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Diffstat (limited to 'libXfont/src/util/atom.c')
-rw-r--r--libXfont/src/util/atom.c487
1 files changed, 242 insertions, 245 deletions
diff --git a/libXfont/src/util/atom.c b/libXfont/src/util/atom.c
index bfb05ccbd..d2d628ece 100644
--- a/libXfont/src/util/atom.c
+++ b/libXfont/src/util/atom.c
@@ -1,245 +1,242 @@
-/* $Xorg: atom.c,v 1.5 2001/02/09 02:04:04 xorgcvs Exp $ */
-
-/*
-
-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.
-
-*/
-/* $XFree86: xc/lib/font/util/atom.c,v 1.9 2002/09/19 13:22:00 tsi Exp $ */
-
-/*
- * 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(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)
-{
- int ret = TRUE;
- if (reverseMapSize == 0)
- reverseMapSize = 1000;
- else
- reverseMapSize *= 2;
- reverseMap = realloc (reverseMap, reverseMapSize * sizeof (AtomListPtr));
- if (!reverseMap) {
- fprintf(stderr, "ResizeReverseMap(): Error: Couldn't reallocate"
- " reverseMap (%ld)\n",
- reverseMapSize * (unsigned long)sizeof(AtomListPtr));
- ret = FALSE;
- }
- return ret;
-}
-
-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(char *string, unsigned len, int makeit)
-{
- AtomListPtr a;
- int hash;
- int h = 0;
- int r;
-
- 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)
-{
- return (atom != None) && (atom <= lastAtom);
-}
-
-#ifdef __SUNPRO_C
-#pragma weak NameForAtom
-#endif
-
-weak char *
-NameForAtom(Atom atom)
-{
- if (atom != None && atom <= lastAtom)
- return reverseMap[atom]->name;
- return NULL;
-}
+/*
+
+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(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)
+{
+ int ret = TRUE;
+ if (reverseMapSize == 0)
+ reverseMapSize = 1000;
+ else
+ reverseMapSize *= 2;
+ reverseMap = realloc (reverseMap, reverseMapSize * sizeof (AtomListPtr));
+ if (!reverseMap) {
+ fprintf(stderr, "ResizeReverseMap(): Error: Couldn't reallocate"
+ " reverseMap (%ld)\n",
+ reverseMapSize * (unsigned long)sizeof(AtomListPtr));
+ ret = FALSE;
+ }
+ return ret;
+}
+
+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(char *string, unsigned len, int makeit)
+{
+ AtomListPtr a;
+ int hash;
+ int h = 0;
+ int r;
+
+ 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)
+{
+ return (atom != None) && (atom <= lastAtom);
+}
+
+#ifdef __SUNPRO_C
+#pragma weak NameForAtom
+#endif
+
+weak char *
+NameForAtom(Atom atom)
+{
+ if (atom != None && atom <= lastAtom)
+ return reverseMap[atom]->name;
+ return NULL;
+}
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