module Gitlab class Highlight def self.highlight(blob_name, blob_content, nowrap: true) new(blob_name, blob_content, nowrap: nowrap).highlight(blob_content, continue: false) end def self.highlight_lines(repository, ref, file_name) blob = repository.blob_at(ref, file_name) return [] unless blob highlight(file_name, blob.data).lines.map!(&:html_safe) end def initialize(blob_name, blob_content, nowrap: true) @formatter = rouge_formatter(nowrap: nowrap) @lexer = Rouge::Lexer.guess(filename: blob_name, source: blob_content).new rescue Rouge::Lexers::PlainText end def highlight(text, continue: true) @formatter.format(@lexer.lex(text, continue: continue)).html_safe rescue @formatter.format(Rouge::Lexers::PlainText.lex(text)).html_safe end private def rouge_formatter(options = {}) options = options.reverse_merge( nowrap: true, cssclass: 'code highlight', lineanchors: true, lineanchorsid: 'LC' ) Rouge::Formatters::HTMLGitlab.new(options) end end end