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Diffstat (limited to 'xorg-server/dix/atom.c')
-rw-r--r--xorg-server/dix/atom.c430
1 files changed, 218 insertions, 212 deletions
diff --git a/xorg-server/dix/atom.c b/xorg-server/dix/atom.c
index f5bf8ad7e..210641bd4 100644
--- a/xorg-server/dix/atom.c
+++ b/xorg-server/dix/atom.c
@@ -1,212 +1,218 @@
-/***********************************************************
-
-Copyright 1987, 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.
-
-
-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name of Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-******************************************************************/
-
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <X11/X.h>
-#include <X11/Xatom.h>
-#include <stdio.h>
-#include <string.h>
-#include "misc.h"
-#include "resource.h"
-#include "dix.h"
-
-#define InitialTableSize 100
-
-typedef struct _Node {
- struct _Node *left, *right;
- Atom a;
- unsigned int fingerPrint;
- const char *string;
-} NodeRec, *NodePtr;
-
-static Atom lastAtom = None;
-static NodePtr atomRoot = (NodePtr)NULL;
-static unsigned long tableLength;
-static NodePtr *nodeTable;
-
-void FreeAtom(NodePtr patom);
-
-Atom
-MakeAtom(const char *string, unsigned len, Bool makeit)
-{
- NodePtr * np;
- unsigned i;
- int comp;
- unsigned int fp = 0;
-
- np = &atomRoot;
- for (i = 0; i < (len+1)/2; i++)
- {
- fp = fp * 27 + string[i];
- fp = fp * 27 + string[len - 1 - i];
- }
- while (*np != (NodePtr) NULL)
- {
- if (fp < (*np)->fingerPrint)
- np = &((*np)->left);
- else if (fp > (*np)->fingerPrint)
- np = &((*np)->right);
- else
- { /* now start testing the strings */
- comp = strncmp(string, (*np)->string, (int)len);
- if ((comp < 0) || ((comp == 0) && (len < strlen((*np)->string))))
- np = &((*np)->left);
- else if (comp > 0)
- np = &((*np)->right);
- else
- return(*np)->a;
- }
- }
- if (makeit)
- {
- NodePtr nd;
-
- nd = xalloc(sizeof(NodeRec));
- if (!nd)
- return BAD_RESOURCE;
- if (lastAtom < XA_LAST_PREDEFINED)
- {
- nd->string = string;
- }
- else
- {
- char *newstring = xalloc(len + 1);
- if (!newstring) {
- xfree(nd);
- return BAD_RESOURCE;
- }
- strncpy(newstring, string, (int)len);
- newstring[len] = 0;
- nd->string = newstring;
- }
- if ((lastAtom + 1) >= tableLength) {
- NodePtr *table;
-
- table = (NodePtr *) xrealloc(nodeTable,
- tableLength * (2 * sizeof(NodePtr)));
- if (!table) {
- if (nd->string != string)
- xfree(nd->string);
- xfree(nd);
- return BAD_RESOURCE;
- }
- tableLength <<= 1;
- nodeTable = table;
- }
- *np = nd;
- nd->left = nd->right = (NodePtr) NULL;
- nd->fingerPrint = fp;
- nd->a = (++lastAtom);
- *(nodeTable+lastAtom) = nd;
- return nd->a;
- }
- else
- return None;
-}
-
-Bool
-ValidAtom(Atom atom)
-{
- return (atom != None) && (atom <= lastAtom);
-}
-
-const char *
-NameForAtom(Atom atom)
-{
- NodePtr node;
- if (atom > lastAtom) return 0;
- if ((node = nodeTable[atom]) == (NodePtr)NULL) return 0;
- return node->string;
-}
-
-void
-AtomError(void)
-{
- FatalError("initializing atoms");
-}
-
-void
-FreeAtom(NodePtr patom)
-{
- if(patom->left)
- FreeAtom(patom->left);
- if(patom->right)
- FreeAtom(patom->right);
- if (patom->a > XA_LAST_PREDEFINED)
- xfree(patom->string);
- xfree(patom);
-}
-
-void
-FreeAllAtoms(void)
-{
- if(atomRoot == (NodePtr)NULL)
- return;
- FreeAtom(atomRoot);
- atomRoot = (NodePtr)NULL;
- xfree(nodeTable);
- nodeTable = (NodePtr *)NULL;
- lastAtom = None;
-}
-
-void
-InitAtoms(void)
-{
- FreeAllAtoms();
- tableLength = InitialTableSize;
- nodeTable = xalloc(InitialTableSize*sizeof(NodePtr));
- if (!nodeTable)
- AtomError();
- nodeTable[None] = (NodePtr)NULL;
- MakePredeclaredAtoms();
- if (lastAtom != XA_LAST_PREDEFINED)
- AtomError ();
-}
+/***********************************************************
+
+Copyright 1987, 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.
+
+
+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xatom.h>
+#include <stdio.h>
+#include <string.h>
+#include "misc.h"
+#include "resource.h"
+#include "dix.h"
+
+#define InitialTableSize 100
+
+typedef struct _Node {
+ struct _Node *left, *right;
+ Atom a;
+ unsigned int fingerPrint;
+ const char *string;
+} NodeRec, *NodePtr;
+
+static Atom lastAtom = None;
+static NodePtr atomRoot = NULL;
+static unsigned long tableLength;
+static NodePtr *nodeTable;
+
+void FreeAtom(NodePtr patom);
+
+Atom
+MakeAtom(const char *string, unsigned len, Bool makeit)
+{
+ NodePtr * np;
+ unsigned i;
+ int comp;
+ unsigned int fp = 0;
+
+ np = &atomRoot;
+ for (i = 0; i < (len+1)/2; i++)
+ {
+ fp = fp * 27 + string[i];
+ fp = fp * 27 + string[len - 1 - i];
+ }
+ while (*np != NULL)
+ {
+ if (fp < (*np)->fingerPrint)
+ np = &((*np)->left);
+ else if (fp > (*np)->fingerPrint)
+ np = &((*np)->right);
+ else
+ { /* now start testing the strings */
+ comp = strncmp(string, (*np)->string, (int)len);
+ if ((comp < 0) || ((comp == 0) && (len < strlen((*np)->string))))
+ np = &((*np)->left);
+ else if (comp > 0)
+ np = &((*np)->right);
+ else
+ return(*np)->a;
+ }
+ }
+ if (makeit)
+ {
+ NodePtr nd;
+
+ nd = malloc(sizeof(NodeRec));
+ if (!nd)
+ return BAD_RESOURCE;
+ if (lastAtom < XA_LAST_PREDEFINED)
+ {
+ nd->string = string;
+ }
+ else
+ {
+ char *newstring = malloc(len + 1);
+ if (!newstring) {
+ free(nd);
+ return BAD_RESOURCE;
+ }
+ strncpy(newstring, string, (int)len);
+ newstring[len] = 0;
+ nd->string = newstring;
+ }
+ if ((lastAtom + 1) >= tableLength) {
+ NodePtr *table;
+
+ table = realloc(nodeTable, tableLength * (2 * sizeof(NodePtr)));
+ if (!table) {
+ if (nd->string != string) {
+ /* nd->string has been strdup'ed */
+ free((char *)nd->string);
+ }
+ free(nd);
+ return BAD_RESOURCE;
+ }
+ tableLength <<= 1;
+ nodeTable = table;
+ }
+ *np = nd;
+ nd->left = nd->right = NULL;
+ nd->fingerPrint = fp;
+ nd->a = ++lastAtom;
+ nodeTable[lastAtom] = nd;
+ return nd->a;
+ }
+ else
+ return None;
+}
+
+Bool
+ValidAtom(Atom atom)
+{
+ return (atom != None) && (atom <= lastAtom);
+}
+
+const char *
+NameForAtom(Atom atom)
+{
+ NodePtr node;
+ if (atom > lastAtom) return 0;
+ if ((node = nodeTable[atom]) == NULL) return 0;
+ return node->string;
+}
+
+void
+AtomError(void)
+{
+ FatalError("initializing atoms");
+}
+
+void
+FreeAtom(NodePtr patom)
+{
+ if(patom->left)
+ FreeAtom(patom->left);
+ if(patom->right)
+ FreeAtom(patom->right);
+ if (patom->a > XA_LAST_PREDEFINED) {
+ /*
+ * All strings above XA_LAST_PREDEFINED are strdup'ed, so it's safe to
+ * cast here
+ */
+ free((char *)patom->string);
+ }
+ free(patom);
+}
+
+void
+FreeAllAtoms(void)
+{
+ if (atomRoot == NULL)
+ return;
+ FreeAtom(atomRoot);
+ atomRoot = NULL;
+ free(nodeTable);
+ nodeTable = NULL;
+ lastAtom = None;
+}
+
+void
+InitAtoms(void)
+{
+ FreeAllAtoms();
+ tableLength = InitialTableSize;
+ nodeTable = malloc(InitialTableSize * sizeof(NodePtr));
+ if (!nodeTable)
+ AtomError();
+ nodeTable[None] = NULL;
+ MakePredeclaredAtoms();
+ if (lastAtom != XA_LAST_PREDEFINED)
+ AtomError();
+}
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