/// <summary>
/// Take a TextFileInformation object, diff it if it hasn't been diffed, and create a VisualDiffOutput object that
/// represents the output of the diff in a form that can be displayed to the user.
/// </summary>
/// <remarks>
/// If the Prevgen file does not exist, it will perform a diff, then copy the NewGen file into the PrevGen temporarily,
/// so that all changes will show as User changes.
/// </remarks>
/// <param name="fileInfo">The TextFileInformation object that has the information on the diffed files.</param>
/// <returns>A VisualDiffOutput object containing all of the information needed to show the output of the diff to the user.</returns>
private VisualDiffOutput ProcessDiff(FileInformation<string> fileInfo)
{
if (fileInfo == null) throw new ArgumentNullException("fileInfo");
VisualDiffOutput output = new VisualDiffOutput();
bool virtualPrevGen = false;
string oldPrevGenFilePath = null;
if (fileInfo.CurrentDiffResult.DiffPerformedSuccessfully == false)
fileInfo.PerformDiff();
if (fileInfo.PrevGenFile.HasContents == false)
{
virtualPrevGen = true;
oldPrevGenFilePath = fileInfo.PrevGenFile.FilePath;
fileInfo.PrevGenFile.ReplaceContents(fileInfo.NewGenFile.GetContents(), true);
}
output.DiffType = fileInfo.CurrentDiffResult.DiffType;
switch (fileInfo.CurrentDiffResult.DiffType)
{
case TypeOfDiff.ExactCopy:
ProcessExactCopy(fileInfo, output);
break;
case TypeOfDiff.TemplateChangeOnly:
ProcessTemplateChange(fileInfo, output);
break;
case TypeOfDiff.UserChangeOnly:
ProcessUserChange(fileInfo, output);
break;
case TypeOfDiff.UserAndTemplateChange:
ProcessUserAndTemplateChange(fileInfo, output);
break;
case TypeOfDiff.Conflict:
case TypeOfDiff.Warning:
ProcessUserAndTemplateChange(fileInfo, output);
break;
}
if (virtualPrevGen)
{
fileInfo.PrevGenFile.FilePath = oldPrevGenFilePath;
if (oldPrevGenFilePath != null)
{
fileInfo.PrevGenFile.ReplaceContents("", false);
}
}
return output;
}
/// <summary>
/// Take a TextFileInformation object, diff it if it hasn't been diffed, and create a VisualDiffOutput object that
/// represents the output of the diff in a form that can be displayed to the user.
/// </summary>
/// <remarks>
/// If the Prevgen file does not exist, it will perform a diff, then copy the NewGen file into the PrevGen temporarily,
/// so that all changes will show as User changes.
/// </remarks>
/// <param name="fileInfo">The TextFileInformation object that has the information on the diffed files.</param>
/// <returns>A VisualDiffOutput object containing all of the information needed to show the output of the diff to the user.</returns>
private VisualDiffOutput ProcessDiff(FileInformation<string> fileInfo)
{
if (fileInfo == null) throw new ArgumentNullException("fileInfo");
VisualDiffOutput output = new VisualDiffOutput();
bool virtualPrevGen = false;
string oldPrevGenFilePath = null;
if (fileInfo.CurrentDiffResult.DiffPerformedSuccessfully == false)
fileInfo.PerformDiff();
if (fileInfo.PrevGenFile.HasContents == false)
{
virtualPrevGen = true;
oldPrevGenFilePath = fileInfo.PrevGenFile.FilePath;
fileInfo.PrevGenFile.ReplaceContents(fileInfo.NewGenFile.GetContents(), true);
}
output.DiffType = fileInfo.CurrentDiffResult.DiffType;
switch (fileInfo.CurrentDiffResult.DiffType)
{
case TypeOfDiff.ExactCopy:
ProcessExactCopy(fileInfo, output);
break;
case TypeOfDiff.TemplateChangeOnly:
ProcessTemplateChange(fileInfo, output);
break;
case TypeOfDiff.UserChangeOnly:
ProcessUserChange(fileInfo, output);
break;
case TypeOfDiff.UserAndTemplateChange:
ProcessUserAndTemplateChange(fileInfo, output);
break;
case TypeOfDiff.Conflict:
case TypeOfDiff.Warning:
ProcessUserAndTemplateChange(fileInfo, output);
break;
}
if (virtualPrevGen)
{
fileInfo.PrevGenFile.FilePath = oldPrevGenFilePath;
if (oldPrevGenFilePath != null)
{
fileInfo.PrevGenFile.ReplaceContents("", false);
}
}
return output;
}
