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Writing Your Own RTF Converter

, 1 Aug 2013
An article on how to write a custom RTF parser and converter.
rtfconverter_sourcecode.zip
RtfConverter_SourceCode
bin
Debug
Release
Itenso.Rtf.Converter.Html.dll
Itenso.Rtf.Converter.Xml.dll
Itenso.Rtf.Interpreter.dll
Itenso.Rtf.Parser.dll
Itenso.Sys.dll
log4net.dll
nunit-console-runner.dll
nunit.core.dll
nunit.framework.dll
nunit.util.dll
Rtf2Html.exe
Rtf2Raw.exe
Rtf2Xml.exe
RtfInterpreterTests.exe
RtfParserTests.exe
RtfWindows.exe
RtfWinForms.exe
Converter
Html
Properties
Xml
Properties
docu
Word2007RTFSpec9.pdf
ext
log4net.dll
nunit-console-runner.dll
nunit.core.dll
nunit.framework.dll
nunit.util.dll
Interpreter
Converter
Image
Text
Interpreter
Model
Properties
Support
InterpreterTests
Properties
RtfInterpreterTest
RtfInterpreterTest_0.rtf
RtfInterpreterTest_1.rtf
RtfInterpreterTest_10.rtf
RtfInterpreterTest_11.rtf
RtfInterpreterTest_12.rtf
RtfInterpreterTest_13.rtf
RtfInterpreterTest_14.rtf
RtfInterpreterTest_15.rtf
RtfInterpreterTest_16.rtf
RtfInterpreterTest_17.rtf
RtfInterpreterTest_18.rtf
RtfInterpreterTest_19.rtf
RtfInterpreterTest_2.rtf
RtfInterpreterTest_20.rtf
RtfInterpreterTest_21.rtf
RtfInterpreterTest_22.rtf
RtfInterpreterTest_23.rtf
RtfInterpreterTest_3.rtf
RtfInterpreterTest_4.rtf
RtfInterpreterTest_4.rtf.jpg
RtfInterpreterTest_4.rtf.jpg.hex
RtfInterpreterTest_5.rtf
RtfInterpreterTest_5.rtf.png
RtfInterpreterTest_5.rtf.png.hex
RtfInterpreterTest_6.rtf
RtfInterpreterTest_6.rtf.wmf
RtfInterpreterTest_6.rtf.wmf.hex
RtfInterpreterTest_7.rtf
RtfInterpreterTest_7.rtf.emf
RtfInterpreterTest_7.rtf.emf.hex
RtfInterpreterTest_8.rtf
RtfInterpreterTest_8.rtf.wmf
RtfInterpreterTest_8.rtf.wmf.hex
RtfInterpreterTest_9.rtf
RtfInterpreterTest_fail_0.rtf
RtfInterpreterTest_fail_1.rtf
RtfInterpreterTest_fail_2.rtf
RtfInterpreterTest_fail_3.rtf
RtfInterpreterTest_fail_4.rtf
keys
ItensoRtfConverter.snk
Parser
Model
Parser
Properties
Support
ParserTests
Properties
RtfParserTest
minimal.rtf
RtfParserTest_0.rtf
RtfParserTest_1.rtf
RtfParserTest_2.rtf
RtfParserTest_3.rtf
RtfParserTest_4.rtf
RtfParserTest_5.rtf
RtfParserTest_6.rtf
RtfParserTest_7.rtf
RtfParserTest_8.rtf
RtfParserTest_fail_0.rtf
RtfParserTest_fail_1.rtf
RtfParserTest_fail_2.rtf
RtfParserTest_fail_3.rtf
RtfParserTest_fail_4.rtf
RtfParserTest_fail_5.rtf
RtfParserTest_fail_6.rtf
Rtf2Html
Properties
Rtf2Raw
Properties
Rtf2Xml
Properties
RtfWindows
Properties
RtfWinForms
DefaultText.rtf
Properties
Sys
Application
Collection
Logging
Properties
Test
RtfConverter_v1.7.0.zip
Rtf2Xml
Properties
bin
Release
Itenso.Rtf.Converter.Html.dll
Itenso.Rtf.Converter.Xml.dll
Itenso.Rtf.Interpreter.dll
Itenso.Rtf.Parser.dll
Itenso.Sys.dll
log4net.dll
nunit-console-runner.dll
nunit.core.dll
nunit.framework.dll
nunit.util.dll
Rtf2Html.exe
Rtf2Raw.exe
Rtf2Xml.exe
RtfInterpreterTests.exe
RtfParserTests.exe
RtfWindows.exe
RtfWinForms.exe
Converter
Html
Properties
Xml
Properties
docu
Word2007RTFSpec9.pdf
ext
log4net.dll
nunit-console-runner.dll
nunit.core.dll
nunit.framework.dll
nunit.util.dll
Interpreter
Converter
Image
Text
Interpreter
Model
Properties
Support
InterpreterTests
Properties
RtfInterpreterTest
RtfInterpreterTest_0.rtf
RtfInterpreterTest_1.rtf
RtfInterpreterTest_10.rtf
RtfInterpreterTest_11.rtf
RtfInterpreterTest_12.rtf
RtfInterpreterTest_13.rtf
RtfInterpreterTest_14.rtf
RtfInterpreterTest_15.rtf
RtfInterpreterTest_16.rtf
RtfInterpreterTest_17.rtf
RtfInterpreterTest_18.rtf
RtfInterpreterTest_19.rtf
RtfInterpreterTest_2.rtf
RtfInterpreterTest_20.rtf
RtfInterpreterTest_21.rtf
RtfInterpreterTest_22.rtf
RtfInterpreterTest_23.rtf
RtfInterpreterTest_3.rtf
RtfInterpreterTest_4.rtf
RtfInterpreterTest_4.rtf.jpg
RtfInterpreterTest_4.rtf.jpg.hex
RtfInterpreterTest_5.rtf
RtfInterpreterTest_5.rtf.png
RtfInterpreterTest_5.rtf.png.hex
RtfInterpreterTest_6.rtf
RtfInterpreterTest_6.rtf.wmf
RtfInterpreterTest_6.rtf.wmf.hex
RtfInterpreterTest_7.rtf
RtfInterpreterTest_7.rtf.emf
RtfInterpreterTest_7.rtf.emf.hex
RtfInterpreterTest_8.rtf
RtfInterpreterTest_8.rtf.wmf
RtfInterpreterTest_8.rtf.wmf.hex
RtfInterpreterTest_9.rtf
RtfInterpreterTest_fail_0.rtf
RtfInterpreterTest_fail_1.rtf
RtfInterpreterTest_fail_2.rtf
RtfInterpreterTest_fail_3.rtf
RtfInterpreterTest_fail_4.rtf
keys
ItensoRtfConverter.snk
Parser
Model
Parser
Properties
Support
ParserTests
Properties
RtfParserTest
minimal.rtf
RtfParserTest_0.rtf
RtfParserTest_1.rtf
RtfParserTest_2.rtf
RtfParserTest_3.rtf
RtfParserTest_4.rtf
RtfParserTest_5.rtf
RtfParserTest_6.rtf
RtfParserTest_7.rtf
RtfParserTest_8.rtf
RtfParserTest_fail_0.rtf
RtfParserTest_fail_1.rtf
RtfParserTest_fail_2.rtf
RtfParserTest_fail_3.rtf
RtfParserTest_fail_4.rtf
RtfParserTest_fail_5.rtf
RtfParserTest_fail_6.rtf
Rtf2Html
Properties
Rtf2Raw
Properties
RtfWindows
Properties
RtfWinForms
DefaultText.rtf
Properties
Sys
Application
Collection
Logging
Properties
Test
<?xml version="1.0" encoding="utf-8"?>
<root>
  <!-- 
    Microsoft ResX Schema 
    
    Version 2.0
    
    The primary goals of this format is to allow a simple XML format 
    that is mostly human readable. The generation and parsing of the 
    various data types are done through the TypeConverter classes 
    associated with the data types.
    
    Example:
    
    ... ado.net/XML headers & schema ...
    <resheader name="resmimetype">text/microsoft-resx</resheader>
    <resheader name="version">2.0</resheader>
    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
        <value>[base64 mime encoded serialized .NET Framework object]</value>
    </data>
    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
        <comment>This is a comment</comment>
    </data>
                
    There are any number of "resheader" rows that contain simple 
    name/value pairs.
    
    Each data row contains a name, and value. The row also contains a 
    type or mimetype. Type corresponds to a .NET class that support 
    text/value conversion through the TypeConverter architecture. 
    Classes that don't support this are serialized and stored with the 
    mimetype set.
    
    The mimetype is used for serialized objects, and tells the 
    ResXResourceReader how to depersist the object. This is currently not 
    extensible. For a given mimetype the value must be set accordingly:
    
    Note - application/x-microsoft.net.object.binary.base64 is the format 
    that the ResXResourceWriter will generate, however the reader can 
    read any of the formats listed below.
    
    mimetype: application/x-microsoft.net.object.binary.base64
    value   : The object must be serialized with 
            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
            : and then encoded with base64 encoding.
    
    mimetype: application/x-microsoft.net.object.soap.base64
    value   : The object must be serialized with 
            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
            : and then encoded with base64 encoding.

    mimetype: application/x-microsoft.net.object.bytearray.base64
    value   : The object must be serialized into a byte array 
            : using a System.ComponentModel.TypeConverter
            : and then encoded with base64 encoding.
    -->
  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
    <xsd:element name="root" msdata:IsDataSet="true">
      <xsd:complexType>
        <xsd:choice maxOccurs="unbounded">
          <xsd:element name="metadata">
            <xsd:complexType>
              <xsd:sequence>
                <xsd:element name="value" type="xsd:string" minOccurs="0" />
              </xsd:sequence>
              <xsd:attribute name="name" use="required" type="xsd:string" />
              <xsd:attribute name="type" type="xsd:string" />
              <xsd:attribute name="mimetype" type="xsd:string" />
              <xsd:attribute ref="xml:space" />
            </xsd:complexType>
          </xsd:element>
          <xsd:element name="assembly">
            <xsd:complexType>
              <xsd:attribute name="alias" type="xsd:string" />
              <xsd:attribute name="name" type="xsd:string" />
            </xsd:complexType>
          </xsd:element>
          <xsd:element name="data">
            <xsd:complexType>
              <xsd:sequence>
                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
              </xsd:sequence>
              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
              <xsd:attribute ref="xml:space" />
            </xsd:complexType>
          </xsd:element>
          <xsd:element name="resheader">
            <xsd:complexType>
              <xsd:sequence>
                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
              </xsd:sequence>
              <xsd:attribute name="name" type="xsd:string" use="required" />
            </xsd:complexType>
          </xsd:element>
        </xsd:choice>
      </xsd:complexType>
    </xsd:element>
  </xsd:schema>
  <resheader name="resmimetype">
    <value>text/microsoft-resx</value>
  </resheader>
  <resheader name="version">
    <value>2.0</value>
  </resheader>
  <resheader name="reader">
    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
  </resheader>
  <resheader name="writer">
    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
  </resheader>
  <data name="ColorTableUnsupportedText" xml:space="preserve">
    <value>unsupported text in color table: '{0}'</value>
  </data>
  <data name="DuplicateFont" xml:space="preserve">
    <value>duplicate font id '{0}'</value>
  </data>
  <data name="EmptyDocument" xml:space="preserve">
    <value>document has not contents</value>
  </data>
  <data name="FontSizeOutOfRange" xml:space="preserve">
    <value>invalid font size, must be in the range [1..0xFFFF], but is {0}</value>
  </data>
  <data name="ImageFormatText" xml:space="preserve">
    <value>[{0}:{1} x {2}]</value>
  </data>
  <data name="InvalidCharacterSet" xml:space="preserve">
    <value>charset may not be negative but is {0}</value>
  </data>
  <data name="InvalidCodePage" xml:space="preserve">
    <value>code page may not be negative but is {0}</value>
  </data>
  <data name="InvalidColor" xml:space="preserve">
    <value>invalid color component, must be in the range [0..255], but is {0}</value>
  </data>
  <data name="InvalidDefaultFont" xml:space="preserve">
    <value>invalid default font id '{0}', only the following fonts are available (yet): {1}</value>
  </data>
  <data name="InvalidDocumentStartTag" xml:space="preserve">
    <value>first tag in document is not {0}</value>
  </data>
  <data name="InvalidFontSize" xml:space="preserve">
    <value>invalid font size</value>
  </data>
  <data name="InvalidGeneratorGroup" xml:space="preserve">
    <value>invalid generator group: {0}</value>
  </data>
  <data name="InvalidImageDesiredHeight" xml:space="preserve">
    <value>desiredHeight must be &gt; 0 but is {0}</value>
  </data>
  <data name="InvalidImageDesiredWidth" xml:space="preserve">
    <value>image desiredWidth must be &gt; 0 but is {0}</value>
  </data>
  <data name="InvalidImageHeight" xml:space="preserve">
    <value>image height must be &gt; 0 but is {0}</value>
  </data>
  <data name="InvalidImageScaleHeight" xml:space="preserve">
    <value>scaleHeightPercent must be &gt; 0 but is {0}</value>
  </data>
  <data name="InvalidImageScaleWidth" xml:space="preserve">
    <value>image scaleWidthPercent must be &gt; 0 but is {0}</value>
  </data>
  <data name="InvalidImageWidth" xml:space="preserve">
    <value>image width must be &gt; 0 but is {0}</value>
  </data>
  <data name="InvalidInitGroupState" xml:space="preserve">
    <value>Init: illegal state for group: '{0}'</value>
  </data>
  <data name="InvalidInitTagState" xml:space="preserve">
    <value>Init: illegal state for tag '{0}'</value>
  </data>
  <data name="InvalidInitTextState" xml:space="preserve">
    <value>Init: illegal state for text: '{0}'</value>
  </data>
  <data name="InvalidTextContextState" xml:space="preserve">
    <value>illegal state: cannot pop text format from empty stack</value>
  </data>
  <data name="LogBeginDocument" xml:space="preserve">
    <value>BeginDocument</value>
  </data>
  <data name="LogEndDocument" xml:space="preserve">
    <value>EndDocument</value>
  </data>
  <data name="LogInsertBreak" xml:space="preserve">
    <value>InsertBreak: {0}</value>
  </data>
  <data name="LogInsertChar" xml:space="preserve">
    <value>InsertChar: {0}</value>
  </data>
  <data name="LogInsertImage" xml:space="preserve">
    <value>InsertImage: {0}: {1} x {2}, desired: {3} x {4}, scaled: {5}% x {6}%, {8} bytes</value>
  </data>
  <data name="LogInsertText" xml:space="preserve">
    <value>InsertText: '{0}' with format [{1}]</value>
  </data>
  <data name="LogOverflowText" xml:space="preserve">
    <value>...</value>
  </data>
  <data name="MissingDocumentStartTag" xml:space="preserve">
    <value>first element in document is not a tag</value>
  </data>
  <data name="MissingRtfVersion" xml:space="preserve">
    <value>unspecified RTF version</value>
  </data>
  <data name="UndefinedColor" xml:space="preserve">
    <value>undefined color index: {0}</value>
  </data>
  <data name="UndefinedFont" xml:space="preserve">
    <value>undefined font: {0}</value>
  </data>
  <data name="UnsupportedRtfVersion" xml:space="preserve">
    <value>unsupported RTF version: {0}</value>
  </data>
</root>

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About the Author

Jani Giannoudis
Software Developer (Senior)
Switzerland Switzerland
Jani is Co-founder of Meerazo.com, a free service which allows to share resources like locations, things, persons and their services in a cooperating group of people.

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