307 lines
8.3 KiB
C
307 lines
8.3 KiB
C
/*
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Copyright 1990, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from The Open Group.
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*/
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/*
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* Constructs hash tables for xkb_keysym_to_string and
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* xkb_string_from_keysym.
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*/
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#include "xkbcommon/xkbcommon.h"
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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typedef uint32_t Signature;
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#define KTNUM 4000
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static struct info {
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char *name;
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xkb_keysym_t val;
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} info[KTNUM];
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#define MIN_REHASH 15
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#define MATCHES 10
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static char tab[KTNUM];
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static unsigned short offsets[KTNUM];
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static unsigned short indexes[KTNUM];
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static xkb_keysym_t values[KTNUM];
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static int ksnum = 0;
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static int
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parse_line(const char *buf, char *key, xkb_keysym_t *val, char *prefix)
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{
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int i;
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char alias[128];
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/* See if we can catch a straight XK_foo 0x1234-style definition first;
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* the trickery around tmp is to account for prefices. */
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i = sscanf(buf, "#define %127s 0x%"SCNx32, key, val);
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if (i == 2 && strncmp(key, "XKB_KEY_", 8) == 0) {
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prefix[0] = '\0';
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memmove(key, key + 8, strlen(key + 8) + 1);
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return 1;
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}
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i = sscanf(buf, "#define %127s %127s", key, alias);
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if (i == 2)
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fprintf(stderr, "can't parse keysym definition: %s", buf);
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return 0;
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}
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int
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main(int argc, char *argv[])
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{
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FILE *fptr;
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int max_rehash;
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Signature sig;
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int i, j, k, l, z;
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char *name;
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char c;
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int first;
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int best_max_rehash;
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int best_z = 0;
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int num_found;
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xkb_keysym_t val;
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char key[128], prefix[128];
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char buf[1024];
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for (l = 1; l < argc; l++) {
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fptr = fopen(argv[l], "r");
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if (!fptr) {
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fprintf(stderr, "couldn't open %s\n", argv[l]);
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continue;
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}
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while (fgets(buf, sizeof(buf), fptr)) {
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if (!parse_line(buf, key, &val, prefix))
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continue;
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if (val == XKB_KEY_VoidSymbol)
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val = 0;
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if (val > 0x1fffffff) {
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fprintf(stderr, "ignoring illegal keysym (%s, %"PRIx32")\n", key,
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val);
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continue;
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}
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name = malloc(strlen(prefix) + strlen(key) + 1);
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if (!name) {
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fprintf(stderr, "makekeys: out of memory!\n");
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exit(1);
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}
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sprintf(name, "%s%s", prefix, key);
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info[ksnum].name = name;
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info[ksnum].val = val;
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ksnum++;
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if (ksnum == KTNUM) {
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fprintf(stderr, "makekeys: too many keysyms!\n");
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exit(1);
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}
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}
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fclose(fptr);
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}
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/* Special case XKB_KEY_NoSymbol. */
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info[ksnum].name = strdup("NoSymbol");
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info[ksnum].val = XKB_KEY_NoSymbol;
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ksnum++;
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printf("/* This file is generated from keysymdef.h. */\n");
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printf("/* Do not edit. */\n");
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printf("\n");
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best_max_rehash = ksnum;
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num_found = 0;
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for (z = ksnum; z < KTNUM; z++) {
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max_rehash = 0;
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for (name = tab, i = z; --i >= 0;)
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*name++ = 0;
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for (i = 0; i < ksnum; i++) {
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name = info[i].name;
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sig = 0;
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while ((c = *name++))
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sig = (sig << 1) + c;
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first = j = sig % z;
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for (k = 0; tab[j]; k++) {
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j += first + 1;
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if (j >= z)
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j -= z;
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if (j == first)
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goto next1;
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}
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tab[j] = 1;
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if (k > max_rehash)
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max_rehash = k;
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}
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if (max_rehash < MIN_REHASH) {
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if (max_rehash < best_max_rehash) {
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best_max_rehash = max_rehash;
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best_z = z;
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}
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num_found++;
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if (num_found >= MATCHES)
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break;
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}
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next1: ;
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}
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z = best_z;
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printf("#ifndef KS_TABLES_H\n");
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printf("#define KS_TABLES_H\n\n");
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printf("static const unsigned char _XkeyTable[] = {\n");
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if (z == 0) {
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fprintf(stderr, "makekeys: failed to find small enough hash!\n"
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"Try increasing KTNUM in makekeys.c\n");
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exit(1);
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}
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printf("0,\n");
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k = 1;
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for (i = 0; i < ksnum; i++) {
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name = info[i].name;
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sig = 0;
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while ((c = *name++))
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sig = (sig << 1) + c;
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first = j = sig % z;
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while (offsets[j]) {
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j += first + 1;
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if (j >= z)
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j -= z;
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}
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offsets[j] = k;
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indexes[i] = k;
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val = info[i].val;
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printf("0x%.2"PRIx32", 0x%.2"PRIx32", 0x%.2"PRIx32", "
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"0x%.2"PRIx32", 0x%.2"PRIx32", 0x%.2"PRIx32", ",
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(sig >> 8) & 0xff, sig & 0xff, (val >> 24) & 0xff,
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(val >> 16) & 0xff, (val >> 8) & 0xff, val & 0xff);
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for (name = info[i].name, k += 7; (c = *name++); k++)
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printf("'%c',", c);
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printf((i == (ksnum-1)) ? "0\n" : "0,\n");
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}
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printf("};\n");
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printf("\n");
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printf("#define KTABLESIZE %d\n", z);
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printf("#define KMAXHASH %d\n", best_max_rehash + 1);
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printf("\n");
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printf("static const unsigned short hashString[KTABLESIZE] = {\n");
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for (i = 0; i < z;) {
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printf("0x%.4x", offsets[i]);
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i++;
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if (i == z)
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break;
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printf((i & 7) ? ", " : ",\n");
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}
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printf("\n");
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printf("};\n");
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best_max_rehash = ksnum;
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num_found = 0;
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for (z = ksnum; z < KTNUM; z++) {
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max_rehash = 0;
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for (name = tab, i = z; --i >= 0;)
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*name++ = 0;
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for (i = 0; i < ksnum; i++) {
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val = info[i].val;
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first = j = val % z;
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for (k = 0; tab[j]; k++) {
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if (values[j] == val)
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goto skip1;
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j += first + 1;
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if (j >= z)
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j -= z;
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if (j == first)
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goto next2;
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}
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tab[j] = 1;
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values[j] = val;
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if (k > max_rehash)
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max_rehash = k;
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skip1: ;
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}
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if (max_rehash < MIN_REHASH) {
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if (max_rehash < best_max_rehash) {
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best_max_rehash = max_rehash;
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best_z = z;
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}
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num_found++;
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if (num_found >= MATCHES)
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break;
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}
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next2: ;
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}
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z = best_z;
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if (z == 0) {
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fprintf(stderr, "makekeys: failed to find small enough hash!\n"
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"Try increasing KTNUM in makekeys.c\n");
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exit(1);
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}
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for (i = z; --i >= 0;)
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offsets[i] = 0;
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for (i = 0; i < ksnum; i++) {
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val = info[i].val;
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first = j = val % z;
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while (offsets[j]) {
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if (values[j] == val)
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goto skip2;
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j += first + 1;
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if (j >= z)
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j -= z;
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}
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offsets[j] = indexes[i] + 2;
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values[j] = val;
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skip2: ;
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}
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printf("\n");
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printf("#define VTABLESIZE %d\n", z);
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printf("#define VMAXHASH %d\n", best_max_rehash + 1);
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printf("\n");
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printf("static const unsigned short hashKeysym[VTABLESIZE] = {\n");
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for (i = 0; i < z;) {
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printf("0x%.4x", offsets[i]);
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i++;
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if (i == z)
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break;
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printf((i & 7) ? ", " : ",\n");
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}
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printf("\n");
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printf("};\n");
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printf("\n#endif /* KS_TABLES_H */\n");
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for (i = 0; i < ksnum; i++)
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free(info[i].name);
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exit(0);
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}
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