--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.desktop/share/native/libfontmanager/layout/LigatureSubstProc2.cpp Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,189 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+/*
+ *
+ * (C) Copyright IBM Corp and Others. 1998-2013 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "MorphTables.h"
+#include "StateTables.h"
+#include "MorphStateTables.h"
+#include "SubtableProcessor2.h"
+#include "StateTableProcessor2.h"
+#include "LigatureSubstProc2.h"
+#include "LEGlyphStorage.h"
+#include "LESwaps.h"
+
+U_NAMESPACE_BEGIN
+
+#define ExtendedComplement(m) ((le_int32) (~((le_uint32) (m))))
+#define SignBit(m) ((ExtendedComplement(m) >> 1) & (le_int32)(m))
+#define SignExtend(v,m) (((v) & SignBit(m))? ((v) | ExtendedComplement(m)): (v))
+
+UOBJECT_DEFINE_RTTI_IMPLEMENTATION(LigatureSubstitutionProcessor2)
+
+LigatureSubstitutionProcessor2::LigatureSubstitutionProcessor2(const LEReferenceTo<MorphSubtableHeader2> &morphSubtableHeader, LEErrorCode &success)
+ : StateTableProcessor2(morphSubtableHeader, success),
+ ligActionOffset(0),
+ ligatureSubstitutionHeader(morphSubtableHeader, success), componentOffset(0), ligatureOffset(0), entryTable()
+{
+ if (LE_FAILURE(success)) return;
+
+ ligActionOffset = SWAPL(ligatureSubstitutionHeader->ligActionOffset);
+ componentOffset = SWAPL(ligatureSubstitutionHeader->componentOffset);
+ ligatureOffset = SWAPL(ligatureSubstitutionHeader->ligatureOffset);
+
+ entryTable = LEReferenceToArrayOf<LigatureSubstitutionStateEntry2>(stHeader, success, entryTableOffset, LE_UNBOUNDED_ARRAY);
+}
+
+LigatureSubstitutionProcessor2::~LigatureSubstitutionProcessor2()
+{
+}
+
+void LigatureSubstitutionProcessor2::beginStateTable()
+{
+ m = -1;
+}
+
+le_uint16 LigatureSubstitutionProcessor2::processStateEntry(LEGlyphStorage &glyphStorage, le_int32 &currGlyph, EntryTableIndex2 index, LEErrorCode &success)
+{
+ const LigatureSubstitutionStateEntry2 *entry = entryTable.getAlias(index, success);
+ if(LE_FAILURE(success)) return 0;
+
+ le_uint16 nextStateIndex = SWAPW(entry->nextStateIndex);
+ le_uint16 flags = SWAPW(entry->entryFlags);
+ le_uint16 ligActionIndex = SWAPW(entry->ligActionIndex);
+
+ if (flags & lsfSetComponent) {
+ if (++m >= nComponents) {
+ m = 0;
+ }
+ componentStack[m] = currGlyph;
+ } else if ( m == -1) {
+ // bad font- skip this glyph.
+ //LE_DEBUG_BAD_FONT("m==-1 (componentCount went negative)")
+ currGlyph+= dir;
+ return nextStateIndex;
+ }
+
+ ByteOffset actionOffset = flags & lsfPerformAction;
+
+ if (actionOffset != 0) {
+ LEReferenceTo<LigatureActionEntry> ap(stHeader, success, ligActionOffset); // byte offset
+ if (LE_FAILURE(success)) {
+ currGlyph+= dir;
+ return nextStateIndex;
+ }
+ ap.addObject(ligActionIndex, success);
+ LEReferenceToArrayOf<TTGlyphID> ligatureTable(stHeader, success, ligatureOffset, LE_UNBOUNDED_ARRAY);
+ LigatureActionEntry action;
+ le_int32 offset, i = 0, j = 0;
+ le_int32 stack[nComponents];
+ le_int16 mm = -1;
+
+ LEReferenceToArrayOf<le_uint16> componentTable(stHeader, success, componentOffset, LE_UNBOUNDED_ARRAY);
+ if(LE_FAILURE(success)) {
+ currGlyph+= dir;
+ return nextStateIndex; // get out! bad font
+ }
+
+ do {
+ le_uint32 componentGlyph = componentStack[m--]; // pop off
+
+ if (j++ > 0) {
+ ap.addObject(success);
+ }
+ if (LE_FAILURE(success)) {
+ currGlyph+= dir;
+ return nextStateIndex;
+ }
+
+ action = SWAPL(*ap.getAlias());
+
+ if (m < 0) {
+ m = nComponents - 1;
+ }
+
+ offset = action & lafComponentOffsetMask;
+ if (offset != 0) {
+ if(componentGlyph >= glyphStorage.getGlyphCount()) {
+ LE_DEBUG_BAD_FONT("preposterous componentGlyph");
+ currGlyph+= dir;
+ return nextStateIndex; // get out! bad font
+ }
+ i += SWAPW(componentTable(LE_GET_GLYPH(glyphStorage[componentGlyph]) + (SignExtend(offset, lafComponentOffsetMask)),success));
+ if (LE_FAILURE(success)) {
+ currGlyph+= dir;
+ return nextStateIndex;
+ }
+
+ if (action & (lafLast | lafStore)) {
+ TTGlyphID ligatureGlyph = SWAPW(ligatureTable(i,success));
+ if (LE_FAILURE(success)) {
+ currGlyph+= dir;
+ return nextStateIndex;
+ }
+ glyphStorage[componentGlyph] = LE_SET_GLYPH(glyphStorage[componentGlyph], ligatureGlyph);
+ if(mm==nComponents) {
+ LE_DEBUG_BAD_FONT("exceeded nComponents");
+ mm--; // don't overrun the stack.
+ }
+ stack[++mm] = componentGlyph;
+ i = 0;
+ } else {
+ glyphStorage[componentGlyph] = LE_SET_GLYPH(glyphStorage[componentGlyph], 0xFFFF);
+ }
+ }
+#if LE_ASSERT_BAD_FONT
+ if(m<0) {
+ LE_DEBUG_BAD_FONT("m<0")
+ }
+#endif
+ } while (LE_SUCCESS(success) && !(action & lafLast) && (m>=0) ); // stop if last bit is set, or if run out of items
+
+ while (mm >= 0) {
+ if (++m >= nComponents) {
+ m = 0;
+ }
+
+ componentStack[m] = stack[mm--];
+ }
+ }
+
+ if (!(flags & lsfDontAdvance)) {
+ currGlyph += dir;
+ }
+
+ return nextStateIndex;
+}
+
+void LigatureSubstitutionProcessor2::endStateTable()
+{
+}
+
+U_NAMESPACE_END