1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef NET_HTTP_HTTP_BYTE_RANGE_H_ 6 #define NET_HTTP_HTTP_BYTE_RANGE_H_ 7 8 #include "base/basictypes.h" 9 10 namespace net { 11 12 // A container class that represents a "range" specified for range request 13 // specified by RFC 2616 Section 14.35.1. 14 // http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1 15 class HttpByteRange { 16 public: 17 HttpByteRange(); 18 19 // Since this class is POD, we use constructor, assignment operator 20 // and destructor provided by compiler. 21 int64 first_byte_position() const { return first_byte_position_; } 22 void set_first_byte_position(int64 value) { first_byte_position_ = value; } 23 24 int64 last_byte_position() const { return last_byte_position_; } 25 void set_last_byte_position(int64 value) { last_byte_position_ = value; } 26 27 int64 suffix_length() const { return suffix_length_; } 28 void set_suffix_length(int64 value) { suffix_length_ = value; } 29 30 // Returns true if this is a suffix byte range. 31 bool IsSuffixByteRange() const; 32 // Returns true if the first byte position is specified in this request. 33 bool HasFirstBytePosition() const; 34 // Returns true if the last byte position is specified in this request. 35 bool HasLastBytePosition() const; 36 37 // Returns true if this range is valid. 38 bool IsValid() const; 39 40 // A method that when given the size in bytes of a file, adjust the internal 41 // |first_byte_position_| and |last_byte_position_| values according to the 42 // range specified by this object. If the range specified is invalid with 43 // regard to the size or |size| is negative, returns false and there will be 44 // no side effect. 45 // Returns false if this method is called more than once and there will be 46 // no side effect. 47 bool ComputeBounds(int64 size); 48 49 private: 50 int64 first_byte_position_; 51 int64 last_byte_position_; 52 int64 suffix_length_; 53 bool has_computed_bounds_; 54 }; 55 56 } // namespace net 57 58 #endif // NET_HTTP_HTTP_BYTE_RANGE_H_ 59
