1 /***********************************************************
2 Copyright 1987, 1998 The Open Group
4 Permission to use, copy, modify, distribute, and sell this software and its
5 documentation for any purpose is hereby granted without fee, provided that
6 the above copyright notice appear in all copies and that both that
7 copyright notice and this permission notice appear in supporting
10 The above copyright notice and this permission notice shall be included in
11 all copies or substantial portions of the Software.
13 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
17 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
18 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
20 Except as contained in this notice, the name of The Open Group shall not be
21 used in advertising or otherwise to promote the sale, use or other dealings
22 in this Software without prior written authorization from The Open Group.
25 Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
29 Permission to use, copy, modify, and distribute this software and its
30 documentation for any purpose and without fee is hereby granted,
31 provided that the above copyright notice appear in all copies and that
32 both that copyright notice and this permission notice appear in
33 supporting documentation, and that the name of Digital not be
34 used in advertising or publicity pertaining to distribution of the
35 software without specific, written prior permission.
37 DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
38 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
39 DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
40 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
41 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
42 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
45 ******************************************************************/
47 /************************************************************
48 Copyright 1994 by Silicon Graphics Computer Systems, Inc.
50 Permission to use, copy, modify, and distribute this
51 software and its documentation for any purpose and without
52 fee is hereby granted, provided that the above copyright
53 notice appear in all copies and that both that copyright
54 notice and this permission notice appear in supporting
55 documentation, and that the name of Silicon Graphics not be
56 used in advertising or publicity pertaining to distribution
57 of the software without specific prior written permission.
58 Silicon Graphics makes no representation about the suitability
59 of this software for any purpose. It is provided "as is"
60 without any express or implied warranty.
62 SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
63 SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
64 AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
65 GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
66 DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
67 DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
68 OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH
69 THE USE OR PERFORMANCE OF THIS SOFTWARE.
71 ********************************************************/
77 #include "X11/extensions/XKBcommon.h"
78 #include "XKBcommonint.h"
80 #define InitialTableSize 100
82 typedef struct _Node {
83 struct _Node *left, *right;
85 unsigned int fingerPrint;
89 #define BAD_RESOURCE 0xe0000000
91 static uint32_t lastAtom = None;
92 static NodePtr atomRoot = NULL;
93 static unsigned long tableLength;
94 static NodePtr *nodeTable = NULL;
95 static InternAtomFuncPtr do_intern_atom = NULL;
96 static GetAtomValueFuncPtr do_get_atom_value = NULL;
99 xkb_init_atoms(InternAtomFuncPtr intern, GetAtomValueFuncPtr get_atom_value)
101 if (intern && get_atom_value) {
102 if (do_intern_atom && do_get_atom_value)
104 do_intern_atom = intern;
105 do_get_atom_value = get_atom_value;
111 XkbcAtomText(uint32_t atom)
115 if (do_get_atom_value)
116 return do_get_atom_value(atom);
118 if ((atom == None) || (atom > lastAtom))
120 if (!(node = nodeTable[atom]))
126 XkbcAtomGetString(uint32_t atom)
128 const char *ret = XkbcAtomText(atom);
129 return ret ? strdup(ret) : NULL;
133 _XkbcMakeAtom(const char *string, unsigned len, Bool makeit)
141 for (i = 0; i < (len + 1) / 2; i++) {
142 fp = fp * 27 + string[i];
143 fp = fp * 27 + string[len - 1 - i];
147 if (fp < (*np)->fingerPrint)
149 else if (fp > (*np)->fingerPrint)
150 np = &((*np)->right);
152 /* now start testing the strings */
153 comp = strncmp(string, (*np)->string, (int)len);
154 if ((comp < 0) || ((comp == 0) && (len < strlen((*np)->string))))
157 np = &((*np)->right);
166 nd = (NodePtr)malloc(sizeof(NodeRec));
170 nd->string = (char *)malloc(len + 1);
175 strncpy(nd->string, string, (int)len);
178 if ((lastAtom + 1) >= tableLength) {
182 if (tableLength == 0)
183 newLength = InitialTableSize;
185 newLength = tableLength * 2;
187 table = realloc(nodeTable, newLength * sizeof(NodePtr));
189 if (nd->string != string)
194 tableLength = newLength;
201 nd->left = nd->right = NULL;
202 nd->fingerPrint = fp;
203 nd->a = (++lastAtom);
204 *(nodeTable + lastAtom) = nd;
213 XkbcInternAtom(const char *name, Bool onlyIfExists)
218 return do_intern_atom(name);
219 return _XkbcMakeAtom(name, strlen(name), !onlyIfExists);