介绍

R3是一个高性能的URL路由器库，因此，它是用C实现的。它将R3路由路径编译成前缀trie。
通过在启动时构造前缀树，可以高效地将路径分配给控制器。

• github地址
  https://github.com/c9s/r3

安装

sudo yum install pcre-devel # 安装 pcre: perl的正则库
mkdir c9s && cd c9s
git clone https://github.com/c9s/r3.git
cd r3
git checkout 2.0 
mkdir build && cd build
cmake .. && make && sudo make install

# 在~/.zshrc 或者是 ~/.bashrc 中写明
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/lib/pkgconfig:/usr/local/lib/pkgconfig

# source ~/.zshrc 或 source ~/.bashrc后
pkg-config --list-all | grep 'r3' #看看能不能找得到
pkg-config --libs r3 # -L/usr/local/lib -lr3 -lpcre

注：

• spdlog/spdlog.h 与 r3.h 发生了冲突，编译不过。。。

/usr/local/include/spdlog/fmt/bundled/format.h:1817:35: error: inconsistent types ‘int’ and ‘bool’ deduced for lambda return type

第一个程序

// simple_test.cc
#include <cassert>
#include <iostream>
#include <r3.h>
#include <string>

int main(int argc, char *argv[]) {

  auto tree_ = r3_tree_create(1024);
  std::string home_path_ = "/home/";
  std::string page_path_ = "/page/{id:\\d+}";

  r3_tree_insert_routel(tree_, METHOD_GET | METHOD_POST, home_path_.c_str(),
                        home_path_.size(), nullptr);
  r3_tree_insert_routel(tree_, METHOD_GET | METHOD_POST, page_path_.c_str(),
                        page_path_.size(), nullptr);
  char *errstr_ = nullptr;
  if (r3_tree_compile(tree_, &errstr_)) {
    std::cerr << "err!:" << errstr_ << std::endl;
    free(errstr_);
    return 1;
  }

  auto entry_ = match_entry_create("/page/11024");
  entry_->request_method = METHOD_GET;
  auto matched_entry_ = r3_tree_match_route(tree_, entry_);
  assert(matched_entry_ != nullptr);
  if (matched_entry_->host.len)
    std::cout << " matched host: " << matched_entry_->host.base << std::endl;
  if (matched_entry_->path.len)
    std::cout << " matched path: " << matched_entry_->path.base << std::endl;
  if (matched_entry_->remote_addr_pattern.len)
    std::cout << " matched remote_addr_pattern: "
              << matched_entry_->remote_addr_pattern.base << std::endl;
  match_entry_free(entry_);

  r3_tree_free(tree_);
  return 0;
}

g++ -o simple_test simple_test.cc -std=c++11 -lpcre -lr3