Function findMatchInFile

worktree.go:981–1022

findMatchInFile takes a single File, worktree name and GrepOptions, and returns a slice of GrepResult containing the result of regex pattern matching in the given file.

(file *object.File, treeName string, opts *GrepOptions)

// and returns a slice of GrepResult containing the result of regex pattern
// matching in the given file.
func findMatchInFile(file *object.File, treeName string, opts *GrepOptions) ([]GrepResult, error) {
	var grepResults []GrepResult

	content, err := file.Contents()
	if err != nil {
		return grepResults, err
	}

	// Split the file content and parse line-by-line.
	contentByLine := strings.Split(content, "\n")
	for lineNum, cnt := range contentByLine {
		addToResult := false

		// Match the patterns and content. Break out of the loop once a
		// match is found.
		for _, pattern := range opts.Patterns {
			if pattern != nil && pattern.MatchString(cnt) {
				// Add to result only if invert match is not enabled.
				if !opts.InvertMatch {
					addToResult = true
					break
				}
			} else if opts.InvertMatch {
				// If matching fails, and invert match is enabled, add to
				// results.
				addToResult = true
				break
			}
		}

		if addToResult {
			grepResults = append(grepResults, GrepResult{
				FileName:   file.Name,
				LineNumber: lineNum + 1,
				Content:    cnt,
				TreeName:   treeName,
			})
		}
	}

	return grepResults, nil
}

// will walk up the directory tree removing all encountered empty
// directories, not just the one containing this file