/* *******************************************************************
 *                                                                   *
 * Copyright (c) L-DGO/MIT/JGOFS                                     *
 *                                                                   *
 *                                                                   *
 * File             : ex.c                                           *
 *                                                                   *
 * Purpose          :                                                *
 *                                                                   *
 * Version Number   : 1.3                                            *
 *                                                                   *
 * Date                              Developer                       *
 * ----                              ---------                       *
 *                                                                   *
 * Sat Oct 17  1992 10.00           Glenn Flierl                     *
 *                                                                   *
 * Revision History :                                                *
    25 Jan 12.  WJS
	Replace getwd with getcwd per "deprecated" warning
	[begin 1.3]
    22 May 08.  WJS
        Include some .h files to get rid of compiler diagnostics
        Calculate the size of the com buffer and allocate that much
                (replaces fixed size 160 char buffer)
        Abort on some failures
        [begin 1.2]
 *                                                                   *
 *                                                                   *
 ******************************************************************* */

#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <limits.h>

void ex_(stuff)
char *stuff;
{
  char *com;
  size_t bufsiz;

    /*   "cd " longest getwd ";"                 \0             */
  bufsiz = 3 + (PATH_MAX+1) + 1 + strlen(stuff) + 1;
  com = (char *)malloc(bufsiz);
  if (com == NULL) abort();

  strcpy(com,"cd ");
  if (getcwd(com+3,bufsiz-3) == NULL) abort();
  strcat(com,";");
  strcat(com,stuff);

  system(com);
  return;
}