kc3-lang/libxkbcommon/src/malloc.c

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• Hash : 4e228511
  Author :
  Date : 2012-02-15T14:34:08
  

  Introduce xkb_keycode_t for keycodes And use it consistently everywhere, including with a special long-safe internal keycode type, to ease the transition to large keycodes. Signed-off-by: Daniel Stone <daniel@fooishbar.org>

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• src/malloc.c

• /************************************************************
  Copyright (c) 1993 by Silicon Graphics Computer Systems, Inc.
  
  Permission to use, copy, modify, and distribute this
  software and its documentation for any purpose and without
  fee is hereby granted, provided that the above copyright
  notice appear in all copies and that both that copyright
  notice and this permission notice appear in supporting
  documentation, and that the name of Silicon Graphics not be
  used in advertising or publicity pertaining to distribution
  of the software without specific prior written permission.
  Silicon Graphics makes no representation about the suitability
  of this software for any purpose. It is provided "as is"
  without any express or implied warranty.
  
  SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
  GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
  DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
  THE USE OR PERFORMANCE OF THIS SOFTWARE.
  
  ********************************************************/
  
  #include "xkballoc.h"
  #include "xkbcommon/xkbcommon.h"
  #include "XKBcommonint.h"
  
  int
  XkbcAllocClientMap(struct xkb_desc * xkb, unsigned which, unsigned nTotalTypes)
  {
      int i;
      struct xkb_client_map * map;
  
      if (!xkb || ((nTotalTypes > 0) && (nTotalTypes < XkbNumRequiredTypes)))
          return BadValue;
  
      if ((which & XkbKeySymsMask) && !xkb_keymap_keycode_range_is_legal(xkb)) {
  #ifdef DEBUG
          fprintf(stderr, "bad keycode (%d,%d) in XkbAllocClientMap\n",
                  xkb->min_key_code, xkb->max_key_code);
  #endif
          return BadValue;
      }
  
      if (!xkb->map) {
          map = _XkbTypedCalloc(1, struct xkb_client_map);
          if (!map)
              return BadAlloc;
          xkb->map = map;
      }
      else
          map = xkb->map;
  
      if ((which & XkbKeyTypesMask) && (nTotalTypes > 0)) {
          if (!map->types) {
              map->types = _XkbTypedCalloc(nTotalTypes, struct xkb_key_type);
              if (!map->types)
                  return BadAlloc;
  
              map->num_types = 0;
              map->size_types = nTotalTypes;
          }
          else if (map->size_types < nTotalTypes) {
              struct xkb_key_type *prev_types = map->types;
  
              map->types = _XkbTypedRealloc(map->types, nTotalTypes,
                                            struct xkb_key_type);
              if (!map->types) {
                  free(prev_types);
                  map->num_types = map->size_types = 0;
                  return BadAlloc;
              }
  
              map->size_types = nTotalTypes;
              bzero(&map->types[map->num_types],
                    (map->size_types - map->num_types) * sizeof(struct xkb_key_type));
          }
      }
  
      if (which & XkbKeySymsMask) {
          int nKeys = XkbNumKeys(xkb);
  
          if (!map->syms) {
              map->size_syms = (nKeys * 15) / 10;
              map->syms = _XkbTypedCalloc(map->size_syms, uint32_t);
              if (!map->syms) {
                  map->size_syms = 0;
                  return BadAlloc;
              }
              map->num_syms = 1;
              map->syms[0] = NoSymbol;
          }
  
          if (!map->key_sym_map) {
              i = xkb->max_key_code + 1;
              map->key_sym_map = _XkbTypedCalloc(i, struct xkb_sym_map);
              if (!map->key_sym_map)
                  return BadAlloc;
          }
      }
  
      if (which & XkbModifierMapMask) {
          if (!xkb_keymap_keycode_range_is_legal(xkb))
              return BadMatch;
  
          if (!map->modmap) {
              i = xkb->max_key_code + 1;
              map->modmap = _XkbTypedCalloc(i, unsigned char);
              if (!map->modmap)
                  return BadAlloc;
          }
      }
  
      return Success;
  }
  
  int
  XkbcAllocServerMap(struct xkb_desc * xkb, unsigned which, unsigned nNewActions)
  {
      int i;
      struct xkb_server_map * map;
  
      if (!xkb)
          return BadMatch;
  
      if (!xkb->server) {
          map = _XkbTypedCalloc(1, struct xkb_server_map);
          if (!map)
              return BadAlloc;
  
          for (i = 0; i < XkbNumVirtualMods; i++)
              map->vmods[i] = XkbNoModifierMask;
  
          xkb->server = map;
      }
      else
          map = xkb->server;
  
      if (!which)
          return Success;
  
      if (!xkb_keymap_keycode_range_is_legal(xkb))
          return BadMatch;
  
      if (which & XkbExplicitComponentsMask) {
          if (!map->explicit) {
              i = xkb->max_key_code + 1;
              map->explicit = _XkbTypedCalloc(i, unsigned char);
              if (!map->explicit)
                  return BadAlloc;
          }
      }
  
      if (which&XkbKeyActionsMask) {
          if (nNewActions < 1)
              nNewActions = 1;
  
          if (!map->acts) {
              map->acts = _XkbTypedCalloc(nNewActions + 1, union xkb_action);
              if (!map->acts)
                  return BadAlloc;
              map->num_acts = 1;
              map->size_acts = nNewActions + 1;
          }
          else if ((map->size_acts - map->num_acts) < nNewActions) {
              unsigned need;
              union xkb_action *prev_acts = map->acts;
  
              need = map->num_acts + nNewActions;
              map->acts = _XkbTypedRealloc(map->acts, need, union xkb_action);
              if (!map->acts) {
                  free(prev_acts);
                  map->num_acts = map->size_acts = 0;
                  return BadAlloc;
              }
  
              map->size_acts = need;
              bzero(&map->acts[map->num_acts],
                    (map->size_acts - map->num_acts) * sizeof(union xkb_action));
          }
  
          if (!map->key_acts) {
              i = xkb->max_key_code + 1;
              map->key_acts = _XkbTypedCalloc(i, unsigned short);
              if (!map->key_acts)
                  return BadAlloc;
          }
      }
  
      if (which & XkbKeyBehaviorsMask) {
          if (!map->behaviors) {
              i = xkb->max_key_code + 1;
              map->behaviors = _XkbTypedCalloc(i, struct xkb_behavior);
              if (!map->behaviors)
                  return BadAlloc;
          }
      }
  
      if (which & XkbVirtualModMapMask) {
          if (!map->vmodmap) {
              i = xkb->max_key_code + 1;
              map->vmodmap = _XkbTypedCalloc(i, uint32_t);
              if (!map->vmodmap)
                  return BadAlloc;
          }
      }
  
      return Success;
  }
  
  int
  XkbcCopyKeyType(struct xkb_key_type * from, struct xkb_key_type * into)
  {
      if (!from || !into)
          return BadMatch;
  
      if (into->map) {
          free(into->map);
          into->map = NULL;
      }
      if (into->preserve) {
         free(into->preserve);
         into->preserve= NULL;
      }
      if (into->level_names) {
          free(into->level_names);
          into->level_names = NULL;
      }
  
      *into = *from;
  
      if (from->map && (into->map_count > 0)) {
          into->map = _XkbTypedCalloc(into->map_count, struct xkb_kt_map_entry);
          if (!into->map)
              return BadAlloc;
          memcpy(into->map, from->map,
                 into->map_count * sizeof(struct xkb_kt_map_entry));
      }
  
      if (from->preserve && (into->map_count > 0)) {
          into->preserve = _XkbTypedCalloc(into->map_count, struct xkb_mods);
          if (!into->preserve)
              return BadAlloc;
          memcpy(into->preserve, from->preserve,
                 into->map_count * sizeof(struct xkb_mods));
      }
  
      if (from->level_names && (into->num_levels > 0)) {
          into->level_names = _XkbTypedCalloc(into->num_levels, uint32_t);
          if (!into->level_names)
              return BadAlloc;
          memcpy(into->level_names, from->level_names,
                 into->num_levels * sizeof(uint32_t));
      }
  
      return Success;
  }
  
  uint32_t *
  XkbcResizeKeySyms(struct xkb_desc * xkb, xkb_keycode_t key,
                    unsigned int needed)
  {
      uint32_t i, nSyms, nKeySyms;
      uint32_t nOldSyms;
      uint32_t *newSyms;
  
      if (needed == 0) {
          xkb->map->key_sym_map[key].offset = 0;
          return xkb->map->syms;
      }
  
      nOldSyms = XkbKeyNumSyms(xkb, key);
      if (nOldSyms >= needed)
          return XkbKeySymsPtr(xkb, key);
  
      if (xkb->map->size_syms - xkb->map->num_syms >= needed) {
          if (nOldSyms > 0)
              memcpy(&xkb->map->syms[xkb->map->num_syms],
                     XkbKeySymsPtr(xkb, key), nOldSyms * sizeof(uint32_t));
  
          if ((needed - nOldSyms) > 0)
              bzero(&xkb->map->syms[xkb->map->num_syms + XkbKeyNumSyms(xkb, key)],
                    (needed - nOldSyms) * sizeof(uint32_t));
  
          xkb->map->key_sym_map[key].offset = xkb->map->num_syms;
          xkb->map->num_syms += needed;
  
          return &xkb->map->syms[xkb->map->key_sym_map[key].offset];
      }
  
      xkb->map->size_syms += (needed > 32 ? needed : 32);
      newSyms = _XkbTypedCalloc(xkb->map->size_syms, uint32_t);
      if (!newSyms)
          return NULL;
  
      newSyms[0] = NoSymbol;
      nSyms = 1;
      for (i = xkb->min_key_code; i <= xkb->max_key_code; i++) {
          int nCopy;
  
          nCopy = nKeySyms = XkbKeyNumSyms(xkb, i);
          if ((nKeySyms == 0) && (i != key))
              continue;
  
          if (i == key)
              nKeySyms = needed;
          if (nCopy != 0)
             memcpy(&newSyms[nSyms], XkbKeySymsPtr(xkb, i),
                    nCopy * sizeof(uint32_t));
          if (nKeySyms > nCopy)
              bzero(&newSyms[nSyms+nCopy], (nKeySyms - nCopy) * sizeof(uint32_t));
  
          xkb->map->key_sym_map[i].offset = nSyms;
          nSyms += nKeySyms;
      }
  
      free(xkb->map->syms);
      xkb->map->syms = newSyms;
      xkb->map->num_syms = nSyms;
  
      return &xkb->map->syms[xkb->map->key_sym_map[key].offset];
  }
  
  union xkb_action *
  XkbcResizeKeyActions(struct xkb_desc * xkb, xkb_keycode_t key, int needed)
  {
      xkb_keycode_t i, nActs;
      union xkb_action *newActs;
  
      if (needed == 0) {
          xkb->server->key_acts[key] = 0;
          return NULL;
      }
  
      if (XkbKeyHasActions(xkb, key) &&
          (XkbKeyNumSyms(xkb, key) >= (unsigned)needed))
          return XkbKeyActionsPtr(xkb, key);
  
      if (xkb->server->size_acts - xkb->server->num_acts >= (unsigned)needed) {
          xkb->server->key_acts[key] = xkb->server->num_acts;
          xkb->server->num_acts += needed;
  
          return &xkb->server->acts[xkb->server->key_acts[key]];
      }
  
      xkb->server->size_acts = xkb->server->num_acts + needed + 8;
      newActs = _XkbTypedCalloc(xkb->server->size_acts, union xkb_action);
      if (!newActs)
          return NULL;
      newActs[0].type = XkbSA_NoAction;
      nActs = 1;
  
      for (i = xkb->min_key_code; i <= xkb->max_key_code; i++) {
          xkb_keycode_t nKeyActs, nCopy;
  
          if ((xkb->server->key_acts[i] == 0) && (i != key))
              continue;
  
          nCopy = nKeyActs = XkbKeyNumActions(xkb, i);
          if (i == key) {
              nKeyActs= needed;
              if (needed < nCopy)
                  nCopy = needed;
          }
  
          if (nCopy > 0)
              memcpy(&newActs[nActs], XkbKeyActionsPtr(xkb, i),
                     nCopy * sizeof(union xkb_action));
          if (nCopy < nKeyActs)
              bzero(&newActs[nActs + nCopy],
                    (nKeyActs - nCopy) * sizeof(union xkb_action));
  
          xkb->server->key_acts[i] = nActs;
          nActs += nKeyActs;
      }
  
      free(xkb->server->acts);
      xkb->server->acts = newActs;
      xkb->server->num_acts = nActs;
  
      return &xkb->server->acts[xkb->server->key_acts[key]];
  }
  
  void
  XkbcFreeClientMap(struct xkb_desc * xkb, unsigned what, Bool freeMap)
  {
      struct xkb_client_map * map;
  
      if (!xkb || !xkb->map)
          return;
  
      if (freeMap)
          what = XkbAllClientInfoMask;
      map = xkb->map;
  
      if (what & XkbKeyTypesMask) {
          if (map->types) {
              if (map->num_types > 0) {
                  int i;
                  struct xkb_key_type * type;
  
                  for (i = 0, type = map->types; i < map->num_types; i++, type++) {
                      if (type->map) {
                          free(type->map);
                          type->map = NULL;
                      }
                      if (type->preserve) {
                          free(type->preserve);
                          type->preserve = NULL;
                      }
                      type->map_count = 0;
                      if (type->level_names) {
                          free(type->level_names);
                          type->level_names = NULL;
                      }
                  }
              }
              free(map->types);
              map->num_types = map->size_types = 0;
              map->types = NULL;
          }
      }
  
      if (what & XkbKeySymsMask) {
          if (map->key_sym_map) {
              free(map->key_sym_map);
              map->key_sym_map = NULL;
          }
          if (map->syms) {
              free(map->syms);
              map->size_syms = map->num_syms = 0;
              map->syms = NULL;
          }
      }
  
      if ((what & XkbModifierMapMask) && map->modmap) {
          free(map->modmap);
          map->modmap = NULL;
      }
  
      if (freeMap) {
          free(xkb->map);
          xkb->map = NULL;
      }
  }
  
  void
  XkbcFreeServerMap(struct xkb_desc * xkb, unsigned what, Bool freeMap)
  {
      struct xkb_server_map * map;
  
      if (!xkb || !xkb->server)
          return;
  
      if (freeMap)
          what = XkbAllServerInfoMask;
      map = xkb->server;
  
      if ((what & XkbExplicitComponentsMask) && map->explicit) {
          free(map->explicit);
          map->explicit = NULL;
      }
  
      if (what & XkbKeyActionsMask) {
          if (map->key_acts) {
              free(map->key_acts);
              map->key_acts = NULL;
          }
          if (map->acts) {
              free(map->acts);
              map->num_acts = map->size_acts = 0;
              map->acts = NULL;
          }
      }
  
      if ((what & XkbKeyBehaviorsMask) && map->behaviors) {
          free(map->behaviors);
          map->behaviors = NULL;
      }
  
      if ((what & XkbVirtualModMapMask) && map->vmodmap) {
          free(map->vmodmap);
          map->vmodmap = NULL;
      }
  
      if (freeMap) {
          free(xkb->server);
          xkb->server = NULL;
      }
  }
  

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