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      1 /*
      2 
      3 Copyright 1988, 1998  The Open Group
      4 
      5 Permission to use, copy, modify, distribute, and sell this software and its
      6 documentation for any purpose is hereby granted without fee, provided that
      7 the above copyright notice appear in all copies and that both that
      8 copyright notice and this permission notice appear in supporting
      9 documentation.
     10 
     11 The above copyright notice and this permission notice shall be included in
     12 all copies or substantial portions of the Software.
     13 
     14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
     17 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
     18 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     19 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     20 
     21 Except as contained in this notice, the name of The Open Group shall not be
     22 used in advertising or otherwise to promote the sale, use or other dealings
     23 in this Software without prior written authorization from The Open Group.
     24 
     25 */
     26 
     27 #ifdef HAVE_CONFIG_H
     28 #include <config.h>
     29 #endif
     30 #include <X11/Intrinsic.h>
     31 #include "Converters.h"
     32 #include "CharSet.h"
     33 
     34 /*
     35  * Prototypes
     36  */
     37 static void InitializeQuarks(void);
     38 
     39 /*
     40  * Initialization
     41  */
     42 static XrmQuark QnotUseful, QwhenMapped, Qalways, Qdefault;
     43 static Boolean haveQuarks;
     44 
     45 /*
     46  * Implementation
     47  */
     48 static void
     49 InitializeQuarks(void)
     50 {
     51   if (!haveQuarks)
     52     {
     53       char name[11];
     54 
     55       XmuNCopyISOLatin1Lowered(name, XtEnotUseful, sizeof(name));
     56       QnotUseful = XrmStringToQuark(name);
     57       XmuNCopyISOLatin1Lowered(name, XtEwhenMapped, sizeof(name));
     58       QwhenMapped = XrmStringToQuark(name);
     59       XmuNCopyISOLatin1Lowered(name, XtEalways, sizeof(name));
     60       Qalways = XrmStringToQuark(name);
     61       XmuNCopyISOLatin1Lowered(name, XtEdefault, sizeof(name));
     62       Qdefault = XrmStringToQuark(name);
     63       haveQuarks = True;
     64     }
     65 }
     66 
     67 /*ARGSUSED*/
     68 void
     69 XmuCvtStringToBackingStore(XrmValue *args, Cardinal *num_args,
     70 			   XrmValuePtr fromVal, XrmValuePtr toVal)
     71 {
     72     XrmQuark	q;
     73   char name[11];
     74     static int	backingStoreType;
     75 
     76     if (*num_args != 0)
     77         XtWarning("String to BackingStore conversion needs no extra arguments");
     78 
     79   InitializeQuarks();
     80   XmuNCopyISOLatin1Lowered(name, (char *)fromVal->addr, sizeof(name));
     81 
     82   q = XrmStringToQuark (name);
     83   if (q == QnotUseful)
     84 	backingStoreType = NotUseful;
     85   else if (q == QwhenMapped)
     86     	backingStoreType = WhenMapped;
     87   else if (q == Qalways)
     88 	backingStoreType = Always;
     89   else if (q == Qdefault)
     90     	backingStoreType = Always + WhenMapped + NotUseful;
     91   else
     92     {
     93       XtStringConversionWarning((char *)fromVal->addr, XtRBackingStore);
     94       return;
     95     }
     96   toVal->size = sizeof(int);
     97   toVal->addr = (XPointer)&backingStoreType;
     98 }
     99 
    100 /*ARGSUSED*/
    101 Boolean
    102 XmuCvtBackingStoreToString(Display *dpy, XrmValuePtr args, Cardinal *num_args,
    103 			   XrmValuePtr fromVal, XrmValuePtr toVal,
    104 			   XtPointer *data)
    105 {
    106   static String buffer;
    107   Cardinal size;
    108 
    109   switch (*(int *)fromVal->addr)
    110     {
    111     case NotUseful:
    112       buffer = XtEnotUseful;
    113       break;
    114     case WhenMapped:
    115       buffer = XtEwhenMapped;
    116       break;
    117     case Always:
    118       buffer = XtEalways;
    119       break;
    120     case (Always + WhenMapped + NotUseful):
    121       buffer = XtEdefault;
    122       break;
    123     default:
    124       XtWarning("Cannot convert BackingStore to String");
    125       toVal->addr = NULL;
    126       toVal->size = 0;
    127       return (False);
    128     }
    129 
    130   size = strlen(buffer) + 1;
    131   if (toVal->addr != NULL)
    132     {
    133       if (toVal->size < size)
    134 	{
    135 	  toVal->size = size;
    136 	  return (False);
    137 	}
    138       strcpy((char *)toVal->addr, buffer);
    139     }
    140   else
    141     toVal->addr = (XPointer)buffer;
    142   toVal->size = sizeof(String);
    143 
    144   return (True);
    145 }
    146