98 lines
3.3 KiB
C++
98 lines
3.3 KiB
C++
/*
|
|
* nghttp2 - HTTP/2 C Library
|
|
*
|
|
* Copyright (c) 2015 Tatsuhiro Tsujikawa
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
#ifndef SHRPX_ROUTER_H
|
|
#define SHRPX_ROUTER_H
|
|
|
|
#include "shrpx.h"
|
|
|
|
#include <vector>
|
|
#include <memory>
|
|
|
|
#include "allocator.h"
|
|
|
|
namespace shrpx {
|
|
|
|
struct RNode {
|
|
RNode();
|
|
RNode(const char *s, size_t len, size_t index);
|
|
RNode(RNode &&) = default;
|
|
RNode(const RNode &) = delete;
|
|
RNode &operator=(RNode &&) = default;
|
|
RNode &operator=(const RNode &) = delete;
|
|
|
|
// Next RNode, sorted by s[0].
|
|
std::vector<std::unique_ptr<RNode>> next;
|
|
// Stores pointer to the string this node represents. Not
|
|
// NULL-terminated.
|
|
const char *s;
|
|
// Length of |s|
|
|
size_t len;
|
|
// Index of pattern if match ends in this node. Note that we don't
|
|
// store duplicated pattern.
|
|
ssize_t index;
|
|
};
|
|
|
|
class Router {
|
|
public:
|
|
Router();
|
|
~Router();
|
|
Router(Router &&) = default;
|
|
Router(const Router &) = delete;
|
|
Router &operator=(Router &&) = default;
|
|
Router &operator=(const Router &) = delete;
|
|
|
|
// Adds route |pattern| with its |index|.
|
|
bool add_route(const StringRef &pattern, size_t index);
|
|
// Returns the matched index of pattern. -1 if there is no match.
|
|
ssize_t match(const StringRef &host, const StringRef &path) const;
|
|
// Returns the matched index of pattern |s|. -1 if there is no
|
|
// match.
|
|
ssize_t match(const StringRef &s) const;
|
|
// Returns the matched index of pattern if a pattern is a suffix of
|
|
// |s|, otherwise -1. If |*last_node| is not nullptr, it specifies
|
|
// the first node to start matching. If it is nullptr, match will
|
|
// start from scratch. When the match was found (the return value
|
|
// is not -1), |*nread| has the number of bytes matched in |s|, and
|
|
// |*last_node| has the last matched node. One can continue to
|
|
// match the longer pattern using the returned |*last_node| to the
|
|
// another invocation of this function until it returns -1.
|
|
ssize_t match_prefix(size_t *nread, const RNode **last_node,
|
|
const StringRef &s) const;
|
|
|
|
void add_node(RNode *node, const char *pattern, size_t patlen, size_t index);
|
|
|
|
void dump() const;
|
|
|
|
private:
|
|
BlockAllocator balloc_;
|
|
// The root node of Patricia tree. This is special node and its s
|
|
// field is nulptr, and len field is 0.
|
|
RNode root_;
|
|
};
|
|
|
|
} // namespace shrpx
|
|
|
|
#endif // SHRPX_ROUTER_H
|