65 lines
2.1 KiB
JavaScript
65 lines
2.1 KiB
JavaScript
CodeMirror.tagRangeFinder = (function() {
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var nameStartChar = "A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD";
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var nameChar = nameStartChar + "\-\:\.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040";
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var xmlTagStart = new RegExp("<(/?)([" + nameStartChar + "][" + nameChar + "]*)", "g");
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return function(cm, start) {
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var line = start.line, ch = start.ch, lineText = cm.getLine(line);
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function nextLine() {
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if (line >= cm.lastLine()) return;
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ch = 0;
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lineText = cm.getLine(++line);
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return true;
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}
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function toTagEnd() {
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for (;;) {
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var gt = lineText.indexOf(">", ch);
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if (gt == -1) { if (nextLine()) continue; else return; }
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var lastSlash = lineText.lastIndexOf("/", gt);
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var selfClose = lastSlash > -1 && /^\s*$/.test(lineText.slice(lastSlash + 1, gt));
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ch = gt + 1;
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return selfClose ? "selfClose" : "regular";
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}
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}
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function toNextTag() {
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for (;;) {
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xmlTagStart.lastIndex = ch;
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var found = xmlTagStart.exec(lineText);
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if (!found) { if (nextLine()) continue; else return; }
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ch = found.index + found[0].length;
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return found;
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}
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}
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var stack = [], startCh;
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for (;;) {
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var openTag = toNextTag(), end;
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if (!openTag || line != start.line || !(end = toTagEnd())) return;
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if (!openTag[1] && end != "selfClose") {
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stack.push(openTag[2]);
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startCh = ch;
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break;
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}
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}
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for (;;) {
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var next = toNextTag(), end, tagLine = line, tagCh = ch - (next ? next[0].length : 0);
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if (!next || !(end = toTagEnd())) return;
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if (end == "selfClose") continue;
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if (next[1]) { // closing tag
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for (var i = stack.length - 1; i >= 0; --i) if (stack[i] == next[2]) {
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stack.length = i;
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break;
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}
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if (!stack.length) return {
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from: CodeMirror.Pos(start.line, startCh),
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to: CodeMirror.Pos(tagLine, tagCh)
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};
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} else { // opening tag
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stack.push(next[2]);
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}
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}
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};
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})();
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