diffpatch.go

package main

import (
	"fmt"

	"github.com/sergi/go-diff/diffmatchpatch"
)

const (
	src = "Hello world!"
	dst = "Hello Config Hub!"

	src2 = "Foo.\nHello world!.\nBar."
	src3 = "Foo.\nGoodbye world!.\nBar."
)

func main() {
	dmp := diffmatchpatch.New()

	srcChars, dstChars, lineArray := dmp.DiffLinesToChars(src, dst)
	diffs := dmp.DiffMain(srcChars, dstChars, false)
	diffs = dmp.DiffCharsToLines(diffs, lineArray)
	patches := dmp.PatchMake(src, diffs)

	fmt.Println(dmp.PatchApply(patches, src2))
	fmt.Println(dmp.PatchApply(patches, src3))
}