// CodeMirror, copyright (c) by Marijn Haverbeke and others

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// Distributed under an MIT license: http://codemirror.net/LICENSE

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/*

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DTD mode

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Ported to CodeMirror by Peter Kroon <plakroon@gmail.com>

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Report bugs/issues here: https://github.com/codemirror/CodeMirror/issues

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GitHub: @peterkroon

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*/

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(function(mod) {

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if (typeof exports == "object" && typeof module == "object") // CommonJS

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mod(require("../../lib/codemirror"));

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else if (typeof define == "function" && define.amd) // AMD

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define(["../../lib/codemirror"], mod);

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else // Plain browser env

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mod(CodeMirror);

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})(function(CodeMirror) {

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"use strict";

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CodeMirror.defineMode("dtd", function(config) {

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var indentUnit = config.indentUnit, type;

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function ret(style, tp) {type = tp; return style;}

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function tokenBase(stream, state) {

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var ch = stream.next();

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if (ch == "<" && stream.eat("!") ) {

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if (stream.eatWhile(/[\-]/)) {

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state.tokenize = tokenSGMLComment;

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return tokenSGMLComment(stream, state);

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} else if (stream.eatWhile(/[\w]/)) return ret("keyword", "doindent");

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} else if (ch == "<" && stream.eat("?")) { //xml declaration

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state.tokenize = inBlock("meta", "?>");

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return ret("meta", ch);

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} else if (ch == "#" && stream.eatWhile(/[\w]/)) return ret("atom", "tag");

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else if (ch == "|") return ret("keyword", "seperator");

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else if (ch.match(/[\(\)\[\]\-\.,\+\?>]/)) return ret(null, ch);//if(ch === ">") return ret(null, "endtag"); else

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else if (ch.match(/[\[\]]/)) return ret("rule", ch);

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else if (ch == "\"" || ch == "'") {

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state.tokenize = tokenString(ch);

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return state.tokenize(stream, state);

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} else if (stream.eatWhile(/[a-zA-Z\?\+\d]/)) {

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var sc = stream.current();

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if( sc.substr(sc.length-1,sc.length).match(/\?|\+/) !== null )stream.backUp(1);

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return ret("tag", "tag");

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} else if (ch == "%" || ch == "*" ) return ret("number", "number");

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else {

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stream.eatWhile(/[\w\\\-_%.{,]/);

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return ret(null, null);

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}

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}

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function tokenSGMLComment(stream, state) {

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var dashes = 0, ch;

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while ((ch = stream.next()) != null) {

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if (dashes >= 2 && ch == ">") {

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state.tokenize = tokenBase;

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break;

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}

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dashes = (ch == "-") ? dashes + 1 : 0;

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}

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return ret("comment", "comment");

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}

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function tokenString(quote) {

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return function(stream, state) {

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var escaped = false, ch;

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while ((ch = stream.next()) != null) {

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if (ch == quote && !escaped) {

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state.tokenize = tokenBase;

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break;

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}

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escaped = !escaped && ch == "\\";

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}

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return ret("string", "tag");

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};

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}

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function inBlock(style, terminator) {

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return function(stream, state) {

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while (!stream.eol()) {

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if (stream.match(terminator)) {

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state.tokenize = tokenBase;

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break;

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}

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stream.next();

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}

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return style;

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};

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}

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return {

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startState: function(base) {

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return {tokenize: tokenBase,

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baseIndent: base || 0,

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stack: []};

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},

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token: function(stream, state) {

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if (stream.eatSpace()) return null;

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var style = state.tokenize(stream, state);

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var context = state.stack[state.stack.length-1];

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if (stream.current() == "[" || type === "doindent" || type == "[") state.stack.push("rule");

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else if (type === "endtag") state.stack[state.stack.length-1] = "endtag";

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else if (stream.current() == "]" || type == "]" || (type == ">" && context == "rule")) state.stack.pop();

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else if (type == "[") state.stack.push("[");

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return style;

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},

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indent: function(state, textAfter) {

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var n = state.stack.length;

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if( textAfter.match(/\]\s+|\]/) )n=n-1;

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else if(textAfter.substr(textAfter.length-1, textAfter.length) === ">"){

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if(textAfter.substr(0,1) === "<") {}

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else if( type == "doindent" && textAfter.length > 1 ) {}

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else if( type == "doindent")n--;

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else if( type == ">" && textAfter.length > 1) {}

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else if( type == "tag" && textAfter !== ">") {}

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else if( type == "tag" && state.stack[state.stack.length-1] == "rule")n--;

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else if( type == "tag")n++;

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else if( textAfter === ">" && state.stack[state.stack.length-1] == "rule" && type === ">")n--;

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else if( textAfter === ">" && state.stack[state.stack.length-1] == "rule") {}

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else if( textAfter.substr(0,1) !== "<" && textAfter.substr(0,1) === ">" )n=n-1;

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else if( textAfter === ">") {}

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else n=n-1;

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//over rule them all

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if(type == null || type == "]")n--;

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}

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return state.baseIndent + n * indentUnit;

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},

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electricChars: "]>"

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};

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});

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CodeMirror.defineMIME("application/xml-dtd", "dtd");

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});

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