dnote/pkg/cli/utils/diff/diff.go
2025-10-31 23:41:21 -07:00

45 lines
1.3 KiB
Go

/* Copyright 2025 Dnote Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Package diff provides line-by-line diff feature by wrapping
// a package github.com/sergi/go-diff/diffmatchpatch
package diff
import (
"time"
"github.com/sergi/go-diff/diffmatchpatch"
)
const (
// DiffEqual represents an equal diff
DiffEqual = diffmatchpatch.DiffEqual
// DiffInsert represents an insert diff
DiffInsert = diffmatchpatch.DiffInsert
// DiffDelete represents a delete diff
DiffDelete = diffmatchpatch.DiffDelete
)
// Do computes line-by-line diff between two strings
func Do(s1, s2 string) (diffs []diffmatchpatch.Diff) {
dmp := diffmatchpatch.New()
dmp.DiffTimeout = time.Hour
s1Chars, s2Chars, arr := dmp.DiffLinesToRunes(s1, s2)
diffs = dmp.DiffMainRunes(s1Chars, s2Chars, false)
diffs = dmp.DiffCharsToLines(diffs, arr)
return diffs
}