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41 lines
1.1 KiB
41 lines
1.1 KiB
package dehub
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import (
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"fmt"
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"gopkg.in/src-d/go-git.v4/plumbing"
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"gopkg.in/src-d/go-git.v4/plumbing/filemode"
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"gopkg.in/src-d/go-git.v4/plumbing/object"
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)
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type fileChanged struct {
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path string
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fromMode, toMode filemode.FileMode
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fromHash, toHash plumbing.Hash
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}
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func calcDiff(from, to *object.Tree) ([]fileChanged, error) {
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changes, err := object.DiffTree(from, to)
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if err != nil {
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return nil, fmt.Errorf("could not calculate tree diff: %w", err)
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}
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filesChanged := make([]fileChanged, len(changes))
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for i, change := range changes {
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if from := change.From; from.Name != "" {
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filesChanged[i].path = from.Name
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filesChanged[i].fromMode = from.TreeEntry.Mode
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filesChanged[i].fromHash = from.TreeEntry.Hash
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}
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if to := change.To; to.Name != "" {
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if exPath := filesChanged[i].path; exPath != "" && exPath != to.Name {
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panic(fmt.Sprintf("DiffTree entry changed path from %q to %q", exPath, to.Name))
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}
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filesChanged[i].path = to.Name
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filesChanged[i].toMode = to.TreeEntry.Mode
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filesChanged[i].toHash = to.TreeEntry.Hash
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}
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}
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return filesChanged, nil
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}
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