node_base.h
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/*
* Copyright 2002-2014 the original author or authors.
*
* Licensed 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
*
* CC/LICENSE
*
* 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.
*/
#ifndef _NODE_BASE_H_
#define _NODE_BASE_H_
#include "common.h"
#include "fs_operator.h"
#include "tools.h"
struct base_script_t;
class NodeBase {
public:
NodeBase(const uint32_t id, const string& name,
const string& type, const string& desc, const key_map_t& keymap);
virtual ~NodeBase(void);
virtual NodeBase* run(base_script_t* param) = 0;
virtual bool load_other();
public:
/**
* @brief 判断map中是否有需要的变量,如果有，则赋值给out
*
* @param [in/out] vars : key_map_t&
* @param [in/out] key : const char*
* @param [in/out] out : std::string&
* @return bool
* @retval
* @see
* @note
* @author chenyuzhen
* @date 2011/09/06 14:17:04
**/
bool valid_str(key_map_t& vars, const char* key, std::string& out, bool trim = true);
/**
* @brief
*
* @param [in/out] vars : key_map_t&
* @param [in/out] key : const char*
* @param [in/out] out : int32_t&
* @return bool
* @retval
* @see
* @note
* @author chenyuzhen
* @date 2011/09/06 15:55:47
**/
bool valid_str(key_map_t& vars, const char* key, uint32_t& out);
static bool get_sys_var(const map<string, variable_t>& vars, uint32_t type,
std::string& out) {
bool result = false;
if (type >= _sys_var_t::END) {
return false;
}
map<string, variable_t>::const_iterator it = vars.find(SYS_VAR[type]);
if (it != vars.end() && NULL != it->second.pvalue) {
out = *(string*)(it->second.pvalue);
result = true;
}
return result;
}
/**
* @brief 进入节点
*
* @param [in/out] map<string : const
* @param [in/out] vars : variable_t>&
* @return const char*
* @retval
* @see
* @note
* @author chenyuzhen
* @date 2011/09/01 14:31:23
**/
virtual std::string enter(const map<string, variable_t>& vars)const ;
/**
* @brief 离开节点
*
* @param [in/out] map<string : const
* @param [in/out] vars : variable_t>&
* @return const char*
* @retval
* @see
* @note
* @author chenyuzhen
* @date 2011/09/01 14:31:34
**/
virtual std::string leave(const map<string, variable_t>& vars)const ;
/**
* @brief 封装了key_map的查找函数
*
* @param [in/out] key : string&
* @return bool
* @retval
* @see
* @note
* @author chenyuzhen
* @date 2011/09/02 10:54:36
**/
bool key_map_find(string& key);
/**
* @brief 封装了节点事件出口的检测
*
* @param [in/out] exit : string
* @return bool
* @retval
* @see
* @note
* @author chenyuzhen
* @date 2011/09/02 10:54:52
**/
bool check_exit(string exit);
/**
* @brief 系统调用
*
* @param [in/out] system : string&
* @return string
* @retval
* @see
* @note 目前支持的系统调用：
* _DATE：当前日期
* _TIME：当前时间
* _SECOND：1970-1-1 08:00:00 之后经过的秒数
* _INBOUND_NUM：呼入占用的通道数
* _AUTORUN_NUM：外呼占用的通道数
* @author chenyuzhen
* @date 2011/09/02 10:38:09
**/
bool system_invoke(const std::string& system, std::string& out);
/**
* @brief 字符串函数
*
* @param [in/out] func : string&
* @param [in/out] param : string&
* @return bool 仅仅在找到了函数，且函数执行失败的时候发挥false
* 其他情况下返回true
* @retval
* @see
* @note 目前支持的字符串函数有：
* LENGTH：获取字符串的长度 LENGTH(str)
* LEFT：获取字符串左边n个字符LEFT(str,n)
* RIGHT：获取字符串右边n个字符RIGHT(str,n)
* @author chenyuzhen
* @date 2011/09/02 10:48:04
**/
bool str_func_invoke(const string& func, const string& param, std::string& out);
bool db_func_invoke(const string& func, const string& name, uint32_t param,
const map<string, variable_t>& name_var_map, std::string& out);
bool map_func_invoke(const string& func, const string& name, const string& param,
const map<string, variable_t>& name_var_map, std::string& out);
/**
* @brief 解析表达式，转换为系统函数的调用
*
* @param [in] exp : string&
* @param [in] name_var_map : map<string,variable_t>&
* @return string&
* @retval
* @see system_invoke
* @note
* @author chenyuzhen
* @date 2011/09/02 10:48:04
**/
bool parse_sys_invoke(const string& exp, const map<string, variable_t>& name_var_map,
string& out);
/**
* @brief 解析流程级别的表达式，替换为流程级别的变量值
*
* @param [in] exp : string&
* @param [in] name_var_map : map<string,variable_t>&
* @return string&
* @retval
* @see
* @note
* @author chenyuzhen
* @date 2011/09/02 10:48:04
**/
bool parse_variable(const string& exp_, const map<string, variable_t>& name_var_map,
string& out);
/**
* @brief 解析函数调用，然后调用相关函数完成相关功能
*
* @param [in] exp : string&
* @param [in] name_var_map : map<string,variable_t>&
* @return string&
* @retval
* @see str_func_invoke,db_func_invoke,map_func_invoke
* @note
* @author chenyuzhen
* @date 2011/09/02 10:48:04
**/
bool parse_function(const string& exp_, const map<string, variable_t>& name_var_map,
string& out);
/**
* @brief 解析表达式的统一入口
*
* @param [in] exp : string&
* @param [in] name_var_map : map<string,variable_t>&
* @return string&
* @retval
* @see parse_function,parse_variable,parse_sys_invoke
* @note
* @author chenyuzhen
* @date 2011/09/02 10:48:04
**/
bool parse_expression(const string exp, const map<string, variable_t>& name_var_map,
string& out);
/**
* @brief 所有表达式进行转换
*
* @param [in/out] exp : const std::string
* @param [in/out] map<string : const
* @param [in/out] name_var_map : variable_t>&
* @param [in/out] out : string&
* @return bool
* @retval
* @see
* @note
* @author chenyuzhen
* @date 2011/09/21 12:35:35
**/
bool parse_all(const std::string exp, const map<string, variable_t>& name_var_map,
string& out);
public:
uint32_t _id;
string _name;
string _desc;
string _type;
key_map_t _key_map;
map<string, uint32_t> _exit_id_map; //事件出口到节点ID的映射
map<string, NodeBase*> _exit_node_map; //事件出口到节点对象的映射
vector<string> _system_invoke_vec;
vector<string> _function_vec;
protected:
const static char* EXIT_SUCC; ///<
const static char* EXIT_FAIL; ///<
const static char* SYS_DATE; ///<
const static char* SYS_TIME; ///<
const static char* SYS_SEC; ///<
const static char* SYS_INBOUND_NUM; ///<
const static char* SYS_OUTBOUND_NUM; ///<
const static char* SYS_ANSWER_TIME; ///<
const static char* SYS_HANGUP_CAUSE; ///<
const static char* FUNC_STR_LEN; ///<
const static char* FUNC_STR_LEFT; ///<
const static char* FUNC_STR_RIGHT; ///<
const static char* FUNC_STR_FIND; ///<
const static char* FUNC_STR_SUB; ///<
const static char* FUNC_STR_REPLACE; ///<
const static char* FUNC_INT_RAND; ///<
const static char* FUNC_DB_NEXT; ///<
const static char* FUNC_DB_VAL; ///<
const static char* FUNC_MAP_VAL; ///<
const static char* HANGUP_CAUSE_SYS;
const static char* HANGUP_CAUSE_USER;
const static char* HANGUP_CAUSE_THIRD;
};
#endif