1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
2 // Distributed under an MIT license: http://codemirror.net/LICENSE
5 if (typeof exports == "object" && typeof module == "object") // CommonJS
6 mod(require("../../lib/codemirror"));
7 else if (typeof define == "function" && define.amd) // AMD
8 define(["../../lib/codemirror"], mod);
9 else // Plain browser env
11 })(function(CodeMirror) {
14 var Pos = CodeMirror.Pos;
15 function cmp(a, b) { return a.line - b.line || a.ch - b.ch; }
17 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";
18 var nameChar = nameStartChar + "\-\:\.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040";
19 var xmlTagStart = new RegExp("<(/?)([" + nameStartChar + "][" + nameChar + "]*)", "g");
21 function Iter(cm, line, ch, range) {
22 this.line = line; this.ch = ch;
23 this.cm = cm; this.text = cm.getLine(line);
24 this.min = range ? range.from : cm.firstLine();
25 this.max = range ? range.to - 1 : cm.lastLine();
28 function tagAt(iter, ch) {
29 var type = iter.cm.getTokenTypeAt(Pos(iter.line, ch));
30 return type && /\btag\b/.test(type);
33 function nextLine(iter) {
34 if (iter.line >= iter.max) return;
36 iter.text = iter.cm.getLine(++iter.line);
39 function prevLine(iter) {
40 if (iter.line <= iter.min) return;
41 iter.text = iter.cm.getLine(--iter.line);
42 iter.ch = iter.text.length;
46 function toTagEnd(iter) {
48 var gt = iter.text.indexOf(">", iter.ch);
49 if (gt == -1) { if (nextLine(iter)) continue; else return; }
50 if (!tagAt(iter, gt + 1)) { iter.ch = gt + 1; continue; }
51 var lastSlash = iter.text.lastIndexOf("/", gt);
52 var selfClose = lastSlash > -1 && !/\S/.test(iter.text.slice(lastSlash + 1, gt));
54 return selfClose ? "selfClose" : "regular";
57 function toTagStart(iter) {
59 var lt = iter.ch ? iter.text.lastIndexOf("<", iter.ch - 1) : -1;
60 if (lt == -1) { if (prevLine(iter)) continue; else return; }
61 if (!tagAt(iter, lt + 1)) { iter.ch = lt; continue; }
62 xmlTagStart.lastIndex = lt;
64 var match = xmlTagStart.exec(iter.text);
65 if (match && match.index == lt) return match;
69 function toNextTag(iter) {
71 xmlTagStart.lastIndex = iter.ch;
72 var found = xmlTagStart.exec(iter.text);
73 if (!found) { if (nextLine(iter)) continue; else return; }
74 if (!tagAt(iter, found.index + 1)) { iter.ch = found.index + 1; continue; }
75 iter.ch = found.index + found[0].length;
79 function toPrevTag(iter) {
81 var gt = iter.ch ? iter.text.lastIndexOf(">", iter.ch - 1) : -1;
82 if (gt == -1) { if (prevLine(iter)) continue; else return; }
83 if (!tagAt(iter, gt + 1)) { iter.ch = gt; continue; }
84 var lastSlash = iter.text.lastIndexOf("/", gt);
85 var selfClose = lastSlash > -1 && !/\S/.test(iter.text.slice(lastSlash + 1, gt));
87 return selfClose ? "selfClose" : "regular";
91 function findMatchingClose(iter, tag) {
94 var next = toNextTag(iter), end, startLine = iter.line, startCh = iter.ch - (next ? next[0].length : 0);
95 if (!next || !(end = toTagEnd(iter))) return;
96 if (end == "selfClose") continue;
97 if (next[1]) { // closing tag
98 for (var i = stack.length - 1; i >= 0; --i) if (stack[i] == next[2]) {
102 if (i < 0 && (!tag || tag == next[2])) return {
104 from: Pos(startLine, startCh),
105 to: Pos(iter.line, iter.ch)
107 } else { // opening tag
112 function findMatchingOpen(iter, tag) {
115 var prev = toPrevTag(iter);
117 if (prev == "selfClose") { toTagStart(iter); continue; }
118 var endLine = iter.line, endCh = iter.ch;
119 var start = toTagStart(iter);
121 if (start[1]) { // closing tag
122 stack.push(start[2]);
123 } else { // opening tag
124 for (var i = stack.length - 1; i >= 0; --i) if (stack[i] == start[2]) {
128 if (i < 0 && (!tag || tag == start[2])) return {
130 from: Pos(iter.line, iter.ch),
131 to: Pos(endLine, endCh)
137 CodeMirror.registerHelper("fold", "xml", function(cm, start) {
138 var iter = new Iter(cm, start.line, 0);
140 var openTag = toNextTag(iter), end;
141 if (!openTag || iter.line != start.line || !(end = toTagEnd(iter))) return;
142 if (!openTag[1] && end != "selfClose") {
143 var start = Pos(iter.line, iter.ch);
144 var close = findMatchingClose(iter, openTag[2]);
145 return close && {from: start, to: close.from};
149 CodeMirror.findMatchingTag = function(cm, pos, range) {
150 var iter = new Iter(cm, pos.line, pos.ch, range);
151 if (iter.text.indexOf(">") == -1 && iter.text.indexOf("<") == -1) return;
152 var end = toTagEnd(iter), to = end && Pos(iter.line, iter.ch);
153 var start = end && toTagStart(iter);
154 if (!end || !start || cmp(iter, pos) > 0) return;
155 var here = {from: Pos(iter.line, iter.ch), to: to, tag: start[2]};
156 if (end == "selfClose") return {open: here, close: null, at: "open"};
158 if (start[1]) { // closing tag
159 return {open: findMatchingOpen(iter, start[2]), close: here, at: "close"};
160 } else { // opening tag
161 iter = new Iter(cm, to.line, to.ch, range);
162 return {open: here, close: findMatchingClose(iter, start[2]), at: "open"};
166 CodeMirror.findEnclosingTag = function(cm, pos, range) {
167 var iter = new Iter(cm, pos.line, pos.ch, range);
169 var open = findMatchingOpen(iter);
171 var forward = new Iter(cm, pos.line, pos.ch, range);
172 var close = findMatchingClose(forward, open.tag);
173 if (close) return {open: open, close: close};
177 // Used by addon/edit/closetag.js
178 CodeMirror.scanForClosingTag = function(cm, pos, name, end) {
179 var iter = new Iter(cm, pos.line, pos.ch, end ? {from: 0, to: end} : null);
180 return findMatchingClose(iter, name);