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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.complexscripts.fonts;
-
- import java.io.IOException;
- import java.util.Arrays;
- import java.util.Iterator;
- import java.util.List;
- import java.util.Map;
-
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
-
- import org.apache.fop.fonts.truetype.FontFileReader;
- import org.apache.fop.fonts.truetype.TTFDirTabEntry;
- import org.apache.fop.fonts.truetype.TTFFile;
- import org.apache.fop.fonts.truetype.TTFTableName;
-
- // CSOFF: AvoidNestedBlocksCheck
- // CSOFF: NoWhitespaceAfterCheck
- // CSOFF: InnerAssignmentCheck
- // CSOFF: SimplifyBooleanReturnCheck
- // CSOFF: LineLengthCheck
-
- /**
- * <p>OpenType Font (OTF) advanced typographic table reader. Used by @{Link org.apache.fop.fonts.truetype.TTFFile}
- * to read advanced typographic tables (GDEF, GSUB, GPOS).</p>
- *
- * <p>This work was originally authored by Glenn Adams (gadams@apache.org).</p>
- */
- public final class OTFAdvancedTypographicTableReader {
-
- // logging state
- private static Log log = LogFactory.getLog(OTFAdvancedTypographicTableReader.class);
- // instance state
- private TTFFile ttf; // parent font file reader
- private FontFileReader in; // input reader
- private GlyphDefinitionTable gdef; // glyph definition table
- private GlyphSubstitutionTable gsub; // glyph substitution table
- private GlyphPositioningTable gpos; // glyph positioning table
- // transient parsing state
- private transient Map/*<String,Object[3]>*/ seScripts; // script-tag => Object[3] : { default-language-tag, List(language-tag), seLanguages }
- private transient Map/*<String,Object[2]>*/ seLanguages; // language-tag => Object[2] : { "f<required-feature-index>", List("f<feature-index>")
- private transient Map/*<String,List<String>>*/ seFeatures; // "f<feature-index>" => Object[2] : { feature-tag, List("lu<lookup-index>") }
- private transient GlyphMappingTable seMapping; // subtable entry mappings
- private transient List seEntries; // subtable entry entries
- private transient List seSubtables; // subtable entry subtables
-
- /**
- * Construct an <code>OTFAdvancedTypographicTableReader</code> instance.
- * @param ttf parent font file reader (must be non-null)
- * @param in font file reader (must be non-null)
- */
- public OTFAdvancedTypographicTableReader ( TTFFile ttf, FontFileReader in ) {
- assert ttf != null;
- assert in != null;
- this.ttf = ttf;
- this.in = in;
- }
-
- /**
- * Read all advanced typographic tables.
- * @throws AdvancedTypographicTableFormatException if ATT table has invalid format
- */
- public void readAll() throws AdvancedTypographicTableFormatException {
- try {
- readGDEF();
- readGSUB();
- readGPOS();
- } catch ( AdvancedTypographicTableFormatException e ) {
- resetATStateAll();
- throw e;
- } catch ( IOException e ) {
- resetATStateAll();
- throw new AdvancedTypographicTableFormatException ( e.getMessage(), e );
- } finally {
- resetATState();
- }
- }
-
- /**
- * Determine if advanced (typographic) table is present.
- * @return true if advanced (typographic) table is present
- */
- public boolean hasAdvancedTable() {
- return ( gdef != null ) || ( gsub != null ) || ( gpos != null );
- }
-
- /**
- * Returns the GDEF table or null if none present.
- * @return the GDEF table
- */
- public GlyphDefinitionTable getGDEF() {
- return gdef;
- }
-
- /**
- * Returns the GSUB table or null if none present.
- * @return the GSUB table
- */
- public GlyphSubstitutionTable getGSUB() {
- return gsub;
- }
-
- /**
- * Returns the GPOS table or null if none present.
- * @return the GPOS table
- */
- public GlyphPositioningTable getGPOS() {
- return gpos;
- }
-
- private void readLangSysTable(TTFTableName tableTag, long langSysTable, String langSysTag) throws IOException {
- in.seekSet(langSysTable);
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " lang sys table: " + langSysTag );
- }
- // read lookup order (reorder) table offset
- int lo = in.readTTFUShort();
- // read required feature index
- int rf = in.readTTFUShort();
- String rfi;
- if ( rf != 65535 ) {
- rfi = "f" + rf;
- } else {
- rfi = null;
- }
- // read (non-required) feature count
- int nf = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " lang sys table reorder table: " + lo );
- log.debug(tableTag + " lang sys table required feature index: " + rf );
- log.debug(tableTag + " lang sys table non-required feature count: " + nf );
- }
- // read (non-required) feature indices
- int[] fia = new int[nf];
- List fl = new java.util.ArrayList();
- for ( int i = 0; i < nf; i++ ) {
- int fi = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " lang sys table non-required feature index: " + fi );
- }
- fia[i] = fi;
- fl.add ( "f" + fi );
- }
- if ( seLanguages == null ) {
- seLanguages = new java.util.LinkedHashMap();
- }
- seLanguages.put ( langSysTag, new Object[] { rfi, fl } );
- }
-
- private static String defaultTag = "dflt";
-
- private void readScriptTable(TTFTableName tableTag, long scriptTable, String scriptTag) throws IOException {
- in.seekSet(scriptTable);
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " script table: " + scriptTag );
- }
- // read default language system table offset
- int dl = in.readTTFUShort();
- String dt = defaultTag;
- if ( dl > 0 ) {
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " default lang sys tag: " + dt );
- log.debug(tableTag + " default lang sys table offset: " + dl );
- }
- }
- // read language system record count
- int nl = in.readTTFUShort();
- List ll = new java.util.ArrayList();
- if ( nl > 0 ) {
- String[] lta = new String[nl];
- int[] loa = new int[nl];
- // read language system records
- for ( int i = 0, n = nl; i < n; i++ ) {
- String lt = in.readTTFString(4);
- int lo = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " lang sys tag: " + lt );
- log.debug(tableTag + " lang sys table offset: " + lo );
- }
- lta[i] = lt;
- loa[i] = lo;
- if ( dl == lo ) {
- dl = 0;
- dt = lt;
- }
- ll.add ( lt );
- }
- // read non-default language system tables
- for ( int i = 0, n = nl; i < n; i++ ) {
- readLangSysTable ( tableTag, scriptTable + loa [ i ], lta [ i ] );
- }
- }
- // read default language system table (if specified)
- if ( dl > 0 ) {
- readLangSysTable ( tableTag, scriptTable + dl, dt );
- } else if ( dt != null ) {
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " lang sys default: " + dt );
- }
- }
- seScripts.put ( scriptTag, new Object[] { dt, ll, seLanguages } );
- seLanguages = null;
- }
-
- private void readScriptList(TTFTableName tableTag, long scriptList) throws IOException {
- in.seekSet(scriptList);
- // read script record count
- int ns = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " script list record count: " + ns );
- }
- if ( ns > 0 ) {
- String[] sta = new String[ns];
- int[] soa = new int[ns];
- // read script records
- for ( int i = 0, n = ns; i < n; i++ ) {
- String st = in.readTTFString(4);
- int so = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " script tag: " + st );
- log.debug(tableTag + " script table offset: " + so );
- }
- sta[i] = st;
- soa[i] = so;
- }
- // read script tables
- for ( int i = 0, n = ns; i < n; i++ ) {
- seLanguages = null;
- readScriptTable ( tableTag, scriptList + soa [ i ], sta [ i ] );
- }
- }
- }
-
- private void readFeatureTable(TTFTableName tableTag, long featureTable, String featureTag, int featureIndex) throws IOException {
- in.seekSet(featureTable);
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " feature table: " + featureTag );
- }
- // read feature params offset
- int po = in.readTTFUShort();
- // read lookup list indices count
- int nl = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " feature table parameters offset: " + po );
- log.debug(tableTag + " feature table lookup list index count: " + nl );
- }
- // read lookup table indices
- int[] lia = new int[nl];
- List lul = new java.util.ArrayList();
- for ( int i = 0; i < nl; i++ ) {
- int li = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " feature table lookup index: " + li );
- }
- lia[i] = li;
- lul.add ( "lu" + li );
- }
- seFeatures.put ( "f" + featureIndex, new Object[] { featureTag, lul } );
- }
-
- private void readFeatureList(TTFTableName tableTag, long featureList) throws IOException {
- in.seekSet(featureList);
- // read feature record count
- int nf = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " feature list record count: " + nf );
- }
- if ( nf > 0 ) {
- String[] fta = new String[nf];
- int[] foa = new int[nf];
- // read feature records
- for ( int i = 0, n = nf; i < n; i++ ) {
- String ft = in.readTTFString(4);
- int fo = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " feature tag: " + ft );
- log.debug(tableTag + " feature table offset: " + fo );
- }
- fta[i] = ft;
- foa[i] = fo;
- }
- // read feature tables
- for ( int i = 0, n = nf; i < n; i++ ) {
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " feature index: " + i );
- }
- readFeatureTable ( tableTag, featureList + foa [ i ], fta [ i ], i );
- }
- }
- }
-
- static final class GDEFLookupType {
- static final int GLYPH_CLASS = 1;
- static final int ATTACHMENT_POINT = 2;
- static final int LIGATURE_CARET = 3;
- static final int MARK_ATTACHMENT = 4;
- private GDEFLookupType() {
- }
- public static int getSubtableType ( int lt ) {
- int st;
- switch ( lt ) {
- case GDEFLookupType.GLYPH_CLASS:
- st = GlyphDefinitionTable.GDEF_LOOKUP_TYPE_GLYPH_CLASS;
- break;
- case GDEFLookupType.ATTACHMENT_POINT:
- st = GlyphDefinitionTable.GDEF_LOOKUP_TYPE_ATTACHMENT_POINT;
- break;
- case GDEFLookupType.LIGATURE_CARET:
- st = GlyphDefinitionTable.GDEF_LOOKUP_TYPE_LIGATURE_CARET;
- break;
- case GDEFLookupType.MARK_ATTACHMENT:
- st = GlyphDefinitionTable.GDEF_LOOKUP_TYPE_MARK_ATTACHMENT;
- break;
- default:
- st = -1;
- break;
- }
- return st;
- }
- public static String toString(int type) {
- String s;
- switch ( type ) {
- case GLYPH_CLASS:
- s = "GlyphClass";
- break;
- case ATTACHMENT_POINT:
- s = "AttachmentPoint";
- break;
- case LIGATURE_CARET:
- s = "LigatureCaret";
- break;
- case MARK_ATTACHMENT:
- s = "MarkAttachment";
- break;
- default:
- s = "?";
- break;
- }
- return s;
- }
- }
-
- static final class GSUBLookupType {
- static final int SINGLE = 1;
- static final int MULTIPLE = 2;
- static final int ALTERNATE = 3;
- static final int LIGATURE = 4;
- static final int CONTEXTUAL = 5;
- static final int CHAINED_CONTEXTUAL = 6;
- static final int EXTENSION = 7;
- static final int REVERSE_CHAINED_SINGLE = 8;
- private GSUBLookupType() {
- }
- public static int getSubtableType ( int lt ) {
- int st;
- switch ( lt ) {
- case GSUBLookupType.SINGLE:
- st = GlyphSubstitutionTable.GSUB_LOOKUP_TYPE_SINGLE;
- break;
- case GSUBLookupType.MULTIPLE:
- st = GlyphSubstitutionTable.GSUB_LOOKUP_TYPE_MULTIPLE;
- break;
- case GSUBLookupType.ALTERNATE:
- st = GlyphSubstitutionTable.GSUB_LOOKUP_TYPE_ALTERNATE;
- break;
- case GSUBLookupType.LIGATURE:
- st = GlyphSubstitutionTable.GSUB_LOOKUP_TYPE_LIGATURE;
- break;
- case GSUBLookupType.CONTEXTUAL:
- st = GlyphSubstitutionTable.GSUB_LOOKUP_TYPE_CONTEXTUAL;
- break;
- case GSUBLookupType.CHAINED_CONTEXTUAL:
- st = GlyphSubstitutionTable.GSUB_LOOKUP_TYPE_CHAINED_CONTEXTUAL;
- break;
- case GSUBLookupType.EXTENSION:
- st = GlyphSubstitutionTable.GSUB_LOOKUP_TYPE_EXTENSION_SUBSTITUTION;
- break;
- case GSUBLookupType.REVERSE_CHAINED_SINGLE:
- st = GlyphSubstitutionTable.GSUB_LOOKUP_TYPE_REVERSE_CHAINED_SINGLE;
- break;
- default:
- st = -1;
- break;
- }
- return st;
- }
- public static String toString(int type) {
- String s;
- switch ( type ) {
- case SINGLE:
- s = "Single";
- break;
- case MULTIPLE:
- s = "Multiple";
- break;
- case ALTERNATE:
- s = "Alternate";
- break;
- case LIGATURE:
- s = "Ligature";
- break;
- case CONTEXTUAL:
- s = "Contextual";
- break;
- case CHAINED_CONTEXTUAL:
- s = "ChainedContextual";
- break;
- case EXTENSION:
- s = "Extension";
- break;
- case REVERSE_CHAINED_SINGLE:
- s = "ReverseChainedSingle";
- break;
- default:
- s = "?";
- break;
- }
- return s;
- }
- }
-
- static final class GPOSLookupType {
- static final int SINGLE = 1;
- static final int PAIR = 2;
- static final int CURSIVE = 3;
- static final int MARK_TO_BASE = 4;
- static final int MARK_TO_LIGATURE = 5;
- static final int MARK_TO_MARK = 6;
- static final int CONTEXTUAL = 7;
- static final int CHAINED_CONTEXTUAL = 8;
- static final int EXTENSION = 9;
- private GPOSLookupType() {
- }
- public static String toString(int type) {
- String s;
- switch ( type ) {
- case SINGLE:
- s = "Single";
- break;
- case PAIR:
- s = "Pair";
- break;
- case CURSIVE:
- s = "Cursive";
- break;
- case MARK_TO_BASE:
- s = "MarkToBase";
- break;
- case MARK_TO_LIGATURE:
- s = "MarkToLigature";
- break;
- case MARK_TO_MARK:
- s = "MarkToMark";
- break;
- case CONTEXTUAL:
- s = "Contextual";
- break;
- case CHAINED_CONTEXTUAL:
- s = "ChainedContextual";
- break;
- case EXTENSION:
- s = "Extension";
- break;
- default:
- s = "?";
- break;
- }
- return s;
- }
- }
-
- static final class LookupFlag {
- static final int RIGHT_TO_LEFT = 0x0001;
- static final int IGNORE_BASE_GLYPHS = 0x0002;
- static final int IGNORE_LIGATURE = 0x0004;
- static final int IGNORE_MARKS = 0x0008;
- static final int USE_MARK_FILTERING_SET = 0x0010;
- static final int MARK_ATTACHMENT_TYPE = 0xFF00;
- private LookupFlag() {
- }
- public static String toString(int flags) {
- StringBuffer sb = new StringBuffer();
- boolean first = true;
- if ( ( flags & RIGHT_TO_LEFT ) != 0 ) {
- if ( first ) {
- first = false;
- } else {
- sb.append ( '|' );
- }
- sb.append ( "RightToLeft" );
- }
- if ( ( flags & IGNORE_BASE_GLYPHS ) != 0 ) {
- if ( first ) {
- first = false;
- } else {
- sb.append ( '|' );
- }
- sb.append ( "IgnoreBaseGlyphs" );
- }
- if ( ( flags & IGNORE_LIGATURE ) != 0 ) {
- if ( first ) {
- first = false;
- } else {
- sb.append ( '|' );
- }
- sb.append ( "IgnoreLigature" );
- }
- if ( ( flags & IGNORE_MARKS ) != 0 ) {
- if ( first ) {
- first = false;
- } else {
- sb.append ( '|' );
- }
- sb.append ( "IgnoreMarks" );
- }
- if ( ( flags & USE_MARK_FILTERING_SET ) != 0 ) {
- if ( first ) {
- first = false;
- } else {
- sb.append ( '|' );
- }
- sb.append ( "UseMarkFilteringSet" );
- }
- if ( sb.length() == 0 ) {
- sb.append ( '-' );
- }
- return sb.toString();
- }
- }
-
- private GlyphCoverageTable readCoverageTableFormat1(String label, long tableOffset, int coverageFormat) throws IOException {
- List entries = new java.util.ArrayList();
- in.seekSet(tableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read glyph count
- int ng = in.readTTFUShort();
- int[] ga = new int[ng];
- for ( int i = 0, n = ng; i < n; i++ ) {
- int g = in.readTTFUShort();
- ga[i] = g;
- entries.add ( Integer.valueOf(g) );
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(label + " glyphs: " + toString(ga) );
- }
- return GlyphCoverageTable.createCoverageTable ( entries );
- }
-
- private GlyphCoverageTable readCoverageTableFormat2(String label, long tableOffset, int coverageFormat) throws IOException {
- List entries = new java.util.ArrayList();
- in.seekSet(tableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read range record count
- int nr = in.readTTFUShort();
- for ( int i = 0, n = nr; i < n; i++ ) {
- // read range start
- int s = in.readTTFUShort();
- // read range end
- int e = in.readTTFUShort();
- // read range coverage (mapping) index
- int m = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(label + " range[" + i + "]: [" + s + "," + e + "]: " + m );
- }
- entries.add ( new GlyphCoverageTable.MappingRange ( s, e, m ) );
- }
- return GlyphCoverageTable.createCoverageTable ( entries );
- }
-
- private GlyphCoverageTable readCoverageTable(String label, long tableOffset) throws IOException {
- GlyphCoverageTable gct;
- long cp = in.getCurrentPos();
- in.seekSet(tableOffset);
- // read coverage table format
- int cf = in.readTTFUShort();
- if ( cf == 1 ) {
- gct = readCoverageTableFormat1 ( label, tableOffset, cf );
- } else if ( cf == 2 ) {
- gct = readCoverageTableFormat2 ( label, tableOffset, cf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported coverage table format: " + cf );
- }
- in.seekSet ( cp );
- return gct;
- }
-
- private GlyphClassTable readClassDefTableFormat1(String label, long tableOffset, int classFormat) throws IOException {
- List entries = new java.util.ArrayList();
- in.seekSet(tableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read start glyph
- int sg = in.readTTFUShort();
- entries.add ( Integer.valueOf(sg) );
- // read glyph count
- int ng = in.readTTFUShort();
- // read glyph classes
- int[] ca = new int[ng];
- for ( int i = 0, n = ng; i < n; i++ ) {
- int gc = in.readTTFUShort();
- ca[i] = gc;
- entries.add ( Integer.valueOf(gc) );
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(label + " glyph classes: " + toString(ca) );
- }
- return GlyphClassTable.createClassTable ( entries );
- }
-
- private GlyphClassTable readClassDefTableFormat2(String label, long tableOffset, int classFormat) throws IOException {
- List entries = new java.util.ArrayList();
- in.seekSet(tableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read range record count
- int nr = in.readTTFUShort();
- for ( int i = 0, n = nr; i < n; i++ ) {
- // read range start
- int s = in.readTTFUShort();
- // read range end
- int e = in.readTTFUShort();
- // read range glyph class (mapping) index
- int m = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(label + " range[" + i + "]: [" + s + "," + e + "]: " + m );
- }
- entries.add ( new GlyphClassTable.MappingRange ( s, e, m ) );
- }
- return GlyphClassTable.createClassTable ( entries );
- }
-
- private GlyphClassTable readClassDefTable(String label, long tableOffset) throws IOException {
- GlyphClassTable gct;
- long cp = in.getCurrentPos();
- in.seekSet(tableOffset);
- // read class table format
- int cf = in.readTTFUShort();
- if ( cf == 1 ) {
- gct = readClassDefTableFormat1 ( label, tableOffset, cf );
- } else if ( cf == 2 ) {
- gct = readClassDefTableFormat2 ( label, tableOffset, cf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported class definition table format: " + cf );
- }
- in.seekSet ( cp );
- return gct;
- }
-
- private void readSingleSubTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read delta glyph
- int dg = in.readTTFShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " single substitution subtable format: " + subtableFormat + " (delta)" );
- log.debug(tableTag + " single substitution coverage table offset: " + co );
- log.debug(tableTag + " single substitution delta: " + dg );
- }
- // read coverage table
- seMapping = readCoverageTable ( tableTag + " single substitution coverage", subtableOffset + co );
- seEntries.add ( Integer.valueOf ( dg ) );
- }
-
- private void readSingleSubTableFormat2(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read glyph count
- int ng = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " single substitution subtable format: " + subtableFormat + " (mapped)" );
- log.debug(tableTag + " single substitution coverage table offset: " + co );
- log.debug(tableTag + " single substitution glyph count: " + ng );
- }
- // read coverage table
- seMapping = readCoverageTable ( tableTag + " single substitution coverage", subtableOffset + co );
- // read glyph substitutions
- int[] gsa = new int[ng];
- for ( int i = 0, n = ng; i < n; i++ ) {
- int gs = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " single substitution glyph[" + i + "]: " + gs );
- }
- gsa[i] = gs;
- seEntries.add ( Integer.valueOf ( gs ) );
- }
- }
-
- private int readSingleSubTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read substitution subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readSingleSubTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 2 ) {
- readSingleSubTableFormat2 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported single substitution subtable format: " + sf );
- }
- return sf;
- }
-
- private void readMultipleSubTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read sequence count
- int ns = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " multiple substitution subtable format: " + subtableFormat + " (mapped)" );
- log.debug(tableTag + " multiple substitution coverage table offset: " + co );
- log.debug(tableTag + " multiple substitution sequence count: " + ns );
- }
- // read coverage table
- seMapping = readCoverageTable ( tableTag + " multiple substitution coverage", subtableOffset + co );
- // read sequence table offsets
- int[] soa = new int[ns];
- for ( int i = 0, n = ns; i < n; i++ ) {
- soa[i] = in.readTTFUShort();
- }
- // read sequence tables
- int[][] gsa = new int [ ns ] [];
- for ( int i = 0, n = ns; i < n; i++ ) {
- int so = soa[i];
- int[] ga;
- if ( so > 0 ) {
- in.seekSet(subtableOffset + so);
- // read glyph count
- int ng = in.readTTFUShort();
- ga = new int[ng];
- for ( int j = 0; j < ng; j++ ) {
- ga[j] = in.readTTFUShort();
- }
- } else {
- ga = null;
- }
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " multiple substitution sequence[" + i + "]: " + toString ( ga ) );
- }
- gsa [ i ] = ga;
- }
- seEntries.add ( gsa );
- }
-
- private int readMultipleSubTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read substitution subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readMultipleSubTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported multiple substitution subtable format: " + sf );
- }
- return sf;
- }
-
- private void readAlternateSubTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read alternate set count
- int ns = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " alternate substitution subtable format: " + subtableFormat + " (mapped)" );
- log.debug(tableTag + " alternate substitution coverage table offset: " + co );
- log.debug(tableTag + " alternate substitution alternate set count: " + ns );
- }
- // read coverage table
- seMapping = readCoverageTable ( tableTag + " alternate substitution coverage", subtableOffset + co );
- // read alternate set table offsets
- int[] soa = new int[ns];
- for ( int i = 0, n = ns; i < n; i++ ) {
- soa[i] = in.readTTFUShort();
- }
- // read alternate set tables
- for ( int i = 0, n = ns; i < n; i++ ) {
- int so = soa[i];
- in.seekSet(subtableOffset + so);
- // read glyph count
- int ng = in.readTTFUShort();
- int[] ga = new int[ng];
- for ( int j = 0; j < ng; j++ ) {
- int gs = in.readTTFUShort();
- ga[j] = gs;
- }
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " alternate substitution alternate set[" + i + "]: " + toString ( ga ) );
- }
- seEntries.add ( ga );
- }
- }
-
- private int readAlternateSubTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read substitution subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readAlternateSubTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported alternate substitution subtable format: " + sf );
- }
- return sf;
- }
-
- private void readLigatureSubTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read ligature set count
- int ns = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " ligature substitution subtable format: " + subtableFormat + " (mapped)" );
- log.debug(tableTag + " ligature substitution coverage table offset: " + co );
- log.debug(tableTag + " ligature substitution ligature set count: " + ns );
- }
- // read coverage table
- seMapping = readCoverageTable ( tableTag + " ligature substitution coverage", subtableOffset + co );
- // read ligature set table offsets
- int[] soa = new int[ns];
- for ( int i = 0, n = ns; i < n; i++ ) {
- soa[i] = in.readTTFUShort();
- }
- // read ligature set tables
- for ( int i = 0, n = ns; i < n; i++ ) {
- int so = soa[i];
- in.seekSet(subtableOffset + so);
- // read ligature table count
- int nl = in.readTTFUShort();
- int[] loa = new int[nl];
- for ( int j = 0; j < nl; j++ ) {
- loa[j] = in.readTTFUShort();
- }
- List ligs = new java.util.ArrayList();
- for ( int j = 0; j < nl; j++ ) {
- int lo = loa[j];
- in.seekSet(subtableOffset + so + lo);
- // read ligature glyph id
- int lg = in.readTTFUShort();
- // read ligature (input) component count
- int nc = in.readTTFUShort();
- int[] ca = new int [ nc - 1 ];
- // read ligature (input) component glyph ids
- for ( int k = 0; k < nc - 1; k++ ) {
- ca[k] = in.readTTFUShort();
- }
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " ligature substitution ligature set[" + i + "]: ligature(" + lg + "), components: " + toString ( ca ) );
- }
- ligs.add ( new GlyphSubstitutionTable.Ligature ( lg, ca ) );
- }
- seEntries.add ( new GlyphSubstitutionTable.LigatureSet ( ligs ) );
- }
- }
-
- private int readLigatureSubTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read substitution subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readLigatureSubTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported ligature substitution subtable format: " + sf );
- }
- return sf;
- }
-
- private GlyphTable.RuleLookup[] readRuleLookups(int numLookups, String header) throws IOException {
- GlyphTable.RuleLookup[] la = new GlyphTable.RuleLookup [ numLookups ];
- for ( int i = 0, n = numLookups; i < n; i++ ) {
- int sequenceIndex = in.readTTFUShort();
- int lookupIndex = in.readTTFUShort();
- la [ i ] = new GlyphTable.RuleLookup ( sequenceIndex, lookupIndex );
- // dump info if debugging and header is non-null
- if ( log.isDebugEnabled() && ( header != null ) ) {
- log.debug(header + "lookup[" + i + "]: " + la[i]);
- }
- }
- return la;
- }
-
- private void readContextualSubTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read rule set count
- int nrs = in.readTTFUShort();
- // read rule set offsets
- int[] rsoa = new int [ nrs ];
- for ( int i = 0; i < nrs; i++ ) {
- rsoa [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " contextual substitution format: " + subtableFormat + " (glyphs)" );
- log.debug(tableTag + " contextual substitution coverage table offset: " + co );
- log.debug(tableTag + " contextual substitution rule set count: " + nrs );
- for ( int i = 0; i < nrs; i++ ) {
- log.debug(tableTag + " contextual substitution rule set offset[" + i + "]: " + rsoa[i] );
- }
- }
- // read coverage table
- GlyphCoverageTable ct;
- if ( co > 0 ) {
- ct = readCoverageTable ( tableTag + " contextual substitution coverage", subtableOffset + co );
- } else {
- ct = null;
- }
- // read rule sets
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet [ nrs ];
- String header = null;
- for ( int i = 0; i < nrs; i++ ) {
- GlyphTable.RuleSet rs;
- int rso = rsoa [ i ];
- if ( rso > 0 ) {
- // seek to rule set [ i ]
- in.seekSet ( subtableOffset + rso );
- // read rule count
- int nr = in.readTTFUShort();
- // read rule offsets
- int[] roa = new int [ nr ];
- GlyphTable.Rule[] ra = new GlyphTable.Rule [ nr ];
- for ( int j = 0; j < nr; j++ ) {
- roa [ j ] = in.readTTFUShort();
- }
- // read glyph sequence rules
- for ( int j = 0; j < nr; j++ ) {
- GlyphTable.GlyphSequenceRule r;
- int ro = roa [ j ];
- if ( ro > 0 ) {
- // seek to rule [ j ]
- in.seekSet ( subtableOffset + rso + ro );
- // read glyph count
- int ng = in.readTTFUShort();
- // read rule lookup count
- int nl = in.readTTFUShort();
- // read glyphs
- int[] glyphs = new int [ ng - 1 ];
- for ( int k = 0, nk = glyphs.length; k < nk; k++ ) {
- glyphs [ k ] = in.readTTFUShort();
- }
- // read rule lookups
- if (log.isDebugEnabled()) {
- header = tableTag + " contextual substitution lookups @rule[" + i + "][" + j + "]: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- r = new GlyphTable.GlyphSequenceRule ( lookups, ng, glyphs );
- } else {
- r = null;
- }
- ra [ j ] = r;
- }
- rs = new GlyphTable.HomogeneousRuleSet ( ra );
- } else {
- rs = null;
- }
- rsa [ i ] = rs;
- }
- // store results
- seMapping = ct;
- seEntries.add ( rsa );
- }
-
- private void readContextualSubTableFormat2(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read class def table offset
- int cdo = in.readTTFUShort();
- // read class rule set count
- int ngc = in.readTTFUShort();
- // read class rule set offsets
- int[] csoa = new int [ ngc ];
- for ( int i = 0; i < ngc; i++ ) {
- csoa [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " contextual substitution format: " + subtableFormat + " (glyph classes)" );
- log.debug(tableTag + " contextual substitution coverage table offset: " + co );
- log.debug(tableTag + " contextual substitution class set count: " + ngc );
- for ( int i = 0; i < ngc; i++ ) {
- log.debug(tableTag + " contextual substitution class set offset[" + i + "]: " + csoa[i] );
- }
- }
- // read coverage table
- GlyphCoverageTable ct;
- if ( co > 0 ) {
- ct = readCoverageTable ( tableTag + " contextual substitution coverage", subtableOffset + co );
- } else {
- ct = null;
- }
- // read class definition table
- GlyphClassTable cdt;
- if ( cdo > 0 ) {
- cdt = readClassDefTable ( tableTag + " contextual substitution class definition", subtableOffset + cdo );
- } else {
- cdt = null;
- }
- // read rule sets
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet [ ngc ];
- String header = null;
- for ( int i = 0; i < ngc; i++ ) {
- int cso = csoa [ i ];
- GlyphTable.RuleSet rs;
- if ( cso > 0 ) {
- // seek to rule set [ i ]
- in.seekSet ( subtableOffset + cso );
- // read rule count
- int nr = in.readTTFUShort();
- // read rule offsets
- int[] roa = new int [ nr ];
- GlyphTable.Rule[] ra = new GlyphTable.Rule [ nr ];
- for ( int j = 0; j < nr; j++ ) {
- roa [ j ] = in.readTTFUShort();
- }
- // read glyph sequence rules
- for ( int j = 0; j < nr; j++ ) {
- int ro = roa [ j ];
- GlyphTable.ClassSequenceRule r;
- if ( ro > 0 ) {
- // seek to rule [ j ]
- in.seekSet ( subtableOffset + cso + ro );
- // read glyph count
- int ng = in.readTTFUShort();
- // read rule lookup count
- int nl = in.readTTFUShort();
- // read classes
- int[] classes = new int [ ng - 1 ];
- for ( int k = 0, nk = classes.length; k < nk; k++ ) {
- classes [ k ] = in.readTTFUShort();
- }
- // read rule lookups
- if (log.isDebugEnabled()) {
- header = tableTag + " contextual substitution lookups @rule[" + i + "][" + j + "]: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- r = new GlyphTable.ClassSequenceRule ( lookups, ng, classes );
- } else {
- assert ro > 0 : "unexpected null subclass rule offset";
- r = null;
- }
- ra [ j ] = r;
- }
- rs = new GlyphTable.HomogeneousRuleSet ( ra );
- } else {
- rs = null;
- }
- rsa [ i ] = rs;
- }
- // store results
- seMapping = ct;
- seEntries.add ( cdt );
- seEntries.add ( Integer.valueOf ( ngc ) );
- seEntries.add ( rsa );
- }
-
- private void readContextualSubTableFormat3(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read glyph (input sequence length) count
- int ng = in.readTTFUShort();
- // read substitution lookup count
- int nl = in.readTTFUShort();
- // read glyph coverage offsets, one per glyph input sequence length count
- int[] gcoa = new int [ ng ];
- for ( int i = 0; i < ng; i++ ) {
- gcoa [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " contextual substitution format: " + subtableFormat + " (glyph sets)" );
- log.debug(tableTag + " contextual substitution glyph input sequence length count: " + ng );
- log.debug(tableTag + " contextual substitution lookup count: " + nl );
- for ( int i = 0; i < ng; i++ ) {
- log.debug(tableTag + " contextual substitution coverage table offset[" + i + "]: " + gcoa[i] );
- }
- }
- // read coverage tables
- GlyphCoverageTable[] gca = new GlyphCoverageTable [ ng ];
- for ( int i = 0; i < ng; i++ ) {
- int gco = gcoa [ i ];
- GlyphCoverageTable gct;
- if ( gco > 0 ) {
- gct = readCoverageTable ( tableTag + " contextual substitution coverage[" + i + "]", subtableOffset + gco );
- } else {
- gct = null;
- }
- gca [ i ] = gct;
- }
- // read rule lookups
- String header = null;
- if (log.isDebugEnabled()) {
- header = tableTag + " contextual substitution lookups: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- // construct rule, rule set, and rule set array
- GlyphTable.Rule r = new GlyphTable.CoverageSequenceRule ( lookups, ng, gca );
- GlyphTable.RuleSet rs = new GlyphTable.HomogeneousRuleSet ( new GlyphTable.Rule[] {r} );
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet[] {rs};
- // store results
- assert ( gca != null ) && ( gca.length > 0 );
- seMapping = gca[0];
- seEntries.add ( rsa );
- }
-
- private int readContextualSubTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read substitution subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readContextualSubTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 2 ) {
- readContextualSubTableFormat2 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 3 ) {
- readContextualSubTableFormat3 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported contextual substitution subtable format: " + sf );
- }
- return sf;
- }
-
- private void readChainedContextualSubTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read rule set count
- int nrs = in.readTTFUShort();
- // read rule set offsets
- int[] rsoa = new int [ nrs ];
- for ( int i = 0; i < nrs; i++ ) {
- rsoa [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " chained contextual substitution format: " + subtableFormat + " (glyphs)" );
- log.debug(tableTag + " chained contextual substitution coverage table offset: " + co );
- log.debug(tableTag + " chained contextual substitution rule set count: " + nrs );
- for ( int i = 0; i < nrs; i++ ) {
- log.debug(tableTag + " chained contextual substitution rule set offset[" + i + "]: " + rsoa[i] );
- }
- }
- // read coverage table
- GlyphCoverageTable ct;
- if ( co > 0 ) {
- ct = readCoverageTable ( tableTag + " chained contextual substitution coverage", subtableOffset + co );
- } else {
- ct = null;
- }
- // read rule sets
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet [ nrs ];
- String header = null;
- for ( int i = 0; i < nrs; i++ ) {
- GlyphTable.RuleSet rs;
- int rso = rsoa [ i ];
- if ( rso > 0 ) {
- // seek to rule set [ i ]
- in.seekSet ( subtableOffset + rso );
- // read rule count
- int nr = in.readTTFUShort();
- // read rule offsets
- int[] roa = new int [ nr ];
- GlyphTable.Rule[] ra = new GlyphTable.Rule [ nr ];
- for ( int j = 0; j < nr; j++ ) {
- roa [ j ] = in.readTTFUShort();
- }
- // read glyph sequence rules
- for ( int j = 0; j < nr; j++ ) {
- GlyphTable.ChainedGlyphSequenceRule r;
- int ro = roa [ j ];
- if ( ro > 0 ) {
- // seek to rule [ j ]
- in.seekSet ( subtableOffset + rso + ro );
- // read backtrack glyph count
- int nbg = in.readTTFUShort();
- // read backtrack glyphs
- int[] backtrackGlyphs = new int [ nbg ];
- for ( int k = 0, nk = backtrackGlyphs.length; k < nk; k++ ) {
- backtrackGlyphs [ k ] = in.readTTFUShort();
- }
- // read input glyph count
- int nig = in.readTTFUShort();
- // read glyphs
- int[] glyphs = new int [ nig - 1 ];
- for ( int k = 0, nk = glyphs.length; k < nk; k++ ) {
- glyphs [ k ] = in.readTTFUShort();
- }
- // read lookahead glyph count
- int nlg = in.readTTFUShort();
- // read lookahead glyphs
- int[] lookaheadGlyphs = new int [ nlg ];
- for ( int k = 0, nk = lookaheadGlyphs.length; k < nk; k++ ) {
- lookaheadGlyphs [ k ] = in.readTTFUShort();
- }
- // read rule lookup count
- int nl = in.readTTFUShort();
- // read rule lookups
- if (log.isDebugEnabled()) {
- header = tableTag + " contextual substitution lookups @rule[" + i + "][" + j + "]: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- r = new GlyphTable.ChainedGlyphSequenceRule ( lookups, nig, glyphs, backtrackGlyphs, lookaheadGlyphs );
- } else {
- r = null;
- }
- ra [ j ] = r;
- }
- rs = new GlyphTable.HomogeneousRuleSet ( ra );
- } else {
- rs = null;
- }
- rsa [ i ] = rs;
- }
- // store results
- seMapping = ct;
- seEntries.add ( rsa );
- }
-
- private void readChainedContextualSubTableFormat2(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read backtrack class def table offset
- int bcdo = in.readTTFUShort();
- // read input class def table offset
- int icdo = in.readTTFUShort();
- // read lookahead class def table offset
- int lcdo = in.readTTFUShort();
- // read class set count
- int ngc = in.readTTFUShort();
- // read class set offsets
- int[] csoa = new int [ ngc ];
- for ( int i = 0; i < ngc; i++ ) {
- csoa [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " chained contextual substitution format: " + subtableFormat + " (glyph classes)" );
- log.debug(tableTag + " chained contextual substitution coverage table offset: " + co );
- log.debug(tableTag + " chained contextual substitution class set count: " + ngc );
- for ( int i = 0; i < ngc; i++ ) {
- log.debug(tableTag + " chained contextual substitution class set offset[" + i + "]: " + csoa[i] );
- }
- }
- // read coverage table
- GlyphCoverageTable ct;
- if ( co > 0 ) {
- ct = readCoverageTable ( tableTag + " chained contextual substitution coverage", subtableOffset + co );
- } else {
- ct = null;
- }
- // read backtrack class definition table
- GlyphClassTable bcdt;
- if ( bcdo > 0 ) {
- bcdt = readClassDefTable ( tableTag + " contextual substitution backtrack class definition", subtableOffset + bcdo );
- } else {
- bcdt = null;
- }
- // read input class definition table
- GlyphClassTable icdt;
- if ( icdo > 0 ) {
- icdt = readClassDefTable ( tableTag + " contextual substitution input class definition", subtableOffset + icdo );
- } else {
- icdt = null;
- }
- // read lookahead class definition table
- GlyphClassTable lcdt;
- if ( lcdo > 0 ) {
- lcdt = readClassDefTable ( tableTag + " contextual substitution lookahead class definition", subtableOffset + lcdo );
- } else {
- lcdt = null;
- }
- // read rule sets
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet [ ngc ];
- String header = null;
- for ( int i = 0; i < ngc; i++ ) {
- int cso = csoa [ i ];
- GlyphTable.RuleSet rs;
- if ( cso > 0 ) {
- // seek to rule set [ i ]
- in.seekSet ( subtableOffset + cso );
- // read rule count
- int nr = in.readTTFUShort();
- // read rule offsets
- int[] roa = new int [ nr ];
- GlyphTable.Rule[] ra = new GlyphTable.Rule [ nr ];
- for ( int j = 0; j < nr; j++ ) {
- roa [ j ] = in.readTTFUShort();
- }
- // read glyph sequence rules
- for ( int j = 0; j < nr; j++ ) {
- int ro = roa [ j ];
- GlyphTable.ChainedClassSequenceRule r;
- if ( ro > 0 ) {
- // seek to rule [ j ]
- in.seekSet ( subtableOffset + cso + ro );
- // read backtrack glyph class count
- int nbc = in.readTTFUShort();
- // read backtrack glyph classes
- int[] backtrackClasses = new int [ nbc ];
- for ( int k = 0, nk = backtrackClasses.length; k < nk; k++ ) {
- backtrackClasses [ k ] = in.readTTFUShort();
- }
- // read input glyph class count
- int nic = in.readTTFUShort();
- // read input glyph classes
- int[] classes = new int [ nic - 1 ];
- for ( int k = 0, nk = classes.length; k < nk; k++ ) {
- classes [ k ] = in.readTTFUShort();
- }
- // read lookahead glyph class count
- int nlc = in.readTTFUShort();
- // read lookahead glyph classes
- int[] lookaheadClasses = new int [ nlc ];
- for ( int k = 0, nk = lookaheadClasses.length; k < nk; k++ ) {
- lookaheadClasses [ k ] = in.readTTFUShort();
- }
- // read rule lookup count
- int nl = in.readTTFUShort();
- // read rule lookups
- if (log.isDebugEnabled()) {
- header = tableTag + " contextual substitution lookups @rule[" + i + "][" + j + "]: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- r = new GlyphTable.ChainedClassSequenceRule ( lookups, nic, classes, backtrackClasses, lookaheadClasses );
- } else {
- r = null;
- }
- ra [ j ] = r;
- }
- rs = new GlyphTable.HomogeneousRuleSet ( ra );
- } else {
- rs = null;
- }
- rsa [ i ] = rs;
- }
- // store results
- seMapping = ct;
- seEntries.add ( icdt );
- seEntries.add ( bcdt );
- seEntries.add ( lcdt );
- seEntries.add ( Integer.valueOf ( ngc ) );
- seEntries.add ( rsa );
- }
-
- private void readChainedContextualSubTableFormat3(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read backtrack glyph count
- int nbg = in.readTTFUShort();
- // read backtrack glyph coverage offsets
- int[] bgcoa = new int [ nbg ];
- for ( int i = 0; i < nbg; i++ ) {
- bgcoa [ i ] = in.readTTFUShort();
- }
- // read input glyph count
- int nig = in.readTTFUShort();
- // read input glyph coverage offsets
- int[] igcoa = new int [ nig ];
- for ( int i = 0; i < nig; i++ ) {
- igcoa [ i ] = in.readTTFUShort();
- }
- // read lookahead glyph count
- int nlg = in.readTTFUShort();
- // read lookahead glyph coverage offsets
- int[] lgcoa = new int [ nlg ];
- for ( int i = 0; i < nlg; i++ ) {
- lgcoa [ i ] = in.readTTFUShort();
- }
- // read substitution lookup count
- int nl = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " chained contextual substitution format: " + subtableFormat + " (glyph sets)" );
- log.debug(tableTag + " chained contextual substitution backtrack glyph count: " + nbg );
- for ( int i = 0; i < nbg; i++ ) {
- log.debug(tableTag + " chained contextual substitution backtrack coverage table offset[" + i + "]: " + bgcoa[i] );
- }
- log.debug(tableTag + " chained contextual substitution input glyph count: " + nig );
- for ( int i = 0; i < nig; i++ ) {
- log.debug(tableTag + " chained contextual substitution input coverage table offset[" + i + "]: " + igcoa[i] );
- }
- log.debug(tableTag + " chained contextual substitution lookahead glyph count: " + nlg );
- for ( int i = 0; i < nlg; i++ ) {
- log.debug(tableTag + " chained contextual substitution lookahead coverage table offset[" + i + "]: " + lgcoa[i] );
- }
- log.debug(tableTag + " chained contextual substitution lookup count: " + nl );
- }
- // read backtrack coverage tables
- GlyphCoverageTable[] bgca = new GlyphCoverageTable[nbg];
- for ( int i = 0; i < nbg; i++ ) {
- int bgco = bgcoa [ i ];
- GlyphCoverageTable bgct;
- if ( bgco > 0 ) {
- bgct = readCoverageTable ( tableTag + " chained contextual substitution backtrack coverage[" + i + "]", subtableOffset + bgco );
- } else {
- bgct = null;
- }
- bgca[i] = bgct;
- }
- // read input coverage tables
- GlyphCoverageTable[] igca = new GlyphCoverageTable[nig];
- for ( int i = 0; i < nig; i++ ) {
- int igco = igcoa [ i ];
- GlyphCoverageTable igct;
- if ( igco > 0 ) {
- igct = readCoverageTable ( tableTag + " chained contextual substitution input coverage[" + i + "]", subtableOffset + igco );
- } else {
- igct = null;
- }
- igca[i] = igct;
- }
- // read lookahead coverage tables
- GlyphCoverageTable[] lgca = new GlyphCoverageTable[nlg];
- for ( int i = 0; i < nlg; i++ ) {
- int lgco = lgcoa [ i ];
- GlyphCoverageTable lgct;
- if ( lgco > 0 ) {
- lgct = readCoverageTable ( tableTag + " chained contextual substitution lookahead coverage[" + i + "]", subtableOffset + lgco );
- } else {
- lgct = null;
- }
- lgca[i] = lgct;
- }
- // read rule lookups
- String header = null;
- if (log.isDebugEnabled()) {
- header = tableTag + " chained contextual substitution lookups: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- // construct rule, rule set, and rule set array
- GlyphTable.Rule r = new GlyphTable.ChainedCoverageSequenceRule ( lookups, nig, igca, bgca, lgca );
- GlyphTable.RuleSet rs = new GlyphTable.HomogeneousRuleSet ( new GlyphTable.Rule[] {r} );
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet[] {rs};
- // store results
- assert ( igca != null ) && ( igca.length > 0 );
- seMapping = igca[0];
- seEntries.add ( rsa );
- }
-
- private int readChainedContextualSubTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read substitution subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readChainedContextualSubTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 2 ) {
- readChainedContextualSubTableFormat2 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 3 ) {
- readChainedContextualSubTableFormat3 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported chained contextual substitution subtable format: " + sf );
- }
- return sf;
- }
-
- private void readExtensionSubTableFormat1(int lookupType, int lookupFlags, int lookupSequence, int subtableSequence, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read extension lookup type
- int lt = in.readTTFUShort();
- // read extension offset
- long eo = in.readTTFULong();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " extension substitution subtable format: " + subtableFormat );
- log.debug(tableTag + " extension substitution lookup type: " + lt );
- log.debug(tableTag + " extension substitution lookup table offset: " + eo );
- }
- // read referenced subtable from extended offset
- readGSUBSubtable ( lt, lookupFlags, lookupSequence, subtableSequence, subtableOffset + eo );
- }
-
- private int readExtensionSubTable(int lookupType, int lookupFlags, int lookupSequence, int subtableSequence, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read substitution subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readExtensionSubTableFormat1 ( lookupType, lookupFlags, lookupSequence, subtableSequence, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported extension substitution subtable format: " + sf );
- }
- return sf;
- }
-
- private void readReverseChainedSingleSubTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GSUB";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read backtrack glyph count
- int nbg = in.readTTFUShort();
- // read backtrack glyph coverage offsets
- int[] bgcoa = new int [ nbg ];
- for ( int i = 0; i < nbg; i++ ) {
- bgcoa [ i ] = in.readTTFUShort();
- }
- // read lookahead glyph count
- int nlg = in.readTTFUShort();
- // read backtrack glyph coverage offsets
- int[] lgcoa = new int [ nlg ];
- for ( int i = 0; i < nlg; i++ ) {
- lgcoa [ i ] = in.readTTFUShort();
- }
- // read substitution (output) glyph count
- int ng = in.readTTFUShort();
- // read substitution (output) glyphs
- int[] glyphs = new int [ ng ];
- for ( int i = 0, n = ng; i < n; i++ ) {
- glyphs [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " reverse chained contextual substitution format: " + subtableFormat );
- log.debug(tableTag + " reverse chained contextual substitution coverage table offset: " + co );
- log.debug(tableTag + " reverse chained contextual substitution backtrack glyph count: " + nbg );
- for ( int i = 0; i < nbg; i++ ) {
- log.debug(tableTag + " reverse chained contextual substitution backtrack coverage table offset[" + i + "]: " + bgcoa[i] );
- }
- log.debug(tableTag + " reverse chained contextual substitution lookahead glyph count: " + nlg );
- for ( int i = 0; i < nlg; i++ ) {
- log.debug(tableTag + " reverse chained contextual substitution lookahead coverage table offset[" + i + "]: " + lgcoa[i] );
- }
- log.debug(tableTag + " reverse chained contextual substitution glyphs: " + toString(glyphs) );
- }
- // read coverage table
- GlyphCoverageTable ct = readCoverageTable ( tableTag + " reverse chained contextual substitution coverage", subtableOffset + co );
- // read backtrack coverage tables
- GlyphCoverageTable[] bgca = new GlyphCoverageTable[nbg];
- for ( int i = 0; i < nbg; i++ ) {
- int bgco = bgcoa[i];
- GlyphCoverageTable bgct;
- if ( bgco > 0 ) {
- bgct = readCoverageTable ( tableTag + " reverse chained contextual substitution backtrack coverage[" + i + "]", subtableOffset + bgco );
- } else {
- bgct = null;
- }
- bgca[i] = bgct;
- }
- // read lookahead coverage tables
- GlyphCoverageTable[] lgca = new GlyphCoverageTable[nlg];
- for ( int i = 0; i < nlg; i++ ) {
- int lgco = lgcoa[i];
- GlyphCoverageTable lgct;
- if ( lgco > 0 ) {
- lgct = readCoverageTable ( tableTag + " reverse chained contextual substitution lookahead coverage[" + i + "]", subtableOffset + lgco );
- } else {
- lgct = null;
- }
- lgca[i] = lgct;
- }
- // store results
- seMapping = ct;
- seEntries.add ( bgca );
- seEntries.add ( lgca );
- seEntries.add ( glyphs );
- }
-
- private int readReverseChainedSingleSubTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read substitution subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readReverseChainedSingleSubTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported reverse chained single substitution subtable format: " + sf );
- }
- return sf;
- }
-
- private void readGSUBSubtable(int lookupType, int lookupFlags, int lookupSequence, int subtableSequence, long subtableOffset) throws IOException {
- initATSubState();
- int subtableFormat = -1;
- switch ( lookupType ) {
- case GSUBLookupType.SINGLE:
- subtableFormat = readSingleSubTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GSUBLookupType.MULTIPLE:
- subtableFormat = readMultipleSubTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GSUBLookupType.ALTERNATE:
- subtableFormat = readAlternateSubTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GSUBLookupType.LIGATURE:
- subtableFormat = readLigatureSubTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GSUBLookupType.CONTEXTUAL:
- subtableFormat = readContextualSubTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GSUBLookupType.CHAINED_CONTEXTUAL:
- subtableFormat = readChainedContextualSubTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GSUBLookupType.REVERSE_CHAINED_SINGLE:
- subtableFormat = readReverseChainedSingleSubTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GSUBLookupType.EXTENSION:
- subtableFormat = readExtensionSubTable ( lookupType, lookupFlags, lookupSequence, subtableSequence, subtableOffset );
- break;
- default:
- break;
- }
- extractSESubState ( GlyphTable.GLYPH_TABLE_TYPE_SUBSTITUTION, lookupType, lookupFlags, lookupSequence, subtableSequence, subtableFormat );
- resetATSubState();
- }
-
- private GlyphPositioningTable.DeviceTable readPosDeviceTable(long subtableOffset, long deviceTableOffset) throws IOException {
- long cp = in.getCurrentPos();
- in.seekSet(subtableOffset + deviceTableOffset);
- // read start size
- int ss = in.readTTFUShort();
- // read end size
- int es = in.readTTFUShort();
- // read delta format
- int df = in.readTTFUShort();
- int s1;
- int m1;
- int dm;
- int dd;
- int s2;
- if ( df == 1 ) {
- s1 = 14;
- m1 = 0x3;
- dm = 1;
- dd = 4;
- s2 = 2;
- } else if ( df == 2 ) {
- s1 = 12;
- m1 = 0xF;
- dm = 7;
- dd = 16;
- s2 = 4;
- } else if ( df == 3 ) {
- s1 = 8;
- m1 = 0xFF;
- dm = 127;
- dd = 256;
- s2 = 8;
- } else {
- log.debug ( "unsupported device table delta format: " + df + ", ignoring device table" );
- return null;
- }
- // read deltas
- int n = ( es - ss ) + 1;
- if ( n < 0 ) {
- log.debug ( "invalid device table delta count: " + n + ", ignoring device table" );
- return null;
- }
- int[] da = new int [ n ];
- for ( int i = 0; ( i < n ) && ( s2 > 0 );) {
- int p = in.readTTFUShort();
- for ( int j = 0, k = 16 / s2; j < k; j++ ) {
- int d = ( p >> s1 ) & m1;
- if ( d > dm ) {
- d -= dd;
- }
- if ( i < n ) {
- da [ i++ ] = d;
- } else {
- break;
- }
- p <<= s2;
- }
- }
- in.seekSet(cp);
- return new GlyphPositioningTable.DeviceTable ( ss, es, da );
- }
-
- private GlyphPositioningTable.Value readPosValue(long subtableOffset, int valueFormat) throws IOException {
- // XPlacement
- int xp;
- if ( ( valueFormat & GlyphPositioningTable.Value.X_PLACEMENT ) != 0 ) {
- xp = ttf.convertTTFUnit2PDFUnit ( in.readTTFShort() );
- } else {
- xp = 0;
- }
- // YPlacement
- int yp;
- if ( ( valueFormat & GlyphPositioningTable.Value.Y_PLACEMENT ) != 0 ) {
- yp = ttf.convertTTFUnit2PDFUnit ( in.readTTFShort() );
- } else {
- yp = 0;
- }
- // XAdvance
- int xa;
- if ( ( valueFormat & GlyphPositioningTable.Value.X_ADVANCE ) != 0 ) {
- xa = ttf.convertTTFUnit2PDFUnit ( in.readTTFShort() );
- } else {
- xa = 0;
- }
- // YAdvance
- int ya;
- if ( ( valueFormat & GlyphPositioningTable.Value.Y_ADVANCE ) != 0 ) {
- ya = ttf.convertTTFUnit2PDFUnit ( in.readTTFShort() );
- } else {
- ya = 0;
- }
- // XPlaDevice
- GlyphPositioningTable.DeviceTable xpd;
- if ( ( valueFormat & GlyphPositioningTable.Value.X_PLACEMENT_DEVICE ) != 0 ) {
- int xpdo = in.readTTFUShort();
- xpd = readPosDeviceTable ( subtableOffset, xpdo );
- } else {
- xpd = null;
- }
- // YPlaDevice
- GlyphPositioningTable.DeviceTable ypd;
- if ( ( valueFormat & GlyphPositioningTable.Value.Y_PLACEMENT_DEVICE ) != 0 ) {
- int ypdo = in.readTTFUShort();
- ypd = readPosDeviceTable ( subtableOffset, ypdo );
- } else {
- ypd = null;
- }
- // XAdvDevice
- GlyphPositioningTable.DeviceTable xad;
- if ( ( valueFormat & GlyphPositioningTable.Value.X_ADVANCE_DEVICE ) != 0 ) {
- int xado = in.readTTFUShort();
- xad = readPosDeviceTable ( subtableOffset, xado );
- } else {
- xad = null;
- }
- // YAdvDevice
- GlyphPositioningTable.DeviceTable yad;
- if ( ( valueFormat & GlyphPositioningTable.Value.Y_ADVANCE_DEVICE ) != 0 ) {
- int yado = in.readTTFUShort();
- yad = readPosDeviceTable ( subtableOffset, yado );
- } else {
- yad = null;
- }
- return new GlyphPositioningTable.Value ( xp, yp, xa, ya, xpd, ypd, xad, yad );
- }
-
- private void readSinglePosTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read value format
- int vf = in.readTTFUShort();
- // read value
- GlyphPositioningTable.Value v = readPosValue ( subtableOffset, vf );
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " single positioning subtable format: " + subtableFormat + " (delta)" );
- log.debug(tableTag + " single positioning coverage table offset: " + co );
- log.debug(tableTag + " single positioning value: " + v );
- }
- // read coverage table
- GlyphCoverageTable ct = readCoverageTable ( tableTag + " single positioning coverage", subtableOffset + co );
- // store results
- seMapping = ct;
- seEntries.add ( v );
- }
-
- private void readSinglePosTableFormat2(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read value format
- int vf = in.readTTFUShort();
- // read value count
- int nv = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " single positioning subtable format: " + subtableFormat + " (mapped)" );
- log.debug(tableTag + " single positioning coverage table offset: " + co );
- log.debug(tableTag + " single positioning value count: " + nv );
- }
- // read coverage table
- GlyphCoverageTable ct = readCoverageTable ( tableTag + " single positioning coverage", subtableOffset + co );
- // read positioning values
- GlyphPositioningTable.Value[] pva = new GlyphPositioningTable.Value[nv];
- for ( int i = 0, n = nv; i < n; i++ ) {
- GlyphPositioningTable.Value pv = readPosValue ( subtableOffset, vf );
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " single positioning value[" + i + "]: " + pv );
- }
- pva[i] = pv;
- }
- // store results
- seMapping = ct;
- seEntries.add ( pva );
- }
-
- private int readSinglePosTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read positionining subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readSinglePosTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 2 ) {
- readSinglePosTableFormat2 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported single positioning subtable format: " + sf );
- }
- return sf;
- }
-
- private GlyphPositioningTable.PairValues readPosPairValues(long subtableOffset, boolean hasGlyph, int vf1, int vf2) throws IOException {
- // read glyph (if present)
- int glyph;
- if ( hasGlyph ) {
- glyph = in.readTTFUShort();
- } else {
- glyph = 0;
- }
- // read first value (if present)
- GlyphPositioningTable.Value v1;
- if ( vf1 != 0 ) {
- v1 = readPosValue ( subtableOffset, vf1 );
- } else {
- v1 = null;
- }
- // read second value (if present)
- GlyphPositioningTable.Value v2;
- if ( vf2 != 0 ) {
- v2 = readPosValue ( subtableOffset, vf2 );
- } else {
- v2 = null;
- }
- return new GlyphPositioningTable.PairValues ( glyph, v1, v2 );
- }
-
- private GlyphPositioningTable.PairValues[] readPosPairSetTable(long subtableOffset, int pairSetTableOffset, int vf1, int vf2) throws IOException {
- String tableTag = "GPOS";
- long cp = in.getCurrentPos();
- in.seekSet(subtableOffset + pairSetTableOffset);
- // read pair values count
- int npv = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " pair set table offset: " + pairSetTableOffset );
- log.debug(tableTag + " pair set table values count: " + npv );
- }
- // read pair values
- GlyphPositioningTable.PairValues[] pva = new GlyphPositioningTable.PairValues [ npv ];
- for ( int i = 0, n = npv; i < n; i++ ) {
- GlyphPositioningTable.PairValues pv = readPosPairValues ( subtableOffset, true, vf1, vf2 );
- pva [ i ] = pv;
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " pair set table value[" + i + "]: " + pv);
- }
- }
- in.seekSet(cp);
- return pva;
- }
-
- private void readPairPosTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read value format for first glyph
- int vf1 = in.readTTFUShort();
- // read value format for second glyph
- int vf2 = in.readTTFUShort();
- // read number (count) of pair sets
- int nps = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " pair positioning subtable format: " + subtableFormat + " (glyphs)" );
- log.debug(tableTag + " pair positioning coverage table offset: " + co );
- log.debug(tableTag + " pair positioning value format #1: " + vf1 );
- log.debug(tableTag + " pair positioning value format #2: " + vf2 );
- }
- // read coverage table
- GlyphCoverageTable ct = readCoverageTable ( tableTag + " pair positioning coverage", subtableOffset + co );
- // read pair value matrix
- GlyphPositioningTable.PairValues[][] pvm = new GlyphPositioningTable.PairValues [ nps ][];
- for ( int i = 0, n = nps; i < n; i++ ) {
- // read pair set offset
- int pso = in.readTTFUShort();
- // read pair set table at offset
- pvm [ i ] = readPosPairSetTable ( subtableOffset, pso, vf1, vf2 );
- }
- // store results
- seMapping = ct;
- seEntries.add ( pvm );
- }
-
- private void readPairPosTableFormat2(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read value format for first glyph
- int vf1 = in.readTTFUShort();
- // read value format for second glyph
- int vf2 = in.readTTFUShort();
- // read class def 1 offset
- int cd1o = in.readTTFUShort();
- // read class def 2 offset
- int cd2o = in.readTTFUShort();
- // read number (count) of classes in class def 1 table
- int nc1 = in.readTTFUShort();
- // read number (count) of classes in class def 2 table
- int nc2 = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " pair positioning subtable format: " + subtableFormat + " (glyph classes)" );
- log.debug(tableTag + " pair positioning coverage table offset: " + co );
- log.debug(tableTag + " pair positioning value format #1: " + vf1 );
- log.debug(tableTag + " pair positioning value format #2: " + vf2 );
- log.debug(tableTag + " pair positioning class def table #1 offset: " + cd1o );
- log.debug(tableTag + " pair positioning class def table #2 offset: " + cd2o );
- log.debug(tableTag + " pair positioning class #1 count: " + nc1 );
- log.debug(tableTag + " pair positioning class #2 count: " + nc2 );
- }
- // read coverage table
- GlyphCoverageTable ct = readCoverageTable ( tableTag + " pair positioning coverage", subtableOffset + co );
- // read class definition table #1
- GlyphClassTable cdt1 = readClassDefTable ( tableTag + " pair positioning class definition #1", subtableOffset + cd1o );
- // read class definition table #2
- GlyphClassTable cdt2 = readClassDefTable ( tableTag + " pair positioning class definition #2", subtableOffset + cd2o );
- // read pair value matrix
- GlyphPositioningTable.PairValues[][] pvm = new GlyphPositioningTable.PairValues [ nc1 ] [ nc2 ];
- for ( int i = 0; i < nc1; i++ ) {
- for ( int j = 0; j < nc2; j++ ) {
- GlyphPositioningTable.PairValues pv = readPosPairValues ( subtableOffset, false, vf1, vf2 );
- pvm [ i ] [ j ] = pv;
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " pair set table value[" + i + "][" + j + "]: " + pv);
- }
- }
- }
- // store results
- seMapping = ct;
- seEntries.add ( cdt1 );
- seEntries.add ( cdt2 );
- seEntries.add ( Integer.valueOf ( nc1 ) );
- seEntries.add ( Integer.valueOf ( nc2 ) );
- seEntries.add ( pvm );
- }
-
- private int readPairPosTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read positioning subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readPairPosTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 2 ) {
- readPairPosTableFormat2 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported pair positioning subtable format: " + sf );
- }
- return sf;
- }
-
- private GlyphPositioningTable.Anchor readPosAnchor(long anchorTableOffset) throws IOException {
- GlyphPositioningTable.Anchor a;
- long cp = in.getCurrentPos();
- in.seekSet(anchorTableOffset);
- // read anchor table format
- int af = in.readTTFUShort();
- if ( af == 1 ) {
- // read x coordinate
- int x = ttf.convertTTFUnit2PDFUnit ( in.readTTFShort() );
- // read y coordinate
- int y = ttf.convertTTFUnit2PDFUnit ( in.readTTFShort() );
- a = new GlyphPositioningTable.Anchor ( x, y );
- } else if ( af == 2 ) {
- // read x coordinate
- int x = ttf.convertTTFUnit2PDFUnit ( in.readTTFShort() );
- // read y coordinate
- int y = ttf.convertTTFUnit2PDFUnit ( in.readTTFShort() );
- // read anchor point index
- int ap = in.readTTFUShort();
- a = new GlyphPositioningTable.Anchor ( x, y, ap );
- } else if ( af == 3 ) {
- // read x coordinate
- int x = ttf.convertTTFUnit2PDFUnit ( in.readTTFShort() );
- // read y coordinate
- int y = ttf.convertTTFUnit2PDFUnit ( in.readTTFShort() );
- // read x device table offset
- int xdo = in.readTTFUShort();
- // read y device table offset
- int ydo = in.readTTFUShort();
- // read x device table (if present)
- GlyphPositioningTable.DeviceTable xd;
- if ( xdo != 0 ) {
- xd = readPosDeviceTable ( cp, xdo );
- } else {
- xd = null;
- }
- // read y device table (if present)
- GlyphPositioningTable.DeviceTable yd;
- if ( ydo != 0 ) {
- yd = readPosDeviceTable ( cp, ydo );
- } else {
- yd = null;
- }
- a = new GlyphPositioningTable.Anchor ( x, y, xd, yd );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported positioning anchor format: " + af );
- }
- in.seekSet(cp);
- return a;
- }
-
- private void readCursivePosTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read entry/exit count
- int ec = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " cursive positioning subtable format: " + subtableFormat );
- log.debug(tableTag + " cursive positioning coverage table offset: " + co );
- log.debug(tableTag + " cursive positioning entry/exit count: " + ec );
- }
- // read coverage table
- GlyphCoverageTable ct = readCoverageTable ( tableTag + " cursive positioning coverage", subtableOffset + co );
- // read entry/exit records
- GlyphPositioningTable.Anchor[] aa = new GlyphPositioningTable.Anchor [ ec * 2 ];
- for ( int i = 0, n = ec; i < n; i++ ) {
- // read entry anchor offset
- int eno = in.readTTFUShort();
- // read exit anchor offset
- int exo = in.readTTFUShort();
- // read entry anchor
- GlyphPositioningTable.Anchor ena;
- if ( eno > 0 ) {
- ena = readPosAnchor ( subtableOffset + eno );
- } else {
- ena = null;
- }
- // read exit anchor
- GlyphPositioningTable.Anchor exa;
- if ( exo > 0 ) {
- exa = readPosAnchor ( subtableOffset + exo );
- } else {
- exa = null;
- }
- aa [ ( i * 2 ) + 0 ] = ena;
- aa [ ( i * 2 ) + 1 ] = exa;
- if (log.isDebugEnabled()) {
- if ( ena != null ) {
- log.debug(tableTag + " cursive entry anchor [" + i + "]: " + ena );
- }
- if ( exa != null ) {
- log.debug(tableTag + " cursive exit anchor [" + i + "]: " + exa );
- }
- }
- }
- // store results
- seMapping = ct;
- seEntries.add ( aa );
- }
-
- private int readCursivePosTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read positioning subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readCursivePosTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported cursive positioning subtable format: " + sf );
- }
- return sf;
- }
-
- private void readMarkToBasePosTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read mark coverage offset
- int mco = in.readTTFUShort();
- // read base coverage offset
- int bco = in.readTTFUShort();
- // read mark class count
- int nmc = in.readTTFUShort();
- // read mark array offset
- int mao = in.readTTFUShort();
- // read base array offset
- int bao = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-base positioning subtable format: " + subtableFormat );
- log.debug(tableTag + " mark-to-base positioning mark coverage table offset: " + mco );
- log.debug(tableTag + " mark-to-base positioning base coverage table offset: " + bco );
- log.debug(tableTag + " mark-to-base positioning mark class count: " + nmc );
- log.debug(tableTag + " mark-to-base positioning mark array offset: " + mao );
- log.debug(tableTag + " mark-to-base positioning base array offset: " + bao );
- }
- // read mark coverage table
- GlyphCoverageTable mct = readCoverageTable ( tableTag + " mark-to-base positioning mark coverage", subtableOffset + mco );
- // read base coverage table
- GlyphCoverageTable bct = readCoverageTable ( tableTag + " mark-to-base positioning base coverage", subtableOffset + bco );
- // read mark anchor array
- // seek to mark array
- in.seekSet(subtableOffset + mao);
- // read mark count
- int nm = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-base positioning mark count: " + nm );
- }
- // read mark anchor array, where i:{0...markCount}
- GlyphPositioningTable.MarkAnchor[] maa = new GlyphPositioningTable.MarkAnchor [ nm ];
- for ( int i = 0; i < nm; i++ ) {
- // read mark class
- int mc = in.readTTFUShort();
- // read mark anchor offset
- int ao = in.readTTFUShort();
- GlyphPositioningTable.Anchor a;
- if ( ao > 0 ) {
- a = readPosAnchor ( subtableOffset + mao + ao );
- } else {
- a = null;
- }
- GlyphPositioningTable.MarkAnchor ma;
- if ( a != null ) {
- ma = new GlyphPositioningTable.MarkAnchor ( mc, a );
- } else {
- ma = null;
- }
- maa [ i ] = ma;
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-base positioning mark anchor[" + i + "]: " + ma);
- }
-
- }
- // read base anchor matrix
- // seek to base array
- in.seekSet(subtableOffset + bao);
- // read base count
- int nb = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-base positioning base count: " + nb );
- }
- // read anchor matrix, where i:{0...baseCount - 1}, j:{0...markClassCount - 1}
- GlyphPositioningTable.Anchor[][] bam = new GlyphPositioningTable.Anchor [ nb ] [ nmc ];
- for ( int i = 0; i < nb; i++ ) {
- for ( int j = 0; j < nmc; j++ ) {
- // read base anchor offset
- int ao = in.readTTFUShort();
- GlyphPositioningTable.Anchor a;
- if ( ao > 0 ) {
- a = readPosAnchor ( subtableOffset + bao + ao );
- } else {
- a = null;
- }
- bam [ i ] [ j ] = a;
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-base positioning base anchor[" + i + "][" + j + "]: " + a);
- }
- }
- }
- // store results
- seMapping = mct;
- seEntries.add ( bct );
- seEntries.add ( Integer.valueOf ( nmc ) );
- seEntries.add ( maa );
- seEntries.add ( bam );
- }
-
- private int readMarkToBasePosTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read positioning subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readMarkToBasePosTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported mark-to-base positioning subtable format: " + sf );
- }
- return sf;
- }
-
- private void readMarkToLigaturePosTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read mark coverage offset
- int mco = in.readTTFUShort();
- // read ligature coverage offset
- int lco = in.readTTFUShort();
- // read mark class count
- int nmc = in.readTTFUShort();
- // read mark array offset
- int mao = in.readTTFUShort();
- // read ligature array offset
- int lao = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-ligature positioning subtable format: " + subtableFormat );
- log.debug(tableTag + " mark-to-ligature positioning mark coverage table offset: " + mco );
- log.debug(tableTag + " mark-to-ligature positioning ligature coverage table offset: " + lco );
- log.debug(tableTag + " mark-to-ligature positioning mark class count: " + nmc );
- log.debug(tableTag + " mark-to-ligature positioning mark array offset: " + mao );
- log.debug(tableTag + " mark-to-ligature positioning ligature array offset: " + lao );
- }
- // read mark coverage table
- GlyphCoverageTable mct = readCoverageTable ( tableTag + " mark-to-ligature positioning mark coverage", subtableOffset + mco );
- // read ligature coverage table
- GlyphCoverageTable lct = readCoverageTable ( tableTag + " mark-to-ligature positioning ligature coverage", subtableOffset + lco );
- // read mark anchor array
- // seek to mark array
- in.seekSet(subtableOffset + mao);
- // read mark count
- int nm = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-ligature positioning mark count: " + nm );
- }
- // read mark anchor array, where i:{0...markCount}
- GlyphPositioningTable.MarkAnchor[] maa = new GlyphPositioningTable.MarkAnchor [ nm ];
- for ( int i = 0; i < nm; i++ ) {
- // read mark class
- int mc = in.readTTFUShort();
- // read mark anchor offset
- int ao = in.readTTFUShort();
- GlyphPositioningTable.Anchor a;
- if ( ao > 0 ) {
- a = readPosAnchor ( subtableOffset + mao + ao );
- } else {
- a = null;
- }
- GlyphPositioningTable.MarkAnchor ma;
- if ( a != null ) {
- ma = new GlyphPositioningTable.MarkAnchor ( mc, a );
- } else {
- ma = null;
- }
- maa [ i ] = ma;
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-ligature positioning mark anchor[" + i + "]: " + ma);
- }
- }
- // read ligature anchor matrix
- // seek to ligature array
- in.seekSet(subtableOffset + lao);
- // read ligature count
- int nl = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-ligature positioning ligature count: " + nl );
- }
- // read ligature attach table offsets
- int[] laoa = new int [ nl ];
- for ( int i = 0; i < nl; i++ ) {
- laoa [ i ] = in.readTTFUShort();
- }
- // iterate over ligature attach tables, recording maximum component count
- int mxc = 0;
- for ( int i = 0; i < nl; i++ ) {
- int lato = laoa [ i ];
- in.seekSet ( subtableOffset + lao + lato );
- // read component count
- int cc = in.readTTFUShort();
- if ( cc > mxc ) {
- mxc = cc;
- }
- }
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-ligature positioning maximum component count: " + mxc );
- }
- // read anchor matrix, where i:{0...ligatureCount - 1}, j:{0...maxComponentCount - 1}, k:{0...markClassCount - 1}
- GlyphPositioningTable.Anchor[][][] lam = new GlyphPositioningTable.Anchor [ nl ][][];
- for ( int i = 0; i < nl; i++ ) {
- int lato = laoa [ i ];
- // seek to ligature attach table for ligature[i]
- in.seekSet ( subtableOffset + lao + lato );
- // read component count
- int cc = in.readTTFUShort();
- GlyphPositioningTable.Anchor[][] lcm = new GlyphPositioningTable.Anchor [ cc ] [ nmc ];
- for ( int j = 0; j < cc; j++ ) {
- for ( int k = 0; k < nmc; k++ ) {
- // read ligature anchor offset
- int ao = in.readTTFUShort();
- GlyphPositioningTable.Anchor a;
- if ( ao > 0 ) {
- a = readPosAnchor ( subtableOffset + lao + lato + ao );
- } else {
- a = null;
- }
- lcm [ j ] [ k ] = a;
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-ligature positioning ligature anchor[" + i + "][" + j + "][" + k + "]: " + a);
- }
- }
- }
- lam [ i ] = lcm;
- }
- // store results
- seMapping = mct;
- seEntries.add ( lct );
- seEntries.add ( Integer.valueOf ( nmc ) );
- seEntries.add ( Integer.valueOf ( mxc ) );
- seEntries.add ( maa );
- seEntries.add ( lam );
- }
-
- private int readMarkToLigaturePosTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read positioning subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readMarkToLigaturePosTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported mark-to-ligature positioning subtable format: " + sf );
- }
- return sf;
- }
-
- private void readMarkToMarkPosTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read mark #1 coverage offset
- int m1co = in.readTTFUShort();
- // read mark #2 coverage offset
- int m2co = in.readTTFUShort();
- // read mark class count
- int nmc = in.readTTFUShort();
- // read mark #1 array offset
- int m1ao = in.readTTFUShort();
- // read mark #2 array offset
- int m2ao = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-mark positioning subtable format: " + subtableFormat );
- log.debug(tableTag + " mark-to-mark positioning mark #1 coverage table offset: " + m1co );
- log.debug(tableTag + " mark-to-mark positioning mark #2 coverage table offset: " + m2co );
- log.debug(tableTag + " mark-to-mark positioning mark class count: " + nmc );
- log.debug(tableTag + " mark-to-mark positioning mark #1 array offset: " + m1ao );
- log.debug(tableTag + " mark-to-mark positioning mark #2 array offset: " + m2ao );
- }
- // read mark #1 coverage table
- GlyphCoverageTable mct1 = readCoverageTable ( tableTag + " mark-to-mark positioning mark #1 coverage", subtableOffset + m1co );
- // read mark #2 coverage table
- GlyphCoverageTable mct2 = readCoverageTable ( tableTag + " mark-to-mark positioning mark #2 coverage", subtableOffset + m2co );
- // read mark #1 anchor array
- // seek to mark array
- in.seekSet(subtableOffset + m1ao);
- // read mark count
- int nm1 = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-mark positioning mark #1 count: " + nm1 );
- }
- // read mark anchor array, where i:{0...mark1Count}
- GlyphPositioningTable.MarkAnchor[] maa = new GlyphPositioningTable.MarkAnchor [ nm1 ];
- for ( int i = 0; i < nm1; i++ ) {
- // read mark class
- int mc = in.readTTFUShort();
- // read mark anchor offset
- int ao = in.readTTFUShort();
- GlyphPositioningTable.Anchor a;
- if ( ao > 0 ) {
- a = readPosAnchor ( subtableOffset + m1ao + ao );
- } else {
- a = null;
- }
- GlyphPositioningTable.MarkAnchor ma;
- if ( a != null ) {
- ma = new GlyphPositioningTable.MarkAnchor ( mc, a );
- } else {
- ma = null;
- }
- maa [ i ] = ma;
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-mark positioning mark #1 anchor[" + i + "]: " + ma);
- }
- }
- // read mark #2 anchor matrix
- // seek to mark #2 array
- in.seekSet(subtableOffset + m2ao);
- // read mark #2 count
- int nm2 = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-mark positioning mark #2 count: " + nm2 );
- }
- // read anchor matrix, where i:{0...mark2Count - 1}, j:{0...markClassCount - 1}
- GlyphPositioningTable.Anchor[][] mam = new GlyphPositioningTable.Anchor [ nm2 ] [ nmc ];
- for ( int i = 0; i < nm2; i++ ) {
- for ( int j = 0; j < nmc; j++ ) {
- // read mark anchor offset
- int ao = in.readTTFUShort();
- GlyphPositioningTable.Anchor a;
- if ( ao > 0 ) {
- a = readPosAnchor ( subtableOffset + m2ao + ao );
- } else {
- a = null;
- }
- mam [ i ] [ j ] = a;
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark-to-mark positioning mark #2 anchor[" + i + "][" + j + "]: " + a);
- }
- }
- }
- // store results
- seMapping = mct1;
- seEntries.add ( mct2 );
- seEntries.add ( Integer.valueOf ( nmc ) );
- seEntries.add ( maa );
- seEntries.add ( mam );
- }
-
- private int readMarkToMarkPosTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read positioning subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readMarkToMarkPosTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported mark-to-mark positioning subtable format: " + sf );
- }
- return sf;
- }
-
- private void readContextualPosTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read rule set count
- int nrs = in.readTTFUShort();
- // read rule set offsets
- int[] rsoa = new int [ nrs ];
- for ( int i = 0; i < nrs; i++ ) {
- rsoa [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " contextual positioning subtable format: " + subtableFormat + " (glyphs)" );
- log.debug(tableTag + " contextual positioning coverage table offset: " + co );
- log.debug(tableTag + " contextual positioning rule set count: " + nrs );
- for ( int i = 0; i < nrs; i++ ) {
- log.debug(tableTag + " contextual positioning rule set offset[" + i + "]: " + rsoa[i] );
- }
- }
- // read coverage table
- GlyphCoverageTable ct;
- if ( co > 0 ) {
- ct = readCoverageTable ( tableTag + " contextual positioning coverage", subtableOffset + co );
- } else {
- ct = null;
- }
- // read rule sets
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet [ nrs ];
- String header = null;
- for ( int i = 0; i < nrs; i++ ) {
- GlyphTable.RuleSet rs;
- int rso = rsoa [ i ];
- if ( rso > 0 ) {
- // seek to rule set [ i ]
- in.seekSet ( subtableOffset + rso );
- // read rule count
- int nr = in.readTTFUShort();
- // read rule offsets
- int[] roa = new int [ nr ];
- GlyphTable.Rule[] ra = new GlyphTable.Rule [ nr ];
- for ( int j = 0; j < nr; j++ ) {
- roa [ j ] = in.readTTFUShort();
- }
- // read glyph sequence rules
- for ( int j = 0; j < nr; j++ ) {
- GlyphTable.GlyphSequenceRule r;
- int ro = roa [ j ];
- if ( ro > 0 ) {
- // seek to rule [ j ]
- in.seekSet ( subtableOffset + rso + ro );
- // read glyph count
- int ng = in.readTTFUShort();
- // read rule lookup count
- int nl = in.readTTFUShort();
- // read glyphs
- int[] glyphs = new int [ ng - 1 ];
- for ( int k = 0, nk = glyphs.length; k < nk; k++ ) {
- glyphs [ k ] = in.readTTFUShort();
- }
- // read rule lookups
- if (log.isDebugEnabled()) {
- header = tableTag + " contextual positioning lookups @rule[" + i + "][" + j + "]: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- r = new GlyphTable.GlyphSequenceRule ( lookups, ng, glyphs );
- } else {
- r = null;
- }
- ra [ j ] = r;
- }
- rs = new GlyphTable.HomogeneousRuleSet ( ra );
- } else {
- rs = null;
- }
- rsa [ i ] = rs;
- }
- // store results
- seMapping = ct;
- seEntries.add ( rsa );
- }
-
- private void readContextualPosTableFormat2(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read class def table offset
- int cdo = in.readTTFUShort();
- // read class rule set count
- int ngc = in.readTTFUShort();
- // read class rule set offsets
- int[] csoa = new int [ ngc ];
- for ( int i = 0; i < ngc; i++ ) {
- csoa [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " contextual positioning subtable format: " + subtableFormat + " (glyph classes)" );
- log.debug(tableTag + " contextual positioning coverage table offset: " + co );
- log.debug(tableTag + " contextual positioning class set count: " + ngc );
- for ( int i = 0; i < ngc; i++ ) {
- log.debug(tableTag + " contextual positioning class set offset[" + i + "]: " + csoa[i] );
- }
- }
- // read coverage table
- GlyphCoverageTable ct;
- if ( co > 0 ) {
- ct = readCoverageTable ( tableTag + " contextual positioning coverage", subtableOffset + co );
- } else {
- ct = null;
- }
- // read class definition table
- GlyphClassTable cdt;
- if ( cdo > 0 ) {
- cdt = readClassDefTable ( tableTag + " contextual positioning class definition", subtableOffset + cdo );
- } else {
- cdt = null;
- }
- // read rule sets
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet [ ngc ];
- String header = null;
- for ( int i = 0; i < ngc; i++ ) {
- int cso = csoa [ i ];
- GlyphTable.RuleSet rs;
- if ( cso > 0 ) {
- // seek to rule set [ i ]
- in.seekSet ( subtableOffset + cso );
- // read rule count
- int nr = in.readTTFUShort();
- // read rule offsets
- int[] roa = new int [ nr ];
- GlyphTable.Rule[] ra = new GlyphTable.Rule [ nr ];
- for ( int j = 0; j < nr; j++ ) {
- roa [ j ] = in.readTTFUShort();
- }
- // read glyph sequence rules
- for ( int j = 0; j < nr; j++ ) {
- int ro = roa [ j ];
- GlyphTable.ClassSequenceRule r;
- if ( ro > 0 ) {
- // seek to rule [ j ]
- in.seekSet ( subtableOffset + cso + ro );
- // read glyph count
- int ng = in.readTTFUShort();
- // read rule lookup count
- int nl = in.readTTFUShort();
- // read classes
- int[] classes = new int [ ng - 1 ];
- for ( int k = 0, nk = classes.length; k < nk; k++ ) {
- classes [ k ] = in.readTTFUShort();
- }
- // read rule lookups
- if (log.isDebugEnabled()) {
- header = tableTag + " contextual positioning lookups @rule[" + i + "][" + j + "]: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- r = new GlyphTable.ClassSequenceRule ( lookups, ng, classes );
- } else {
- r = null;
- }
- ra [ j ] = r;
- }
- rs = new GlyphTable.HomogeneousRuleSet ( ra );
- } else {
- rs = null;
- }
- rsa [ i ] = rs;
- }
- // store results
- seMapping = ct;
- seEntries.add ( cdt );
- seEntries.add ( Integer.valueOf ( ngc ) );
- seEntries.add ( rsa );
- }
-
- private void readContextualPosTableFormat3(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read glyph (input sequence length) count
- int ng = in.readTTFUShort();
- // read positioning lookup count
- int nl = in.readTTFUShort();
- // read glyph coverage offsets, one per glyph input sequence length count
- int[] gcoa = new int [ ng ];
- for ( int i = 0; i < ng; i++ ) {
- gcoa [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " contextual positioning subtable format: " + subtableFormat + " (glyph sets)" );
- log.debug(tableTag + " contextual positioning glyph input sequence length count: " + ng );
- log.debug(tableTag + " contextual positioning lookup count: " + nl );
- for ( int i = 0; i < ng; i++ ) {
- log.debug(tableTag + " contextual positioning coverage table offset[" + i + "]: " + gcoa[i] );
- }
- }
- // read coverage tables
- GlyphCoverageTable[] gca = new GlyphCoverageTable [ ng ];
- for ( int i = 0; i < ng; i++ ) {
- int gco = gcoa [ i ];
- GlyphCoverageTable gct;
- if ( gco > 0 ) {
- gct = readCoverageTable ( tableTag + " contextual positioning coverage[" + i + "]", subtableOffset + gcoa[i] );
- } else {
- gct = null;
- }
- gca [ i ] = gct;
- }
- // read rule lookups
- String header = null;
- if (log.isDebugEnabled()) {
- header = tableTag + " contextual positioning lookups: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- // construct rule, rule set, and rule set array
- GlyphTable.Rule r = new GlyphTable.CoverageSequenceRule ( lookups, ng, gca );
- GlyphTable.RuleSet rs = new GlyphTable.HomogeneousRuleSet ( new GlyphTable.Rule[] {r} );
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet[] {rs};
- // store results
- assert ( gca != null ) && ( gca.length > 0 );
- seMapping = gca[0];
- seEntries.add ( rsa );
- }
-
- private int readContextualPosTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read positioning subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readContextualPosTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 2 ) {
- readContextualPosTableFormat2 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 3 ) {
- readContextualPosTableFormat3 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported contextual positioning subtable format: " + sf );
- }
- return sf;
- }
-
- private void readChainedContextualPosTableFormat1(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read rule set count
- int nrs = in.readTTFUShort();
- // read rule set offsets
- int[] rsoa = new int [ nrs ];
- for ( int i = 0; i < nrs; i++ ) {
- rsoa [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " chained contextual positioning subtable format: " + subtableFormat + " (glyphs)" );
- log.debug(tableTag + " chained contextual positioning coverage table offset: " + co );
- log.debug(tableTag + " chained contextual positioning rule set count: " + nrs );
- for ( int i = 0; i < nrs; i++ ) {
- log.debug(tableTag + " chained contextual positioning rule set offset[" + i + "]: " + rsoa[i] );
- }
- }
- // read coverage table
- GlyphCoverageTable ct;
- if ( co > 0 ) {
- ct = readCoverageTable ( tableTag + " chained contextual positioning coverage", subtableOffset + co );
- } else {
- ct = null;
- }
- // read rule sets
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet [ nrs ];
- String header = null;
- for ( int i = 0; i < nrs; i++ ) {
- GlyphTable.RuleSet rs;
- int rso = rsoa [ i ];
- if ( rso > 0 ) {
- // seek to rule set [ i ]
- in.seekSet ( subtableOffset + rso );
- // read rule count
- int nr = in.readTTFUShort();
- // read rule offsets
- int[] roa = new int [ nr ];
- GlyphTable.Rule[] ra = new GlyphTable.Rule [ nr ];
- for ( int j = 0; j < nr; j++ ) {
- roa [ j ] = in.readTTFUShort();
- }
- // read glyph sequence rules
- for ( int j = 0; j < nr; j++ ) {
- GlyphTable.ChainedGlyphSequenceRule r;
- int ro = roa [ j ];
- if ( ro > 0 ) {
- // seek to rule [ j ]
- in.seekSet ( subtableOffset + rso + ro );
- // read backtrack glyph count
- int nbg = in.readTTFUShort();
- // read backtrack glyphs
- int[] backtrackGlyphs = new int [ nbg ];
- for ( int k = 0, nk = backtrackGlyphs.length; k < nk; k++ ) {
- backtrackGlyphs [ k ] = in.readTTFUShort();
- }
- // read input glyph count
- int nig = in.readTTFUShort();
- // read glyphs
- int[] glyphs = new int [ nig - 1 ];
- for ( int k = 0, nk = glyphs.length; k < nk; k++ ) {
- glyphs [ k ] = in.readTTFUShort();
- }
- // read lookahead glyph count
- int nlg = in.readTTFUShort();
- // read lookahead glyphs
- int[] lookaheadGlyphs = new int [ nlg ];
- for ( int k = 0, nk = lookaheadGlyphs.length; k < nk; k++ ) {
- lookaheadGlyphs [ k ] = in.readTTFUShort();
- }
- // read rule lookup count
- int nl = in.readTTFUShort();
- // read rule lookups
- if (log.isDebugEnabled()) {
- header = tableTag + " contextual positioning lookups @rule[" + i + "][" + j + "]: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- r = new GlyphTable.ChainedGlyphSequenceRule ( lookups, nig, glyphs, backtrackGlyphs, lookaheadGlyphs );
- } else {
- r = null;
- }
- ra [ j ] = r;
- }
- rs = new GlyphTable.HomogeneousRuleSet ( ra );
- } else {
- rs = null;
- }
- rsa [ i ] = rs;
- }
- // store results
- seMapping = ct;
- seEntries.add ( rsa );
- }
-
- private void readChainedContextualPosTableFormat2(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read coverage offset
- int co = in.readTTFUShort();
- // read backtrack class def table offset
- int bcdo = in.readTTFUShort();
- // read input class def table offset
- int icdo = in.readTTFUShort();
- // read lookahead class def table offset
- int lcdo = in.readTTFUShort();
- // read class set count
- int ngc = in.readTTFUShort();
- // read class set offsets
- int[] csoa = new int [ ngc ];
- for ( int i = 0; i < ngc; i++ ) {
- csoa [ i ] = in.readTTFUShort();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " chained contextual positioning subtable format: " + subtableFormat + " (glyph classes)" );
- log.debug(tableTag + " chained contextual positioning coverage table offset: " + co );
- log.debug(tableTag + " chained contextual positioning class set count: " + ngc );
- for ( int i = 0; i < ngc; i++ ) {
- log.debug(tableTag + " chained contextual positioning class set offset[" + i + "]: " + csoa[i] );
- }
- }
- // read coverage table
- GlyphCoverageTable ct;
- if ( co > 0 ) {
- ct = readCoverageTable ( tableTag + " chained contextual positioning coverage", subtableOffset + co );
- } else {
- ct = null;
- }
- // read backtrack class definition table
- GlyphClassTable bcdt;
- if ( bcdo > 0 ) {
- bcdt = readClassDefTable ( tableTag + " contextual positioning backtrack class definition", subtableOffset + bcdo );
- } else {
- bcdt = null;
- }
- // read input class definition table
- GlyphClassTable icdt;
- if ( icdo > 0 ) {
- icdt = readClassDefTable ( tableTag + " contextual positioning input class definition", subtableOffset + icdo );
- } else {
- icdt = null;
- }
- // read lookahead class definition table
- GlyphClassTable lcdt;
- if ( lcdo > 0 ) {
- lcdt = readClassDefTable ( tableTag + " contextual positioning lookahead class definition", subtableOffset + lcdo );
- } else {
- lcdt = null;
- }
- // read rule sets
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet [ ngc ];
- String header = null;
- for ( int i = 0; i < ngc; i++ ) {
- int cso = csoa [ i ];
- GlyphTable.RuleSet rs;
- if ( cso > 0 ) {
- // seek to rule set [ i ]
- in.seekSet ( subtableOffset + cso );
- // read rule count
- int nr = in.readTTFUShort();
- // read rule offsets
- int[] roa = new int [ nr ];
- GlyphTable.Rule[] ra = new GlyphTable.Rule [ nr ];
- for ( int j = 0; j < nr; j++ ) {
- roa [ j ] = in.readTTFUShort();
- }
- // read glyph sequence rules
- for ( int j = 0; j < nr; j++ ) {
- GlyphTable.ChainedClassSequenceRule r;
- int ro = roa [ j ];
- if ( ro > 0 ) {
- // seek to rule [ j ]
- in.seekSet ( subtableOffset + cso + ro );
- // read backtrack glyph class count
- int nbc = in.readTTFUShort();
- // read backtrack glyph classes
- int[] backtrackClasses = new int [ nbc ];
- for ( int k = 0, nk = backtrackClasses.length; k < nk; k++ ) {
- backtrackClasses [ k ] = in.readTTFUShort();
- }
- // read input glyph class count
- int nic = in.readTTFUShort();
- // read input glyph classes
- int[] classes = new int [ nic - 1 ];
- for ( int k = 0, nk = classes.length; k < nk; k++ ) {
- classes [ k ] = in.readTTFUShort();
- }
- // read lookahead glyph class count
- int nlc = in.readTTFUShort();
- // read lookahead glyph classes
- int[] lookaheadClasses = new int [ nlc ];
- for ( int k = 0, nk = lookaheadClasses.length; k < nk; k++ ) {
- lookaheadClasses [ k ] = in.readTTFUShort();
- }
- // read rule lookup count
- int nl = in.readTTFUShort();
- // read rule lookups
- if (log.isDebugEnabled()) {
- header = tableTag + " contextual positioning lookups @rule[" + i + "][" + j + "]: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- r = new GlyphTable.ChainedClassSequenceRule ( lookups, nic, classes, backtrackClasses, lookaheadClasses );
- } else {
- r = null;
- }
- ra [ j ] = r;
- }
- rs = new GlyphTable.HomogeneousRuleSet ( ra );
- } else {
- rs = null;
- }
- rsa [ i ] = rs;
- }
- // store results
- seMapping = ct;
- seEntries.add ( icdt );
- seEntries.add ( bcdt );
- seEntries.add ( lcdt );
- seEntries.add ( Integer.valueOf ( ngc ) );
- seEntries.add ( rsa );
- }
-
- private void readChainedContextualPosTableFormat3(int lookupType, int lookupFlags, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read backtrack glyph count
- int nbg = in.readTTFUShort();
- // read backtrack glyph coverage offsets
- int[] bgcoa = new int [ nbg ];
- for ( int i = 0; i < nbg; i++ ) {
- bgcoa [ i ] = in.readTTFUShort();
- }
- // read input glyph count
- int nig = in.readTTFUShort();
- // read backtrack glyph coverage offsets
- int[] igcoa = new int [ nig ];
- for ( int i = 0; i < nig; i++ ) {
- igcoa [ i ] = in.readTTFUShort();
- }
- // read lookahead glyph count
- int nlg = in.readTTFUShort();
- // read backtrack glyph coverage offsets
- int[] lgcoa = new int [ nlg ];
- for ( int i = 0; i < nlg; i++ ) {
- lgcoa [ i ] = in.readTTFUShort();
- }
- // read positioning lookup count
- int nl = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " chained contextual positioning subtable format: " + subtableFormat + " (glyph sets)" );
- log.debug(tableTag + " chained contextual positioning backtrack glyph count: " + nbg );
- for ( int i = 0; i < nbg; i++ ) {
- log.debug(tableTag + " chained contextual positioning backtrack coverage table offset[" + i + "]: " + bgcoa[i] );
- }
- log.debug(tableTag + " chained contextual positioning input glyph count: " + nig );
- for ( int i = 0; i < nig; i++ ) {
- log.debug(tableTag + " chained contextual positioning input coverage table offset[" + i + "]: " + igcoa[i] );
- }
- log.debug(tableTag + " chained contextual positioning lookahead glyph count: " + nlg );
- for ( int i = 0; i < nlg; i++ ) {
- log.debug(tableTag + " chained contextual positioning lookahead coverage table offset[" + i + "]: " + lgcoa[i] );
- }
- log.debug(tableTag + " chained contextual positioning lookup count: " + nl );
- }
- // read backtrack coverage tables
- GlyphCoverageTable[] bgca = new GlyphCoverageTable[nbg];
- for ( int i = 0; i < nbg; i++ ) {
- int bgco = bgcoa [ i ];
- GlyphCoverageTable bgct;
- if ( bgco > 0 ) {
- bgct = readCoverageTable ( tableTag + " chained contextual positioning backtrack coverage[" + i + "]", subtableOffset + bgco );
- } else {
- bgct = null;
- }
- bgca[i] = bgct;
- }
- // read input coverage tables
- GlyphCoverageTable[] igca = new GlyphCoverageTable[nig];
- for ( int i = 0; i < nig; i++ ) {
- int igco = igcoa [ i ];
- GlyphCoverageTable igct;
- if ( igco > 0 ) {
- igct = readCoverageTable ( tableTag + " chained contextual positioning input coverage[" + i + "]", subtableOffset + igco );
- } else {
- igct = null;
- }
- igca[i] = igct;
- }
- // read lookahead coverage tables
- GlyphCoverageTable[] lgca = new GlyphCoverageTable[nlg];
- for ( int i = 0; i < nlg; i++ ) {
- int lgco = lgcoa [ i ];
- GlyphCoverageTable lgct;
- if ( lgco > 0 ) {
- lgct = readCoverageTable ( tableTag + " chained contextual positioning lookahead coverage[" + i + "]", subtableOffset + lgco );
- } else {
- lgct = null;
- }
- lgca[i] = lgct;
- }
- // read rule lookups
- String header = null;
- if (log.isDebugEnabled()) {
- header = tableTag + " chained contextual positioning lookups: ";
- }
- GlyphTable.RuleLookup[] lookups = readRuleLookups ( nl, header );
- // construct rule, rule set, and rule set array
- GlyphTable.Rule r = new GlyphTable.ChainedCoverageSequenceRule ( lookups, nig, igca, bgca, lgca );
- GlyphTable.RuleSet rs = new GlyphTable.HomogeneousRuleSet ( new GlyphTable.Rule[] {r} );
- GlyphTable.RuleSet[] rsa = new GlyphTable.RuleSet[] {rs};
- // store results
- assert ( igca != null ) && ( igca.length > 0 );
- seMapping = igca[0];
- seEntries.add ( rsa );
- }
-
- private int readChainedContextualPosTable(int lookupType, int lookupFlags, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read positioning subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readChainedContextualPosTableFormat1 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 2 ) {
- readChainedContextualPosTableFormat2 ( lookupType, lookupFlags, subtableOffset, sf );
- } else if ( sf == 3 ) {
- readChainedContextualPosTableFormat3 ( lookupType, lookupFlags, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported chained contextual positioning subtable format: " + sf );
- }
- return sf;
- }
-
- private void readExtensionPosTableFormat1(int lookupType, int lookupFlags, int lookupSequence, int subtableSequence, long subtableOffset, int subtableFormat) throws IOException {
- String tableTag = "GPOS";
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read extension lookup type
- int lt = in.readTTFUShort();
- // read extension offset
- long eo = in.readTTFULong();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " extension positioning subtable format: " + subtableFormat );
- log.debug(tableTag + " extension positioning lookup type: " + lt );
- log.debug(tableTag + " extension positioning lookup table offset: " + eo );
- }
- // read referenced subtable from extended offset
- readGPOSSubtable ( lt, lookupFlags, lookupSequence, subtableSequence, subtableOffset + eo );
- }
-
- private int readExtensionPosTable(int lookupType, int lookupFlags, int lookupSequence, int subtableSequence, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read positioning subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readExtensionPosTableFormat1 ( lookupType, lookupFlags, lookupSequence, subtableSequence, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported extension positioning subtable format: " + sf );
- }
- return sf;
- }
-
- private void readGPOSSubtable(int lookupType, int lookupFlags, int lookupSequence, int subtableSequence, long subtableOffset) throws IOException {
- initATSubState();
- int subtableFormat = -1;
- switch ( lookupType ) {
- case GPOSLookupType.SINGLE:
- subtableFormat = readSinglePosTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GPOSLookupType.PAIR:
- subtableFormat = readPairPosTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GPOSLookupType.CURSIVE:
- subtableFormat = readCursivePosTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GPOSLookupType.MARK_TO_BASE:
- subtableFormat = readMarkToBasePosTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GPOSLookupType.MARK_TO_LIGATURE:
- subtableFormat = readMarkToLigaturePosTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GPOSLookupType.MARK_TO_MARK:
- subtableFormat = readMarkToMarkPosTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GPOSLookupType.CONTEXTUAL:
- subtableFormat = readContextualPosTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GPOSLookupType.CHAINED_CONTEXTUAL:
- subtableFormat = readChainedContextualPosTable ( lookupType, lookupFlags, subtableOffset );
- break;
- case GPOSLookupType.EXTENSION:
- subtableFormat = readExtensionPosTable ( lookupType, lookupFlags, lookupSequence, subtableSequence, subtableOffset );
- break;
- default:
- break;
- }
- extractSESubState ( GlyphTable.GLYPH_TABLE_TYPE_POSITIONING, lookupType, lookupFlags, lookupSequence, subtableSequence, subtableFormat );
- resetATSubState();
- }
-
- private void readLookupTable(TTFTableName tableTag, int lookupSequence, long lookupTable) throws IOException {
- boolean isGSUB = tableTag.equals ( TTFTableName.GSUB );
- boolean isGPOS = tableTag.equals ( TTFTableName.GPOS );
- in.seekSet(lookupTable);
- // read lookup type
- int lt = in.readTTFUShort();
- // read lookup flags
- int lf = in.readTTFUShort();
- // read sub-table count
- int ns = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- String lts;
- if ( isGSUB ) {
- lts = GSUBLookupType.toString ( lt );
- } else if ( isGPOS ) {
- lts = GPOSLookupType.toString ( lt );
- } else {
- lts = "?";
- }
- log.debug(tableTag + " lookup table type: " + lt + " (" + lts + ")" );
- log.debug(tableTag + " lookup table flags: " + lf + " (" + LookupFlag.toString ( lf ) + ")" );
- log.debug(tableTag + " lookup table subtable count: " + ns );
- }
- // read subtable offsets
- int[] soa = new int[ns];
- for ( int i = 0; i < ns; i++ ) {
- int so = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " lookup table subtable offset: " + so );
- }
- soa[i] = so;
- }
- // read mark filtering set
- if ( ( lf & LookupFlag.USE_MARK_FILTERING_SET ) != 0 ) {
- // read mark filtering set
- int fs = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " lookup table mark filter set: " + fs );
- }
- }
- // read subtables
- for ( int i = 0; i < ns; i++ ) {
- int so = soa[i];
- if ( isGSUB ) {
- readGSUBSubtable ( lt, lf, lookupSequence, i, lookupTable + so );
- } else if ( isGPOS ) {
- readGPOSSubtable ( lt, lf, lookupSequence, i, lookupTable + so );
- }
- }
- }
-
- private void readLookupList(TTFTableName tableTag, long lookupList) throws IOException {
- in.seekSet(lookupList);
- // read lookup record count
- int nl = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " lookup list record count: " + nl );
- }
- if ( nl > 0 ) {
- int[] loa = new int[nl];
- // read lookup records
- for ( int i = 0, n = nl; i < n; i++ ) {
- int lo = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " lookup table offset: " + lo );
- }
- loa[i] = lo;
- }
- // read lookup tables
- for ( int i = 0, n = nl; i < n; i++ ) {
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " lookup index: " + i );
- }
- readLookupTable ( tableTag, i, lookupList + loa [ i ] );
- }
- }
- }
-
- /**
- * Read the common layout tables (used by GSUB and GPOS).
- * @param tableTag tag of table being read
- * @param scriptList offset to script list from beginning of font file
- * @param featureList offset to feature list from beginning of font file
- * @param lookupList offset to lookup list from beginning of font file
- * @throws IOException In case of a I/O problem
- */
- private void readCommonLayoutTables(TTFTableName tableTag, long scriptList, long featureList, long lookupList) throws IOException {
- if ( scriptList > 0 ) {
- readScriptList ( tableTag, scriptList );
- }
- if ( featureList > 0 ) {
- readFeatureList ( tableTag, featureList );
- }
- if ( lookupList > 0 ) {
- readLookupList ( tableTag, lookupList );
- }
- }
-
- private void readGDEFClassDefTable(TTFTableName tableTag, int lookupSequence, long subtableOffset) throws IOException {
- initATSubState();
- in.seekSet(subtableOffset);
- // subtable is a bare class definition table
- GlyphClassTable ct = readClassDefTable ( tableTag + " glyph class definition table", subtableOffset );
- // store results
- seMapping = ct;
- // extract subtable
- extractSESubState ( GlyphTable.GLYPH_TABLE_TYPE_DEFINITION, GDEFLookupType.GLYPH_CLASS, 0, lookupSequence, 0, 1 );
- resetATSubState();
- }
-
- private void readGDEFAttachmentTable(TTFTableName tableTag, int lookupSequence, long subtableOffset) throws IOException {
- initATSubState();
- in.seekSet(subtableOffset);
- // read coverage offset
- int co = in.readTTFUShort();
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " attachment point coverage table offset: " + co );
- }
- // read coverage table
- GlyphCoverageTable ct = readCoverageTable ( tableTag + " attachment point coverage", subtableOffset + co );
- // store results
- seMapping = ct;
- // extract subtable
- extractSESubState ( GlyphTable.GLYPH_TABLE_TYPE_DEFINITION, GDEFLookupType.ATTACHMENT_POINT, 0, lookupSequence, 0, 1 );
- resetATSubState();
- }
-
- private void readGDEFLigatureCaretTable(TTFTableName tableTag, int lookupSequence, long subtableOffset) throws IOException {
- initATSubState();
- in.seekSet(subtableOffset);
- // read coverage offset
- int co = in.readTTFUShort();
- // read ligature glyph count
- int nl = in.readTTFUShort();
- // read ligature glyph table offsets
- int[] lgto = new int [ nl ];
- for ( int i = 0; i < nl; i++ ) {
- lgto [ i ] = in.readTTFUShort();
- }
-
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " ligature caret coverage table offset: " + co );
- log.debug(tableTag + " ligature caret ligature glyph count: " + nl );
- for ( int i = 0; i < nl; i++ ) {
- log.debug(tableTag + " ligature glyph table offset[" + i + "]: " + lgto[i] );
- }
- }
- // read coverage table
- GlyphCoverageTable ct = readCoverageTable ( tableTag + " ligature caret coverage", subtableOffset + co );
- // store results
- seMapping = ct;
- // extract subtable
- extractSESubState ( GlyphTable.GLYPH_TABLE_TYPE_DEFINITION, GDEFLookupType.LIGATURE_CARET, 0, lookupSequence, 0, 1 );
- resetATSubState();
- }
-
- private void readGDEFMarkAttachmentTable(TTFTableName tableTag, int lookupSequence, long subtableOffset) throws IOException {
- initATSubState();
- in.seekSet(subtableOffset);
- // subtable is a bare class definition table
- GlyphClassTable ct = readClassDefTable ( tableTag + " glyph class definition table", subtableOffset );
- // store results
- seMapping = ct;
- // extract subtable
- extractSESubState ( GlyphTable.GLYPH_TABLE_TYPE_DEFINITION, GDEFLookupType.MARK_ATTACHMENT, 0, lookupSequence, 0, 1 );
- resetATSubState();
- }
-
- private void readGDEFMarkGlyphsTableFormat1(TTFTableName tableTag, int lookupSequence, long subtableOffset, int subtableFormat) throws IOException {
- initATSubState();
- in.seekSet(subtableOffset);
- // skip over format (already known)
- in.skip ( 2 );
- // read mark set class count
- int nmc = in.readTTFUShort();
- long[] mso = new long [ nmc ];
- // read mark set coverage offsets
- for ( int i = 0; i < nmc; i++ ) {
- mso [ i ] = in.readTTFULong();
- }
- // dump info if debugging
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " mark set subtable format: " + subtableFormat + " (glyph sets)" );
- log.debug(tableTag + " mark set class count: " + nmc );
- for ( int i = 0; i < nmc; i++ ) {
- log.debug(tableTag + " mark set coverage table offset[" + i + "]: " + mso[i] );
- }
- }
- // read mark set coverage tables, one per class
- GlyphCoverageTable[] msca = new GlyphCoverageTable[nmc];
- for ( int i = 0; i < nmc; i++ ) {
- msca[i] = readCoverageTable ( tableTag + " mark set coverage[" + i + "]", subtableOffset + mso[i] );
- }
- // create combined class table from per-class coverage tables
- GlyphClassTable ct = GlyphClassTable.createClassTable ( Arrays.asList ( msca ) );
- // store results
- seMapping = ct;
- // extract subtable
- extractSESubState ( GlyphTable.GLYPH_TABLE_TYPE_DEFINITION, GDEFLookupType.MARK_ATTACHMENT, 0, lookupSequence, 0, 1 );
- resetATSubState();
- }
-
- private void readGDEFMarkGlyphsTable(TTFTableName tableTag, int lookupSequence, long subtableOffset) throws IOException {
- in.seekSet(subtableOffset);
- // read mark set subtable format
- int sf = in.readTTFUShort();
- if ( sf == 1 ) {
- readGDEFMarkGlyphsTableFormat1 ( tableTag, lookupSequence, subtableOffset, sf );
- } else {
- throw new AdvancedTypographicTableFormatException ( "unsupported mark glyph sets subtable format: " + sf );
- }
- }
-
- /**
- * Read the GDEF table.
- * @throws IOException In case of a I/O problem
- */
- private void readGDEF() throws IOException {
- TTFTableName tableTag = TTFTableName.GDEF;
- // Initialize temporary state
- initATState();
- // Read glyph definition (GDEF) table
- TTFDirTabEntry dirTab = ttf.getDirectoryEntry( tableTag );
- if ( gdef != null ) {
- if (log.isDebugEnabled()) {
- log.debug(tableTag + ": ignoring duplicate table");
- }
- } else if (dirTab != null) {
- ttf.seekTab(in, tableTag, 0);
- long version = in.readTTFULong();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " version: " + ( version / 65536 ) + "." + ( version % 65536 ));
- }
- // glyph class definition table offset (may be null)
- int cdo = in.readTTFUShort();
- // attach point list offset (may be null)
- int apo = in.readTTFUShort();
- // ligature caret list offset (may be null)
- int lco = in.readTTFUShort();
- // mark attach class definition table offset (may be null)
- int mao = in.readTTFUShort();
- // mark glyph sets definition table offset (may be null)
- int mgo;
- if ( version >= 0x00010002 ) {
- mgo = in.readTTFUShort();
- } else {
- mgo = 0;
- }
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " glyph class definition table offset: " + cdo );
- log.debug(tableTag + " attachment point list offset: " + apo );
- log.debug(tableTag + " ligature caret list offset: " + lco );
- log.debug(tableTag + " mark attachment class definition table offset: " + mao );
- log.debug(tableTag + " mark glyph set definitions table offset: " + mgo );
- }
- // initialize subtable sequence number
- int seqno = 0;
- // obtain offset to start of gdef table
- long to = dirTab.getOffset();
- // (optionally) read glyph class definition subtable
- if ( cdo != 0 ) {
- readGDEFClassDefTable ( tableTag, seqno++, to + cdo );
- }
- // (optionally) read glyph attachment point subtable
- if ( apo != 0 ) {
- readGDEFAttachmentTable ( tableTag, seqno++, to + apo );
- }
- // (optionally) read ligature caret subtable
- if ( lco != 0 ) {
- readGDEFLigatureCaretTable ( tableTag, seqno++, to + lco );
- }
- // (optionally) read mark attachment class subtable
- if ( mao != 0 ) {
- readGDEFMarkAttachmentTable ( tableTag, seqno++, to + mao );
- }
- // (optionally) read mark glyph sets subtable
- if ( mgo != 0 ) {
- readGDEFMarkGlyphsTable ( tableTag, seqno++, to + mgo );
- }
- GlyphDefinitionTable gdef;
- if ( ( gdef = constructGDEF() ) != null ) {
- this.gdef = gdef;
- }
- }
- }
-
- /**
- * Read the GSUB table.
- * @throws IOException In case of a I/O problem
- */
- private void readGSUB() throws IOException {
- TTFTableName tableTag = TTFTableName.GSUB;
- // Initialize temporary state
- initATState();
- // Read glyph substitution (GSUB) table
- TTFDirTabEntry dirTab = ttf.getDirectoryEntry ( tableTag );
- if ( gpos != null ) {
- if (log.isDebugEnabled()) {
- log.debug(tableTag + ": ignoring duplicate table");
- }
- } else if (dirTab != null) {
- ttf.seekTab(in, tableTag, 0);
- int version = in.readTTFLong();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " version: " + ( version / 65536 ) + "." + ( version % 65536 ));
- }
- int slo = in.readTTFUShort();
- int flo = in.readTTFUShort();
- int llo = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " script list offset: " + slo );
- log.debug(tableTag + " feature list offset: " + flo );
- log.debug(tableTag + " lookup list offset: " + llo );
- }
- long to = dirTab.getOffset();
- readCommonLayoutTables ( tableTag, to + slo, to + flo, to + llo );
- GlyphSubstitutionTable gsub;
- if ( ( gsub = constructGSUB() ) != null ) {
- this.gsub = gsub;
- }
- }
- }
-
- /**
- * Read the GPOS table.
- * @throws IOException In case of a I/O problem
- */
- private void readGPOS() throws IOException {
- TTFTableName tableTag = TTFTableName.GPOS;
- // Initialize temporary state
- initATState();
- // Read glyph positioning (GPOS) table
- TTFDirTabEntry dirTab = ttf.getDirectoryEntry ( tableTag );
- if ( gpos != null ) {
- if (log.isDebugEnabled()) {
- log.debug(tableTag + ": ignoring duplicate table");
- }
- } else if (dirTab != null) {
- ttf.seekTab(in, tableTag, 0);
- int version = in.readTTFLong();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " version: " + ( version / 65536 ) + "." + ( version % 65536 ));
- }
- int slo = in.readTTFUShort();
- int flo = in.readTTFUShort();
- int llo = in.readTTFUShort();
- if (log.isDebugEnabled()) {
- log.debug(tableTag + " script list offset: " + slo );
- log.debug(tableTag + " feature list offset: " + flo );
- log.debug(tableTag + " lookup list offset: " + llo );
- }
- long to = dirTab.getOffset();
- readCommonLayoutTables ( tableTag, to + slo, to + flo, to + llo );
- GlyphPositioningTable gpos;
- if ( ( gpos = constructGPOS() ) != null ) {
- this.gpos = gpos;
- }
- }
- }
-
- /**
- * Construct the (internal representation of the) GDEF table based on previously
- * parsed state.
- * @returns glyph definition table or null if insufficient or invalid state
- */
- private GlyphDefinitionTable constructGDEF() {
- GlyphDefinitionTable gdef = null;
- List subtables;
- if ( ( subtables = constructGDEFSubtables() ) != null ) {
- if ( subtables.size() > 0 ) {
- gdef = new GlyphDefinitionTable ( subtables );
- }
- }
- resetATState();
- return gdef;
- }
-
- /**
- * Construct the (internal representation of the) GSUB table based on previously
- * parsed state.
- * @returns glyph substitution table or null if insufficient or invalid state
- */
- private GlyphSubstitutionTable constructGSUB() {
- GlyphSubstitutionTable gsub = null;
- Map lookups;
- if ( ( lookups = constructLookups() ) != null ) {
- List subtables;
- if ( ( subtables = constructGSUBSubtables() ) != null ) {
- if ( ( lookups.size() > 0 ) && ( subtables.size() > 0 ) ) {
- gsub = new GlyphSubstitutionTable ( gdef, lookups, subtables );
- }
- }
- }
- resetATState();
- return gsub;
- }
-
- /**
- * Construct the (internal representation of the) GPOS table based on previously
- * parsed state.
- * @returns glyph positioning table or null if insufficient or invalid state
- */
- private GlyphPositioningTable constructGPOS() {
- GlyphPositioningTable gpos = null;
- Map lookups;
- if ( ( lookups = constructLookups() ) != null ) {
- List subtables;
- if ( ( subtables = constructGPOSSubtables() ) != null ) {
- if ( ( lookups.size() > 0 ) && ( subtables.size() > 0 ) ) {
- gpos = new GlyphPositioningTable ( gdef, lookups, subtables );
- }
- }
- }
- resetATState();
- return gpos;
- }
-
- private void constructLookupsFeature ( Map lookups, String st, String lt, String fid ) {
- Object[] fp = (Object[]) seFeatures.get ( fid );
- if ( fp != null ) {
- assert fp.length == 2;
- String ft = (String) fp[0]; // feature tag
- List/*<String>*/ lul = (List) fp[1]; // list of lookup table ids
- if ( ( ft != null ) && ( lul != null ) && ( lul.size() > 0 ) ) {
- GlyphTable.LookupSpec ls = new GlyphTable.LookupSpec ( st, lt, ft );
- lookups.put ( ls, lul );
- }
- }
- }
-
- private void constructLookupsFeatures ( Map lookups, String st, String lt, List/*<String>*/ fids ) {
- for ( Iterator fit = fids.iterator(); fit.hasNext();) {
- String fid = (String) fit.next();
- constructLookupsFeature ( lookups, st, lt, fid );
- }
- }
-
- private void constructLookupsLanguage ( Map lookups, String st, String lt, Map/*<String,Object[2]>*/ languages ) {
- Object[] lp = (Object[]) languages.get ( lt );
- if ( lp != null ) {
- assert lp.length == 2;
- if ( lp[0] != null ) { // required feature id
- constructLookupsFeature ( lookups, st, lt, (String) lp[0] );
- }
- if ( lp[1] != null ) { // non-required features ids
- constructLookupsFeatures ( lookups, st, lt, (List) lp[1] );
- }
- }
- }
-
- private void constructLookupsLanguages ( Map lookups, String st, List/*<String>*/ ll, Map/*<String,Object[2]>*/ languages ) {
- for ( Iterator lit = ll.iterator(); lit.hasNext();) {
- String lt = (String) lit.next();
- constructLookupsLanguage ( lookups, st, lt, languages );
- }
- }
-
- private Map constructLookups() {
- Map/*<GlyphTable.LookupSpec,List<String>>*/ lookups = new java.util.LinkedHashMap();
- for ( Iterator sit = seScripts.keySet().iterator(); sit.hasNext();) {
- String st = (String) sit.next();
- Object[] sp = (Object[]) seScripts.get ( st );
- if ( sp != null ) {
- assert sp.length == 3;
- Map/*<String,Object[2]>*/ languages = (Map) sp[2];
- if ( sp[0] != null ) { // default language
- constructLookupsLanguage ( lookups, st, (String) sp[0], languages );
- }
- if ( sp[1] != null ) { // non-default languages
- constructLookupsLanguages ( lookups, st, (List) sp[1], languages );
- }
- }
- }
- return lookups;
- }
-
- private List constructGDEFSubtables() {
- List/*<GlyphDefinitionSubtable>*/ subtables = new java.util.ArrayList();
- if ( seSubtables != null ) {
- for ( Iterator it = seSubtables.iterator(); it.hasNext();) {
- Object[] stp = (Object[]) it.next();
- GlyphSubtable st;
- if ( ( st = constructGDEFSubtable ( stp ) ) != null ) {
- subtables.add ( st );
- }
- }
- }
- return subtables;
- }
-
- private GlyphSubtable constructGDEFSubtable ( Object[] stp ) {
- GlyphSubtable st = null;
- assert ( stp != null ) && ( stp.length == 8 );
- Integer tt = (Integer) stp[0]; // table type
- Integer lt = (Integer) stp[1]; // lookup type
- Integer ln = (Integer) stp[2]; // lookup sequence number
- Integer lf = (Integer) stp[3]; // lookup flags
- Integer sn = (Integer) stp[4]; // subtable sequence number
- Integer sf = (Integer) stp[5]; // subtable format
- GlyphMappingTable mapping = (GlyphMappingTable) stp[6];
- List entries = (List) stp[7];
- if ( tt.intValue() == GlyphTable.GLYPH_TABLE_TYPE_DEFINITION ) {
- int type = GDEFLookupType.getSubtableType ( lt.intValue() );
- String lid = "lu" + ln.intValue();
- int sequence = sn.intValue();
- int flags = lf.intValue();
- int format = sf.intValue();
- st = GlyphDefinitionTable.createSubtable ( type, lid, sequence, flags, format, mapping, entries );
- }
- return st;
- }
-
- private List constructGSUBSubtables() {
- List/*<GlyphSubtable>*/ subtables = new java.util.ArrayList();
- if ( seSubtables != null ) {
- for ( Iterator it = seSubtables.iterator(); it.hasNext();) {
- Object[] stp = (Object[]) it.next();
- GlyphSubtable st;
- if ( ( st = constructGSUBSubtable ( stp ) ) != null ) {
- subtables.add ( st );
- }
- }
- }
- return subtables;
- }
-
- private GlyphSubtable constructGSUBSubtable ( Object[] stp ) {
- GlyphSubtable st = null;
- assert ( stp != null ) && ( stp.length == 8 );
- Integer tt = (Integer) stp[0]; // table type
- Integer lt = (Integer) stp[1]; // lookup type
- Integer ln = (Integer) stp[2]; // lookup sequence number
- Integer lf = (Integer) stp[3]; // lookup flags
- Integer sn = (Integer) stp[4]; // subtable sequence number
- Integer sf = (Integer) stp[5]; // subtable format
- GlyphCoverageTable coverage = (GlyphCoverageTable) stp[6];
- List entries = (List) stp[7];
- if ( tt.intValue() == GlyphTable.GLYPH_TABLE_TYPE_SUBSTITUTION ) {
- int type = GSUBLookupType.getSubtableType ( lt.intValue() );
- String lid = "lu" + ln.intValue();
- int sequence = sn.intValue();
- int flags = lf.intValue();
- int format = sf.intValue();
- st = GlyphSubstitutionTable.createSubtable ( type, lid, sequence, flags, format, coverage, entries );
- }
- return st;
- }
-
- private List constructGPOSSubtables() {
- List/*<GlyphSubtable>*/ subtables = new java.util.ArrayList();
- if ( seSubtables != null ) {
- for ( Iterator it = seSubtables.iterator(); it.hasNext();) {
- Object[] stp = (Object[]) it.next();
- GlyphSubtable st;
- if ( ( st = constructGPOSSubtable ( stp ) ) != null ) {
- subtables.add ( st );
- }
- }
- }
- return subtables;
- }
-
- private GlyphSubtable constructGPOSSubtable ( Object[] stp ) {
- GlyphSubtable st = null;
- assert ( stp != null ) && ( stp.length == 8 );
- Integer tt = (Integer) stp[0]; // table type
- Integer lt = (Integer) stp[1]; // lookup type
- Integer ln = (Integer) stp[2]; // lookup sequence number
- Integer lf = (Integer) stp[3]; // lookup flags
- Integer sn = (Integer) stp[4]; // subtable sequence number
- Integer sf = (Integer) stp[5]; // subtable format
- GlyphCoverageTable coverage = (GlyphCoverageTable) stp[6];
- List entries = (List) stp[7];
- if ( tt.intValue() == GlyphTable.GLYPH_TABLE_TYPE_POSITIONING ) {
- int type = GSUBLookupType.getSubtableType ( lt.intValue() );
- String lid = "lu" + ln.intValue();
- int sequence = sn.intValue();
- int flags = lf.intValue();
- int format = sf.intValue();
- st = GlyphPositioningTable.createSubtable ( type, lid, sequence, flags, format, coverage, entries );
- }
- return st;
- }
-
- private void initATState() {
- seScripts = new java.util.LinkedHashMap();
- seLanguages = new java.util.LinkedHashMap();
- seFeatures = new java.util.LinkedHashMap();
- seSubtables = new java.util.ArrayList();
- resetATSubState();
- }
-
- private void resetATState() {
- seScripts = null;
- seLanguages = null;
- seFeatures = null;
- seSubtables = null;
- resetATSubState();
- }
-
- private void initATSubState() {
- seMapping = null;
- seEntries = new java.util.ArrayList();
- }
-
- private void extractSESubState ( int tableType, int lookupType, int lookupFlags, int lookupSequence, int subtableSequence, int subtableFormat ) {
- if ( seEntries != null ) {
- if ( ( tableType == GlyphTable.GLYPH_TABLE_TYPE_DEFINITION ) || ( seEntries.size() > 0 ) ) {
- if ( seSubtables != null ) {
- Integer tt = Integer.valueOf ( tableType );
- Integer lt = Integer.valueOf ( lookupType );
- Integer ln = Integer.valueOf ( lookupSequence );
- Integer lf = Integer.valueOf ( lookupFlags );
- Integer sn = Integer.valueOf ( subtableSequence );
- Integer sf = Integer.valueOf ( subtableFormat );
- seSubtables.add ( new Object[] { tt, lt, ln, lf, sn, sf, seMapping, seEntries } );
- }
- }
- }
- }
-
- private void resetATSubState() {
- seMapping = null;
- seEntries = null;
- }
-
- private void resetATStateAll() {
- resetATState();
- gdef = null;
- gsub = null;
- gpos = null;
- }
-
- /** helper method for formatting an integer array for output */
- private String toString ( int[] ia ) {
- StringBuffer sb = new StringBuffer();
- if ( ( ia == null ) || ( ia.length == 0 ) ) {
- sb.append ( '-' );
- } else {
- boolean first = true;
- for ( int i = 0; i < ia.length; i++ ) {
- if ( ! first ) {
- sb.append ( ' ' );
- } else {
- first = false;
- }
- sb.append ( ia[i] );
- }
- }
- return sb.toString();
- }
-
- }
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