38 lines
1.0 KiB
Ruby
38 lines
1.0 KiB
Ruby
|
# frozen_string_literal: true
|
||
|
|
|
||
|
|
module Rouge
|
||
|
|
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.detect?(text)
|
||
|
|
return true if text.start_with?('Index: ')
|
||
|
|
return true if text =~ %r(\Adiff[^\n]*?\ba/[^\n]*\bb/)
|
||
|
|
return true if text =~ /(---|[+][+][+]).*?\n(---|[+][+][+])/
|
||
|
|
end
|
||
|
|
|
||
|
|
state :root do
|
||
|
|
rule(/^ .*$\n?/, Text)
|
||
|
|
rule(/^---$\n?/, Punctuation)
|
||
|
|
rule(/^[+>]+.*$\n?/, Generic::Inserted)
|
||
|
|
rule(/^\+.*$\n?/, Generic::Inserted)
|
||
|
|
rule(/^[-<]+.*$\n?/, Generic::Deleted)
|
||
|
|
rule(/^!.*$\n?/, Generic::Strong)
|
||
|
|
rule(/^([Ii]ndex|diff).*$\n?/, Generic::Heading)
|
||
|
|
rule(/^(@@[^@]*@@)([^\n]*\n)/) do
|
||
|
|
groups Punctuation, Text
|
||
|
|
end
|
||
|
|
rule(/^\w.*$\n?/, Punctuation)
|
||
|
|
rule(/^=.*$\n?/, Generic::Heading)
|
||
|
|
rule(/\s.*$\n?/, Text)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|