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Implemented changes as per: 

https://docx.codeplex.com/workitem/13827 - to preserve Formatting during replace operations
https://docx.codeplex.com/workitem/13831 - proper RegEx support allowing RegEx search pattern and substitutions in ReplaceText
master
fitdev пре 10 година
родитељ
4c3b859620
комит
5da1d3d520
3 измењених фајлова са 318 додато и 198 уклоњено
Подељен поглед Покажи статистику Diff
  1. 4
    4
      DocX/Container.cs
  2. 167
    121
      DocX/Formatting.cs
  3. 147
    73
      DocX/Paragraph.cs

+ 4
- 4
DocX/Container.cs Прегледај датотеку

@@ -422,7 +422,7 @@ namespace Novacode
return uniqueResults.Keys.ToList(); // return the unique list of results
}
public virtual void ReplaceText(string searchValue, string newValue, bool trackChanges = false, RegexOptions options = RegexOptions.None, Formatting newFormatting = null, Formatting matchFormatting = null, MatchFormattingOptions formattingOptions = MatchFormattingOptions.SubsetMatch)
public virtual void ReplaceText(string searchValue, string newValue, bool trackChanges = false, RegexOptions options = RegexOptions.None, Formatting newFormatting = null, Formatting matchFormatting = null, MatchFormattingOptions formattingOptions = MatchFormattingOptions.SubsetMatch, bool escapeRegEx = true, bool useRegExSubstitutions = false)
{
if (string.IsNullOrEmpty(searchValue))
throw new ArgumentException("oldValue cannot be null or empty", "searchValue");
@@ -434,18 +434,18 @@ namespace Novacode
foreach (var header in headerList)
if (header != null)
foreach (var paragraph in header.Paragraphs)
paragraph.ReplaceText(searchValue, newValue, trackChanges, options, newFormatting, matchFormatting, formattingOptions);
paragraph.ReplaceText(searchValue, newValue, trackChanges, options, newFormatting, matchFormatting, formattingOptions, escapeRegEx, useRegExSubstitutions);
// ReplaceText int main body of document.
foreach (var paragraph in Paragraphs)
paragraph.ReplaceText(searchValue, newValue, trackChanges, options, newFormatting, matchFormatting, formattingOptions);
paragraph.ReplaceText(searchValue, newValue, trackChanges, options, newFormatting, matchFormatting, formattingOptions, escapeRegEx, useRegExSubstitutions);
// ReplaceText in Footers of the document.
var footerList = new List<Footer> { Document.Footers.first, Document.Footers.even, Document.Footers.odd };
foreach (var footer in footerList)
if (footer != null)
foreach (var paragraph in footer.Paragraphs)
paragraph.ReplaceText(searchValue, newValue, trackChanges, options, newFormatting, matchFormatting, formattingOptions);
paragraph.ReplaceText(searchValue, newValue, trackChanges, options, newFormatting, matchFormatting, formattingOptions, escapeRegEx, useRegExSubstitutions);
}
/// <summary>

+ 167
- 121
DocX/Formatting.cs Прегледај датотеку

@@ -10,38 +10,38 @@ namespace Novacode
/// </summary>
public class Formatting : IComparable
{
private XElement rPr;
private bool hidden;
private bool bold;
private bool italic;
private StrikeThrough strikethrough;
private Script script;
private Highlight highlight;
private double? size;
private Color? fontColor;
private Color? underlineColor;
private UnderlineStyle underlineStyle;
private Misc misc;
private CapsStyle capsStyle;
private FontFamily fontFamily;
private int? percentageScale;
private int? kerning;
private int? position;
private double? spacing;
private CultureInfo language;
private XElement rPr;
private bool? hidden;
private bool? bold;
private bool? italic;
private StrikeThrough? strikethrough;
private Script? script;
private Highlight? highlight;
private double? size;
private Color? fontColor;
private Color? underlineColor;
private UnderlineStyle? underlineStyle;
private Misc? misc;
private CapsStyle? capsStyle;
private FontFamily fontFamily;
private int? percentageScale;
private int? kerning;
private int? position;
private double? spacing;
private CultureInfo language;
/// <summary>
/// A text formatting.
/// </summary>
public Formatting()
{
capsStyle = CapsStyle.none;
strikethrough = StrikeThrough.none;
script = Script.none;
highlight = Highlight.none;
underlineStyle = UnderlineStyle.none;
misc = Misc.none;
capsStyle = Novacode.CapsStyle.none;
strikethrough = Novacode.StrikeThrough.none;
script = Novacode.Script.none;
highlight = Novacode.Highlight.none;
underlineStyle = Novacode.UnderlineStyle.none;
misc = Novacode.Misc.none;
// Use current culture by default
language = CultureInfo.CurrentCulture;
@@ -65,7 +65,35 @@ namespace Novacode
}
}
public static Formatting Parse(XElement rPr)
/// <summary>
/// Returns a new identical instance of Formatting.
/// </summary>
/// <returns></returns>
public Formatting Clone()
{
Formatting newf = new Formatting();
newf.Bold = bold;
newf.CapsStyle = capsStyle;
newf.FontColor = fontColor;
newf.FontFamily = fontFamily;
newf.Hidden = hidden;
newf.Highlight = highlight;
newf.Italic = italic;
if (kerning.HasValue) { newf.Kerning = kerning; }
newf.Language = language;
newf.Misc = misc;
if (percentageScale.HasValue) { newf.PercentageScale = percentageScale; }
if (position.HasValue) { newf.Position = position; }
newf.Script = script;
if (size.HasValue) { newf.Size = size; }
if (spacing.HasValue) { newf.Spacing = spacing; }
newf.StrikeThrough = strikethrough;
newf.UnderlineColor = underlineColor;
newf.UnderlineStyle = underlineStyle;
return newf;
}
public static Formatting Parse(XElement rPr)
{
Formatting formatting = new Formatting();
@@ -167,67 +195,76 @@ namespace Novacode
);
}
if(hidden)
rPr.Add(new XElement(XName.Get("vanish", DocX.w.NamespaceName)));
if (bold)
rPr.Add(new XElement(XName.Get("b", DocX.w.NamespaceName)));
if (italic)
rPr.Add(new XElement(XName.Get("i", DocX.w.NamespaceName)));
switch (underlineStyle)
{
case UnderlineStyle.none:
break;
case UnderlineStyle.singleLine:
rPr.Add(new XElement(XName.Get("u", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), "single")));
break;
case UnderlineStyle.doubleLine:
rPr.Add(new XElement(XName.Get("u", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), "double")));
break;
default:
rPr.Add(new XElement(XName.Get("u", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), underlineStyle.ToString())));
break;
}
if (hidden.HasValue && hidden.Value)
rPr.Add(new XElement(XName.Get("vanish", DocX.w.NamespaceName)));
if (bold.HasValue && bold.Value)
rPr.Add(new XElement(XName.Get("b", DocX.w.NamespaceName)));
if (italic.HasValue && italic.Value)
rPr.Add(new XElement(XName.Get("i", DocX.w.NamespaceName)));
if (underlineStyle.HasValue)
{
switch (underlineStyle)
{
case Novacode.UnderlineStyle.none:
break;
case Novacode.UnderlineStyle.singleLine:
rPr.Add(new XElement(XName.Get("u", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), "single")));
break;
case Novacode.UnderlineStyle.doubleLine:
rPr.Add(new XElement(XName.Get("u", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), "double")));
break;
default:
rPr.Add(new XElement(XName.Get("u", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), underlineStyle.ToString())));
break;
}
}
if(underlineColor.HasValue)
{
// If an underlineColor has been set but no underlineStyle has been set
if (underlineStyle == UnderlineStyle.none)
if (underlineStyle == Novacode.UnderlineStyle.none)
{
// Set the underlineStyle to the default
underlineStyle = UnderlineStyle.singleLine;
underlineStyle = Novacode.UnderlineStyle.singleLine;
rPr.Add(new XElement(XName.Get("u", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), "single")));
}
rPr.Element(XName.Get("u", DocX.w.NamespaceName)).Add(new XAttribute(XName.Get("color", DocX.w.NamespaceName), underlineColor.Value.ToHex()));
}
switch (strikethrough)
{
case StrikeThrough.none:
break;
case StrikeThrough.strike:
rPr.Add(new XElement(XName.Get("strike", DocX.w.NamespaceName)));
break;
case StrikeThrough.doubleStrike:
rPr.Add(new XElement(XName.Get("dstrike", DocX.w.NamespaceName)));
break;
default:
break;
}
switch (script)
{
case Script.none:
break;
default:
rPr.Add(new XElement(XName.Get("vertAlign", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), script.ToString())));
break;
}
if (size.HasValue)
if (strikethrough.HasValue)
{
switch (strikethrough)
{
case Novacode.StrikeThrough.none:
break;
case Novacode.StrikeThrough.strike:
rPr.Add(new XElement(XName.Get("strike", DocX.w.NamespaceName)));
break;
case Novacode.StrikeThrough.doubleStrike:
rPr.Add(new XElement(XName.Get("dstrike", DocX.w.NamespaceName)));
break;
default:
break;
}
}
if (script.HasValue)
{
switch (script)
{
case Novacode.Script.none:
break;
default:
rPr.Add(new XElement(XName.Get("vertAlign", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), script.ToString())));
break;
}
}
if (size.HasValue)
{
rPr.Add(new XElement(XName.Get("sz", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), (size * 2).ToString())));
rPr.Add(new XElement(XName.Get("szCs", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), (size * 2).ToString())));
@@ -236,63 +273,72 @@ namespace Novacode
if(fontColor.HasValue)
rPr.Add(new XElement(XName.Get("color", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), fontColor.Value.ToHex())));
switch (highlight)
{
case Highlight.none:
break;
default:
rPr.Add(new XElement(XName.Get("highlight", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), highlight.ToString())));
break;
}
switch (capsStyle)
{
case CapsStyle.none:
break;
default:
rPr.Add(new XElement(XName.Get(capsStyle.ToString(), DocX.w.NamespaceName)));
break;
}
switch (misc)
{
case Misc.none:
break;
case Misc.outlineShadow:
rPr.Add(new XElement(XName.Get("outline", DocX.w.NamespaceName)));
rPr.Add(new XElement(XName.Get("shadow", DocX.w.NamespaceName)));
break;
case Misc.engrave:
rPr.Add(new XElement(XName.Get("imprint", DocX.w.NamespaceName)));
break;
default:
rPr.Add(new XElement(XName.Get(misc.ToString(), DocX.w.NamespaceName)));
break;
}
return rPr;
if (highlight.HasValue)
{
switch (highlight)
{
case Novacode.Highlight.none:
break;
default:
rPr.Add(new XElement(XName.Get("highlight", DocX.w.NamespaceName), new XAttribute(XName.Get("val", DocX.w.NamespaceName), highlight.ToString())));
break;
}
}
if (capsStyle.HasValue)
{
switch (capsStyle)
{
case Novacode.CapsStyle.none:
break;
default:
rPr.Add(new XElement(XName.Get(capsStyle.ToString(), DocX.w.NamespaceName)));
break;
}
}
if (misc.HasValue)
{
switch (misc)
{
case Novacode.Misc.none:
break;
case Novacode.Misc.outlineShadow:
rPr.Add(new XElement(XName.Get("outline", DocX.w.NamespaceName)));
rPr.Add(new XElement(XName.Get("shadow", DocX.w.NamespaceName)));
break;
case Novacode.Misc.engrave:
rPr.Add(new XElement(XName.Get("imprint", DocX.w.NamespaceName)));
break;
default:
rPr.Add(new XElement(XName.Get(misc.ToString(), DocX.w.NamespaceName)));
break;
}
}
return rPr;
}
}
/// <summary>
/// This formatting will apply Bold.
/// </summary>
public bool Bold { get { return bold; } set { bold = value;} }
public bool? Bold { get { return bold; } set { bold = value;} }
/// <summary>
/// This formatting will apply Italic.
/// </summary>
public bool Italic { get { return italic; } set { italic = value; } }
public bool? Italic { get { return italic; } set { italic = value; } }
/// <summary>
/// This formatting will apply StrickThrough.
/// </summary>
public StrikeThrough StrikeThrough { get { return strikethrough; } set { strikethrough = value; } }
public StrikeThrough? StrikeThrough { get { return strikethrough; } set { strikethrough = value; } }
/// <summary>
/// The script that this formatting should be, normal, superscript or subscript.
/// </summary>
public Script Script { get { return script; } set { script = value; } }
public Script? Script { get { return script; } set { script = value; } }
/// <summary>
/// The Size of this text, must be between 0 and 1638.
@@ -398,12 +444,12 @@ namespace Novacode
/// <summary>
/// Highlight colour.
/// </summary>
public Highlight Highlight { get { return highlight; } set { highlight = value; } }
public Highlight? Highlight { get { return highlight; } set { highlight = value; } }
/// <summary>
/// The Underline style that this formatting applies.
/// </summary>
public UnderlineStyle UnderlineStyle { get { return underlineStyle; } set { underlineStyle = value; } }
public UnderlineStyle? UnderlineStyle { get { return underlineStyle; } set { underlineStyle = value; } }
/// <summary>
/// The underline colour.
@@ -413,20 +459,20 @@ namespace Novacode
/// <summary>
/// Misc settings.
/// </summary>
public Misc Misc { get { return misc; } set { misc = value; } }
public Misc? Misc { get { return misc; } set { misc = value; } }
/// <summary>
/// Is this text hidden or visible.
/// </summary>
public bool Hidden { get { return hidden; } set { hidden = value; } }
public bool? Hidden { get { return hidden; } set { hidden = value; } }
/// <summary>
/// Capitalization style.
/// </summary>
public CapsStyle CapsStyle { get { return capsStyle; } set { capsStyle = value; } }
public CapsStyle? CapsStyle { get { return capsStyle; } set { capsStyle = value; } }
/// <summary>
/// The font familt of this formatting.
/// The font family of this formatting.
/// </summary>
/// <!--
/// Bug found and fixed by krugs525 on August 12 2009.

+ 147
- 73
DocX/Paragraph.cs Прегледај датотеку

@@ -2002,26 +2002,66 @@ namespace Novacode
// Get the first run effected by this Insert
Run run = GetFirstRunEffectedByEdit(index);
if (run == null)
{
object insert;
if (formatting != null)
insert = HelperFunctions.FormatInput(value, formatting.Xml);
else
insert = HelperFunctions.FormatInput(value, null);
if (trackChanges)
insert = CreateEdit(EditType.ins, insert_datetime, insert);
Xml.Add(insert);
}
else
{
object newRuns;
if (formatting != null)
newRuns = HelperFunctions.FormatInput(value, formatting.Xml);
else
newRuns = HelperFunctions.FormatInput(value, run.Xml.Element(XName.Get("rPr", DocX.w.NamespaceName)));
if (run == null)
{
object insert;
if (formatting != null) //not sure how to get original formatting here when run == null
insert = HelperFunctions.FormatInput(value, formatting.Xml);
else
insert = HelperFunctions.FormatInput(value, null);
if (trackChanges)
insert = CreateEdit(EditType.ins, insert_datetime, insert);
Xml.Add(insert);
}
else
{
object newRuns;
var rprel = run.Xml.Element(XName.Get("rPr", DocX.w.NamespaceName));
if (formatting != null)
{
//merge 2 formattings properly
Formatting finfmt = null;
Formatting oldfmt = null;
if (rprel != null)
{
oldfmt = Formatting.Parse(rprel);
}
if (oldfmt != null)
{
finfmt = oldfmt.Clone();
if (formatting.Bold.HasValue) { finfmt.Bold = formatting.Bold; }
if (formatting.CapsStyle.HasValue) { finfmt.CapsStyle = formatting.CapsStyle; }
if (formatting.FontColor.HasValue) { finfmt.FontColor = formatting.FontColor; }
finfmt.FontFamily = formatting.FontFamily;
if (formatting.Hidden.HasValue) { finfmt.Hidden = formatting.Hidden; }
if (formatting.Highlight.HasValue) { finfmt.Highlight = formatting.Highlight; }
if (formatting.Italic.HasValue) { finfmt.Italic = formatting.Italic; }
if (formatting.Kerning.HasValue) { finfmt.Kerning = formatting.Kerning; }
finfmt.Language = formatting.Language;
if (formatting.Misc.HasValue) { finfmt.Misc = formatting.Misc; }
if (formatting.PercentageScale.HasValue) { finfmt.PercentageScale = formatting.PercentageScale; }
if (formatting.Position.HasValue) { finfmt.Position = formatting.Position; }
if (formatting.Script.HasValue) { finfmt.Script = formatting.Script; }
if (formatting.Size.HasValue) { finfmt.Size = formatting.Size; }
if (formatting.Spacing.HasValue) { finfmt.Spacing = formatting.Spacing; }
if (formatting.StrikeThrough.HasValue) { finfmt.StrikeThrough = formatting.StrikeThrough; }
if (formatting.UnderlineColor.HasValue) { finfmt.UnderlineColor = formatting.UnderlineColor; }
if (formatting.UnderlineStyle.HasValue) { finfmt.UnderlineStyle = formatting.UnderlineStyle; }
}
else {
finfmt = formatting;
}
newRuns = HelperFunctions.FormatInput(value, finfmt.Xml);
}
else
{
newRuns = HelperFunctions.FormatInput(value, rprel);
}
// The parent of this Run
XElement parentElement = run.Xml.Parent;
@@ -3751,59 +3791,62 @@ namespace Novacode
RemoveText(index, Text.Length - index, trackChanges);
}
/// <summary>
/// Replaces all occurrences of a specified System.String in this instance, with another specified System.String.
/// </summary>
/// <example>
/// <code>
/// // Load a document using a relative filename.
/// using (DocX document = DocX.Load(@"C:\Example\Test.docx"))
/// {
/// // The formatting to match.
/// Formatting matchFormatting = new Formatting();
/// matchFormatting.Size = 10;
/// matchFormatting.Italic = true;
/// matchFormatting.FontFamily = new FontFamily("Times New Roman");
///
/// // The formatting to apply to the inserted text.
/// Formatting newFormatting = new Formatting();
/// newFormatting.Size = 22;
/// newFormatting.UnderlineStyle = UnderlineStyle.dotted;
/// newFormatting.Bold = true;
///
/// // Iterate through the paragraphs in this document.
/// foreach (Paragraph p in document.Paragraphs)
/// {
/// /*
/// * Replace all instances of the string "wrong" with the string "right" and ignore case.
/// * Each inserted instance of "wrong" should use the Formatting newFormatting.
/// * Only replace an instance of "wrong" if it is Size 10, Italic and Times New Roman.
/// * SubsetMatch means that the formatting must contain all elements of the match formatting,
/// * but it can also contain additional formatting for example Color, UnderlineStyle, etc.
/// * ExactMatch means it must not contain additional formatting.
/// */
/// p.ReplaceText("wrong", "right", false, RegexOptions.IgnoreCase, newFormatting, matchFormatting, MatchFormattingOptions.SubsetMatch);
/// }
///
/// // Save all changes made to this document.
/// document.Save();
/// }// Release this document from memory.
/// </code>
/// </example>
/// <seealso cref="Paragraph.RemoveText(int, int, bool)"/>
/// <seealso cref="Paragraph.RemoveText(int, bool)"/>
/// <seealso cref="Paragraph.InsertText(int, string, bool, Formatting)"/>
/// <seealso cref="Paragraph.InsertText(string, bool, Formatting)"/>
/// <param name="newValue">A System.String to replace all occurances of oldValue.</param>
/// <param name="oldValue">A System.String to be replaced.</param>
/// <param name="options">A bitwise OR combination of RegexOption enumeration options.</param>
/// <param name="trackChanges">Track changes</param>
/// <param name="newFormatting">The formatting to apply to the text being inserted.</param>
/// <param name="matchFormatting">The formatting that the text must match in order to be replaced.</param>
/// <param name="fo">How should formatting be matched?</param>
public void ReplaceText(string oldValue, string newValue, bool trackChanges = false, RegexOptions options = RegexOptions.None, Formatting newFormatting = null, Formatting matchFormatting = null, MatchFormattingOptions fo = MatchFormattingOptions.SubsetMatch)
/// <summary>
/// Replaces all occurrences of a specified System.String in this instance, with another specified System.String.
/// </summary>
/// <example>
/// <code>
/// // Load a document using a relative filename.
/// using (DocX document = DocX.Load(@"C:\Example\Test.docx"))
/// {
/// // The formatting to match.
/// Formatting matchFormatting = new Formatting();
/// matchFormatting.Size = 10;
/// matchFormatting.Italic = true;
/// matchFormatting.FontFamily = new FontFamily("Times New Roman");
///
/// // The formatting to apply to the inserted text.
/// Formatting newFormatting = new Formatting();
/// newFormatting.Size = 22;
/// newFormatting.UnderlineStyle = UnderlineStyle.dotted;
/// newFormatting.Bold = true;
///
/// // Iterate through the paragraphs in this document.
/// foreach (Paragraph p in document.Paragraphs)
/// {
/// /*
/// * Replace all instances of the string "wrong" with the string "right" and ignore case.
/// * Each inserted instance of "wrong" should use the Formatting newFormatting.
/// * Only replace an instance of "wrong" if it is Size 10, Italic and Times New Roman.
/// * SubsetMatch means that the formatting must contain all elements of the match formatting,
/// * but it can also contain additional formatting for example Color, UnderlineStyle, etc.
/// * ExactMatch means it must not contain additional formatting.
/// */
/// p.ReplaceText("wrong", "right", false, RegexOptions.IgnoreCase, newFormatting, matchFormatting, MatchFormattingOptions.SubsetMatch);
/// }
///
/// // Save all changes made to this document.
/// document.Save();
/// }// Release this document from memory.
/// </code>
/// </example>
/// <seealso cref="Paragraph.RemoveText(int, int, bool)"/>
/// <seealso cref="Paragraph.RemoveText(int, bool)"/>
/// <seealso cref="Paragraph.InsertText(int, string, bool, Formatting)"/>
/// <seealso cref="Paragraph.InsertText(string, bool, Formatting)"/>
/// <param name="newValue">A System.String to replace all occurrences of oldValue.</param>
/// <param name="oldValue">A System.String to be replaced.</param>
/// <param name="options">A bitwise OR combination of RegexOption enumeration options.</param>
/// <param name="trackChanges">Track changes</param>
/// <param name="newFormatting">The formatting to apply to the text being inserted.</param>
/// <param name="matchFormatting">The formatting that the text must match in order to be replaced.</param>
/// <param name="fo">How should formatting be matched?</param>
/// <param name="escapeRegEx">True if the oldValue needs to be escaped, otherwise false. If it represents a valid RegEx pattern this should be false.</param>
/// <param name="useRegExSubstitutions">True if RegEx-like replace should be performed, i.e. if newValue contains RegEx substitutions. Does not perform named-group substitutions (only numbered groups).</param>
public void ReplaceText(string oldValue, string newValue, bool trackChanges = false, RegexOptions options = RegexOptions.None, Formatting newFormatting = null, Formatting matchFormatting = null, MatchFormattingOptions fo = MatchFormattingOptions.SubsetMatch, bool escapeRegEx = true, bool useRegExSubstitutions = false)
{
MatchCollection mc = Regex.Matches(Text, Regex.Escape(oldValue), options);
string tText = Text;
MatchCollection mc = Regex.Matches(tText, escapeRegEx ? Regex.Escape(oldValue) : oldValue, options);
// Loop through the matches in reverse order
foreach (Match m in mc.Cast<Match>().Reverse())
@@ -3847,7 +3890,38 @@ namespace Novacode
// If the formatting matches, do the replace.
if (formattingMatch)
{
InsertText(m.Index + oldValue.Length, newValue, trackChanges, newFormatting);
string repl = newValue;
//perform RegEx substitutions. Only named groups are not supported. Everything else is supported. However character escapes are not covered.
if (useRegExSubstitutions)
{
repl = repl.Replace("$&", m.Value);
if (m.Groups.Count > 0)
{
int lastcap = 0;
for (int k = 0; k < m.Groups.Count; k++)
{
var g = m.Groups[k];
if ((g == null) || (g.Value == ""))
continue;
repl = repl.Replace("$" + k.ToString(), g.Value);
lastcap = k;
//cannot get named groups ATM
}
repl = repl.Replace("$+", m.Groups[lastcap].Value);
}
if (m.Index > 0)
{
repl = repl.Replace("$`", tText.Substring(0, m.Index));
}
if ((m.Index + m.Length) < tText.Length)
{
repl = repl.Replace("$'", tText.Substring(m.Index + m.Length));
}
repl = repl.Replace("$_", tText);
repl = repl.Replace("$$", "$");
}
InsertText(m.Index + m.Length, repl, trackChanges, newFormatting);
RemoveText(m.Index, m.Length, trackChanges);
}
}

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