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(function() { |
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"use strict"; |
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|
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var Pos = CodeMirror.Pos; |
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function cmp(a, b) { return a.line - b.line || a.ch - b.ch; } |
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|
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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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|
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function Iter(cm, line, ch, range) { |
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this.line = line; this.ch = ch; |
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this.cm = cm; this.text = cm.getLine(line); |
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this.min = range ? range.from : cm.firstLine(); |
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this.max = range ? range.to - 1 : cm.lastLine(); |
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} |
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|
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function tagAt(iter, ch) { |
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var type = iter.cm.getTokenTypeAt(Pos(iter.line, ch)); |
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return type && /\btag\b/.test(type); |
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} |
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|
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function nextLine(iter) { |
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if (iter.line >= iter.max) return; |
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iter.ch = 0; |
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iter.text = iter.cm.getLine(++iter.line); |
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return true; |
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} |
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function prevLine(iter) { |
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if (iter.line <= iter.min) return; |
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iter.text = iter.cm.getLine(--iter.line); |
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iter.ch = iter.text.length; |
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return true; |
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} |
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|
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function toTagEnd(iter) { |
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for (;;) { |
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var gt = iter.text.indexOf(">", iter.ch); |
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if (gt == -1) { if (nextLine(iter)) continue; else return; } |
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if (!tagAt(iter, gt + 1)) { iter.ch = gt + 1; continue; } |
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var lastSlash = iter.text.lastIndexOf("/", gt); |
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var selfClose = lastSlash > -1 && !/\S/.test(iter.text.slice(lastSlash + 1, gt)); |
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iter.ch = gt + 1; |
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return selfClose ? "selfClose" : "regular"; |
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} |
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} |
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function toTagStart(iter) { |
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for (;;) { |
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var lt = iter.ch ? iter.text.lastIndexOf("<", iter.ch - 1) : -1; |
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if (lt == -1) { if (prevLine(iter)) continue; else return; } |
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if (!tagAt(iter, lt + 1)) { iter.ch = lt; continue; } |
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xmlTagStart.lastIndex = lt; |
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iter.ch = lt; |
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var match = xmlTagStart.exec(iter.text); |
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if (match && match.index == lt) return match; |
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} |
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} |
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|
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function toNextTag(iter) { |
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for (;;) { |
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xmlTagStart.lastIndex = iter.ch; |
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var found = xmlTagStart.exec(iter.text); |
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if (!found) { if (nextLine(iter)) continue; else return; } |
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if (!tagAt(iter, found.index + 1)) { iter.ch = found.index + 1; continue; } |
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iter.ch = found.index + found[0].length; |
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return found; |
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} |
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} |
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function toPrevTag(iter) { |
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for (;;) { |
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var gt = iter.ch ? iter.text.lastIndexOf(">", iter.ch - 1) : -1; |
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if (gt == -1) { if (prevLine(iter)) continue; else return; } |
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if (!tagAt(iter, gt + 1)) { iter.ch = gt; continue; } |
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var lastSlash = iter.text.lastIndexOf("/", gt); |
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var selfClose = lastSlash > -1 && !/\S/.test(iter.text.slice(lastSlash + 1, gt)); |
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iter.ch = gt + 1; |
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return selfClose ? "selfClose" : "regular"; |
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} |
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} |
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|
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function findMatchingClose(iter, tag) { |
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var stack = []; |
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for (;;) { |
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var next = toNextTag(iter), end, startLine = iter.line, startCh = iter.ch - (next ? next[0].length : 0); |
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if (!next || !(end = toTagEnd(iter))) 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 (i < 0 && (!tag || tag == next[2])) return { |
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tag: next[2], |
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from: Pos(startLine, startCh), |
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to: Pos(iter.line, iter.ch) |
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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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function findMatchingOpen(iter, tag) { |
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var stack = []; |
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for (;;) { |
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var prev = toPrevTag(iter); |
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if (!prev) return; |
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if (prev == "selfClose") { toTagStart(iter); continue; } |
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var endLine = iter.line, endCh = iter.ch; |
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var start = toTagStart(iter); |
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if (!start) return; |
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if (start[1]) { // closing tag |
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stack.push(start[2]); |
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} else { // opening tag |
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for (var i = stack.length - 1; i >= 0; --i) if (stack[i] == start[2]) { |
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stack.length = i; |
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break; |
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} |
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if (i < 0 && (!tag || tag == start[2])) return { |
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tag: start[2], |
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from: Pos(iter.line, iter.ch), |
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to: Pos(endLine, endCh) |
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}; |
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} |
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} |
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} |
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|
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CodeMirror.registerHelper("fold", "xml", function(cm, start) { |
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var iter = new Iter(cm, start.line, 0); |
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for (;;) { |
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var openTag = toNextTag(iter), end; |
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if (!openTag || iter.line != start.line || !(end = toTagEnd(iter))) return; |
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if (!openTag[1] && end != "selfClose") { |
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var start = Pos(iter.line, iter.ch); |
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var close = findMatchingClose(iter, openTag[2]); |
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return close && {from: start, to: close.from}; |
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} |
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} |
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}); |
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CodeMirror.tagRangeFinder = CodeMirror.fold.xml; // deprecated |
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|
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CodeMirror.findMatchingTag = function(cm, pos, range) { |
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var iter = new Iter(cm, pos.line, pos.ch, range); |
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if (iter.text.indexOf(">") == -1 && iter.text.indexOf("<") == -1) return; |
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var end = toTagEnd(iter), to = end && Pos(iter.line, iter.ch); |
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var start = end && toTagStart(iter); |
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if (!end || end == "selfClose" || !start || cmp(iter, pos) > 0) return; |
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var here = {from: Pos(iter.line, iter.ch), to: to, tag: start[2]}; |
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|
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if (start[1]) { // closing tag |
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return {open: findMatchingOpen(iter, start[2]), close: here, at: "close"}; |
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} else { // opening tag |
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iter = new Iter(cm, to.line, to.ch, range); |
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return {open: here, close: findMatchingClose(iter, start[2]), at: "open"}; |
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} |
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}; |
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|
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CodeMirror.findEnclosingTag = function(cm, pos, range) { |
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var iter = new Iter(cm, pos.line, pos.ch, range); |
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for (;;) { |
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var open = findMatchingOpen(iter); |
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if (!open) break; |
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var forward = new Iter(cm, pos.line, pos.ch, range); |
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var close = findMatchingClose(forward, open.tag); |
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if (close) return {open: open, close: close}; |
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} |
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}; |
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})(); |
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