# HG changeset patch
# User John "Elwin" Edwards
# Date 1388603590 18000
# Node ID 8d6bf19d82272aa8913e3a50d95e54783700080e
# Parent  5baa2d4d798bcb0998976a5a81c0fb61e54ec4d9
Remove ptyhelper.c because the pty module has replaced it.

diff -r 5baa2d4d798b -r 8d6bf19d8227 ptyhelper.c
--- a/ptyhelper.c	Wed Jan 01 14:11:40 2014 -0500
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,155 +0,0 @@
-/*
- * ptyhelper: a utility that runs a command in a pseudoterm and then streams
- * stdio to/from it.  Intended to get around the node.js loss of C/UNIX 
- * functionality.
- * Remember to compile with -lutil.
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <signal.h>
-#include <pty.h>
-#include <utmp.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/select.h>
-#include <termios.h>
-
-int got_sighup = 0;
-
-void handle_HUP(int signum) {
-  if (signum == SIGHUP)
-    got_sighup = 1;
-  return;
-}
-
-int main(int argc, char *argv[]) {
-
-  int ptymaster, ptyslave; /* File descriptors */
-  int child;
-  int status, selstatus;
-  int w = 80, h = 24, t;
-  struct sigaction sighup_act;
-  fd_set readset;
-  struct timeval select_time;
-  char buf[4096];
-  int nread;
-  char *penv, *ptmp;
-#if 0
-  struct termios ptysettings;
-#endif
-  struct winsize ptysize;
-
-  if (argc == 1) {
-    fprintf(stderr, "No command given.\n");
-    exit(1);
-  }
-
-  /* Set up the signal handler. */
-  sighup_act.sa_handler = &handle_HUP;
-  sighup_act.sa_flags = SA_RESTART;
-  sigaction(SIGHUP, &sighup_act, NULL);
-
-  /* Check the environment for configuration options. */
-  penv = getenv("PTYHELPER");
-  if (penv != NULL) {
-    t = strtol(penv, &ptmp, 10);
-    if (t > 0 && t < 256)
-      h = t;
-    if (*ptmp != '\0') {
-      penv = ptmp + 1;
-      t = strtol(penv, &ptmp, 10);
-      if (t > 0 && t < 256)
-        w = t;
-    }
-  }
-  /* Set up the size. */
-  ptysize.ws_row = h;
-  ptysize.ws_col = w;
-
-  /* Open a pty */
-  if (openpty(&ptymaster, &ptyslave, NULL, NULL, &ptysize)) {
-    return 1;
-  }
-#if 0
-  /* Put it into raw mode. */
-  tcgetattr(ptyslave, &ptysettings);
-  cfmakeraw(&ptysettings);
-  tcsetattr(ptyslave, TCSANOW, &ptysettings);
-#endif
-
-  /* Start the child */
-  /* forkpty() might be more convenient. */
-  if (!(child = fork())) {
-    /* Child process */
-    login_tty(ptyslave);
-    close(ptymaster);
-    execvp(argv[1], argv + 1);
-    perror("execvp() failed");
-    return 1;
-  }
-  close(ptyslave);
-
-  while (1) {
-    /* Now do a select() over stdin and ptymaster, and write anything that 
-     * appears to ptymaster and stdout respectively. */
-    FD_ZERO(&readset);
-    FD_SET(0, &readset);
-    FD_SET(ptymaster, &readset);
-    select_time.tv_sec = 1;
-    select_time.tv_usec = 0;
-    selstatus = select(ptymaster + 1, &readset, NULL, NULL, &select_time);
-    if (selstatus > 0) {
-      /* TODO make sure it all gets written if a signal interrupts write(). */
-      if (FD_ISSET(0, &readset)) {
-        nread = read(0, buf, 4096);
-        if (nread > 0) {
-          write(ptymaster, buf, nread);
-        }
-      }
-      if (FD_ISSET(ptymaster, &readset)) {
-        nread = read(ptymaster, buf, 4096);
-        if (nread > 0) {
-          write(1, buf, nread);
-        }
-      }
-    }
-
-    /* Periodically check to see if we're done. */
-    /* TODO: catch SIGCHLD and only wait() if it is delivered. */
-    if (waitpid(child, &status, WNOHANG)) {
-      break;
-    }
-
-    /* If node sighup's us, pass it along. */
-    if (got_sighup) {
-      kill(child, SIGHUP);
-    }
-  }
-
-  /* Get any leftover output and clean up. */
-  /* FIXME looping over select() is pointless if there's only one fd that
-   * nothing's writing to.  Just loop over read() until it's empty. */
-  while (1) {
-    FD_ZERO(&readset);
-    FD_SET(ptymaster, &readset);
-    select_time.tv_sec = 0;
-    select_time.tv_usec = 0;
-    if (select(ptymaster + 1, &readset, NULL, NULL, &select_time) > 0) {
-      nread = read(ptymaster, buf, 4096);
-      if (nread > 0) {
-        write(1, buf, nread);
-      }
-      else
-        break;
-    }
-    else
-      break;
-  }
-  close(ptymaster);
-
-  /* Return the child's exit status. */
-  if (WIFEXITED(status))
-    return WEXITSTATUS(status);
-  return 0;
-}