mirror of
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优化字体处理效率
This commit is contained in:
parent
1e5ea697ad
commit
fa3fc01080
@ -1,17 +1,21 @@
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package io.legado.app.model.analyzeRule;
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import org.apache.commons.lang3.tuple.Pair;
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import org.apache.commons.lang3.tuple.Triple;
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import android.util.Log;
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import java.nio.charset.Charset;
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import java.nio.charset.StandardCharsets;
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import java.util.ArrayList;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.util.HashMap;
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import java.util.Map;
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import java.nio.charset.StandardCharsets;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import java.util.Objects;
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import java.util.concurrent.ConcurrentHashMap;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.TimeUnit;
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@SuppressWarnings({"FieldCanBeLocal", "unused"})
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@SuppressWarnings({"FieldCanBeLocal", "StatementWithEmptyBody", "unused"})
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public class QueryTTF {
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private static class Header {
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public int majorVersion;
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@ -129,7 +133,7 @@ public class QueryTTF {
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public int length;
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public int language;
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public int numGroups;
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public List<Triple<Integer, Integer, Integer>> groups;
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public List<int[]> groups;
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}
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private static class GlyfLayout {
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@ -147,103 +151,313 @@ public class QueryTTF {
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}
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private static class ByteArrayReader {
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public int index;
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public byte[] buffer;
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private final byte[] buffer;
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public final ByteBuffer byteBuffer;
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public ByteArrayReader(byte[] buffer, int index) {
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this.buffer = buffer;
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this.index = index;
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this.byteBuffer = ByteBuffer.wrap(buffer);
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this.byteBuffer.order(ByteOrder.BIG_ENDIAN); // 设置为大端模式
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this.byteBuffer.position(index); // 设置起始索引
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}
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public long ReadUIntX(long len) {
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long result = 0;
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for (long i = 0; i < len; ++i) {
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result <<= 8;
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result |= buffer[index++] & 0xFF;
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}
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return result;
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public void position(int index) {
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byteBuffer.position(index); // 设置起始索引
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}
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public int position() {
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return byteBuffer.position();
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}
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public long ReadUInt64() {
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return ReadUIntX(8);
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return byteBuffer.getLong();
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}
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public int ReadUInt32() {
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return (int) ReadUIntX(4);
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return byteBuffer.getInt();
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}
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public int ReadInt32() {
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return byteBuffer.getInt();
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}
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public int ReadUInt16() {
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return (int) ReadUIntX(2);
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return byteBuffer.getShort() & 0xFFFF;
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}
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public short ReadInt16() {
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return (short) ReadUIntX(2);
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return byteBuffer.getShort();
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}
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public short ReadUInt8() {
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return (short) ReadUIntX(1);
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return (short) (byteBuffer.get() & 0xFF);
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}
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public String ReadStrings(int len, Charset charset) {
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byte[] result = len > 0 ? new byte[len] : null;
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for (int i = 0; i < len; ++i) result[i] = buffer[index++];
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return new String(result, charset);
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public byte ReadInt8() {
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return byteBuffer.get();
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}
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public byte GetByte() {
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return buffer[index++];
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}
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public byte[] GetBytes(int len) {
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byte[] result = len > 0 ? new byte[len] : null;
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for (int i = 0; i < len; ++i) result[i] = buffer[index++];
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public byte[] ReadByteArray(int len) {
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if (len < 0) throw new IllegalArgumentException("Length must not be negative");
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byte[] result = new byte[len];
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byteBuffer.get(result);
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return result;
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}
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public int[] GetUInt16Array(int len) {
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int[] result = len > 0 ? new int[len] : null;
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for (int i = 0; i < len; ++i) result[i] = ReadUInt16();
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public short[] ReadInt16Array(int len) {
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if (len < 0) throw new IllegalArgumentException("Length must not be negative");
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var result = new short[len];
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for (int i = 0; i < len; ++i) result[i] = byteBuffer.getShort();
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return result;
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}
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public short[] GetInt16Array(int len) {
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short[] result = len > 0 ? new short[len] : null;
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for (int i = 0; i < len; ++i) result[i] = ReadInt16();
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public int[] ReadUInt16Array(int len) {
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if (len < 0) throw new IllegalArgumentException("Length must not be negative");
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var result = new int[len];
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for (int i = 0; i < len; ++i) result[i] = byteBuffer.getShort() & 0xFFFF;
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return result;
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}
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}
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private final ByteArrayReader fontReader;
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private final Header fileHeader = new Header();
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private final List<Directory> directorys = new LinkedList<>();
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private final Map<String, Directory> directorys = new HashMap<>();
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private final NameLayout name = new NameLayout();
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private final HeadLayout head = new HeadLayout();
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private final MaxpLayout maxp = new MaxpLayout();
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private final List<Integer> loca = new LinkedList<>();
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private final CmapLayout Cmap = new CmapLayout();
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private final List<String> glyf = new LinkedList<>();
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@SuppressWarnings("unchecked")
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private final Pair<Integer, Integer>[] pps = new Pair[]{
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Pair.of(3, 10),
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Pair.of(0, 4),
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Pair.of(3, 1),
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Pair.of(1, 0),
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Pair.of(0, 3),
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Pair.of(0, 1)
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private final ConcurrentHashMap<Integer, String> glyf = new ConcurrentHashMap<>();
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private final int[][] pps = new int[][]{
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{3, 10},
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{0, 4},
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{3, 1},
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{1, 0},
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{0, 3},
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{0, 1}
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};
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public final Map<Integer, String> unicodeToGlyph = new HashMap<>();
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public final Map<String, Integer> glyphToUnicode = new HashMap<>();
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public final Map<Integer, Integer> unicodeToGlyphIndex = new HashMap<>();
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private void readNameTable(byte[] buffer) {
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var dataTable = Objects.requireNonNull(directorys.get("name"));
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var reader = new ByteArrayReader(buffer, dataTable.offset);
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name.format = reader.ReadUInt16();
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name.count = reader.ReadUInt16();
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name.stringOffset = reader.ReadUInt16();
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for (int i = 0; i < name.count; ++i) {
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NameRecord record = new NameRecord();
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record.platformID = reader.ReadUInt16();
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record.encodingID = reader.ReadUInt16();
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record.languageID = reader.ReadUInt16();
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record.nameID = reader.ReadUInt16();
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record.length = reader.ReadUInt16();
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record.offset = reader.ReadUInt16();
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name.records.add(record);
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}
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}
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private void readHeadTable(byte[] buffer) {
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var dataTable = Objects.requireNonNull(directorys.get("head"));
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var reader = new ByteArrayReader(buffer, dataTable.offset);
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head.majorVersion = reader.ReadUInt16();
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head.minorVersion = reader.ReadUInt16();
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head.fontRevision = reader.ReadUInt32();
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head.checkSumAdjustment = reader.ReadUInt32();
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head.magicNumber = reader.ReadUInt32();
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head.flags = reader.ReadUInt16();
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head.unitsPerEm = reader.ReadUInt16();
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head.created = reader.ReadUInt64();
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head.modified = reader.ReadUInt64();
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head.xMin = reader.ReadInt16();
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head.yMin = reader.ReadInt16();
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head.xMax = reader.ReadInt16();
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head.yMax = reader.ReadInt16();
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head.macStyle = reader.ReadUInt16();
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head.lowestRecPPEM = reader.ReadUInt16();
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head.fontDirectionHint = reader.ReadInt16();
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head.indexToLocFormat = reader.ReadInt16();
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head.glyphDataFormat = reader.ReadInt16();
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}
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private void readCmapTable(byte[] buffer) {
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var dataTable = Objects.requireNonNull(directorys.get("cmap"));
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var reader = new ByteArrayReader(buffer, dataTable.offset);
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Cmap.version = reader.ReadUInt16();
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Cmap.numTables = reader.ReadUInt16();
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for (int i = 0; i < Cmap.numTables; ++i) {
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CmapRecord record = new CmapRecord();
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record.platformID = reader.ReadUInt16();
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record.encodingID = reader.ReadUInt16();
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record.offset = reader.ReadUInt32();
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Cmap.records.add(record);
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}
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for (int i = 0; i < Cmap.numTables; ++i) {
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int fmtOffset = Cmap.records.get(i).offset;
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reader.position(dataTable.offset + fmtOffset);
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int EndIndex = reader.position();
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int format = reader.ReadUInt16();
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if (Cmap.tables.containsKey(fmtOffset)) continue;
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if (format == 0) {
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CmapFormat f = new CmapFormat();
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f.format = format;
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f.length = reader.ReadUInt16();
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f.language = reader.ReadUInt16();
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f.glyphIdArray = reader.ReadByteArray(f.length - 6);
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Cmap.tables.put(fmtOffset, f);
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} else if (format == 4) {
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CmapFormat4 f = new CmapFormat4();
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f.format = format;
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f.length = reader.ReadUInt16();
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f.language = reader.ReadUInt16();
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f.segCountX2 = reader.ReadUInt16();
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int segCount = f.segCountX2 >> 1;
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f.searchRange = reader.ReadUInt16();
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f.entrySelector = reader.ReadUInt16();
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f.rangeShift = reader.ReadUInt16();
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f.endCode = reader.ReadUInt16Array(segCount);
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f.reservedPad = reader.ReadUInt16();
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f.startCode = reader.ReadUInt16Array(segCount);
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f.idDelta = reader.ReadInt16Array(segCount);
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f.idRangeOffset = reader.ReadUInt16Array(segCount);
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f.glyphIdArray = reader.ReadUInt16Array((EndIndex + f.length - reader.position()) >> 1);
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Cmap.tables.put(fmtOffset, f);
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} else if (format == 6) {
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CmapFormat6 f = new CmapFormat6();
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f.format = format;
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f.length = reader.ReadUInt16();
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f.language = reader.ReadUInt16();
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f.firstCode = reader.ReadUInt16();
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f.entryCount = reader.ReadUInt16();
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f.glyphIdArray = reader.ReadUInt16Array(f.entryCount);
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Cmap.tables.put(fmtOffset, f);
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} else if (format == 12) {
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CmapFormat12 f = new CmapFormat12();
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f.format = format;
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f.reserved = reader.ReadUInt16();
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f.length = reader.ReadUInt32();
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f.language = reader.ReadUInt32();
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f.numGroups = reader.ReadUInt32();
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f.groups = new LinkedList<>();
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for (int n = 0; n < f.numGroups; ++n) {
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f.groups.add(new int[]{reader.ReadUInt32(), reader.ReadUInt32(), reader.ReadUInt32()});
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}
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Cmap.tables.put(fmtOffset, f);
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}
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}
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}
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private void readLocaTable(byte[] buffer) {
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var dataTable = Objects.requireNonNull(directorys.get("loca"));
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var reader = new ByteArrayReader(buffer, dataTable.offset);
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var locaTableSize = dataTable.length;
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if (head.indexToLocFormat == 0) {
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for (long i = 0; i < locaTableSize; i += 2) loca.add(reader.ReadUInt16());
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} else {
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for (long i = 0; i < locaTableSize; i += 4) loca.add(reader.ReadUInt32());
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}
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}
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private void readMaxpTable(byte[] buffer) {
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var dataTable = Objects.requireNonNull(directorys.get("maxp"));
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var reader = new ByteArrayReader(buffer, dataTable.offset);
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maxp.majorVersion = reader.ReadUInt16();
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maxp.minorVersion = reader.ReadUInt16();
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maxp.numGlyphs = reader.ReadUInt16();
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maxp.maxPoints = reader.ReadUInt16();
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maxp.maxContours = reader.ReadUInt16();
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maxp.maxCompositePoints = reader.ReadUInt16();
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maxp.maxCompositeContours = reader.ReadUInt16();
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maxp.maxZones = reader.ReadUInt16();
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maxp.maxTwilightPoints = reader.ReadUInt16();
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maxp.maxStorage = reader.ReadUInt16();
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maxp.maxFunctionDefs = reader.ReadUInt16();
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maxp.maxInstructionDefs = reader.ReadUInt16();
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maxp.maxStackElements = reader.ReadUInt16();
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maxp.maxSizeOfInstructions = reader.ReadUInt16();
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maxp.maxComponentElements = reader.ReadUInt16();
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maxp.maxComponentDepth = reader.ReadUInt16();
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}
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private void readGlyfTable(byte[] buffer) {
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var dataTable = Objects.requireNonNull(directorys.get("glyf"));
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int glyfCount = maxp.numGlyphs;
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ExecutorService executor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
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for (int i = 0; i < glyfCount; i++) {
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final int index = i;
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executor.submit(() -> {
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var reader = new ByteArrayReader(buffer, dataTable.offset + loca.get(index));
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int glyfNextIndex = index + 1 < glyfCount ? (dataTable.offset + loca.get(index + 1)) : (dataTable.offset + dataTable.length);
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byte[] glyph;
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short numberOfContours = reader.ReadInt16();
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if (numberOfContours > 0) {
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short g_xMin = reader.ReadInt16();
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short g_yMin = reader.ReadInt16();
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short g_xMax = reader.ReadInt16();
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short g_yMax = reader.ReadInt16();
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int[] endPtsOfContours = reader.ReadUInt16Array(numberOfContours);
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int instructionLength = reader.ReadUInt16();
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var instructions = reader.ReadByteArray(instructionLength);
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int flagLength = endPtsOfContours[endPtsOfContours.length - 1] + 1;
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// 获取轮廓点描述标志
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var flags = new byte[flagLength];
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for (int n = 0; n < flagLength; ++n) {
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flags[n] = reader.ReadInt8();
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if ((flags[n] & 0x08) != 0x00) {
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for (int m = reader.ReadUInt8(); m > 0; --m) {
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flags[++n] = flags[n - 1];
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}
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}
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}
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// 获取轮廓点描述x,y相对值
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ByteBuffer xyCoordinatesBuffer = ByteBuffer.allocate(flagLength * 4);
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// 获取轮廓点描述x轴相对值
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for (int n = 0; n < flagLength; ++n) {
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short same = (short) ((flags[n] & 0x10) != 0 ? 1 : -1);
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if ((flags[n] & 0x02) != 0) {
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xyCoordinatesBuffer.putShort((short) (same * reader.ReadUInt8()));
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} else {
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xyCoordinatesBuffer.putShort(same == 1 ? (short) 0 : reader.ReadInt16());
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}
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}
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// 获取轮廓点描述y轴相对值
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for (int n = 0; n < flagLength; ++n) {
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short same = (short) ((flags[n] & 0x20) != 0 ? 1 : -1);
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if ((flags[n] & 0x04) != 0) {
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xyCoordinatesBuffer.putShort((short) (same * reader.ReadUInt8()));
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} else {
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xyCoordinatesBuffer.putShort(same == 1 ? (short) 0 : reader.ReadInt16());
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}
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}
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// 保存轮廓点描述x,y相对值ByteArray
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glyph = xyCoordinatesBuffer.array();
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} else {
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// 复合字体未做详细处理
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glyph = reader.ReadByteArray(glyfNextIndex - (reader.position() - 2));
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}
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glyf.put(index, getHexFromBytes(glyph));
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});
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}
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executor.shutdown();
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try {
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boolean b = executor.awaitTermination(Long.MAX_VALUE, TimeUnit.SECONDS);
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} catch (InterruptedException e) {
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Log.e("queryTTF", "glyf表解析出错: " + e);
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}
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}
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/**
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* 构造函数
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*
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* @param buffer 传入TTF字体二进制数组
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*/
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public QueryTTF(byte[] buffer) {
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fontReader = new ByteArrayReader(buffer, 0);
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var fontReader = new ByteArrayReader(buffer, 0);
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Log.i("[queryTTF]", "读文件头");
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// 获取文件头
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fileHeader.majorVersion = fontReader.ReadUInt16();
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fileHeader.minorVersion = fontReader.ReadUInt16();
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@ -254,187 +468,29 @@ public class QueryTTF {
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// 获取目录
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for (int i = 0; i < fileHeader.numOfTables; ++i) {
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Directory d = new Directory();
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d.tag = fontReader.ReadStrings(4, StandardCharsets.US_ASCII);
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d.tag = new String(fontReader.ReadByteArray(4), StandardCharsets.US_ASCII);
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d.checkSum = fontReader.ReadUInt32();
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d.offset = fontReader.ReadUInt32();
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d.length = fontReader.ReadUInt32();
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directorys.add(d);
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}
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// 解析表 name (字体信息,包含版权、名称、作者等...)
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for (Directory Temp : directorys) {
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if (Temp.tag.equals("name")) {
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fontReader.index = Temp.offset;
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name.format = fontReader.ReadUInt16();
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name.count = fontReader.ReadUInt16();
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name.stringOffset = fontReader.ReadUInt16();
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for (int i = 0; i < name.count; ++i) {
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NameRecord record = new NameRecord();
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record.platformID = fontReader.ReadUInt16();
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record.encodingID = fontReader.ReadUInt16();
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record.languageID = fontReader.ReadUInt16();
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record.nameID = fontReader.ReadUInt16();
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record.length = fontReader.ReadUInt16();
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record.offset = fontReader.ReadUInt16();
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name.records.add(record);
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}
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}
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}
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// 解析表 head (获取 head.indexToLocFormat)
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for (Directory Temp : directorys) {
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if (Temp.tag.equals("head")) {
|
||||
fontReader.index = Temp.offset;
|
||||
head.majorVersion = fontReader.ReadUInt16();
|
||||
head.minorVersion = fontReader.ReadUInt16();
|
||||
head.fontRevision = fontReader.ReadUInt32();
|
||||
head.checkSumAdjustment = fontReader.ReadUInt32();
|
||||
head.magicNumber = fontReader.ReadUInt32();
|
||||
head.flags = fontReader.ReadUInt16();
|
||||
head.unitsPerEm = fontReader.ReadUInt16();
|
||||
head.created = fontReader.ReadUInt64();
|
||||
head.modified = fontReader.ReadUInt64();
|
||||
head.xMin = fontReader.ReadInt16();
|
||||
head.yMin = fontReader.ReadInt16();
|
||||
head.xMax = fontReader.ReadInt16();
|
||||
head.yMax = fontReader.ReadInt16();
|
||||
head.macStyle = fontReader.ReadUInt16();
|
||||
head.lowestRecPPEM = fontReader.ReadUInt16();
|
||||
head.fontDirectionHint = fontReader.ReadInt16();
|
||||
head.indexToLocFormat = fontReader.ReadInt16();
|
||||
head.glyphDataFormat = fontReader.ReadInt16();
|
||||
}
|
||||
}
|
||||
// 解析表 maxp (获取 maxp.numGlyphs)
|
||||
for (Directory Temp : directorys) {
|
||||
if (Temp.tag.equals("maxp")) {
|
||||
fontReader.index = Temp.offset;
|
||||
maxp.majorVersion = fontReader.ReadUInt16();
|
||||
maxp.minorVersion = fontReader.ReadUInt16();
|
||||
maxp.numGlyphs = fontReader.ReadUInt16();
|
||||
maxp.maxPoints = fontReader.ReadUInt16();
|
||||
maxp.maxContours = fontReader.ReadUInt16();
|
||||
maxp.maxCompositePoints = fontReader.ReadUInt16();
|
||||
maxp.maxCompositeContours = fontReader.ReadUInt16();
|
||||
maxp.maxZones = fontReader.ReadUInt16();
|
||||
maxp.maxTwilightPoints = fontReader.ReadUInt16();
|
||||
maxp.maxStorage = fontReader.ReadUInt16();
|
||||
maxp.maxFunctionDefs = fontReader.ReadUInt16();
|
||||
maxp.maxInstructionDefs = fontReader.ReadUInt16();
|
||||
maxp.maxStackElements = fontReader.ReadUInt16();
|
||||
maxp.maxSizeOfInstructions = fontReader.ReadUInt16();
|
||||
maxp.maxComponentElements = fontReader.ReadUInt16();
|
||||
maxp.maxComponentDepth = fontReader.ReadUInt16();
|
||||
}
|
||||
}
|
||||
// 解析表 loca (轮廓数据偏移地址表)
|
||||
for (Directory Temp : directorys) {
|
||||
if (Temp.tag.equals("loca")) {
|
||||
fontReader.index = Temp.offset;
|
||||
int offset = head.indexToLocFormat == 0 ? 2 : 4;
|
||||
for (long i = 0; i < Temp.length; i += offset) {
|
||||
loca.add(offset == 2 ? fontReader.ReadUInt16() << 1 : fontReader.ReadUInt32());
|
||||
}
|
||||
}
|
||||
}
|
||||
// 解析表 cmap (Unicode编码轮廓索引对照表)
|
||||
for (Directory Temp : directorys) {
|
||||
if (Temp.tag.equals("cmap")) {
|
||||
fontReader.index = Temp.offset;
|
||||
Cmap.version = fontReader.ReadUInt16();
|
||||
Cmap.numTables = fontReader.ReadUInt16();
|
||||
|
||||
for (int i = 0; i < Cmap.numTables; ++i) {
|
||||
CmapRecord record = new CmapRecord();
|
||||
record.platformID = fontReader.ReadUInt16();
|
||||
record.encodingID = fontReader.ReadUInt16();
|
||||
record.offset = fontReader.ReadUInt32();
|
||||
Cmap.records.add(record);
|
||||
}
|
||||
for (int i = 0; i < Cmap.numTables; ++i) {
|
||||
int fmtOffset = Cmap.records.get(i).offset;
|
||||
fontReader.index = Temp.offset + fmtOffset;
|
||||
int EndIndex = fontReader.index;
|
||||
|
||||
int format = fontReader.ReadUInt16();
|
||||
if (Cmap.tables.containsKey(fmtOffset)) continue;
|
||||
if (format == 0) {
|
||||
CmapFormat f = new CmapFormat();
|
||||
f.format = format;
|
||||
f.length = fontReader.ReadUInt16();
|
||||
f.language = fontReader.ReadUInt16();
|
||||
f.glyphIdArray = fontReader.GetBytes(f.length - 6);
|
||||
Cmap.tables.put(fmtOffset, f);
|
||||
} else if (format == 4) {
|
||||
CmapFormat4 f = new CmapFormat4();
|
||||
f.format = format;
|
||||
f.length = fontReader.ReadUInt16();
|
||||
f.language = fontReader.ReadUInt16();
|
||||
f.segCountX2 = fontReader.ReadUInt16();
|
||||
int segCount = f.segCountX2 >> 1;
|
||||
f.searchRange = fontReader.ReadUInt16();
|
||||
f.entrySelector = fontReader.ReadUInt16();
|
||||
f.rangeShift = fontReader.ReadUInt16();
|
||||
f.endCode = fontReader.GetUInt16Array(segCount);
|
||||
f.reservedPad = fontReader.ReadUInt16();
|
||||
f.startCode = fontReader.GetUInt16Array(segCount);
|
||||
f.idDelta = fontReader.GetInt16Array(segCount);
|
||||
f.idRangeOffset = fontReader.GetUInt16Array(segCount);
|
||||
f.glyphIdArray = fontReader.GetUInt16Array((EndIndex + f.length - fontReader.index) >> 1);
|
||||
Cmap.tables.put(fmtOffset, f);
|
||||
} else if (format == 6) {
|
||||
CmapFormat6 f = new CmapFormat6();
|
||||
f.format = format;
|
||||
f.length = fontReader.ReadUInt16();
|
||||
f.language = fontReader.ReadUInt16();
|
||||
f.firstCode = fontReader.ReadUInt16();
|
||||
f.entryCount = fontReader.ReadUInt16();
|
||||
f.glyphIdArray = fontReader.GetUInt16Array(f.entryCount);
|
||||
Cmap.tables.put(fmtOffset, f);
|
||||
} else if (format == 12) {
|
||||
CmapFormat12 f = new CmapFormat12();
|
||||
f.format = format;
|
||||
f.reserved = fontReader.ReadUInt16();
|
||||
f.length = fontReader.ReadUInt32();
|
||||
f.language = fontReader.ReadUInt32();
|
||||
f.numGroups = fontReader.ReadUInt32();
|
||||
f.groups = new ArrayList<>(f.numGroups);
|
||||
for (int n = 0; n < f.numGroups; ++n) {
|
||||
f.groups.add(Triple.of(fontReader.ReadUInt32(), fontReader.ReadUInt32(), fontReader.ReadUInt32()));
|
||||
}
|
||||
Cmap.tables.put(fmtOffset, f);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
// 读取表 glyf (字体轮廓数据表)
|
||||
for (Directory Temp : directorys) {
|
||||
if (Temp.tag.equals("glyf")) {
|
||||
int glyfCount = maxp.numGlyphs;
|
||||
for (int i = 0; i < glyfCount; ) {
|
||||
fontReader.index = Temp.offset + loca.get(i);
|
||||
++i;
|
||||
int glyfNextIndex = i < glyfCount ? loca.get(i) : Temp.length;
|
||||
|
||||
byte[] glyph;
|
||||
short numberOfContours = fontReader.ReadInt16();
|
||||
if (numberOfContours > 0) {
|
||||
short g_xMin = fontReader.ReadInt16();
|
||||
short g_yMin = fontReader.ReadInt16();
|
||||
short g_xMax = fontReader.ReadInt16();
|
||||
short g_yMax = fontReader.ReadInt16();
|
||||
int[] endPtsOfContours = fontReader.GetUInt16Array(numberOfContours);
|
||||
glyph = fontReader.GetBytes(glyfNextIndex - (fontReader.index - Temp.offset));
|
||||
} else {
|
||||
glyph = fontReader.GetBytes(glyfNextIndex - (fontReader.index - 2));
|
||||
}
|
||||
glyf.add(getHexFromBytes(glyph));
|
||||
}
|
||||
}
|
||||
directorys.put(d.tag, d);
|
||||
}
|
||||
|
||||
// 建立Unicode&Glyph双向表
|
||||
Log.i("[queryTTF]", "解析表 name"); // 字体信息,包含版权、名称、作者等...
|
||||
readNameTable(buffer);
|
||||
Log.i("[queryTTF]", "解析表 head"); // 获取 head.indexToLocFormat
|
||||
readHeadTable(buffer);
|
||||
Log.i("[queryTTF]", "解析表 cmap"); // Unicode编码->轮廓索引 对照表
|
||||
readCmapTable(buffer);
|
||||
Log.i("[queryTTF]", "解析表 loca"); // 轮廓数据偏移地址表
|
||||
readLocaTable(buffer);
|
||||
Log.i("[queryTTF]", "解析表 maxp"); // 获取 maxp.numGlyphs 字体轮廓数量
|
||||
readMaxpTable(buffer);
|
||||
Log.i("[queryTTF]", "解析表 glyf"); // 字体轮廓数据表,需要解析loca,maxp表后计算
|
||||
readGlyfTable(buffer);
|
||||
|
||||
Log.i("[queryTTF]", "创建Unicode&Glyph映射表");
|
||||
for (int key = 0; key < 130000; ++key) {
|
||||
// if (key == 0xFF) key = 0x3400;
|
||||
int gid = queryGlyfIndex(key);
|
||||
Integer gid = queryGlyfIndex(key);
|
||||
if (gid >= glyf.size()) continue;
|
||||
unicodeToGlyphIndex.put(key, gid);
|
||||
var val = glyf.get(gid);
|
||||
@ -442,27 +498,24 @@ public class QueryTTF {
|
||||
if (glyphToUnicode.containsKey(val)) continue;
|
||||
glyphToUnicode.put(val, key);
|
||||
}
|
||||
Log.i("[queryTTF]", "字体处理完成");
|
||||
}
|
||||
|
||||
/**
|
||||
* 获取字体信息 (1=字体名称)
|
||||
*
|
||||
* @param nameId 传入十进制字体信息索引
|
||||
* @return 返回查询结果字符串
|
||||
*/
|
||||
public String getNameById(int nameId) {
|
||||
for (Directory Temp : directorys) {
|
||||
if (!Temp.tag.equals("name")) continue;
|
||||
fontReader.index = Temp.offset;
|
||||
break;
|
||||
}
|
||||
for (NameRecord record : name.records) {
|
||||
if (record.nameID != nameId) continue;
|
||||
fontReader.index += name.stringOffset + record.offset;
|
||||
return fontReader.ReadStrings(record.length, record.platformID == 1 ? StandardCharsets.UTF_8 : StandardCharsets.UTF_16BE);
|
||||
}
|
||||
return "error";
|
||||
}
|
||||
// /**
|
||||
// * 获取字体信息 (1=字体名称)
|
||||
// *
|
||||
// * @param nameId 传入十进制字体信息索引
|
||||
// * @return 返回查询结果字符串
|
||||
// */
|
||||
// public String getNameById(int nameId) {
|
||||
// fontReader.index = Objects.requireNonNull(directorys.get("name")).offset;
|
||||
// for (NameRecord record : name.records) {
|
||||
// if (record.nameID != nameId) continue;
|
||||
// fontReader.index += name.stringOffset + record.offset;
|
||||
// return fontReader.ReadStrings(record.length, record.platformID == 1 ? StandardCharsets.UTF_8 : StandardCharsets.UTF_16BE);
|
||||
// }
|
||||
// return "error";
|
||||
// }
|
||||
|
||||
/**
|
||||
* 使用Unicode值查找轮廓索引
|
||||
@ -472,10 +525,11 @@ public class QueryTTF {
|
||||
*/
|
||||
public int queryGlyfIndex(int unicode) {
|
||||
if (unicode == 0) return 0;
|
||||
|
||||
int fmtKey = 0;
|
||||
for (Pair<Integer, Integer> item : pps) {
|
||||
for (var item : pps) {
|
||||
for (CmapRecord record : Cmap.records) {
|
||||
if ((item.getLeft() == record.platformID) && (item.getRight() == record.encodingID)) {
|
||||
if ((item[0] == record.platformID) && (item[1] == record.encodingID)) {
|
||||
fmtKey = record.offset;
|
||||
break;
|
||||
}
|
||||
@ -512,10 +566,10 @@ public class QueryTTF {
|
||||
if (0 <= index && index < tab.glyphIdArray.length) glyfID = tab.glyphIdArray[index];
|
||||
} else if (fmt == 12) {
|
||||
CmapFormat12 tab = (CmapFormat12) table;
|
||||
if (unicode > tab.groups.get(tab.numGroups - 1).getMiddle()) return 0;
|
||||
if (unicode > tab.groups.get(tab.numGroups - 1)[1]) return 0;
|
||||
for (int i = 0; i < tab.numGroups; i++) {
|
||||
if (tab.groups.get(i).getLeft() <= unicode && unicode <= tab.groups.get(i).getMiddle()) {
|
||||
glyfID = tab.groups.get(i).getRight() + unicode - tab.groups.get(i).getLeft();
|
||||
if (tab.groups.get(i)[0] <= unicode && unicode <= tab.groups.get(i)[1]) {
|
||||
glyfID = tab.groups.get(i)[2] + unicode - tab.groups.get(i)[0];
|
||||
break;
|
||||
}
|
||||
}
|
||||
@ -564,14 +618,8 @@ public class QueryTTF {
|
||||
*/
|
||||
public String getHexFromBytes(byte[] glyph) {
|
||||
if (glyph == null) return "";
|
||||
StringBuilder sb = new StringBuilder();
|
||||
for (byte b : glyph) {
|
||||
String hex = Integer.toHexString(b);
|
||||
if (hex.length() == 1) {
|
||||
sb.append("0");//当16进制为个位数时,在前面补0
|
||||
}
|
||||
sb.append(hex);//将16进制加入字符串
|
||||
}
|
||||
return sb.toString().toUpperCase();
|
||||
StringBuilder hexString = new StringBuilder();
|
||||
for (byte b : glyph) hexString.append(String.format("%02X", b));
|
||||
return hexString.toString();
|
||||
}
|
||||
}
|
||||
|
Loading…
Reference in New Issue
Block a user