Method ParseDiff

internal/git/patch.go:117–173

(path string, mode PatchMode, revision string)

}

func (r *Repository) ParseDiff(path string, mode PatchMode, revision string) ([]Hunk, error) {
	var diffCmd []string
	diffCmd = append(diffCmd, mode.DiffCmd...)

	if diffAlgo, err := r.GetConfig("diff.algorithm"); err == nil && diffAlgo != "" {
		diffCmd = append([]string{diffCmd[0], "--diff-algorithm=" + diffAlgo}, diffCmd[1:]...)
	}

	if revision != "" {
		reference := revision
		if r.IsInitialCommit() && revision == "HEAD" {
			emptyTree, err := r.GetEmptyTree()
			if err != nil {
				return nil, err
			}
			reference = emptyTree
		}
		diffCmd = append(diffCmd, reference)
	}

	diffCmd = append(diffCmd, "--no-color", "--", path)

	diffLines, err := r.RunCommandLines(diffCmd...)
	if err != nil {
		return nil, err
	}

	var coloredLines []string
	if r.GetColorBool("color.diff") {
		colorCmd := append([]string{}, mode.DiffCmd...)

		if diffAlgo, err := r.GetConfig("diff.algorithm"); err == nil && diffAlgo != "" {
			colorCmd = append([]string{colorCmd[0], "--diff-algorithm=" + diffAlgo}, colorCmd[1:]...)
		}

		if revision != "" {
			reference := revision
			if r.IsInitialCommit() && revision == "HEAD" {
				emptyTree, err := r.GetEmptyTree()
				if err != nil {
					return nil, err
				}
				reference = emptyTree
			}
			colorCmd = append(colorCmd, reference)
		}

		colorCmd = append(colorCmd, "--color=always", "--", path)
		coloredLines, _ = r.RunCommandLines(colorCmd...)
	}

	if len(coloredLines) == 0 {
		coloredLines = diffLines
	}

	return r.parseHunks(diffLines, coloredLines)
}