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Go-difflib is a partial port of python 3 difflib package. Its main goalwas to make unified and context diff available in pure Go, mostly fortesting purposes.

The following class and functions (and related tests) have be ported:

• SequenceMatcher
• unified_diff()
• context_diff()

$ go get github.com/pmezard/go-difflib/difflib

Diffs are configured with Unified (or ContextDiff) structures, and canbe output to an io.Writer or returned as a string.

diff:=UnifiedDiff{A:difflib.SplitLines("foo\nbar\n"),B:difflib.SplitLines("foo\nbaz\n"),FromFile:"Original",ToFile:"Current",Context:3,}text,_:=GetUnifiedDiffString(diff)fmt.Printf(text)

would output:

--- Original+++ Current@@ -1,3 +1,3 @@ foo-bar+baz