static string GetTargetFile(string sourceFile, string rootDirectory)
{
var relativePath = FileEx.GetRelativePath(sourceFile, rootDirectory);
var filtered = relativePath.Split(Path.DirectorySeparatorChar)
.Where(x => !string.Equals(x, "mdsource", StringComparison.OrdinalIgnoreCase))
.ToArray();
var sourceTrimmed = Path.Combine(filtered);
var targetFile = Path.Combine(rootDirectory, sourceTrimmed);
// remove ".md" from ".source.md" then change ".source" to ".md"
targetFile = Path.ChangeExtension(Path.ChangeExtension(targetFile, null), ".md");
return(targetFile);
}
