mirror of
https://github.com/wmjordan/PDFPatcher.git
synced 2026-10-18 21:52:34 +08:00
WMJ
291 lines
15 KiB
C#
291 lines
15 KiB
C#
using System;
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using System.Text;
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using Cat = PDFPatcher.Processor.ContentParser.OperatorCategory;
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using Sem = PDFPatcher.Processor.ContentParser.OperatorSemantic;
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using Kind = PDFPatcher.Processor.ContentParser.RenderCommandKind;
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namespace PDFPatcher.Processor.ContentParser;
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static class OperatorTable
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{
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const byte Arg0 = 1 << 0,
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Arg1 = 1 << 1,
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Arg2 = 1 << 2,
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Arg3 = 1 << 3,
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Arg4 = 1 << 4,
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Arg5 = 1 << 5,
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Arg6 = 1 << 6,
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Variable = 0xFF;
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#region 文本相关
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// 输出类
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public static readonly OperatorInfo Tj = new(Kind.ShowText, "Tj", "字符串", Cat.Text, Sem.ContentOutput, Arg1);
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public static readonly OperatorInfo TJ = new(Kind.ShowTextWithSpacing, "TJ", "间距字符串", Cat.Text, Sem.ContentOutput, Arg1);
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public static readonly OperatorInfo Quote = new(Kind.NextLineShowText, "'", "换行字符串", Cat.Text, Sem.ContentOutput, Arg1);
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public static readonly OperatorInfo DoubleQuote = new(Kind.MoveToNextLineAndShowText, "\"", "换行间距字符串", Cat.Text, Sem.ContentOutput, Arg3);
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// 状态设置类
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public static readonly OperatorInfo T_Star = new(Kind.NextLine, "T*", "换行", Cat.Text, Sem.StateSetup, Arg0);
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public static readonly OperatorInfo Tc = new(Kind.SetCharSpacing, "Tc", "字距", Cat.Text, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo Tw = new(Kind.SetWordSpacing, "Tw", "词距", Cat.Text, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo Tz = new(Kind.SetHorizontalScaling, "Tz", "文本水平拉伸", Cat.Text, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo TL = new(Kind.SetTextLeading, "TL", "行距", Cat.Text, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo Tf = new(Kind.SetFont, "Tf", "字体", Cat.Text, Sem.StateSetup, Arg2);
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public static readonly OperatorInfo Tr = new(Kind.SetTextRenderMode, "Tr", "文本渲染", Cat.Text, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo Ts = new(Kind.SetTextRise, "Ts", "文本垂直偏移", Cat.Text, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo Td = new(Kind.MoveText, "Td", "换行", Cat.Text, Sem.StateSetup, Arg2);
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public static readonly OperatorInfo TD = new(Kind.MoveTextSetLeading, "TD", "缩进换行", Cat.Text, Sem.StateSetup, Arg2);
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public static readonly OperatorInfo Tm = new(Kind.SetTextMatrix, "Tm", "文本矩阵", Cat.Text, Sem.StateSetup, Arg6);
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public static readonly OperatorInfo d0 = new(Kind.SetGlyphWidthInType3Font, "d0", "Type3字宽", Cat.Text, Sem.StateSetup, Arg2);
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public static readonly OperatorInfo d1 = new(Kind.SetGlyphWidthAndBoundingBoxInType3Font, "d1", "Type3字宽及容器", Cat.Text, Sem.StateSetup, Arg6);
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// 结构分组类
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public static readonly OperatorInfo BT = new(Kind.BeginText, "BT", "文本区", Cat.Text, Sem.GroupStructure, Arg0, isBeginScope: true);
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public static readonly OperatorInfo ET = new(Kind.EndText, "ET", "结束文本区", Cat.Text, Sem.GroupStructure, Arg0, isEndScope: true, pairedBeginKind: Kind.BeginText);
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#endregion
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#region 图形状态
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// 结构分组类
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public static readonly OperatorInfo q = new(Kind.GSave, "q", "绘图状态", Cat.GraphicsState, Sem.GroupStructure, Arg0, isBeginScope: true);
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public static readonly OperatorInfo Q = new(Kind.GRestore, "Q", "绘图状态出栈", Cat.GraphicsState, Sem.GroupStructure, Arg0, isEndScope: true, pairedBeginKind: Kind.GSave);
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// 状态设置类
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public static readonly OperatorInfo cm = new(Kind.ConcatMatrix, "cm", "矩阵", Cat.GraphicsState, Sem.StateSetup, Arg6);
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public static readonly OperatorInfo w = new(Kind.SetLineWidth, "w", "线宽", Cat.GraphicsState, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo J = new(Kind.SetLineCap, "J", "线端样式", Cat.GraphicsState, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo j = new(Kind.SetLineJoin, "j", "连接线样式", Cat.GraphicsState, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo M = new(Kind.SetMiterLimit, "M", "斜接面上限", Cat.GraphicsState, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo d = new(Kind.SetDashPattern, "d", "虚线图案", Cat.GraphicsState, Sem.StateSetup, Arg2);
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public static readonly OperatorInfo ri = new(Kind.SetRenderingIntent, "ri", "颜色渲染意向", Cat.GraphicsState, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo i = new(Kind.SetFlatness, "i", "平滑度容限", Cat.GraphicsState, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo gs = new(Kind.SetGraphicsState, "gs", "绘图参数", Cat.GraphicsState, Sem.StateSetup, Arg1);
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#endregion
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#region 颜色
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// 颜色操作符均为设置颜色状态
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public static readonly OperatorInfo CS = new(Kind.SetColorSpaceStroking, "CS", "画线色域", Cat.Color, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo cs = new(Kind.SetColorSpaceNonStroking, "cs", "非线色域", Cat.Color, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo SC = new(Kind.SetColorStroking, "SC", "画线颜色", Cat.Color, Sem.StateSetup, Variable);
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public static readonly OperatorInfo SCN = new(Kind.SetColorPatternStroking, "SCN", "画线颜色", Cat.Color, Sem.StateSetup, Variable);
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public static readonly OperatorInfo sc = new(Kind.SetColorNonStroking, "sc", "非线颜色", Cat.Color, Sem.StateSetup, Variable);
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public static readonly OperatorInfo scn = new(Kind.SetColorPatternNonStroking, "scn", "非线颜色", Cat.Color, Sem.StateSetup, Variable);
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public static readonly OperatorInfo G = new(Kind.SetGrayStroking, "G", "画线灰色", Cat.Color, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo g = new(Kind.SetGrayNonStroking, "g", "非线灰色", Cat.Color, Sem.StateSetup, Arg1);
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public static readonly OperatorInfo RG = new(Kind.SetRGBStroking, "RG", "画线三色", Cat.Color, Sem.StateSetup, Arg3);
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public static readonly OperatorInfo rg = new(Kind.SetRGBNonStroking, "rg", "非线三色", Cat.Color, Sem.StateSetup, Arg3);
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public static readonly OperatorInfo K = new(Kind.SetCMYKStroking, "K", "画线四色", Cat.Color, Sem.StateSetup, Arg4);
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public static readonly OperatorInfo k = new(Kind.SetCMYKNonStroking, "k", "非线四色", Cat.Color, Sem.StateSetup, Arg4);
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#endregion
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#region 路径
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// 路径构造均为状态设置
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public static readonly OperatorInfo m = new(Kind.MoveTo, "m", "始点", Cat.Path, Sem.StateSetup, Arg2);
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public static readonly OperatorInfo l = new(Kind.LineTo, "l", "直线", Cat.Path, Sem.StateSetup, Arg2);
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public static readonly OperatorInfo c = new(Kind.CurveTo, "c", "曲线", Cat.Path, Sem.StateSetup, Arg6);
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public static readonly OperatorInfo v = new(Kind.CurveToNoFirstControl, "v", "控尾曲线", Cat.Path, Sem.StateSetup, Arg4);
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public static readonly OperatorInfo y = new(Kind.CurveToNoSecondControl, "y", "控首曲线", Cat.Path, Sem.StateSetup, Arg4);
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public static readonly OperatorInfo h = new(Kind.ClosePath, "h", "终点", Cat.Path, Sem.StateSetup, Arg0);
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public static readonly OperatorInfo re = new(Kind.Rectangle, "re", "矩形", Cat.Path, Sem.StateSetup, Arg4);
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#endregion
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#region 路径绘制
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// 路径绘制均为内容输出
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public static readonly OperatorInfo S = new(Kind.StrokePath, "S", "画线", Cat.Painting, Sem.ContentOutput, Arg0);
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public static readonly OperatorInfo s = new(Kind.CloseAndStrokePath, "s", "画封闭线", Cat.Painting, Sem.ContentOutput, Arg0);
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public static readonly OperatorInfo f = new(Kind.FillPathNonZero, "f", "非零填充", Cat.Painting, Sem.ContentOutput, Arg0);
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public static readonly OperatorInfo F = new(Kind.FillPathNonZero, "F", "非零填充", Cat.Painting, Sem.ContentOutput, Arg0);
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public static readonly OperatorInfo f_Star = new(Kind.FillPathEvenOdd, "f*", "奇偶填充", Cat.Painting, Sem.ContentOutput, Arg0);
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public static readonly OperatorInfo B = new(Kind.FillStrokePathNonZero, "B", "非零画线填充", Cat.Painting, Sem.ContentOutput, Arg0);
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public static readonly OperatorInfo B_Star = new(Kind.FillStrokePathEvenOdd, "B*", "奇偶画线填充", Cat.Painting, Sem.ContentOutput, Arg0);
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public static readonly OperatorInfo b = new(Kind.CloseFillStrokePathNonZero, "b", "闭合非零画线填充", Cat.Painting, Sem.ContentOutput, Arg0);
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public static readonly OperatorInfo b_Star = new(Kind.CloseFillStrokePathEvenOdd, "b*", "闭合奇偶画线填充", Cat.Painting, Sem.ContentOutput, Arg0);
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public static readonly OperatorInfo n = new(Kind.EndPath, "n", "闭合路径不填充", Cat.Painting, Sem.StateSetup, Arg0); // n 仅结束路径，无输出
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public static readonly OperatorInfo W = new(Kind.SetClipPath, "W", "非零裁剪", Cat.Painting, Sem.StateSetup, Arg0);
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public static readonly OperatorInfo W_Star = new(Kind.SetClipPathEvenOdd, "W*", "奇偶裁剪", Cat.Painting, Sem.StateSetup, Arg0);
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#endregion
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#region 标记内容
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public static readonly OperatorInfo BX = new(Kind.BeginCompatibilitySection, "BX", "兼容区", Cat.Compatibility, Sem.GroupStructure, Arg0, isBeginScope: true);
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public static readonly OperatorInfo EX = new(Kind.EndCompatibilitySection, "EX", "兼容区结束", Cat.Compatibility, Sem.GroupStructure, Arg0, isEndScope: true, pairedBeginKind: Kind.BeginCompatibilitySection);
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public static readonly OperatorInfo BMC = new(Kind.BeginMarkedContent, "BMC", "标记内容区", Cat.MarkedContent, Sem.GroupStructure, Arg1, isBeginScope: true);
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public static readonly OperatorInfo BDC = new(Kind.BeginMarkedContentWithProps, "BDC", "标记内容区及属性", Cat.MarkedContent, Sem.GroupStructure, Arg2, isBeginScope: true);
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public static readonly OperatorInfo EMC = new(Kind.EndMarkedContent, "EMC", "标记内容区结束", Cat.MarkedContent, Sem.GroupStructure, Arg0, isEndScope: true, pairedBeginKind: Kind.BeginMarkedContent);
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public static readonly OperatorInfo MP = new(Kind.DefineMarkedContentPoint, "MP", "标记内容点", Cat.MarkedContent, Sem.GroupStructure, Arg1);
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public static readonly OperatorInfo DP = new(Kind.DefineMarkedContentPointWithProps, "DP", "标记内容点及属性", Cat.MarkedContent, Sem.GroupStructure, Arg2);
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#endregion
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#region 内联图像
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public static readonly OperatorInfo BI = new(Kind.BeginInlineImage, "BI", "内嵌图像", Cat.Image, Sem.GroupStructure, Arg0, isBeginScope: true);
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public static readonly OperatorInfo EI = new(Kind.EndInlineImage, "EI", "内嵌图像结束", Cat.Image, Sem.GroupStructure, Arg1, isEndScope: true, pairedBeginKind: Kind.BeginInlineImage);
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public static readonly OperatorInfo ID = new(Kind.BeginInlineImageData, "ID", "内嵌图像数据", Cat.Image, Sem.StateSetup, Arg0);
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#endregion
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#region XObject / Shading
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// Do 和 sh 均为内容输出
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public static readonly OperatorInfo Do = new(Kind.PaintXObject, "Do", "绘制对象", Cat.XObject, Sem.ContentOutput, Arg1);
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public static readonly OperatorInfo sh = new(Kind.PaintShading, "sh", "阴影", Cat.XObject, Sem.ContentOutput, Arg1);
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#endregion
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// 兜底
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static readonly OperatorInfo _Unknown = new(Kind.Unknown, "", "未知命令", Cat.Unknown, Sem.StateSetup, Variable);
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public static OperatorInfo Resolve(byte[] buffer, int offset, int length) {
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if (length <= 0) return _Unknown;
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switch (length) {
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case 1:
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switch (buffer[offset]) {
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case (byte)'q': return q;
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case (byte)'Q': return Q;
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case (byte)'B': return B;
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case (byte)'b': return b;
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case (byte)'f': return f;
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case (byte)'F': return F;
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case (byte)'c': return c;
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case (byte)'d': return d;
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case (byte)'m': return m;
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case (byte)'l': return l;
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case (byte)'v': return v;
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case (byte)'y': return y;
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case (byte)'h': return h;
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case (byte)'n': return n;
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case (byte)'S': return S;
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case (byte)'s': return s;
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case (byte)'i': return i;
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case (byte)'w': return w;
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case (byte)'J': return J;
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case (byte)'j': return j;
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case (byte)'M': return M;
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case (byte)'G': return G;
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case (byte)'g': return g;
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case (byte)'K': return K;
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case (byte)'k': return k;
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case (byte)'W': return W;
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case (byte)'"': return DoubleQuote;
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case (byte)'\'': return Quote;
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}
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break;
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case 2:
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switch (buffer[offset]) {
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case (byte)'T':
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switch (buffer[offset + 1]) {
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case (byte)'j': return Tj;
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case (byte)'J': return TJ;
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case (byte)'*': return T_Star;
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case (byte)'c': return Tc;
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case (byte)'w': return Tw;
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case (byte)'z': return Tz;
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case (byte)'L': return TL;
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case (byte)'f': return Tf;
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case (byte)'r': return Tr;
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case (byte)'s': return Ts;
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case (byte)'d': return Td;
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case (byte)'D': return TD;
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case (byte)'m': return Tm;
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}
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break;
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case (byte)'B':
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switch (buffer[offset + 1]) {
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case (byte)'I': return BI;
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case (byte)'X': return BX;
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case (byte)'T': return BT;
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case (byte)'*': return B_Star;
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}
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break;
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case (byte)'E':
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switch (buffer[offset + 1]) {
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case (byte)'T': return ET;
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case (byte)'I': return EI;
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case (byte)'X': return EX;
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}
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break;
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case (byte)'C':
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switch (buffer[offset + 1]) {
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case (byte)'S': return CS;
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}
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break;
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case (byte)'c':
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switch (buffer[offset + 1]) {
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case (byte)'m': return cm;
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case (byte)'s': return cs;
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}
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break;
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case (byte)'d':
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switch (buffer[offset + 1]) {
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case (byte)'0': return d0;
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case (byte)'1': return d1;
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}
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break;
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case (byte)'r':
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switch (buffer[offset + 1]) {
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case (byte)'e': return re;
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case (byte)'g': return rg;
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}
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break;
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case (byte)'R':
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if (buffer[offset + 1] == (byte)'G') return RG;
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break;
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case (byte)'S':
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if (buffer[offset + 1] == (byte)'C') return SC;
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break;
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case (byte)'f':
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if (buffer[offset + 1] == (byte)'*') return f_Star;
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break;
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case (byte)'b':
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if (buffer[offset + 1] == (byte)'*') return b_Star;
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break;
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case (byte)'D':
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switch (buffer[offset + 1]) {
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case (byte)'o': return Do;
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case (byte)'P': return DP;
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}
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break;
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case (byte)'g':
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if (buffer[offset + 1] == (byte)'s') return gs;
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break;
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case (byte)'s':
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if (buffer[offset + 1] == (byte)'h') return sh;
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if (buffer[offset + 1] == (byte)'c') return sc;
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break;
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case (byte)'M':
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if (buffer[offset + 1] == (byte)'P') return MP;
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break;
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case (byte)'I':
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if (buffer[offset + 1] == (byte)'D') return ID;
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break;
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case (byte)'W':
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if (buffer[offset + 1] == (byte)'*') return W_Star;
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break;
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}
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break;
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case 3:
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switch (buffer[offset]) {
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case (byte)'B':
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if (buffer[offset + 2] == (byte)'C') {
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switch (buffer[offset + 1]) {
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case (byte)'M':
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return BMC;
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case (byte)'D':
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return BDC;
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}
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}
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break;
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case (byte)'E':
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if (buffer[offset + 1] == (byte)'M' && buffer[offset + 2] == (byte)'C') return EMC;
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break;
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case (byte)'S':
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if (buffer[offset + 1] == (byte)'C' && buffer[offset + 2] == (byte)'N') return SCN;
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break;
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case (byte)'s':
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if (buffer[offset + 1] == (byte)'c' && buffer[offset + 2] == (byte)'n') return scn;
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break;
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}
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break;
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}
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return new OperatorInfo(Kind.Unknown, Encoding.ASCII.GetString(buffer, offset, length), "未知命令", Cat.Unknown, Sem.StateSetup, Variable);
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}
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}
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