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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
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3
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4 (function(mod) {
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5 if (typeof exports == "object" && typeof module == "object") // CommonJS
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6 mod(require("../../lib/codemirror"));
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7 else if (typeof define == "function" && define.amd) // AMD
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8 define(["../../lib/codemirror"], mod);
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9 else // Plain browser env
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10 mod(CodeMirror);
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11 })(function(CodeMirror) {
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12 "use strict";
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13
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14 CodeMirror.runMode = function(string, modespec, callback, options) {
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15 var mode = CodeMirror.getMode(CodeMirror.defaults, modespec);
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16 var tabSize = (options && options.tabSize) || CodeMirror.defaults.tabSize;
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17
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18 // Create a tokenizing callback function if passed-in callback is a DOM element.
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19 if (callback.appendChild) {
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20 var ie = /MSIE \d/.test(navigator.userAgent);
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21 var ie_lt9 = ie && (document.documentMode == null || document.documentMode < 9);
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22 var node = callback, col = 0;
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23 node.textContent = "";
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24 callback = function(text, style) {
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25 if (text == "\n") {
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26 // Emitting LF or CRLF on IE8 or earlier results in an incorrect display.
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27 // Emitting a carriage return makes everything ok.
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28 node.appendChild(document.createTextNode(ie_lt9 ? '\r' : text));
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29 col = 0;
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30 return;
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31 }
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32 var content = "";
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33 // replace tabs
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34 for (var pos = 0;;) {
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35 var idx = text.indexOf("\t", pos);
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36 if (idx == -1) {
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37 content += text.slice(pos);
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38 col += text.length - pos;
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39 break;
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40 } else {
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41 col += idx - pos;
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42 content += text.slice(pos, idx);
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43 var size = tabSize - col % tabSize;
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44 col += size;
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45 for (var i = 0; i < size; ++i) content += " ";
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46 pos = idx + 1;
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47 }
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48 }
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49 // Create a node with token style and append it to the callback DOM element.
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50 if (style) {
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51 var sp = node.appendChild(document.createElement("span"));
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52 sp.className = "cm-" + style.replace(/ +/g, " cm-");
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53 sp.appendChild(document.createTextNode(content));
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54 } else {
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55 node.appendChild(document.createTextNode(content));
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56 }
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57 };
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58 }
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59
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60 var lines = CodeMirror.splitLines(string), state = (options && options.state) || CodeMirror.startState(mode);
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61 for (var i = 0, e = lines.length; i < e; ++i) {
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62 if (i) callback("\n");
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63 var stream = new CodeMirror.StringStream(lines[i], null, {
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64 lookAhead: function(n) { return lines[i + n] },
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65 baseToken: function() {}
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66 });
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67 if (!stream.string && mode.blankLine) mode.blankLine(state);
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68 while (!stream.eol()) {
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69 var style = mode.token(stream, state);
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70 callback(stream.current(), style, i, stream.start, state, mode);
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71 stream.start = stream.pos;
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72 }
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73 }
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74 };
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75
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76 });
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