moving libs from data tables repo

Author: sh1mmer

css2xpath.js

@@ -0,0 +1,91 @@
+/** version 0.1 2009-04-30
+ * @author      Andrea Giammarchi
+ * @license     Mit Style License
+ * @project     http://code.google.com/p/css2xpath/
+ */
+
+/** css2xpath - generic CSS to XPath selector transformer
+ * @author      Andrea Giammarchi
+ * @license     Mit Style License
+ * @blog        http://webreflection.blogspot.com/
+ * @project     http://code.google.com/p/css2xpath/
+ * @version     0.1 - Converts correctly every SlickSpeed CSS selector [http://mootools.net/slickspeed/]
+ * @note        stand alone vice-versa subproject [http://code.google.com/p/css2xpath/]
+ * @info        http://www.w3.org/TR/CSS2/selector.html
+ * @credits     some tips from Aristotle Pagaltzis [http://plasmasturm.org/log/444/]
+ */
+css2xpath = (function(){
+    var re      = [
+            // add @ for attribs
+            /\[([^\]~\$\*\^\|\!]+)(=[^\]]+)?\]/g, "[@$1$2]",
+            // multiple queries
+            /\s*,\s*/g, "|",
+            // , + ~ >
+            /\s*(\+|~|>)\s*/g, "$1",
+            //* ~ + >
+            /([a-zA-Z0-9\_\-\*])~([a-zA-Z0-9\_\-\*])/g, "$1/following-sibling::$2",
+            /([a-zA-Z0-9\_\-\*])\+([a-zA-Z0-9\_\-\*])/g, "$1/following-sibling::*[1]/self::$2",
+            /([a-zA-Z0-9\_\-\*])>([a-zA-Z0-9\_\-\*])/g, "$1/$2",
+            // all unescaped stuff escaped
+            /\[([^=]+)=([^'|"][^\]]*)\]/g, "[$1='$2']",
+            // all descendant or self to //
+            /(^|[^a-zA-Z0-9\_\-\*])(#|\.)([a-zA-Z0-9\_\-]+)/g, "$1*$2$3",
+            /([\>\+\|\~\,\s])([a-zA-Z\*]+)/g, '$1//$2',
+            /\s+\/\//g, '//',
+            // :first-child
+            /([a-zA-Z0-9\_\-\*]+):first-child/g, "*[1]/self::$1",
+            // :last-child
+            /([a-zA-Z0-9\_\-\*]+):last-child/g, "$1[not(following-sibling::*)]",
+            // :only-child
+            /([a-zA-Z0-9\_\-\*]+):only-child/g, "*[last()=1]/self::$1",
+            // :empty
+            /([a-zA-Z0-9\_\-\*]+):empty/g, "$1[not(*) and not(normalize-space())]",
+            // :not
+            /([a-zA-Z0-9\_\-\*]+):not\(([^\)]*)\)/g, function(s, a, b){return a.concat("[not(", css2xpath(b).replace(/^[^\[]+\[([^\]]*)\].*$/g, "$1"), ")]");},
+            // :nth-child
+            /([a-zA-Z0-9\_\-\*]+):nth-child\(([^\)]*)\)/g, function(s, a, b){
+            switch(b){
+                case    "n":
+                    return a;
+                case    "even":
+                    return "*[position() mod 2=0 and position()>=0]/self::" + a;
+                case    "odd":
+                    return a + "[(count(preceding-sibling::*) + 1) mod 2=1]";
+                default:
+                    b = (b || "0").replace(/^([0-9]*)n.*?([0-9]*)$/, "$1+$2").split("+");
+                    b[1] = b[1] || "0";
+                    return "*[(position()-".concat(b[1], ") mod ", b[0], "=0 and position()>=", b[1], "]/self::", a);
+                }
+            },
+            // :contains(selectors)
+            /:contains\(([^\)]*)\)/g, function(s, a){
+            /*return "[contains(css:lower-case(string(.)),'" + a.toLowerCase() + "')]"; // it does not work in firefox 3*/
+                return "[contains(string(.),'" + a + "')]";
+            },
+            // |= attrib
+            /\[([a-zA-Z0-9\_\-]+)\|=([^\]]+)\]/g, "[@$1=$2 or starts-with(@$1,concat($2,'-'))]",
+            // *= attrib
+            /\[([a-zA-Z0-9\_\-]+)\*=([^\]]+)\]/g, "[contains(@$1,$2)]",
+            // ~= attrib
+            /\[([a-zA-Z0-9\_\-]+)~=([^\]]+)\]/g, "[contains(concat(' ',normalize-space(@$1),' '),concat(' ',$2,' '))]",
+            // ^= attrib
+            /\[([a-zA-Z0-9\_\-]+)\^=([^\]]+)\]/g, "[starts-with(@$1,$2)]",
+            // $= attrib
+            /\[([a-zA-Z0-9\_\-]+)\$=([^\]]+)\]/g, function(s, a, b){return "[substring(@".concat(a, ",string-length(@", a, ")-", b.length - 3, ")=", b, "]");},
+            // != attrib
+            /\[([a-zA-Z0-9\_\-]+)\!=([^\]]+)\]/g, "[not(@$1) or @$1!=$2]",
+            // ids and classes
+            /#([a-zA-Z0-9\_\-]+)/g, "[@id='$1']",
+            /\.([a-zA-Z0-9\_\-]+)/g, "[contains(concat(' ',normalize-space(@class),' '),' $1 ')]",
+            // normalize multiple filters
+            /\]\[([^\]]+)/g, " and ($1)"
+        ],
+        length  = re.length
+    ;
+    return function css2xpath(s){
+        var i = 0;
+        while(i < length)
+            s = s.replace(re[i++], re[i++]);
+        return "//" + s;
+    };
+})();