IABSD.fr/xenocara/app/xlsfonts/dsimple.c

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• Author : matthieu
  Date : 2022-06-26 10:39:25
  Hash : 9640aa62
  Message : Update xlsfonts to version 1.0.7 Bug fixes + gcc warnings removal

• app/xlsfonts/dsimple.c

• /*
  
  Copyright 1993, 1998  The Open Group
  
  Permission to use, copy, modify, distribute, and sell this software and its
  documentation for any purpose is hereby granted without fee, provided that
  the above copyright notice appear in all copies and that both that
  copyright notice and this permission notice appear in supporting
  documentation.
  
  The above copyright notice and this permission notice shall be included
  in all copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  OTHER DEALINGS IN THE SOFTWARE.
  
  Except as contained in this notice, the name of The Open Group shall
  not be used in advertising or otherwise to promote the sale, use or
  other dealings in this Software without prior written authorization
  from The Open Group.
  
  */
  
  #include <X11/Xos.h>
  #include <X11/Xlib.h>
  #include <X11/Xutil.h>
  #include <X11/cursorfont.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <stdarg.h>
  /*
   * Other_stuff.h: Definitions of routines in other_stuff.
   *
   * Written by Mark Lillibridge.   Last updated 7/1/87
   */
  
  #include "dsimple.h"
  
  /*
   * Just_display: A group of routines designed to make the writing of simple
   *               X11 applications which open a display but do not open
   *               any windows much faster and easier.  Unless a routine says
   *               otherwise, it may be assumed to require program_name, dpy,
   *               and screen already defined on entry.
   *
   * Written by Mark Lillibridge.   Last updated 7/1/87
   */
  
  /* This stuff is defined in the calling program by just_display.h */
  const char *program_name = "unknown_program";
  Display *dpy = NULL;
  int screen = 0;
  
  /*
   * Get_Display_Name (argc, argv) Look for -display, -d, or host:dpy (obsolete)
   * If found, remove it from command line.  Don't go past a lone -.
   */
  static char *
  Get_Display_Name(int *pargc /* MODIFIED */, char **argv /* MODIFIED */)
  {
      int argc = *pargc;
      char **pargv = argv + 1;
      char *displayname = NULL;
      int i;
  
      for (i = 1; i < argc; i++) {
          char *arg = argv[i];
  
          if (!strcmp(arg, "-display") || !strcmp(arg, "-d")) {
              if (++i >= argc)
                  usage("-display requires an argument");
  
              displayname = argv[i];
              *pargc -= 2;
              continue;
          }
          if (!strcmp(arg, "-")) {
              while (i < argc)
                  *pargv++ = argv[i++];
              break;
          }
          *pargv++ = arg;
      }
  
      *pargv = NULL;
      return (displayname);
  }
  
  
  /*
   * Open_Display: Routine to open a display with correct error handling.
   *               Does not require dpy or screen defined on entry.
   */
  static Display *
  Open_Display(char *display_name)
  {
      Display *d;
  
      d = XOpenDisplay(display_name);
      if (d == NULL) {
          fprintf(stderr, "%s:  unable to open display '%s'\n",
                  program_name, XDisplayName(display_name));
          exit(1);
      }
  
      return (d);
  }
  
  
  /*
   * Setup_Display_And_Screen: This routine opens up the correct display (i.e.,
   *                           it calls Get_Display_Name) and then stores a
   *                           pointer to it in dpy.  The default screen
   *                           for this display is then stored in screen.
   *                           Does not require dpy or screen defined.
   */
  void
  Setup_Display_And_Screen(int *argc /* MODIFIED */, char **argv /* MODIFIED */)
  {
      char *displayname = Get_Display_Name(argc, argv);
  
      dpy = Open_Display(displayname);
      screen = XDefaultScreen(dpy);
  }
  
  /*
   * Close_Display: Close display
   */
  void
  Close_Display(void)
  {
      if (dpy == NULL)
          return;
  
      XCloseDisplay(dpy);
      dpy = NULL;
  }
  
  /*
   * Standard fatal error routine - call like printf but maximum of 7 arguments.
   * Does not require dpy or screen defined.
   */
  void
  Fatal_Error(const char *msg, ...)
  {
      va_list args;
  
      fflush(stdout);
      fflush(stderr);
      fprintf(stderr, "%s: error: ", program_name);
      va_start(args, msg);
      vfprintf(stderr, msg, args);
      va_end(args);
      fprintf(stderr, "\n");
      Close_Display();
      exit(EXIT_FAILURE);
  }