61 lines
1.8 KiB
Ruby
61 lines
1.8 KiB
Ruby
module Gitlab
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class Highlight
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def self.highlight(blob_name, blob_content, repository: nil, nowrap: true, plain: false)
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new(blob_name, blob_content, nowrap: nowrap, repository: repository).
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highlight(blob_content, continue: false, plain: plain)
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end
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def self.highlight_lines(repository, ref, file_name)
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blob = repository.blob_at(ref, file_name)
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return [] unless blob
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blob.load_all_data!(repository)
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highlight(file_name, blob.data, repository: repository).lines.map!(&:html_safe)
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end
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attr_reader :lexer
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def initialize(blob_name, blob_content, repository: nil, nowrap: true)
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@blob_name = blob_name
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@blob_content = blob_content
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@repository = repository
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@formatter = rouge_formatter(nowrap: nowrap)
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@lexer = custom_language || begin
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Rouge::Lexer.guess(filename: blob_name, source: blob_content).new
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rescue Rouge::Lexer::AmbiguousGuess => e
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e.alternatives.sort_by(&:tag).first
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end
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end
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def highlight(text, continue: true, plain: false)
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if plain
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@formatter.format(Rouge::Lexers::PlainText.lex(text)).html_safe
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else
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@formatter.format(@lexer.lex(text, continue: continue)).html_safe
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end
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rescue
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@formatter.format(Rouge::Lexers::PlainText.lex(text)).html_safe
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end
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private
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def custom_language
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language_name = @repository && @repository.gitattribute(@blob_name, 'gitlab-language')
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return nil unless language_name
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Rouge::Lexer.find_fancy(language_name)
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end
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def rouge_formatter(options = {})
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options = options.reverse_merge(
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nowrap: true,
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cssclass: 'code highlight',
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lineanchors: true,
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lineanchorsid: 'LC'
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)
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Rouge::Formatters::HTMLGitlab.new(options)
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end
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end
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end
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