blob: 784af67af0ae509485d8c4ecd3baa9010119087f [file] [log] [blame]
// Copyright 2016 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.
#include <string>
#include <unordered_map>
#include <vector>
#include "base/macros.h"
#include "base/optional.h"
namespace link_header_util {
using StringIteratorPair =
std::pair<std::string::const_iterator, std::string::const_iterator>;
// Split a Link: header in its individual values. A single Link: header can
// contain multiple values, which are comma separated. This method splits the
// entire string into iterator pairs for the individual link values.
// This is very similar to what net::HttpUtil::ValuesIterator does, except it
// takes the special syntax of <> enclosed URLs into account.
std::vector<StringIteratorPair> SplitLinkHeader(const std::string& header);
// Parse an individual link header in its URL and parameters. |begin| and |end|
// indicate the string to parse. If it is succesfully parsed as a link header
// value this method returns true, sets |url| to the URL part of the link header
// value and adds the parameters from the link header value to |params|.
// If any error occurs parsing, this returns false (but might have also modified
// |url| and/or |params|).
bool ParseLinkHeaderValue(
std::string::const_iterator begin,
std::string::const_iterator end,
std::string* url,
std::unordered_map<std::string, base::Optional<std::string>>* params);
} // namespace link_header_util