/// <summary>
/// Method creates patch from two loaded folders
/// </summary>
/// <param name="firstFolderFiles"></param>
/// <param name="secondFolderFiles"></param>
/// <param name="patch"></param>
private void CreatePatchFromFolders(List <FileProperties> firstFolderFiles, List <FileProperties> secondFolderFiles, List <string> patch)
{
foreach (FileProperties fp in firstFolderFiles)
{
if (fp.AbsolutePath != string.Empty)
{
FileProperties obj = secondFolderFiles.Find(x => x.AbsolutePath.Equals(fp.AbsolutePath));
if (obj != null && fp.fileData.Count != 0 && obj.fileData.Count != 0)
{
patch.AddRange(CreatePatch(fp.fileData, obj.fileData, DiffText(fp.fileData, obj.fileData, false), fp, obj));
}
}
else if (fp.children != null)
{
FileProperties obj = secondFolderFiles.Find(x => x.Name.Equals(fp.Name));
if (obj != null)
{
CreatePatchFromFolders(fp.children, obj.children, patch);
}
}
}
}
/// <summary>
/// Method creates patch from files difference objects
/// </summary>
/// <param name="differences"></param>
/// <returns></returns>
private List <string> CreatePatch(List <string> firstFile, List <string> secondFile, List <Difference> differences, FileProperties firstFileInfo, FileProperties secondFileInfo)
{
List <string> patch = new List <string>();
List <string> diffRange = new List <string>();
string lastAction = string.Empty;
int linesLevel = 0;
int firstRange = 0;
int secondRange = 0;
int firstIndex = 0;
int secondIndex = 0;
int deletedIndex, insertedIndex;
// if there are diffs beetwen files we create patch
if (differences.Count != 0)
{
patch.Add("--- " + firstFileInfo.FilePath + " " + DateTime.Now.ToString());
patch.Add("+++ " + secondFileInfo.FilePath + " " + DateTime.Now.ToString());
// Iterate every diff object and update first file
for (int x = 0; x < differences.Count; ++x)
{
// diffrence between deleted and inserted lines
// result give us 3 possible operations
int res = differences[x].deletedAmount - differences[x].insertedAmount;
// set indexes to patch file
deletedIndex = firstIndex + 1;
insertedIndex = secondIndex + 1;
// 1. if deleted and inserted are equal
if (res.Equals(0))
{
// complete start lines
for (int i = firstIndex; i < differences[x].deletedIndex; ++i)
{
diffRange.Add(firstFile[i]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
// Insert changed lines with modyfied style
for (int i = 0; i < differences[x].deletedAmount; ++i)
{
diffRange.Add("-" + firstFile[firstIndex]);
diffRange.Add("+" + secondFile[secondIndex]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
// complete lines to next diff
// there is more than 1 diff
if (x + 1 < differences.Count)
{
int size;
if (lastAction.Equals("d"))
{
size = Math.Min(differences[x + 1].deletedIndex, differences[x + 1].insertedIndex - linesLevel);
for (int i = firstIndex; i < size; ++i)
{
diffRange.Add(firstFile[i]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
}
else
{
size = Math.Min(differences[x + 1].deletedIndex - linesLevel, differences[x + 1].insertedIndex);
for (int i = secondIndex; i < size; ++i)
{
diffRange.Add(secondFile[i]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
}
}
// we are at last diff
else
{
for (int i = firstIndex; i < firstFile.Count; ++i)
{
diffRange.Add(firstFile[i]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
}
}
// 2. if deleted < inserted
if (res < 0)
{
if (lastAction.Equals("d"))
{
linesLevel *= -1;
}
// complete start lines to first file
for (int i = firstIndex; i < differences[x].insertedIndex + linesLevel; ++i)
{
diffRange.Add(firstFile[i]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
// if there is some changed lines
if (differences[x].deletedAmount > 0)
{
// we add changed lines to first file
for (int i = 0; i < differences[x].deletedAmount; ++i)
{
diffRange.Add("-" + firstFile[firstIndex]);
diffRange.Add("+" + secondFile[secondIndex]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
}
// add inserted lines
for (int i = 0; i < differences[x].insertedAmount - differences[x].deletedAmount; ++i)
{
diffRange.Add("+" + secondFile[secondIndex]);
++secondIndex; ++secondRange;
}
/// set actual line lvl
linesLevel += res;
lastAction = "i";
// complete lines to next diff
// there is more than 1 diff
if (x + 1 < differences.Count)
{
for (int i = secondIndex; i < Math.Min(differences[x + 1].deletedIndex - linesLevel, differences[x + 1].insertedIndex); ++i)
{
diffRange.Add(secondFile[i]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
}
// we are at last diff
else
{
for (int i = firstIndex; i < firstFile.Count; ++i)
{
diffRange.Add(firstFile[i]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
}
}
// 3. if deleted > inserted
if (res > 0)
{
if (lastAction.Equals("i"))
{
linesLevel *= -1;
}
// complete start lines to first file
for (int i = firstIndex; i < differences[x].deletedIndex; ++i)
{
diffRange.Add(firstFile[i]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
// if there is some changed lines
if (differences[x].insertedAmount > 0)
{
// we add changed lines to first file
for (int i = 0; i < differences[x].insertedAmount; ++i)
{
diffRange.Add("-" + firstFile[firstIndex]);
diffRange.Add("+" + secondFile[secondIndex]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
}
// add deleted lines
for (int i = 0; i < differences[x].deletedAmount - differences[x].insertedAmount; ++i)
{
diffRange.Add("-" + firstFile[firstIndex]);
++firstIndex; ++firstRange;
}
linesLevel -= res;
lastAction = "d";
// complete lines to next diff
// there is more than 1 diff
if (x + 1 < differences.Count)
{
for (int i = firstIndex; i < Math.Min(differences[x + 1].deletedIndex, differences[x + 1].insertedIndex - linesLevel); ++i)
{
diffRange.Add(firstFile[firstIndex]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
}
// we are at last diff
else
{
for (int i = firstIndex; i < firstFile.Count; ++i)
{
diffRange.Add(firstFile[i]);
++firstIndex; ++firstRange;
++secondIndex; ++secondRange;
}
}
}
// add range line and collection with lines
patch.Add("@@ -" + deletedIndex.ToString() + "," + firstRange.ToString() + " +" + insertedIndex.ToString() + "," + secondRange.ToString() + " @@");
patch.AddRange(diffRange);
// Clear diffrange collection
diffRange.Clear();
// init variables
firstRange = secondRange = 0;
}
}
return(patch);
}
/// <summary>
/// Method generates patch
/// </summary>
public List <string> GeneratePatch(FileProperties firstFileInfo, FileProperties secondFileInfo)
{
/// Creates file with changes (final version of patch)
return(CreatePatch(_firstFile, _secondFile, DiffText(_firstFile, _secondFile, false), firstFileInfo, secondFileInfo));
}
