Function NewDiff

internal/gitutil/diff.go:126–170

NewDiff returns a new wrapper of given git.Diff.

(oldDiff *git.Diff)

// NewDiff returns a new wrapper of given git.Diff.
func NewDiff(oldDiff *git.Diff) *Diff {
	newDiff := &Diff{
		Diff:  oldDiff,
		Files: make([]*DiffFile, oldDiff.NumFiles()),
	}

	// FIXME: detect encoding while parsing.
	var buf bytes.Buffer
	for i := range oldDiff.Files {
		buf.Reset()

		newDiff.Files[i] = &DiffFile{
			DiffFile: oldDiff.Files[i],
			Sections: make([]*DiffSection, oldDiff.Files[i].NumSections()),
		}

		for j := range oldDiff.Files[i].Sections {
			newDiff.Files[i].Sections[j] = &DiffSection{
				DiffSection: oldDiff.Files[i].Sections[j],
			}

			for k := range newDiff.Files[i].Sections[j].Lines {
				buf.WriteString(newDiff.Files[i].Sections[j].Lines[k].Content)
				buf.WriteString("\n")
			}
		}

		charsetLabel, err := tool.DetectEncoding(buf.Bytes())
		if charsetLabel != "UTF-8" && err == nil {
			encoding, _ := charset.Lookup(charsetLabel)
			if encoding != nil {
				d := encoding.NewDecoder()
				for j := range newDiff.Files[i].Sections {
					for k := range newDiff.Files[i].Sections[j].Lines {
						if c, _, err := transform.String(d, newDiff.Files[i].Sections[j].Lines[k].Content); err == nil {
							newDiff.Files[i].Sections[j].Lines[k].Content = c
						}
					}
				}
			}
		}
	}

	return newDiff
}

// ParseDiff parses the diff from given io.Reader.
func ParseDiff(r io.Reader, maxFiles, maxFileLines, maxLineChars int) (*Diff, error) {