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Writing Your Own RTF Converter

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1 Aug 2013CPOL14 min read 2.4M   40.4K   632  
An article on how to write a custom RTF parser and converter.
// -- FILE ------------------------------------------------------------------
// name       : RtfSpec.cs
// project    : RTF Framelet
// created    : Leon Poyyayil - 2008.05.20
// language   : c#
// environment: .NET 2.0
// copyright  : (c) 2004-2010 by Itenso GmbH, Switzerland
// --------------------------------------------------------------------------
using System.Text;

namespace Itenso.Rtf
{

	// ------------------------------------------------------------------------
	public static class RtfSpec
	{

		// --- rtf general ----
		public const string TagRtf = "rtf";
		public const int RtfVersion1 = 1;

		public const string TagGenerator = "generator";
		public const string TagViewKind = "viewkind";

		// --- encoding ----
		public const string TagEncodingAnsi = "ansi";
		public const string TagEncodingMac = "mac";
		public const string TagEncodingPc = "pc";
		public const string TagEncodingPca = "pca";
		public const string TagEncodingAnsiCodePage = "ansicpg";
		public const int AnsiCodePage = 1252;
		public const int SymbolFakeCodePage = 42; // a windows legacy hack ...
		public static readonly Encoding AnsiEncoding = Encoding.GetEncoding( AnsiCodePage );

		public const string TagUnicodeSkipCount = "uc";
		public const string TagUnicodeCode = "u";
		public const string TagUnicodeAlternativeChoices = "upr";
		public const string TagUnicodeAlternativeUnicode = "ud";

		// --- font ----
		public const string TagFontTable = "fonttbl";
		public const string TagDefaultFont = "deff";
		public const string TagFont = "f";
		public const string TagFontKindNil = "fnil";
		public const string TagFontKindRoman = "froman";
		public const string TagFontKindSwiss = "fswiss";
		public const string TagFontKindModern = "fmodern";
		public const string TagFontKindScript = "fscript";
		public const string TagFontKindDecor = "fdecor";
		public const string TagFontKindTech = "ftech";
		public const string TagFontKindBidi = "fbidi";
		public const string TagFontCharset = "fcharset";
		public const string TagFontPitch = "fprq";
		public const string TagFontSize = "fs";
		public const string TagFontDown = "dn";
		public const string TagFontUp = "up";
		public const string TagFontSubscript = "sub";
		public const string TagFontSuperscript = "super";
		public const string TagFontNoSuperSub = "nosupersub";

		public const string TagThemeFontLoMajor = "flomajor"; // these are 'theme' fonts
		public const string TagThemeFontHiMajor = "fhimajor"; // used in new font tables
		public const string TagThemeFontDbMajor = "fdbmajor";
		public const string TagThemeFontBiMajor = "fbimajor";
		public const string TagThemeFontLoMinor = "flominor";
		public const string TagThemeFontHiMinor = "fhiminor";
		public const string TagThemeFontDbMinor = "fdbminor";
		public const string TagThemeFontBiMinor = "fbiminor";

		public const int DefaultFontSize = 24;

		public const string TagCodePage = "cpg";

		// --- color ----
		public const string TagColorTable = "colortbl";
		public const string TagColorRed = "red";
		public const string TagColorGreen = "green";
		public const string TagColorBlue = "blue";
		public const string TagColorForeground = "cf";
		public const string TagColorBackground = "cb";
		public const string TagColorBackgroundWord = "chcbpat";
		public const string TagColorHighlight = "highlight";

		// --- header/footer ----
		public const string TagHeader = "header";
		public const string TagHeaderFirst = "headerf";
		public const string TagHeaderLeft = "headerl";
		public const string TagHeaderRight = "headerr";
		public const string TagFooter = "footer";
		public const string TagFooterFirst = "footerf";
		public const string TagFooterLeft = "footerl";
		public const string TagFooterRight = "footerr";
		public const string TagFootnote = "footnote";

		// --- character ----
		public const string TagDelimiter = ";";
		public const string TagExtensionDestination = "*";
		public const string TagTilde = "~";
		public const string TagHyphen = "-";
		public const string TagUnderscore = "_";

		// --- special character ----
		public const string TagPage = "page";
		public const string TagSection = "sect";
		public const string TagParagraph = "par";
		public const string TagLine = "line";
		public const string TagTabulator = "tab";
		public const string TagEmDash = "emdash";
		public const string TagEnDash = "endash";
		public const string TagEmSpace = "emspace";
		public const string TagEnSpace = "enspace";
		public const string TagQmSpace = "qmspace";
		public const string TagBulltet = "bullet";
		public const string TagLeftSingleQuote = "lquote";
		public const string TagRightSingleQuote = "rquote";
		public const string TagLeftDoubleQuote = "ldblquote";
		public const string TagRightDoubleQuote = "rdblquote";

		// --- format ----
		public const string TagPlain = "plain";
		public const string TagParagraphDefaults = "pard";
		public const string TagSectionDefaults = "sectd";

		public const string TagBold = "b";
		public const string TagItalic = "i";
		public const string TagUnderLine = "ul";
		public const string TagUnderLineNone = "ulnone";
		public const string TagStrikeThrough = "strike";
		public const string TagHidden = "v";
		public const string TagAlignLeft = "ql";
		public const string TagAlignCenter = "qc";
		public const string TagAlignRight = "qr";
		public const string TagAlignJustify = "qj";

		public const string TagStyleSheet = "stylesheet";

		// --- info ----
		public const string TagInfo = "info";
		public const string TagInfoVersion = "version";
		public const string TagInfoRevision = "vern";
		public const string TagInfoNumberOfPages = "nofpages";
		public const string TagInfoNumberOfWords = "nofwords";
		public const string TagInfoNumberOfChars = "nofchars";
		public const string TagInfoId = "id";
		public const string TagInfoTitle = "title";
		public const string TagInfoSubject = "subject";
		public const string TagInfoAuthor = "author";
		public const string TagInfoManager = "manager";
		public const string TagInfoCompany = "company";
		public const string TagInfoOperator = "operator";
		public const string TagInfoCategory = "category";
		public const string TagInfoKeywords = "keywords";
		public const string TagInfoComment = "comment";
		public const string TagInfoDocumentComment = "doccomm";
		public const string TagInfoHyperLinkBase = "hlinkbase";
		public const string TagInfoCreationTime = "creatim";
		public const string TagInfoRevisionTime = "revtim";
		public const string TagInfoPrintTime = "printim";
		public const string TagInfoBackupTime = "buptim";
		public const string TagInfoYear = "yr";
		public const string TagInfoMonth = "mo";
		public const string TagInfoDay = "dy";
		public const string TagInfoHour = "hr";
		public const string TagInfoMinute = "min";
		public const string TagInfoSecond = "sec";
		public const string TagInfoEditingTimeMinutes = "edmins";

		// --- user properties ----
		public const string TagUserProperties = "userprops";
		public const string TagUserPropertyType = "proptype";
		public const string TagUserPropertyName = "propname";
		public const string TagUserPropertyValue = "staticval";
		public const string TagUserPropertyLink = "linkval";

		// this table is from the RTF specification 1.9.1, page 40
		public const int PropertyTypeInteger = 3;
		public const int PropertyTypeRealNumber = 5;
		public const int PropertyTypeDate = 64;
		public const int PropertyTypeBoolean = 11;
		public const int PropertyTypeText = 30;

		// --- picture ----
		public const string TagPicture = "pict";
		public const string TagPictureWrapper = "shppict";
		public const string TagPictureWrapperAlternative = "nonshppict";
		public const string TagPictureFormatEmf = "emfblip";
		public const string TagPictureFormatPng = "pngblip";
		public const string TagPictureFormatJpg = "jpegblip";
		public const string TagPictureFormatPict = "macpict";
		public const string TagPictureFormatOs2Metafile = "pmmetafile";
		public const string TagPictureFormatWmf = "wmetafile";
		public const string TagPictureFormatWinDib = "dibitmap";
		public const string TagPictureFormatWinBmp = "wbitmap";
		public const string TagPictureWidth = "picw";
		public const string TagPictureHeight = "pich";
		public const string TagPictureWidthGoal = "picwgoal";
		public const string TagPictureHeightGoal = "pichgoal";
		public const string TagPictureWidthScale = "picscalex";
		public const string TagPictureHeightScale = "picscaley";

		// --- bullets/numbering ----
		public const string TagParagraphNumberText = "pntext";
		public const string TagListNumberText = "listtext";

		// ----------------------------------------------------------------------
		public static int GetCodePage( int charSet )
		{
			switch ( charSet )
			{
				case 0:
					return 1252; // ANSI
				case 1:
					return 0; // Default
				case 2:
					return 42; // Symbol
				case 77:
					return 10000; // Mac Roman
				case 78:
					return 10001; // Mac Shift Jis
				case 79:
					return 10003; // Mac Hangul
				case 80:
					return 10008; // Mac GB2312
				case 81:
					return 10002; // Mac Big5
				case 82:
					return 0; // Mac Johab (old)
				case 83:
					return 10005; // Mac Hebrew
				case 84:
					return 10004; // Mac Arabic
				case 85:
					return 10006; // Mac Greek
				case 86:
					return 10081; // Mac Turkish
				case 87:
					return 10021; // Mac Thai
				case 88:
					return 10029; // Mac East Europe
				case 89:
					return 10007; // Mac Russian
				case 128:
					return 932; // Shift JIS
				case 129:
					return 949; // Hangul
				case 130:
					return 1361; // Johab
				case 134:
					return 936; // GB2312
				case 136:
					return 950; // Big5
				case 161:
					return 1253; // Greek
				case 162:
					return 1254; // Turkish
				case 163:
					return 1258; // Vietnamese
				case 177:
					return 1255; // Hebrew
				case 178:
					return 1256; // Arabic
				case 179:
					return 0; // Arabic Traditional (old)
				case 180:
					return 0; // Arabic user (old)
				case 181:
					return 0; // Hebrew user (old)
				case 186:
					return 1257; // Baltic
				case 204:
					return 1251; // Russian
				case 222:
					return 874; // Thai
				case 238:
					return 1250; // Eastern European
				case 254:
					return 437; // PC 437
				case 255:
					return 850; // OEM
			}

			return 0;
		} // GetCodePage

	} // class RtfSpec

} // namespace Itenso.Rtf
// -- EOF -------------------------------------------------------------------

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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👨 Senior .NET Software Engineer

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