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Diffstat (limited to 'chromium/net/base/gzip_header.h')
-rw-r--r-- | chromium/net/base/gzip_header.h | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/chromium/net/base/gzip_header.h b/chromium/net/base/gzip_header.h deleted file mode 100644 index 82e55c24e07..00000000000 --- a/chromium/net/base/gzip_header.h +++ /dev/null @@ -1,94 +0,0 @@ -// Copyright (c) 2011 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -// The GZipHeader class allows you to parse a gzip header, such as you -// might find at the beginning of a file compressed by gzip (ie, a .gz -// file), or at the beginning of an HTTP response that uses a gzip -// Content-Encoding. See RFC 1952 for the specification for the gzip -// header. -// -// The model is that you call ReadMore() for each chunk of bytes -// you've read from a file or socket. -// - -#ifndef NET_BASE_GZIP_HEADER_H_ -#define NET_BASE_GZIP_HEADER_H_ - -#include "base/basictypes.h" - -namespace net { - -class GZipHeader { - public: - enum Status { - INCOMPLETE_HEADER, // don't have all the bits yet... - COMPLETE_HEADER, // complete, valid header - INVALID_HEADER, // found something invalid in the header - }; - - GZipHeader(); - ~GZipHeader(); - - // Wipe the slate clean and start from scratch. - void Reset(); - - // Attempt to parse the given buffer as the next installment of - // bytes from a gzip header. If the bytes we've seen so far do not - // yet constitute a complete gzip header, return - // INCOMPLETE_HEADER. If these bytes do not constitute a *valid* - // gzip header, return INVALID_HEADER. When we've seen a complete - // gzip header, return COMPLETE_HEADER and set the pointer pointed - // to by header_end to the first byte beyond the gzip header. - Status ReadMore(const char* inbuf, - int inbuf_len, - const char** header_end); - private: - enum { // flags (see RFC) - FLAG_FTEXT = 0x01, // bit 0 set: file probably ascii text - FLAG_FHCRC = 0x02, // bit 1 set: header CRC present - FLAG_FEXTRA = 0x04, // bit 2 set: extra field present - FLAG_FNAME = 0x08, // bit 3 set: original file name present - FLAG_FCOMMENT = 0x10, // bit 4 set: file comment present - FLAG_RESERVED = 0xE0, // bits 5..7: reserved - }; - - enum State { - // The first 10 bytes are the fixed-size header: - IN_HEADER_ID1, - IN_HEADER_ID2, - IN_HEADER_CM, - IN_HEADER_FLG, - IN_HEADER_MTIME_BYTE_0, - IN_HEADER_MTIME_BYTE_1, - IN_HEADER_MTIME_BYTE_2, - IN_HEADER_MTIME_BYTE_3, - IN_HEADER_XFL, - IN_HEADER_OS, - - IN_XLEN_BYTE_0, - IN_XLEN_BYTE_1, - IN_FEXTRA, - - IN_FNAME, - - IN_FCOMMENT, - - IN_FHCRC_BYTE_0, - IN_FHCRC_BYTE_1, - - IN_DONE, - }; - - static const uint8 magic[]; // gzip magic header - - int state_; // our current State in the parsing FSM: an int so we can ++ - uint8 flags_; // the flags byte of the header ("FLG" in the RFC) - uint16 extra_length_; // how much of the "extra field" we have yet to read - - DISALLOW_COPY_AND_ASSIGN(GZipHeader); -}; - -} // namespace net - -#endif // NET_BASE_GZIP_HEADER_H_ |