KeysymStr.c revision b4ee4795 
1
2/*
3
4Copyright 1990, 1998  The Open Group
5
6Permission to use, copy, modify, distribute, and sell this software and its
7documentation for any purpose is hereby granted without fee, provided that
8the above copyright notice appear in all copies and that both that
9copyright notice and this permission notice appear in supporting
10documentation.
11
12The above copyright notice and this permission notice shall be included in
13all copies or substantial portions of the Software.
14
15THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
18OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
19AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21
22Except as contained in this notice, the name of The Open Group shall not be
23used in advertising or otherwise to promote the sale, use or other dealings
24in this Software without prior written authorization from The Open Group.
25
26*/
27
28#ifdef HAVE_CONFIG_H
29#include <config.h>
30#endif
31#include "Xlibint.h"
32#include <X11/Xresource.h>
33#include <X11/keysymdef.h>
34
35#include <stdio.h> /* sprintf */
36
37typedef unsigned long Signature;
38
39#define NEEDVTABLE
40#include "ks_tables.h"
41#include "Key.h"
42
43
44typedef struct _GRNData {
45    char *name;
46    XrmRepresentation type;
47    XrmValuePtr value;
48} GRNData;
49
50/*ARGSUSED*/
51static Bool
52SameValue(
53    XrmDatabase*	db,
54    XrmBindingList      bindings,
55    XrmQuarkList	quarks,
56    XrmRepresentation*  type,
57    XrmValuePtr		value,
58    XPointer		data
59)
60{
61    GRNData *gd = (GRNData *)data;
62
63    if ((*type == gd->type) && (value->size == gd->value->size) &&
64	!strncmp((char *)value->addr, (char *)gd->value->addr, value->size))
65    {
66	gd->name = XrmQuarkToString(*quarks); /* XXX */
67	return True;
68    }
69    return False;
70}
71
72char *XKeysymToString(KeySym ks)
73{
74    register int i, n;
75    int h;
76    register int idx;
77    const unsigned char *entry;
78    unsigned char val1, val2, val3, val4;
79    XrmDatabase keysymdb;
80
81    if (!ks || (ks & ((unsigned long) ~0x1fffffff)) != 0)
82	return ((char *)NULL);
83    if (ks == XK_VoidSymbol)
84	ks = 0;
85    if (ks <= 0x1fffffff)
86    {
87	val1 = ks >> 24;
88	val2 = (ks >> 16) & 0xff;
89	val3 = (ks >> 8) & 0xff;
90	val4 = ks & 0xff;
91	i = ks % VTABLESIZE;
92	h = i + 1;
93	n = VMAXHASH;
94	while ((idx = hashKeysym[i]))
95	{
96	    entry = &_XkeyTable[idx];
97	    if ((entry[0] == val1) && (entry[1] == val2) &&
98                (entry[2] == val3) && (entry[3] == val4))
99		return ((char *)entry + 4);
100	    if (!--n)
101		break;
102	    i += h;
103	    if (i >= VTABLESIZE)
104		i -= VTABLESIZE;
105	}
106    }
107
108    if ((keysymdb = _XInitKeysymDB()))
109    {
110	char buf[9];
111	XrmValue resval;
112	XrmQuark empty = NULLQUARK;
113	GRNData data;
114
115	sprintf(buf, "%lX", ks);
116	resval.addr = (XPointer)buf;
117	resval.size = strlen(buf) + 1;
118	data.name = (char *)NULL;
119	data.type = XrmPermStringToQuark("String");
120	data.value = &resval;
121	(void)XrmEnumerateDatabase(keysymdb, &empty, &empty, XrmEnumAllLevels,
122				   SameValue, (XPointer)&data);
123        if (data.name)
124	    return data.name;
125    }
126    if (ks >= 0x01000100 && ks <= 0x0110ffff) {
127        KeySym val = ks & 0xffffff;
128        char *s;
129        int i;
130        if (val & 0xff0000)
131            i = 10;
132        else
133            i = 6;
134        s = Xmalloc(i);
135        if (s == NULL)
136            return s;
137        i--;
138        s[i--] = '\0';
139        for (; i; i--){
140            val1 = val & 0xf;
141            val >>= 4;
142            if (val1 < 10)
143                s[i] = '0'+ val1;
144            else
145                s[i] = 'A'+ val1 - 10;
146        }
147        s[i] = 'U';
148        return s;
149    }
150    return ((char *) NULL);
151}
152