kc3-lang/libxkbcommon/src/keymap-priv.c

Branch : - branch - android master - tag -

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• Author : Ran Benita
  Date : 2014-04-22 12:23:36
  Hash : 787faf36
  Message : keymap: don't use darray in xkb_mod_set Instead just statically allocate the mods array (of size MAX_MOD_SIZE = 32). The limit is not going anywhere, and static allocations are nicer (nicer code, no OOM, etc.). It's also small and dense enough. Signed-off-by: Ran Benita <ran234@gmail.com>

• src/keymap-priv.c

• /**
   * Copyright © 2012 Intel Corporation
   * Copyright © 2012 Ran Benita <ran234@gmail.com>
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice (including the next
   * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
   *
   * Author: Daniel Stone <daniel@fooishbar.org>
   */
  
  #include "keymap.h"
  
  static void
  update_builtin_keymap_fields(struct xkb_keymap *keymap)
  {
      /* Predefined (AKA real, core, X11) modifiers. The order is important! */
      static const char *const builtin_mods[] = {
          [0] = "Shift",
          [1] = "Lock",
          [2] = "Control",
          [3] = "Mod1",
          [4] = "Mod2",
          [5] = "Mod3",
          [6] = "Mod4",
          [7] = "Mod5"
      };
  
      for (unsigned i = 0; i < ARRAY_SIZE(builtin_mods); i++) {
          keymap->mods.mods[i].name = xkb_atom_intern(keymap->ctx,
                                                      builtin_mods[i],
                                                      strlen(builtin_mods[i]));
          keymap->mods.mods[i].type = MOD_REAL;
      }
      keymap->mods.num_mods = ARRAY_SIZE(builtin_mods);
  }
  
  struct xkb_keymap *
  xkb_keymap_new(struct xkb_context *ctx,
                 enum xkb_keymap_format format,
                 enum xkb_keymap_compile_flags flags)
  {
      struct xkb_keymap *keymap;
  
      keymap = calloc(1, sizeof(*keymap));
      if (!keymap)
          return NULL;
  
      keymap->refcnt = 1;
      keymap->ctx = xkb_context_ref(ctx);
  
      keymap->format = format;
      keymap->flags = flags;
  
      update_builtin_keymap_fields(keymap);
  
      return keymap;
  }
  
  struct xkb_key *
  XkbKeyByName(struct xkb_keymap *keymap, xkb_atom_t name, bool use_aliases)
  {
      struct xkb_key *key;
  
      xkb_keys_foreach(key, keymap)
          if (key->name == name)
              return key;
  
      if (use_aliases) {
          xkb_atom_t new_name = XkbResolveKeyAlias(keymap, name);
          if (new_name != XKB_ATOM_NONE)
              return XkbKeyByName(keymap, new_name, false);
      }
  
      return NULL;
  }
  
  xkb_atom_t
  XkbResolveKeyAlias(const struct xkb_keymap *keymap, xkb_atom_t name)
  {
      for (unsigned i = 0; i < keymap->num_key_aliases; i++)
          if (keymap->key_aliases[i].alias == name)
              return keymap->key_aliases[i].real;
  
      return XKB_ATOM_NONE;
  }
  
  void
  XkbEscapeMapName(char *name)
  {
      /*
       * All latin-1 alphanumerics, plus parens, slash, minus, underscore and
       * wildcards.
       */
      static const unsigned char legal[] = {
          0x00, 0x00, 0x00, 0x00, 0x00, 0xa7, 0xff, 0x83,
          0xfe, 0xff, 0xff, 0x87, 0xfe, 0xff, 0xff, 0x07,
          0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
          0xff, 0xff, 0x7f, 0xff, 0xff, 0xff, 0x7f, 0xff
      };
  
      if (!name)
          return;
  
      while (*name) {
          if (!(legal[*name / 8] & (1 << (*name % 8))))
              *name = '_';
          name++;
      }
  }
  
  xkb_mod_index_t
  XkbModNameToIndex(const struct xkb_mod_set *mods, xkb_atom_t name,
                    enum mod_type type)
  {
      xkb_mod_index_t i;
      const struct xkb_mod *mod;
  
      xkb_mods_enumerate(i, mod, mods)
          if ((mod->type & type) && name == mod->name)
              return i;
  
      return XKB_MOD_INVALID;
  }