text: /* Copyright (c) 2013, Bastien Dejean
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   *    this list of conditions and the following disclaimer in the documentation
   *    and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <stdarg.h>
  #include <string.h>
  #include <unistd.h>
  #include <ctype.h>
  #include <sys/wait.h>
  #include "sxhkd.h"
  #include "helpers.h"
  
  void warn(char *fmt, ...)
  {
  	va_list ap;
  	va_start(ap, fmt);
  	vfprintf(stderr, fmt, ap);
  	va_end(ap);
  }
  
  __attribute__((noreturn))
  void err(char *fmt, ...)
  {
  	va_list ap;
  	va_start(ap, fmt);
  	vfprintf(stderr, fmt, ap);
  	va_end(ap);
  	exit(EXIT_FAILURE);
  }
  
  void run(char *command, bool sync)
  {
  	char *cmd[] = {shell, "-c", command, NULL};
  	spawn(cmd, sync);
  }
  
  void spawn(char *cmd[], bool sync)
  {
  	if (fork() == 0) {
  		if (dpy != NULL)
  			close(xcb_get_file_descriptor(dpy));
  		if (sync) {
  			execute(cmd);
  		} else {
  			if (fork() == 0) {
  				execute(cmd);
  			}
  			exit(EXIT_SUCCESS);
  		}
  	}
  	wait(NULL);
  }
  
  void execute(char *cmd[])
  {
  	setsid();
  	if (redir_fd != -1) {
  		dup2(redir_fd, STDOUT_FILENO);
  		dup2(redir_fd, STDERR_FILENO);
  	}
  	execvp(cmd[0], cmd);
  	err("Spawning failed.\n");
  }
  
  char *lgraph(char *s)
  {
  	size_t len = strlen(s);
  	unsigned int i = 0;
  	while (i < len && !isgraph(s[i]))
  		i++;
  	if (i < len)
  		return (s + i);
  	else
  		return NULL;
  }
  
  char *rgraph(char *s)
  {
  	int i = strlen(s) - 1;
  	while (i >= 0 && !isgraph(s[i]))
  		i--;
  	if (i >= 0)
  		return (s + i);
  	else
  		return NULL;
  }
  