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73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
// Copyright 2011 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_HTTP_HTTP_BYTE_RANGE_H_
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#define NET_HTTP_HTTP_BYTE_RANGE_H_
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#include <stdint.h>
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#include <string>
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#include "net/base/net_export.h"
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namespace net {
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// A container class that represents a "range" specified for range request
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// specified by RFC 7233 Section 2.1.
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// https://tools.ietf.org/html/rfc7233#section-2.1
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class NET_EXPORT HttpByteRange {
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public:
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HttpByteRange();
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// Convenience constructors.
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static HttpByteRange Bounded(int64_t first_byte_position,
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int64_t last_byte_position);
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static HttpByteRange RightUnbounded(int64_t first_byte_position);
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static HttpByteRange Suffix(int64_t suffix_length);
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// Since this class is POD, we use constructor, assignment operator
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// and destructor provided by compiler.
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int64_t first_byte_position() const { return first_byte_position_; }
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void set_first_byte_position(int64_t value) { first_byte_position_ = value; }
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int64_t last_byte_position() const { return last_byte_position_; }
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void set_last_byte_position(int64_t value) { last_byte_position_ = value; }
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int64_t suffix_length() const { return suffix_length_; }
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void set_suffix_length(int64_t value) { suffix_length_ = value; }
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// Returns true if this is a suffix byte range.
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bool IsSuffixByteRange() const;
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// Returns true if the first byte position is specified in this request.
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bool HasFirstBytePosition() const;
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// Returns true if the last byte position is specified in this request.
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bool HasLastBytePosition() const;
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// Returns true if this range is valid.
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bool IsValid() const;
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// Gets the header string, e.g. "bytes=0-100", "bytes=100-", "bytes=-100".
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// Assumes range is valid.
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std::string GetHeaderValue() const;
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// A method that when given the size in bytes of a file, adjust the internal
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// |first_byte_position_| and |last_byte_position_| values according to the
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// range specified by this object. If the range specified is invalid with
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// regard to the size or |size| is negative, returns false and there will be
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// no side effect.
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// Returns false if this method is called more than once and there will be
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// no side effect.
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bool ComputeBounds(int64_t size);
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private:
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int64_t first_byte_position_;
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int64_t last_byte_position_;
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int64_t suffix_length_;
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bool has_computed_bounds_ = false;
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};
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} // namespace net
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#endif // NET_HTTP_HTTP_BYTE_RANGE_H_
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