34 lines
923 B
Ruby
34 lines
923 B
Ruby
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# frozen_string_literal: true
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module Rouge
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module Lexers
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class Diff < RegexLexer
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title 'diff'
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desc 'Lexes unified diffs or patches'
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tag 'diff'
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aliases 'patch', 'udiff'
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filenames '*.diff', '*.patch'
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mimetypes 'text/x-diff', 'text/x-patch'
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def self.detect?(text)
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return true if text.start_with?('Index: ')
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return true if text =~ %r(\Adiff[^\n]*?\ba/[^\n]*\bb/)
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return true if text =~ /(---|[+][+][+]).*?\n(---|[+][+][+])/
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end
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state :root do
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rule(/^ .*$\n?/, Text)
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rule(/^---$\n?/, Text)
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rule(/^\+.*$\n?/, Generic::Inserted)
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rule(/^-+.*$\n?/, Generic::Deleted)
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rule(/^!.*$\n?/, Generic::Strong)
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rule(/^@.*$\n?/, Generic::Subheading)
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rule(/^([Ii]ndex|diff).*$\n?/, Generic::Heading)
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rule(/^=.*$\n?/, Generic::Heading)
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rule(/.*$\n?/, Text)
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end
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end
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end
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end
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