Add bin and edit workflow

2026-09-16 13:11:16 -06:00
parent c8ac4fcae5
commit 4cee170d66
17576 changed files with 895740 additions and 2 deletions
@@ -0,0 +1,115 @@
+# -*- coding: utf-8 -*- #
+# frozen_string_literal: true
+
+# Regular expressions based on https://github.com/SaswatPadhi/prismjs-bibtex
+# and https://github.com/alecthomas/chroma/blob/master/lexers/b/bibtex.go
+
+module Rouge
+  module Lexers
+    class BibTeX < RegexLexer
+      title 'BibTeX'
+      desc "BibTeX"
+      tag 'bibtex'
+      aliases 'bib'
+      filenames '*.bib'
+
+      valid_punctuation = Regexp.quote("@!$&.\\:;<>?[]^`|~*/+-")
+      valid_name = /[a-z_#{valid_punctuation}][\w#{valid_punctuation}]*/io
+
+      state :root do
+        mixin :whitespace
+
+        rule %r/@(#{valid_name})/o do |m|
+          match = m[1].downcase
+
+          if match == "comment"
+            token Comment
+          elsif match == "preamble"
+            token Name::Class
+            push :closing_brace
+            push :value
+            push :opening_brace
+          elsif match == "string"
+            token Name::Class
+            push :closing_brace
+            push :field
+            push :opening_brace
+          else
+            token Name::Class
+            push :closing_brace
+            push :command_body
+            push :opening_brace
+          end
+        end
+
+        rule %r/.+/, Comment
+      end
+
+      state :opening_brace do
+        mixin :whitespace
+        rule %r/[{(]/, Punctuation, :pop!
+      end
+
+      state :closing_brace do
+        mixin :whitespace
+        rule %r/[})]/, Punctuation, :pop!
+      end
+
+      state :command_body do
+        mixin :whitespace
+        rule %r/[^\s\,\}]+/ do
+          token Name::Label
+          pop!
+          push :fields
+        end
+      end
+
+      state :fields do
+        mixin :whitespace
+        rule %r/,/, Punctuation, :field
+        rule(//) { pop! }
+      end
+
+      state :field do
+        mixin :whitespace
+        rule valid_name do
+          token Name::Attribute
+          push :value
+          push :equal_sign
+        end
+        rule(//) { pop! }
+      end
+
+      state :equal_sign do
+        mixin :whitespace
+        rule %r/=/, Punctuation, :pop!
+      end
+
+      state :value do
+        mixin :whitespace
+        rule valid_name, Name::Variable
+        rule %r/"/, Literal::String, :quoted_string
+        rule %r/\{/, Literal::String, :braced_string
+        rule %r/\d+/, Literal::Number
+        rule %r/#/, Punctuation
+        rule(//) { pop! }
+      end
+
+      state :quoted_string do
+        rule %r/\{/, Literal::String, :braced_string
+        rule %r/"/, Literal::String, :pop!
+        rule %r/[^\{\"]+/, Literal::String
+      end
+
+      state :braced_string do
+        rule %r/\{/, Literal::String, :braced_string
+        rule %r/\}/, Literal::String, :pop!
+        rule %r/[^\{\}]+/, Literal::String
+      end
+
+      state :whitespace do
+        rule %r/\s+/, Text
+      end
+    end
+  end
+end