R6.6 is the Xorg base-lineXORG-MAIN

1 files changed, 565 insertions, 0 deletions

diff --git a/src/Varargs.c b/src/Varargs.c
new file mode 100644
index 0000000..e2a0f45
--- /dev/null
+++ b/src/Varargs.c
@@ -0,0 +1,565 @@
+/* $Xorg: Varargs.c,v 1.4 2001/02/09 02:03:59 xorgcvs Exp $ */
+
+/*
+
+Copyright 1985, 1986, 1987, 1988, 1989, 1994, 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.
+
+*/
+
+#include "IntrinsicI.h"
+#include "VarargsI.h"
+#include "StringDefs.h"
+
+static String XtNxtConvertVarToArgList = "xtConvertVarToArgList";
+
+/*
+ *    Given a nested list, _XtCountNestedList() returns counts of the
+ *    total number of attribute-value pairs and the count of those
+ *    attributes that are typed. The list is counted recursively.
+ */
+static  void
+_XtCountNestedList(avlist, total_count, typed_count)
+    XtTypedArgList  avlist;
+    int             *total_count;
+    int             *typed_count;
+{
+    for (; avlist->name != NULL; avlist++) {
+        if (strcmp(avlist->name, XtVaNestedList) == 0) {
+            _XtCountNestedList((XtTypedArgList)avlist->value, total_count,
+                	       typed_count);
+        } else {
+            if (avlist->type != NULL) {
+                ++(*typed_count);
+            }
+            ++(*total_count);
+        }
+    }    
+}
+
+
+/*
+ *    Given a variable length attribute-value list, _XtCountVaList()
+ *    returns counts of the total number of attribute-value pairs,
+ *    and the count of the number of those attributes that are typed.
+ *    The list is counted recursively.
+ */
+#if NeedFunctionPrototypes
+void
+_XtCountVaList(va_list var, int* total_count, int* typed_count)
+#else
+void
+_XtCountVaList(var, total_count, typed_count)
+    va_list     var;
+    int         *total_count;
+    int         *typed_count;
+#endif
+{
+    String          attr;
+    
+    *total_count = 0;
+    *typed_count = 0;
+ 
+    for(attr = va_arg(var, String) ; attr != NULL;
+                        attr = va_arg(var, String)) {
+        if (strcmp(attr, XtVaTypedArg) == 0) {
+            va_arg(var, String);
+            va_arg(var, String);
+            va_arg(var, XtArgVal);
+            va_arg(var, int);
+            ++(*total_count);
+            ++(*typed_count);
+        } else if (strcmp(attr, XtVaNestedList) == 0) {
+            _XtCountNestedList(va_arg(var, XtTypedArgList), total_count,
+                typed_count);
+        } else {
+            va_arg(var, XtArgVal);
+            ++(*total_count);
+	}
+    }
+}
+
+
+/* 
+ *   Given a variable length attribute-value list, XtVaCreateArgsList()
+ *   constructs an attribute-value list of type XtTypedArgList and 
+ *   returns the list.
+ */
+#if NeedVarargsPrototypes
+XtVarArgsList
+XtVaCreateArgsList(XtPointer unused, ...)
+#else
+/*ARGSUSED*/
+/*VARARGS1*/
+XtVarArgsList XtVaCreateArgsList(unused, va_alist)
+    XtPointer unused;
+    va_dcl
+#endif
+{
+    va_list var;
+    XtTypedArgList  avlist;
+    int		    count = 0;
+    String	    attr;
+
+    /*
+     * Count the number of attribute-value pairs in the list.
+     * Note: The count is required only to allocate enough space to store
+     * the list. Therefore nested lists are not counted recursively.
+     */
+    Va_start(var,unused);
+    for(attr = va_arg(var, String) ; attr != NULL;
+                        attr = va_arg(var, String)) {
+        ++count;
+        if (strcmp(attr, XtVaTypedArg) == 0) {
+            va_arg(var, String);
+            va_arg(var, String);
+            va_arg(var, XtArgVal);
+            va_arg(var, int);
+        } else {
+            va_arg(var, XtArgVal);
+        }
+    }
+    va_end(var);
+
+    Va_start(var,unused);
+    avlist = _XtVaCreateTypedArgList(var, count);
+    va_end(var);
+    return (XtVarArgsList)avlist;
+}
+
+
+#if NeedFunctionPrototypes
+XtTypedArgList _XtVaCreateTypedArgList(va_list var, register int count)
+#else
+XtTypedArgList _XtVaCreateTypedArgList(var, count)
+    va_list    	    var;     
+    register int    count;
+#endif
+{
+    String	    attr;
+    XtTypedArgList  avlist;
+
+    avlist = (XtTypedArgList)
+		__XtCalloc((int)count + 1, (unsigned)sizeof(XtTypedArg));
+
+    for(attr = va_arg(var, String), count = 0; attr != NULL; 
+		attr = va_arg(var, String)) {
+	if (strcmp(attr, XtVaTypedArg) == 0) {
+	    avlist[count].name = va_arg(var, String);
+	    avlist[count].type = va_arg(var, String);
+	    avlist[count].value = va_arg(var, XtArgVal);
+	    avlist[count].size = va_arg(var, int);
+	} else {
+	    avlist[count].name = attr;
+	    avlist[count].type = NULL;
+	    avlist[count].value = va_arg(var, XtArgVal);
+	}
+	++count;
+    }
+    avlist[count].name = NULL;
+
+    return avlist;
+}
+
+
+/*
+ *    TypedArgToArg() invokes a resource converter to convert the
+ *    passed typed arg into a name/value pair and stores the name/value
+ *    pair in the passed Arg structure.  If memory is allocated for the
+ *    converted value, the address is returned in the value field of 
+ *    memory_return; otherwise that field is NULL.  The function returns
+ *    1 if the conversion succeeded and 0 if the conversion failed.
+ */
+static int
+TypedArgToArg(widget, typed_arg, arg_return, resources, num_resources,
+		 memory_return)
+    Widget              widget;
+    XtTypedArgList      typed_arg;
+    ArgList             arg_return;
+    XtResourceList      resources;
+    Cardinal            num_resources;
+    ArgList		memory_return;
+{     
+    String              to_type = NULL;
+    XrmValue            from_val, to_val;
+      
+
+    if (widget == NULL) {
+        XtAppWarningMsg(XtWidgetToApplicationContext(widget),
+            "nullWidget", XtNxtConvertVarToArgList, XtCXtToolkitError,
+	    "XtVaTypedArg conversion needs non-NULL widget handle",
+            (String *)NULL, (Cardinal *)NULL);
+        return(0);
+    }
+       
+    /* again we assume that the XtResourceList is un-compiled */
+
+    for (; num_resources--; resources++)
+	if (strcmp(typed_arg->name, resources->resource_name) == 0) {
+	    to_type = resources->resource_type;
+	    break;
+	}
+
+    if (to_type == NULL) {
+        XtAppWarningMsg(XtWidgetToApplicationContext(widget),
+            "unknownType", XtNxtConvertVarToArgList, XtCXtToolkitError,
+            "Unable to find type of resource for conversion",
+            (String *)NULL, (Cardinal *)NULL);
+        return(0);
+    }
+       
+    to_val.addr = NULL;
+    from_val.size = typed_arg->size;
+    if ((strcmp(typed_arg->type, XtRString) == 0) ||
+            (typed_arg->size > sizeof(XtArgVal))) {
+        from_val.addr = (XPointer)typed_arg->value;
+    } else {
+            from_val.addr = (XPointer)&typed_arg->value;
+    }
+
+    LOCK_PROCESS;
+    XtConvertAndStore(widget, typed_arg->type, &from_val, to_type, &to_val);
+ 
+    if (to_val.addr == NULL) {
+	UNLOCK_PROCESS;
+        XtAppWarningMsg(XtWidgetToApplicationContext(widget),
+            "conversionFailed", XtNxtConvertVarToArgList, XtCXtToolkitError,
+            "Type conversion failed", (String *)NULL, (Cardinal *)NULL);
+        return(0);
+    }
+
+    arg_return->name = typed_arg->name;
+    memory_return->value = (XtArgVal) NULL;
+
+    if (strcmp(to_type, XtRString) == 0) {
+	arg_return->value = (XtArgVal) to_val.addr;
+    }
+    else {
+	if (to_val.size == sizeof(long))
+	    arg_return->value = (XtArgVal) *(long *)to_val.addr;
+	else if (to_val.size == sizeof(short))
+	    arg_return->value = (XtArgVal) *(short *)to_val.addr;
+	else if (to_val.size == sizeof(char))
+	    arg_return->value = (XtArgVal) *(char *)to_val.addr;
+	else if (to_val.size == sizeof(XtArgVal))
+	    arg_return->value = *(XtArgVal *)to_val.addr;
+	else if (to_val.size > sizeof(XtArgVal)) {
+	    arg_return->value = (XtArgVal) __XtMalloc(to_val.size);
+	    memory_return->value = (XtArgVal)
+		memcpy((void *)arg_return->value, to_val.addr, to_val.size);
+	}
+    }
+    UNLOCK_PROCESS;
+       
+    return(1);
+}
+
+
+/*
+ *    NestedArgtoArg() converts the passed nested list into
+ *    an ArgList/count.
+ */
+static int
+NestedArgtoArg(widget, avlist, args, resources, num_resources,
+		  memory_return)
+    Widget              widget;
+    XtTypedArgList      avlist;
+    ArgList             args;
+    XtResourceList      resources;
+    Cardinal            num_resources;
+    ArgList		memory_return;
+{
+    int         count = 0;
+ 
+    for (; avlist->name != NULL; avlist++) {
+        if (avlist->type != NULL) {
+            /* If widget is NULL, the typed arg is ignored */
+            if (widget != NULL) {
+                /* this is a typed arg */
+                count += TypedArgToArg(widget, avlist, (args+count),
+					  resources, num_resources,
+					  (memory_return+count));
+            }
+        } else if (strcmp(avlist->name, XtVaNestedList) == 0) {
+            count += NestedArgtoArg(widget, (XtTypedArgList)avlist->value,
+				       (args+count), resources, num_resources,
+				       (memory_return+count));
+        } else {
+            (args+count)->name = avlist->name;
+            (args+count)->value = avlist->value;
+            ++count;
+        }
+    }
+
+    return(count);
+}
+
+/*
+ * Free memory allocated through _XtVaToArgList.  The actual args array
+ * size is expected to be total_count * 2, where total_count is the number
+ * of elements needed for resource representations.  The lower half of the
+ * array contains pairs of resource names and values as usual.  For each
+ * element [n] in the lower half of the array, the value field of the
+ * corresponding element [n + total_count] in the upper half of the array
+ * has been pressed into service in order to note whether the resource value
+ * is a pointer to memory that was allocated in TypedArgToArg.  In the
+ * upper half, if the value field is not NULL, it contains the address of
+ * memory which should now be freed.  That memory could have been allocated
+ * only as a result of the conversion of typed arguments.  Therefore, if
+ * there were no typed arguments in the original varargs, there is no need
+ * to examine the upper half of the array.  In the choice of data structure
+ * to make this representation, priority was given to the wish to retrofit
+ * the release of memory around the existing signature of _XtVaToArgList.
+ */
+#if NeedFunctionPrototypes
+void
+_XtFreeArgList(
+    ArgList	args,	     /* as returned by _XtVaToArgList */
+    int		total_count, /*  argument count returned by _XtCountVaList */
+    int 	typed_count) /* typed arg count returned by _XtCountVaList */
+#else
+void
+_XtFreeArgList(args, total_count, typed_count)
+    ArgList	args;
+    int		total_count;
+    int 	typed_count;
+#endif
+{
+    ArgList p;
+
+    if (args) {
+	if (typed_count)
+	    for (p = args + total_count; total_count--; ++p) {
+		if (p->value) XtFree((char *)p->value);
+	    }
+	XtFree((char *)args);
+    }
+}
+
+
+static void		GetResources();
+
+ 
+/* 
+ *    Given a variable argument list, _XtVaToArgList() returns the 
+ *    equivalent ArgList and count. _XtVaToArgList() handles nested 
+ *    lists and typed arguments.  If typed arguments are present, the
+ *    ArgList should be freed with _XtFreeArgList.
+ */
+#if NeedFunctionPrototypes
+void
+_XtVaToArgList(
+    Widget		widget,
+    va_list     	var,
+    int			max_count,
+    ArgList		*args_return,
+    Cardinal		*num_args_return)
+#else
+void
+_XtVaToArgList(widget, var, max_count, args_return, num_args_return)
+    Widget		widget;
+    va_list     	var;
+    int			max_count;
+    ArgList		*args_return;
+    Cardinal		*num_args_return;
+#endif
+{
+    String		attr;
+    int			count;
+    ArgList		args = (ArgList)NULL;
+    XtTypedArg		typed_arg;
+    XtResourceList	resources = (XtResourceList)NULL;
+    Cardinal		num_resources;
+    Boolean		fetched_resource_list = False;
+
+    if (max_count  == 0) {
+	*num_args_return = 0;
+	*args_return = (ArgList)NULL;
+	return;
+    }
+
+    args = (ArgList)__XtMalloc((unsigned)(max_count * 2 * sizeof(Arg)));
+    for (count = max_count * 2; --count >= 0; )
+	args[count].value = (XtArgVal) NULL;
+    count = 0;
+
+    for(attr = va_arg(var, String) ; 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 widget is NULL, typed args are ignored */
+	    if (widget != NULL) {
+		if (!fetched_resource_list) {
+		    GetResources(widget, &resources, &num_resources);
+		    fetched_resource_list = True;
+		}
+		count += TypedArgToArg(widget, &typed_arg, &args[count],
+					  resources, num_resources,
+					  &args[max_count + count]);
+	    }
+	} else if (strcmp(attr, XtVaNestedList) == 0) {
+	    if (widget != NULL) {
+		if (!fetched_resource_list) {
+		    GetResources(widget, &resources, &num_resources);
+		    fetched_resource_list = True;
+		}
+	    }
+
+	    count += NestedArgtoArg(widget, va_arg(var, XtTypedArgList),
+				       &args[count], resources, num_resources,
+				       &args[max_count + count]);
+	} else {
+	    args[count].name = attr;
+	    args[count].value = va_arg(var, XtArgVal);
+	    count ++;
+	}
+    }
+
+    if (resources != NULL)
+	XtFree((XtPointer)resources);
+
+    *num_args_return = (Cardinal)count;
+    *args_return = (ArgList)args;
+}
+
+/*	Function Name: GetResources
+ *	Description: Retreives the normal and constraint resources
+ *                   for this widget.
+ *	Arguments: widget - the widget.
+ * RETURNED        res_list - the list of resource for this widget
+ * RETURNED        number - the number of resources in the above list.
+ *	Returns: none
+ */
+
+static void
+GetResources(widget, res_list, number)
+Widget widget;
+XtResourceList * res_list;
+Cardinal * number;
+{
+    Widget parent = XtParent(widget);
+
+    XtInitializeWidgetClass(XtClass(widget));
+    XtGetResourceList(XtClass(widget), res_list, number);
+    
+    if (!XtIsShell(widget) && parent && XtIsConstraint(parent)) {
+	XtResourceList res, constraint, cons_top;
+	Cardinal num_constraint, temp;
+
+	XtGetConstraintResourceList(XtClass(parent), &constraint, 
+				    &num_constraint);
+
+	cons_top = constraint;
+	*res_list = (XtResourceList) XtRealloc((char*)*res_list, 
+					       ((*number + num_constraint) * 
+						sizeof(XtResource)));
+
+	for (temp= num_constraint, res= *res_list + *number; temp != 0; temp--)
+	    *res++ = *constraint++;
+
+	*number += num_constraint;
+	XtFree( (XtPointer) cons_top);
+    }
+}
+
+static int NestedArgtoTypedArg(args, avlist) 
+    XtTypedArgList      args;
+    XtTypedArgList      avlist;
+{    
+    int         count = 0;
+     
+    for (; avlist->name != NULL; avlist++) { 
+        if (avlist->type != NULL) { 
+            (args+count)->name = avlist->name; 
+            (args+count)->type = avlist->type; 
+            (args+count)->size = avlist->size;
+            (args+count)->value = avlist->value;
+            ++count; 
+        } else if(strcmp(avlist->name, XtVaNestedList) == 0) {             
+            count += NestedArgtoTypedArg((args+count),  
+                            (XtTypedArgList)avlist->value); 
+        } else {                             
+            (args+count)->name = avlist->name; 
+	    (args+count)->type = NULL;
+            (args+count)->value = avlist->value; 
+            ++count;
+        }                                     
+    }         
+    return(count);
+}
+
+
+/*
+ *    Given a variable argument list, _XtVaToTypedArgList() returns 
+ *    the equivalent TypedArgList. _XtVaToTypedArgList() handles nested
+ *    lists.
+ *    Note: _XtVaToTypedArgList() does not do type conversions.
+ */
+#if NeedFunctionPrototypes
+void
+_XtVaToTypedArgList(
+    va_list             var,
+    int			max_count,
+    XtTypedArgList   	*args_return,
+    Cardinal            *num_args_return)
+#else
+void
+_XtVaToTypedArgList(var, max_count, args_return, num_args_return)
+    va_list             var;
+    int			max_count;
+    XtTypedArgList   	*args_return;
+    Cardinal            *num_args_return;
+#endif
+{
+    XtTypedArgList	args = NULL;
+    String              attr;
+    int			count;
+
+    args = (XtTypedArgList)
+	__XtMalloc((unsigned)(max_count * sizeof(XtTypedArg))); 
+
+    for(attr = va_arg(var, String), count = 0 ; attr != NULL;
+		    attr = va_arg(var, String)) {
+        if (strcmp(attr, XtVaTypedArg) == 0) {
+	    args[count].name = va_arg(var, String);
+	    args[count].type = va_arg(var, String);
+	    args[count].value = va_arg(var, XtArgVal);
+	    args[count].size = va_arg(var, int);
+	    ++count;
+	} else if (strcmp(attr, XtVaNestedList) == 0) {
+   	    count += NestedArgtoTypedArg(&args[count], 
+			va_arg(var, XtTypedArgList));
+	} else {
+	    args[count].name = attr;
+	    args[count].type = NULL;
+	    args[count].value = va_arg(var, XtArgVal);
+	    ++count;
+	}
+    }
+
+    *args_return = args;
+    *num_args_return = count;
+}