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// the tagRangeFinder function is
// Copyright (C) 2011 by Daniel Glazman <daniel@glazman.org>
// released under the MIT license (../../LICENSE) like the rest of CodeMirror
CodeMirror.tagRangeFinder = function(cm, line) {
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";
var nameChar = nameStartChar + "\-\.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040";
var xmlNAMERegExp = new RegExp("^[" + nameStartChar + "][" + nameChar + "]*");
var lineText = cm.getLine(line);
var found = false;
var tag = null;
var pos = 0;
while (!found) {
pos = lineText.indexOf("<", pos);
if (-1 == pos) // no tag on line
return;
if (pos + 1 < lineText.length && lineText[pos + 1] == "/") { // closing tag
pos++;
continue;
}
// ok we weem to have a start tag
if (!lineText.substr(pos + 1).match(xmlNAMERegExp)) { // not a tag name...
pos++;
continue;
}
var gtPos = lineText.indexOf(">", pos + 1);
if (-1 == gtPos) { // end of start tag not in line
var l = line + 1;
var foundGt = false;
var lastLine = cm.lineCount();
while (l < lastLine && !foundGt) {
var lt = cm.getLine(l);
var gt = lt.indexOf(">");
if (-1 != gt) { // found a >
foundGt = true;
var slash = lt.lastIndexOf("/", gt);
if (-1 != slash && slash < gt) {
var str = lineText.substr(slash, gt - slash + 1);
if (!str.match( /\/\s*\>/ )) // yep, that's the end of empty tag
return l+1;
}
}
l++;
}
found = true;
}
else {
var slashPos = lineText.lastIndexOf("/", gtPos);
if (-1 == slashPos) { // cannot be empty tag
found = true;
// don't continue
}
else { // empty tag?
// check if really empty tag
var str = lineText.substr(slashPos, gtPos - slashPos + 1);
if (!str.match( /\/\s*\>/ )) { // finally not empty
found = true;
// don't continue
}
}
}
if (found) {
var subLine = lineText.substr(pos + 1);
tag = subLine.match(xmlNAMERegExp);
if (tag) {
// we have an element name, wooohooo !
tag = tag[0];
// do we have the close tag on same line ???
if (-1 != lineText.indexOf("</" + tag + ">", pos)) // yep
{
found = false;
}
// we don't, so we have a candidate...
}
else
found = false;
}
if (!found)
pos++;
}
if (found) {
var startTag = "(\\<\\/" + tag + "\\>)|(\\<" + tag + "\\>)|(\\<" + tag + "\\s)|(\\<" + tag + "$)";
var startTagRegExp = new RegExp(startTag, "g");
var endTag = "</" + tag + ">";
var depth = 1;
var l = line + 1;
var lastLine = cm.lineCount();
while (l < lastLine) {
lineText = cm.getLine(l);
var match = lineText.match(startTagRegExp);
if (match) {
for (var i = 0; i < match.length; i++) {
if (match[i] == endTag)
depth--;
else
depth++;
if (!depth)
return l+1;
}
}
l++;
}
return;
}
};
CodeMirror.braceRangeFinder = function(cm, line) {
var lineText = cm.getLine(line);
var startChar = lineText.lastIndexOf("{");
if (startChar < 0 || lineText.lastIndexOf("}") > startChar) return;
var tokenType = cm.getTokenAt({line: line, ch: startChar}).className;
var count = 1, lastLine = cm.lineCount(), end;
outer: for (var i = line + 1; i < lastLine; ++i) {
var text = cm.getLine(i), pos = 0;
for (;;) {
var nextOpen = text.indexOf("{", pos), nextClose = text.indexOf("}", pos);
if (nextOpen < 0) nextOpen = text.length;
if (nextClose < 0) nextClose = text.length;
pos = Math.min(nextOpen, nextClose);
if (pos == text.length) break;
if (cm.getTokenAt({line: i, ch: pos + 1}).className == tokenType) {
if (pos == nextOpen) ++count;
else if (!--count) { end = i; break outer; }
}
++pos;
}
}
if (end == null || end == line + 1) return;
return end;
};
CodeMirror.indentRangeFinder = function(cm, line) {
var tabSize = cm.getOption("tabSize");
var myIndent = cm.getLineHandle(line).indentation(tabSize), last;
for (var i = line + 1, end = cm.lineCount(); i < end; ++i) {
var handle = cm.getLineHandle(i);
if (!/^\s*$/.test(handle.text)) {
if (handle.indentation(tabSize) <= myIndent) break;
last = i;
}
}
if (!last) return null;
return last + 1;
};
CodeMirror.newFoldFunction = function(rangeFinder, markText) {
var folded = [];
if (markText == null) markText = '<div style="position: absolute; left: 2px; color:#600">▼</div>%N%';
function isFolded(cm, n) {
for (var i = 0; i < folded.length; ++i) {
var start = cm.lineInfo(folded[i].start);
if (!start) folded.splice(i--, 1);
else if (start.line == n) return {pos: i, region: folded[i]};
}
}
function expand(cm, region) {
cm.clearMarker(region.start);
for (var i = 0; i < region.hidden.length; ++i)
cm.showLine(region.hidden[i]);
}
return function(cm, line) {
cm.operation(function() {
var known = isFolded(cm, line);
if (known) {
folded.splice(known.pos, 1);
expand(cm, known.region);
} else {
var end = rangeFinder(cm, line);
if (end == null) return;
var hidden = [];
for (var i = line + 1; i < end; ++i) {
var handle = cm.hideLine(i);
if (handle) hidden.push(handle);
}
var first = cm.setMarker(line, markText);
var region = {start: first, hidden: hidden};
cm.onDeleteLine(first, function() { expand(cm, region); });
folded.push(region);
}
});
};
};
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