Add Config File Test

cpp/cfgfile.cpp

@@ -0,0 +1,92 @@
+#include <iostream>
+#include <fstream>
+#include <string>
+
+typedef void (*pfun)();//The Function Pointer
+
+static bool readCfgFile(const char * cfgfilePath,const std::string &key,std::string &value){
+    //Open The Config File
+    std::fstream cfgfile;
+    cfgfile.open(cfgfilePath);
+    if(!cfgfile.is_open()){
+        std::cout<<"Failed to open the file!"<<std::endl;
+        return false;
+    }
+
+    //Read each line of config file and get value
+    char tmp[1000];
+    while(!cfgfile.eof()){
+        cfgfile.getline(tmp,1000);
+        std::string line(tmp);
+        std::size_t pos = line.find('=');//Get the position of '='
+
+        if(pos == std::string::npos){
+            cfgfile.close();
+            return false;
+        }
+
+        std::string tmpkey=line.substr(0,pos);
+        if(tmpkey == key){
+            value=line.substr(pos+1);
+            cfgfile.close();
+            return true;
+        }
+    }
+
+    cfgfile.close();
+    return false;
+}
+
+static void readcfg(){
+    //Input Config File Path and Key
+    char filename[1000];
+    std::string cfgkey,cfgvalue;
+
+    std::cout<<"Input Config File Name"<<std::endl;//Config File Name
+    std::cin.clear();//Clear the cin to read line
+    std::cin.getline(filename,1000);
+
+    std::cout<<"Input Config Key"<<std::endl;//Config Key
+    std::cin>>cfgkey;
+
+    //Get The Config
+    if(readCfgFile(filename,cfgkey,cfgvalue)){
+        std::cout<<"The Config Of "<<cfgkey<<" is "<<cfgvalue<<std::endl;
+    }else{
+        std::cout<<"Failed to Read Config!"<<std::endl;
+    }
+}
+
+static void appendcfg(){
+    //Input Config File Path and Key
+    char filename[1000];
+    std::string cfgkey,cfgvalue;
+
+    std::cout<<"Input Config File Name"<<std::endl;
+    std::cin.clear();//Clear the cin to read line
+    std::cin.getline(filename,1000);
+
+    //Append Config
+    std::fstream cfgfile;
+    cfgfile.open(filename,std::ios_base::app);
+
+    if(cfgfile.is_open()){
+        std::cout<<"Input Config Key And Config Value"<<std::endl;
+        std::cin>>cfgkey>>cfgvalue;
+        cfgfile<<cfgkey<<"="<<cfgvalue<<std::endl;
+        cfgfile.close();
+    }else{
+        std::cout<<"Config File Open Failed!"<<std::endl;
+    }
+}
+
+int main(int argc,char **argv){
+    //Function Pointer to select mode
+    pfun feature[]={readcfg,appendcfg};
+    //Get Selection and execute a mode
+    int selection;
+    std::cout<<"0.Read a Config 1.Append a Config"<<std::endl<<"Selection a mode:";
+    std::cin>>selection;
+    feature[selection]();
+    return 0;
+}