My-OS.rar_c++命令解释器_命令行解释器_命令解释

#include <io.h> #include <iostream> #include<stdio.h> #include<string> #include <direct.h> using namespace std; int main() { void path(); int filein(); int environment(); printf("%s\n","第一次使用请先输入help获取帮助"); int flag=1; string s1; while(flag==1) { cin>>s1; if(s1=="cd") path(); else if(s1=="dir") filein(); else if(s1=="environ") environment(); else if(s1=="echo") { printf("%s\n","请输入要输入的内容:"); string s2; cin>>s2; cout<<s2<<endl; } else if(s1=="help") { printf("帮助手册如下：\n"); printf("文件查找请输入:cd +路径(例如 cd E:\\..)\n"); printf("列出目录的内容请输入:dir (例如 dir E:\\..)\n"); printf("列出所有的环境变量请输入：environ\n"); printf("在屏幕上显示<comment>请输入：echo\n"); printf("帮助操作请输入：help\n"); printf("退出请输入：quit\n"); printf("其他输入解释:请输入除以上的任意指令\n"); } else if(s1=="quit") flag--; else cout<<s1+"不是该系统的内部命令"<<endl; } } void path() { printf("请输入更改后的路径："); string s2; cin>>s2; char path[1024]; getcwd(path, 1024 ); const char * ch=s2.c_str(); chdir(ch); cout<<getcwd(NULL,0)<<endl; } int filein() { string str; cout<<"请输入文件路径："<<endl; cin>>str; str=str+"\\*.*"; const char *ch=str.c_str(); _finddata_t file; int k; long HANDLE; k = HANDLE = _findfirst(ch, &file ); if(k==-1) cout<<"没有找到文件，请检查文件路径"<<endl; while( k != -1 ) { cout << file.name << endl; cout<<file.size<<endl; k = _findnext( HANDLE, &file ); } _findclose( HANDLE ); return 0; } int environment() { extern char ** environ; char **ep = environ; while(*ep != NULL) { printf("%s\n",*ep); ep++; } cout<< _getcwd(NULL,0)<<endl; _chdir("D:\\"); cout<< _getcwd(NULL,0)<<endl; return 0; }