111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
/*
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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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* Copyright 2015, 2017 Danny Robson <danny@nerdcruft.net>
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*/
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#ifndef CRUFT_UTIL_URI_HPP
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#define CRUFT_UTIL_URI_HPP
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#include "debug.hpp"
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#include "view.hpp"
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#include <array>
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#include <string>
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#include <stdexcept>
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namespace util {
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// parsing of rfc3986 uniform resource identifiers
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//
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// does not currently perform normalisation (scheme or protocol),
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// comparison, or other associated operations. though these should be
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// added in the future.
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//
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// note that the parsed results may not always conform to expectations
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// for some protocols. eg, mailto identifiers are complex to parse
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// reliably and would require a specialised parser to be reliable.
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//
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// not all fields will be present for all protocols (or all instances of
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// any given protocol). eg, the "tel" is unlikely to have port numbers.
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class uri {
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public:
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explicit uri (std::string &&);
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explicit uri (const std::string&);
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explicit uri (const char *);
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explicit uri (util::view<const char *>);
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class parse_error : public std::runtime_error
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{ using runtime_error::runtime_error; };
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// URI: 'https://user:password@example.com:80/path/to?foo=bar#fragment'
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//
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// SCHEME: 'https'
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// HIERARCHICAL: 'user:password@example.com:80/path/to'
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// AUTHORITY: 'user:password@example.com:80'
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// USER: 'user:password'
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// HOST: 'example.com'
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// PORT: '80'
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// PATH: '/path/to'
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// QUERY: 'foo=bar'
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// FRAGMENT: 'fragment'
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enum component {
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SCHEME,
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HIERARCHICAL,
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AUTHORITY,
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USER,
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HOST,
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PORT,
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PATH,
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QUERY,
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FRAGMENT,
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NUM_COMPONENTS
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};
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view<const char*>
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get (component c) const&
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{
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CHECK_LIMIT (c, 0, NUM_COMPONENTS);
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return m_views[c];
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}
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util::view<const char*> all (void) const& { return util::make_view (m_value); }
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util::view<const char*> scheme (void) const& { return get (SCHEME); }
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util::view<const char*> heirarchical (void) const& { return get (HIERARCHICAL); }
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util::view<const char*> authority (void) const& { return get (AUTHORITY); }
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util::view<const char*> user (void) const& { return get (USER); }
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util::view<const char*> host (void) const& { return get (HOST); }
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util::view<const char*> port (void) const& { return get (PORT); }
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util::view<const char*> path (void) const& { return get (PATH); }
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util::view<const char*> query (void) const& { return get (QUERY); }
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util::view<const char*> fragment (void) const& { return get (FRAGMENT); }
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auto components (void) const& noexcept { return m_views; }
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static std::string percent_decode (view<const char*>);
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private:
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std::array<view<const char*>, NUM_COMPONENTS> m_views;
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std::string m_value;
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};
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std::ostream& operator<< (std::ostream&, uri::component);
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}
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#endif
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