脚本配置组件

规则说明：

Config文件格式说明:1.每个数据块以 . 标志2.数据块内部 格式：每一行就包括两项：name，data特别注意：同一内容的数据间不可以用空格分开，否则不能被整体存储.size500 500 500----wrongsize500/500/500----right

例子脚本

 .SkyBoxbackBmpData/SkyBox/Back.bmpfrontBmpData/SkyBox/Front.bmpbottomBmpData/SkyBox/Bottom.bmptopBmp Data/SkyBox/Top.bmpleftBmpData/SkyBox/Left.bmprightBmp Data/SkyBox/Right.bmpposition0.0,0.0,0.0size500,500,500.WalltextureData/wall.bmpsize600,300,600.GroundtextureData/ground/SAND0.bmp

 

测试程序：

#include <iostream>#include <string>#include "Config.h"int main(){using namespace std;Config scriptConfig("Config.txt");{scriptConfig.loadBlock("SkyBox");string backBmp;float skyboxPos[3];scriptConfig.getString("backBmp", backBmp);scriptConfig.getFloat("position", skyboxPos, 3);cout << backBmp << endl;cout << "SkyBox position: " << skyboxPos[0] << " " << skyboxPos[1] << " " << skyboxPos[2] << endl;}{scriptConfig.loadBlock("Wall");stringwallTexture;intwallSize[3];scriptConfig.getString("texture", wallTexture);scriptConfig.getInt("size", wallSize, 3);cout << wallTexture << endl;cout << "Wall Size: " << wallSize[0] << " " << wallSize[1] << " " << wallSize[2] << endl;}{scriptConfig.loadBlock("Ground");string groundTexture;scriptConfig.getString("texture", groundTexture);cout << groundTexture << endl;}system("PAUSE");return 0;}

测试输出：

Data/SkyBox/Back.bmpSkyBox position: 0 0 0Data/wall.bmpWall Size: 600 300 600Data/ground/SAND0.bmp请按任意键继续. . .

 

下面是配置程序的源代码(示范性，并没有各种错误检测)

头文件

#ifndef __CONFIG_H#define __CONFIG_H#include <string>#include <fstream>#include <map>#include <sstream>#include <iostream>class Config{private:// The file streamstd::ifstream m_File;// The key itemsstd::map < std::string, std::string > m_Items;public:Config();Config( const char *cfg_filename );bool open( const char *cfg_filename );void close();// 从文件中读取出sTitle指定的块int loadBlock( const std::string &sTitle );// 读取void getString( const std::string &sKey, std::string &sOut );void getInt( const std::string &sKey, int *out, const int nCount = 1 );void getBool( const std::string &sKey, bool *out, const int nCount = 1 );void getFloat( const std::string &sKey, float *out, const int nCount = 1 );void getDouble( const std::string &sKey, double *out, const int nCount = 1 );void getChar( const std::string &sKey, char *out, const int nCount = 1 );static std::string path;static float temp[3];private:// 成员模板函数：template<typename T>void _get( const std::string &sKey, T *out, const int nCount );// 将文件指针重置到文件开始处void _reset();}; // end of class Configtemplate<typename T>void Config::_get( const std::string &sKey, T *out, const int nCount ){// Create a string stream to easily read the values// from out data stringstd::istringstream instream;instream.clear();instream.str( m_Items[sKey] );// dummy character to read delimiterchar d;// 将data部分存放到out数组中，忽略中间的,分隔符:"/" ","for( int i=0; i<nCount; ++i ) {instream >> out[i] >> d;}} // end of _get#endif /* __CONFIG_H */

cpp文件

#include "Config.h"std::string Config::path;float Config::temp[3];Config::Config() {}Config::Config( const char *cfg_filename ) {open( cfg_filename );}// ------------------------------------------------------------------------bool Config::open( const char *cfg_filename ){m_File.open( cfg_filename );return m_File.is_open();}// ------------------------------------------------------------------------void Config::close() { m_File.close(); }// ------------------------------------------------------------------------int Config::loadBlock( const std::string &sTitle ){if( !m_File.is_open() ) return -1;std::string sCmpTitle;while( m_File >> sCmpTitle ) {// 数据块用"."标志// 找到名叫sTitle的数据块if( (std::string(".")+sTitle) == sCmpTitle ){std::string sKey, sValue;// 循环每次处理一行,见Config文件格式.// size500/500/500// 将name 和 数据两个字符串存放到map m_Items中，// 数据串 500/500/500在getInt函数中解析while( m_File >> sKey >> sValue ){// 找到下一数据块时退出if( sKey[0] == '.' || sKey[0] == ' ' ) break;m_Items[ sKey ] = sValue;}// 重置文件指针_reset();return 1;}}return 0;}// ------------------------------------------------------------------------void Config::getInt( const std::string &sKey, int *out, const int nCount ){_get<int>( sKey, out, nCount );}// ------------------------------------------------------------------------void Config::getBool( const std::string &sKey, bool *out, const int nCount ){_get<bool>( sKey, out, nCount );}// ------------------------------------------------------------------------void Config::getChar( const std::string &sKey, char *out, const int nCount ){_get<char>( sKey, out, nCount );}// ------------------------------------------------------------------------void Config::getFloat( const std::string &sKey, float *out, const int nCount ){_get<float>( sKey, out, nCount );}// ------------------------------------------------------------------------void Config::getDouble( const std::string &sKey, double *out, const int nCount ){_get<double>( sKey, out, nCount );}// ------------------------------------------------------------------------void Config::getString( const std::string &sKey, std::string &sOut ) {sOut = m_Items[ sKey ];}// ------------------------------------------------------------------------void Config::_reset(){m_File.clear();m_File.seekg( 0, std::ios_base::beg );}

 

add by RYF 2011-6-27

块与块之间的名称可以重复。因为loadBlock函数只是读取指定块。。。

add by RYF 2013-01-25

可扩展项：

1. 配置脚本中支持注释：#单行注释

2. 以及脚本之间的引用关系，$include 关键字。$include file_other.conf