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module Rugments
module Lexers
class Diff < RegexLexer
title 'diff'
desc 'Lexes unified diffs or patches'
tag 'diff'
aliases 'patch', 'udiff'
filenames '*.diff', '*.patch'
mimetypes 'text/x-diff', 'text/x-patch'
def self.analyze_text(text)
return 1 if text.start_with?('Index: ')
return 1 if text.start_with?('diff ')
# TODO: Have a look at pygments here, seems better
return 0.9 if text =~ /\A---.*?\n\+\+\+/m
end
state :root do
rule(/^ .*\n/, Text)
rule(/^\+.*\n/, Generic::Inserted)
# Do not highlight the delimiter line
# before the diffstat in email patches.
rule(/^-+ .*\n/, Generic::Deleted)
rule(/^!.*\n/, Generic::Strong)
rule(/^@.*\n/, Generic::Subheading)
rule(/^([Ii]ndex|diff).*\n/, Generic::Heading)
rule(/^=.*\n/, Generic::Heading)
rule(/.*\n/, Text)
end
end
end
end
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