Add net to the repository.

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

1 files changed, 107 insertions, 0 deletions

diff --git a/net/http/http_chunked_decoder.h b/net/http/http_chunked_decoder.h
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+++ b/net/http/http_chunked_decoder.h
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+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications.
+ * Portions created by the Initial Developer are Copyright (C) 2001
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Darin Fisher <darin@netscape.com> (original author)
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+// Derived from:
+// mozilla/netwerk/protocol/http/src/nsHttpChunkedDecoder.h
+
+#ifndef NET_HTTP_HTTP_CHUNKED_DECODER_H_
+#define NET_HTTP_HTTP_CHUNKED_DECODER_H_
+
+#include <string>
+
+namespace net {
+
+// From RFC2617 section 3.6.1, the chunked transfer coding is defined as:
+//
+//   Chunked-Body    = *chunk
+//                     last-chunk
+//                     trailer
+//                     CRLF
+//   chunk           = chunk-size [ chunk-extension ] CRLF
+//                     chunk-data CRLF
+//   chunk-size      = 1*HEX
+//   last-chunk      = 1*("0") [ chunk-extension ] CRLF
+//
+//   chunk-extension = *( ";" chunk-ext-name [ "=" chunk-ext-val ] )
+//   chunk-ext-name  = token
+//   chunk-ext-val   = token | quoted-string
+//   chunk-data      = chunk-size(OCTET)
+//   trailer         = *(entity-header CRLF)
+//
+// The chunk-size field is a string of hex digits indicating the size of the
+// chunk.  The chunked encoding is ended by any chunk whose size is zero,
+// followed by the trailer, which is terminated by an empty line.
+//
+// NOTE: This implementation does not bother to parse trailers since they are
+// not used on the web.
+//
+class HttpChunkedDecoder {
+ public:
+  HttpChunkedDecoder();
+
+  // Indicates that a previous call to FilterBuf encountered the final CRLF.
+  bool reached_eof() const { return reached_eof_; }
+
+  // Called to filter out the chunk markers from buf and to check for end-of-
+  // file.  This method modifies |buf| inline if necessary to remove chunk
+  // markers.  The return value indicates the final size of decoded data stored
+  // in |buf|.  Call reached_eof() after this method to check if end-of-file
+  // was encountered.
+  int FilterBuf(char* buf, int buf_len);
+
+ private:
+  // Scan |buf| for the next chunk delimiter.  This method returns the number
+  // of bytes consumed from |buf|.  If found, |chunk_remaining_| holds the
+  // value for the next chunk size.
+  int ScanForChunkRemaining(char* buf, int buf_len);
+
+  // Indicates the number of bytes remaining for the current chunk.
+  int chunk_remaining_;
+
+  // A small buffer used to store a partial chunk marker.
+  std::string line_buf_;
+
+  // Set to true when FilterBuf encounters the last-chunk.
+  bool reached_last_chunk_;
+
+  // Set to true when FilterBuf encounters the final CRLF.
+  bool reached_eof_;
+};
+
+}  // namespace net
+
+#endif  // NET_HTTP_HTTP_CHUNKED_DECODER_H_