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 #pragma once 8 9 #include "base/basictypes.h" 10 11 namespace net { 12 13 // A container class that represents a "range" specified for range request 14 // specified by RFC 2616 Section 14.35.1. 15 // http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1 16 class HttpByteRange { 17 public: 18 HttpByteRange(); 19 20 // Since this class is POD, we use constructor, assignment operator 21 // and destructor provided by compiler. 22 int64 first_byte_position() const { return first_byte_position_; } 23 void set_first_byte_position(int64 value) { first_byte_position_ = value; } 24 25 int64 last_byte_position() const { return last_byte_position_; } 26 void set_last_byte_position(int64 value) { last_byte_position_ = value; } 27 28 int64 suffix_length() const { return suffix_length_; } 29 void set_suffix_length(int64 value) { suffix_length_ = value; } 30 31 // Returns true if this is a suffix byte range. 32 bool IsSuffixByteRange() const; 33 // Returns true if the first byte position is specified in this request. 34 bool HasFirstBytePosition() const; 35 // Returns true if the last byte position is specified in this request. 36 bool HasLastBytePosition() const; 37 38 // Returns true if this range is valid. 39 bool IsValid() const; 40 41 // A method that when given the size in bytes of a file, adjust the internal 42 // |first_byte_position_| and |last_byte_position_| values according to the 43 // range specified by this object. If the range specified is invalid with 44 // regard to the size or |size| is negative, returns false and there will be 45 // no side effect. 46 // Returns false if this method is called more than once and there will be 47 // no side effect. 48 bool ComputeBounds(int64 size); 49 50 private: 51 int64 first_byte_position_; 52 int64 last_byte_position_; 53 int64 suffix_length_; 54 bool has_computed_bounds_; 55 }; 56 57 } // namespace net 58 59 #endif // NET_HTTP_HTTP_BYTE_RANGE_H_ 60
