kc3-lang/libxkbcommon/src/xkbcomp/indicators.c

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• Hash : 813ddf25
  Author :
  Date : 2012-03-24T00:29:33
  

  Silence -Wcast-qual warnings There are some cases where we must free a string with a const qualifier. Add a macro UNCONSTIFY to trick the compiler into silencing the warning in the cases where we know what we're doing. Signed-off-by: Ran Benita <ran234@gmail.com>

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• src/xkbcomp/indicators.c

• /************************************************************
   Copyright (c) 1994 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 "xkbcomp.h"
  #include "xkballoc.h"
  #include "xkbmisc.h"
  #include "misc.h"
  #include "expr.h"
  #include "vmod.h"
  #include "indicators.h"
  #include "action.h"
  #include "utils.h"
  
  /***====================================================================***/
  
  #define ReportIndicatorBadType(l, f, w) \
      ReportBadType("indicator map", (f), XkbcAtomText((l)->name), (w))
  #define ReportIndicatorNotArray(l, f) \
      ReportNotArray("indicator map", (f), XkbcAtomText((l)->name))
  
  /***====================================================================***/
  
  void
  ClearIndicatorMapInfo(LEDInfo * info)
  {
      info->name = xkb_intern_atom("default");
      info->indicator = _LED_NotBound;
      info->flags = info->which_mods = info->real_mods = 0;
      info->vmods = 0;
      info->which_groups = info->groups = 0;
      info->ctrls = 0;
  }
  
  LEDInfo *
  AddIndicatorMap(LEDInfo * oldLEDs, LEDInfo * new)
  {
      LEDInfo *old, *last;
      unsigned collide;
  
      last = NULL;
      for (old = oldLEDs; old != NULL; old = (LEDInfo *) old->defs.next)
      {
          if (old->name == new->name)
          {
              if ((old->real_mods == new->real_mods) &&
                  (old->vmods == new->vmods) &&
                  (old->groups == new->groups) &&
                  (old->ctrls == new->ctrls) &&
                  (old->which_mods == new->which_mods) &&
                  (old->which_groups == new->which_groups))
              {
                  old->defs.defined |= new->defs.defined;
                  return oldLEDs;
              }
              if (new->defs.merge == MergeReplace)
              {
                  CommonInfo *next = old->defs.next;
                  if (((old->defs.fileID == new->defs.fileID)
                       && (warningLevel > 0)) || (warningLevel > 9))
                  {
                      WARN("Map for indicator %s redefined\n",
                            XkbcAtomText(old->name));
                      ACTION("Earlier definition ignored\n");
                  }
                  *old = *new;
                  old->defs.next = next;
                  return oldLEDs;
              }
              collide = 0;
              if (UseNewField(_LED_Index, &old->defs, &new->defs, &collide))
              {
                  old->indicator = new->indicator;
                  old->defs.defined |= _LED_Index;
              }
              if (UseNewField(_LED_Mods, &old->defs, &new->defs, &collide))
              {
                  old->which_mods = new->which_mods;
                  old->real_mods = new->real_mods;
                  old->vmods = new->vmods;
                  old->defs.defined |= _LED_Mods;
              }
              if (UseNewField(_LED_Groups, &old->defs, &new->defs, &collide))
              {
                  old->which_groups = new->which_groups;
                  old->groups = new->groups;
                  old->defs.defined |= _LED_Groups;
              }
              if (UseNewField(_LED_Ctrls, &old->defs, &new->defs, &collide))
              {
                  old->ctrls = new->ctrls;
                  old->defs.defined |= _LED_Ctrls;
              }
              if (UseNewField(_LED_Explicit, &old->defs, &new->defs, &collide))
              {
                  old->flags &= ~XkbIM_NoExplicit;
                  old->flags |= (new->flags & XkbIM_NoExplicit);
                  old->defs.defined |= _LED_Explicit;
              }
              if (UseNewField(_LED_Automatic, &old->defs, &new->defs, &collide))
              {
                  old->flags &= ~XkbIM_NoAutomatic;
                  old->flags |= (new->flags & XkbIM_NoAutomatic);
                  old->defs.defined |= _LED_Automatic;
              }
              if (UseNewField(_LED_DrivesKbd, &old->defs, &new->defs, &collide))
              {
                  old->flags &= ~XkbIM_LEDDrivesKB;
                  old->flags |= (new->flags & XkbIM_LEDDrivesKB);
                  old->defs.defined |= _LED_DrivesKbd;
              }
              if (collide)
              {
                  WARN("Map for indicator %s redefined\n",
                        XkbcAtomText(old->name));
                  ACTION("Using %s definition for duplicate fields\n",
                          (new->defs.merge == MergeAugment ? "first" : "last"));
              }
              return oldLEDs;
          }
          if (old->defs.next == NULL)
              last = old;
      }
      /* new definition */
      old = uTypedAlloc(LEDInfo);
      if (!old)
      {
          WSGO("Couldn't allocate indicator map\n");
          ACTION("Map for indicator %s not compiled\n",
                  XkbcAtomText(new->name));
          return NULL;
      }
      *old = *new;
      old->defs.next = NULL;
      if (last)
      {
          last->defs.next = &old->defs;
          return oldLEDs;
      }
      return old;
  }
  
  static const LookupEntry modComponentNames[] = {
      {"base", XkbIM_UseBase},
      {"latched", XkbIM_UseLatched},
      {"locked", XkbIM_UseLocked},
      {"effective", XkbIM_UseEffective},
      {"compat", XkbIM_UseCompat},
      {"any", XkbIM_UseAnyMods},
      {"none", 0},
      {NULL, 0}
  };
  static const LookupEntry groupComponentNames[] = {
      {"base", XkbIM_UseBase},
      {"latched", XkbIM_UseLatched},
      {"locked", XkbIM_UseLocked},
      {"effective", XkbIM_UseEffective},
      {"any", XkbIM_UseAnyGroup},
      {"none", 0},
      {NULL, 0}
  };
  
  static const LookupEntry groupNames[] = {
      {"group1", 0x01},
      {"group2", 0x02},
      {"group3", 0x04},
      {"group4", 0x08},
      {"group5", 0x10},
      {"group6", 0x20},
      {"group7", 0x40},
      {"group8", 0x80},
      {"none", 0x00},
      {"all", 0xff},
      {NULL, 0}
  };
  
  int
  SetIndicatorMapField(LEDInfo * led,
                       struct xkb_desc * xkb,
                       char *field, ExprDef * arrayNdx, ExprDef * value)
  {
      ExprResult rtrn;
      Bool ok;
  
      ok = True;
      if ((strcasecmp(field, "modifiers") == 0) ||
          (strcasecmp(field, "mods") == 0))
      {
          if (arrayNdx != NULL)
              return ReportIndicatorNotArray(led, field);
          if (!ExprResolveVModMask(value, &rtrn, xkb))
              return ReportIndicatorBadType(led, field, "modifier mask");
          led->real_mods = rtrn.uval & 0xff;
          led->vmods = (rtrn.uval >> 8) & 0xff;
          led->defs.defined |= _LED_Mods;
      }
      else if (strcasecmp(field, "groups") == 0)
      {
          if (arrayNdx != NULL)
              return ReportIndicatorNotArray(led, field);
          if (!ExprResolveMask(value, &rtrn, groupNames))
              return ReportIndicatorBadType(led, field, "group mask");
          led->groups = rtrn.uval;
          led->defs.defined |= _LED_Groups;
      }
      else if ((strcasecmp(field, "controls") == 0) ||
               (strcasecmp(field, "ctrls") == 0))
      {
          if (arrayNdx != NULL)
              return ReportIndicatorNotArray(led, field);
          if (!ExprResolveMask(value, &rtrn, ctrlNames))
              return ReportIndicatorBadType(led, field,
                                            "controls mask");
          led->ctrls = rtrn.uval;
          led->defs.defined |= _LED_Ctrls;
      }
      else if (strcasecmp(field, "allowexplicit") == 0)
      {
          if (arrayNdx != NULL)
              return ReportIndicatorNotArray(led, field);
          if (!ExprResolveBoolean(value, &rtrn))
              return ReportIndicatorBadType(led, field, "boolean");
          if (rtrn.uval)
              led->flags &= ~XkbIM_NoExplicit;
          else
              led->flags |= XkbIM_NoExplicit;
          led->defs.defined |= _LED_Explicit;
      }
      else if ((strcasecmp(field, "whichmodstate") == 0) ||
               (strcasecmp(field, "whichmodifierstate") == 0))
      {
          if (arrayNdx != NULL)
              return ReportIndicatorNotArray(led, field);
          if (!ExprResolveMask(value, &rtrn, modComponentNames))
          {
              return ReportIndicatorBadType(led, field,
                                            "mask of modifier state components");
          }
          led->which_mods = rtrn.uval;
      }
      else if (strcasecmp(field, "whichgroupstate") == 0)
      {
          if (arrayNdx != NULL)
              return ReportIndicatorNotArray(led, field);
          if (!ExprResolveMask(value, &rtrn, groupComponentNames))
          {
              return ReportIndicatorBadType(led, field,
                                            "mask of group state components");
          }
          led->which_groups = rtrn.uval;
      }
      else if ((strcasecmp(field, "driveskbd") == 0) ||
               (strcasecmp(field, "driveskeyboard") == 0) ||
               (strcasecmp(field, "leddriveskbd") == 0) ||
               (strcasecmp(field, "leddriveskeyboard") == 0) ||
               (strcasecmp(field, "indicatordriveskbd") == 0) ||
               (strcasecmp(field, "indicatordriveskeyboard") == 0))
      {
          if (arrayNdx != NULL)
              return ReportIndicatorNotArray(led, field);
          if (!ExprResolveBoolean(value, &rtrn))
              return ReportIndicatorBadType(led, field, "boolean");
          if (rtrn.uval)
              led->flags |= XkbIM_LEDDrivesKB;
          else
              led->flags &= ~XkbIM_LEDDrivesKB;
          led->defs.defined |= _LED_DrivesKbd;
      }
      else if (strcasecmp(field, "index") == 0)
      {
          if (arrayNdx != NULL)
              return ReportIndicatorNotArray(led, field);
          if (!ExprResolveInteger(value, &rtrn))
              return ReportIndicatorBadType(led, field,
                                            "indicator index");
          if ((rtrn.uval < 1) || (rtrn.uval > 32))
          {
              ERROR("Illegal indicator index %d (range 1..%d)\n",
                     rtrn.uval, XkbNumIndicators);
              ACTION("Index definition for %s indicator ignored\n",
                      XkbcAtomText(led->name));
              return False;
          }
          led->indicator = rtrn.uval;
          led->defs.defined |= _LED_Index;
      }
      else
      {
          ERROR("Unknown field %s in map for %s indicator\n", field,
                 XkbcAtomText(led->name));
          ACTION("Definition ignored\n");
          ok = False;
      }
      return ok;
  }
  
  LEDInfo *
  HandleIndicatorMapDef(IndicatorMapDef * def,
                        struct xkb_desc * xkb,
                        LEDInfo * dflt, LEDInfo * oldLEDs, unsigned merge)
  {
      LEDInfo led, *rtrn;
      VarDef *var;
      Bool ok;
  
      if (def->merge != MergeDefault)
          merge = def->merge;
  
      led = *dflt;
      led.defs.merge = merge;
      led.name = def->name;
  
      ok = True;
      for (var = def->body; var != NULL; var = (VarDef *) var->common.next)
      {
          ExprResult elem, field;
          ExprDef *arrayNdx;
          if (!ExprResolveLhs(var->name, &elem, &field, &arrayNdx))
          {
              ok = False;
              continue;
          }
          if (elem.str != NULL)
          {
              ERROR
                  ("Cannot set defaults for \"%s\" element in indicator map\n",
                   elem.str);
              ACTION("Assignment to %s.%s ignored\n", elem.str, field.str);
              ok = False;
          }
          else
          {
              ok = SetIndicatorMapField(&led, xkb, field.str, arrayNdx,
                                        var->value) && ok;
          }
          free(elem.str);
          free(field.str);
      }
      if (ok)
      {
          rtrn = AddIndicatorMap(oldLEDs, &led);
          return rtrn;
      }
      return NULL;
  }
  
  Bool
  CopyIndicatorMapDefs(struct xkb_desc * xkb, LEDInfo *leds, LEDInfo **unboundRtrn)
  {
      LEDInfo *led, *next;
      LEDInfo *unbound, *last;
  
      if (XkbcAllocNames(xkb, XkbIndicatorNamesMask, 0) != Success)
      {
          WSGO("Couldn't allocate names\n");
          ACTION("Indicator names may be incorrect\n");
      }
      if (XkbcAllocIndicatorMaps(xkb) != Success)
      {
          WSGO("Can't allocate indicator maps\n");
          ACTION("Indicator map definitions may be lost\n");
          return False;
      }
      last = unbound = (unboundRtrn ? *unboundRtrn : NULL);
      while ((last != NULL) && (last->defs.next != NULL))
      {
          last = (LEDInfo *) last->defs.next;
      }
      for (led = leds; led != NULL; led = next)
      {
          next = (LEDInfo *) led->defs.next;
          if ((led->groups != 0) && (led->which_groups == 0))
              led->which_groups = XkbIM_UseEffective;
          if ((led->which_mods == 0) && ((led->real_mods) || (led->vmods)))
              led->which_mods = XkbIM_UseEffective;
          if ((led->indicator == _LED_NotBound) || (!xkb->indicators))
          {
              if (unboundRtrn != NULL)
              {
                  led->defs.next = NULL;
                  if (last != NULL)
                      last->defs.next = (CommonInfo *) led;
                  else
                      unbound = led;
                  last = led;
              }
              else
                  free(led);
          }
          else
          {
              struct xkb_indicator_map * im;
              im = &xkb->indicators->maps[led->indicator - 1];
              im->flags = led->flags;
              im->which_groups = led->which_groups;
              im->groups = led->groups;
              im->which_mods = led->which_mods;
              im->mods.mask = led->real_mods;
              im->mods.real_mods = led->real_mods;
              im->mods.vmods = led->vmods;
              im->ctrls = led->ctrls;
              if (xkb->names != NULL)
              {
                  free(UNCONSTIFY(xkb->names->indicators[led->indicator - 1]));
                  xkb->names->indicators[led->indicator-1] = XkbcAtomGetString(led->name);
              }
              free(led);
          }
      }
      if (unboundRtrn != NULL)
      {
          *unboundRtrn = unbound;
      }
      return True;
  }
  
  Bool
  BindIndicators(struct xkb_desc * xkb, Bool force, LEDInfo *unbound,
                 LEDInfo **unboundRtrn)
  {
      int i;
      LEDInfo *led, *next, *last;
  
      if (xkb->names != NULL)
      {
          for (led = unbound; led != NULL; led = (LEDInfo *) led->defs.next)
          {
              if (led->indicator == _LED_NotBound)
              {
                  for (i = 0; i < XkbNumIndicators; i++)
                  {
                      if (xkb->names->indicators[i] &&
                          strcmp(xkb->names->indicators[i],
                                 XkbcAtomText(led->name)) == 0)
                      {
                          led->indicator = i + 1;
                          break;
                      }
                  }
              }
          }
          if (force)
          {
              for (led = unbound; led != NULL; led = (LEDInfo *) led->defs.next)
              {
                  if (led->indicator == _LED_NotBound)
                  {
                      for (i = 0; i < XkbNumIndicators; i++)
                      {
                          if (xkb->names->indicators[i] == NULL)
                          {
                              xkb->names->indicators[i] = XkbcAtomGetString(led->name);
                              led->indicator = i + 1;
                              xkb->indicators->phys_indicators &= ~(1 << i);
                              break;
                          }
                      }
                      if (led->indicator == _LED_NotBound)
                      {
                          ERROR("No unnamed indicators found\n");
                          ACTION
                              ("Virtual indicator map \"%s\" not bound\n",
                               XkbcAtomText(led->name));
                          continue;
                      }
                  }
              }
          }
      }
      for (last = NULL, led = unbound; led != NULL; led = next)
      {
          next = (LEDInfo *) led->defs.next;
          if (led->indicator == _LED_NotBound)
          {
              if (force)
              {
                  unbound = next;
                  free(led);
              }
              else
              {
                  if (last)
                      last->defs.next = &led->defs;
                  else
                      unbound = led;
                  last = led;
              }
          }
          else
          {
              if ((xkb->names != NULL) &&
                  (strcmp(xkb->names->indicators[led->indicator - 1],
                          XkbcAtomText(led->name)) != 0))
              {
                  const char *old = xkb->names->indicators[led->indicator - 1];
                  ERROR("Multiple names bound to indicator %d\n",
                         (unsigned int) led->indicator);
                  ACTION("Using %s, ignoring %s\n", old, XkbcAtomText(led->name));
                  led->indicator = _LED_NotBound;
                  if (force)
                  {
                      free(led);
                      unbound = next;
                  }
                  else
                  {
                      if (last)
                          last->defs.next = &led->defs;
                      else
                          unbound = led;
                      last = led;
                  }
              }
              else
              {
                  struct xkb_indicator_map * map;
                  map = &xkb->indicators->maps[led->indicator - 1];
                  map->flags = led->flags;
                  map->which_groups = led->which_groups;
                  map->groups = led->groups;
                  map->which_mods = led->which_mods;
                  map->mods.mask = led->real_mods;
                  map->mods.real_mods = led->real_mods;
                  map->mods.vmods = led->vmods;
                  map->ctrls = led->ctrls;
                  if (last)
                      last->defs.next = &next->defs;
                  else
                      unbound = next;
                  led->defs.next = NULL;
                  free(led);
              }
          }
      }
      if (unboundRtrn)
      {
          *unboundRtrn = unbound;
      }
      else
      {
          for (led = unbound; led != NULL; led = next)
          {
              next = led ? (LEDInfo *) led->defs.next : NULL;
              free(led);
          }
      }
      return True;
  }
  

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