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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, start) {
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(start.line);
var found = false;
var tag = null;
var pos = start.ch;
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 seem 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 = start.line + 1;
var foundGt = false;
var lastLine = cm.lineCount();
while (l < lastLine && !foundGt) {
var lt = cm.getLine(l);
gtPos = lt.indexOf(">");
if (-1 != gtPos) { // found a >
foundGt = true;
var slash = lt.lastIndexOf("/", gtPos);
if (-1 != slash && slash < gtPos) {
var str = lineText.substr(slash, gtPos - slash + 1);
if (!str.match( /\/\s*\>/ )) // yep, that's the end of empty tag
return;
}
}
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);
var endTag = "</" + tag + ">";
var depth = 1;
var l = start.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 {from: {line: start.line, ch: gtPos + 1},
to: {line: l, ch: match.index}};
}
}
l++;
}
return;
}
};
CodeMirror.braceRangeFinder = function(cm, start) {
var line = start.line, lineText = cm.getLine(line);
var at = lineText.length, startChar, tokenType;
for (;;) {
var found = lineText.lastIndexOf("{", at);
if (found < start.ch) break;
tokenType = cm.getTokenAt({line: line, ch: found}).type;
if (!/^(comment|string)/.test(tokenType)) { startChar = found; break; }
at = found - 1;
}
if (startChar == null || lineText.lastIndexOf("}") > startChar) return;
var count = 1, lastLine = cm.lineCount(), end, endCh;
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}).type == tokenType) {
if (pos == nextOpen) ++count;
else if (!--count) { end = i; endCh = pos; break outer; }
}
++pos;
}
}
if (end == null || end == line + 1) return;
return {from: {line: line, ch: startChar + 1},
to: {line: end, ch: endCh}};
};
CodeMirror.indentRangeFinder = function(cm, start) {
var tabSize = cm.getOption("tabSize"), firstLine = cm.getLine(start.line);
var myIndent = CodeMirror.countColumn(firstLine, null, tabSize);
for (var i = start.line + 1, end = cm.lineCount(); i < end; ++i) {
var curLine = cm.getLine(i);
if (CodeMirror.countColumn(curLine, null, tabSize) < myIndent)
return {from: {line: start.line, ch: firstLine.length},
to: {line: i, ch: curLine.length}};
}
};
CodeMirror.newFoldFunction = function(rangeFinder, widget) {
if (widget == null) widget = "\u2194";
if (typeof widget == "string") {
var text = document.createTextNode(widget);
widget = document.createElement("span");
widget.appendChild(text);
widget.className = "CodeMirror-foldmarker";
}
return function(cm, pos) {
if (typeof pos == "number") pos = {line: pos, ch: 0};
var range = rangeFinder(cm, pos);
if (!range) return;
var present = cm.findMarksAt(range.from), cleared = 0;
for (var i = 0; i < present.length; ++i) {
if (present[i].__isFold) {
++cleared;
present[i].clear();
}
}
if (cleared) return;
var myWidget = widget.cloneNode(true);
CodeMirror.on(myWidget, "mousedown", function() {myRange.clear();});
var myRange = cm.markText(range.from, range.to, {
replacedWith: myWidget,
clearOnEnter: true,
__isFold: true
});
};
};