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package omd
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Source file omd_parser.ml
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4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459(***********************************************************************) (* omd: Markdown frontend in OCaml *) (* (c) 2013-2014 by Philippe Wang <philippe.wang@cl.cam.ac.uk> *) (* Licence : ISC *) (* http://www.isc.org/downloads/software-support-policy/isc-license/ *) (***********************************************************************) let sdebug = true open Printf open Omd_representation open Omd_utils module L = Omd_lexer type r = Omd_representation.t (** accumulator (beware, reversed tokens) *) and p = Omd_representation.tok list (** context information: previous elements *) and l = Omd_representation.tok list (** tokens to parse *) and main_loop = ?html:bool -> r -> (* accumulator (beware, reversed tokens) *) p -> (* info: previous elements *) l -> (* tokens to parse *) Omd_representation.t (* final result *) (** most important loop *) (** N.B. Please do not use tabulations in your Markdown file! *) module type Env = sig val rc: Omd_representation.ref_container val extensions : Omd_representation.extensions val default_lang : string val gh_uemph_or_bold_style : bool val blind_html : bool val strict_html : bool val warning : bool val warn_error : bool end module Unit = struct end module Default_env (Unit:sig end) : Env = struct let rc = new Omd_representation.ref_container let extensions = [] let default_lang = "" let gh_uemph_or_bold_style = true let blind_html = false let strict_html = false let warning = false let warn_error = false end module Make (Env:Env) = struct include Env let warn = Omd_utils.warn ~we:warn_error (** set of known HTML codes *) let htmlcodes_set = StringSet.of_list (* This list should be checked... *) (* list extracted from: http://www.w3.org/TR/html4/charset.html *) [ "AElig"; "Aacute"; "Acirc"; "Agrave"; "Alpha"; "Aring"; "Atilde"; "Auml"; "Beta"; "Ccedil"; "Chi"; "Dagger"; "Delta"; "ETH"; "Eacute"; "Ecirc"; "Egrave"; "Epsilon"; "Eta"; "Euml"; "Gamma"; "Iacute"; "Icirc"; "Igrave"; "Iota"; "Iuml"; "Kappa"; "Lambda"; "Mu"; "Ntilde"; "Nu"; "OElig"; "Oacute"; "Ocirc"; "Ograve"; "Omega"; "Omicron"; "Oslash"; "Otilde"; "Ouml"; "Phi"; "Pi"; "Prime"; "Psi"; "Rho"; "Scaron"; "Sigma"; "THORN"; "Tau"; "Theta"; "Uacute"; "Ucirc"; "Ugrave"; "Upsilon"; "Uuml"; "Xi"; "Yacute"; "Yuml"; "Zeta"; "aacute"; "acirc"; "acute"; "aelig"; "agrave"; "alefsym"; "alpha"; "amp"; "and"; "ang"; "aring"; "asymp"; "atilde"; "auml"; "bdquo"; "beta"; "brvbar"; "bull"; "cap"; "ccedil"; "cedil"; "cent"; "chi"; "circ"; "clubs"; "cong"; "copy"; "crarr"; "cup"; "curren"; "dArr"; "dagger"; "darr"; "deg"; "delta"; "diams"; "divide"; "eacute"; "ecirc"; "egrave"; "empty"; "emsp"; "ensp"; "epsilon"; "equiv"; "eta"; "eth"; "euml"; "euro"; "exist"; "fnof"; "forall"; "frac12"; "frac14"; "frac34"; "frasl"; "gamma"; "ge"; "gt"; "hArr"; "harr"; "hearts"; "hellip"; "iacute"; "icirc"; "iexcl"; "igrave"; "image"; "infin"; "int"; "iota"; "iquest"; "isin"; "iuml"; "kappa"; "lArr"; "lambda"; "lang"; "laquo"; "larr"; "lceil"; "ldquo"; "le"; "lfloor"; "lowast"; "loz"; "lrm"; "lsaquo"; "lsquo"; "lt"; "macr"; "mdash"; "micro"; "middot"; "minus"; "mu"; "nabla"; "nbsp"; "ndash"; "ne"; "ni"; "not"; "notin"; "nsub"; "ntilde"; "nu"; "oacute"; "ocirc"; "oelig"; "ograve"; "oline"; "omega"; "omicron"; "oplus"; "or"; "ordf"; "ordm"; "oslash"; "otilde"; "otimes"; "ouml"; "para"; "part"; "permil"; "perp"; "phi"; "pi"; "piv"; "plusmn"; "pound"; "prime"; "prod"; "prop"; "psi"; "quot"; "rArr"; "radic"; "rang"; "raquo"; "rarr"; "rceil"; "rdquo"; "real"; "reg"; "rfloor"; "rho"; "rlm"; "rsaquo"; "rsquo"; "sbquo"; "scaron"; "sdot"; "sect"; "shy"; "sigma"; "sigmaf"; "sim"; "spades"; "sub"; "sube"; "sum"; "sup"; "sup1"; "sup2"; "sup3"; "supe"; "szlig"; "tau"; "there4"; "theta"; "thetasym"; "thinsp"; "thorn"; "tilde"; "times"; "trade"; "uArr"; "uacute"; "uarr"; "ucirc"; "ugrave"; "uml"; "upsih"; "upsilon"; "uuml"; "weierp"; "xi"; "yacute"; "yen"; "yuml"; "zeta"; "zwj"; "zwnj"; ] (** set of known inline HTML tags *) let = (StringSet.of_list (* from https://developer.mozilla.org/en-US/docs/HTML/Inline_elements *) [ "b";"big";"i";"small";"tt"; "abbr";"acronym";"cite";"code";"dfn";"em";"kbd";"strong";"samp";"var"; "a";"bdo";"br";"img";"map";"object";"q";"span";"sub";"sup"; "button";"input";"label";"select";"textarea";]) (** N.B. it seems that there is no clear distinction between inline tags and block-level tags: in HTML4 it was not clear, in HTML5 it's even more complicated. So, the choice *here* is to specify a set of tags considered as "inline", cf. [inline_htmltags_set]. So there will be inline tags, non-inline tags, and unknown tags.*) (** set of HTML tags that may appear out of a body *) let = StringSet.of_list [ "title"; "link"; "meta"; "style"; "html"; "head"; "body"; ] (** All known HTML tags *) let = StringSet.union notinbodytags (StringSet.union inline_htmltags_set (StringSet.of_list [ "a";"abbr";"acronym";"address";"applet";"area";"article";"aside" ;"audio";"b";"base";"basefont";"bdi";"bdo";"big";"blockquote" ;"br";"button";"canvas";"caption";"center";"cite";"code";"col" ;"colgroup";"command";"datalist";"dd";"del";"details";"dfn" ;"dialog";"dir";"div";"dl";"dt";"em";"embed";"fieldset" ;"figcaption";"figure";"font";"footer";"form";"frame";"frameset" ;"h2";"h3";"h4";"h5";"h6" ;"h1";"header";"hr";"i";"iframe";"img";"input";"ins";"kbd" ;"keygen";"label";"legend";"li";"map";"mark";"menu";"meter";"nav" ;"noframes";"noscript";"object";"ol";"optgroup";"option";"output" ;"p";"param";"pre";"progress";"q";"rp";"rt";"ruby";"s";"samp" ;"script";"section";"select";"small";"source";"span";"strike" ;"strong";"style";"sub";"summary";"sup";"table";"tbody";"td" ;"textarea";"tfoot";"th";"thead";"time";"tr";"track";"tt";"u" ;"ul";"var";"video";"wbr" ])) (** This functions fixes bad lexing trees, which may be built when extraction a portion of another lexing tree. *) let fix l = let rec loop accu = function (* code to generate what follows... List.iter (fun e -> Printf.printf " | %s::%s::tl -> if trackfix then eprintf \"%s 1\\n%!\"; loop accu (%ss 0::tl) | %ss n::%s::tl -> if trackfix then eprintf \"%s 2\\n%!\"; loop accu (%ss(n+1)::tl) | %s::%ss n::tl -> if trackfix then eprintf \"%s 3\\n%!\"; loop accu (%ss(n+1)::tl) | %ss a::%ss b::tl -> if trackfix then eprintf \"%s 4\\n%!\"; loop accu (%ss(a+b+2)::tl)" e e e e e e e e e e e e e e e e) ["Ampersand"; "At"; "Backquote"; "Backslash"; "Bar"; "Caret"; "Cbrace"; "Colon"; "Comma"; "Cparenthesis"; "Cbracket"; "Dollar"; "Dot"; "Doublequote"; "Exclamation"; "Equal"; "Greaterthan"; "Hash"; "Lessthan"; "Minus"; "Newline"; "Obrace"; "Oparenthesis"; "Obracket"; "Percent"; "Plus"; "Question"; "Quote"; "Semicolon"; "Slash"; "Space"; "Star"; "Tab"; "Tilde"; "Underscore"]; print_string "| x::tl -> loop (x::accu) tl\n| [] -> List.rev accu\n"; *) | Ampersand::Ampersand::tl -> if trackfix then eprintf "(OMD) Ampersand 1\n"; loop accu (Ampersands 0::tl) | Ampersands n::Ampersand::tl -> if trackfix then eprintf "(OMD) Ampersand 2\n"; loop accu (Ampersands(n+1)::tl) | Ampersand::Ampersands n::tl -> if trackfix then eprintf "(OMD) Ampersand 3\n"; loop accu (Ampersands(n+1)::tl) | Ampersands a::Ampersands b::tl -> if trackfix then eprintf "(OMD) Ampersand 4\n"; loop accu (Ampersands(a+b+2)::tl) | At::At::tl -> if trackfix then eprintf "(OMD) At 1\n"; loop accu (Ats 0::tl) | Ats n::At::tl -> if trackfix then eprintf "(OMD) At 2\n"; loop accu (Ats(n+1)::tl) | At::Ats n::tl -> if trackfix then eprintf "(OMD) At 3\n"; loop accu (Ats(n+1)::tl) | Ats a::Ats b::tl -> if trackfix then eprintf "(OMD) At 4\n"; loop accu (Ats(a+b+2)::tl) | Backquote::Backquote::tl -> if trackfix then eprintf "(OMD) Backquote 1\n"; loop accu (Backquotes 0::tl) | Backquotes n::Backquote::tl -> if trackfix then eprintf "(OMD) Backquote 2\n"; loop accu (Backquotes(n+1)::tl) | Backquote::Backquotes n::tl -> if trackfix then eprintf "(OMD) Backquote 3\n"; loop accu (Backquotes(n+1)::tl) | Backquotes a::Backquotes b::tl -> if trackfix then eprintf "(OMD) Backquote 4\n"; loop accu (Backquotes(a+b+2)::tl) | Backslash::Backslash::tl -> if trackfix then eprintf "(OMD) Backslash 1\n"; loop accu (Backslashs 0::tl) | Backslashs n::Backslash::tl -> if trackfix then eprintf "(OMD) Backslash 2\n"; loop accu (Backslashs(n+1)::tl) | Backslash::Backslashs n::tl -> if trackfix then eprintf "(OMD) Backslash 3\n"; loop accu (Backslashs(n+1)::tl) | Backslashs a::Backslashs b::tl -> if trackfix then eprintf "(OMD) Backslash 4\n"; loop accu (Backslashs(a+b+2)::tl) | Bar::Bar::tl -> if trackfix then eprintf "(OMD) Bar 1\n"; loop accu (Bars 0::tl) | Bars n::Bar::tl -> if trackfix then eprintf "(OMD) Bar 2\n"; loop accu (Bars(n+1)::tl) | Bar::Bars n::tl -> if trackfix then eprintf "(OMD) Bar 3\n"; loop accu (Bars(n+1)::tl) | Bars a::Bars b::tl -> if trackfix then eprintf "(OMD) Bar 4\n"; loop accu (Bars(a+b+2)::tl) | Caret::Caret::tl -> if trackfix then eprintf "(OMD) Caret 1\n"; loop accu (Carets 0::tl) | Carets n::Caret::tl -> if trackfix then eprintf "(OMD) Caret 2\n"; loop accu (Carets(n+1)::tl) | Caret::Carets n::tl -> if trackfix then eprintf "(OMD) Caret 3\n"; loop accu (Carets(n+1)::tl) | Carets a::Carets b::tl -> if trackfix then eprintf "(OMD) Caret 4\n"; loop accu (Carets(a+b+2)::tl) | Cbrace::Cbrace::tl -> if trackfix then eprintf "(OMD) Cbrace 1\n"; loop accu (Cbraces 0::tl) | Cbraces n::Cbrace::tl -> if trackfix then eprintf "(OMD) Cbrace 2\n"; loop accu (Cbraces(n+1)::tl) | Cbrace::Cbraces n::tl -> if trackfix then eprintf "(OMD) Cbrace 3\n"; loop accu (Cbraces(n+1)::tl) | Cbraces a::Cbraces b::tl -> if trackfix then eprintf "(OMD) Cbrace 4\n"; loop accu (Cbraces(a+b+2)::tl) | Colon::Colon::tl -> if trackfix then eprintf "(OMD) Colon 1\n"; loop accu (Colons 0::tl) | Colons n::Colon::tl -> if trackfix then eprintf "(OMD) Colon 2\n"; loop accu (Colons(n+1)::tl) | Colon::Colons n::tl -> if trackfix then eprintf "(OMD) Colon 3\n"; loop accu (Colons(n+1)::tl) | Colons a::Colons b::tl -> if trackfix then eprintf "(OMD) Colon 4\n"; loop accu (Colons(a+b+2)::tl) | Comma::Comma::tl -> if trackfix then eprintf "(OMD) Comma 1\n"; loop accu (Commas 0::tl) | Commas n::Comma::tl -> if trackfix then eprintf "(OMD) Comma 2\n"; loop accu (Commas(n+1)::tl) | Comma::Commas n::tl -> if trackfix then eprintf "(OMD) Comma 3\n"; loop accu (Commas(n+1)::tl) | Commas a::Commas b::tl -> if trackfix then eprintf "(OMD) Comma 4\n"; loop accu (Commas(a+b+2)::tl) | Cparenthesis::Cparenthesis::tl -> if trackfix then eprintf "(OMD) Cparenthesis 1\n"; loop accu (Cparenthesiss 0::tl) | Cparenthesiss n::Cparenthesis::tl -> if trackfix then eprintf "(OMD) Cparenthesis 2\n"; loop accu (Cparenthesiss(n+1)::tl) | Cparenthesis::Cparenthesiss n::tl -> if trackfix then eprintf "(OMD) Cparenthesis 3\n"; loop accu (Cparenthesiss(n+1)::tl) | Cparenthesiss a::Cparenthesiss b::tl -> if trackfix then eprintf "(OMD) Cparenthesis 4\n"; loop accu (Cparenthesiss(a+b+2)::tl) | Cbracket::Cbracket::tl -> if trackfix then eprintf "(OMD) Cbracket 1\n"; loop accu (Cbrackets 0::tl) | Cbrackets n::Cbracket::tl -> if trackfix then eprintf "(OMD) Cbracket 2\n"; loop accu (Cbrackets(n+1)::tl) | Cbracket::Cbrackets n::tl -> if trackfix then eprintf "(OMD) Cbracket 3\n"; loop accu (Cbrackets(n+1)::tl) | Cbrackets a::Cbrackets b::tl -> if trackfix then eprintf "(OMD) Cbracket 4\n"; loop accu (Cbrackets(a+b+2)::tl) | Dollar::Dollar::tl -> if trackfix then eprintf "(OMD) Dollar 1\n"; loop accu (Dollars 0::tl) | Dollars n::Dollar::tl -> if trackfix then eprintf "(OMD) Dollar 2\n"; loop accu (Dollars(n+1)::tl) | Dollar::Dollars n::tl -> if trackfix then eprintf "(OMD) Dollar 3\n"; loop accu (Dollars(n+1)::tl) | Dollars a::Dollars b::tl -> if trackfix then eprintf "(OMD) Dollar 4\n"; loop accu (Dollars(a+b+2)::tl) | Dot::Dot::tl -> if trackfix then eprintf "(OMD) Dot 1\n"; loop accu (Dots 0::tl) | Dots n::Dot::tl -> if trackfix then eprintf "(OMD) Dot 2\n"; loop accu (Dots(n+1)::tl) | Dot::Dots n::tl -> if trackfix then eprintf "(OMD) Dot 3\n"; loop accu (Dots(n+1)::tl) | Dots a::Dots b::tl -> if trackfix then eprintf "(OMD) Dot 4\n"; loop accu (Dots(a+b+2)::tl) | Doublequote::Doublequote::tl -> if trackfix then eprintf "(OMD) Doublequote 1\n"; loop accu (Doublequotes 0::tl) | Doublequotes n::Doublequote::tl -> if trackfix then eprintf "(OMD) Doublequote 2\n"; loop accu (Doublequotes(n+1)::tl) | Doublequote::Doublequotes n::tl -> if trackfix then eprintf "(OMD) Doublequote 3\n"; loop accu (Doublequotes(n+1)::tl) | Doublequotes a::Doublequotes b::tl -> if trackfix then eprintf "(OMD) Doublequote 4\n"; loop accu (Doublequotes(a+b+2)::tl) | Exclamation::Exclamation::tl -> if trackfix then eprintf "(OMD) Exclamation 1\n"; loop accu (Exclamations 0::tl) | Exclamations n::Exclamation::tl -> if trackfix then eprintf "(OMD) Exclamation 2\n"; loop accu (Exclamations(n+1)::tl) | Exclamation::Exclamations n::tl -> if trackfix then eprintf "(OMD) Exclamation 3\n"; loop accu (Exclamations(n+1)::tl) | Exclamations a::Exclamations b::tl -> if trackfix then eprintf "(OMD) Exclamation 4\n"; loop accu (Exclamations(a+b+2)::tl) | Equal::Equal::tl -> if trackfix then eprintf "(OMD) Equal 1\n"; loop accu (Equals 0::tl) | Equals n::Equal::tl -> if trackfix then eprintf "(OMD) Equal 2\n"; loop accu (Equals(n+1)::tl) | Equal::Equals n::tl -> if trackfix then eprintf "(OMD) Equal 3\n"; loop accu (Equals(n+1)::tl) | Equals a::Equals b::tl -> if trackfix then eprintf "(OMD) Equal 4\n"; loop accu (Equals(a+b+2)::tl) | Greaterthan::Greaterthan::tl -> if trackfix then eprintf "(OMD) Greaterthan 1\n"; loop accu (Greaterthans 0::tl) | Greaterthans n::Greaterthan::tl -> if trackfix then eprintf "(OMD) Greaterthan 2\n"; loop accu (Greaterthans(n+1)::tl) | Greaterthan::Greaterthans n::tl -> if trackfix then eprintf "(OMD) Greaterthan 3\n"; loop accu (Greaterthans(n+1)::tl) | Greaterthans a::Greaterthans b::tl -> if trackfix then eprintf "(OMD) Greaterthan 4\n"; loop accu (Greaterthans(a+b+2)::tl) | Hash::Hash::tl -> if trackfix then eprintf "(OMD) Hash 1\n"; loop accu (Hashs 0::tl) | Hashs n::Hash::tl -> if trackfix then eprintf "(OMD) Hash 2\n"; loop accu (Hashs(n+1)::tl) | Hash::Hashs n::tl -> if trackfix then eprintf "(OMD) Hash 3\n"; loop accu (Hashs(n+1)::tl) | Hashs a::Hashs b::tl -> if trackfix then eprintf "(OMD) Hash 4\n"; loop accu (Hashs(a+b+2)::tl) | Lessthan::Lessthan::tl -> if trackfix then eprintf "(OMD) Lessthan 1\n"; loop accu (Lessthans 0::tl) | Lessthans n::Lessthan::tl -> if trackfix then eprintf "(OMD) Lessthan 2\n"; loop accu (Lessthans(n+1)::tl) | Lessthan::Lessthans n::tl -> if trackfix then eprintf "(OMD) Lessthan 3\n"; loop accu (Lessthans(n+1)::tl) | Lessthans a::Lessthans b::tl -> if trackfix then eprintf "(OMD) Lessthan 4\n"; loop accu (Lessthans(a+b+2)::tl) | Minus::Minus::tl -> if trackfix then eprintf "(OMD) Minus 1\n"; loop accu (Minuss 0::tl) | Minuss n::Minus::tl -> if trackfix then eprintf "(OMD) Minus 2\n"; loop accu (Minuss(n+1)::tl) | Minus::Minuss n::tl -> if trackfix then eprintf "(OMD) Minus 3\n"; loop accu (Minuss(n+1)::tl) | Minuss a::Minuss b::tl -> if trackfix then eprintf "(OMD) Minus 4\n"; loop accu (Minuss(a+b+2)::tl) | Newline::Newline::tl -> if trackfix then eprintf "(OMD) Newline 1\n"; loop accu (Newlines 0::tl) | Newlines n::Newline::tl -> if trackfix then eprintf "(OMD) Newline 2\n"; loop accu (Newlines(n+1)::tl) | Newline::Newlines n::tl -> if trackfix then eprintf "(OMD) Newline 3\n"; loop accu (Newlines(n+1)::tl) | Newlines a::Newlines b::tl -> if trackfix then eprintf "(OMD) Newline 4\n"; loop accu (Newlines(a+b+2)::tl) | Obrace::Obrace::tl -> if trackfix then eprintf "(OMD) Obrace 1\n"; loop accu (Obraces 0::tl) | Obraces n::Obrace::tl -> if trackfix then eprintf "(OMD) Obrace 2\n"; loop accu (Obraces(n+1)::tl) | Obrace::Obraces n::tl -> if trackfix then eprintf "(OMD) Obrace 3\n"; loop accu (Obraces(n+1)::tl) | Obraces a::Obraces b::tl -> if trackfix then eprintf "(OMD) Obrace 4\n"; loop accu (Obraces(a+b+2)::tl) | Oparenthesis::Oparenthesis::tl -> if trackfix then eprintf "(OMD) Oparenthesis 1\n"; loop accu (Oparenthesiss 0::tl) | Oparenthesiss n::Oparenthesis::tl -> if trackfix then eprintf "(OMD) Oparenthesis 2\n"; loop accu (Oparenthesiss(n+1)::tl) | Oparenthesis::Oparenthesiss n::tl -> if trackfix then eprintf "(OMD) Oparenthesis 3\n"; loop accu (Oparenthesiss(n+1)::tl) | Oparenthesiss a::Oparenthesiss b::tl -> if trackfix then eprintf "(OMD) Oparenthesis 4\n"; loop accu (Oparenthesiss(a+b+2)::tl) | Obracket::Obracket::tl -> if trackfix then eprintf "(OMD) Obracket 1\n"; loop accu (Obrackets 0::tl) | Obrackets n::Obracket::tl -> if trackfix then eprintf "(OMD) Obracket 2\n"; loop accu (Obrackets(n+1)::tl) | Obracket::Obrackets n::tl -> if trackfix then eprintf "(OMD) Obracket 3\n"; loop accu (Obrackets(n+1)::tl) | Obrackets a::Obrackets b::tl -> if trackfix then eprintf "(OMD) Obracket 4\n"; loop accu (Obrackets(a+b+2)::tl) | Percent::Percent::tl -> if trackfix then eprintf "(OMD) Percent 1\n"; loop accu (Percents 0::tl) | Percents n::Percent::tl -> if trackfix then eprintf "(OMD) Percent 2\n"; loop accu (Percents(n+1)::tl) | Percent::Percents n::tl -> if trackfix then eprintf "(OMD) Percent 3\n"; loop accu (Percents(n+1)::tl) | Percents a::Percents b::tl -> if trackfix then eprintf "(OMD) Percent 4\n"; loop accu (Percents(a+b+2)::tl) | Plus::Plus::tl -> if trackfix then eprintf "(OMD) Plus 1\n"; loop accu (Pluss 0::tl) | Pluss n::Plus::tl -> if trackfix then eprintf "(OMD) Plus 2\n"; loop accu (Pluss(n+1)::tl) | Plus::Pluss n::tl -> if trackfix then eprintf "(OMD) Plus 3\n"; loop accu (Pluss(n+1)::tl) | Pluss a::Pluss b::tl -> if trackfix then eprintf "(OMD) Plus 4\n"; loop accu (Pluss(a+b+2)::tl) | Question::Question::tl -> if trackfix then eprintf "(OMD) Question 1\n"; loop accu (Questions 0::tl) | Questions n::Question::tl -> if trackfix then eprintf "(OMD) Question 2\n"; loop accu (Questions(n+1)::tl) | Question::Questions n::tl -> if trackfix then eprintf "(OMD) Question 3\n"; loop accu (Questions(n+1)::tl) | Questions a::Questions b::tl -> if trackfix then eprintf "(OMD) Question 4\n"; loop accu (Questions(a+b+2)::tl) | Quote::Quote::tl -> if trackfix then eprintf "(OMD) Quote 1\n"; loop accu (Quotes 0::tl) | Quotes n::Quote::tl -> if trackfix then eprintf "(OMD) Quote 2\n"; loop accu (Quotes(n+1)::tl) | Quote::Quotes n::tl -> if trackfix then eprintf "(OMD) Quote 3\n"; loop accu (Quotes(n+1)::tl) | Quotes a::Quotes b::tl -> if trackfix then eprintf "(OMD) Quote 4\n"; loop accu (Quotes(a+b+2)::tl) | Semicolon::Semicolon::tl -> if trackfix then eprintf "(OMD) Semicolon 1\n"; loop accu (Semicolons 0::tl) | Semicolons n::Semicolon::tl -> if trackfix then eprintf "(OMD) Semicolon 2\n"; loop accu (Semicolons(n+1)::tl) | Semicolon::Semicolons n::tl -> if trackfix then eprintf "(OMD) Semicolon 3\n"; loop accu (Semicolons(n+1)::tl) | Semicolons a::Semicolons b::tl -> if trackfix then eprintf "(OMD) Semicolon 4\n"; loop accu (Semicolons(a+b+2)::tl) | Slash::Slash::tl -> if trackfix then eprintf "(OMD) Slash 1\n"; loop accu (Slashs 0::tl) | Slashs n::Slash::tl -> if trackfix then eprintf "(OMD) Slash 2\n"; loop accu (Slashs(n+1)::tl) | Slash::Slashs n::tl -> if trackfix then eprintf "(OMD) Slash 3\n"; loop accu (Slashs(n+1)::tl) | Slashs a::Slashs b::tl -> if trackfix then eprintf "(OMD) Slash 4\n"; loop accu (Slashs(a+b+2)::tl) | Space::Space::tl -> if trackfix then eprintf "(OMD) Space 1\n"; loop accu (Spaces 0::tl) | Spaces n::Space::tl -> if trackfix then eprintf "(OMD) Space 2\n"; loop accu (Spaces(n+1)::tl) | Space::Spaces n::tl -> if trackfix then eprintf "(OMD) Space 3\n"; loop accu (Spaces(n+1)::tl) | Spaces a::Spaces b::tl -> if trackfix then eprintf "(OMD) Space 4\n"; loop accu (Spaces(a+b+2)::tl) | Star::Star::tl -> if trackfix then eprintf "(OMD) Star 1\n"; loop accu (Stars 0::tl) | Stars n::Star::tl -> if trackfix then eprintf "(OMD) Star 2\n"; loop accu (Stars(n+1)::tl) | Star::Stars n::tl -> if trackfix then eprintf "(OMD) Star 3\n"; loop accu (Stars(n+1)::tl) | Stars a::Stars b::tl -> if trackfix then eprintf "(OMD) Star 4\n"; loop accu (Stars(a+b+2)::tl) | Tab::Tab::tl -> if trackfix then eprintf "(OMD) Tab 1\n"; loop accu (Tabs 0::tl) | Tabs n::Tab::tl -> if trackfix then eprintf "(OMD) Tab 2\n"; loop accu (Tabs(n+1)::tl) | Tab::Tabs n::tl -> if trackfix then eprintf "(OMD) Tab 3\n"; loop accu (Tabs(n+1)::tl) | Tabs a::Tabs b::tl -> if trackfix then eprintf "(OMD) Tab 4\n"; loop accu (Tabs(a+b+2)::tl) | Tilde::Tilde::tl -> if trackfix then eprintf "(OMD) Tilde 1\n"; loop accu (Tildes 0::tl) | Tildes n::Tilde::tl -> if trackfix then eprintf "(OMD) Tilde 2\n"; loop accu (Tildes(n+1)::tl) | Tilde::Tildes n::tl -> if trackfix then eprintf "(OMD) Tilde 3\n"; loop accu (Tildes(n+1)::tl) | Tildes a::Tildes b::tl -> if trackfix then eprintf "(OMD) Tilde 4\n"; loop accu (Tildes(a+b+2)::tl) | Underscore::Underscore::tl -> if trackfix then eprintf "(OMD) Underscore 1\n"; loop accu (Underscores 0::tl) | Underscores n::Underscore::tl -> if trackfix then eprintf "(OMD) Underscore 2\n"; loop accu (Underscores(n+1)::tl) | Underscore::Underscores n::tl -> if trackfix then eprintf "(OMD) Underscore 3\n"; loop accu (Underscores(n+1)::tl) | Underscores a::Underscores b::tl -> if trackfix then eprintf "(OMD) Underscore 4\n"; loop accu (Underscores(a+b+2)::tl)| x::tl -> loop (x::accu) tl | [] -> List.rev accu in loop [] l (* Remove all [NL] and [Br] at the beginning. *) let rec remove_initial_newlines = function | [] -> [] | (NL | Br) :: tl -> remove_initial_newlines tl | l -> l (** - recognizes paragraphs - glues following blockquotes *) let make_paragraphs md = let rec loop cp accu = function (* cp means current paragraph *) | [] -> let accu = match cp with | [] | [NL] | [Br] -> accu | (NL|Br)::cp -> Paragraph(List.rev cp)::accu | cp -> Paragraph(List.rev cp)::accu in List.rev accu | Blockquote b1 :: Blockquote b2 :: tl -> loop cp accu (Blockquote(b1@b2):: tl) | Blockquote b :: tl -> let e = Blockquote(loop [] [] b) in (match cp with | [] | [NL] | [Br] -> loop cp (e::accu) tl | _ -> loop [] (e::Paragraph(List.rev cp)::accu) tl) | (Ulp b) :: tl -> let e = Ulp(List.map (fun li -> loop [] [] li) b) in (match cp with | [] | [NL] | [Br] -> loop cp (e::accu) tl | _ -> loop [] (e::Paragraph(List.rev cp)::accu) tl) | (Olp b) :: tl -> let e = Olp(List.map (fun li -> loop [] [] li) b) in (match cp with | [] | [NL] | [Br] -> loop cp (e::accu) tl | _ -> loop [] (e::Paragraph(List.rev cp)::accu) tl) | Html_comment _ as e :: tl -> (match cp with | [] -> loop [] (e::accu) tl | [NL] | [Br] -> loop [] (e::NL::accu) tl | _ -> loop (e::cp) accu tl) | (Raw_block _ | Html_block _) as e :: tl -> (match cp with | [] | [NL] | [Br] -> loop cp (e::cp@accu) tl | _ -> loop [] (e::Paragraph(List.rev cp)::accu) tl) | (Code_block _ | H1 _ | H2 _ | H3 _ | H4 _ | H5 _ | H6 _ | Ol _ | Ul _) as e :: tl -> (match cp with | [] | [NL] | [Br] -> loop cp (e::accu) tl | _ -> loop [] (e::Paragraph(List.rev cp)::accu) tl) | Text "\n" :: _ | Paragraph _ :: _ -> invalid_arg "Omd_parser.make_paragraphs" | (NL|Br) :: (NL|Br) :: tl -> let tl = remove_initial_newlines tl in begin match cp with | [] | [NL] | [Br] -> loop [] (NL::NL::accu) tl | _ -> loop [] (Paragraph(List.rev cp)::accu) tl end | X(x) as e :: tl -> (* If the extension returns a block as first element, then consider the extension as a block. However don't take its contents as it is yet, the contents of the extension shall be considered final as late as possible. *) begin match x#to_t md with | None -> loop (e::cp) accu tl | Some(t) -> match t with | ( H1 _ | H2 _ | H3 _ | H4 _ | H5 _ | H6 _ | Paragraph _ | Ul _ | Ol _ | Ulp _ | Olp _ | Code_block _ | Hr | Html_block _ | Raw_block _ | Blockquote _ ) :: _ -> (match cp with | [] | [NL] | [Br] -> loop cp (e::accu) tl | _ -> loop [] (e::Paragraph(List.rev cp)::accu) tl) | _ -> loop (e::cp) accu tl end | e::tl -> loop (e::cp) accu tl in let remove_white_crumbs l = let rec loop = function | [] -> [] | Text " " :: tl | NL::tl | Br::tl -> loop tl | l -> l in List.rev (loop (List.rev l)) in let rec clean_paragraphs = if debug then eprintf "(OMD) clean_paragraphs\n"; function | [] -> [] | Paragraph[]::tl -> tl | Paragraph(p) :: tl -> Paragraph(clean_paragraphs (remove_initial_newlines (remove_white_crumbs(normalise_md p)))) :: clean_paragraphs tl | H1 v :: tl -> H1(clean_paragraphs v) :: clean_paragraphs tl | H2 v :: tl -> H2(clean_paragraphs v) :: clean_paragraphs tl | H3 v :: tl -> H3(clean_paragraphs v) :: clean_paragraphs tl | H4 v :: tl -> H4(clean_paragraphs v) :: clean_paragraphs tl | H5 v :: tl -> H5(clean_paragraphs v) :: clean_paragraphs tl | H6 v :: tl -> H6(clean_paragraphs v) :: clean_paragraphs tl | Emph v :: tl -> Emph(clean_paragraphs v) :: clean_paragraphs tl | Bold v :: tl -> Bold(clean_paragraphs v) :: clean_paragraphs tl | Ul v :: tl -> Ul(List.map clean_paragraphs v) :: clean_paragraphs tl | Ol v :: tl -> Ol(List.map clean_paragraphs v) :: clean_paragraphs tl | Ulp v :: tl -> Ulp(List.map clean_paragraphs v) :: clean_paragraphs tl | Olp v :: tl -> Olp(List.map clean_paragraphs v) :: clean_paragraphs tl | Blockquote v :: tl -> Blockquote(clean_paragraphs v) :: clean_paragraphs tl | Url(href,v,title) :: tl -> Url(href,(clean_paragraphs v),title) :: clean_paragraphs tl | Text _ | Code _ | Code_block _ | Br | Hr | NL | Ref _ | Img_ref _ | Raw _ | Raw_block _ | Html _ | Html_block _ | Html_comment _ | Img _ | X _ as v :: tl -> v :: clean_paragraphs tl in let r = clean_paragraphs(loop [] [] md) in if debug then eprintf "(OMD) clean_paragraphs %S --> %S\n%!" (Omd_backend.sexpr_of_md md) (Omd_backend.sexpr_of_md r); r (** [assert_well_formed] is a developer's function that helps to track badly constructed token lists. This function has an effect only if [trackfix] is [true]. *) let assert_well_formed (l:tok list) : unit = if trackfix then let rec equiv l1 l2 = match l1, l2 with | [], [] -> true | Tag _::tl1, Tag _::tl2-> equiv tl1 tl2 | e1::tl1, e2::tl2 -> e1 = e2 && equiv tl1 tl2 | _ -> false in assert(equiv (fix l) l); () (** Generate fallback for references. *) let extract_fallback main_loop remains l = if debug then eprintf "(OMD) Omd_parser.extract_fallback\n%!"; let rec loop accu = function | [] -> List.rev accu | e::tl as r -> if r == remains then List.rev accu else match e, remains with | Cbrackets 0, Cbracket::r when tl = r -> let accu = Word "]" :: accu in List.rev accu | Cbrackets n, Cbrackets m::r when m + 1 = n && tl = r -> let accu = Word "]" :: accu in List.rev accu | _ -> loop (e::accu) tl in let a = loop [] l in object method to_string = L.string_of_tokens a method to_t = [Text(L.string_of_tokens a)] end let unindent_rev n lexemes = if debug then eprintf "(OMD) CALL: Omd_parser.unindent_rev\n%!"; assert_well_formed lexemes; let rec loop accu cl = function | Newlines x::(Space|Spaces _)::Newlines y::tl -> loop accu cl (Newlines(x+y+2)::tl) | Newline::(Space|Spaces _)::Newlines x::tl -> loop accu cl (Newlines(1+x)::tl) | Newlines x::(Space|Spaces _)::Newline::tl -> loop accu cl (Newlines(1+x)::tl) | Newline::(Space|Spaces _)::Newline::tl -> loop accu cl (Newlines(0)::tl) | (Newline|Newlines 0 as nl)::(Space|Spaces _ as s)::( (Number _::Dot::(Space|Spaces _)::_) | ((Star|Plus|Minus)::(Space|Spaces _)::_) as tl) as l -> if n = L.length s then loop (nl::cl@accu) [] tl else (cl@accu), l | (Newline|Newlines 0 as nl)::(Space|Spaces _ as s)::tl -> let x = L.length s - n in loop (nl::cl@accu) (if x > 0 then [L.make_space x] else []) tl | Newlines(_)::_ as l -> (cl@accu), l | Newline::_ as l -> (cl@accu), l | e::tl -> loop accu (e::cl) tl | [] as l -> (cl@accu), l in match loop [] [] lexemes with | [], right -> [], right | l, right -> assert_well_formed l; l, right let unindent n lexemes = let fst, snd = unindent_rev n lexemes in List.rev fst, snd let rec is_blank = function | (Space | Spaces _ | Newline | Newlines _) :: tl -> is_blank tl | [] -> true | _ -> false let semph_or_bold (n:int) (l:l) = (* FIXME: use rpl call/return convention *) assert_well_formed l; assert (n>0 && n<4); match fsplit ~excl:(function Newlines _ :: _ -> true | _ -> false) ~f:(function | Backslash::Star::tl -> Continue_with([Star;Backslash],tl) | Backslash::Stars 0::tl -> Continue_with([Star;Backslash],Star::tl) | Backslash::Stars n::tl -> Continue_with([Star;Backslash],Stars(n-1)::tl) | (Backslashs b as x)::Star::tl -> if b mod 2 = 0 then Continue_with([x],Star::tl) else Continue_with([Star;x],tl) | (Backslashs b as x)::(Stars 0 as s)::tl -> if b mod 2 = 0 then Continue_with([x],s::tl) else Continue_with([Star;x],Star::tl) | (Backslashs b as x)::(Stars n as s)::tl -> if b mod 2 = 0 then Continue_with([x],s::tl) else Continue_with([Star;x],Stars(n-1)::tl) | (Space|Spaces _ as x)::(Star|Stars _ as s)::tl -> Continue_with([s;x],tl) | (Star|Stars _ as s)::tl -> if L.length s = n then Split([],tl) else Continue | _ -> Continue) l with | None -> None | Some(left,right) -> if is_blank left then None else Some(left,right) let sm_uemph_or_bold (n:int) (l:l) = assert_well_formed l; (* FIXME: use rpl call/return convention *) assert (n>0 && n<4); match fsplit ~excl:(function Newlines _ :: _ -> true | _ -> false) ~f:(function | Backslash::Underscore::tl -> Continue_with([Underscore;Backslash],tl) | Backslash::Underscores 0::tl -> Continue_with([Underscore;Backslash],Underscore::tl) | Backslash::Underscores n::tl -> Continue_with([Underscore;Backslash],Underscores(n-1)::tl) | (Backslashs b as x)::Underscore::tl -> if b mod 2 = 0 then Continue_with([x],Underscore::tl) else Continue_with([Underscore;x],tl) | (Backslashs b as x)::(Underscores 0 as s)::tl -> if b mod 2 = 0 then Continue_with([x],s::tl) else Continue_with([Underscore;x],Underscore::tl) | (Backslashs b as x)::(Underscores n as s)::tl -> if b mod 2 = 0 then Continue_with([x],s::tl) else Continue_with([Underscore;x],Underscores(n-1)::tl) | (Space|Spaces _ as x)::(Underscore|Underscores _ as s)::tl -> Continue_with([s;x],tl) | (Underscore|Underscores _ as s)::tl -> if L.length s = n then Split([],tl) else Continue | _ -> Continue) l with | None -> None | Some(left,right) -> if is_blank left then None else Some(left,right) let gh_uemph_or_bold (n:int) (l:l) = assert_well_formed l; (* FIXME: use rpl call/return convention *) assert (n>0 && n<4); match fsplit ~excl:(function Newlines _ :: _ -> true | _ -> false) ~f:(function | Backslash::Underscore::tl -> Continue_with([Underscore;Backslash],tl) | Backslash::Underscores 0::tl -> Continue_with([Underscore;Backslash],Underscore::tl) | Backslash::Underscores n::tl -> Continue_with([Underscore;Backslash],Underscores(n-1)::tl) | (Backslashs b as x)::Underscore::tl -> if b mod 2 = 0 then Continue_with([x],Underscore::tl) else Continue_with([Underscore;x],tl) | (Backslashs b as x)::(Underscores 0 as s)::tl -> if b mod 2 = 0 then Continue_with([x],s::tl) else Continue_with([Underscore;x],Underscore::tl) | (Backslashs b as x)::(Underscores n as s)::tl -> if b mod 2 = 0 then Continue_with([x],s::tl) else Continue_with([Underscore;x],Underscores(n-1)::tl) | (Space|Spaces _ as x)::(Underscore|Underscores _ as s)::tl -> Continue_with([s;x],tl) | (Underscore|Underscores _ as s)::(Word _|Number _ as w):: tl -> Continue_with([w;s],tl) | (Underscore|Underscores _ as s)::tl -> if L.length s = n then Split([],tl) else Continue | _ -> Continue) l with | None -> None | Some(left,right) -> if is_blank left then None else Some(left,right) let uemph_or_bold n l = assert_well_formed l; (* FIXME: use rpl call/return convention *) if gh_uemph_or_bold_style then gh_uemph_or_bold n l else sm_uemph_or_bold n l let eat_blank = eat (function |Space|Spaces _|Newline|Newlines _ -> true| _ -> false) (* used by tag__maybe_h1 and tag__maybe_h2 *) let setext_title main_loop (l:l) : (Omd_representation.tok list * l) option = assert_well_formed l; let rec detect_balanced_bqs n r l = (* If there's a balanced (complete) backquote-started code block then it should be "ignored", else it means the line that follows is part of a code block, so it's not defining a setext-style title. *) if debug then eprintf "(OMD) detect_balanced_bqs n=%d r=%S l=%S\n%!" n (L.string_of_tokens r) (L.string_of_tokens l); match l with | [] -> None | (Newline|Newlines _)::_ -> None | Backslash::Backquote::tl -> detect_balanced_bqs n (Backquote::Backslash::r) tl | Backslash::Backquotes 0::tl -> detect_balanced_bqs n (Backquote::Backslash::r) (Backquote::tl) | Backslash::Backquotes x::tl -> detect_balanced_bqs n (Backquote::Backslash::r) (Backquotes(x-1)::tl) | Backslashs(m) as b::Backquote::tl when m mod 2 = 1 -> detect_balanced_bqs n (Backquote::b::r) tl | Backslashs(m) as b::Backquotes 0::tl when m mod 2 = 1 -> detect_balanced_bqs n (Backquote::b::r) (Backquote::tl) | Backslashs(m) as b::Backquotes x::tl when m mod 2 = 1 -> detect_balanced_bqs n (Backquote::b::r) (Backquotes(x-1)::tl) | (Backquote as b)::tl when n = 1 -> Some(List.rev (b::r), tl) | (Backquotes x as b)::tl when n = x+2 -> Some(List.rev (b::r), tl) | e::tl -> detect_balanced_bqs n (e::r) tl in let rec loop r = function | [] -> if r = [] then None else Some(List.rev r, []) | Backslash::Backquote::tl -> loop (Backquote::Backslash::r) tl | Backslashs(m) as b::Backquote::tl when m mod 2 = 1 -> loop (Backquote::b::r) tl | Backslash::Backquotes 0::tl -> loop (Backquote::Backslash::r) (Backquote::tl) | Backslash::Backquotes x::tl -> loop (Backquote::Backslash::r) (Backquotes(x-1)::tl) | Backslashs(m) as b::Backquotes 0::tl when m mod 2 = 1 -> loop (Backquote::b::r) (Backquote::tl) | Backslashs(m) as b::Backquotes x::tl when m mod 2 = 1 -> loop (Backquote::b::r) (Backquotes(x-1)::tl) | Backquote::tl -> begin match detect_balanced_bqs 1 [] tl with | Some(bl,tl) -> loop (bl@r) tl | _ -> None end | Backquotes(x)::tl -> begin match detect_balanced_bqs (x+2) [] tl with | Some(bl,tl) -> loop (bl@r) tl | _ -> None end | Newline::(Equal|Equals _|Minus|Minuss _)::tl -> if r = [] then None else Some(List.rev r, tl) | (Newline|Newlines _)::_ -> if debug then eprintf "(OMD) Omd_parser.setext_title is wrongly used!\n%!"; None | e::tl -> loop (e::r) tl in if match l with | Lessthan::Word _::_ -> begin match main_loop [] [] l with | (Html_block _ | Code_block _ | Raw_block _)::_ -> true | _ -> false end | _ -> false then None else let result = loop [] l in if debug then eprintf "(OMD) setext_title l=%S result=%S,%S\n%!" (L.string_of_tokens l) (match result with | None -> "" | Some (x,tl) -> L.string_of_tokens x) (match result with | None -> "" | Some (x,tl) -> L.string_of_tokens tl); result let tag__maybe_h1 (main_loop:main_loop) = Tag("tag__maybe_h1", object method parser_extension r p l = match p with | ([]|[Newline|Newlines _]) -> begin match setext_title main_loop l with | None -> None | Some(title, tl) -> let title = H1(main_loop [] [] title) in Some((title::r), [Newline], tl) end | _ -> if debug then eprintf "(OMD) Warning: Omd_parser.tag__maybe_h1 is wrongly \ used (p=%S)!\n" (L.string_of_tokens p); None method to_string = "" end ) let tag__maybe_h2 (main_loop:main_loop) = Tag("tag__maybe_h2", object method parser_extension r p l = match p with | ([]|[Newline|Newlines _]) -> begin match setext_title main_loop l with | None -> None | Some(title, tl) -> let title = H2(main_loop [] [] title) in Some((title::r), [Newline], tl) end | _ -> if debug then eprintf "(OMD) Warning: Omd_parser.tag__maybe_h2 is wrongly \ used (p=%S)!\n" (L.string_of_tokens p); None method to_string = "" end ) let tag__md md = (* [md] should be in reverse *) Tag("tag__md", object method parser_extension r p l = Some(md@r, [], l) method to_string = "" end ) (* Let's tag the lines that *might* be titles using setext-style. "might" because if they are, for instance, in a code section, then they are not titles at all. *) let tag_setext main_loop lexemes = assert_well_formed lexemes; let rec loop pl res = function | [] | [Newline|Newlines _] -> pl@res | (Newline as e1)::(Equal|Equals _ as e2)::tl -> (* might be a H1. *) begin match fsplit_rev ~f:(function | (Space|Spaces _|Equal|Equals _)::tl -> Continue | [] -> Split([],[]) | _::_ as l -> Split([], l)) tl with | Some(rleft, (([]|(Newline|Newlines _)::_) as right)) -> loop [] (rleft@(e2::e1::pl@tag__maybe_h1 main_loop::res)) right | Some(rleft, right) -> loop [] (rleft@(e2::e1::pl@res)) right | None -> loop [] (e2::e1::pl@res) [] end | (Newline as e1)::(Minus|Minuss _ as e2)::tl -> (* might be a H2. *) begin match fsplit_rev ~f:(function | (Space|Spaces _|Minus|Minuss _)::tl -> Continue | [] -> Split([],[]) | _::_ as l -> Split([], l)) tl with | Some(rleft, (([]|(Newline|Newlines _)::_) as right)) -> loop [] (rleft@(e2::e1::pl@tag__maybe_h2 main_loop::res)) right | Some(rleft, right) -> loop [] (rleft@(e2::e1::pl@res)) right | None -> loop [] (e2::e1::pl@res) [] end | (Newline | Newlines _ as e1)::tl -> loop [] (e1::pl@res) tl | e::tl -> loop (e::pl) res tl in List.rev (loop [] [] lexemes) let hr_m l = assert_well_formed l; let rec loop n = function | ((Newlines _|Newline)::tl) | ([] as tl) -> if n >= 3 then Some tl else None | (Space|Spaces _)::tl -> loop n tl | Minus::tl -> loop (n+1) tl | Minuss x::tl -> loop (x+2+n) tl | _::_ -> None in loop 0 l let hr_s l = assert_well_formed l; let rec loop n = function | ((Newline|Newlines _)::tl) | ([] as tl) -> if n >= 3 then Some tl else None | (Space|Spaces _)::tl -> loop n tl | Star::tl -> loop (n+1) tl | Stars x::tl -> loop (x+2+n) tl | _::_ -> None in loop 0 l let hr l = match hr_m l with | None -> hr_s l | Some _ as tl -> tl (** [bcode] parses code that's delimited by backquote(s) *) let bcode ?(default_lang=default_lang) r p l = assert_well_formed l; let e, tl = match l with | (Backquote|Backquotes _ as e)::tl -> e, tl | _ -> failwith "Omd_parser.bcode is wrongly called" in let rec code_block accu = function | [] -> None | Backquote::tl -> if e = Backquote then match accu with | Newline::accu -> Some(List.rev accu, tl) | _ -> Some(List.rev accu, tl) else code_block (Backquote::accu) tl | (Backquotes n as b)::tl -> if e = b then match accu with | Newline::accu -> Some(List.rev accu, tl) | _ -> Some(List.rev accu, tl) else code_block (b::accu) tl | Tag(_, _)::tl -> code_block accu tl | e::tl -> code_block (e::accu) tl in match code_block [] tl with | None -> None | Some(cb, l) -> if List.exists (function (Newline|Newlines _) -> true | _ -> false) cb && (match p with []|[Newline|Newlines _] -> true | _ -> false) && (match e with Backquotes n when n > 0 -> true | _ -> false) then match cb with | Word lang :: (Space|Spaces _) :: Newline :: tl | Word lang :: Newline :: tl -> let code = L.string_of_tokens tl in Some(Code_block(lang, code) :: r, [Backquote], l) | Word lang :: (Space|Spaces _) :: Newlines 0 :: tl | Word lang :: Newlines 0 :: tl -> let code = L.string_of_tokens(Newline::tl) in Some(Code_block(lang, code) :: r, [Backquote], l) | Word lang :: (Space|Spaces _) :: Newlines n :: tl | Word lang :: Newlines n :: tl -> let code = L.string_of_tokens (Newlines(n-1)::tl) in Some(Code_block(lang, code) :: r, [Backquote], l) | Newline :: tl -> let code = L.string_of_tokens tl in Some(Code_block(default_lang, code) :: r, [Backquote], l) | _ -> let code = L.string_of_tokens cb in Some(Code_block(default_lang, code) :: r, [Backquote], l) else let clean_bcode s = let rec loop1 i = if i = String.length s then 0 else match s.[i] with | ' ' -> loop1(i+1) | _ -> i in let rec loop2 i = if i = -1 then String.length s else match s.[i] with | ' ' -> loop2(i-1) | _ -> i+1 in match loop1 0, loop2 (String.length s - 1) with | 0, n when n = String.length s - 1 -> s | i, n -> String.sub s i (n-i) in let code = L.string_of_tokens cb in if debug then eprintf "(OMD) clean_bcode %S => %S\n%!" code (clean_bcode code); Some(Code(default_lang, clean_bcode code) :: r, [Backquote], l) exception NL_exception exception Premature_ending (* !!DO NOT DELETE THIS!! The program that generates the generated part that follows right after. List.iter (fun (a,b,c) -> print_endline ("let read_until_"^a^" ?(bq=false) ?(no_nl=false) l = assert_well_formed l; let rec loop accu n = function | Backslash :: ("^b^" as b) :: tl -> loop (b::accu) n tl | Backslash :: ("^b^"s 0) :: tl -> loop ("^b^"::accu) n ("^b^"::tl) | Backslashs 0 :: tl -> loop (Backslash::accu) n tl | Backslashs 1 :: tl -> loop (Backslash::accu) n (Backslash::tl) | Backslashs 2 :: tl -> loop (Backslashs 0::accu) n tl | (Backslashs x) :: tl -> if x mod 2 = 0 then loop (Backslashs(x/2-1)::accu) n tl else loop (Backslashs(x/2-1)::accu) n (Backslash::tl) | (Backquote|Backquotes _ as e)::tl as l -> if bq then match bcode [] [] l with | None -> loop (e::accu) n tl | Some (r, _, tl) -> loop (* not very pretty kind of hack *) (List.rev(L.lex(Omd_backend.markdown_of_md r))@accu) n tl else loop (e::accu) n tl" ^(if c<>"" then " | Backslash :: ("^c^" as b) :: tl -> loop (b::accu) n tl | Backslash :: ("^c^"s 0) :: tl -> loop ("^c^"::accu) n ("^c^"::tl) | "^c^" as e :: tl -> loop (e::accu) (n+1) tl | "^c^"s x as e :: tl -> loop (e::accu) (n+x+2) tl " else "")^ " | "^b^" as e :: tl -> if n = 0 then List.rev accu, tl else loop (e::accu) (n-1) tl | "^b^"s 0 :: tl -> if n = 0 then List.rev accu, "^b^"::tl else loop ("^b^"::accu) (n-1) ("^b^"::tl) | "^b^"s x :: tl -> if n = 0 then List.rev accu, "^b^"s(x-1)::tl else loop (match accu with | "^b^"::accu -> "^b^"s(0)::accu | "^b^"s x::accu -> "^b^"s(x+1)::accu | _ -> "^b^"::accu) (n-1) ("^b^"s(x-1)::tl) | (Newline|Newlines _ as e)::tl -> if no_nl then raise NL_exception else loop (e::accu) n tl | e::tl -> loop (e::accu) n tl | [] -> raise Premature_ending in if debug then eprintf \"Omd_parser.read_until_"^a^" %S bq=%b no_nl=%b\\n%!\" (L.string_of_tokens l) bq no_nl; let res = loop [] 0 l in if debug then eprintf \"Omd_parser.read_until_"^a^" %S bq=%b no_nl=%b => %S\\n%!\" (L.string_of_tokens l) bq no_nl (L.string_of_tokens (fst res)); res ")) [ "gt", "Greaterthan", "Lessthan"; "lt", "Lessthan", ""; "cparenth", "Cparenthesis", "Oparenthesis"; "oparenth", "Oparenthesis", ""; "dq", "Doublequote", ""; "q", "Quote", ""; "obracket", "Obracket", ""; "cbracket", "Cbracket", "Obracket"; "space", "Space", ""; ] *) (* begin generated part *) let read_until_gt ?(bq=false) ?(no_nl=false) l = assert_well_formed l; let rec loop accu n = function | Backslash :: (Greaterthan as b) :: tl -> loop (b::accu) n tl | Backslash :: (Greaterthans 0) :: tl -> loop (Greaterthan::accu) n (Greaterthan::tl) | Backslashs 0 :: tl -> loop (Backslash::accu) n tl | Backslashs 1 :: tl -> loop (Backslash::accu) n (Backslash::tl) | Backslashs 2 :: tl -> loop (Backslashs 0::accu) n tl | (Backslashs x) :: tl -> if x mod 2 = 0 then loop (Backslashs(x/2-1)::accu) n tl else loop (Backslashs(x/2-1)::accu) n (Backslash::tl) | (Backquote|Backquotes _ as e)::tl as l -> if bq then match bcode [] [] l with | None -> loop (e::accu) n tl | Some (r, _, tl) -> loop (* not very pretty kind of hack *) (List.rev(L.lex(Omd_backend.markdown_of_md r))@accu) n tl else loop (e::accu) n tl | Backslash :: (Lessthan as b) :: tl -> loop (b::accu) n tl | Backslash :: (Lessthans 0) :: tl -> loop (Lessthan::accu) n (Lessthan::tl) | Lessthan as e :: tl -> loop (e::accu) (n+1) tl | Lessthans x as e :: tl -> loop (e::accu) (n+x+2) tl | Greaterthan as e :: tl -> if n = 0 then List.rev accu, tl else loop (e::accu) (n-1) tl | Greaterthans 0 :: tl -> if n = 0 then List.rev accu, Greaterthan::tl else loop (Greaterthan::accu) (n-1) (Greaterthan::tl) | Greaterthans x :: tl -> if n = 0 then List.rev accu, Greaterthans(x-1)::tl else loop (match accu with | Greaterthan::accu -> Greaterthans(0)::accu | Greaterthans x::accu -> Greaterthans(x+1)::accu | _ -> Greaterthan::accu) (n-1) (Greaterthans(x-1)::tl) | (Newline|Newlines _ as e)::tl -> if no_nl then raise NL_exception else loop (e::accu) n tl | e::tl -> loop (e::accu) n tl | [] -> raise Premature_ending in if debug then eprintf "Omd_parser.read_until_gt %S bq=%b no_nl=%b\n%!" (L.string_of_tokens l) bq no_nl; let res = loop [] 0 l in if debug then eprintf "Omd_parser.read_until_gt %S bq=%b no_nl=%b => %S\n%!" (L.string_of_tokens l) bq no_nl (L.string_of_tokens (fst res)); res let read_until_lt ?(bq=false) ?(no_nl=false) l = assert_well_formed l; let rec loop accu n = function | Backslash :: (Lessthan as b) :: tl -> loop (b::accu) n tl | Backslash :: (Lessthans 0) :: tl -> loop (Lessthan::accu) n (Lessthan::tl) | Backslashs 0 :: tl -> loop (Backslash::accu) n tl | Backslashs 1 :: tl -> loop (Backslash::accu) n (Backslash::tl) | Backslashs 2 :: tl -> loop (Backslashs 0::accu) n tl | (Backslashs x) :: tl -> if x mod 2 = 0 then loop (Backslashs(x/2-1)::accu) n tl else loop (Backslashs(x/2-1)::accu) n (Backslash::tl) | (Backquote|Backquotes _ as e)::tl as l -> if bq then match bcode [] [] l with | None -> loop (e::accu) n tl | Some (r, _, tl) -> loop (* not very pretty kind of hack *) (List.rev(L.lex(Omd_backend.markdown_of_md r))@accu) n tl else loop (e::accu) n tl | Lessthan as e :: tl -> if n = 0 then List.rev accu, tl else loop (e::accu) (n-1) tl | Lessthans 0 :: tl -> if n = 0 then List.rev accu, Lessthan::tl else loop (Lessthan::accu) (n-1) (Lessthan::tl) | Lessthans x :: tl -> if n = 0 then List.rev accu, Lessthans(x-1)::tl else loop (match accu with | Lessthan::accu -> Lessthans(0)::accu | Lessthans x::accu -> Lessthans(x+1)::accu | _ -> Lessthan::accu) (n-1) (Lessthans(x-1)::tl) | (Newline|Newlines _ as e)::tl -> if no_nl then raise NL_exception else loop (e::accu) n tl | e::tl -> loop (e::accu) n tl | [] -> raise Premature_ending in if debug then eprintf "Omd_parser.read_until_lt %S bq=%b no_nl=%b\n%!" (L.string_of_tokens l) bq no_nl; let res = loop [] 0 l in if debug then eprintf "Omd_parser.read_until_lt %S bq=%b no_nl=%b => %S\n%!" (L.string_of_tokens l) bq no_nl (L.string_of_tokens (fst res)); res let read_until_cparenth ?(bq=false) ?(no_nl=false) l = assert_well_formed l; let rec loop accu n = function | Backslash :: (Cparenthesis as b) :: tl -> loop (b::accu) n tl | Backslash :: (Cparenthesiss 0) :: tl -> loop (Cparenthesis::accu) n (Cparenthesis::tl) | Backslashs 0 :: tl -> loop (Backslash::accu) n tl | Backslashs 1 :: tl -> loop (Backslash::accu) n (Backslash::tl) | Backslashs 2 :: tl -> loop (Backslashs 0::accu) n tl | (Backslashs x) :: tl -> if x mod 2 = 0 then loop (Backslashs(x/2-1)::accu) n tl else loop (Backslashs(x/2-1)::accu) n (Backslash::tl) | (Backquote|Backquotes _ as e)::tl as l -> if bq then match bcode [] [] l with | None -> loop (e::accu) n tl | Some (r, _, tl) -> loop (* not very pretty kind of hack *) (List.rev(L.lex(Omd_backend.markdown_of_md r))@accu) n tl else loop (e::accu) n tl | Backslash :: (Oparenthesis as b) :: tl -> loop (b::accu) n tl | Backslash :: (Oparenthesiss 0) :: tl -> loop (Oparenthesis::accu) n (Oparenthesis::tl) | Oparenthesis as e :: tl -> loop (e::accu) (n+1) tl | Oparenthesiss x as e :: tl -> loop (e::accu) (n+x+2) tl | Cparenthesis as e :: tl -> if n = 0 then List.rev accu, tl else loop (e::accu) (n-1) tl | Cparenthesiss 0 :: tl -> if n = 0 then List.rev accu, Cparenthesis::tl else loop (Cparenthesis::accu) (n-1) (Cparenthesis::tl) | Cparenthesiss x :: tl -> if n = 0 then List.rev accu, Cparenthesiss(x-1)::tl else loop (match accu with | Cparenthesis::accu -> Cparenthesiss(0)::accu | Cparenthesiss x::accu -> Cparenthesiss(x+1)::accu | _ -> Cparenthesis::accu) (n-1) (Cparenthesiss(x-1)::tl) | (Newline|Newlines _ as e)::tl -> if no_nl then raise NL_exception else loop (e::accu) n tl | e::tl -> loop (e::accu) n tl | [] -> raise Premature_ending in if debug then eprintf "Omd_parser.read_until_cparenth %S bq=%b no_nl=%b\n%!" (L.string_of_tokens l) bq no_nl; let res = loop [] 0 l in if debug then eprintf "Omd_parser.read_until_cparenth %S bq=%b no_nl=%b => %S\n%!" (L.string_of_tokens l) bq no_nl (L.string_of_tokens (fst res)); res let read_until_oparenth ?(bq=false) ?(no_nl=false) l = assert_well_formed l; let rec loop accu n = function | Backslash :: (Oparenthesis as b) :: tl -> loop (b::accu) n tl | Backslash :: (Oparenthesiss 0) :: tl -> loop (Oparenthesis::accu) n (Oparenthesis::tl) | Backslashs 0 :: tl -> loop (Backslash::accu) n tl | Backslashs 1 :: tl -> loop (Backslash::accu) n (Backslash::tl) | Backslashs 2 :: tl -> loop (Backslashs 0::accu) n tl | (Backslashs x) :: tl -> if x mod 2 = 0 then loop (Backslashs(x/2-1)::accu) n tl else loop (Backslashs(x/2-1)::accu) n (Backslash::tl) | (Backquote|Backquotes _ as e)::tl as l -> if bq then match bcode [] [] l with | None -> loop (e::accu) n tl | Some (r, _, tl) -> loop (* not very pretty kind of hack *) (List.rev(L.lex(Omd_backend.markdown_of_md r))@accu) n tl else loop (e::accu) n tl | Oparenthesis as e :: tl -> if n = 0 then List.rev accu, tl else loop (e::accu) (n-1) tl | Oparenthesiss 0 :: tl -> if n = 0 then List.rev accu, Oparenthesis::tl else loop (Oparenthesis::accu) (n-1) (Oparenthesis::tl) | Oparenthesiss x :: tl -> if n = 0 then List.rev accu, Oparenthesiss(x-1)::tl else loop (match accu with | Oparenthesis::accu -> Oparenthesiss(0)::accu | Oparenthesiss x::accu -> Oparenthesiss(x+1)::accu | _ -> Oparenthesis::accu) (n-1) (Oparenthesiss(x-1)::tl) | (Newline|Newlines _ as e)::tl -> if no_nl then raise NL_exception else loop (e::accu) n tl | e::tl -> loop (e::accu) n tl | [] -> raise Premature_ending in if debug then eprintf "Omd_parser.read_until_oparenth %S bq=%b no_nl=%b\n%!" (L.string_of_tokens l) bq no_nl; let res = loop [] 0 l in if debug then eprintf "Omd_parser.read_until_oparenth %S bq=%b no_nl=%b => %S\n%!" (L.string_of_tokens l) bq no_nl (L.string_of_tokens (fst res)); res let read_until_dq ?(bq=false) ?(no_nl=false) l = assert_well_formed l; let rec loop accu n = function | Backslash :: (Doublequote as b) :: tl -> loop (b::accu) n tl | Backslash :: (Doublequotes 0) :: tl -> loop (Doublequote::accu) n (Doublequote::tl) | Backslashs 0 :: tl -> loop (Backslash::accu) n tl | Backslashs 1 :: tl -> loop (Backslash::accu) n (Backslash::tl) | Backslashs 2 :: tl -> loop (Backslashs 0::accu) n tl | (Backslashs x) :: tl -> if x mod 2 = 0 then loop (Backslashs(x/2-1)::accu) n tl else loop (Backslashs(x/2-1)::accu) n (Backslash::tl) | (Backquote|Backquotes _ as e)::tl as l -> if bq then match bcode [] [] l with | None -> loop (e::accu) n tl | Some (r, _, tl) -> loop (* not very pretty kind of hack *) (List.rev(L.lex(Omd_backend.markdown_of_md r))@accu) n tl else loop (e::accu) n tl | Doublequote as e :: tl -> if n = 0 then List.rev accu, tl else loop (e::accu) (n-1) tl | Doublequotes 0 :: tl -> if n = 0 then List.rev accu, Doublequote::tl else loop (Doublequote::accu) (n-1) (Doublequote::tl) | Doublequotes x :: tl -> if n = 0 then List.rev accu, Doublequotes(x-1)::tl else loop (match accu with | Doublequote::accu -> Doublequotes(0)::accu | Doublequotes x::accu -> Doublequotes(x+1)::accu | _ -> Doublequote::accu) (n-1) (Doublequotes(x-1)::tl) | (Newline|Newlines _ as e)::tl -> if no_nl then raise NL_exception else loop (e::accu) n tl | e::tl -> loop (e::accu) n tl | [] -> raise Premature_ending in if debug then eprintf "Omd_parser.read_until_dq %S bq=%b no_nl=%b\n%!" (L.string_of_tokens l) bq no_nl; let res = loop [] 0 l in if debug then eprintf "Omd_parser.read_until_dq %S bq=%b no_nl=%b => %S\n%!" (L.string_of_tokens l) bq no_nl (L.string_of_tokens (fst res)); res let read_until_q ?(bq=false) ?(no_nl=false) l = assert_well_formed l; let rec loop accu n = function | Backslash :: (Quote as b) :: tl -> loop (b::accu) n tl | Backslash :: (Quotes 0) :: tl -> loop (Quote::accu) n (Quote::tl) | Backslashs 0 :: tl -> loop (Backslash::accu) n tl | Backslashs 1 :: tl -> loop (Backslash::accu) n (Backslash::tl) | Backslashs 2 :: tl -> loop (Backslashs 0::accu) n tl | (Backslashs x) :: tl -> if x mod 2 = 0 then loop (Backslashs(x/2-1)::accu) n tl else loop (Backslashs(x/2-1)::accu) n (Backslash::tl) | (Backquote|Backquotes _ as e)::tl as l -> if bq then match bcode [] [] l with | None -> loop (e::accu) n tl | Some (r, _, tl) -> loop (* not very pretty kind of hack *) (List.rev(L.lex(Omd_backend.markdown_of_md r))@accu) n tl else loop (e::accu) n tl | Quote as e :: tl -> if n = 0 then List.rev accu, tl else loop (e::accu) (n-1) tl | Quotes 0 :: tl -> if n = 0 then List.rev accu, Quote::tl else loop (Quote::accu) (n-1) (Quote::tl) | Quotes x :: tl -> if n = 0 then List.rev accu, Quotes(x-1)::tl else loop (match accu with | Quote::accu -> Quotes(0)::accu | Quotes x::accu -> Quotes(x+1)::accu | _ -> Quote::accu) (n-1) (Quotes(x-1)::tl) | (Newline|Newlines _ as e)::tl -> if no_nl then raise NL_exception else loop (e::accu) n tl | e::tl -> loop (e::accu) n tl | [] -> raise Premature_ending in if debug then eprintf "Omd_parser.read_until_q %S bq=%b no_nl=%b\n%!" (L.string_of_tokens l) bq no_nl; let res = loop [] 0 l in if debug then eprintf "Omd_parser.read_until_q %S bq=%b no_nl=%b => %S\n%!" (L.string_of_tokens l) bq no_nl (L.string_of_tokens (fst res)); res let read_until_obracket ?(bq=false) ?(no_nl=false) l = assert_well_formed l; let rec loop accu n = function | Backslash :: (Obracket as b) :: tl -> loop (b::accu) n tl | Backslash :: (Obrackets 0) :: tl -> loop (Obracket::accu) n (Obracket::tl) | Backslashs 0 :: tl -> loop (Backslash::accu) n tl | Backslashs 1 :: tl -> loop (Backslash::accu) n (Backslash::tl) | Backslashs 2 :: tl -> loop (Backslashs 0::accu) n tl | (Backslashs x) :: tl -> if x mod 2 = 0 then loop (Backslashs(x/2-1)::accu) n tl else loop (Backslashs(x/2-1)::accu) n (Backslash::tl) | (Backquote|Backquotes _ as e)::tl as l -> if bq then match bcode [] [] l with | None -> loop (e::accu) n tl | Some (r, _, tl) -> loop (* not very pretty kind of hack *) (List.rev(L.lex(Omd_backend.markdown_of_md r))@accu) n tl else loop (e::accu) n tl | Obracket as e :: tl -> if n = 0 then List.rev accu, tl else loop (e::accu) (n-1) tl | Obrackets 0 :: tl -> if n = 0 then List.rev accu, Obracket::tl else loop (Obracket::accu) (n-1) (Obracket::tl) | Obrackets x :: tl -> if n = 0 then List.rev accu, Obrackets(x-1)::tl else loop (match accu with | Obracket::accu -> Obrackets(0)::accu | Obrackets x::accu -> Obrackets(x+1)::accu | _ -> Obracket::accu) (n-1) (Obrackets(x-1)::tl) | (Newline|Newlines _ as e)::tl -> if no_nl then raise NL_exception else loop (e::accu) n tl | e::tl -> loop (e::accu) n tl | [] -> raise Premature_ending in if debug then eprintf "Omd_parser.read_until_obracket %S bq=%b no_nl=%b\n%!" (L.string_of_tokens l) bq no_nl; let res = loop [] 0 l in if debug then eprintf "Omd_parser.read_until_obracket %S bq=%b no_nl=%b => %S\n%!" (L.string_of_tokens l) bq no_nl (L.string_of_tokens (fst res)); res let read_until_cbracket ?(bq=false) ?(no_nl=false) l = assert_well_formed l; let rec loop accu n = function | Backslash :: (Cbracket as b) :: tl -> loop (b::accu) n tl | Backslash :: (Cbrackets 0) :: tl -> loop (Cbracket::accu) n (Cbracket::tl) | Backslashs 0 :: tl -> loop (Backslash::accu) n tl | Backslashs 1 :: tl -> loop (Backslash::accu) n (Backslash::tl) | Backslashs 2 :: tl -> loop (Backslashs 0::accu) n tl | (Backslashs x) :: tl -> if x mod 2 = 0 then loop (Backslashs(x/2-1)::accu) n tl else loop (Backslashs(x/2-1)::accu) n (Backslash::tl) | (Backquote|Backquotes _ as e)::tl as l -> if bq then match bcode [] [] l with | None -> loop (e::accu) n tl | Some (r, _, tl) -> loop (* not very pretty kind of hack *) (List.rev(L.lex(Omd_backend.markdown_of_md r))@accu) n tl else loop (e::accu) n tl | Backslash :: (Obracket as b) :: tl -> loop (b::accu) n tl | Backslash :: (Obrackets 0) :: tl -> loop (Obracket::accu) n (Obracket::tl) | Obracket as e :: tl -> loop (e::accu) (n+1) tl | Obrackets x as e :: tl -> loop (e::accu) (n+x+2) tl | Cbracket as e :: tl -> if n = 0 then List.rev accu, tl else loop (e::accu) (n-1) tl | Cbrackets 0 :: tl -> if n = 0 then List.rev accu, Cbracket::tl else loop (Cbracket::accu) (n-1) (Cbracket::tl) | Cbrackets x :: tl -> if n = 0 then List.rev accu, Cbrackets(x-1)::tl else loop (match accu with | Cbracket::accu -> Cbrackets(0)::accu | Cbrackets x::accu -> Cbrackets(x+1)::accu | _ -> Cbracket::accu) (n-1) (Cbrackets(x-1)::tl) | (Newline|Newlines _ as e)::tl -> if no_nl then raise NL_exception else loop (e::accu) n tl | e::tl -> loop (e::accu) n tl | [] -> raise Premature_ending in if debug then eprintf "Omd_parser.read_until_cbracket %S bq=%b no_nl=%b\n%!" (L.string_of_tokens l) bq no_nl; let res = loop [] 0 l in if debug then eprintf "Omd_parser.read_until_cbracket %S bq=%b no_nl=%b => %S\n%!" (L.string_of_tokens l) bq no_nl (L.string_of_tokens (fst res)); res let read_until_space ?(bq=false) ?(no_nl=false) l = assert_well_formed l; let rec loop accu n = function | Backslash :: (Space as b) :: tl -> loop (b::accu) n tl | Backslash :: (Spaces 0) :: tl -> loop (Space::accu) n (Space::tl) | Backslashs 0 :: tl -> loop (Backslash::accu) n tl | Backslashs 1 :: tl -> loop (Backslash::accu) n (Backslash::tl) | Backslashs 2 :: tl -> loop (Backslashs 0::accu) n tl | (Backslashs x) :: tl -> if x mod 2 = 0 then loop (Backslashs(x/2-1)::accu) n tl else loop (Backslashs(x/2-1)::accu) n (Backslash::tl) | (Backquote|Backquotes _ as e)::tl as l -> if bq then match bcode [] [] l with | None -> loop (e::accu) n tl | Some (r, _, tl) -> loop (* not very pretty kind of hack *) (List.rev(L.lex(Omd_backend.markdown_of_md r))@accu) n tl else loop (e::accu) n tl | Space as e :: tl -> if n = 0 then List.rev accu, tl else loop (e::accu) (n-1) tl | Spaces 0 :: tl -> if n = 0 then List.rev accu, Space::tl else loop (Space::accu) (n-1) (Space::tl) | Spaces x :: tl -> if n = 0 then List.rev accu, Spaces(x-1)::tl else loop (match accu with | Space::accu -> Spaces(0)::accu | Spaces x::accu -> Spaces(x+1)::accu | _ -> Space::accu) (n-1) (Spaces(x-1)::tl) | (Newline|Newlines _ as e)::tl -> if no_nl then raise NL_exception else loop (e::accu) n tl | e::tl -> loop (e::accu) n tl | [] -> raise Premature_ending in if debug then eprintf "Omd_parser.read_until_space %S bq=%b no_nl=%b\n%!" (L.string_of_tokens l) bq no_nl; let res = loop [] 0 l in if debug then eprintf "Omd_parser.read_until_space %S bq=%b no_nl=%b => %S\n%!" (L.string_of_tokens l) bq no_nl (L.string_of_tokens (fst res)); res (* /end generated part *) let read_until_newline l = assert_well_formed l; let rec loop accu n = function | ((Backslash as a)) :: ((Newline as b)) :: tl -> loop (b :: a :: accu) n tl | Backslash :: Newlines 0 :: tl -> loop (Newline :: Backslash :: accu) n (Newline :: tl) | ((Backslashs 0 as e)) :: tl -> loop (e :: accu) n tl | ((Backslashs x as e)) :: tl -> if (x mod 2) = 0 then loop (e :: accu) n tl else loop ((Backslashs (x - 1)) :: accu) n (Backslash :: tl) | ((Newline as e)) :: tl -> if n = 0 then ((List.rev accu), tl) else loop (e :: accu) (n - 1) tl | Newlines 0 :: tl -> if n = 0 then ((List.rev accu), (Newline :: tl)) else loop (Newline :: accu) (n - 1) (Newline :: tl) | Newlines n :: tl -> ((List.rev accu), ((Newlines (n - 1)) :: tl)) | e :: tl -> loop (e :: accu) n tl | [] -> raise Premature_ending in loop [] 0 l (* H1, H2, H3, ... *) let read_title (main_loop:main_loop) n r _previous lexemes = let title, rest = let rec loop accu = function | Backslash::Hash::tl -> loop (Hash::Backslash::accu) tl | Backslashs(n)::Hash::tl when n mod 2 = 1 -> loop (Hash::Backslashs(n-1)::accu) tl | Backslash::Hashs(h)::tl -> begin match tl with | [] | (Space|Spaces _)::(Newline|Newlines _)::_ | (Newline|Newlines _)::_ -> loop (Hash::Backslash::accu) ((if h = 0 then Hash else Hashs(h-1))::tl) | _ -> loop (Hashs(h)::Backslash::accu) tl end | Backslashs(n)::Hashs(h)::tl when n mod 2 = 1 -> begin match tl with | [] | (Space|Spaces _)::(Newline|Newlines _)::_ | (Newline|Newlines _)::_ -> loop (Hash::Backslashs(n)::accu) ((if h = 0 then Hash else Hashs(h-1))::tl) | _ -> loop (Hashs(h)::Backslashs(n)::accu) tl end | (Hash|Hashs _) :: ((Newline|Newlines _) :: _ as l) | (Hash|Hashs _) :: (Space|Spaces _) :: ((Newline|Newlines _)::_ as l) | ((Newline|Newlines _) :: _ as l) | ([] as l) | (Space|Spaces _) :: (Hash|Hashs _) :: ((Newline|Newlines _) :: _ as l) | (Space|Spaces _) :: (Hash|Hashs _) :: (Space|Spaces _) :: ((Newline|Newlines _)::_ as l) | (Space|Spaces _) :: ((Newline|Newlines _) :: _ as l) | (Space|Spaces _) :: ([] as l) -> main_loop [] [] (List.rev accu), l | [Hash|Hashs _] | [(Space|Spaces _); Hash|Hashs _] | [(Space|Spaces _); (Hash|Hashs _); (Space|Spaces _)] -> main_loop [] [] (List.rev accu), [] | x::tl -> loop (x::accu) tl in loop [] lexemes in match n with | 1 -> Some(H1 title :: r, [Newline], rest) | 2 -> Some(H2 title :: r, [Newline], rest) | 3 -> Some(H3 title :: r, [Newline], rest) | 4 -> Some(H4 title :: r, [Newline], rest) | 5 -> Some(H5 title :: r, [Newline], rest) | 6 -> Some(H6 title :: r, [Newline], rest) | _ -> None let maybe_extension extensions r p l = match extensions with | [] -> None | _ -> List.fold_left (function | None -> (fun f -> f#parser_extension r p l) | Some(nr, np, nl) as e -> (fun f -> match f#parser_extension nr np nl with | None -> e | Some _ as k -> k) ) None extensions (* blockquotes *) let emailstyle_quoting (main_loop:main_loop) r _p lexemes = assert_well_formed lexemes; let rec loop block cl = function | Newline::Greaterthan::(Newline::_ as tl) -> loop (Newline::cl@block) [] tl | Newline::Greaterthan::Space::tl -> loop (Newline::cl@block) [] tl | Newline::Greaterthan::Spaces 0::tl -> loop (Newline::cl@block) [Space] tl | Newline::Greaterthan::Spaces n::tl -> assert(n>0); loop (Newline::cl@block) [Spaces(n-1)] tl (* multi paragraph blockquotes with empty lines *) | Newlines 0::Greaterthan::Space::tl -> loop (Newlines 0::cl@block) [] tl | Newlines 0::Greaterthan::Spaces 0::tl -> loop (Newlines 0::cl@block) [Space] tl | Newlines 0::Greaterthan::Spaces n::tl -> assert(n>0); loop (Newlines 0::cl@block) [Spaces(n-1)] tl | (Newlines _::_ as l) | ([] as l) -> fix(List.rev(cl@block)), l | e::tl -> loop block (e::cl) tl in match loop [] [] lexemes with | (Newline|Newlines _)::block, tl -> if debug then eprintf "(OMD) Omd_parser.emailstyle_quoting %S\n%!" (L.string_of_tokens block); Some((Blockquote(main_loop [] [] block)::r), [Newline], tl) | _ -> None (* maybe a reference *) let maybe_reference (main_loop:main_loop) rc r _p l = assert_well_formed l; (* this function is called when we know it's not a link although it started with a '[' *) (* So it could be a reference or a link definition. *) let rec maybe_ref l = let text, remains = read_until_cbracket ~bq:true l in (* check that there is no ill-placed open bracket *) if (try ignore(read_until_obracket ~bq:true text); true with Premature_ending -> false) then raise Premature_ending; (* <-- ill-placed open bracket *) let blank, remains = read_until_obracket ~bq:true remains in (* check that there are no unwanted characters between CB and OB. *) if eat (let flag = ref true in function (* allow only a space, multiple spaces, or a newline *) | Newline -> !flag && (flag := false; true) | (Space|Spaces _) -> !flag && (flag := false; true) | _ -> false) blank <> [] then raise Premature_ending (* <-- not a regular reference *) else match read_until_cbracket ~bq:true remains with | [], remains -> let fallback = extract_fallback main_loop remains (Obracket::l) in let id = L.string_of_tokens text in (* implicit anchor *) Some(((Ref(rc, id, id, fallback))::r), [Cbracket], remains) | id, remains -> let fallback = extract_fallback main_loop remains (Obracket::l) in Some(((Ref(rc, L.string_of_tokens id, L.string_of_tokens text, fallback))::r), [Cbracket], remains) in let rec maybe_nonregular_ref l = let text, remains = read_until_cbracket ~bq:true l in (* check that there is no ill-placed open bracket *) if (try ignore(read_until_obracket ~bq:true text); true with Premature_ending -> false) then raise Premature_ending; (* <-- ill-placed open bracket *) let fallback = extract_fallback main_loop remains (Obracket::l) in let id = L.string_of_tokens text in (* implicit anchor *) Some(((Ref(rc, id, id, fallback))::r), [Cbracket], remains) in let rec maybe_def l = match read_until_cbracket ~bq:true l with | _, [] -> raise Premature_ending | id, (Colon::(Space|Spaces _)::remains) | id, (Colon::remains) -> begin match fsplit ~f:(function | (Space|Spaces _|Newline|Newlines _):: _ as l -> Split([], l) | e::tl -> Continue | [] -> Split([],[])) remains with | None | Some([], _) -> raise Premature_ending | Some(url, remains) -> let title, remains = match eat (function | (Space|Spaces _|Newline|Newlines _) -> true | _ -> false) remains with | Doublequotes(0)::tl -> [], tl | Doublequote::tl -> read_until_dq ~bq:true tl | Quotes(0)::tl -> [], tl | Quote::tl -> read_until_q ~bq:true tl | Oparenthesis::tl-> read_until_cparenth ~bq:true tl | l -> [], l in let url = let url = L.string_of_tokens url in if String.length url > 2 && url.[0] = '<' && url.[String.length url - 1] = '>' then String.sub url 1 (String.length url - 2) else url in rc#add_ref (L.string_of_tokens id) (L.string_of_tokens title) url; Some(r, [Newline], remains) end | _ -> raise Premature_ending in try maybe_ref l with | Premature_ending | NL_exception -> try maybe_def l with | Premature_ending | NL_exception -> try maybe_nonregular_ref l with | Premature_ending | NL_exception -> None (** maybe a link *) let maybe_link (main_loop:main_loop) r _p l = if debug then eprintf "(OMD) # maybe_link\n"; assert_well_formed l; let read_url name l = if debug then eprintf "(OMD) # maybe_link>read_url %S\n" (L.string_of_tokens l); try let l_cp, r_cp = read_until_cparenth ~no_nl:true ~bq:false l in if debug then eprintf "(OMD) maybe_link >> l_cp=%S r_cp=%S\n%!" (L.string_of_tokens l_cp) (L.string_of_tokens r_cp); try let l_dq, r_dq = read_until_dq ~no_nl:true ~bq:false l in if debug then eprintf "(OMD) maybe_link >> l_dq=%S r_dq=%S\n%!" (L.string_of_tokens l_dq) (L.string_of_tokens r_dq); (* maybe title *) if List.length l_cp > List.length l_dq then (* title *) begin if debug then eprintf "(OMD) maybe_link >> title\n%!"; let url = match List.rev l_dq with | (Newline|Space|Spaces _)::(Newline|Space|Spaces _)::tl | (Newline|Space|Spaces _)::tl -> L.string_of_tokens (List.rev tl) | _ -> L.string_of_tokens l_dq in let title, rest = read_until_dq ~no_nl:false ~bq:false r_dq in let rest = snd(read_until_cparenth rest) in let title = L.string_of_tokens title in Some(Url(url, name, title) :: r, [Cparenthesis], rest) end else (* no title *) raise Premature_ending with NL_exception | Premature_ending -> (* no title *) begin if debug then eprintf "(OMD) maybe_link >> no title\n%!"; let url = match List.rev l_cp with | (Newline|Space|Spaces _)::(Newline|Space|Spaces _)::tl | (Newline|Space|Spaces _)::tl -> List.rev tl | _ -> l_cp in let title, rest = [], r_cp in let url = L.string_of_tokens url in let title = L.string_of_tokens title in Some(Url(url, name, title) :: r, [Cparenthesis], rest) end with NL_exception | Premature_ending -> None in let read_name l = (* it's not really the "name" of a URL but what corresponds to the inner HTML of an HTML 'A' tag *) if debug then eprintf "(OMD) # maybe_link> read_name\n"; try match read_until_cbracket ~bq:true l with | name, (Oparenthesis::tl) -> read_url (main_loop [] [Obracket] name) (eat_blank tl) | name, (Oparenthesiss 0::tl) -> read_url (main_loop [] [Obracket] name) (Oparenthesis::tl) | name, (Oparenthesiss n::tl) -> read_url (main_loop [] [Obracket] name) (Oparenthesiss(n-1)::tl) | _ -> None with Premature_ending | NL_exception -> None in read_name l let has_paragraphs l = (* Has at least 2 consecutive newlines. *) List.exists (function Newlines _ -> true | _ -> false) l let parse_list (main_loop:main_loop) r _p l = assert_well_formed l; if debug then begin eprintf "(OMD) parse_list r=(%s) p=(%s) l=(%s)\n%!" "" (* (Omd_backend.sexpr_of_md (List.rev r)) *) "" (* (destring_of_tl p) *) (L.destring_of_tokens ~limit:40 l); end; let module UO = struct type ordered = O | U end in let open UO in if debug then eprintf "(OMD) parse_list: l=(%s)\n%!" (L.destring_of_tokens l); let end_of_item (indent:int) l : tok split_action = match l with | [] -> Split([],[]) | Newlines 0 :: ((Spaces n) :: Greaterthan :: (Space | Spaces _) :: tl as s) -> assert(n>=0); if n+2 = indent+4 then (* blockquote *) match unindent (n+2) (Newline::s) with | Newline::block, rest -> Continue_with(List.rev(Newlines(1)::block), rest) | Newlines n::block, rest -> Continue_with(List.rev(Newlines(n+2)::block), rest) | block, rest -> Continue_with(Newlines 0::block, rest) else if n+2 >= indent+8 then (* code inside item *) match unindent (indent+4) (Newline::s) with | Newline::block, rest -> Continue_with(List.rev(Newlines(1)::block), rest) | Newlines n::block, rest -> Continue_with(List.rev(Newlines(n+2)::block), rest) | block, rest -> Continue_with(Newlines 0::block, rest) else Split([], l) | Newlines 0 :: (Spaces n :: tl as s) -> assert(n>=0); if n+2 >= indent+8 then (* code inside item *) match unindent (indent+4) (Newline::s) with | Newline::block, rest -> Continue_with(List.rev(Newlines(0)::block), rest) | Newlines n::block, rest -> Continue_with(List.rev(Newlines(n+1)::block), rest) | block, rest -> Continue_with(Newline::block, rest) else if n+2 >= indent+4 then (* new paragraph inside item *) match unindent (indent+4) (Newline::s) with | Newline::block, rest -> Continue_with(List.rev(Newlines(1)::block), rest) | Newlines n::block, rest -> Continue_with(List.rev(Newlines(n+2)::block), rest) | block, rest -> Continue_with(Newlines 0::block, rest) else Split([], l) | (Newlines _) :: _ -> (* n > 0 *) (* End of item, stop *) Split([], l) | Newline :: ( ((Space|Spaces _) :: (Star|Minus|Plus) :: (Space|Spaces _):: _) | ((Space|Spaces _) :: Number _ :: Dot :: (Space|Spaces _) :: _) | ((Star|Minus|Plus) :: (Space|Spaces _):: _) | (Number _ :: Dot :: (Space|Spaces _) :: _) as tl) -> Split([Newline], tl) | Newline :: (Space | Spaces _) :: Newline :: tl -> (* A line with spaces shouldn't interfere here, which is about exactly 2 consecutive newlines, so we rewrite the head of the lexing stream. *) Continue_with([], Newlines 0 :: tl) | Newline :: (Space | Spaces _) :: (Newlines _) :: _ -> (* A line with spaces shouldn't interfere here, which is about at least 3 consecutive newlines, so we stop. *) Split([], l) | Newline :: (Spaces _ as s) :: tl -> Continue_with ([s; Tag("parse_list/remember spaces", object method parser_extension r p = function Spaces _::tl -> Some(r,p,Space::tl) | _ -> None method to_string = "" end); Newline], tl) | Newline :: (Space as s) :: tl -> Continue_with ([s; Tag("parse_list/remember space", object method parser_extension r p = function (Space|Spaces _)::tl -> Some(r,p,Space::tl) | _ -> None method to_string = "" end); Newline], tl) | _::_ -> Continue in let rev_to_t l = assert_well_formed l; (* Newlines at the end of items have no meaning (except to end the item which is expressed by the constructor already). *) let l = match l with (Newline | Newlines _) :: tl -> tl | _ -> l in main_loop [] [Newline] (List.rev l) in let add (sublist:element) items = if debug then eprintf "(OMD) add\n%!"; match items with | [] -> assert false | (O,indents,item)::tl -> (O,indents,(item@[sublist]))::tl | (U,indents,item)::tl -> (U,indents,(item@[sublist]))::tl in let make_up ~p items : Omd_representation.element = if debug then eprintf "(OMD) make_up p=%b\n%!" p; let items = List.rev items in match items with | (U,_,item)::_ -> if p then Ulp(List.map (fun (_,_,i) -> i) items) else Ul(List.map (fun (_,_,i) -> i) items) | (O,_,item)::_ -> if p then Olp(List.map (fun (_,_,i) -> i) items) else Ol(List.map (fun (_,_,i) -> i) items) | [] -> failwith "make_up called with []" (* assert false *) in let rec list_items ~p indents items l = if debug then eprintf "(OMD) list_items: p=%b l=(%s)\n%!" p (L.destring_of_tokens l); match l with (* no more list items *) | [] -> make_up p items, l (* more list items *) (* new unordered items *) | (Star|Minus|Plus)::(Space|Spaces _)::tl -> begin match fsplit_rev ~f:(end_of_item 0) tl with | None -> make_up p items, l | Some(new_item, rest) -> let p = p || has_paragraphs new_item in if debug then eprintf "(OMD) (2346) new_item=%S\n%!" (L.destring_of_tokens new_item); match indents with | [] -> assert(items = []); list_items ~p [0] ((U,[0], rev_to_t new_item)::items) rest | 0::_ -> list_items ~p indents ((U,indents,rev_to_t new_item)::items) rest | _::_ -> make_up p items, l end | Space::(Star|Minus|Plus)::(Space|Spaces _)::tl -> begin match fsplit_rev ~f:(end_of_item 1) tl with | None -> make_up p items, l | Some(new_item, rest) -> let p = p || has_paragraphs new_item in match indents with | [] -> assert(items = []); list_items ~p [1] ((U,[1],rev_to_t new_item)::items) rest | 1::_ -> list_items ~p indents ((U,indents,rev_to_t new_item)::items) rest | i::_ -> if i > 1 then make_up p items, l else (* i < 1 : new sub list*) let sublist, remains = list_items ~p (1::indents) [(U,1::indents,rev_to_t new_item)] rest in list_items ~p indents (add sublist items) remains end | Spaces n::(Star|Minus|Plus)::(Space|Spaces _)::tl -> begin match fsplit_rev ~f:(end_of_item (n+2)) tl with | None -> make_up p items, l | Some(new_item, rest) -> let p = p || has_paragraphs new_item in match indents with | [] -> if debug then eprintf "(OMD) spaces[] l=(%S)\n%!" (L.string_of_tokens l); assert(items = []); (* aïe... listes mal formées ?! *) list_items ~p [n+2] ((U,[n+2],rev_to_t new_item)::items) rest | i::_ -> if debug then eprintf "(OMD) spaces(%d::_) n=%d l=(%S)\n%!" i n (L.string_of_tokens l); if i = n + 2 then let items = (U,indents,rev_to_t new_item) :: items in list_items ~p indents items rest else if i < n + 2 then let sublist, remains = list_items ~p ((n+2)::indents) [(U,(n+2)::indents,rev_to_t new_item)] rest in list_items ~p indents (add sublist items) remains else (* i > n + 2 *) make_up p items, l end (* new ordered items *) | Number _::Dot::(Space|Spaces _)::tl -> begin match fsplit_rev ~f:(end_of_item 0) tl with | None -> make_up p items, l | Some(new_item, rest) -> let p = p || has_paragraphs new_item in assert_well_formed new_item; match indents with | [] -> assert(items = []); list_items ~p [0] ((O,[0],rev_to_t new_item)::items) rest | 0::_ -> list_items ~p indents ((O,indents,rev_to_t new_item)::items) rest | _::_ -> make_up p items, l end | Space::Number _::Dot::(Space|Spaces _)::tl -> begin match fsplit_rev ~f:(end_of_item 1) tl with | None -> make_up p items, l | Some(new_item, rest) -> let p = p || has_paragraphs new_item in match indents with | [] -> assert(items = []); list_items ~p [1] ((O,[1],rev_to_t new_item)::items) rest | 1::_ -> list_items ~p indents ((O,indents,rev_to_t new_item)::items) rest | i::_ -> if i > 1 then make_up p items, l else (* i < 1 : new sub list*) let sublist, remains = list_items ~p (1::indents) [(O,1::indents,rev_to_t new_item)] rest in list_items ~p:p indents (add sublist items) remains end | Spaces n::Number _::Dot::(Space|Spaces _)::tl -> begin match fsplit_rev ~f:(end_of_item (n+2)) tl with | None -> make_up p items, l | Some(new_item, rest) -> let p = p || has_paragraphs new_item in match indents with | [] -> if debug then eprintf "(OMD) spaces[] l=(%S)\n%!" (L.string_of_tokens l); assert(items = []); (* aïe... listes mal formées ?! *) list_items ~p [n+2] ((O,[n+2],rev_to_t new_item)::items) rest | i::_ -> if debug then eprintf "(OMD) spaces(%d::_) n=%d l=(%S)\n%!" i n (L.string_of_tokens l); if i = n + 2 then list_items ~p indents ((O,indents,rev_to_t new_item)::items) rest else if i < n + 2 then let sublist, remains = list_items ~p ((n+2)::indents) [(O,(n+2)::indents,rev_to_t new_item)] rest in list_items ~p:p indents (add sublist items) remains else (* i > n + 2 *) make_up p items, l end (* *) | Newlines 0::((Star|Minus|Plus)::(Space|Spaces _)::_ as l) | Newlines 0::(Number _::Dot::(Space|Spaces _)::_ as l) | Newlines 0::((Space|Spaces _)::Star::(Space|Spaces _)::_ as l) | Newlines 0::((Space|Spaces _)::Number _::Dot::(Space|Spaces _)::_ as l) -> list_items ~p:true indents items l | _ -> if debug then begin let rec string_of_items items = match items with | [] -> "" | (O,indent::_,item)::tl -> sprintf "(O,i=%d,%S)" (indent) (Omd_backend.html_of_md item) ^ string_of_items tl | (U,indent::_,item)::tl -> sprintf "(U,i=%d,%S)" (indent) (Omd_backend.html_of_md item) ^ string_of_items tl | _ -> "(weird)" in eprintf "(OMD) NALI parse_list: l=(%S) items=%s\n%!" (L.string_of_tokens l) (string_of_items items) end; (* not a list item *) make_up p items, l in match list_items ~p:false [] [] l with | rp, l -> rp::r, [Newline], l let icode ?(default_lang=default_lang) r _p l = assert_well_formed l; (* indented code: returns (r,p,l) where r is the result, p is the last thing read, l is the remains *) let dummy_tag = Tag("dummy_tag", object method to_string = "" method parser_extension = fun r p l -> None end) in let accu = Buffer.create 64 in let rec loop s tl = match s, tl with | (Newline|Newlines _ as p), (Space|Spaces(0|1))::_ -> (* 1, 2 or 3 spaces. *) (* -> Return what's been found as code because what follows isn't. *) Code_block(default_lang, Buffer.contents accu) :: r, [p], tl | (Newline|Newlines _ as p), Spaces(n)::tl -> assert(n>0); (* At least 4 spaces, it's still code. *) Buffer.add_string accu (L.string_of_token p); loop (if n >= 4 then Spaces(n-4) else if n = 3 then Space else dummy_tag) tl | (Newline|Newlines _ as p), (not_spaces::_ as tl) -> (* stop *) Code_block(default_lang, Buffer.contents accu) :: r, [p], tl (* -> Return what's been found as code because it's no more code. *) | p, e::tl -> Buffer.add_string accu (L.string_of_token p); (* html entities are to be converted later! *) loop e tl | p, [] -> Buffer.add_string accu (L.string_of_token p); Code_block(default_lang, Buffer.contents accu)::r, [p], [] in match l with | Spaces n::tl -> if n >= 4 then Some(loop (Spaces(n-4)) tl) else if n = 3 then Some(loop Space tl) else Some(loop dummy_tag tl) | _ -> assert false (* Returns [(r,p,l)] where [r] is the result, [p] is the last thing read, and [l] is what remains. *) let spaces_at_beginning_of_line main_loop default_lang n r previous lexemes = assert_well_formed lexemes; assert (n > 0); if n <= 3 then ( match lexemes with | (Star|Minus|Plus) :: (Space|Spaces _) :: _ -> (* unordered list *) parse_list main_loop r [] (L.make_space n::lexemes) | (Number _)::Dot::(Space|Spaces _)::tl -> (* ordered list *) parse_list main_loop r [] (L.make_space n::lexemes) | [] | (Newline|Newlines _) :: _ -> (* blank line, skip spaces *) r, previous, lexemes | _::_ -> Text (" ")::r, previous, lexemes ) else ( (* n>=4, blank line or indented code *) match lexemes with | [] | (Newline|Newlines _) :: _ -> r, previous, lexemes | _ -> match icode ~default_lang r [Newline] (L.make_space n :: lexemes) with | Some(r,p,l) -> r,p,l | None -> if debug then eprintf "(OMD) Omd_parser.icode or \ Omd_parser.main_loop is broken\n%!"; assert false ) let spaces_not_at_beginning_of_line ?(html=false) n r lexemes = assert_well_formed lexemes; assert (n > 0); if n = 1 then (Text " "::r), [Space], lexemes else ( match lexemes with | Newline :: tl when not html -> if debug then eprintf "(OMD) 2 or more spaces before a newline, eat the newline\n%!"; Br::r, [Spaces(n-2)], tl | Newlines k :: tl when not html -> if debug then eprintf "(OMD) 2 or more spaces before a newline, eat 1 newline"; let newlines = if k = 0 then Newline else Newlines(k-1) in Br::r, [Spaces(n-2)], newlines :: tl | _ -> assert (n>1); (Text (String.make n ' ')::r), [Spaces(n-2)], lexemes ) let maybe_autoemail r p l = assert_well_formed l; match l with | Lessthan::tl -> begin match fsplit ~excl:(function (Newline|Newlines _|Space|Spaces _) :: _-> true | [] -> true | _ -> false) ~f:(function At::tl -> Split([],tl) | _ -> Continue) tl with | None -> None | Some(left, right) -> match fsplit ~excl:(function | (Newline|Newlines _|Space|Spaces _) :: _-> true | [] -> true | _ -> false) ~f:(function Greaterthan::tl -> Split([],tl) | Greaterthans 0::tl -> Split([],Greaterthan::tl) | Greaterthans n::tl -> Split([],Greaterthans(n-1)::tl) | _ -> Continue) right with | None -> None | Some(domain, tl) -> let email = L.string_of_tokens left ^ "@" ^ L.string_of_tokens domain in Some(Url("mailto:"^email,[Text email],"")::r,[Greaterthan],tl) end | _ -> failwith "Omd_parser.maybe_autoemail: wrong use of the function." let is_hex s = String.length s > 1 && (s.[0] = 'X' || s.[0] = 'x') && (let rec loop i = i = String.length s || (match s.[i] with | '0' .. '9' | 'A' .. 'F' | 'a' .. 'f' -> loop (succ i) | _ -> false) in loop 1) let mediatypetextomd : string list ref = ref [] let filter_text_omd_rev l = let rec loop b r = function | [] -> if b then r else l | ("media:type", Some "text/omd")::tl -> loop true r tl | e::tl -> loop b (e::r) tl in loop false [] l exception Orphan_closing of string * l * l let rec main_impl_rev ~html (r:r) (previous:p) (lexemes:l) = (* if debug then eprintf "(OMD) main_impl_rev html=%b\n%!" html; *) assert_well_formed lexemes; if debug then eprintf "(OMD) main_impl_rev html=%b r=%s p=(%s) l=(%s)\n%!" html (Omd_backend.sexpr_of_md (List.rev r)) (L.destring_of_tokens previous) (L.destring_of_tokens lexemes); match previous, lexemes with (* no more to process *) | _, [] -> (* return the result (/!\ it has to be reversed as some point) *) r (* Tag: tag system $\cup$ high-priority extension mechanism *) | _, Tag(_name, e) :: tl -> begin match e#parser_extension r previous tl with | Some(r, p, l) -> main_impl_rev ~html r p l | None -> main_impl_rev ~html r previous tl end (* HTML comments *) | _, (Lessthan as t)::(Exclamation::Minuss 0::c as tl) -> begin let f = function | (Minuss _ as m)::(Greaterthan|Greaterthans _ as g)::tl -> Split([g;m], tl) | _ -> Continue in match fsplit ~f:f lexemes with | None -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end | Some (comments, new_tl) -> let r = Html_comment(L.string_of_tokens comments) :: r in main_impl_rev ~html r [Newline] new_tl end (* email-style quoting / blockquote *) | ([]|[Newline|Newlines _]), Greaterthan::(Space|Spaces _)::_ -> begin match emailstyle_quoting main_loop r previous (Newline::lexemes) with | Some(r,p,l) -> main_impl_rev ~html r p l | None -> if debug then eprintf "(OMD) Omd_parser.emailstyle_quoting or \ Omd_parser.main_loop is broken\n%!"; assert false end (* email-style quoting, with lines starting with spaces! *) | ([]|[Newline|Newlines _]), (Space|Spaces(0|1) as s) :: Greaterthan :: (Space|Spaces _)::_ -> (* It's 1, 2 or 3 spaces, not more because it wouldn't mean quoting anymore but code. *) begin let new_r, p, rest = let foo, rest = match unindent (L.length s) (Newline::lexemes) with | (Newline|Newlines _)::foo, rest -> foo, rest | res -> res in match emailstyle_quoting main_loop [] previous (Newline::foo) with | Some(new_r, p, []) -> new_r, p, rest | _ -> if debug then eprintf "(OMD) Omd_parser.emailstyle_quoting or \ Omd_parser.main_loop is broken\n%!"; assert false in main_impl_rev ~html (new_r@r) [Newline] rest end (* minus *) | ([]|[Newline|Newlines _]), (Minus|Minuss _ as t) :: ((Space|Spaces _)::_ as tl) -> (* maybe hr *) begin match hr_m lexemes with | None -> (* no hr, so it could be a list *) begin match t with | Minus -> (* it's a list *) let md, new_p, new_l = parse_list main_loop r [] lexemes in main_impl_rev ~html md new_p new_l | _ -> (* not a list *) begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end end | Some l -> (* hr *) main_impl_rev ~html (Hr::r) [Newline] l end | ([]|[Newline|Newlines _]), (Minus|Minuss _ as t)::tl -> begin match hr_m lexemes with | None -> (* no hr, and it's not a list either because it's not followed by spaces *) begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end | Some l -> (* hr *) main_impl_rev ~html (Hr::r) [Newline] l end (* hashes *) | ([]|[(Newline|Newlines _)]), (Hashs n as t) :: ((Space|Spaces _) :: ttl as tl) | ([]|[(Newline|Newlines _)]), (Hashs n as t) :: (ttl as tl) -> (* hash titles *) if n <= 4 then match read_title main_loop (n+2) r previous ttl with | Some(r, p, l) -> main_impl_rev ~html r p l | None -> if debug then eprintf "(OMD) Omd_parser.read_title or \ Omd_parser.main_loop is broken\n%!"; assert false else begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end | ([]|[(Newline|Newlines _)]), Hash :: (Space|Spaces _) :: tl | ([]|[(Newline|Newlines _)]), Hash :: tl -> (* hash titles *) begin match read_title main_loop 1 r previous tl with | Some(r, p, l) -> main_impl_rev ~html r p l | None -> if debug then eprintf "(OMD) Omd_parser.read_title or \ Omd_parser.main_loop is broken\n%!"; assert false end | _, (Hash|Hashs _ as t) :: tl -> (* hash -- no title *) begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end (* spaces after a newline: could lead to hr *) | ([]|[Newline|Newlines _]), ((Space|Spaces _) as sp) :: tl -> begin match hr tl with | None -> (* No [Hr], but maybe [Ul], [Ol], code,... *) let n = L.length sp in let r, p, l = spaces_at_beginning_of_line main_loop default_lang n r previous tl in main_impl_rev ~html r p l | Some tl -> main_impl_rev ~html (Hr::r) [Newline] tl end (* spaces anywhere *) | _, ((Space|Spaces _) as t) :: tl -> (* too many cases to be handled here *) let n = L.length t in let r, p, l = spaces_not_at_beginning_of_line ~html n r tl in main_impl_rev ~html r p l (* underscores *) | _, (Underscore as t) :: tl -> (* one "orphan" underscore, or emph *) (match uemph_or_bold 1 tl with | None -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end | Some(x, new_tl) -> main_impl_rev ~html (Emph(main_impl ~html [] [t] x) :: r) [t] new_tl ) | _, (Underscores((0|1) as n) as t) :: tl -> (* 2 or 3 "orphan" underscores, or emph/bold *) (match uemph_or_bold (n+2) tl with | None -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end | Some(x, new_tl) -> if n = 0 then (* 1 underscore *) main_impl_rev ~html (Bold(main_impl ~html [] [t] x) :: r) [t] new_tl else (* 2 underscores *) main_impl_rev ~html (Emph([Bold(main_impl ~html [] [t] x)]) :: r) [t] new_tl ) (* enumerated lists *) | ([]|[Newline|Newlines _]), (Number _) :: Dot :: (Space|Spaces _) :: tl -> let md, new_p, new_l = parse_list main_loop r [] lexemes in main_impl_rev ~html md new_p new_l (* plus *) | ([]|[(Newline|Newlines _)]), Plus :: (Space|Spaces _) :: _ -> let md, new_p, new_l = parse_list main_loop r [] lexemes in main_impl_rev ~html md new_p new_l (* stars *) | ([]|[(Newline|Newlines _)]), Star :: (Space|Spaces _) :: _ -> (* maybe hr or new list *) begin match hr_s lexemes with | Some l -> main_impl_rev ~html (Hr::r) [Newline] l | None -> let md, new_p, new_l = parse_list main_loop r [] lexemes in main_impl_rev ~html md new_p new_l end | ([]|[(Newline|Newlines _)]), Stars _ :: _ when hr_s lexemes <> None -> (* hr *) (match hr_s lexemes with | Some l -> main_impl_rev ~html (Hr::r) [Newline] l | None -> assert false ) | ([]|[(Newline|Newlines _)]), (Star as t) :: tl -> (* maybe hr *) begin match hr_s lexemes with | Some l -> main_impl_rev ~html (Hr::r) [Newline] l | None -> (match semph_or_bold 1 tl with | Some(x, new_tl) -> main_impl_rev ~html (Emph(main_impl ~html [] [t] x) :: r) [t] new_tl | None -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end ) end | _, (Star as t) :: tl -> (* one "orphan" star, or emph // can't be hr *) (match semph_or_bold 1 tl with | Some(x, new_tl) -> main_impl_rev ~html (Emph(main_impl ~html [] [t] x) :: r) [t] new_tl | None -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end ) | _, (Stars((0|1) as n) as t) :: tl -> (* 2 or 3 "orphan" stars, or emph/bold *) (match semph_or_bold (n+2) tl with | Some(x, new_tl) -> if n = 0 then main_impl_rev ~html (Bold(main_impl ~html [] [t] x) :: r) [t] new_tl else main_impl_rev ~html (Emph([Bold(main_impl ~html [] [t] x)]) :: r) [t] new_tl | None -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end ) (* backslashes *) | _, Backslash :: (Newline as t) :: tl -> (* \\n *) main_impl_rev ~html (Br :: r) [t] tl | _, Backslash :: Newlines 0 :: tl -> (* \\n\n\n\n... *) main_impl_rev ~html (Br :: r) [Backslash; Newline] (Newline :: tl) | _, Backslash :: Newlines n :: tl -> assert (n >= 0); (* \\n\n\n\n... *) main_impl_rev ~html (Br :: r) [Backslash; Newline] (Newlines (n-1) :: tl) | _, Backslash :: (Backquote as t) :: tl -> (* \` *) main_impl_rev ~html (Text ("`") :: r) [t] tl | _, Backslash :: Backquotes 0 :: tl -> (* \````... *) main_impl_rev ~html (Text ("`") :: r) [Backslash; Backquote] (Backquote :: tl) | _, Backslash :: Backquotes n :: tl -> assert (n >= 0); (* \````... *) main_impl_rev ~html (Text ("`") :: r) [Backslash; Backquote] (Backquotes (n-1) :: tl) | _, Backslash :: (Star as t) :: tl -> (* \* *) main_impl_rev ~html (Text ("*") :: r) [t] tl | _, Backslash :: Stars 0 :: tl -> (* \****... *) main_impl_rev ~html (Text ("*") :: r) [Backslash; Star] (Star :: tl) | _, Backslash :: Stars n :: tl -> assert (n >= 0); (* \****... *) main_impl_rev ~html (Text ("*") :: r) [Backslash; Star] (Stars (n-1) :: tl) | _, Backslash :: (Underscore as t) :: tl -> (* \_ *) main_impl_rev ~html (Text ("_") :: r) [t] tl | _, Backslash :: Underscores 0 :: tl -> (* \___... *) main_impl_rev ~html (Text ("_") :: r) [Backslash; Underscore] (Underscore :: tl) | _, Backslash :: Underscores n :: tl -> assert (n >= 0); (* \___... *) main_impl_rev ~html (Text ("_") :: r) [Backslash; Underscore] (Underscores (n-1) :: tl) | _, Backslash :: (Obrace as t) :: tl -> (* \{ *) main_impl_rev ~html (Text ("{") :: r) [t] tl | _, Backslash :: Obraces 0 :: tl -> (* \{{{... *) main_impl_rev ~html (Text ("{") :: r) [Backslash; Obrace] (Obrace :: tl) | _, Backslash :: Obraces n :: tl -> assert (n >= 0); (* \{{{... *) main_impl_rev ~html (Text ("{") :: r) [Backslash; Obrace] (Obraces (n-1) :: tl) | _, Backslash :: (Cbrace as t) :: tl -> (* \} *) main_impl_rev ~html (Text ("}") :: r) [t] tl | _, Backslash :: Cbraces 0 :: tl -> (* \}}}... *) main_impl_rev ~html (Text ("}") :: r) [Backslash; Cbrace] (Cbrace :: tl) | _, Backslash :: Cbraces n :: tl -> assert (n >= 0); (* \}}}... *) main_impl_rev ~html (Text ("}") :: r) [Backslash; Cbrace] (Cbraces (n-1) :: tl) | _, Backslash :: (Obracket as t) :: tl -> (* \[ *) main_impl_rev ~html (Text ("[") :: r) [t] tl | _, Backslash :: Obrackets 0 :: tl -> (* \[[[... *) main_impl_rev ~html (Text ("[") :: r) [Backslash; Obracket] (Obracket :: tl) | _, Backslash :: Obrackets n :: tl -> assert (n >= 0); (* \[[[... *) main_impl_rev ~html (Text ("[") :: r) [Backslash; Obracket] (Obrackets (n-1) :: tl) | _, Backslash :: (Cbracket as t) :: tl -> (* \} *) main_impl_rev ~html (Text ("]") :: r) [t] tl | _, Backslash :: Cbrackets 0 :: tl -> (* \}}}... *) main_impl_rev ~html (Text ("]") :: r) [Backslash; Cbracket] (Cbracket :: tl) | _, Backslash :: Cbrackets n :: tl -> assert (n >= 0); (* \}}}... *) main_impl_rev ~html (Text ("]") :: r) [Backslash; Cbracket] (Cbrackets (n-1) :: tl) | _, Backslash :: (Oparenthesis as t) :: tl -> (* \( *) main_impl_rev ~html (Text ("(") :: r) [t] tl | _, Backslash :: Oparenthesiss 0 :: tl -> (* \(((... *) main_impl_rev ~html (Text ("(") :: r) [Backslash; Oparenthesis] (Oparenthesis :: tl) | _, Backslash :: Oparenthesiss n :: tl -> assert (n >= 0); (* \(((... *) main_impl_rev ~html (Text ("(") :: r) [Backslash; Oparenthesis] (Oparenthesiss (n-1) :: tl) | _, Backslash :: (Cparenthesis as t) :: tl -> (* \) *) main_impl_rev ~html (Text (")") :: r) [t] tl | _, Backslash :: Cparenthesiss 0 :: tl -> (* \)))... *) main_impl_rev ~html (Text (")") :: r) [Backslash; Cparenthesis] (Cparenthesis :: tl) | _, Backslash :: Cparenthesiss n :: tl -> assert (n >= 0); (* \)))... *) main_impl_rev ~html (Text (")") :: r) [Backslash; Cparenthesis] (Cparenthesiss (n-1) :: tl) | _, Backslash :: (Plus as t) :: tl -> (* \+ *) main_impl_rev ~html (Text ("+") :: r) [t] tl | _, Backslash :: Pluss 0 :: tl -> (* \+++... *) main_impl_rev ~html (Text ("+") :: r) [Backslash; Plus] (Plus :: tl) | _, Backslash :: Pluss n :: tl -> assert (n >= 0); (* \+++... *) main_impl_rev ~html (Text ("+") :: r) [Backslash; Plus] (Pluss (n-1) :: tl) | _, Backslash :: (Minus as t) :: tl -> (* \- *) main_impl_rev ~html (Text ("-") :: r) [t] tl | _, Backslash :: Minuss 0 :: tl -> (* \---... *) main_impl_rev ~html (Text ("-") :: r) [Backslash; Minus] (Minus :: tl) | _, Backslash :: Minuss n :: tl -> assert (n >= 0); (* \---... *) main_impl_rev ~html (Text ("-") :: r) [Backslash; Minus] (Minuss (n-1) :: tl) | _, Backslash :: (Dot as t) :: tl -> (* \. *) main_impl_rev ~html (Text (".") :: r) [t] tl | _, Backslash :: Dots 0 :: tl -> (* \....... *) main_impl_rev ~html (Text (".") :: r) [Backslash; Dot] (Dot :: tl) | _, Backslash :: Dots n :: tl -> assert (n >= 0); (* \....... *) main_impl_rev ~html (Text (".") :: r) [Backslash; Dot] (Dots (n-1) :: tl) | _, Backslash :: (Exclamation as t) :: tl -> (* \! *) main_impl_rev ~html (Text ("!") :: r) [t] tl | _, Backslash :: Exclamations 0 :: tl -> (* \!!!... *) main_impl_rev ~html (Text ("!") :: r) [Backslash; Exclamation] (Exclamation :: tl) | _, Backslash :: Exclamations n :: tl -> assert (n >= 0); (* \!!!... *) main_impl_rev ~html (Text ("!") :: r) [Backslash; Exclamation] (Exclamations (n-1) :: tl) | _, Backslash :: (Hash as t) :: tl -> (* \# *) main_impl_rev ~html (Text ("#") :: r) [t] tl | _, Backslash :: Hashs 0 :: tl -> (* \###... *) main_impl_rev ~html (Text ("#") :: r) [Backslash; Hash] (Hash :: tl) | _, Backslash :: Hashs n :: tl -> assert (n >= 0); (* \###... *) main_impl_rev ~html (Text ("#") :: r) [Backslash; Hash] (Hashs (n-1) :: tl) | _, Backslash :: (Greaterthan as t) :: tl -> (* \> *) main_impl_rev ~html (Text (">") :: r) [t] tl | _, Backslash :: Greaterthans 0 :: tl -> (* \>>>... *) main_impl_rev ~html (Text (">") :: r) [Backslash; Greaterthan] (Greaterthan :: tl) | _, Backslash :: Greaterthans n :: tl -> assert (n >= 0); (* \>>>... *) main_impl_rev ~html (Text (">") :: r) [Backslash; Greaterthan] (Greaterthans (n-1) :: tl) | _, Backslash :: (Lessthan as t) :: tl -> (* \< *) main_impl_rev ~html (Text ("<") :: r) [t] tl | _, Backslash :: Lessthans 0 :: tl -> (* \<<<... *) main_impl_rev ~html (Text ("<") :: r) [Backslash; Lessthan] (Lessthan :: tl) | _, Backslash :: Lessthans n :: tl -> assert (n >= 0); (* \<<<... *) main_impl_rev ~html (Text ("<") :: r) [Backslash; Lessthan] (Lessthans (n-1) :: tl) | _, (Backslashs 0 as t) :: tl -> (* \\\\... *) main_impl_rev ~html (Text ("\\") :: r) [t] tl | _, (Backslashs n as t) :: tl -> (* \\\\... *) if n mod 2 = 0 then main_impl_rev ~html (Text(String.make ((n+2)/2) '\\') :: r) [t] tl else main_impl_rev ~html (Text(String.make ((n+2)/2) '\\') :: r) [t] (Backslash :: tl) | _, Backslash::[] -> main_impl_rev ~html (Text "\\" :: r) [] [] | _, Backslash::tl -> main_impl_rev ~html (Text "\\" :: r) [Backslash] tl (* < *) | _, (Lessthan|Lessthans _ as t) :: (Word("http"|"https"|"ftp"|"ftps"|"ssh"|"afp"|"imap") as w) :: Colon::Slashs(n)::tl -> (* "semi-automatic" URLs *) let rec read_url accu = function | (Newline|Newlines _)::tl -> None | Greaterthan::tl -> let url = (L.string_of_token w) ^ "://" ^ (if n = 0 then "" else String.make (n-1) '/') ^ L.string_of_tokens (List.rev accu) in Some(url, tl) | x::tl -> read_url (x::accu) tl | [] -> None in begin match read_url [] tl with | Some(url, new_tl) -> let r = match t with | Lessthans 0 -> Text "<" :: r | Lessthans n -> Text(String.make (n+1) '<') :: r | _ -> r in main_impl_rev ~html (Url(url,[Text url],"")::r) [] new_tl | None -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end end (* Word(w) *) | _, Word w::tl -> main_impl_rev ~html (Text w :: r) [Word w] tl (* newline at the end *) | _, [Newline] -> NL::r (* named html entity *) | _, Ampersand::((Word w::((Semicolon|Semicolons _) as s)::tl) as tl2) -> if StringSet.mem w htmlcodes_set then begin match s with | Semicolon -> main_impl_rev ~html (Raw("&"^w^";")::r) [s] tl | Semicolons 0 -> main_impl_rev ~html (Raw("&"^w^";")::r) [s] (Semicolon::tl) | Semicolons n -> main_impl_rev ~html (Raw("&"^w^";")::r) [s] (Semicolons(n-1)::tl) | _ -> assert false end else main_impl_rev ~html (Raw("&")::r) [] tl2 (* digit-coded html entity *) | _, Ampersand::((Hash::Number w::((Semicolon|Semicolons _) as s)::tl) as tl2) -> if String.length w <= 4 then begin match s with | Semicolon -> main_impl_rev ~html (Raw("&#"^w^";")::r) [s] tl | Semicolons 0 -> main_impl_rev ~html (Raw("&#"^w^";")::r) [s] (Semicolon::tl) | Semicolons n -> main_impl_rev ~html (Raw("&#"^w^";")::r) [s] (Semicolons(n-1)::tl) | _ -> assert false end else main_impl_rev ~html (Raw("&")::r) [] tl2 (* maybe hex digit-coded html entity *) | _, Ampersand::((Hash::Word w::((Semicolon|Semicolons _) as s)::tl) as tl2) when is_hex w -> if String.length w <= 4 then begin match s with | Semicolon -> main_impl_rev ~html (Raw("&#"^w^";")::r) [s] tl | Semicolons 0 -> main_impl_rev ~html (Raw("&#"^w^";")::r) [s] (Semicolon::tl) | Semicolons n -> main_impl_rev ~html (Raw("&#"^w^";")::r) [s] (Semicolons(n-1)::tl) | _ -> assert false end else main_impl_rev ~html (Raw("&")::r) [] tl2 (* Ampersand *) | _, Ampersand::tl -> main_impl_rev ~html (Raw("&")::r) [Ampersand] tl (* 2 Ampersands *) | _, Ampersands(0)::tl -> main_impl_rev ~html (Raw("&")::r) [] (Ampersand::tl) (* Several Ampersands (more than 2) *) | _, Ampersands(n)::tl -> main_impl_rev ~html (Raw("&")::r) [] (Ampersands(n-1)::tl) (* backquotes *) | _, (Backquote|Backquotes _ as t)::tl -> begin match bcode ~default_lang r previous lexemes with | Some(r, p, l) -> main_impl_rev ~html r p l | None -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end end (* HTML *) (* <br/> and <hr/> with or without space(s) *) | _, (Lessthan::Word("br"|"hr" as w)::Slash ::(Greaterthan|Greaterthans _ as g)::tl) | _, (Lessthan::Word("br"|"hr" as w)::(Space|Spaces _)::Slash ::(Greaterthan|Greaterthans _ as g)::tl) -> begin match g with | Greaterthans 0 -> main_impl_rev ~html (Raw("<"^w^" />")::r) [Greaterthan] (Greaterthan::tl) | Greaterthans n -> main_impl_rev ~html (Raw("<"^w^" />")::r) [Greaterthan] (Greaterthans(n-1)::tl) | _ -> main_impl_rev ~html (Raw("<"^w^" />")::r) [Greaterthan] tl end (* awaited orphan html closing tag *) | _, Lessthan::Slash::Word(w)::(Greaterthan|Greaterthans _ as g)::tl when !mediatypetextomd <> [] -> raise (Orphan_closing(w, lexemes, (match g with | Greaterthans 0 -> Greaterthan::tl | Greaterthans n -> Greaterthans(n-1)::tl | _ -> tl))) (* block html *) | ([] | [Newline|Newlines _|Tag("HTMLBLOCK", _)]), (Lessthan as t) ::((Word(tagnametop) as w) ::((Space|Spaces _|Greaterthan|Greaterthans _) ::_ as html_stuff) as tlx) -> if StringSet.mem tagnametop inline_htmltags_set then main_impl_rev ~html r [Word ""] lexemes else if not (blind_html || StringSet.mem tagnametop htmltags_set) then begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tlx | Some(r, p, l) -> main_impl_rev ~html r p l end else let read_html() = let module T = struct type t = | Awaiting of string | Open of string type interm = | HTML of string * (string * string option) list * interm list | FTOKENS of L.t | RTOKENS of L.t | MD of Omd_representation.t let rec md_of_interm_list html l = let md_of_interm_list ?(html=html) l = md_of_interm_list html l in match l with | [] -> [] | HTML(t, a, c)::tl -> ( let f_a = filter_text_omd_rev a in if f_a != a then Html_block (t, f_a, make_paragraphs (md_of_interm_list ~html:false (List.rev c))) :: md_of_interm_list tl else Html_block (t, f_a, md_of_interm_list ~html:true (List.rev c)) :: md_of_interm_list tl ) | MD md::tl -> md@md_of_interm_list tl | RTOKENS t1::FTOKENS t2::tl -> md_of_interm_list (FTOKENS(List.rev_append t1 t2)::tl) | RTOKENS t1::RTOKENS t2::tl -> md_of_interm_list (FTOKENS(List.rev_append t1 (List.rev t2))::tl) | FTOKENS t1::FTOKENS t2::tl -> md_of_interm_list (FTOKENS(t1@t2)::tl) | FTOKENS t :: tl -> if html then Raw(L.string_of_tokens t) :: md_of_interm_list tl else main_loop ~html [] [Word ""] t @ md_of_interm_list tl | RTOKENS t :: tl -> md_of_interm_list (FTOKENS(List.rev t) :: tl) let md_of_interm_list l = md_of_interm_list true l let = let b = Buffer.create 64 in List.iter (function | Open t -> bprintf b "{B/Open %s}" t | Awaiting t -> bprintf b "{B/Awaiting %s}" t ) tagstatus; Buffer.contents b end in let add_token_to_body x body = match body with | T.RTOKENS r :: body -> T.RTOKENS(x::r)::body | _ -> T.RTOKENS[x] :: body in let rec loop (body:T.interm list) attrs tokens = if debug then eprintf "(OMD) 3333 BHTML loop body=%S tagstatus=%S %S\n%!" (Omd_backend.sexpr_of_md(T.md_of_interm_list body)) (T.string_of_tagstatus tagstatus) (L.destring_of_tokens tokens); match tokens with | [] -> begin match tagstatus with | [] -> Some(body, tokens) | T.Open t :: _ when StringSet.mem t html_void_elements -> Some(body, tokens) | _ -> if debug then eprintf "(OMD) 3401 BHTML Not enough to read\n%!"; None end | Lessthans n::tokens -> begin match tagstatus with | T.Awaiting _ :: _ -> None | _ -> if debug then eprintf "(OMD) 3408 BHTML loop\n%!"; loop (add_token_to_body (if n = 0 then Lessthan else Lessthans(n-1)) body) attrs tagstatus (Lessthan::tokens) end (* self-closing tags *) | Slash::Greaterthan::tokens -> begin match tagstatus with | T.Awaiting(tagname) :: when StringSet.mem tagname html_void_elements -> loop [T.HTML(tagname, attrs, [])] [] tagstatus tokens | _ -> if debug then eprintf "(OMD) 3419 BHTML loop\n%!"; loop (add_token_to_body Slash (add_token_to_body Greaterthan body)) attrs tagstatus tokens end (* closing the tag opener *) | Lessthan::Slash::(Word(tagname) as w) ::(Greaterthan|Greaterthans _ as g)::tokens -> begin match tagstatus with | T.Open t :: _ when t = tagname -> if debug then eprintf "(OMD) 3375 BHTML properly closing %S\n%!" t; Some(body, (match g with | Greaterthans 0 -> Greaterthan :: tokens | Greaterthans n -> Greaterthans(n-1) :: tokens | _ -> tokens)) | T.Open t :: _ -> if debug then eprintf "(OMD) 3379 BHTML wrongly closing %S with %S 1\n%!" t tagname; loop (T.RTOKENS[g;w;Slash;Lessthan]::body) [] tagstatus tokens | T.Awaiting t :: _ -> if debug then eprintf "(OMD) 3383 BHTML wrongly closing %S with %S 2\n%!" t tagname; if !mediatypetextomd <> [] then raise (Orphan_closing(t, lexemes, (match g with | Greaterthans 0 -> Greaterthan::tokens | Greaterthans n -> Greaterthans(n-1)::tokens | _ -> tokens))) else None | [] -> if debug then eprintf "(OMD) BHTML wrongly closing %S 3\n%!" tagname; None end (* tag *) | Lessthan::(Word(tagname) as word)::tokens when blind_html || StringSet.mem tagname htmltags_set -> if debug then eprintf "(OMD) 3489 BHTML <Word(%s)...\n%!" tagname; begin match tagstatus with | T.Open(t) :: _ when t <> tagname && StringSet.mem t html_void_elements -> None | T.Awaiting _ :: _ -> None | _ -> if attrs <> [] then begin if debug then eprintf "(OMD) 3496 BHTML tag %S but attrs <> []\n%!" tagname; None end else begin if debug then eprintf "(OMD) 3421 BHTML tag %S, tagstatus=%S, \ attrs=[], tokens=%S\n%!" tagname (T.string_of_tagstatus tagstatus) (L.destring_of_tokens tokens); match loop [] [] (T.Awaiting tagname::tagstatus) tokens with | None -> if debug then eprintf "(OMD) 3489 BHTML loop\n%!"; loop (add_token_to_body word (add_token_to_body Lessthan body)) attrs tagstatus tokens | Some(b, tokens) -> if debug then begin eprintf "(OMD) 3433 BHTML tagstatus=%S tokens=%S\n%!" (T.string_of_tagstatus tagstatus) (L.string_of_tokens tokens) end; Some(b@body, tokens) end end (* end of opening tag *) | Greaterthan::tokens -> begin match tagstatus with | T.Awaiting t :: -> if List.mem ("media:type", Some "text/omd") attrs then ( mediatypetextomd := t :: !mediatypetextomd; try ignore(main_impl_rev ~html [] [] tokens); if debug then eprintf "(OMD) 3524 BHTML closing tag not found \ in %S\n%!" (L.destring_of_tokens tokens); warn (sprintf "Closing tag `%s' not found for text/omd zone." t); mediatypetextomd := List.tl !mediatypetextomd; None with Orphan_closing(tagname, delimiter, after) -> let before = let rec f r = function | Lessthans n as e :: tl -> begin match delimiter with | Lessthan::_ -> if Lessthan::tl = delimiter then List.rev (if n = 0 then Lessthan::r else Lessthans(n-1)::r) else f (e::r) tl | _ -> if tl == delimiter || tl = delimiter then List.rev r else f (e::r) tl end | e::tl as l -> if l == delimiter || l = delimiter then List.rev r else if tl == delimiter || tl = delimiter then List.rev (e::r) else f (e::r) tl | [] -> List.rev r in f [] tokens in if debug then eprintf "(OMD) 3552 BHTML tokens=%s delimiter=%s \ after=%s before=%s (tagname=t)=%b\n%!" (L.destring_of_tokens tokens) (L.destring_of_tokens delimiter) (L.destring_of_tokens after) (L.destring_of_tokens before) (tagname = t); (match !mediatypetextomd with | _ :: tl -> mediatypetextomd := tl | [] -> assert false); if tagname = t then loop [T.HTML (t, attrs, [T.MD (main_impl ~html [] [] (tag_setext main_loop before))])] [] tagstatus after else None ) else begin if debug then eprintf "(OMD) 3571 BHTML loop\n%!"; match loop body [] (T.Open t::tagstatus) tokens with | None -> if debug then eprintf "(OMD) 3519 BHTML \ Couldn't find an closing tag for %S\n%!" t; None | Some(body, l) -> if debug then eprintf "(OMD) 3498 BHTML Found a closing tag %s\n%!" t; match tagstatus with | _ :: _ -> loop [T.HTML(t, attrs, body)] [] tagstatus l | [] -> Some([T.HTML(t, attrs, body)], l) end | T.Open t :: _ -> if debug then eprintf "(OMD) 3591 BHTML Some `>` isn't for an opening tag\n%!"; loop (add_token_to_body Greaterthan body) attrs tagstatus tokens | [] -> if debug then eprintf "(OMD) 3542 BHTML tagstatus=[]\n%!"; None end (* maybe attribute *) | (Colon|Colons _|Underscore|Underscores _|Word _ as t)::tokens | (Space|Spaces _) ::(Colon|Colons _|Underscore|Underscores _|Word _ as t) ::tokens when (match tagstatus with | T.Awaiting _ :: _ -> true | _ -> false) -> begin let module Attribute_value = struct type t = Empty of name | Named of name | Void and name = string end in let open Attribute_value in let rec extract_attribute accu = function | (Space | Spaces _ | Newline) :: tokens-> Empty(L.string_of_tokens(List.rev accu)), tokens | (Greaterthan|Greaterthans _) :: _ as tokens-> Empty(L.string_of_tokens(List.rev accu)), tokens | Equal :: tokens -> Named(L.string_of_tokens(List.rev accu)), tokens | Colon | Colons _ | Underscore | Underscores _ | Word _ | Number _ | Minus | Minuss _ | Dot | Dots _ as t :: tokens -> extract_attribute (t::accu) tokens | tokens -> Void, tokens in match extract_attribute [t] tokens with | Empty attributename, tokens -> (* attribute with no explicit value *) if debug then eprintf "(OMD) 3628 BHTML loop\n%!"; loop body ((attributename, None)::attrs) tagstatus tokens | Named attributename, tokens -> begin match tokens with | Quotes 0 :: tokens -> if debug then eprintf "(OMD) 3661 BHTML empty attribute 1 %S\n%!" (L.string_of_tokens tokens); loop body ((attributename, Some "")::attrs) tagstatus tokens | Quote :: tokens -> begin if debug then eprintf "(OMD) 3668 BHTML non empty attribute 1 %S\n%!" (L.string_of_tokens tokens); match fsplit ~excl:(function | Quotes _ :: _ -> true | _ -> false) ~f:(function | Quote::tl -> Split([], tl) | _ -> Continue) tokens with | None -> None | Some(at_val, tokens) -> if debug then eprintf "(OMD) 3654 BHTML loop\n%!"; loop body ((attributename, Some(L.string_of_tokens at_val)) ::attrs) tagstatus tokens end | Doublequotes 0 :: tokens -> begin if debug then eprintf "(OMD) 3690 BHTML empty attribute 2 %S\n%!" (L.string_of_tokens tokens); loop body ((attributename, Some "")::attrs) tagstatus tokens end | Doublequote :: tokens -> begin if debug then eprintf "(OMD) 3698 BHTML non empty attribute 2 %S\n%!" (L.string_of_tokens tokens); match fsplit ~excl:(function | Doublequotes _ :: _ -> true | _ -> false) ~f:(function | Doublequote::tl -> Split([], tl) | _ -> Continue) tokens with | None -> None | Some(at_val, tokens) -> if debug then eprintf "(OMD) 3622 BHTML %s=%S %s\n%!" attributename (L.string_of_tokens at_val) (L.destring_of_tokens tokens); loop body ((attributename, Some(L.string_of_tokens at_val)) ::attrs) tagstatus tokens end | _ -> None end | Void, _ -> None end | x::tokens as dgts when (match tagstatus with T.Open _ :: _ -> true | _ -> false) -> begin if debug then eprintf "(OMD) 3620 BHTML general %S\n%!" (L.string_of_tokens dgts); loop (add_token_to_body x body) attrs tagstatus tokens end | (Newline | Space | Spaces _) :: tokens when (match tagstatus with T.Awaiting _ :: _ -> true | _ -> false) -> begin if debug then eprintf "(OMD) 3737 BHTML spaces\n%!"; loop body attrs tagstatus tokens end | (Newlines _ as x) :: tokens when (match tagstatus with T.Awaiting _ :: _ -> true | _ -> false) -> begin if debug then eprintf "(OMD) 3827 BHTML newlines\n%!"; warn "there are empty lines in what may be an HTML block"; loop (add_token_to_body x body) attrs tagstatus tokens end | _ -> if debug then eprintf "(OMD) 3742 BHTML fallback with \ tokens=%s and tagstatus=%s\n%!" (L.destring_of_tokens tokens) (match tagstatus with | [] -> "None" | T.Awaiting _ :: _ -> "Awaiting" | T.Open _ :: _ -> "Open (can't be)"); (match tagstatus with | [] -> Some(body, tokens) | T.Awaiting tag :: _ -> warn (sprintf "expected to read an open HTML tag (%s), \ but found nothing" tag); None | T.Open tag :: _ -> warn (sprintf "expected to find the closing HTML tag for %s, \ but found nothing" tag); None) in if debug then eprintf "(OMD) 3408 BHTML loop\n%!"; match loop [] [] [] lexemes with | Some(h, rest) -> Some(T.md_of_interm_list h, rest) | None -> None in begin match read_html() with | Some(h, rest) -> main_impl_rev ~html (h@r) [Tag("HTMLBLOCK", empty_extension)] rest | None -> let text = L.string_of_token t in main_impl_rev ~html (Text(text ^ tagnametop)::r) [w] html_stuff end (* / end of block HTML. *) (* inline HTML *) | _, (Lessthan as t) ::((Word(tagnametop) as w) ::((Space|Spaces _|Greaterthan|Greaterthans _) ::_ as html_stuff) as tlx) -> if (strict_html && not(StringSet.mem tagnametop inline_htmltags_set)) || not(blind_html || StringSet.mem tagnametop htmltags_set) then begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tlx | Some(r, p, l) -> main_impl_rev ~html r p l end else let read_html() = let module T = struct type t = | Awaiting of string | Open of string type interm = | HTML of string * (string * string option) list * interm list | TOKENS of L.t | MD of Omd_representation.t let rec md_of_interm_list = function | [] -> [] | HTML(t, a, c)::tl -> Html(t, a, md_of_interm_list(List.rev c))::md_of_interm_list tl | MD md::tl -> md @ md_of_interm_list tl | TOKENS t1::TOKENS t2::tl -> md_of_interm_list (TOKENS(t1@t2)::tl) | TOKENS t :: tl -> main_impl ~html [] [Word ""] (t) @ md_of_interm_list tl let = let b = Buffer.create 64 in List.iter (function | Open t -> bprintf b "{I/Open %s}" t | Awaiting t -> bprintf b "{I/Awaiting %s}" t ) tagstatus; Buffer.contents b end in let add_token_to_body x body = T.TOKENS[x]::body in let rec loop (body:T.interm list) attrs tokens = if debug then eprintf "(OMD) 3718 loop tagstatus=(%s) %s\n%!" (* eprintf "(OMD) 3718 loop tagstatus=(%s) body=(%s) %s\n%!" *) (T.string_of_tagstatus tagstatus) (* (Omd_backend.sexpr_of_md(T.md_of_interm_list body)) *) (L.destring_of_tokens tokens); match tokens with | [] -> begin match tagstatus with | [] -> Some(body, tokens) | T.Open(t)::_ when StringSet.mem t html_void_elements -> Some(body, tokens) | _ -> if debug then eprintf "(OMD) Not enough to read for inline HTML\n%!"; None end | Lessthans n::tokens -> begin match tagstatus with | T.Awaiting _ :: _ -> None | _ -> loop (add_token_to_body (if n = 0 then Lessthan else Lessthans(n-1)) body) attrs tagstatus (Lessthan::tokens) end (* self-closing tags *) | Slash::Greaterthan::tokens -> begin match tagstatus with | T.Awaiting(tagname):: when StringSet.mem tagname html_void_elements -> loop [T.HTML(tagname, attrs, [])] [] tagstatus tokens | _ -> loop (T.TOKENS[Greaterthan;Slash]::body) attrs tagstatus tokens end (* multiple newlines are not to be seen in inline HTML *) | Newlines _ :: _ -> if debug then eprintf "(OMD) Multiple lines in inline HTML\n%!"; (match tagstatus with | [] -> Some(body, tokens) | _ -> warn "multiple newlines in inline HTML"; None) (* maybe code *) | (Backquote | Backquotes _ as b)::tl -> begin match tagstatus with | T.Awaiting _ :: _ -> if debug then eprintf "(OMD) maybe code in inline HTML: no code\n%!"; None | [] -> if debug then eprintf "(OMD) maybe code in inline HTML: none\n%!"; None | T.Open _ :: _ -> if debug then eprintf "(OMD) maybe code in inline HTML: let's try\n%!"; begin match bcode [] [Space] tokens with | Some (((Code _::_) as c), p, l) -> if debug then eprintf "(OMD) maybe code in inline HTML: \ confirmed\n%!"; loop (T.MD c::body) [] tagstatus l | _ -> if debug then eprintf "(OMD) maybe code in inline HTML: failed\n%!"; loop (T.TOKENS[b]::body) [] tagstatus tl end end (* closing the tag *) | Lessthan::Slash::(Word(tagname) as w) ::(Greaterthan|Greaterthans _ as g)::tokens -> begin match tagstatus with | T.Open t :: _ when t = tagname -> if debug then eprintf "(OMD) 4136 properly closing %S tokens=%s\n%!" t (L.string_of_tokens tokens); Some(body, (match g with | Greaterthans 0 -> Greaterthan :: tokens | Greaterthans n -> Greaterthans(n-1) :: tokens | _ -> tokens)) | T.Open t :: _ -> if debug then eprintf "(OMD) 4144 \ wrongly closing %S with %S 1\n%!" t tagname; loop (T.TOKENS[g;w;Slash;Lessthan]::body) [] tagstatus tokens | T.Awaiting t :: _ -> if debug then eprintf "(OMD) 4149 \ wrongly closing %S with %S 2\n%!" t tagname; None | [] -> if debug then eprintf "(OMD) 4154 \ wrongly closing nothing with %S 3\n%!" tagname; None end (* tag *) | Lessthan::(Word(tagname) as word)::tokens when blind_html || (strict_html && StringSet.mem tagname inline_htmltags_set) || (not strict_html && StringSet.mem tagname htmltags_set) -> if debug then eprintf "(OMD) <%s...\n%!" tagname; begin match tagstatus with | T.Open(t) :: _ when t <> tagname && StringSet.mem t html_void_elements -> None | T.Awaiting _ :: _ -> None | _ -> begin if debug then eprintf "(OMD) 3796 tag %s, attrs=[]\n%!" tagname; match loop [] [] (T.Awaiting tagname::tagstatus) tokens with | None -> loop (T.TOKENS[word;Lessthan]::body) attrs tagstatus tokens | Some(b,tokens) -> Some(b@body, tokens) end end (* end of opening tag *) | Greaterthan::tokens -> if debug then eprintf "(OMD) 4185 end of opening tag tokens=%s \ tagstatus=%s\n%!" (L.string_of_tokens tokens) (T.string_of_tagstatus tagstatus); begin match tagstatus with | T.Awaiting t :: as ts -> begin match loop body [] (T.Open t::tagstatus) tokens with | None -> if debug then eprintf "(OMD) 4186 \ Couldn't find an closing tag for %S\n%!" t; None | Some(b, tokens) -> if debug then eprintf "(OMD) 4192 Found a closing tag %s ts=%s \ tokens=%s\n%!" t (T.string_of_tagstatus ts) (L.string_of_tokens tokens); match tagstatus with | [] -> Some(T.HTML(t, attrs, b)::body, tokens) | _ -> (* Note: we don't care about the value of [attrs] here because in we have a [tagstatus] matches [T.Open _ :: _] and there's a corresponding filter that will take care of attrs that will take care of it. *) loop (T.HTML(t, attrs, b)::body) [] tagstatus tokens end | T.Open t :: _ -> if debug then eprintf "(OMD) Turns out an `>` isn't for an opening tag\n%!"; loop (T.TOKENS[Greaterthan]::body) attrs tagstatus tokens | [] -> if debug then eprintf "(OMD) 4202 tagstatus=[]\n%!"; None end (* maybe attribute *) | (Colon|Colons _|Underscore|Underscores _|Word _ as t)::tokens | (Space|Spaces _) ::(Colon|Colons _|Underscore|Underscores _|Word _ as t) ::tokens when (match tagstatus with | T.Awaiting _ :: _ -> true | _ -> false) -> begin let module Attribute_value = struct type t = Empty of name | Named of name | Void and name = string end in let open Attribute_value in let rec extract_attribute accu = function | (Space | Spaces _ | Newline) :: tokens-> Empty(L.string_of_tokens(List.rev accu)), tokens | (Greaterthan|Greaterthans _) :: _ as tokens-> Empty(L.string_of_tokens(List.rev accu)), tokens | Equal :: tokens -> Named(L.string_of_tokens(List.rev accu)), tokens | Colon | Colons _ | Underscore | Underscores _ | Word _ | Number _ | Minus | Minuss _ | Dot | Dots _ as t :: tokens -> extract_attribute (t::accu) tokens | tokens -> Void, tokens in match extract_attribute [t] tokens with | Empty attributename, tokens -> (* attribute with no explicit value *) loop body ((attributename, None)::attrs) tagstatus tokens | Named attributename, tokens -> begin match tokens with | Quotes 0 :: tokens -> if debug then eprintf "(OMD) (IHTML) empty attribute 1 %S\n%!" (L.string_of_tokens tokens); loop body ((attributename, Some "")::attrs) tagstatus tokens | Quote :: tokens -> begin if debug then eprintf "(OMD) (IHTML) non empty attribute 1 %S\n%!" (L.string_of_tokens tokens); match fsplit ~excl:(function | Quotes _ :: _ -> true | _ -> false) ~f:(function | Quote::tl -> Split([], tl) | _ -> Continue) tokens with | None -> None | Some(at_val, tokens) -> loop body ((attributename, Some(L.string_of_tokens at_val)) ::attrs) tagstatus tokens end | Doublequotes 0 :: tokens -> begin if debug then eprintf "(OMD) (IHTML) empty attribute 2 %S\n%!" (L.string_of_tokens tokens); loop body ((attributename, Some "")::attrs) tagstatus tokens end | Doublequote :: tokens -> begin if debug then eprintf "(OMD) (IHTML) non empty attribute 2 %S\n%!" (L.string_of_tokens tokens); match fsplit ~excl:(function | Doublequotes _ :: _ -> true | _ -> false) ~f:(function | Doublequote::tl -> Split([], tl) | _ -> Continue) tokens with | None -> None | Some(at_val, tokens) -> if debug then eprintf "(OMD) (3957) %s=%S %s\n%!" attributename (L.string_of_tokens at_val) (L.destring_of_tokens tokens); loop body ((attributename, Some(L.string_of_tokens at_val)) ::attrs) tagstatus tokens end | _ -> None end | Void, _ -> None end | Backslash::x::tokens when (match tagstatus with T.Open _ :: _ -> true | _ -> false) -> loop (T.TOKENS[Backslash;x]::body) attrs tagstatus tokens | Backslashs(n)::x::tokens when (match tagstatus with T.Open _ :: _ -> true | _ -> false) && n mod 2 = 1 -> loop (T.TOKENS[Backslashs(n);x]::body) attrs tagstatus tokens | x::tokens when (match tagstatus with T.Open _ :: _ -> true | _ -> false) -> begin if debug then eprintf "(OMD) (4161) general %S\n%!" (L.string_of_tokens (x::tokens)); loop (T.TOKENS[x]::body) attrs tagstatus tokens end | (Newline | Space | Spaces _) :: tokens when (match tagstatus with T.Awaiting _ :: _ -> true | _ -> false) -> begin if debug then eprintf "(OMD) (4289) spaces\n%!"; loop body attrs tagstatus tokens end | _ -> if debug then eprintf "(OMD) (4294) \ fallback with tokens=%s and tagstatus=%s\n%!" (L.destring_of_tokens tokens) (T.string_of_tagstatus tagstatus); (match tagstatus with | [] -> Some(body, tokens) | T.Awaiting tag :: _ -> warn (sprintf "expected to read an open HTML tag (%s), \ but found nothing" tag); None | T.Open tag :: _ -> warn (sprintf "expected to find the closing HTML tag for %s, \ but found nothing" tag); None) in match loop [] [] [] lexemes with | Some(html, rest) -> Some(T.md_of_interm_list html, rest) | None -> None in begin match read_html() with | Some(h, rest) -> main_impl_rev ~html (h@r) [Greaterthan] rest | None -> let text = L.string_of_token t in main_impl_rev ~html (Text(text ^ tagnametop)::r) [w] html_stuff end (* / end of inline HTML. *) (* < : emails *) | _, (Lessthan as t)::tl -> begin match maybe_autoemail r previous lexemes with | Some(r,p,l) -> main_impl_rev ~html r p l | None -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end end (* line breaks *) | _, Newline::tl -> main_impl_rev ~html (NL::r) [Newline] tl | _, Newlines _::tl -> main_impl_rev ~html (NL::NL::r) [Newline] tl (* [ *) | _, (Obracket as t)::tl -> begin match maybe_link main_loop r previous tl with | Some(r, p, l) -> main_impl_rev ~html r p l | None -> match maybe_reference main_loop rc r previous tl with | Some(r, p, l) -> main_impl_rev ~html r p l | None -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end end (* img *) | _, (Exclamation|Exclamations _ as t) ::Obracket::Cbracket::Oparenthesis::tl -> (* image insertion with no "alt" *) (*  *) (try begin let b, tl = read_until_cparenth ~bq:true ~no_nl:false tl in (* new lines there are allowed *) let r (* updated result *) = match t with | Exclamations 0 -> Text "!" :: r | Exclamations n -> Text(String.make (n+1) '!') :: r | _ -> r in match try Some(read_until_space ~bq:false ~no_nl:true b) with Premature_ending -> None with | Some(url, tls) -> let title, should_be_empty_list = read_until_dq ~bq:true (snd (read_until_dq ~bq:true tls)) in let url = L.string_of_tokens url in let title = L.string_of_tokens title in main_impl_rev ~html (Img("", url, title) :: r) [Cparenthesis] tl | None -> let url = L.string_of_tokens b in main_impl_rev ~html (Img("", url, "") :: r) [Cparenthesis] tl end with | NL_exception -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end ) (* img ref *) | _, (Exclamation as t) ::Obracket::Cbracket::Obracket::tl -> (* ref image insertion with no "alt" *) (* ![][ref] *) (try let id, tl = read_until_cbracket ~bq:true ~no_nl:true tl in let fallback = extract_fallback main_loop tl lexemes in let id = L.string_of_tokens id in main_impl_rev ~html (Img_ref(rc, id, "", fallback) :: r) [Cbracket] tl with NL_exception -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end ) (* img *) | _, (Exclamation|Exclamations _ as t)::Obracket::tl -> (* image insertion with "alt" *) (*  *) (try match read_until_cbracket ~bq:true tl with | alt, Oparenthesis::ntl -> (try let alt = L.string_of_tokens alt in let path_title, rest = read_until_cparenth ~bq:true ~no_nl:false ntl in let path, title = try read_until_space ~bq:true ~no_nl:true path_title with Premature_ending -> path_title, [] in let title, nothing = if title <> [] then read_until_dq ~bq:true (snd(read_until_dq ~bq:true title)) else [], [] in if nothing <> [] then raise NL_exception; (* caught right below *) let r = match t with | Exclamations 0 -> Text "!" :: r | Exclamations n -> Text(String.make (n+1) '!') :: r | _ -> r in let path = L.string_of_tokens path in let title = L.string_of_tokens title in main_impl_rev ~html (Img(alt, path, title) :: r) [Cparenthesis] rest with | NL_exception (* if NL_exception was raised, then fall back to "text" *) | Premature_ending -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end ) | alt, Obracket::Word(id)::Cbracket::ntl | alt, Obracket::(Space|Spaces _)::Word(id)::Cbracket::ntl | alt, Obracket::(Space|Spaces _)::Word(id)::(Space|Spaces _) ::Cbracket::ntl | alt, Obracket::Word(id)::(Space|Spaces _)::Cbracket::ntl -> let fallback = extract_fallback main_loop ntl lexemes in let alt = L.string_of_tokens alt in main_impl_rev ~html (Img_ref(rc, id, alt, fallback)::r) [Cbracket] ntl | alt, Obracket::((Newline|Space|Spaces _|Word _|Number _)::_ as ntl) -> (try match read_until_cbracket ~bq:true ~no_nl:false ntl with | [], rest -> raise Premature_ending | id, rest -> let fallback = extract_fallback main_loop rest lexemes in let id = L.string_of_tokens id in let alt = L.string_of_tokens alt in main_impl_rev ~html (Img_ref(rc, id, alt, fallback)::r) [Cbracket] rest with | Premature_ending | NL_exception -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end ) | _ -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end with | Premature_ending -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end ) | _, (At|Bar|Caret|Cbrace|Colon|Comma|Cparenthesis|Cbracket|Dollar |Dot|Doublequote|Exclamation|Equal|Minus|Obrace|Oparenthesis |Percent|Plus|Question|Quote|Semicolon|Slash|Tab|Tilde |Greaterthan as t)::tl -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end | _, (Number _ as t):: tl -> begin match maybe_extension extensions r previous lexemes with | None -> main_impl_rev ~html (Text(L.string_of_token t)::r) [t] tl | Some(r, p, l) -> main_impl_rev ~html r p l end | _, (Ats _ | Bars _ | Carets _ | Cbraces _ | Cbrackets _ | Colons _ | Commas _ | Cparenthesiss _ | Dollars _ | Dots _ | Doublequotes _ | Equals _ | Exclamations _ | Greaterthans _ | Lessthans _ | Minuss _ | Obraces _ | Obrackets _ | Oparenthesiss _ | Percents _ | Pluss _ | Questions _ | Quotes _ | Semicolons _ | Slashs _ | Stars _ | Tabs _ | Tildes _ | Underscores _ as tk) :: tl -> begin match maybe_extension extensions r previous lexemes with | None -> let tk0, tks = L.split_first tk in let text = L.string_of_token tk0 in main_impl_rev ~html (Text text :: r) [tk0] (tks :: tl) | Some(r, p, l) -> main_impl_rev ~html r p l end and main_impl ~html (r:r) (previous:p) (lexemes:l) = (* if debug then eprintf "(OMD) main_impl html=%b\n%!" html; *) assert_well_formed lexemes; List.rev (main_loop_rev ~html r previous lexemes) and main_loop ?(html=false) (r:r) (previous:p) (lexemes:l) = main_impl ~html r previous lexemes and main_loop_rev ?(html=false) (r:r) (previous:p) (lexemes:l) = main_impl_rev ~html r previous lexemes let main_parse lexemes = main_loop [] [] (tag_setext main_loop lexemes) let parse lexemes = main_parse lexemes end let default_parse ?(extensions=[]) ?(default_lang="") lexemes = let e = extensions and d = default_lang in let module E = Default_env(Unit) in let module M = Make(struct include E let extensions = e let default_lang = d end) in M.main_parse lexemes