--- a/src/java.desktop/share/native/libfontmanager/layout/HangulLayoutEngine.cpp Thu Oct 12 10:40:45 2017 +0530
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,363 +0,0 @@
-/*
- * 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.
- *
- */
-
-/*
- * HangulLayoutEngine.cpp: OpenType processing for Han fonts.
- *
- * (C) Copyright IBM Corp. 1998-2010 - All Rights Reserved.
- */
-
-#include "LETypes.h"
-#include "LEScripts.h"
-#include "LELanguages.h"
-
-#include "LayoutEngine.h"
-#include "OpenTypeLayoutEngine.h"
-#include "HangulLayoutEngine.h"
-#include "ScriptAndLanguageTags.h"
-#include "LEGlyphStorage.h"
-#include "OpenTypeTables.h"
-
-U_NAMESPACE_BEGIN
-
-UOBJECT_DEFINE_RTTI_IMPLEMENTATION(HangulOpenTypeLayoutEngine)
-
-
-#define FEATURE_MAP(name) {name ## FeatureTag, name ## FeatureMask}
-
-#define LJMO_FIRST 0x1100
-#define LJMO_LAST 0x1159
-#define LJMO_FILL 0x115F
-#define LJMO_COUNT 19
-
-#define VJMO_FIRST 0x1161
-#define VJMO_LAST 0x11A2
-#define VJMO_FILL 0x1160
-#define VJMO_COUNT 21
-
-#define TJMO_FIRST 0x11A7
-#define TJMO_LAST 0x11F9
-#define TJMO_COUNT 28
-
-#define HSYL_FIRST 0xAC00
-#define HSYL_COUNT 11172
-#define HSYL_LVCNT (VJMO_COUNT * TJMO_COUNT)
-
-// Character classes
-enum
-{
- CC_L = 0,
- CC_V,
- CC_T,
- CC_LV,
- CC_LVT,
- CC_X,
- CC_COUNT
-};
-
-// Action flags
-#define AF_L 1
-#define AF_V 2
-#define AF_T 4
-
-// Actions
-#define a_N 0
-#define a_L (AF_L)
-#define a_V (AF_V)
-#define a_T (AF_T)
-#define a_VT (AF_V | AF_T)
-#define a_LV (AF_L | AF_V)
-#define a_LVT (AF_L | AF_V | AF_T)
-
-typedef struct
-{
- le_int32 newState;
- le_int32 actionFlags;
-} StateTransition;
-
-static const StateTransition stateTable[][CC_COUNT] =
-{
-// L V T LV LVT X
- { {1, a_L}, {2, a_LV}, {3, a_LVT}, {2, a_LV}, {3, a_LVT}, {4, a_T}}, // 0 - start
- { {1, a_L}, {2, a_V}, {3, a_VT}, {2, a_LV}, {3, a_LVT}, {-1, a_V}}, // 1 - L+
- {{-1, a_N}, {2, a_V}, {3, a_T}, {-1, a_N}, {-1, a_N}, {-1, a_N}}, // 2 - L+V+
- {{-1, a_N}, {-1, a_N}, {3, a_T}, {-1, a_N}, {-1, a_N}, {-1, a_N}}, // 3 - L+V+T*
- {{-1, a_N}, {-1, a_N}, {-1, a_N}, {-1, a_N}, {-1, a_N}, {4, a_T}} // 4 - X+
-};
-
-
-#define ccmpFeatureTag LE_CCMP_FEATURE_TAG
-#define ljmoFeatureTag LE_LJMO_FEATURE_TAG
-#define vjmoFeatureTag LE_VJMO_FEATURE_TAG
-#define tjmoFeatureTag LE_TJMO_FEATURE_TAG
-
-#define ccmpFeatureMask 0x80000000UL
-#define ljmoFeatureMask 0x40000000UL
-#define vjmoFeatureMask 0x20000000UL
-#define tjmoFeatureMask 0x10000000UL
-
-static const FeatureMap featureMap[] =
-{
- {ccmpFeatureTag, ccmpFeatureMask},
- {ljmoFeatureTag, ljmoFeatureMask},
- {vjmoFeatureTag, vjmoFeatureMask},
- {tjmoFeatureTag, tjmoFeatureMask}
-};
-
-static const le_int32 featureMapCount = LE_ARRAY_SIZE(featureMap);
-
-#define nullFeatures 0
-#define ljmoFeatures (ccmpFeatureMask | ljmoFeatureMask)
-#define vjmoFeatures (ccmpFeatureMask | vjmoFeatureMask | ljmoFeatureMask | tjmoFeatureMask)
-#define tjmoFeatures (ccmpFeatureMask | tjmoFeatureMask | ljmoFeatureMask | vjmoFeatureMask)
-
-static le_int32 compose(LEUnicode lead, LEUnicode vowel, LEUnicode trail, LEUnicode &syllable)
-{
- le_int32 lIndex = lead - LJMO_FIRST;
- le_int32 vIndex = vowel - VJMO_FIRST;
- le_int32 tIndex = trail - TJMO_FIRST;
- le_int32 result = 3;
-
- if ((lIndex < 0 || lIndex >= LJMO_COUNT ) || (vIndex < 0 || vIndex >= VJMO_COUNT)) {
- return 0;
- }
-
- if (tIndex <= 0 || tIndex >= TJMO_COUNT) {
- tIndex = 0;
- result = 2;
- }
-
- syllable = (LEUnicode) ((lIndex * VJMO_COUNT + vIndex) * TJMO_COUNT + tIndex + HSYL_FIRST);
-
- return result;
-}
-
-static le_int32 decompose(LEUnicode syllable, LEUnicode &lead, LEUnicode &vowel, LEUnicode &trail)
-{
- le_int32 sIndex = syllable - HSYL_FIRST;
-
- if (sIndex < 0 || sIndex >= HSYL_COUNT) {
- return 0;
- }
-
- lead = (LEUnicode)(LJMO_FIRST + (sIndex / HSYL_LVCNT));
- vowel = VJMO_FIRST + (sIndex % HSYL_LVCNT) / TJMO_COUNT;
- trail = TJMO_FIRST + (sIndex % TJMO_COUNT);
-
- if (trail == TJMO_FIRST) {
- return 2;
- }
-
- return 3;
-}
-
-static le_int32 getCharClass(LEUnicode ch, LEUnicode &lead, LEUnicode &vowel, LEUnicode &trail)
-{
- lead = LJMO_FILL;
- vowel = VJMO_FILL;
- trail = TJMO_FIRST;
-
- if (ch >= LJMO_FIRST && ch <= LJMO_LAST) {
- lead = ch;
- return CC_L;
- }
-
- if (ch >= VJMO_FIRST && ch <= VJMO_LAST) {
- vowel = ch;
- return CC_V;
- }
-
- if (ch > TJMO_FIRST && ch <= TJMO_LAST) {
- trail = ch;
- return CC_T;
- }
-
- le_int32 c = decompose(ch, lead, vowel, trail);
-
- if (c == 2) {
- return CC_LV;
- }
-
- if (c == 3) {
- return CC_LVT;
- }
-
- trail = ch;
- return CC_X;
-}
-
-HangulOpenTypeLayoutEngine::HangulOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 /*languageCode*/,
- le_int32 typoFlags, const LEReferenceTo<GlyphSubstitutionTableHeader> &gsubTable, LEErrorCode &success)
- : OpenTypeLayoutEngine(fontInstance, scriptCode, korLanguageCode, typoFlags, gsubTable, success)
-{
- fFeatureMap = featureMap;
- fFeatureMapCount = featureMapCount;
- fFeatureOrder = TRUE;
-}
-
-HangulOpenTypeLayoutEngine::HangulOpenTypeLayoutEngine(const LEFontInstance *fontInstance, le_int32 scriptCode, le_int32 /*languageCode*/,
- le_int32 typoFlags, LEErrorCode &success)
- : OpenTypeLayoutEngine(fontInstance, scriptCode, korLanguageCode, typoFlags, success)
-{
- fFeatureMap = featureMap;
- fFeatureMapCount = featureMapCount;
- fFeatureOrder = TRUE;
-}
-
-HangulOpenTypeLayoutEngine::~HangulOpenTypeLayoutEngine()
-{
- // nothing to do
-}
-
-le_int32 HangulOpenTypeLayoutEngine::characterProcessing(const LEUnicode chars[], le_int32 offset, le_int32 count, le_int32 max, le_bool rightToLeft,
- LEUnicode *&outChars, LEGlyphStorage &glyphStorage, LEErrorCode &success)
-{
- if (LE_FAILURE(success)) {
- return 0;
- }
-
- if (chars == NULL || offset < 0 || count < 0 || max < 0 || offset >= max || offset + count > max) {
- success = LE_ILLEGAL_ARGUMENT_ERROR;
- return 0;
- }
-
- le_int32 worstCase = count * 3;
-
- outChars = LE_NEW_ARRAY(LEUnicode, worstCase);
-
- if (outChars == NULL) {
- success = LE_MEMORY_ALLOCATION_ERROR;
- return 0;
- }
-
- glyphStorage.allocateGlyphArray(worstCase, rightToLeft, success);
- glyphStorage.allocateAuxData(success);
-
- if (LE_FAILURE(success)) {
- LE_DELETE_ARRAY(outChars);
- return 0;
- }
-
- le_int32 outCharCount = 0;
- le_int32 limit = offset + count;
- le_int32 i = offset;
-
- while (i < limit) {
- le_int32 state = 0;
- le_int32 inStart = i;
- le_int32 outStart = outCharCount;
-
- while( i < limit) {
- LEUnicode lead = 0;
- LEUnicode vowel = 0;
- LEUnicode trail = 0;
- le_int32 chClass = getCharClass(chars[i], lead, vowel, trail);
- const StateTransition transition = stateTable[state][chClass];
-
- if (chClass == CC_X) {
- /* Any character of type X will be stored as a trail jamo */
- if ((transition.actionFlags & AF_T) != 0) {
- outChars[outCharCount] = trail;
- glyphStorage.setCharIndex(outCharCount, i-offset, success);
- glyphStorage.setAuxData(outCharCount++, nullFeatures, success);
- }
- } else {
- /* Any Hangul will be fully decomposed. Output the decomposed characters. */
- if ((transition.actionFlags & AF_L) != 0) {
- outChars[outCharCount] = lead;
- glyphStorage.setCharIndex(outCharCount, i-offset, success);
- glyphStorage.setAuxData(outCharCount++, ljmoFeatures, success);
- }
-
- if ((transition.actionFlags & AF_V) != 0) {
- outChars[outCharCount] = vowel;
- glyphStorage.setCharIndex(outCharCount, i-offset, success);
- glyphStorage.setAuxData(outCharCount++, vjmoFeatures, success);
- }
-
- if ((transition.actionFlags & AF_T) != 0) {
- outChars[outCharCount] = trail;
- glyphStorage.setCharIndex(outCharCount, i-offset, success);
- glyphStorage.setAuxData(outCharCount++, tjmoFeatures, success);
- }
- }
-
- state = transition.newState;
-
- /* Negative next state means stop. */
- if (state < 0) {
- break;
- }
-
- i += 1;
- }
-
- le_int32 inLength = i - inStart;
- le_int32 outLength = outCharCount - outStart;
-
- /*
- * See if the syllable can be composed into a single character. There are 5
- * possible cases:
- *
- * Input Decomposed to Compose to
- * LV L, V LV
- * LVT L, V, T LVT
- * L, V L, V LV, DEL
- * LV, T L, V, T LVT, DEL
- * L, V, T L, V, T LVT, DEL, DEL
- */
- if ((inLength >= 1 && inLength <= 3) && (outLength == 2 || outLength == 3)) {
- LEUnicode syllable = 0x0000;
- LEUnicode lead = outChars[outStart];
- LEUnicode vowel = outChars[outStart + 1];
- LEUnicode trail = outLength == 3? outChars[outStart + 2] : TJMO_FIRST;
-
- /*
- * If the composition consumes the whole decomposed syllable,
- * we can use it.
- */
- if (compose(lead, vowel, trail, syllable) == outLength) {
- outCharCount = outStart;
- outChars[outCharCount] = syllable;
- glyphStorage.setCharIndex(outCharCount, inStart-offset, success);
- glyphStorage.setAuxData(outCharCount++, nullFeatures, success);
-
- /*
- * Replace the rest of the input characters with DEL.
- */
- for(le_int32 d = inStart + 1; d < i; d += 1) {
- outChars[outCharCount] = 0xFFFF;
- glyphStorage.setCharIndex(outCharCount, d - offset, success);
- glyphStorage.setAuxData(outCharCount++, nullFeatures, success);
- }
- }
- }
- }
-
- glyphStorage.adoptGlyphCount(outCharCount);
- return outCharCount;
-}
-
-U_NAMESPACE_END