From 121a45d2c2e5d856bdfdc6b99fb9672be5e11198 Mon Sep 17 00:00:00 2001 From: gedoor Date: Sat, 21 Nov 2020 11:36:05 +0800 Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../legado/app/model/analyzeRule/QueryTTF.kt | 431 +++++++++--------- 1 file changed, 224 insertions(+), 207 deletions(-) diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.kt b/app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.kt index 02fcb2e3e..85d42c9ad 100644 --- a/app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.kt +++ b/app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.kt @@ -9,6 +9,7 @@ import kotlin.experimental.and * @see 获取详情 * @see 基于Javascript的TTF解析器 */ +@ExperimentalUnsignedTypes class QueryTTF(var Font: ByteArray) : JsExtensions { private class Header { var majorVersion: UShort = 0u @@ -150,41 +151,42 @@ class QueryTTF(var Font: ByteArray) : JsExtensions { lateinit var yCoordinates: ArrayList } + @Suppress("unused") private class ByteArrayReader(var Buffer: ByteArray, var Index: Int) { - fun ReadUIntX(len: Long): ULong { - var result: ULong = 0u; + fun readUIntX(len: Long): ULong { + var result: ULong = 0u for (i in 0 until len) { - result.shl(8); + result.shl(8) result = result or Buffer[Index++].toULong() } - return result; + return result } - fun ReadUInt64(): ULong { - return ReadUIntX(8) + fun readUInt64(): ULong { + return readUIntX(8) } - fun ReadInt64(): Long { - return ReadUIntX(8).toLong() + fun readInt64(): Long { + return readUIntX(8).toLong() } - fun ReadUInt32(): UInt { - return ReadUIntX(4).toUInt() + fun readUInt32(): UInt { + return readUIntX(4).toUInt() } - fun ReadInt32(): Int { - return ReadUIntX(4).toInt() + fun readInt32(): Int { + return readUIntX(4).toInt() } - fun ReadUInt16(): UShort { - return ReadUIntX(2).toUShort() + fun readUInt16(): UShort { + return readUIntX(2).toUShort() } - fun ReadInt16(): Short { - return ReadUIntX(2).toShort() + fun readInt16(): Short { + return readUIntX(2).toShort() } - fun ReadStrings(len: Int, charset: Charset): String { + fun readStrings(len: Int, charset: Charset): String { if (len <= 0) return "" val result = ByteArray(len) for (i in 0 until len) { @@ -193,39 +195,39 @@ class QueryTTF(var Font: ByteArray) : JsExtensions { return result.toString(charset) } - fun GetByte(): Byte { + fun getByte(): Byte { return Buffer[Index++] } - fun GetBytes(len: Int): ArrayList { + fun getBytes(len: Int): ArrayList { if (len <= 0) return ArrayList(0) val result = ArrayList(len) for (i in 0 until len) { result[i] = Buffer[Index++] } - return result; + return result } - fun GetUInt16Array(len: Int): ArrayList { + fun getUInt16Array(len: Int): ArrayList { if (len <= 0) return ArrayList(0) val result = ArrayList(len) for (i in 0 until len) { - result[i] = ReadUInt16() + result[i] = readUInt16() } - return result; + return result } - fun GetInt16Array(len: Int): ArrayList { + fun getInt16Array(len: Int): ArrayList { if (len <= 0) return ArrayList(0) val result = ArrayList(len) for (i in 0 until len) { - result[i] = ReadInt16() + result[i] = readInt16() } - return result; + return result } } - private var FontReader: ByteArrayReader + private var fontReader: ByteArrayReader private var fileHeader = Header() private var directorys = ArrayList() private var name = NameLayout() @@ -237,170 +239,180 @@ class QueryTTF(var Font: ByteArray) : JsExtensions { private var unicodeMap = mutableMapOf>() init { - FontReader = ByteArrayReader(Font, 0) + fontReader = ByteArrayReader(Font, 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 (i in 0 until fileHeader.numOfTables.toInt()) { - val tag = FontReader.ReadStrings(4, Charsets.US_ASCII) - val t = Directory(); + val tag = fontReader.readStrings(4, Charsets.US_ASCII) + val t = Directory() t.tag = tag - t.checkSum = FontReader.ReadUInt32() - t.offset = FontReader.ReadUInt32() - t.length = FontReader.ReadUInt32() + t.checkSum = fontReader.readUInt32() + t.offset = fontReader.readUInt32() + t.length = fontReader.readUInt32() directorys.add(t) } // 解析表 name (字体信息,包含版权、名称、作者等...) - for (Temp in directorys) { - if (Temp.tag == "name") { - FontReader.Index = Temp.offset.toInt(); - name.format = FontReader.ReadUInt16(); - name.count = FontReader.ReadUInt16(); - name.stringOffset = FontReader.ReadUInt16(); + for (temp in directorys) { + if (temp.tag == "name") { + fontReader.Index = temp.offset.toInt() + name.format = fontReader.readUInt16() + name.count = fontReader.readUInt16() + name.stringOffset = fontReader.readUInt16() for (i in 0 until name.count.toInt()) { val record = 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 (Temp in directorys) { - if (Temp.tag == "head") { - FontReader.Index = Temp.offset.toInt(); - 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(); + for (temp in directorys) { + if (temp.tag == "head") { + fontReader.Index = temp.offset.toInt() + 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 (Temp in directorys) { - if (Temp.tag == "maxp") { - FontReader.Index = Temp.offset.toInt(); - 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(); + for (temp in directorys) { + if (temp.tag == "maxp") { + fontReader.Index = temp.offset.toInt() + 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 (Temp in directorys) { - if (Temp.tag == "loca") { - FontReader.Index = Temp.offset.toInt() + for (temp in directorys) { + if (temp.tag == "loca") { + fontReader.Index = temp.offset.toInt() val offset: UInt = if (head.indexToLocFormat.toInt() == 0) 2u else 4u var i: UInt = 0u - while (i < Temp.length) { - loca.add(if (offset == 2u) FontReader.ReadUInt16().toUInt().shl(1) else FontReader.ReadUInt32()) + while (i < temp.length) { + loca.add( + if (offset == 2u) fontReader.readUInt16().toUInt() + .shl(1) else fontReader.readUInt32() + ) i += offset } } } // 解析表 cmap (Unicode编码轮廓索引对照表) - for (Temp in directorys) { - if (Temp.tag == "cmap") { - FontReader.Index = Temp.offset.toInt() - cmap.version = FontReader.ReadUInt16() - cmap.numTables = FontReader.ReadUInt16() + for (temp in directorys) { + if (temp.tag == "cmap") { + fontReader.Index = temp.offset.toInt() + cmap.version = fontReader.readUInt16() + cmap.numTables = fontReader.readUInt16() for (i in 0 until cmap.numTables.toInt()) { val record = 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 (i in 0 until cmap.numTables.toInt()) { - val fmtOffset = cmap.records[i].offset; - FontReader.Index = (Temp.offset + fmtOffset).toInt(); - val EndIndex = FontReader.Index; + val fmtOffset = cmap.records[i].offset + fontReader.Index = (temp.offset + fmtOffset).toInt() + val endIndex = fontReader.Index - val format = FontReader.ReadUInt16(); + val format = fontReader.readUInt16() - if (cmap.tables.contains(fmtOffset.toInt())) continue; + if (cmap.tables.contains(fmtOffset.toInt())) continue when { format.equals(0) -> { val fmt = CmapFormat0() fmt.format = format - fmt.length = FontReader.ReadUInt16() - fmt.language = FontReader.ReadUInt16() - fmt.glyphIdArray = FontReader.GetBytes(fmt.length.toInt() - 6) + fmt.length = fontReader.readUInt16() + fmt.language = fontReader.readUInt16() + fmt.glyphIdArray = fontReader.getBytes(fmt.length.toInt() - 6) cmap.tables[fmtOffset] = fmt } format.equals(4) -> { val fmt = CmapFormat4() fmt.format = format - fmt.length = FontReader.ReadUInt16() - fmt.language = FontReader.ReadUInt16() - fmt.segCountX2 = FontReader.ReadUInt16() + fmt.length = fontReader.readUInt16() + fmt.language = fontReader.readUInt16() + fmt.segCountX2 = fontReader.readUInt16() val segCount = fmt.segCountX2.toInt() / 2 - fmt.searchRange = FontReader.ReadUInt16() - fmt.entrySelector = FontReader.ReadUInt16() - fmt.rangeShift = FontReader.ReadUInt16() - fmt.endCode = FontReader.GetUInt16Array(segCount) - fmt.reservedPad = FontReader.ReadUInt16() - fmt.startCode = FontReader.GetUInt16Array(segCount) - fmt.idDelta = FontReader.GetInt16Array(segCount) - fmt.idRangeOffset = FontReader.GetUInt16Array(segCount) - fmt.glyphIdArray = FontReader.GetUInt16Array((fmt.length.toInt() - (FontReader.Index - EndIndex)) / 2) + fmt.searchRange = fontReader.readUInt16() + fmt.entrySelector = fontReader.readUInt16() + fmt.rangeShift = fontReader.readUInt16() + fmt.endCode = fontReader.getUInt16Array(segCount) + fmt.reservedPad = fontReader.readUInt16() + fmt.startCode = fontReader.getUInt16Array(segCount) + fmt.idDelta = fontReader.getInt16Array(segCount) + fmt.idRangeOffset = fontReader.getUInt16Array(segCount) + fmt.glyphIdArray = + fontReader.getUInt16Array((fmt.length.toInt() - (fontReader.Index - endIndex)) / 2) cmap.tables[fmtOffset] = fmt } format.equals(6) -> { val fmt = CmapFormat6() fmt.format = format - fmt.length = FontReader.ReadUInt16() - fmt.language = FontReader.ReadUInt16() - fmt.firstCode = FontReader.ReadUInt16() - fmt.entryCount = FontReader.ReadUInt16() - fmt.glyphIdArray = FontReader.GetUInt16Array(fmt.entryCount.toInt()) + fmt.length = fontReader.readUInt16() + fmt.language = fontReader.readUInt16() + fmt.firstCode = fontReader.readUInt16() + fmt.entryCount = fontReader.readUInt16() + fmt.glyphIdArray = fontReader.getUInt16Array(fmt.entryCount.toInt()) cmap.tables[fmtOffset] = fmt } format.equals(12) -> { val fmt = CmapFormat12() fmt.format = format - fmt.reserved = FontReader.ReadUInt16(); - fmt.length = FontReader.ReadUInt32(); - fmt.language = FontReader.ReadUInt32(); - fmt.numGroups = FontReader.ReadUInt32(); + fmt.reserved = fontReader.readUInt16() + fmt.length = fontReader.readUInt32() + fmt.language = fontReader.readUInt32() + fmt.numGroups = fontReader.readUInt32() for (n in 0 until fmt.numGroups.toLong()) { - fmt.groups.add(Triple(FontReader.ReadUInt32(), FontReader.ReadUInt32(), FontReader.ReadUInt32())) + fmt.groups.add( + Triple( + fontReader.readUInt32(), + fontReader.readUInt32(), + fontReader.readUInt32() + ) + ) } cmap.tables[fmtOffset] = fmt } @@ -409,30 +421,30 @@ class QueryTTF(var Font: ByteArray) : JsExtensions { } } // 解析表 glyf (字体轮廓数据表) - for (Temp in directorys) { - if (Temp.tag == "glyf") { - FontReader.Index = Temp.offset.toInt() + for (temp in directorys) { + if (temp.tag == "glyf") { + fontReader.Index = temp.offset.toInt() for (i in 0 until maxp.numGlyphs.toInt()) { - FontReader.Index = (Temp.offset + loca[i]).toInt() + fontReader.Index = (temp.offset + loca[i]).toInt() val g = GlyfLayout() - g.numberOfContours = FontReader.ReadInt16() - g.xMin = FontReader.ReadInt16() - g.yMin = FontReader.ReadInt16() - g.xMax = FontReader.ReadInt16() - g.yMax = FontReader.ReadInt16() + g.numberOfContours = fontReader.readInt16() + g.xMin = fontReader.readInt16() + g.yMin = fontReader.readInt16() + g.xMax = fontReader.readInt16() + g.yMax = fontReader.readInt16() if (g.numberOfContours > 0) { - g.endPtsOfContours = FontReader.GetUInt16Array(g.numberOfContours.toInt()) - g.instructionLength = FontReader.ReadUInt16() - g.instructions = FontReader.GetBytes(g.instructionLength.toInt()) + g.endPtsOfContours = fontReader.getUInt16Array(g.numberOfContours.toInt()) + g.instructionLength = fontReader.readUInt16() + g.instructions = fontReader.getBytes(g.instructionLength.toInt()) val flagLength = g.endPtsOfContours.last().toInt() + 1 // 获取轮廓点描述标志 g.flags = ArrayList(flagLength) var n = 0 while (n < flagLength) { - g.flags[n] = FontReader.GetByte(); + g.flags[n] = fontReader.getByte() if ((g.flags[n].and(0x08)).toInt() != 0x00) { - for (m in FontReader.GetByte() downTo 1) { + for (m in fontReader.getByte() downTo 1) { g.flags[++n] = g.flags[n - 1] } } @@ -443,9 +455,9 @@ class QueryTTF(var Font: ByteArray) : JsExtensions { for (m in 0 until flagLength) { val same = if ((g.flags[m].and(0x10)).toInt() != 0) 1 else -1 if ((g.flags[m].and(0x02)).toInt() != 0) { - g.xCoordinates[m] = (same * FontReader.GetByte()).toShort() + g.xCoordinates[m] = (same * fontReader.getByte()).toShort() } else { - g.xCoordinates[m] = if (same == 1) 0 else FontReader.ReadInt16() + g.xCoordinates[m] = if (same == 1) 0 else fontReader.readInt16() } } // 获取轮廓点描述y轴相对值 @@ -453,9 +465,9 @@ class QueryTTF(var Font: ByteArray) : JsExtensions { for (m in 0 until flagLength) { val same = if ((g.flags[m].and(0x20)).toInt() != 0) 1 else -1 if ((g.flags[m].and(0x04)).toInt() != 0) { - g.yCoordinates[n] = (same * FontReader.GetByte()).toShort() + g.yCoordinates[n] = (same * fontReader.getByte()).toShort() } else { - g.yCoordinates[n] = if (same == 1) 0 else FontReader.ReadInt16() + g.yCoordinates[n] = if (same == 1) 0 else fontReader.readInt16() } } /* @@ -467,7 +479,7 @@ class QueryTTF(var Font: ByteArray) : JsExtensions { } */ - glyf.add(g); + glyf.add(g) } else { // 复合字体暂未使用 } @@ -477,13 +489,13 @@ class QueryTTF(var Font: ByteArray) : JsExtensions { // 建立Unicode&Glyf映射表 for (i in 0..130000) { - val gid = GetGlyfIndex(i).toInt() - if (gid == 0) continue; + val gid = getGlyfIndex(i).toInt() + if (gid == 0) continue if (unicodeMap.containsKey(gid)) continue val thisGlyf = ArrayList() thisGlyf.addAll(glyf[gid].xCoordinates) thisGlyf.addAll(glyf[gid].yCoordinates) - unicodeMap[i] = thisGlyf; + unicodeMap[i] = thisGlyf } } @@ -492,78 +504,84 @@ class QueryTTF(var Font: ByteArray) : JsExtensions { /** * 获取字体信息 (默认获取字体名称,索引位1) */ - fun GetNameById(nameId: Int = 1): String { + @Suppress("unused") + fun getNameById(nameId: Int = 1): String { for (Temp in directorys) { - if (Temp.tag != "name") continue; - FontReader.Index = Temp.offset.toInt(); - break; + if (Temp.tag != "name") continue + fontReader.Index = Temp.offset.toInt() + break } for (record in name.records) { - if (record.nameID.toInt() != nameId) continue; - FontReader.Index = FontReader.Index + (name.stringOffset + record.offset).toInt(); - return FontReader.ReadStrings(record.length.toInt(), if (record.platformID.toInt() == 1) Charsets.UTF_8 else Charsets.UTF_16BE); + if (record.nameID.toInt() != nameId) continue + fontReader.Index = fontReader.Index + (name.stringOffset + record.offset).toInt() + return fontReader.readStrings( + record.length.toInt(), + if (record.platformID.toInt() == 1) Charsets.UTF_8 else Charsets.UTF_16BE + ) } - return "error"; + return "error" } var pps = arrayListOf>(Pair(3u, 10u), Pair(0u, 4u), Pair(3u, 1u), Pair(1u, 0u), Pair(0u, 3u), Pair(0u, 1u)) + /** * 使用Unicode值查找轮廓索引 */ - private fun GetGlyfIndex(code: Int): Long { - var fmtKey: UInt = 0u; + private fun getGlyfIndex(code: Int): Long { + var fmtKey: UInt = 0u for (record in cmap.records) { for (item in pps) { if ((item.first == record.platformID) && (item.second == record.encodingID)) { - fmtKey = record.offset; - break; + fmtKey = record.offset + break } } - if (fmtKey > 0u) break; + if (fmtKey > 0u) break } - if (fmtKey == 0u) return 0; + if (fmtKey == 0u) return 0 - var glyfID: Long = 0; + var glyfID: Long = 0 if (cmap.tables[fmtKey] is CmapFormat0) { val tab = cmap.tables[fmtKey] as CmapFormat0 - if (code >= tab.glyphIdArray.size) glyfID = 0; - else glyfID = tab.glyphIdArray[code].toLong(); + if (code >= tab.glyphIdArray.size) glyfID = 0 + else glyfID = tab.glyphIdArray[code].toLong() } else if (cmap.tables[fmtKey] is CmapFormat4) { val tab = cmap.tables[fmtKey] as CmapFormat4 - if (code > tab.endCode.last().toInt()) return 0; + if (code > tab.endCode.last().toInt()) return 0 // 二分法查找数值索引 var start = 0 var middle: Int - var end = tab.endCode.size - 1; + var end = tab.endCode.size - 1 while (start + 1 != end) { - middle = (start + end) / 2; - if (tab.endCode[middle] <= code.toUInt()) start = middle; - else end = middle; + middle = (start + end) / 2 + if (tab.endCode[middle] <= code.toUInt()) start = middle + else end = middle } - if (tab.endCode[start] < code.toUInt()) ++start; - if (code.toUInt() < tab.startCode[start]) return 0; + if (tab.endCode[start] < code.toUInt()) ++start + if (code.toUInt() < tab.startCode[start]) return 0 glyfID = if (tab.idRangeOffset[start].toInt() != 0) { - tab.glyphIdArray[code - tab.startCode[start].toInt() + (tab.idRangeOffset[start].toInt() / 2) - (tab.idRangeOffset.size - start)].toLong(); - } else (code + tab.idDelta[start]).toLong(); + tab.glyphIdArray[code - tab.startCode[start].toInt() + (tab.idRangeOffset[start].toInt() / 2) - (tab.idRangeOffset.size - start)].toLong() + } else (code + tab.idDelta[start]).toLong() glyfID = glyfID.and(0xFFFF) } else if (cmap.tables[fmtKey] is CmapFormat6) { val tab = cmap.tables[fmtKey] as CmapFormat6 - val index = code - tab.firstCode.toInt(); + val index = code - tab.firstCode.toInt() glyfID = if (index < 0 || index >= tab.glyphIdArray.size) 0 else tab.glyphIdArray[index].toLong() } else if (cmap.tables[fmtKey] is CmapFormat12) { - val tab = (cmap.tables[fmtKey] as CmapFormat12); - if (code > tab.groups.last().second.toInt()) return 0; + val tab = (cmap.tables[fmtKey] as CmapFormat12) + if (code > tab.groups.last().second.toInt()) return 0 // 二分法查找数值索引 var start = 0 var middle: Int - var end = tab.groups.size - 1; + var end = tab.groups.size - 1 while (start + 1 != end) { - middle = (start + end) / 2; - if (tab.groups[middle].first.toInt() <= code) start = middle; - else end = middle; + middle = (start + end) / 2 + if (tab.groups[middle].first.toInt() <= code) start = middle + else end = middle } if (tab.groups[start].first.toInt() <= code && code <= tab.groups[start].second.toInt()) { - glyfID = (tab.groups[start].third.toInt() + code - tab.groups[start].first.toInt()).toLong(); + glyfID = + (tab.groups[start].third.toInt() + code - tab.groups[start].first.toInt()).toLong() } } return glyfID @@ -572,31 +590,30 @@ class QueryTTF(var Font: ByteArray) : JsExtensions { /** * 使用轮廓数据获取Unicode值 */ - public fun GetCodeByGlyf(inputGlyf:List): Int { - var unicodeVal = 0; - if(inputGlyf.isEmpty()) return 0; - for(g in unicodeMap) - { - if (inputGlyf.size != g.value.size) continue; - var isFound = true; - for(i in inputGlyf.indices) - { + @Suppress("unused") + fun getCodeByGlyf(inputGlyf: List): Int { + var unicodeVal = 0 + if (inputGlyf.isEmpty()) return 0 + for (g in unicodeMap) { + if (inputGlyf.size != g.value.size) continue + var isFound = true + for (i in inputGlyf.indices) { if (inputGlyf[i] != g.value[i]) { - isFound = false; - break; + isFound = false + break } } - if (isFound) unicodeVal = g.key; + if (isFound) unicodeVal = g.key } - return unicodeVal; + return unicodeVal } /** * 使用Unicode值获取轮廓数据 */ - public fun GetGlyfByCode(code:Int): ArrayList - { - if(code <= 0) return ArrayList() + @Suppress("unused") + fun getGlyfByCode(code: Int): ArrayList { + if (code <= 0) return ArrayList() return unicodeMap.getOrDefault(code, ArrayList()) } } \ No newline at end of file