/* test-XGetIMValues: test case for XGetIMValues()
 *
 * Copyright (C) 2010  Yann Droneaud <yann@droneaud.fr>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * Author: Yann Droneaud <yann@droneaud.fr>
 *
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>

#include <langinfo.h>
#include <locale.h>

#include <X11/Xlib.h>
#include <X11/Xutil.h>

int
main(void)
{
  Display *display;
  XIM im;

  XIMValuesList *imvl = NULL;
  XIMStyles *ims = NULL;
  XIMValuesList *icvl = NULL;

  char *name;
  char *p;
 
  char *invalid_name = "INVALID";
  /* warning: don't test this on big endian */
  void *invalid_arg = (void *) 0x004c754e; /* "NuL" */

  setlocale(LC_ALL, "");

  if (XSupportsLocale()) {
    printf("XLib support current locale\n");
  } else {
    printf("Warning: XLib does support current locale: %s\n", 
           setlocale(LC_ALL, NULL));
  }

  display = XOpenDisplay(NULL);
  if (display == NULL) {
    fprintf(stderr, "Can't open display '%s'\n", XDisplayName(NULL));
    return 1;
  }

  p = XSetLocaleModifiers("");
  if (p == NULL) {
    p = XSetLocaleModifiers("@im=none");
  }

  if (p) {
    printf("Current locale modifier '%s'\n", p);
  } else {
    printf("can't set locale modifiers\n");
  }

  im = XOpenIM(display, NULL, NULL, NULL);
  if (im == NULL) {
    p = XSetLocaleModifiers("@im=none");
    im = XOpenIM(display, NULL, NULL, NULL);
  }

  if (im == NULL) {
    fprintf(stderr, "Can't open IM: leaving\n");
    XCloseDisplay(display);
    return 1;
  }

  /* retrieve some values, and get an error */
  name = XGetIMValues(im, 
		      XNQueryIMValuesList, &imvl, 
		      XNQueryInputStyle, &ims,
		      XNQueryICValuesList, &icvl,
		      invalid_name, &invalid_arg, 
		      NULL);
  if (name != NULL) {
      /* 
       * name should point to the name 
       * of the values which was not retrieved, eg. "INVALID"
       */
      printf("XGetIMValues() returned: %p '%s'\n"
	     "      invalid name was : %p '%s'\n"
	     "      invalid arg  was : %p\n", 
	     name, name, 
	     invalid_name, invalid_name, 
	     &invalid_arg);

      if (name == (char *) &invalid_arg) {
	fprintf(stderr, "ERROR: XGetIMValues() returned address of argument instead of its name\n");
	fprintf(stderr, "ERROR: valid function return would be: %p '%s'\n", invalid_name, invalid_name);
      }
  }

  XFree(imvl);
  XFree(ims);
  XFree(icvl);

  XCloseIM(im);

  XCloseDisplay(display);

  return 0;
}