lhdiff

A Lightweight Hybrid Approach for Tracking Source Lines.

Lhdiff provides a mapping of individual lines between two revisions of the same file. It provides a better mapping than Unix diff, and works independently of the file contents (programming language). See ARCHITECTURE.md for more details.

Install

go get github.com/oselvar/lhdiff

To install from source, see CONTRIBUTING.md

Usage

There are two ways to use lhdiff - as a commandline program, or as a library

Command line

lhdiff [--compact] left right

Example using git:

lhdiff --compact \
<( git show 400a62e39d39d231d8160002dfb7ed95a004278b:cmd/lhdiff/main.go ) \
<( git show 35f1ba7b554d69a07e59d6f69297d08599f4217c:cmd/lhdiff/main.go )

lhdiff --compact \
<( git show 085519173c4e6e76c425dac0a628f21ff0cdcfa8:lhdiff.go ) \
<( git show 4ae3495de0c31675940861592a3929df8154785f:lhdiff.go )

Library

left := `one two three four
eight
nine ten eleven twelve
thirteen fourteen fifteen`

right := `one two three four
nine ten twelve
five six BANANA seven eight
APPLE PEAR
thirteen fourteen fifteen
`

linePairs := Lhdiff(left, right, 4)
PrintLinePairs(linePairs, false)

// Output:
// 1,1
// 2,_
// 3,2
// 4,5

LICENSE

This is distributed under the MIT License.

oselvar / lhdiff

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