Web/SysAdmin/ckfinder/plugins/fileeditor/codemirror/js/highlight.js

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// Minimal framing needed to use CodeMirror-style parsers to highlight
// code. Load this along with tokenize.js, stringstream.js, and your
// parser. Then call highlightText, passing a string as the first
// argument, and as the second argument either a callback function
// that will be called with an array of SPAN nodes for every line in
// the code, or a DOM node to which to append these spans, and
// optionally (not needed if you only loaded one parser) a parser
// object.

// Stuff from util.js that the parsers are using.
var StopIteration = {toString: function() {return "StopIteration"}};

var Editor = {};
var indentUnit = 2;

(function(){
  function normaliseString(string) {
    var tab = "";
    for (var i = 0; i < indentUnit; i++) tab += " ";

    string = string.replace(/\t/g, tab).replace(/\u00a0/g, " ").replace(/\r\n?/g, "\n");
    var pos = 0, parts = [], lines = string.split("\n");
    for (var line = 0; line < lines.length; line++) {
      if (line != 0) parts.push("\n");
      parts.push(lines[line]);
    }

    return {
      next: function() {
        if (pos < parts.length) return parts[pos++];
        else throw StopIteration;
      }
    };
  }

  window.highlightText = function(string, callback, parser) {
    parser = (parser || Editor.Parser).make(stringStream(normaliseString(string)));
    var line = [];
    if (callback.nodeType == 1) {
      var node = callback;
      callback = function(line) {
        for (var i = 0; i < line.length; i++)
          node.appendChild(line[i]);
        node.appendChild(document.createElement("br"));
      };
    }

    try {
      while (true) {
        var token = parser.next();
        if (token.value == "\n") {
          callback(line);
          line = [];
        }
        else {
          var span = document.createElement("span");
          span.className = token.style;
          span.appendChild(document.createTextNode(token.value));
          line.push(span);
        }