method

spawn

v1_9_3_392 - Show latest stable - 0 notes - Class: PTY

spawn(*args) public

Spawns the specified command on a newly allocated pty.

The command’s controlling tty is set to the slave device of the pty and its standard input/output/error is redirected to the slave device.

`command_line`	The full command line to run
`command`	The command to run, as a String.
`args`	Zero or more arguments, as Strings, representing the arguments to `command`

In the non-block form this returns an array of size three, [r, w, pid]. In the block form the block will be called with these as arguments, |r,w,pid|:

`r`	An IO that can be read from that contains the command’s standard output and standard error
`w`	An IO that can be written to that is the command’s standard input
`pid`	The process identifier for the command.

Show source

static VALUE
pty_getpty(int argc, VALUE *argv, VALUE self)
{
    VALUE res;
    struct pty_info info;
    rb_io_t *wfptr,*rfptr;
    VALUE rport = rb_obj_alloc(rb_cFile);
    VALUE wport = rb_obj_alloc(rb_cFile);
    char SlaveName[DEVICELEN];

    MakeOpenFile(rport, rfptr);
    MakeOpenFile(wport, wfptr);

    establishShell(argc, argv, &info, SlaveName);

    rfptr->mode = rb_io_mode_flags("r");
    rfptr->fd = info.fd;
    rfptr->pathv = rb_obj_freeze(rb_str_new_cstr(SlaveName));

    wfptr->mode = rb_io_mode_flags("w") | FMODE_SYNC;
    wfptr->fd = dup(info.fd);
    if (wfptr->fd == -1)
        rb_sys_fail("dup()");
    rb_update_max_fd(wfptr->fd);
    wfptr->pathv = rfptr->pathv;

    res = rb_ary_new2(3);
    rb_ary_store(res,0,(VALUE)rport);
    rb_ary_store(res,1,(VALUE)wport);
    rb_ary_store(res,2,PIDT2NUM(info.child_pid));

    if (rb_block_given_p()) {
        rb_ensure(rb_yield, res, pty_detach_process, (VALUE)&info);
        return Qnil;
    }
    return res;
}

spawn

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