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122 lines
3.9 KiB
C++
122 lines
3.9 KiB
C++
/*
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* Copyright 2016 Facebook, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#define FOLLY_URI_H_
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#include <folly/String.h>
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#include <vector>
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namespace folly {
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/**
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* Class representing a URI.
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*
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* Consider http://www.facebook.com/foo/bar?key=foo#anchor
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*
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* The URI is broken down into its parts: scheme ("http"), authority
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* (ie. host and port, in most cases: "www.facebook.com"), path
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* ("/foo/bar"), query ("key=foo") and fragment ("anchor"). The scheme is
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* lower-cased.
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*
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* If this Uri represents a URL, note that, to prevent ambiguity, the component
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* parts are NOT percent-decoded; you should do this yourself with
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* uriUnescape() (for the authority and path) and uriUnescape(...,
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* UriEscapeMode::QUERY) (for the query, but probably only after splitting at
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* '&' to identify the individual parameters).
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*/
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class Uri {
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public:
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/**
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* Parse a Uri from a string. Throws std::invalid_argument on parse error.
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*/
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explicit Uri(StringPiece str);
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const fbstring& scheme() const { return scheme_; }
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const fbstring& username() const { return username_; }
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const fbstring& password() const { return password_; }
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/**
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* Get host part of URI. If host is an IPv6 address, square brackets will be
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* returned, for example: "[::1]".
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*/
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const fbstring& host() const { return host_; }
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/**
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* Get host part of URI. If host is an IPv6 address, square brackets will not
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* be returned, for exmaple "::1"; otherwise it returns the same thing as
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* host().
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*
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* hostname() is what one needs to call if passing the host to any other tool
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* or API that connects to that host/port; e.g. getaddrinfo() only understands
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* IPv6 host without square brackets
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*/
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fbstring hostname() const;
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uint16_t port() const { return port_; }
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const fbstring& path() const { return path_; }
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const fbstring& query() const { return query_; }
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const fbstring& fragment() const { return fragment_; }
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fbstring authority() const;
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template <class String>
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String toString() const;
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std::string str() const { return toString<std::string>(); }
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fbstring fbstr() const { return toString<fbstring>(); }
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void setPort(uint16_t port) {
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hasAuthority_ = true;
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port_ = port;
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}
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/**
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* Get query parameters as key-value pairs.
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* e.g. for URI containing query string: key1=foo&key2=&key3&=bar&=bar=
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* In returned list, there are 3 entries:
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* "key1" => "foo"
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* "key2" => ""
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* "key3" => ""
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* Parts "=bar" and "=bar=" are ignored, as they are not valid query
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* parameters. "=bar" is missing parameter name, while "=bar=" has more than
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* one equal signs, we don't know which one is the delimiter for key and
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* value.
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*
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* Note, this method is not thread safe, it might update internal state, but
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* only the first call to this method update the state. After the first call
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* is finished, subsequent calls to this method are thread safe.
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*
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* @return query parameter key-value pairs in a vector, each element is a
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* pair of which the first element is parameter name and the second
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* one is parameter value
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*/
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const std::vector<std::pair<fbstring, fbstring>>& getQueryParams();
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private:
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fbstring scheme_;
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fbstring username_;
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fbstring password_;
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fbstring host_;
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bool hasAuthority_;
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uint16_t port_;
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fbstring path_;
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fbstring query_;
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fbstring fragment_;
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std::vector<std::pair<fbstring, fbstring>> queryParams_;
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};
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} // namespace folly
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#include <folly/Uri-inl.h>
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