texinfo.lua (9456B)
- -- Copyright 2014-2024 stef@ailleurs.land. See LICENSE.
- -- Plain Texinfo version 5.2 LPeg lexer
- -- Freely inspired from Mitchell work and valuable help from him too !
- -- Directives are processed (more or less) in the Reference Card Texinfo order Reference Card
- -- page for each directive group is in comment for reference
- --[[
- Note: Improving Fold Points use with Texinfo
- At the very beginning of your Texinfo file, it could be wised to insert theses alias :
- @alias startchapter = comment
- @alias endchapter = comment
- Then use this to begin each chapter :
- @endchapter --------------------------------------------------------------------
- @chapter CHAPTER TITLE
- @startchapter ------------------------------------------------------------------
- With the use of Scintilla's `SCI_FOLDALL(SC_FOLDACTION_TOGGLE)` or Textadept's
- `buffer:fold_all(buffer.FOLDACTION_TOGGLE)`, you have then a nice chapter folding, useful with
- large documents.
- ]]
- local lexer = lexer
- local token, word_match = lexer.token, lexer.word_match
- local P, S = lpeg.P, lpeg.S
- local lex = lexer.new(...)
- -- Directives.
- lex:add_rule('directive',
- lex:tag('command', ('@end' * lexer.space^1 + '@') * lex:word_match('directive', true)))
- -- Chapters.
- lex:add_rule('chapter', lex:tag('command.section',
- ('@end' * lexer.space^1 + '@') * lex:word_match('chapter', true)))
- -- Common keywords.
- lex:add_rule('keyword', lex:tag(lexer.KEYWORD, ('@end' * lexer.space^1 + '@') *
- lex:word_match(lexer.KEYWORD, true)))
- -- Italics
- local nested_braces = lexer.range('{', '}', false, false, true)
- lex:add_rule('emph', lex:tag(lexer.ITALIC, '@emph' * nested_braces))
- -- Bold
- lex:add_rule('strong', lex:tag(lexer.BOLD, '@strong' * nested_braces))
- -- Identifiers
- lex:add_rule('identifier', lex:tag(lexer.IDENTIFIER, lexer.word))
- -- Strings.
- lex:add_rule('string', lex:tag(lexer.STRING, nested_braces))
- -- Numbers.
- lex:add_rule('number', lex:tag(lexer.NUMBER, lexer.number))
- -- Comments.
- local line_comment = lexer.to_eol('@c', true)
- -- local line_comment_long = lexer.to_eol('@comment', true)
- local block_comment = lexer.range('@ignore', '@end ignore')
- lex:add_rule('comment', lex:tag(lexer.COMMENT, line_comment + block_comment))
- -- Fold points.
- lex:add_fold_point('command', '@titlepage', '@end titlepage')
- lex:add_fold_point('command', '@copying', '@end copying')
- lex:add_fold_point('command', '@ifset', '@end ifset')
- lex:add_fold_point('command', '@tex', '@end tex')
- lex:add_fold_point('command', '@itemize', '@end itemize')
- lex:add_fold_point('command', '@enumerate', '@end enumerate')
- lex:add_fold_point('command', '@multitable', '@end multitable')
- lex:add_fold_point('command', '@example', '@end example')
- lex:add_fold_point('command', '@smallexample', '@end smallexample')
- lex:add_fold_point('command', '@cartouche', '@end cartouche')
- lex:add_fold_point('command', '@startchapter', '@end startchapter')
- -- Word lists.
- lex:set_word_list('directive', {
- 'end',
- -- Custom keywords for chapter folding
- 'startchapter', 'endchapter',
- -- List and tables (page 2, column 2)
- 'itemize', 'enumerate',
- -- Beginning a Texinfo document (page 1, column 1)
- 'titlepage', 'copying',
- -- Block environments (page 2, column 1)
- 'cartouche',
- -- Block environments > Displays using fixed-width fonts (page 2, column 2)
- 'example', 'smallexample',
- -- List and tables (page 2, column 2)
- 'multitable',
- -- Floating Displays (page 2, column 3)
- 'float', 'listoffloats', 'caption', 'shortcaption', 'image',
- -- Floating Displays > Footnotes (page 2, column 3)
- 'footnote', 'footnotestyle',
- -- Conditionally (in)visible text > Output formats (page 3, column 3)
- 'ifdocbook', 'ifhtml', 'ifinfo', 'ifplaintext', 'iftex', 'ifxml', 'ifnotdocbook', 'ifnothtml',
- 'ifnotplaintext', 'ifnottex', 'ifnotxml', 'ifnotinfo', 'inlinefmt', 'inlinefmtifelse',
- -- Conditionally (in)visible text > Raw formatter text (page 4, column 1)
- 'docbook', 'html', 'tex', 'xml', 'inlineraw',
- -- Conditionally (in)visible text > Documents variables (page 4, column 1)
- 'set', 'clear', 'value', 'ifset', 'ifclear', 'inlineifset', 'inlineifclear',
- -- Conditionally (in)visible text > Testing for commands (page 4, column 1)
- 'ifcommanddefined', 'ifcommandnotdefined', 'end',
- -- Defining new Texinfo commands (page 4, column 1)
- 'alias', 'macro', 'unmacro', 'definfounclose',
- -- File inclusion (page 4, column 1)
- 'include', 'verbatiminclude',
- -- Formatting and headers footers for TeX (page 4, column 1)
- 'allowcodebreaks', 'finalout', 'fonttextsize',
- -- Formatting and headers footers for TeX > paper size (page 4, column 2)
- 'smallbook', 'afourpaper', 'afivepaper', 'afourlatex', 'afourwide', 'pagesizes',
- -- Formatting and headers footers for TeX > Page headers and footers (page 4, column 2)
- -- not implemented
- -- Document preferences (page 4, column 2)
- -- not implemented
- -- Ending a Texinfo document (page 4, column 2)
- 'bye'
- })
- lex:set_word_list('chapter', {
- -- Chapter structuring (page 1, column 2)
- 'lowersections', 'raisesections', 'part',
- -- Chapter structuring > Numbered, included in contents (page 1, column 2)
- 'chapter', 'centerchap',
- -- Chapter structuring > Context-dependent, included in contents (page 1, column 2)
- 'section', 'subsection', 'subsubsection',
- -- Chapter structuring > Unumbered, included in contents (page 1, column 2)
- 'unnumbered', 'unnumberedsec', 'unnumberedsubsec', 'unnumberedsubsection', 'unnumberedsubsubsec',
- 'unnumberedsubsubsection',
- -- Chapter structuring > Letter and numbered, included in contents (page 1, column 2)
- 'appendix', 'appendixsec', 'appendixsection', 'appendixsubsec', 'appendixsubsection',
- 'appendixsubsubsec', 'appendixsubsubsection',
- -- Chapter structuring > Unumbered, not included in contents, no new page (page 1, column 3)
- 'chapheading', 'majorheading', 'heading', 'subheading', 'subsubheading'
- })
- lex:set_word_list(lexer.KEYWORD, {
- 'end',
- -- Beginning a Texinfo document (page 1, column 1)
- 'setfilename', 'settitle', 'insertcopying',
- -- Beginning a Texinfo document > Internationlization (page 1, column 1)
- 'documentencoding', 'documentlanguage', 'frenchspacing',
- -- Beginning a Texinfo document > Info directory specification and HTML document description
- -- (page 1, column 1)
- 'dircategory', 'direntry', 'documentdescription',
- -- Beginning a Texinfo document > Titre pages (page 1, column 1)
- 'shorttitlepage', 'center', 'titlefont', 'title', 'subtitle', 'author',
- -- Beginning a Texinfo document > Tables of contents (page 1, column 2)
- 'shortcontents', 'summarycontents', 'contents', 'setcontentsaftertitlepage',
- 'setshortcontentsaftertitlepage',
- -- Nodes (page 1, column 2)
- 'node', 'top', 'anchor', 'novalidate',
- -- Menus (page 1, column 2)
- 'menu', 'detailmenu',
- -- Cross references > Within the Info system (page 1, column 3)
- 'xref', 'pxref', 'ref', 'inforef', 'xrefautomaticsectiontitle',
- -- Cross references > Outside of info (page 1, column 3)
- 'url', 'cite',
- -- Marking text > Markup for regular text (page 1, column 3)
- 'var', 'dfn', 'acronym', 'abbr',
- -- Marking text > Markup for litteral text (page 1, column 3)
- 'code', 'file', 'command', 'env', 'option', 'kbd', 'key', 'email', 'indicateurl', 'samp', 'verb',
- -- Marking text > GUI sequences (page 2, column 1)
- 'clicksequence', 'click', 'clickstyle', 'arrow',
- -- Marking text > Math (page 2, column 1)
- 'math', 'minus', 'geq', 'leq',
- -- Marking text > Explicit font selection (page 2, column 1)
- 'sc', 'r', 'i', 'slanted', 'b', 'sansserif', 't',
- -- Block environments (page 2, column 1)
- 'noindent', 'indent', 'exdent',
- -- Block environments > Normally filled displays using regular text fonts (page 2, column 1)
- 'quotation', 'smallquotation', 'indentedblock', 'smallindentedblock', 'raggedright',
- -- Block environments > Line-for-line displays using regular test fonts (page 2, column 2)
- 'format', 'smallformat', 'display', 'smalldisplay', 'flushleft', 'flushright',
- -- Block environments > Displays using fixed-width fonts (page 2, column 2)
- 'lisp', 'smalllisp', 'verbatim',
- -- List and tables (page 2, column 2)
- 'table', 'ftable', 'vtable', 'tab', 'item', 'itemx', 'headitem', 'headitemfont', 'asis',
- -- Indices (page 2, column 3)
- 'cindex', 'findex', 'vindex', 'kindex', 'pindex', 'tindex', 'defcodeindex', 'syncodeindex',
- 'synindex', 'printindex',
- -- Insertions within a paragraph > Characters special to Texinfo (page 2, column 3)
- '@', '{', '}', 'backslashcar', 'comma', 'hashcar', ':', '.', '?', '!', 'dmn',
- -- Insertions within a paragraph > Accents (page 3, column 1)
- -- not implemented
- -- Insertions within a paragraph > Non-English characters (page 3, column 1)
- -- not implemented
- -- Insertions within a paragraph > Other text characters an logos (page 3, column 1)
- 'bullet', 'dots', 'enddots', 'euro', 'pounds', 'textdegree', 'copyright', 'registeredsymbol',
- 'TeX', 'LaTeX', 'today', 'guillemetleft', 'guillementright', 'guillemotleft', 'guillemotright',
- -- Insertions within a paragraph > Glyphs for code examples (page 3, column 2)
- 'equiv', 'error', 'expansion', 'point', 'print', 'result',
- -- Making and preventing breaks (page 3, column 2)
- '*', '/', '-', 'hyphenation', 'tie', 'w', 'refill',
- -- Vertical space (page 3, column 2)
- 'sp', 'page', 'need', 'group', 'vskip'
- -- Definition commands (page 3, column 2)
- -- not implemented
- })
- lexer.property['scintillua.comment'] = '@c'
- return lex