/// <summary>Compare to files or string contents and return result via progress object.</summary>
/// <param name="progress"></param>
/// <param name="dataSource"></param>
/// <returns></returns>
public IDiffProgress ProcessDiff(IDiffProgress progress, IDataSource dataSource)
{
try
{
DiffBinaryTextResults result = null;
if (_Args.DiffType == DiffType.File)
{
var fileA = dataSource.CreateFile(_Args.A);
var fileB = dataSource.CreateFile(_Args.B);
result = GetFileLines(fileA, fileB, _Args, progress);
}
else
{
// DiffType in-memory text content
result = GetTextLines(TextContentA, TextContentB, _Args, progress);
}
if (result.IsComparedAs == CompareType.Text || result.IsComparedAs == CompareType.Xml)
{
// Render Text or XML lines from in-memory text content
if (_Args.DiffType == DiffType.File)
{
result = GetTextLines(result, _Args, progress);
}
// Assumption: Binary cannot be edit and RAW data cannot be stored in string
// Therefore, binary lines are rendered only once directly from file
TextOriginalA = result.A.TextContent;
TextContentA = result.A.TextContent;
TextEncodingA = result.A.TextEncoding;
TextOriginalB = result.B.TextContent;
TextContentB = result.B.TextContent;
TextEncodingB = result.B.TextEncoding;
}
ListA = result.A.Lines;
ListB = result.B.Lines;
IsComparedAs = result.IsComparedAs;
IgnoreCase = result.IgnoreCase;
IgnoreTextWhitespace = result.IgnoreTextWhitespace;
TextDiff diff = new TextDiff(_Args.HashType, IgnoreCase, IgnoreTextWhitespace,
result.LeadingCharactersToIgnore, !_Args.ShowChangeAsDeleteInsert);
Script = diff.Execute(ListA, ListB, progress);
progress.ResultData = this;
return(progress);
}
finally
{
}
}
private DiffBinaryTextResults GetTextLines(DiffBinaryTextResults src
, TextBinaryDiffArgs args
, IDiffProgress progress)
{
IList <string> a = null, b = null;
bool isAuto = args.CompareType == CompareType.Auto;
if (args.CompareType == CompareType.Xml || isAuto)
{
a = TryGetXmlText(DiffUtility.GetXmlTextLinesFromXml, "the left side text", src.A.TextContent, !isAuto, args, progress);
// If A failed to parse with Auto, then there's no reason to try B.
if (a != null)
{
b = TryGetXmlText(DiffUtility.GetXmlTextLinesFromXml, "the right side text", src.B.TextContent, !isAuto, args, progress);
}
// If we get here and the compare type was XML, then both
// inputs parsed correctly, and both lists should be non-null.
// If we get here and the compare type was Auto, then one
// or both lists may be null, so we'll fallthrough to the text
// handling logic.
}
if (a == null || b == null)
{
a = DiffUtility.GetStringTextLines(src.A.TextContent, progress);
b = DiffUtility.GetStringTextLines(src.B.TextContent, progress);
}
else
{
src.IsComparedAs = CompareType.Xml;
}
src.A.Lines = a;
src.B.Lines = b;
return(src);
}
private DiffBinaryTextResults GetTextLines(string textA, string textB
, TextBinaryDiffArgs args
, IDiffProgress progress)
{
FileContentInfo af = null, bf = null;
bool isAuto = args.CompareType == CompareType.Auto;
if (args.CompareType == CompareType.Xml || isAuto)
{
af = TryGetXmlText(DiffUtility.GetXmlTextFromXml, "the left side text", textA, !isAuto, args, progress);
// If A failed to parse with Auto, then there's no reason to try B.
if (af != null)
{
bf = TryGetXmlText(DiffUtility.GetXmlTextFromXml, "the right side text", textB, !isAuto, args, progress);
}
// If we get here and the compare type was XML, then both
// inputs parsed correctly, and both lists should be non-null.
// If we get here and the compare type was Auto, then one
// or both lists may be null, so we'll fallthrough to the text
// handling logic.
}
if (af == null || bf == null)
{
af = new FileContentInfo();
bf = new FileContentInfo();
af.Lines = DiffUtility.GetStringTextLines(textA, progress);
bf.Lines = DiffUtility.GetStringTextLines(textB, progress);
}
af.TextContent = textA;
bf.TextContent = textB;
DiffBinaryTextResults result = new DiffBinaryTextResults(CompareType.Text, af, bf);
return(result);
}