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// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package repofiles
import (
"strings"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/services/gitdiff"
)
// GetDiffPreview produces and returns diff result of a file which is not yet committed.
func GetDiffPreview(repo *models.Repository, branch, treePath, content string) (*gitdiff.Diff, error) {
if branch == "" {
branch = repo.DefaultBranch
}
t, err := NewTemporaryUploadRepository(repo)
if err != nil {
return nil, err
}
defer t.Close()
if err := t.Clone(branch); err != nil {
return nil, err
}
if err := t.SetDefaultIndex(); err != nil {
return nil, err
}
// Add the object to the database
objectHash, err := t.HashObject(strings.NewReader(content))
if err != nil {
return nil, err
}
// Add the object to the index
if err := t.AddObjectToIndex("100644", objectHash, treePath); err != nil {
return nil, err
}
return t.DiffIndex()
}
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