71 lines
2 KiB
Ruby
71 lines
2 KiB
Ruby
module Gitlab
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class Highlight
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def self.highlight(blob_name, blob_content, repository: nil, plain: false)
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new(blob_name, blob_content, 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 :blob_name
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def initialize(blob_name, blob_content, repository: nil)
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@formatter = Rouge::Formatters::HTMLGitlab
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@repository = repository
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@blob_name = blob_name
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@blob_content = blob_content
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end
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def highlight(text, continue: true, plain: false)
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highlighted_text = highlight_text(text, continue: continue, plain: plain)
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highlighted_text = link_dependencies(text, highlighted_text) if blob_name
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highlighted_text
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end
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def lexer
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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::Guesser::Ambiguous => 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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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 highlight_text(text, continue: true, plain: false)
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if plain
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highlight_plain(text)
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else
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highlight_rich(text, continue: continue)
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end
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end
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def highlight_plain(text)
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@formatter.format(Rouge::Lexers::PlainText.lex(text)).html_safe
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end
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def highlight_rich(text, continue: true)
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@formatter.format(lexer.lex(text, continue: continue), tag: lexer.tag).html_safe
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rescue
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highlight_plain(text)
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end
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def link_dependencies(text, highlighted_text)
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Gitlab::DependencyLinker.link(blob_name, text, highlighted_text)
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end
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end
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end
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