本文整理汇总了C++中Parse::pipeThese方法的典型用法代码示例。如果您正苦于以下问题：C++ Parse::pipeThese方法的具体用法？C++ Parse::pipeThese怎么用？C++ Parse::pipeThese使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Parse的用法示例。
在下文中一共展示了Parse::pipeThese方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
int main()
{
cout << "\nRunning Daniel's Shell\n" << "Created by dyc8av\n" << endl;
//while there is still input from the user
while(true) {
Parse p; // create parse in order to call methods from
string input = ""; // where raw input is stored
char* cinput = NULL;
vector<pid_t> spid;
int status;
vector<string> sTokens; //where tokens are stored unorganized
int nTokens = 0;
getline(cin,input);
// -------------------- parsing input --------------------------
if(cin.eof()) { // break if end-of-file
exit(0);
}
else if(input == "exit") { // break if "exit"
exit(0);
}
else if(input.length() > 100) { // reload while loop if over 100 characters
cout << "Your input is over 100 characters." << endl;
continue;
}
else if(!p.legalChar(input)) { // reload while loop of invalid characters
cout << "Your input contains invalid characters." << endl;
continue;
}
else if (!p.checkPipe(input)) { // check pipe location is valid
cout << "Your input ends in a pipe!" << endl;
continue;
}
else if (!p.checkIn(input)) { // check if < location is valid
cout << "Your input ends in an operator!" << endl;
continue;
}
else if (!p.checkOut(input)) { // check if > location is valid
cout << "Your input ends in an operator!" << endl;
continue;
}
else {
//parse the input line into appropiate tokens
cinput = new char[input.size() +1];
strcpy(cinput,input.c_str());
char* tokens = strtok(cinput," ");
while(tokens != NULL) { //read and split into tokens
sTokens.push_back(strdup(tokens));
nTokens++;
tokens = strtok(NULL," ");
}
// ---------------------- end parsing -------------------------------
//create vector of list of inputs to be execv()
//combine into token groups with operators
vector< vector<string> > tokenVec = p.tokenGroup(sTokens,nTokens);
//execv the commands
for(int i = 0; i < tokenVec.size(); i++) {
// if the command is a pipe
if(tokenVec[i][0] == "|") {
const char **lastVec1 = p.changev(tokenVec[i-1]);
const char **lastVec2 = p.changev(tokenVec[i+1]);
p.pipeThese((char **) lastVec1,(char **) lastVec2);
}
// if direction in
else if(tokenVec[i][0] == "<") {
const char **execVec = p.changev(tokenVec[i-1]);
const char **fileVec = p.changev(tokenVec[i+1]);
p.redirectIN((char **) execVec, fileVec[0]);
}
// if direction out
else if(tokenVec[i][0] == ">") {
const char **execVec = p.changev(tokenVec[i-1]);
const char **fileVec = p.changev(tokenVec[i+1]);
p.redirectOUT((char **) execVec, fileVec[0]);
}
else {
if(i < tokenVec.size()-1) {
// check if next token is a command, then wait to execv() that command
if(tokenVec[i+1][0] == "|" || tokenVec[i+1][0] == ">" || tokenVec[i+1][0] == "<" ) {
continue;
}
else {
pid_t pid;
pid = fork(); // fork the process
if(pid == 0) {// child
//convert vector<string> to appropiate format
const char **lastVec = p.changev(tokenVec[i]);
execv(lastVec[0], (char **) lastVec);
}
else {
spid.push_back(pid);
}
}
//.........这里部分代码省略.........