/// <summary>
/// TODO: description
/// </summary>
/// <param name="context"></param>
public void Run(ActionContext context)
{
if (!SourcePath.IsAbsolute && context?.BasePath == null)
{
throw new ArgumentException("The context BasePath must be specified when the SourcePath is relative.", nameof(context));
}
if (!TargetPath.IsAbsolute && context?.BasePath == null)
{
throw new ArgumentException("The context BasePath must be specified when the TargetPath is relative.", nameof(context));
}
if (Content != null && context?.ContentBasePath == null)
{
throw new ArgumentException("The context ContentBasePath must be specified when working with Content.", nameof(context));
}
if (SourcePath.IsDirectory || TargetPath.IsDirectory)
{
throw new NotSupportedException("Both the source and target paths must be files.");
}
string tempPatchPath = Utility.GetTempFilePath();
string tempTargetCopyPath = Utility.GetTempFilePath();
try
{
// get the absolute paths, rooted off of the context base path if necessary
Path sourcePath = SourcePath.IsAbsolute ? SourcePath : Path.Combine(context.BasePath, SourcePath);
Path targetPath = TargetPath.IsAbsolute ? TargetPath : Path.Combine(context.BasePath, TargetPath);
Logger?.Info("Patching {0} against {1} to {2} using the {3} algorithm", sourcePath, tempPatchPath, targetPath, Algorithm);
IPatcher patcher = Utility.GetPatcher(Algorithm);
// write the patch file to a temp location
Content.Save(Path.Combine(context.ContentBasePath, Content.Id + "\\"), tempPatchPath,
Overwrite); // TODO: specify remote content path format as part of context
// if source and target paths are the same, copy source to temp location first to patch against
if (SourcePath.Equals(TargetPath))
{
File.Copy(sourcePath, tempTargetCopyPath); // TODO: support for remote paths
patcher.Apply(tempTargetCopyPath, tempPatchPath, targetPath); // TODO: support for remote paths
}
else
{
patcher.Apply(sourcePath, tempPatchPath, targetPath); // TODO: support for remote paths
}
}
catch (Exception ex)
{
// swallow the exception and log a warning if optional, otherwise propagate upwards
if (Optional)
{
Logger?.Warn(ex, "Optional action failure.");
}
else
{
throw;
}
}
finally
{
File.Delete(tempPatchPath);
File.Delete(tempTargetCopyPath);
}
}