IABSD.fr/xenocara/app/cwm/util.c

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• Author : okan
  Date : 2009-12-15 04:10:42
  Hash : ba93a73a
  Message : pull all non-X11 headers from calmwm.h and place them only where they are required. encourged to go all the way by oga@

• app/cwm/util.c

• /*
   * calmwm - the calm window manager
   *
   * Copyright (c) 2004 Marius Aamodt Eriksen <marius@monkey.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   *
   * $Id: util.c,v 1.12 2009/12/15 04:10:42 okan Exp $
   */
  
  #include <sys/param.h>
  #include <sys/queue.h>
  
  #include <err.h>
  #include <errno.h>
  #include <stdlib.h>
  #include <string.h>
  #include <stdio.h>
  #include <unistd.h>
  
  #include "calmwm.h"
  
  #define MAXARGLEN 20
  
  int
  u_spawn(char *argstr)
  {
  	switch (fork()) {
  	case 0:
  		u_exec(argstr);
  		err(1, "%s", argstr);
  		break;
  	case -1:
  		warn("fork");
  		return (-1);
  	default:
  		break;
  	}
  
  	return (0);
  }
  
  void
  u_exec(char *argstr)
  {
  	char	*args[MAXARGLEN], **ap = args;
  	char	**end = &args[MAXARGLEN - 1], *tmp;
  
  	while (ap < end && (*ap = strsep(&argstr, " \t")) != NULL) {
  		if (**ap == '\0')
  			continue;
  		ap++;
  		if (argstr != NULL) {
  			/* deal with quoted strings */
  			switch(argstr[0]) {
  			case '"':
  			case '\'':
  				if ((tmp = strchr(argstr + 1, argstr[0]))
  				    != NULL) {
  					*(tmp++) = '\0';
  					*(ap++) = ++argstr;
  					argstr = tmp;
  				}
  				break;
  			default:
  				break;
  			}
  		}
  	}
  
  	*ap = NULL;
  	setsid();
  	execvp(args[0], args);
  }