public void TestSplit()
{
TextFile primary = new TextFile();
primary.AddLines(new[] { "a", "b", "c", "d", "e", "f" });
TextFile secondary = new TextFile();
secondary.AddLines(new[] { "1", "2", "3", "4", "5", "6" });
ModificationCollection modifications = new ModificationCollection(primary, secondary);
modifications.AddNoChanged(0, 2);
modifications.AddReplaced(2, 0, 2);
modifications.AddAdded(4, 2);
Modification[] splited = modifications[1].Split(1); // неверный индекс
Assert.AreEqual(splited.Length, 1);
Assert.AreSame(splited[0], modifications[1]);
splited = modifications[1].Split(2); // граничный индекс
Assert.AreEqual(splited.Length, 1);
Assert.AreSame(splited[0], modifications[1]);
splited = modifications[1].Split(3); // индекс в середине
Assert.AreEqual(splited.Length, 2);
}
public void TestFindModificationByPrimaryIndex()
{
TextFile primary = new TextFile();
primary.AddLines(new[] {"a","b","c","d","e","f"});
TextFile secondary = new TextFile();
secondary.AddLines(new[] { "1", "2", "3", "4", "5", "6" });
ModificationCollection modifications = new ModificationCollection(primary, secondary);
modifications.AddNoChanged(0, 2);
modifications.AddReplaced(2, 0, 2);
modifications.AddNoChanged(4, 2);
Modification wanted = modifications.FindModificationByPrimaryIndex(1);
Assert.AreEqual(wanted.Index, 0);
wanted = modifications.FindModificationByPrimaryIndex(3);
Assert.AreEqual(wanted.Index, 1);
wanted = modifications.FindModificationByPrimaryIndex(4);
Assert.AreEqual(wanted.Index, 2);
wanted = modifications.FindModificationByPrimaryIndex(5);
Assert.AreEqual(wanted.Index, 2);
}
public Merger()
{
ServerFile = new TextFile();
User1File = new TextFile();
User2File = new TextFile();
ServerUser1Modifications = new ModificationCollection(ServerFile, User1File);
ServerUser2Modifications = new ModificationCollection(ServerFile, User2File);
MergedModifications = new ModificationCollection();
}
public void TestSplit()
{
TextFile primary = new TextFile();
primary.AddLines(new[] { "a", "b", "c", "d", "e", "f" });
TextFile secondary = new TextFile();
secondary.AddLines(new[] { "1", "2", "3", "4", "5", "6" });
ModificationCollection modifications = new ModificationCollection(primary, secondary);
modifications.AddNoChanged(0, 2);
modifications.AddReplaced(2, 0, 2);
modifications.AddAdded(4, 2);
modifications.Split(3); // индекс в середине
Assert.AreEqual(modifications.Count, 4);
}
public void TestAdded()
{
TextFile file1 = new TextFile();
file1.AddLine("1");
file1.AddLine("3");
TextFile file2 = new TextFile();
file2.AddLine("1");
file2.AddLine("2");
file2.AddLine("3");
FileComparer fileComparer = new FileComparer();
ModificationCollection report = fileComparer.Compare(file1, file2);
ModificationAreEqual(report[0], "NoChanged", 0, 0, 1);
ModificationAreEqual(report[1], "Added", -1, 1, 1);
ModificationAreEqual(report[2], "NoChanged", 1, 2, 1);
}
public void TestEmptyFiles()
{
TextFile emptyFile = new TextFile();
TextFile file2 = new TextFile();
file2.AddLine("public class MyClass");
file2.AddLine("{");
file2.AddLine("}");
FileComparer fileComparer = new FileComparer();
ModificationCollection report = fileComparer.Compare(emptyFile, file2);
ModificationAreEqual(report[0], "Added", -1, 0, 3);
report = fileComparer.Compare(file2, emptyFile);
ModificationAreEqual(report[0], "Removed", 0, -1, 3);
report = fileComparer.Compare(emptyFile, emptyFile);
Assert.AreEqual(report.Count, 0);
}
public void TestReplaced2()
{
TextFile file1 = new TextFile();
file1.AddLine("1");
file1.AddLine("4");
file1.AddLine("3");
TextFile file2 = new TextFile();
file2.AddLine("2");
FileComparer fileComparer = new FileComparer();
ModificationCollection report = fileComparer.Compare(file1, file2);
ModificationAreEqual(report[0], "Replaced", 0, 0, 1);
ModificationAreEqual(report[1], "Removed", 1, -1, 2);
}
public void TestMethod1()
{
TextFile file1 = new TextFile();
file1.AddLine("public class MyClass");
file1.AddLine("{");
file1.AddLine(" public MyClass()");
file1.AddLine(" { }");
file1.AddLine();
file1.AddLine(" public string StringProperty");
file1.AddLine(" {");
file1.AddLine(" get;");
file1.AddLine(" set;");
file1.AddLine(" }");
file1.AddLine("}");
TextFile file2 = new TextFile();
file2.AddLine("public class MyClass");
file2.AddLine("{");
file2.AddLine(" public MyClass()");
file2.AddLine(" { }");
file2.AddLine();
file2.AddLine(" public int MyMethod(int value)");
file2.AddLine(" {");
file2.AddLine(" Console.WriteLine(value);");
file2.AddLine(" }");
file2.AddLine("}");
FileComparer fileComparer = new FileComparer();
ModificationCollection report = fileComparer.Compare(file1, file2);
ModificationAreEqual(report[0], "NoChanged", 0, 0, 5);
ModificationAreEqual(report[1], "Replaced", 5, 5, 1);
ModificationAreEqual(report[2], "NoChanged", 6, 6, 1);
ModificationAreEqual(report[3], "Replaced", 7, 7, 1);
ModificationAreEqual(report[4], "Removed", 8, -1, 1);
ModificationAreEqual(report[5], "NoChanged", 9, 8, 2);
}
/// <summary>
/// Найти длину совпадения.
/// </summary>
private static int GetPrimaryMatchLength(TextFile primary, int primaryIndex, TextFile secondary, int secondaryIndex, int maxLength)
{
int matchCount;
for (matchCount = 0; matchCount < maxLength; matchCount++)
{
if (secondary[secondaryIndex + matchCount].CompareTo(primary[primaryIndex + matchCount]) != 0)
{
break;
}
}
return matchCount;
}
public ModificationCollection Compare(TextFile primary, TextFile secondary)
{
_primary = primary;
_secondary = secondary;
ModificationCollection result = new ModificationCollection(primary, secondary);
if (primary.LineCount == 0 && secondary.LineCount == 0)
{
// два пустых файла
_primary = null;
_secondary = null;
return result;
}
if (primary.LineCount == 0)
{
if (secondary.LineCount > 0)
{
// первый файл пустой, а второй имеет строки
result.AddAdded(0, secondary.LineCount);
}
_primary = null;
_secondary = null;
return result;
}
if (secondary.LineCount == 0)
{
if (primary.LineCount > 0)
{
// первый файл имеет строки, а второй пустой
result.AddRemoved(0, primary.LineCount);
}
_primary = null;
_secondary = null;
return result;
}
List<Area> areas = new List<Area>();
DivideIntoAreas(0, primary.LineCount - 1, 0, secondary.LineCount - 1, areas);
areas.Sort(Area.SecondaryIndexComparer);
int primaryIndex = 0;
int secondaryIndex = 0;
Area last = null;
foreach (Area area in areas)
{
if (DetermineModification(primaryIndex, area.PrimaryIndex, secondaryIndex, area.SecondaryIndex, result) ||
last == null)
{
result.AddNoChanged(area.PrimaryIndex, area.Length);
}
primaryIndex = area.PrimaryIndex + area.Length;
secondaryIndex = area.SecondaryIndex + area.Length;
last = area;
}
// этот вызов решает проблему, когда файлы совершенно разные
// это граничная ситуация, областей пересечения нет
DetermineModification(primaryIndex, primary.LineCount, secondaryIndex, secondary.LineCount, result);
return result;
}
public ModificationCollection Compare(TextFile primary, TextFile secondary)
{
_primary = primary;
_secondary = secondary;
ModificationCollection result = new ModificationCollection(primary, secondary);
if (primary.LineCount == 0 && secondary.LineCount == 0)
{
// два пустых файла
_primary = null;
_secondary = null;
return(result);
}
if (primary.LineCount == 0)
{
if (secondary.LineCount > 0)
{
// первый файл пустой, а второй имеет строки
result.AddAdded(0, secondary.LineCount);
}
_primary = null;
_secondary = null;
return(result);
}
if (secondary.LineCount == 0)
{
if (primary.LineCount > 0)
{
// первый файл имеет строки, а второй пустой
result.AddRemoved(0, primary.LineCount);
}
_primary = null;
_secondary = null;
return(result);
}
List <Area> areas = new List <Area>();
DivideIntoAreas(0, primary.LineCount - 1, 0, secondary.LineCount - 1, areas);
areas.Sort(Area.SecondaryIndexComparer);
int primaryIndex = 0;
int secondaryIndex = 0;
Area last = null;
foreach (Area area in areas)
{
if (DetermineModification(primaryIndex, area.PrimaryIndex, secondaryIndex, area.SecondaryIndex, result) ||
last == null)
{
result.AddNoChanged(area.PrimaryIndex, area.Length);
}
primaryIndex = area.PrimaryIndex + area.Length;
secondaryIndex = area.SecondaryIndex + area.Length;
last = area;
}
// этот вызов решает проблему, когда файлы совершенно разные
// это граничная ситуация, областей пересечения нет
DetermineModification(primaryIndex, primary.LineCount, secondaryIndex, secondary.LineCount, result);
return(result);
}
