/url_request/mime_sniffer_proxy.cc
@@ -0,0 +1,94 @@
+// Copyright 2008, 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.
+
+#include "net/url_request/mime_sniffer_proxy.h"
+
+#include "net/base/mime_sniffer.h"
+
+MimeSnifferProxy::MimeSnifferProxy(URLRequest* request,
+                                   URLRequest::Delegate* delegate)
+    : request_(request), delegate_(delegate),
+      sniff_content_(false), error_(false) {
+  request->set_delegate(this);
+}
+
+void MimeSnifferProxy::OnResponseStarted(URLRequest* request) {
+  if (request->status().is_success()) {
+    request->GetMimeType(&mime_type_);
+    if (mime_util::ShouldSniffMimeType(request->url(), mime_type_)) {
+      // We need to read content before we know the mime type,
+      // so we don't call OnResponseStarted.
+      sniff_content_ = true;
+      if (request_->Read(buf_, sizeof(buf_), &bytes_read_) && bytes_read_) {
+        OnReadCompleted(request, bytes_read_);
+      } else if (!request_->status().is_io_pending()) {
+        error_ = true;
+        delegate_->OnResponseStarted(request);
+      } // Otherwise, IO pending.  Wait for OnReadCompleted.
+      return;
+    }
+  }
+  delegate_->OnResponseStarted(request);
+}
+
+bool MimeSnifferProxy::Read(char* buf, int max_bytes, int *bytes_read) {
+  if (sniff_content_) {
+    // This is the first call to Read() after we've sniffed content.
+    // Return our local buffer or the error we ran into.
+    sniff_content_ = false;  // We're done with sniffing for this request.
+
+    if (error_) {
+      *bytes_read = 0;
+      return false;
+    }
+
+    memcpy(buf, buf_, bytes_read_);
+    *bytes_read = bytes_read_;
+    return true;
+  }
+  return request_->Read(buf, max_bytes, bytes_read);
+}
+
+void MimeSnifferProxy::OnReadCompleted(URLRequest* request, int bytes_read) {
+  if (sniff_content_) {
+    // Our initial content-sniffing Read() has completed.
+    if (request->status().is_success() && bytes_read) {
+      std::string type_hint;
+      request_->GetMimeType(&type_hint);
+      bytes_read_ = bytes_read;
+      mime_util::SniffMimeType(buf_, bytes_read_,
+                               request_->url(), type_hint, &mime_type_);
+    } else {
+      error_ = true;
+    }
+    delegate_->OnResponseStarted(request_);
+    return;
+  }
+  delegate_->OnReadCompleted(request, bytes_read);
+}