text: /* $Xorg: VarGet.c,v 1.4 2001/02/09 02:03:59 xorgcvs Exp $ */
  /*
  
  Copyright 1993 by Sun Microsystems, Inc. Mountain View, CA.
  
  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 Sun not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.
  Sun makes no representations about the suitability of
  this software for any purpose.  It is provided "as is"
  without express or implied warranty.
  
  SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO  THIS  SOFTWARE,
  INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT-
  NESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SUN BE  LI-
  ABLE  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.
  
  */
  
  /*
  
  Copyright 1985, 1986, 1987, 1988, 1989, 1998  The Open Group
  
  Permission to use, copy, modify, distribute, and sell this software and its
  documentation for any purpose is hereby granted without fee, provided that
  the above copyright notice appear in all copies and that both that
  copyright notice and this permission notice appear in supporting
  documentation.
  
  The above copyright notice and this permission notice 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
  OPEN GROUP 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.
  
  Except as contained in this notice, the name of The Open Group shall not be
  used in advertising or otherwise to promote the sale, use or other dealings
  in this Software without prior written authorization from The Open Group.
  
  */
  /* $XFree86: xc/lib/Xt/VarGet.c,v 1.7 2001/07/29 05:01:12 tsi Exp $ */
  
  #ifdef HAVE_CONFIG_H
  #include <config.h>
  #endif
  #include "IntrinsicI.h"
  #include "VarargsI.h"
  #include "StringDefs.h"
  
  static String XtNxtGetTypedArg = "xtGetTypedArg";
  
  void
  XtVaGetSubresources(
      Widget widget,
      XtPointer base,
      _Xconst char* name,
      _Xconst char* class,
      XtResourceList resources,
      Cardinal num_resources,
      ...)
  {
      va_list                 var;
      XtTypedArgList          args;
      Cardinal                num_args;
      int			    total_count, typed_count;
      WIDGET_TO_APPCON(widget);
  
      LOCK_APP(app);
      va_start(var, num_resources);
      _XtCountVaList(var, &total_count, &typed_count);
      va_end(var);
  
      va_start(var, num_resources);
  
      _XtVaToTypedArgList(var, total_count, &args, &num_args);
  
      _XtGetSubresources(widget, base, name, class, resources, num_resources,
  	NULL, 0, args, num_args);
  
      if (num_args != 0) {
  	XtFree((XtPointer)args);
      }
  
      va_end(var);
      UNLOCK_APP(app);
  }
  
  
  void
  XtVaGetApplicationResources(Widget widget, XtPointer base, XtResourceList resources, Cardinal num_resources, ...)
  {
      va_list                 var;
      XtTypedArgList          args;
      Cardinal                num_args;
      int			    total_count, typed_count;
      WIDGET_TO_APPCON(widget);
  
      LOCK_APP(app);
      va_start(var,num_resources);
      _XtCountVaList(var, &total_count, &typed_count);
      va_end(var);
  
      va_start(var,num_resources);
  
      _XtVaToTypedArgList(var, total_count, &args, &num_args);
  
      _XtGetApplicationResources(widget, base, resources, num_resources,
  	NULL, 0, args, num_args);
  
      if (num_args != 0) {
  	XtFree((XtPointer)args);
      }
  
      va_end(var);
      UNLOCK_APP(app);
  }
  
  
  static void
  GetTypedArg(
      Widget              widget,
      XtTypedArgList	typed_arg,
      XtResourceList      resources,
      Cardinal            num_resources)
  {
      String              from_type = NULL;
      Cardinal		from_size = 0;
      XrmValue            from_val, to_val;
      register Cardinal   i;
      Arg			arg;
      XtPointer		value;
  
      /* note we presume that the XtResourceList to be un-compiled */
  
      for (i = 0; i < num_resources; i++) {
          if (StringToName(typed_arg->name) == StringToName(resources[i].resource_name)) {
              from_type = resources[i].resource_type;
  	    from_size = resources[i].resource_size;
              break;
          }
      }
  
      if (i == num_resources) {
  	XtAppWarningMsg(XtWidgetToApplicationContext(widget),
              "unknownType", XtNxtGetTypedArg, XtCXtToolkitError,
              "Unable to find type of resource for conversion",
              (String *)NULL, (Cardinal *)NULL);
   	return;
      }
  
      value = ALLOCATE_LOCAL(from_size);
      if (value == NULL) _XtAllocError(NULL);
      XtSetArg(arg, typed_arg->name, value);
      XtGetValues(widget, &arg, 1);
  
      from_val.size = from_size;
      from_val.addr = (XPointer)value;
      to_val.addr = (XPointer)typed_arg->value;
      to_val.size = typed_arg->size;
  
      if (!XtConvertAndStore(widget, from_type, &from_val,
  			   typed_arg->type, &to_val)) {
  	if (to_val.size > (unsigned) typed_arg->size) {
  	    String params[2];
  	    Cardinal num_params = 2;
  	    params[0] = typed_arg->type;
  	    params[1] = XtName(widget);
  	    XtAppWarningMsg(XtWidgetToApplicationContext(widget),
  		"insufficientSpace", XtNxtGetTypedArg, XtCXtToolkitError,
  		"Insufficient space for converted type '%s' in widget '%s'",
  		params, &num_params);
  	}
  	else {
  	    String params[3];
  	    Cardinal num_params = 3;
  	    params[0] = from_type;
  	    params[1] = typed_arg->type;
  	    params[2] = XtName(widget);
  	    XtAppWarningMsg(XtWidgetToApplicationContext(widget),
  		"conversionFailed", XtNxtGetTypedArg, XtCXtToolkitError,
  		"Type conversion (%s to %s) failed for widget '%s'",
  		params, &num_params);
  	}
      }
      DEALLOCATE_LOCAL(value);
  }
  
  static int
  GetNestedArg(
      Widget              widget,
      XtTypedArgList	avlist,
      ArgList             args,
      XtResourceList      resources,
      Cardinal            num_resources)
  {
      int         count = 0;
  
      for (; avlist->name != NULL; avlist++) {
          if (avlist->type != NULL) {
  	    GetTypedArg(widget, avlist, resources, num_resources);
          } else if(strcmp(avlist->name, XtVaNestedList) == 0) {
              count += GetNestedArg(widget, (XtTypedArgList)avlist->value,
  				     args, resources, num_resources);
          } else {
              (args+count)->name = avlist->name;
              (args+count)->value = avlist->value;
              ++count;
          }
      }
  
      return(count);
  }
  
  void
  XtVaGetValues(Widget widget, ...)
  {
      va_list		var;
      String      	attr;
      ArgList    		args;
      XtTypedArg		typed_arg;
      XtResourceList      resources = (XtResourceList)NULL;
      Cardinal            num_resources;
      int			count, total_count, typed_count;
      WIDGET_TO_APPCON(widget);
  
      LOCK_APP(app);
      va_start(var,widget);
  
      _XtCountVaList(var, &total_count, &typed_count);
  
      if (total_count != typed_count) {
          args = (ArgList)__XtMalloc((unsigned)((total_count - typed_count)
  				* sizeof(Arg)));
      }
      else args = NULL;		/* for lint; really unused */
      va_end(var);
  
      va_start(var,widget);
      for(attr = va_arg(var, String), count = 0 ; attr != NULL;
  			attr = va_arg(var, String)) {
  	if (strcmp(attr, XtVaTypedArg) == 0) {
  	    typed_arg.name = va_arg(var, String);
  	    typed_arg.type = va_arg(var, String);
  	    typed_arg.value = va_arg(var, XtArgVal);
  	    typed_arg.size = va_arg(var, int);
  
  	    if (resources == NULL) {
  		XtGetResourceList(XtClass(widget), &resources,&num_resources);
  	    }
  
  	    GetTypedArg(widget, &typed_arg, resources, num_resources);
  	} else if (strcmp(attr, XtVaNestedList) == 0) {
  	    if (resources == NULL) {
  		XtGetResourceList(XtClass(widget),&resources, &num_resources);
  	    }
  
  	    count += GetNestedArg(widget, va_arg(var, XtTypedArgList),
  				     (args+count), resources, num_resources);
  	} else {
  	    args[count].name = attr;
  	    args[count].value = va_arg(var, XtArgVal);
  	    count ++;
  	}
      }
      va_end(var);
  
      if (resources != (XtResourceList)NULL) {
  	XtFree((XtPointer)resources);
      }
  
      if (total_count != typed_count) {
  	XtGetValues(widget, args, count);
  	XtFree((XtPointer)args);
      }
      UNLOCK_APP(app);
  }
  
  void
  XtVaGetSubvalues(XtPointer base,XtResourceList  resources, Cardinal num_resources, ...)
  {
      va_list	var;
      ArgList    	args;
      Cardinal   	num_args;
      int		total_count, typed_count;
  
      va_start(var,num_resources);
  
      _XtCountVaList(var, &total_count, &typed_count);
  
      if (typed_count != 0) {
  	XtWarning("XtVaTypedArg is an invalid argument to XtVaGetSubvalues()\n");
      }
      va_end(var);
  
      va_start(var,num_resources);
      _XtVaToArgList((Widget)NULL, var, total_count, &args, &num_args);
      va_end(var);
  
      XtGetSubvalues(base, resources, num_resources, args, num_args);
  
      if (num_args != 0) {
          XtFree((XtPointer)args);
      }
  }
  