/// <summary>
/// Read the specified text file and return its contents as a block of element characters.
/// </summary>
/// <param name="psFile">Text file specification.</param>
/// <returns>Entire file contents as a block of element characters.</returns>
public override Block Read(string psFile)
{
StreamReader oSr;
string sContents = string.Empty;
ElementChar[] aElementChars = null;
try
{
if (File.Exists(psFile))
{
oSr = new StreamReader(psFile);
sContents = oSr.ReadToEnd();
oSr.Close();
}
else
{
sContents = string.Empty;
}
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.ToString());
}
aElementChars = new ElementChar[sContents.Length];
char[] aCharacters = sContents.ToCharArray();
for (int nCount = 0; nCount < aCharacters.Length; nCount++)
{
aElementChars[nCount] = new ElementChar(aCharacters[nCount]);
}
BlockOfCharacters oBlock = new BlockOfCharacters(aElementChars);
return(oBlock);
}
/// <summary>
/// Return the contents of this block as a block of characters.
/// </summary>
/// <returns>Block of characters.</returns>
public virtual BlockOfCharacters GetCharacters()
{
long nLength = 0;
for (long nLine = 0; nLine < Elements.Length; nLine++)
{
ElementLine oLine = new ElementLine(Elements[nLine].Contents.ToString());
nLength += oLine.Contents.ToString().Length + 1;
}
long nIndex = 0;
ElementChar[] aElements = new ElementChar[nLength];
for (long nLine = 0; nLine < Elements.Length; nLine++)
{
ElementLine oLine = new ElementLine(Elements[nLine].Contents.ToString());
ElementChar oElement = null;
char[] aContents = oLine.Contents.ToString().ToCharArray();
for (int nPos = 0; nPos < aContents.Length; nPos++)
{
oElement = new ElementChar(aContents[nPos]);
aElements[nIndex] = oElement;
nIndex++;
}
oElement = new ElementChar('\n');
aElements[nIndex] = oElement;
}
BlockOfCharacters oBlock = new BlockOfCharacters(aElements);
return(oBlock);
}
/// <summary>
/// Check if both blocks of elements are equal.
/// </summary>
/// <param name="poBlock1">Left hand side operand block to compare.</param>
/// <param name="poBlock2">Right hand side operand block to compare.</param>
/// <returns>True if equal, false otherwise.</returns>
private static bool AreEqual(BlockOfCharacters poBlock1, BlockOfCharacters poBlock2)
{
bool bEqual = false;
if (poBlock1.IsEmpty && !poBlock2.IsEmpty)
{
bEqual = false;
}
else if (!poBlock1.IsEmpty && poBlock2.IsEmpty)
{
bEqual = false;
}
else if (poBlock1.IsEmpty && poBlock2.IsEmpty)
{
bEqual = true;
}
else if (poBlock1.Length == 0 && poBlock2.Length == 0)
{
bEqual = true;
}
else if (poBlock1.Length != poBlock2.Length)
{
bEqual = false;
}
else if (poBlock1.Length == poBlock2.Length)
{
ElementChar[] aElements1 = (ElementChar[])poBlock1.Elements;
ElementChar[] aElements2 = (ElementChar[])poBlock2.Elements;
bEqual = true;
for (long nCount = 0; nCount < aElements1.Length; nCount++)
{
if (aElements1[nCount] != aElements2[nCount])
{
bEqual = false;
break;
}
}
}
return(bEqual);
}
/// <summary>
/// Compare two blocks of characters against each other.
/// </summary>
/// <param name="poAlpha">First block of characters.</param>
/// <param name="poBeta">Second block of characters.</param>
public override void Compare(Block poAlpha1, Block poBeta1)
{
Sections.OnAddSection += new Sections.AddSectionHandler(Sections_OnAddSection);
BlockOfCharacters poAlpha = (BlockOfCharacters)poAlpha1;
BlockOfCharacters poBeta = (BlockOfCharacters)poBeta1;
this.MinElements = this.MinChars;
Analyse(1, poAlpha, 1, poBeta);
//Add missing alpha segments.
SegmentComparer oSegAComparer = new SegmentComparer();
oSegAComparer.ComparisonMethod = SegmentComparer.ComparisonType.AlphaPosition;
AddMissingSegments("A1", oSegAComparer, mcSegA, poAlpha);
//Add missing beta segments.
SegmentComparer oSegBComparer = new SegmentComparer();
oSegBComparer.ComparisonMethod = SegmentComparer.ComparisonType.BetaPosition;
AddMissingSegments("B1", oSegBComparer, mcSegB, poBeta);
//Check if user has chosen to cancel run.
if (Interrupt.Reason == "Cancel")
{
return;
}
//Merge into report.
long nCountA = 0;
long nCountB = 0;
string sMatchIndent = string.Empty;
string sInsertIndent = string.Empty;
SegmentOfCharacters oSegA = new SegmentOfCharacters();
SegmentOfCharacters oSegB = new SegmentOfCharacters();
oSegA.Type = "X1";
oSegA.Data = new BlockOfCharacters();
oSegB.Type = "Z1";
oSegB.Data = new BlockOfCharacters();
SectionOfCharacters oSection = new SectionOfCharacters();
while (nCountA < mcSegA.Count || nCountB < mcSegB.Count)
{
if (nCountA < mcSegA.Count)
{
oSegA = (SegmentOfCharacters)mcSegA[(int)nCountA];
}
if (nCountB < mcSegB.Count)
{
oSegB = (SegmentOfCharacters)mcSegB[(int)nCountB];
}
if (oSegA.Type.Substring(0, 1) == "M" && oSegB.Type.Substring(0, 1) == "M")
{
if (!oSegA.Data.IsEmpty)
{
oSection = new SectionOfCharacters();
oSection.Type = oSegA.Type;
oSection.Position = oSegA.PositionA;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegA.Size;
oSection.Data = oSegA.Data;
oSection.Indentation = sInsertIndent;
Sections.Add(oSection);
oSegA.Display(sInsertIndent);
sMatchIndent = oSegA.Indent;
sInsertIndent = oSegA.Indent;
}
nCountA++;
nCountB++;
}
else if (oSegA.Type.Substring(0, 1) == "M" && oSegB.Type.Substring(0, 1) != "M")
{
if (!oSegB.Data.IsEmpty)
{
oSection = new SectionOfCharacters();
oSection.Type = oSegB.Type;
oSection.Position = oSegB.PositionB;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegB.Size;
oSection.Data = oSegB.Data;
oSection.Indentation = sMatchIndent;
Sections.Add(oSection);
oSegB.Display(sMatchIndent);
}
nCountB++;
}
else if (oSegA.Type.Substring(0, 1) != "M" && oSegB.Type.Substring(0, 1) == "M")
{
if (!oSegA.Data.IsEmpty)
{
oSection = new SectionOfCharacters();
oSection.Type = oSegA.Type;
oSection.Position = oSegA.PositionA;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegA.Size;
oSection.Data = oSegA.Data;
oSection.Indentation = sMatchIndent;
Sections.Add(oSection);
oSegA.Display(sMatchIndent);
sInsertIndent = oSegA.Indent;
}
nCountA++;
}
else if (oSegA.Type.Substring(0, 1) != "M" && oSegB.Type.Substring(0, 1) != "M")
{
if (oSegA.PositionA < oSegB.PositionB)
{
if (!oSegA.Data.IsEmpty)
{
oSection = new SectionOfCharacters();
oSection.Type = oSegA.Type;
oSection.Position = oSegA.PositionA;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegA.Size;
oSection.Data = oSegA.Data;
oSection.Indentation = sMatchIndent;
Sections.Add(oSection);
oSegA.Display(sMatchIndent);
sInsertIndent = oSegA.Indent;
}
if (!oSegB.Data.IsEmpty)
{
oSection = new SectionOfCharacters();
oSection.Type = oSegB.Type;
oSection.Position = oSegB.PositionB;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegB.Size;
oSection.Data = oSegB.Data;
oSection.Indentation = sMatchIndent;
Sections.Add(oSection);
oSegB.Display(sMatchIndent);
}
}
else
{
if (!oSegB.Data.IsEmpty)
{
oSection = new SectionOfCharacters();
oSection.Type = oSegB.Type;
oSection.Position = oSegB.PositionB;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegB.Size;
oSection.Data = oSegB.Data;
oSection.Indentation = sMatchIndent;
Sections.Add(oSection);
oSegB.Display(sMatchIndent);
}
if (!oSegA.Data.IsEmpty)
{
oSection = new SectionOfCharacters();
oSection.Type = oSegA.Type;
oSection.Position = oSegA.PositionA;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegA.Size;
oSection.Data = oSegA.Data;
oSection.Indentation = sMatchIndent;
Sections.Add(oSection);
oSegA.Display(sMatchIndent);
sInsertIndent = oSegA.Indent;
}
}
nCountA++;
nCountB++;
}
}
}
/// <summary>
/// Build comparisons list.
/// </summary>
private void BuildComparisons()
{
mcComparisons = new List <Comparison>();
for (int nCount = 0; nCount < Sections.Count; nCount++)
{
Section oSection = (Section)Sections[nCount];
if (oSection is SectionOfLines)
{
SectionOfLines oSectionOfLines = (SectionOfLines)oSection;
BlockOfLines moBlock = (BlockOfLines)oSectionOfLines.Data;
if (oSectionOfLines.Type.Substring(0, 1) == "M")
{
for (long nIndex = 0; nIndex < moBlock.Elements.Length; nIndex++)
{
long position = oSectionOfLines.PositionA + nIndex;
string sData = moBlock.Elements[nIndex].ToDisplay();
Comparison oComparison = new Comparison(Comparison.GranularityEnum.Line, Comparison.MatchEnum.Match, position, sData, position, sData);
mcComparisons.Add(oComparison);
}
}
else if (oSectionOfLines.Type.Substring(0, 1) == "A")
{
for (long nIndex = 0; nIndex < moBlock.Elements.Length; nIndex++)
{
long position = oSectionOfLines.PositionA + nIndex;
string sData = moBlock.Elements[nIndex].ToDisplay();
Comparison oComparison = new Comparison(Comparison.GranularityEnum.Line, Comparison.MatchEnum.InsertNew, position, sData, -1, string.Empty);
mcComparisons.Add(oComparison);
}
}
else if (oSectionOfLines.Type.Substring(0, 1) == "B")
{
for (long nIndex = 0; nIndex < moBlock.Elements.Length; nIndex++)
{
long position = oSectionOfLines.PositionB + nIndex;
string sData = moBlock.Elements[nIndex].ToDisplay();
Comparison oComparison = new Comparison(Comparison.GranularityEnum.Line, Comparison.MatchEnum.DeleteOld, -1, string.Empty, position, sData);
mcComparisons.Add(oComparison);
}
}
}
if (oSection is SectionOfCharacters)
{
SectionOfCharacters oSectionOfCharacters = (SectionOfCharacters)oSection;
BlockOfCharacters moBlock = (BlockOfCharacters)oSectionOfCharacters.Data;
if (oSectionOfCharacters.Type.Substring(0, 1) == "M")
{
for (long nIndex = 0; nIndex < moBlock.Elements.Length; nIndex++)
{
long position = oSectionOfCharacters.PositionA + nIndex;
string sData = moBlock.Elements[nIndex].ToDisplay();
Comparison oComparison = new Comparison(Comparison.GranularityEnum.Character, Comparison.MatchEnum.Match, position, sData, position, sData);
mcComparisons.Add(oComparison);
}
}
else if (oSectionOfCharacters.Type.Substring(0, 1) == "A")
{
for (long nIndex = 0; nIndex < moBlock.Elements.Length; nIndex++)
{
long position = oSectionOfCharacters.PositionA + nIndex;
string sData = moBlock.Elements[nIndex].ToDisplay();
Comparison oComparison = new Comparison(Comparison.GranularityEnum.Character, Comparison.MatchEnum.InsertNew, position, sData, -1, string.Empty);
mcComparisons.Add(oComparison);
}
}
else if (oSectionOfCharacters.Type.Substring(0, 1) == "B")
{
for (long nIndex = 0; nIndex < moBlock.Elements.Length; nIndex++)
{
long position = oSectionOfCharacters.PositionB + nIndex;
string sData = moBlock.Elements[nIndex].ToDisplay();
Comparison oComparison = new Comparison(Comparison.GranularityEnum.Character, Comparison.MatchEnum.DeleteOld, -1, string.Empty, position, sData);
mcComparisons.Add(oComparison);
}
}
}
}
}
/// <summary>
/// Compare two blocks of lines against each other.
/// </summary>
/// <param name="poAlpha">First block of lines.</param>
/// <param name="poBeta">Second block of lines.</param>
public override void Compare(Block poAlpha1, Block poBeta1)
{
Sections.OnAddSection += new Sections.AddSectionHandler(Sections_OnAddSection);
BlockOfLines poAlpha = (BlockOfLines)poAlpha1;
BlockOfLines poBeta = (BlockOfLines)poBeta1;
BlockOfCharacters oAlphaChars = null;
BlockOfCharacters oBetaChars = null;
if (poAlpha.ContentsLength >= poBeta.ContentsLength)
{
mcSegA.ProgressOn = Segments.ProgressOnEnum.Alpha;
mcSegB.ProgressOn = Segments.ProgressOnEnum.Alpha;
SignalBeginCompare(poAlpha.ContentsLength);
}
else
{
mcSegA.ProgressOn = Segments.ProgressOnEnum.Beta;
mcSegB.ProgressOn = Segments.ProgressOnEnum.Beta;
SignalBeginCompare(poBeta.ContentsLength);
}
this.MinElements = this.MinLines;
Analyse(1, poAlpha, 1, poBeta);
//Add missing alpha segments.
SegmentComparer oSegAComparer = new SegmentComparer();
oSegAComparer.ComparisonMethod = SegmentComparer.ComparisonType.AlphaPosition;
AddMissingSegments("A1", oSegAComparer, mcSegA, poAlpha);
//Add missing beta segments.
SegmentComparer oSegBComparer = new SegmentComparer();
oSegBComparer.ComparisonMethod = SegmentComparer.ComparisonType.BetaPosition;
AddMissingSegments("B1", oSegBComparer, mcSegB, poBeta);
SignalEndOfCompare();
//Check if user has chosen to cancel run.
if (Interrupt.Reason == "Cancel")
{
return;
}
//Report.
if (poAlpha.ContentsLength >= poBeta.ContentsLength)
{
Sections.ProgressOn = Sections.ProgressOnEnum.Alpha;
SignalBeginReport(poAlpha.ContentsLength);
}
else
{
Sections.ProgressOn = Sections.ProgressOnEnum.Beta;
SignalBeginReport(poBeta.ContentsLength);
}
//Merge into report.
long nCountA = 0;
long nCountB = 0;
SegmentOfLines oSegA = new SegmentOfLines();
SegmentOfLines oSegB = new SegmentOfLines();
oSegA.Type = "X1";
oSegA.Data = new BlockOfLines();
oSegB.Type = "Z1";
oSegB.Data = new BlockOfLines();
SectionOfLines oSection = new SectionOfLines();
while (nCountA < mcSegA.Count || nCountB < mcSegB.Count)
{
if (nCountA < mcSegA.Count)
{
oSegA = (SegmentOfLines)mcSegA[(int)nCountA];
}
if (nCountB < mcSegB.Count)
{
oSegB = (SegmentOfLines)mcSegB[(int)nCountB];
}
if (oSegA.Type.Substring(0, 1) == "M" && oSegB.Type.Substring(0, 1) == "M")
{
if (!oSegA.Data.IsEmpty)
{
oSegA.Display();
oSection = new SectionOfLines();
oSection.Type = oSegA.Type;
oSection.Position = oSegA.PositionA;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegA.Size;
oSection.Data = oSegA.Data;
Sections.Add(oSection);
}
nCountA++;
nCountB++;
}
else if (oSegA.Type.Substring(0, 1) == "M" && oSegB.Type.Substring(0, 1) != "M")
{
if (!oSegB.Data.IsEmpty)
{
oSegB.Display();
oSection = new SectionOfLines();
oSection.Type = oSegB.Type;
oSection.Position = oSegB.PositionB;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegB.Size;
oSection.Data = oSegB.Data;
Sections.Add(oSection);
}
nCountB++;
}
else if (oSegA.Type.Substring(0, 1) != "M" && oSegB.Type.Substring(0, 1) == "M")
{
if (!oSegA.Data.IsEmpty)
{
oSegA.Display();
oSection = new SectionOfLines();
oSection.Type = oSegA.Type;
oSection.Position = oSegA.PositionA;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegA.Size;
oSection.Data = oSegA.Data;
Sections.Add(oSection);
}
nCountA++;
}
else if (oSegA.Type.Substring(0, 1) != "M" && oSegB.Type.Substring(0, 1) != "M")
{
if (this.CompleteLines)
{
if (oSegA.PositionA < oSegB.PositionB)
{
if (!oSegA.Data.IsEmpty)
{
oSegA.Display();
oSection = new SectionOfLines();
oSection.Type = oSegA.Type;
oSection.Position = oSegA.PositionA;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegA.Size;
oSection.Data = oSegA.Data;
Sections.Add(oSection);
}
if (!oSegB.Data.IsEmpty)
{
oSegB.Display();
oSection = new SectionOfLines();
oSection.Type = oSegB.Type;
oSection.Position = oSegB.PositionB;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegB.Size;
oSection.Data = oSegB.Data;
Sections.Add(oSection);
}
}
else
{
if (!oSegB.Data.IsEmpty)
{
oSegB.Display();
oSection = new SectionOfLines();
oSection.Type = oSegB.Type;
oSection.Position = oSegB.PositionB;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegB.Size;
oSection.Data = oSegB.Data;
Sections.Add(oSection);
}
if (!oSegA.Data.IsEmpty)
{
oSegA.Display();
oSection = new SectionOfLines();
oSection.Type = oSegA.Type;
oSection.Position = oSegA.PositionA;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegA.Size;
oSection.Data = oSegA.Data;
Sections.Add(oSection);
}
}
nCountA++;
nCountB++;
}
else
{
if (!oSegA.Data.IsEmpty && !oSegB.Data.IsEmpty)
{
if (oSegA.Data.Length < this.SubLineMatchLimit && oSegB.Data.Length < this.SubLineMatchLimit)
{
//Look for sub-line matches.
oAlphaChars = oSegA.Data.GetCharacters();
oBetaChars = oSegB.Data.GetCharacters();
CompareCharacters oCompareCharacters = new CompareCharacters();
oCompareCharacters.MinElements = this.MinChars;
oCompareCharacters.MinChars = this.MinChars;
oCompareCharacters.MinLines = this.MinLines;
oCompareCharacters.LimitElements = this.LimitCharacters;
oCompareCharacters.LimitCharacters = this.LimitCharacters;
oCompareCharacters.LimitLines = this.LimitLines;
oCompareCharacters.SubLineMatchLimit = this.SubLineMatchLimit;
oCompareCharacters.CompleteLines = this.CompleteLines;
oCompareCharacters.Sections = this.Sections;
oCompareCharacters.Interrupt = this.Interrupt;
oCompareCharacters.Compare(oAlphaChars, oBetaChars);
}
else
{
//Don't look for sub-line matches if the mismatched blocks are too large,
//since this has a large performance impact for little likely benefit.
if (oSegA.PositionA < oSegB.PositionB)
{
if (!oSegA.Data.IsEmpty)
{
oSegA.Display();
oSection = new SectionOfLines();
oSection.Type = oSegA.Type;
oSection.Position = oSegA.PositionA;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegA.Size;
oSection.Data = oSegA.Data;
Sections.Add(oSection);
}
if (!oSegB.Data.IsEmpty)
{
oSegB.Display();
oSection = new SectionOfLines();
oSection.Type = oSegB.Type;
oSection.Position = oSegB.PositionB;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegB.Size;
oSection.Data = oSegB.Data;
Sections.Add(oSection);
}
}
else
{
if (!oSegB.Data.IsEmpty)
{
oSegB.Display();
oSection = new SectionOfLines();
oSection.Type = oSegB.Type;
oSection.Position = oSegB.PositionB;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegB.Size;
oSection.Data = oSegB.Data;
Sections.Add(oSection);
}
if (!oSegA.Data.IsEmpty)
{
oSegA.Display();
oSection = new SectionOfLines();
oSection.Type = oSegA.Type;
oSection.Position = oSegA.PositionA;
oSection.PositionA = oSegA.PositionA;
oSection.PositionB = oSegB.PositionB;
oSection.Size = oSegA.Size;
oSection.Data = oSegA.Data;
Sections.Add(oSection);
}
}
nCountA++;
nCountB++;
}
}
nCountA++;
nCountB++;
}
}
}
SignalEndOfReport();
}
/// <summary>
/// Construct a new block to contain the character element array contained in the specified block.
/// </summary>
/// <param name="poBlock">Block of character elements.</param>
public BlockOfCharacters(BlockOfCharacters poBlock)
{
maElements = (ElementChar[])poBlock.Elements;
}