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#include "xkb_util.h"

/*
// check compile time library version
int
xcb_xkb_util_library_version(int *lib_major_in_out, int *lib_minor_in_out) {

}
*/

xcb_xkb_use_extension_reply_t *
xcb_xkb_util_query_extension(xcb_connection_t     *c, 
			     uint16_t              wantedMajor,
			     uint16_t              wantedMinor,
			     xcb_generic_error_t **error) {
  xcb_xkb_use_extension_cookie_t use_xkb = xcb_xkb_use_extension(c, wantedMajor, wantedMinor);
  xcb_flush(c);
  return xcb_xkb_use_extension_reply (c, use_xkb, error);
}

xcb_generic_error_t *
xcb_xkb_util_select_events(xcb_connection_t      *c, 
			   xcb_xkb_device_spec_t  device_spec, 
			   uint16_t               event_mask, 
			   uint16_t               select) {
  xcb_void_cookie_t void_cookie;
  uint16_t affectMap = 0;
  uint16_t map = 0;

  /* sort out the MapNotify event */
  if (event_mask & XCB_XKB_EVENT_TYPE_MAP_NOTIFY) {
    affectMap = xcb_xkb_util_all_map_parts_mask;
    if (select & XCB_XKB_EVENT_TYPE_MAP_NOTIFY) 
      map = xcb_xkb_util_all_map_parts_mask;
  }

  void_cookie = xcb_xkb_select_events(c, device_spec, event_mask, 
				      event_mask & (~select), /* clear */
				      event_mask & select,    /* selectAll */
				      affectMap, map, NULL);
  
  return xcb_request_check(c, void_cookie);
}

xcb_generic_error_t *
xcb_xkb_util_select_event_details(xcb_connection_t      *c, 
				  xcb_xkb_device_spec_t  device_spec, 
				  uint16_t               event_mask, 
				  uint32_t               affect, 
				  uint32_t               details) {
  xcb_void_cookie_t void_cookie;
  uint16_t affectMap = 0;
  uint16_t map = 0;
  /* for a single event, the switch argument cannot be larger than uint32_t[2] */
  union {
    uint8_t  i8[2];
    uint16_t i16[2];
    uint32_t i32[2];
  } buffer = {0, 0};
  void *_buffer = 0;
  
  /* sort out the MapNotify event */
  if (event_mask & XCB_XKB_EVENT_TYPE_MAP_NOTIFY) {
    affectMap = (uint16_t)affect;
    map = (uint16_t)details | (xcb_xkb_util_all_client_map_parts_mask & affect);
    event_mask = XCB_XKB_EVENT_TYPE_MAP_NOTIFY;
  }
  else {
    /* assemble the switch argument manually */
    switch(event_mask) {
    case XCB_XKB_EVENT_TYPE_NEW_KEYBOARD_NOTIFY:
    case XCB_XKB_EVENT_TYPE_STATE_NOTIFY:
    case XCB_XKB_EVENT_TYPE_NAMES_NOTIFY:
    case XCB_XKB_EVENT_TYPE_ACCESS_X_NOTIFY:
    case XCB_XKB_EVENT_TYPE_EXTENSION_DEVICE_NOTIFY:
      buffer.i16[0] = (uint16_t)affect;
      buffer.i16[1] = (uint16_t)details;
      _buffer = buffer.i16;
      break;
    case XCB_XKB_EVENT_TYPE_CONTROLS_NOTIFY:
    case XCB_XKB_EVENT_TYPE_INDICATOR_STATE_NOTIFY:
    case XCB_XKB_EVENT_TYPE_INDICATOR_MAP_NOTIFY:
      buffer.i32[0] = affect;
      buffer.i32[1] = details;
      _buffer = buffer.i32;
      break;
    case XCB_XKB_EVENT_TYPE_COMPAT_MAP_NOTIFY:
    case XCB_XKB_EVENT_TYPE_BELL_NOTIFY:
    case XCB_XKB_EVENT_TYPE_ACTION_MESSAGE:
      buffer.i8[0] = (uint8_t)affect;
      buffer.i8[1] = (uint8_t)details;
      _buffer = buffer.i8;
      break;
    }
  }

  void_cookie = xcb_xkb_select_events(c, device_spec, event_mask, 
				      0, /* clear */
				      0, /* selectAll */
				      affectMap, map, _buffer);
  
  return xcb_request_check(c, void_cookie);
}

xcb_xkb_get_names_reply_t *
xcb_xkb_util_get_names (xcb_connection_t                *c, 
			xcb_xkb_device_spec_t            device_spec, 
			uint32_t                         which, 
			xcb_xkb_get_names_value_list_t  *_aux,
			xcb_generic_error_t            **e) {
  xcb_xkb_get_names_cookie_t cookie = xcb_xkb_get_names (c, device_spec, which);
  xcb_xkb_get_names_reply_t *reply = xcb_xkb_get_names_reply (c, cookie, e);
  void *buffer;
  if (!(*e)) {
    buffer = xcb_xkb_get_names_value_list(reply);
    xcb_xkb_get_names_value_list_unpack (buffer, 
					 reply->nTypes,
					 reply->indicators,
					 reply->virtualMods,
					 reply->groupNames,
					 reply->nKeys,
					 reply->nKeyAliases,
					 reply->nRadioGroups,
					 reply->which,
					 _aux);
  }
  return reply;
}

xcb_xkb_get_state_reply_t *
xcb_xkb_util_get_state(xcb_connection_t      *c, 
		       xcb_xkb_device_spec_t  device_spec, 
		       xcb_generic_error_t  **e) {
  xcb_xkb_get_state_cookie_t cookie = xcb_xkb_get_state (c, device_spec);
  return xcb_xkb_get_state_reply (c, cookie, e);  
}


xcb_xkb_get_map_reply_t *
xcb_xkb_util_get_map(xcb_connection_t      *c, 
		     xcb_xkb_device_spec_t  device_spec, 
		     uint16_t               map_components, 
		     xcb_xkb_get_map_map_t *_aux,
		     xcb_generic_error_t  **e) {
  xcb_xkb_get_map_cookie_t cookie;
  xcb_xkb_get_map_reply_t *reply;
  void *buffer; 

  cookie =  xcb_xkb_get_map (c, device_spec, map_components,
			     0, /* partial */
			     0, /* firstType */
			     0, /* nTypes */
			     0, /* firstKeySym */
			     0, /* nKeySyms */
			     0, /* firstKeyAction */
			     0, /* nKeyActions */
			     0, /* firstKeyBehavior */
			     0, /* nKeyBehaviors */
			     0, /* virtualMods */
			     0, /* firstKeyExplicit */
			     0, /* nKeyExplicit */
			     0, /* firstModMapKey */
			     0, /* nModMapKeys */
			     0, /* firstVModMapKey */
			     0  /* nVModMapKeys */);

  reply = xcb_xkb_get_map_reply (c, cookie, e);

  if (!(*e)) {
    buffer = xcb_xkb_get_map_map(reply);
    xcb_xkb_get_map_map_unpack (buffer, reply->nTypes, reply->nKeySyms, reply->nKeyActions,
				reply->totalActions, reply->totalKeyBehaviors, reply->nVModMapKeys,
				reply->totalKeyExplicit, reply->totalModMapKeys, reply->totalVModMapKeys,
				reply->present, _aux);
  }

  return reply;
}

xcb_xkb_get_kbd_by_name_reply_t *
xcb_xkb_util_get_kbd_by_name (xcb_connection_t                   *c,
			      xcb_xkb_device_spec_t               device_spec,
			      uint16_t                            need,
			      uint16_t                            want, 
			      xcb_xkb_get_kbd_by_name_replies_t  *_aux,
			      xcb_generic_error_t               **e) {
  xcb_xkb_get_kbd_by_name_cookie_t cookie;
  xcb_xkb_get_kbd_by_name_reply_t *reply;
  void *buffer;

  cookie = xcb_xkb_get_kbd_by_name (c, device_spec, need, want, 
				    0, /* load */
				    0, /* keymapsSpecLen */
				    0, /* keymapsSpec */
				    0, /* keycodesSpecLen */
				    0, /* keycodesSpec */
				    0, /* typesSpecLen */
				    0, /* typesSpec */
				    0, /* compatMapSpecLen */
				    0, /* compatMapSpec */
				    0, /* symbolsSpecLen */
				    0, /* symbolsSpec */
				    0, /* geometrySpecLen */
				    0  /* geometrySpec */);
  reply = xcb_xkb_get_kbd_by_name_reply (c, cookie, e);

  if (!(*e)) {
    buffer = xcb_xkb_get_kbd_by_name_replies (reply);
    xcb_xkb_get_kbd_by_name_replies_unpack (buffer, reply->reported, _aux);
  }

  return reply;
}