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- // 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.
- #ifndef COMPONENTS_LINK_HEADER_UTIL_LINK_HEADER_UTIL_H_
- #define COMPONENTS_LINK_HEADER_UTIL_LINK_HEADER_UTIL_H_
- #include <string>
- #include <unordered_map>
- #include <vector>
- #include "third_party/abseil-cpp/absl/types/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 successfully 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`. All
- // keys of `params` are lower cased.
- // 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, absl::optional<std::string>>* params);
- } // namespace link_header_util
- #endif // COMPONENTS_LINK_HEADER_UTIL_LINK_HEADER_UTIL_H_
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