diff options
Diffstat (limited to 'src/util/atom.c')
| -rw-r--r-- | src/util/atom.c | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/src/util/atom.c b/src/util/atom.c deleted file mode 100644 index 5f7f1c6..0000000 --- a/src/util/atom.c +++ /dev/null @@ -1,250 +0,0 @@ -/* - -Copyright 1990, 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. - -*/ - -/* - * Author: Keith Packard, MIT X Consortium - */ - -/* lame atom replacement routines for font applications */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <X11/fonts/fontmisc.h> -#include "stubs.h" - -typedef struct _AtomList { - char *name; - int len; - int hash; - Atom atom; -} AtomListRec, *AtomListPtr; - -static AtomListPtr *hashTable; - -static int hashSize, hashUsed; -static int hashMask; -static int rehash; - -static AtomListPtr *reverseMap; -static int reverseMapSize; -static Atom lastAtom; - -static int -Hash(const char *string, int len) -{ - int h; - - h = 0; - while (len--) - h = (h << 3) ^ *string++; - if (h < 0) - return -h; - return h; -} - -static int -ResizeHashTable (void) -{ - int newHashSize; - int newHashMask; - AtomListPtr *newHashTable; - int i; - int h; - int newRehash; - int r; - - if (hashSize == 0) - newHashSize = 1024; - else - newHashSize = hashSize * 2; - newHashTable = calloc (newHashSize, sizeof (AtomListPtr)); - if (!newHashTable) { - fprintf(stderr, "ResizeHashTable(): Error: Couldn't allocate" - " newHashTable (%ld)\n", - newHashSize * (unsigned long)sizeof (AtomListPtr)); - return FALSE; - } - newHashMask = newHashSize - 1; - newRehash = (newHashMask - 2); - for (i = 0; i < hashSize; i++) - { - if (hashTable[i]) - { - h = (hashTable[i]->hash) & newHashMask; - if (newHashTable[h]) - { - r = hashTable[i]->hash % newRehash | 1; - do { - h += r; - if (h >= newHashSize) - h -= newHashSize; - } while (newHashTable[h]); - } - newHashTable[h] = hashTable[i]; - } - } - free (hashTable); - hashTable = newHashTable; - hashSize = newHashSize; - hashMask = newHashMask; - rehash = newRehash; - return TRUE; -} - -static int -ResizeReverseMap (void) -{ - AtomListPtr *newMap; - int newMapSize; - - if (reverseMapSize == 0) - newMapSize = 1000; - else - newMapSize = reverseMapSize * 2; - newMap = realloc (reverseMap, newMapSize * sizeof (AtomListPtr)); - if (newMap == NULL) { - fprintf(stderr, "ResizeReverseMap(): Error: Couldn't reallocate" - " reverseMap (%ld)\n", - newMapSize * (unsigned long)sizeof(AtomListPtr)); - return FALSE; - } - reverseMap = newMap; - reverseMapSize = newMapSize; - return TRUE; -} - -static int -NameEqual (const char *a, const char *b, int l) -{ - while (l--) - if (*a++ != *b++) - return FALSE; - return TRUE; -} - -#ifdef __SUNPRO_C -#pragma weak MakeAtom -#endif - -weak Atom -MakeAtom(const char *string, unsigned len, int makeit) -{ - AtomListPtr a; - int hash; - int h = 0; - int r; - - OVERRIDE_SYMBOL(MakeAtom, string, len, makeit); - - hash = Hash (string, len); - if (hashTable) - { - h = hash & hashMask; - if (hashTable[h]) - { - if (hashTable[h]->hash == hash && hashTable[h]->len == len && - NameEqual (hashTable[h]->name, string, len)) - { - return hashTable[h]->atom; - } - r = (hash % rehash) | 1; - for (;;) - { - h += r; - if (h >= hashSize) - h -= hashSize; - if (!hashTable[h]) - break; - if (hashTable[h]->hash == hash && hashTable[h]->len == len && - NameEqual (hashTable[h]->name, string, len)) - { - return hashTable[h]->atom; - } - } - } - } - if (!makeit) - return None; - a = malloc (sizeof (AtomListRec) + len + 1); - if (a == NULL) { - fprintf(stderr, "MakeAtom(): Error: Couldn't allocate AtomListRec" - " (%ld)\n", (unsigned long)sizeof (AtomListRec) + len + 1); - return None; - } - a->name = (char *) (a + 1); - a->len = len; - strncpy (a->name, string, len); - a->name[len] = '\0'; - a->atom = ++lastAtom; - a->hash = hash; - if (hashUsed >= hashSize / 2) - { - ResizeHashTable (); - h = hash & hashMask; - if (hashTable[h]) - { - r = (hash % rehash) | 1; - do { - h += r; - if (h >= hashSize) - h -= hashSize; - } while (hashTable[h]); - } - } - hashTable[h] = a; - hashUsed++; - if (reverseMapSize <= a->atom) { - if (!ResizeReverseMap()) - return None; - } - reverseMap[a->atom] = a; - return a->atom; -} - -#ifdef __SUNPRO_C -#pragma weak ValidAtom -#endif - -weak int -ValidAtom(Atom atom) -{ - OVERRIDE_SYMBOL(ValidAtom, atom); - return (atom != None) && (atom <= lastAtom); -} - -#ifdef __SUNPRO_C -#pragma weak NameForAtom -#endif - -weak char * -NameForAtom(Atom atom) -{ - OVERRIDE_SYMBOL(NameForAtom, atom); - if (atom != None && atom <= lastAtom) - return reverseMap[atom]->name; - return NULL; -} |