int init_loop(t_plist *plist, t_cmd *cmd, int n, char **env)
{
int i;
int fd[2];
int in_out[2];
in_out[0] = 0;
i = -1;
while (++i < n -1)
{
pipe(fd);
in_out[1] = fd[1];
loop_pipe(plist, in_out, cmd->cmd, env);
cmd = cmd->next;
close (fd[1]);
in_out[0] = fd[0];
}
if (in_out[0] != 0)
dup2(in_out[0], 0);
return (check_action(cmd->cmd, env, plist));
}
int execute_pipe(char *str)
{
char **put_in_sst;
char ***temp;
if (str)
{
put_in_sst = put_in_ss(str);
if (put_in_sst)
{
temp = put_in_sss(put_in_sst);
if (temp)
{
loop_pipe(temp);
freed(temp);
}
ft_free2d(put_in_sst);
}
return (1);
}
else
put_str(ANSI_COLOR_RED"str passed to pipe is 'NULL'"ANSI_COLOR_RESET);
return (0);
}
int main(int argc, char *argv[])
{
//struct rusage usage;
int status,i,l,j,ii,length,l1,l2,controld,start,end,bpid;
char *input_str;
char c;
int internal=0;
int job_no;
char **ncomms;
char **args_copy;
char prompt[1000];
char user[100],host[100];
pid_t pid;
controld=0;
//createsignal();
shell_pgid=getpid();
if (setpgid (shell_pgid, shell_pgid) < 0)
{
perror ("Couldn't put the shell in its own process group");
exit (1);
}
// handle sigint with hello
signal(SIGINT, SIG_IGN);
if(getcwd(home, sizeof(home))!=NULL)
{
while(1)
{
position=0;
backexit=0;
// back_index=0;
flag=0;
// printf("<prachi@LenovoG500s");
if(controld==0)
printprompt();
controld=0;
for(i=0;i<1000;i++)
prompt[i]='\0';
if(getcwd(prompt, sizeof(prompt))!=NULL)
{
input_str=get_input();
if(input_str[0]!='\0')
{i=0;
ncomms=split_input3(input_str,1);
position=ind;
while(position--)
{
// printf("pid: %d\n",shell_pgid);
internal=0;
// args contains the "pipe" parsed commands
args=split_input3(ncomms[i],2);
if(args[0]!="\0");
{
// check for built in commands
if(args[0][0]=='c' && args[0][1]=='d')
internal=1;
else if(args[0][0]=='e' && args[0][1]=='x' && args[0][2]=='i' && args[0][3]=='t')
internal=1;
else if(args[0][0]=='e' && args[0][1]=='c' && args[0][2]=='h' && args[0][3]=='o')
internal=1;
else if(args[0][0]=='p' && args[0][1]=='w' && args[0][2]=='d')
internal=1;
else if(args[0][0]=='q' && args[0][1]=='u' && args[0][2]=='i' && args[0][3]=='t')
internal=1;
else if(args[0][0]=='f' && args[0][1]=='g')
{
// printf("fg\n");
internal=-1;
}
if(internal!=1 && internal!=-1)
{
int len;
len=strlen(args[0]);
if(args[0][len-1]=='&')
back_mark=1;
pid=fork();
if(pid==0)
loop_pipe(args);
else if(pid<0)
perror("myshell");
else
{
if(back_mark!=1)
waitpid(pid,&status, WUNTRACED);
else
{
signal(SIGCHLD, childhandler);
strcpy(copy,args[0]);
len=strlen(copy);
copy[len-1]='\0';
strcpy(back_job[back_index].processname,copy);
// printf("args: %s",args[0]);
back_job[back_index].pro_id=pid;
back_job[back_index].back_active=1;
back_index++;
back_mark=0;
// storing background processes data(pid , name) into an array
printf("%d\n",pid);
}
}
}
else if(internal==1)
{
args=split_input2(args[0]);
// if built-in commands
execute_internal(flag);
}
else if(internal==-1)
{
// execute fg
pid_t fpid;
int status;
args=split_input2(args[0]);
fpid = execute_fg(atoi(args[1]));
// printf("fpid: %d\n",fpid);
if(fpid>0)
{
kill(fpid, SIGCONT);
waitpid(fpid,&status,WCONTINUED);
}
}
}
i++;
}
free(input_str);
free(args);
}
else
controld=1;
}
else
perror("myshell:");
}
}
else
{ perror("myshell:");
return EXIT_SUCCESS;
}
return 0;
}
