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优化

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pull/978/head
gedoor 4 years ago
parent cc94d3bc70
commit ab18495e4c
1 changed files with 148 additions and 146 deletions
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  1. 294
      app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.java

294
app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.java
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@ -147,19 +147,19 @@ public class QueryTTF {
}
private static class ByteArrayReader {
public int Index;
public byte[] Buffer;
public int index;
public byte[] buffer;
public ByteArrayReader(byte[] buffer, int index) {
Buffer = buffer;
Index = index;
this.buffer = buffer;
this.index = index;
}
public long ReadUIntX(long len) {
long result = 0;
for (long i = 0; i < len; ++i) {
result <<= 8;
result |= Buffer[Index++] & 0xFF;
result |= buffer[index++] & 0xFF;
}
return result;
}
@ -187,17 +187,17 @@ public class QueryTTF {
public String ReadStrings(int len, Charset charset) {
byte[] result = len > 0 ? new byte[len] : null;
for (int i = 0; i < len; ++i) result[i] = Buffer[Index++];
for (int i = 0; i < len; ++i) result[i] = buffer[index++];
return new String(result, charset);
}
public byte GetByte() {
return Buffer[Index++];
return buffer[index++];
}
public byte[] GetBytes(int len) {
byte[] result = len > 0 ? new byte[len] : null;
for (int i = 0; i < len; ++i) result[i] = Buffer[Index++];
for (int i = 0; i < len; ++i) result[i] = buffer[index++];
return result;
}
@ -214,10 +214,10 @@ public class QueryTTF {
}
}
private final ByteArrayReader FontReader;
private final ByteArrayReader fontReader;
private final Header fileHeader = new Header();
private final List<Directory> Directorys = new LinkedList<>();
private final NameLayout Name = new NameLayout();
private final List<Directory> directorys = new LinkedList<>();
private final NameLayout name = new NameLayout();
private final HeadLayout head = new HeadLayout();
private final MaxpLayout maxp = new MaxpLayout();
private final List<Integer> loca = new LinkedList<>();
@ -232,10 +232,10 @@ public class QueryTTF {
Pair.of(0, 1)
};
public final Map<Integer, String> CodeToGlyph = new HashMap<>();
public final Map<String, Integer> GlyphToCode = new HashMap<>();
private int LimitMix = 0;
private int LimitMax = 0;
public final Map<Integer, String> codeToGlyph = new HashMap<>();
public final Map<String, Integer> glyphToCode = new HashMap<>();
private int limitMix = 0;
private int limitMax = 0;
/**
* 构造函数
@ -243,162 +243,162 @@ public class QueryTTF {
* @param buffer 传入TTF字体二进制数组
*/
public QueryTTF(byte[] buffer) {
FontReader = new ByteArrayReader(buffer, 0);
fontReader = new ByteArrayReader(buffer, 0);
// 获取文件头
fileHeader.majorVersion = FontReader.ReadUInt16();
fileHeader.minorVersion = FontReader.ReadUInt16();
fileHeader.numOfTables = FontReader.ReadUInt16();
fileHeader.searchRange = FontReader.ReadUInt16();
fileHeader.entrySelector = FontReader.ReadUInt16();
fileHeader.rangeShift = FontReader.ReadUInt16();
fileHeader.majorVersion = fontReader.ReadUInt16();
fileHeader.minorVersion = fontReader.ReadUInt16();
fileHeader.numOfTables = fontReader.ReadUInt16();
fileHeader.searchRange = fontReader.ReadUInt16();
fileHeader.entrySelector = fontReader.ReadUInt16();
fileHeader.rangeShift = fontReader.ReadUInt16();
// 获取目录
for (int i = 0; i < fileHeader.numOfTables; ++i) {
Directory d = new Directory();
d.tag = FontReader.ReadStrings(4, StandardCharsets.US_ASCII);
d.checkSum = FontReader.ReadUInt32();
d.offset = FontReader.ReadUInt32();
d.length = FontReader.ReadUInt32();
Directorys.add(d);
d.tag = fontReader.ReadStrings(4, StandardCharsets.US_ASCII);
d.checkSum = fontReader.ReadUInt32();
d.offset = fontReader.ReadUInt32();
d.length = fontReader.ReadUInt32();
directorys.add(d);
}
// 解析表 name (字体信息,包含版权、名称、作者等...)
for (Directory Temp : Directorys) {
for (Directory Temp : directorys) {
if (Temp.tag.equals("name")) {
FontReader.Index = Temp.offset;
Name.format = FontReader.ReadUInt16();
Name.count = FontReader.ReadUInt16();
Name.stringOffset = FontReader.ReadUInt16();
for (int i = 0; i < Name.count; ++i) {
fontReader.index = Temp.offset;
name.format = fontReader.ReadUInt16();
name.count = fontReader.ReadUInt16();
name.stringOffset = fontReader.ReadUInt16();
for (int i = 0; i < name.count; ++i) {
NameRecord record = new NameRecord();
record.platformID = FontReader.ReadUInt16();
record.encodingID = FontReader.ReadUInt16();
record.languageID = FontReader.ReadUInt16();
record.nameID = FontReader.ReadUInt16();
record.length = FontReader.ReadUInt16();
record.offset = FontReader.ReadUInt16();
Name.records.add(record);
record.platformID = fontReader.ReadUInt16();
record.encodingID = fontReader.ReadUInt16();
record.languageID = fontReader.ReadUInt16();
record.nameID = fontReader.ReadUInt16();
record.length = fontReader.ReadUInt16();
record.offset = fontReader.ReadUInt16();
name.records.add(record);
}
}
}
// 解析表 head (获取 head.indexToLocFormat)
for (Directory Temp : Directorys) {
for (Directory Temp : directorys) {
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();
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) {
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();
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) {
for (Directory Temp : directorys) {
if (Temp.tag.equals("loca")) {
FontReader.Index = Temp.offset;
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());
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) {
for (Directory Temp : directorys) {
if (Temp.tag.equals("cmap")) {
FontReader.Index = Temp.offset;
Cmap.version = FontReader.ReadUInt16();
Cmap.numTables = FontReader.ReadUInt16();
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();
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;
fontReader.index = Temp.offset + fmtOffset;
int EndIndex = fontReader.index;
int format = FontReader.ReadUInt16();
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);
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();
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);
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);
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.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()));
f.groups.add(Triple.of(fontReader.ReadUInt32(), fontReader.ReadUInt32(), fontReader.ReadUInt32()));
}
Cmap.tables.put(fmtOffset, f);
}
@ -406,30 +406,30 @@ public class QueryTTF {
}
}
// 解析表 glyf (字体轮廓数据表)
for (Directory Temp : Directorys) {
for (Directory Temp : directorys) {
if (Temp.tag.equals("glyf")) {
FontReader.Index = Temp.offset;
fontReader.index = Temp.offset;
for (int i = 0; i < maxp.numGlyphs; ++i) {
FontReader.Index = Temp.offset + loca.get(i);
fontReader.index = Temp.offset + loca.get(i);
short numberOfContours = FontReader.ReadInt16();
short numberOfContours = fontReader.ReadInt16();
if (numberOfContours > 0) {
GlyfLayout g = new GlyfLayout();
g.numberOfContours = numberOfContours;
g.xMin = FontReader.ReadInt16();
g.yMin = FontReader.ReadInt16();
g.xMax = FontReader.ReadInt16();
g.yMax = FontReader.ReadInt16();
g.endPtsOfContours = FontReader.GetUInt16Array(numberOfContours);
g.instructionLength = FontReader.ReadUInt16();
g.instructions = FontReader.GetBytes(g.instructionLength);
g.xMin = fontReader.ReadInt16();
g.yMin = fontReader.ReadInt16();
g.xMax = fontReader.ReadInt16();
g.yMax = fontReader.ReadInt16();
g.endPtsOfContours = fontReader.GetUInt16Array(numberOfContours);
g.instructionLength = fontReader.ReadUInt16();
g.instructions = fontReader.GetBytes(g.instructionLength);
int flagLength = g.endPtsOfContours[g.endPtsOfContours.length - 1] + 1;
// 获取轮廓点描述标志
g.flags = new byte[flagLength];
for (int n = 0; n < flagLength; ++n) {
g.flags[n] = FontReader.GetByte();
g.flags[n] = fontReader.GetByte();
if ((g.flags[n] & 0x08) != 0x00) {
for (int m = FontReader.ReadUInt8(); m > 0; --m) {
for (int m = fontReader.ReadUInt8(); m > 0; --m) {
g.flags[++n] = g.flags[n - 1];
}
}
@ -439,9 +439,9 @@ public class QueryTTF {
for (int n = 0; n < flagLength; ++n) {
short same = (short) ((g.flags[n] & 0x10) != 0 ? 1 : -1);
if ((g.flags[n] & 0x02) != 0) {
g.xCoordinates[n] = (short) (same * FontReader.ReadUInt8());
g.xCoordinates[n] = (short) (same * fontReader.ReadUInt8());
} else {
g.xCoordinates[n] = same == 1 ? (short) 0 : FontReader.ReadInt16();
g.xCoordinates[n] = same == 1 ? (short) 0 : fontReader.ReadInt16();
}
}
// 获取轮廓点描述y轴相对值
@ -449,9 +449,9 @@ public class QueryTTF {
for (int n = 0; n < flagLength; ++n) {
short same = (short) ((g.flags[n] & 0x20) != 0 ? 1 : -1);
if ((g.flags[n] & 0x04) != 0) {
g.yCoordinates[n] = (short) (same * FontReader.ReadUInt8());
g.yCoordinates[n] = (short) (same * fontReader.ReadUInt8());
} else {
g.yCoordinates[n] = same == 1 ? (short) 0 : FontReader.ReadInt16();
g.yCoordinates[n] = same == 1 ? (short) 0 : fontReader.ReadInt16();
}
}
// 相对坐标转绝对坐标
@ -478,11 +478,11 @@ public class QueryTTF {
for (short b : glyf.get(gid).xCoordinates) sb.append(b);
for (short b : glyf.get(gid).yCoordinates) sb.append(b);
String val = sb.toString();
if (LimitMix == 0) LimitMix = key;
LimitMax = key;
CodeToGlyph.put(key, val);
if (GlyphToCode.containsKey(val)) continue;
GlyphToCode.put(val, key);
if (limitMix == 0) limitMix = key;
limitMax = key;
codeToGlyph.put(key, val);
if (glyphToCode.containsKey(val)) continue;
glyphToCode.put(val, key);
}
}
@ -493,15 +493,15 @@ public class QueryTTF {
* @return 返回查询结果字符串
*/
public String getNameById(int nameId) {
for (Directory Temp : Directorys) {
for (Directory Temp : directorys) {
if (!Temp.tag.equals("name")) continue;
FontReader.Index = Temp.offset;
fontReader.index = Temp.offset;
break;
}
for (NameRecord record : Name.records) {
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);
fontReader.index += name.stringOffset + record.offset;
return fontReader.ReadStrings(record.length, record.platformID == 1 ? StandardCharsets.UTF_8 : StandardCharsets.UTF_16BE);
}
return "error";
}
@ -528,6 +528,7 @@ public class QueryTTF {
int glyfID = 0;
CmapFormat table = Cmap.tables.get(fmtKey);
assert table != null;
int fmt = table.format;
if (fmt == 0) {
if (code < table.glyphIdArray.length) glyfID = table.glyphIdArray[code] & 0xFF;
@ -576,7 +577,7 @@ public class QueryTTF {
* @return 返回bool查询结果
*/
public boolean inLimit(char code) {
return (LimitMix <= code) && (code < LimitMax);
return (limitMix <= code) && (code < limitMax);
}
/**
@ -586,7 +587,7 @@ public class QueryTTF {
* @return 返回轮廓数组的String值
*/
public String getGlyfByCode(int key) {
return CodeToGlyph.getOrDefault(key, "");
return codeToGlyph.getOrDefault(key, "");
}
/**
@ -596,6 +597,7 @@ public class QueryTTF {
* @return 返回Unicode十进制值
*/
public int getCodeByGlyf(String val) {
return GlyphToCode.getOrDefault(val, 0);
//noinspection ConstantConditions
return glyphToCode.getOrDefault(val, 0);
}
}

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