linux shell窗口工具-qt5源码

#include "mainwindow.h" #include "ui_mainwindow.h" #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #include <sys/wait.h> extern "C" { #include <pthread.h> } #include <memory.h> #include <sys/stat.h> #define FIFO "myfifo" char g_cmdstr[128][128]; char g_cmddscstr[128][128]; char g_parastr[128][128]; QString g_Qcmd; QString g_Qpara; MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); strcpy(g_cmdstr[0],"apt-get"); strcpy(g_cmddscstr[0],"释放删除软件的空间"); strcpy(g_parastr[0],"autoremove"); strcpy(g_cmdstr[1],"apt-get"); strcpy(g_cmddscstr[1],"释放已经卸载软件包的安装文件"); strcpy(g_parastr[1],"autoclean"); strcpy(g_cmdstr[2],"apt-get"); strcpy(g_cmddscstr[2],"删除安装的软件的备份"); strcpy(g_parastr[2],"clean"); ui->comboBox->addItem(g_cmddscstr[0]); ui->comboBox->addItem(g_cmddscstr[1]); ui->comboBox->addItem(g_cmddscstr[2]); int i=3; strcpy(g_cmdstr[i],"df"); strcpy(g_cmddscstr[i],"查看硬盘空间"); strcpy(g_parastr[i],"-h"); ui->comboBox->addItem(g_cmddscstr[i]); i++; strcpy(g_cmdstr[i],"free"); strcpy(g_cmddscstr[i],"查看memory"); strcpy(g_parastr[i],"-m"); ui->comboBox->addItem(g_cmddscstr[i]); i++; strcpy(g_cmdstr[i],"uname"); strcpy(g_cmddscstr[i],"查看 version"); strcpy(g_parastr[i],"-r"); ui->comboBox->addItem(g_cmddscstr[i]); i++; strcpy(g_cmdstr[i],"ps"); strcpy(g_cmddscstr[i],"查看all process aux"); strcpy(g_parastr[i],"aux"); ui->comboBox->addItem(g_cmddscstr[i]); i++; strcpy(g_cmdstr[i],"ps"); strcpy(g_cmddscstr[i],"查看all process"); strcpy(g_parastr[i],"-ef"); ui->comboBox->addItem(g_cmddscstr[i]); i++; strcpy(g_cmdstr[i],"ps"); strcpy(g_cmddscstr[i],"查看term process"); strcpy(g_parastr[i],"-s"); ui->comboBox->addItem(g_cmddscstr[i]); i++; strcpy(g_cmdstr[i],"ls"); strcpy(g_cmddscstr[i],"查看目录下文件"); strcpy(g_parastr[i],""); ui->comboBox->addItem(g_cmddscstr[i]); i++; strcpy(g_cmdstr[i],"ls"); strcpy(g_cmddscstr[i],"查看目录下隐藏文件"); strcpy(g_parastr[i],"-a"); ui->comboBox->addItem(g_cmddscstr[i]); i++; strcpy(g_cmdstr[i],"ls"); strcpy(g_cmddscstr[i],"查看目录下文件详细情况"); strcpy(g_parastr[i],"-l"); ui->comboBox->addItem(g_cmddscstr[i]); i++; strcpy(g_cmdstr[i],"man"); strcpy(g_cmddscstr[i],"查看命令帮助"); strcpy(g_parastr[i],"ls"); ui->comboBox->addItem(g_cmddscstr[i]); } MainWindow::~MainWindow() { delete ui; } void MainWindow::on_pbtn_run_clicked() { ui->textEdit->clear(); //runfork(); //ok runsystem(); //ok2 } char* MainWindow::cmd_system(const char* command) { char* result = ""; FILE *fpRead; fpRead = popen(command, "r"); char buf[1024]; memset(buf,'\0',sizeof(buf)); while(fgets(buf,1024-1,fpRead)!=NULL) { //buf[strlen(buf)-1]=0; //去掉0x0a if(buf[strlen(buf)-1]==0x0a) buf[strlen(buf)-1]=0; //去掉0x0a ui->textEdit->append(buf); result = buf; } if(fpRead!=NULL) pclose(fpRead); return result; } void MainWindow::runsystem() { pid_t pc,pr; char cmdbuf[200],parabuf[200],tmp[512]; //ui->ledt_cmd.text(); QString cmdstr= ui->ledt_cmd->text(); QString parastr=ui->ledt_para->text(); int apipe[2],i,len; char buf[BUFSIZ]; //ctrl+BUFSIZ find BUFSIZ=8192 memset(buf,0,BUFSIZ); for(i=0;i<200;i++) { cmdbuf[i]=0; parabuf[i]=0; } strcpy(cmdbuf ,cmdstr.toLocal8Bit().data() ); strcpy(parabuf ,parastr.toLocal8Bit().data() ); memset(tmp,0,512); strcpy(tmp,cmdbuf); strcat(tmp," "); strcat(tmp,parabuf); ui->textEdit->append(tmp); cmd_system(tmp); } void MainWindow::runfork() { pid_t pc,pr; char cmdbuf[200],parabuf[200],tmp[512]; //ui->ledt_cmd.text(); QString cmdstr= ui->ledt_cmd->text(); QString parastr=ui->ledt_para->text(); int apipe[2],i,len; char buf[BUFSIZ]; //ctrl+BUFSIZ find BUFSIZ=8192 memset(buf,0,BUFSIZ); for(i=0;i<200;i++) { cmdbuf[i]=0; parabuf[i]=0; } strcpy(cmdbuf ,cmdstr.toLocal8Bit().data() ); strcpy(parabuf ,parastr.toLocal8Bit().data() ); //if(parabuf[0]=='\0') // parabuf[0]=0; if(pipe(apipe) == -1){ // 创建一个管道:apipe[0]读，apipe[1]写 // 数据流向:读 <--- 写, 即apipe[1]流向apipe[0] perror("pipe"); // 如果创建失败，输出错误原因，退出 exit(0); } memset(tmp,0,512); strcpy(tmp,">"); strcat(tmp,cmdbuf); strcat(tmp," "); strcat(tmp,parabuf); ui->textEdit->append(tmp); pc = fork() ; //if ( fork() == 0 ) { if ( pc == 0 ) { ::close(1); dup2( apipe[1], 1 ); ::close( apipe[0] ); if(parabuf[0]=='\0') execlp( cmdbuf, cmdbuf, NULL, NULL ); //ok //can run "apt-get clean",and not die. can run "ls" else execlp( cmdbuf, cmdbuf, parabuf, NULL ); //ok exit(0); } else { ::close(0); dup2( apipe[0], 0 ); ::close( apipe[1] ); //wait child exit!!! int flags = fcntl(apipe[0],F_GETFL); fcntl(apipe[0],F_SETFL,flags|O_NONBLOCK); //非阻塞设置 while(1) { //一次读256字节，不判断回车和换行 //mabao i=read(apipe[0],buf,256); //从apipe[0]中读取数据 ok good //一次读1字节，判断回车和换行 char tmpbuf; int t=0; i=0; t=read(apipe[0],&tmpbuf,1); //从apipe[0]中读取数据 ok good while(t>0) { buf[i]=tmpbuf; i=i+t; t=read(apipe[0],&tmpbuf,1); //if(tmpbuf==0x0d) break; if(tmpbuf==0x0a) break; //ok } if(i>0){ ui->textEdit->append(QString::fromLocal8Bit(buf,i)); //ok continue; } //sleep(1); //do {// 使用了WNOHANG参数，waitpid不会在这里等待 pr=waitpid(pc,NULL,WNOHANG); if (pr==0) { //printf("No child exit\n"); //mabao sleep(1); usleep(10); } //}while (pr==0); if(pr != 0){ if (pr==pc) printf("successfully get child %d\n",pr); else printf("wait child error\n"); break; } }//end while ui->textEdit->append(">"); } //return 0; } void MainWindow::on_comboBox_currentIndexChanged(int index) { ui->ledt_cmd->setText(QString::fromLocal8Bit(g_cmdstr[index],strlen(g_cmdstr[index]))); ui->ledt_para->setText(QString::fromLocal8Bit(g_parastr[index],strlen(g_parastr[index]))); }