/// <summary>
/// Converts output from a command-line diff tool into LSP compatible text edits.
/// </summary>
public static TextEdit[] GetEdits(string documentText, string diffOutputText)
{
if (documentText == null)
{
throw new ArgumentNullException(nameof(documentText));
}
if (diffOutputText == null)
{
throw new ArgumentNullException(nameof(diffOutputText));
}
// Diff tools may print a header with the original/modified file names
// and that header must be removed for diff_match_patch.
if (diffOutputText.StartsWithOrdinal("---"))
{
var startIndex = diffOutputText.IndexOfOrdinal("@@");
if (startIndex >= 0)
{
diffOutputText = diffOutputText.Substring(startIndex);
}
// TODO: needed?
// Remove the text added by unified_diff
// # Work around missing newline (http://bugs.python.org/issue2142).
//patch = patch.replace(/\\ No newline at end of file[\r\n] /, '');
}
var patches = new diff_match_patch().patch_fromText(diffOutputText);
var edits = patches.SelectMany(p => GetEdits(documentText, p));
return(edits.ToArray());
}
