ParseFile parses a file unified diff.

ParseMultiFile parses a multi-file unified diff.

LineAdded represents added line preceded by '+'.

LineDeleted represents deleted line preceded by '-'.

LineUnchanged represents unchanged, contextual line preceded by ' '.

@@ -1,3 +1,4 @@.

+++ newfile.

ErrInvalidHunkRange represents invalid line of hunk range.

FileDiff represents a unified diff for a single file.

Hunk represents change hunks that contain the line differences in the file.

Line represents a diff line.

LineType represents the type of diff line.