3 files changed, 177 insertions, 0 deletions
diff --git a/node_modules/entities/lib/decode.js b/node_modules/entities/lib/decode.js
new file mode 100644
index 00000000..1ca99ad6
--- /dev/null
+++ b/node_modules/entities/lib/decode.js
@@ -0,0 +1,70 @@
+var entityMap = require("../maps/entities.json"),
+    legacyMap = require("../maps/legacy.json"),
+    xmlMap = require("../maps/xml.json"),
+    decodeCodePoint = require("./decode_codepoint.js");
+
+var decodeXMLStrict = getStrictDecoder(xmlMap),
+    decodeHTMLStrict = getStrictDecoder(entityMap);
+
+function getStrictDecoder(map) {
+    var keys = Object.keys(map).join("|"),
+        replace = getReplacer(map);
+
+    keys += "|#[xX][\\da-fA-F]+|#\\d+";
+
+    var re = new RegExp("&(?:" + keys + ");", "g");
+
+    return function(str) {
+        return String(str).replace(re, replace);
+    };
+}
+
+var decodeHTML = (function() {
+    var legacy = Object.keys(legacyMap).sort(sorter);
+
+    var keys = Object.keys(entityMap).sort(sorter);
+
+    for (var i = 0, j = 0; i < keys.length; i++) {
+        if (legacy[j] === keys[i]) {
+            keys[i] += ";?";
+            j++;
+        } else {
+            keys[i] += ";";
+        }
+    }
+
+    var re = new RegExp("&(?:" + keys.join("|") + "|#[xX][\\da-fA-F]+;?|#\\d+;?)", "g"),
+        replace = getReplacer(entityMap);
+
+    function replacer(str) {
+        if (str.substr(-1) !== ";") str += ";";
+        return replace(str);
+    }
+
+    //TODO consider creating a merged map
+    return function(str) {
+        return String(str).replace(re, replacer);
+    };
+})();
+
+function sorter(a, b) {
+    return a < b ? 1 : -1;
+}
+
+function getReplacer(map) {
+    return function replace(str) {
+        if (str.charAt(1) === "#") {
+            if (str.charAt(2) === "X" || str.charAt(2) === "x") {
+                return decodeCodePoint(parseInt(str.substr(3), 16));
+            }
+            return decodeCodePoint(parseInt(str.substr(2), 10));
+        }
+        return map[str.slice(1, -1)];
+    };
+}
+
+module.exports = {
+    XML: decodeXMLStrict,
+    HTML: decodeHTML,
+    HTMLStrict: decodeHTMLStrict
+};
diff --git a/node_modules/entities/lib/decode_codepoint.js b/node_modules/entities/lib/decode_codepoint.js
new file mode 100644
index 00000000..2eadbe4e
--- /dev/null
+++ b/node_modules/entities/lib/decode_codepoint.js
@@ -0,0 +1,25 @@
+var decodeMap = require("../maps/decode.json");
+
+module.exports = decodeCodePoint;
+
+// modified version of https://github.com/mathiasbynens/he/blob/master/src/he.js#L94-L119
+function decodeCodePoint(codePoint) {
+    if ((codePoint >= 0xd800 && codePoint <= 0xdfff) || codePoint > 0x10ffff) {
+        return "\uFFFD";
+    }
+
+    if (codePoint in decodeMap) {
+        codePoint = decodeMap[codePoint];
+    }
+
+    var output = "";
+
+    if (codePoint > 0xffff) {
+        codePoint -= 0x10000;
+        output += String.fromCharCode(((codePoint >>> 10) & 0x3ff) | 0xd800);
+        codePoint = 0xdc00 | (codePoint & 0x3ff);
+    }
+
+    output += String.fromCharCode(codePoint);
+    return output;
+}
diff --git a/node_modules/entities/lib/encode.js b/node_modules/entities/lib/encode.js
new file mode 100644
index 00000000..791c405c
--- /dev/null
+++ b/node_modules/entities/lib/encode.js
@@ -0,0 +1,82 @@
+var inverseXML = getInverseObj(require("../maps/xml.json")),
+    xmlReplacer = getInverseReplacer(inverseXML);
+
+exports.XML = getInverse(inverseXML, xmlReplacer);
+
+var inverseHTML = getInverseObj(require("../maps/entities.json")),
+    htmlReplacer = getInverseReplacer(inverseHTML);
+
+exports.HTML = getInverse(inverseHTML, htmlReplacer);
+
+function getInverseObj(obj) {
+    return Object.keys(obj)
+        .sort()
+        .reduce(function(inverse, name) {
+            inverse[obj[name]] = "&" + name + ";";
+            return inverse;
+        }, {});
+}
+
+function getInverseReplacer(inverse) {
+    var single = [],
+        multiple = [];
+
+    Object.keys(inverse).forEach(function(k) {
+        if (k.length === 1) {
+            single.push("\\" + k);
+        } else {
+            multiple.push(k);
+        }
+    });
+
+    //TODO add ranges
+    multiple.unshift("[" + single.join("") + "]");
+
+    return new RegExp(multiple.join("|"), "g");
+}
+
+var re_nonASCII = /[^\0-\x7F]/g,
+    re_astralSymbols = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g;
+
+function singleCharReplacer(c) {
+    return (
+        "&#x" +
+        c
+            .charCodeAt(0)
+            .toString(16)
+            .toUpperCase() +
+        ";"
+    );
+}
+
+function astralReplacer(c) {
+    // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+    var high = c.charCodeAt(0);
+    var low = c.charCodeAt(1);
+    var codePoint = (high - 0xd800) * 0x400 + low - 0xdc00 + 0x10000;
+    return "&#x" + codePoint.toString(16).toUpperCase() + ";";
+}
+
+function getInverse(inverse, re) {
+    function func(name) {
+        return inverse[name];
+    }
+
+    return function(data) {
+        return data
+            .replace(re, func)
+            .replace(re_astralSymbols, astralReplacer)
+            .replace(re_nonASCII, singleCharReplacer);
+    };
+}
+
+var re_xmlChars = getInverseReplacer(inverseXML);
+
+function escapeXML(data) {
+    return data
+        .replace(re_xmlChars, singleCharReplacer)
+        .replace(re_astralSymbols, astralReplacer)
+        .replace(re_nonASCII, singleCharReplacer);
+}
+
+exports.escape = escapeXML;