plugins/header_rewrite/parser.h

/*
  Licensed to the Apache Software Foundation (ASF) under one
  or more contributor license agreements.  See the NOTICE file
  distributed with this work for additional information
  regarding copyright ownership.  The ASF licenses this file
  to you under the Apache License, Version 2.0 (the
  "License"); you may not use this file except in compliance
  with the License.  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
*/
//////////////////////////////////////////////////////////////////////////////////////////////
//
// Interface for the config line parser
//
#pragma once

#include <string>
#include <vector>
#include <algorithm>

#include "ts/ts.h"
#include "lulu.h"

///////////////////////////////////////////////////////////////////////////////
//
class Parser
{
public:
  Parser(){};

  // noncopyable
  Parser(const Parser &) = delete;
  void operator=(const Parser &) = delete;

  bool
  empty() const
  {
    return _empty;
  }

  bool
  is_cond() const
  {
    return _cond;
  }

  const std::string &
  get_op() const
  {
    return _op;
  }

  std::string &
  get_arg()
  {
    return _arg;
  }

  const std::string &
  get_value() const
  {
    return _val;
  }

  bool
  mod_exist(const std::string &m) const
  {
    return std::find(_mods.begin(), _mods.end(), m) != _mods.end();
  }

  bool cond_is_hook(TSHttpHookID &hook) const;

  const std::vector<std::string> &
  get_tokens() const
  {
    return _tokens;
  }

  bool parse_line(const std::string &original_line);

private:
  bool preprocess(std::vector<std::string> tokens);

  bool _cond  = false;
  bool _empty = false;
  std::vector<std::string> _mods;
  std::string _op;
  std::string _arg;
  std::string _val;

protected:
  std::vector<std::string> _tokens;
};

class HRWSimpleTokenizer
{
public:
  explicit HRWSimpleTokenizer(const std::string &line);

  // noncopyable
  HRWSimpleTokenizer(const HRWSimpleTokenizer &) = delete;
  void operator=(const HRWSimpleTokenizer &) = delete;

  const std::vector<std::string> &
  get_tokens() const
  {
    return _tokens;
  }

protected:
  std::vector<std::string> _tokens;
};