int executor::runCom(command& thisCom,BuildIn& shellBuild)
{
int myPid[10];
int cpos=0,rpos=0;
if(cpos>=thisCom.tokLen) return(0);
char path[]="PATH=/bin:/usr/bin:./";
putenv(path);
if(thisCom.toks[0]->cat==9){
if(thisCom.toks[0]->tok.compare("cd")==0){
shellBuild.handleCD(thisCom);
}else if(thisCom.toks[0]->tok.compare("exit")==0){
shellBuild.handleExit(thisCom);
}else if(thisCom.toks[0]->tok.compare("fg")==0){
shellBuild.handleFG(thisCom);
}else if(thisCom.toks[0]->tok.compare("jobs")==0){
shellBuild.handleJobs(thisCom);
}else{
cout << "Error: Invalid Build-In\n";
}
}else if(thisCom.toks[0]->cat==8)
{
thisCom.getNextCom(cpos);
inRed.checkRed(thisCom,cpos,thisCom.tokLen);
outRed.checkRed(thisCom,cpos,thisCom.tokLen);
inRed.checkRed(thisCom,cpos,thisCom.tokLen);
outRed.checkRed(thisCom,cpos,thisCom.tokLen);
thisCom.getAllRecur(cpos);
outRed.checkRed(thisCom,cpos,thisCom.tokLen);
pipef.creatPipe(thisCom.pipeLen-1);
while(rpos<thisCom.pipeLen)
{
myPid[rpos]=fork();
if (myPid[rpos]==-1)
{
cout<<"Can not create new process\n";
exit(-1);
}
else if(myPid[rpos]==0)
{
signal(SIGINT,SIG_DFL);
signal(SIGTSTP,SIG_DFL);
if(debugmode) cout<<"This is child "<<rpos<<"\n";
pipef.setPipe(rpos);
if(rpos==0)
if(inRed.setInRed()!=0) exit(-1);
if(rpos==thisCom.pipeLen-1)
if(outRed.setOutRed()!=0) exit(-1);
if(debugmode) cout<<"Child "<<rpos<<" "<<thisCom.pipeArg[rpos][0]<<" jump to new process\n";
if(execvp(thisCom.pipeArg[rpos][0],thisCom.pipeArg[rpos])==-1)
{
if(errno==ENOENT)
{
cerr<<thisCom.pipeArg[rpos][0]<<": command not found\n";
}
else
{
cerr<<thisCom.pipeArg[rpos][0]<<": unknown error\n";
}
}
exit(-1);
}
else
{
if(debugmode) cout<<"This is father after "<<rpos<<" fork\n";
rpos++;
}
}
if(debugmode) cout<<"Father return after wait\n";
string comName="";
for (int i=0; i<thisCom.tokLen; i++)
{
if (i!=0) comName+=" ";
comName+=thisCom.toks[i]->tok;
}
for(int i=thisCom.pipeLen; i<10; i++) myPid[i]=-1;
int fd[2],fd2[2];
if(thisCom.pipeLen<3)
{
fd2[0]=-1; fd2[1]=-1;
}
else
{
fd2[0]=pipef.pipefd[1][0];
fd2[1]=pipef.pipefd[1][1];
}
if(thisCom.pipeLen<2)
{
fd[0]=-1; fd[1]=-1;
}
else
{
fd[0]=pipef.pipefd[0][0];
fd[1]=pipef.pipefd[0][1];
}
shellBuild.waitingFor(comName,myPid,fd,fd2);
inRed.reSet();
outRed.reSet();
}
return 0;
}
