first commit

build/node_modules/css-tree/lib/utils/names.js

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+'use strict';
+
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var keywords = Object.create(null);
+var properties = Object.create(null);
+var HYPHENMINUS = 45; // '-'.charCodeAt()
+
+function isCustomProperty(str, offset) {
+    return str.length - offset >= 2 &&
+           str.charCodeAt(offset) === HYPHENMINUS &&
+           str.charCodeAt(offset + 1) === HYPHENMINUS;
+}
+
+function getVendorPrefix(str, offset) {
+    if (str.charCodeAt(offset) === HYPHENMINUS) {
+        // vendor should contain at least one letter
+        var secondDashIndex = str.indexOf('-', offset + 2);
+
+        if (secondDashIndex !== -1) {
+            return str.substring(offset, secondDashIndex + 1);
+        }
+    }
+
+    return '';
+}
+
+function getKeywordInfo(keyword) {
+    if (hasOwnProperty.call(keywords, keyword)) {
+        return keywords[keyword];
+    }
+
+    var name = keyword.toLowerCase();
+
+    if (hasOwnProperty.call(keywords, name)) {
+        return keywords[keyword] = keywords[name];
+    }
+
+    var vendor = !isCustomProperty(name, 0) ? getVendorPrefix(name, 0) : '';
+
+    return keywords[keyword] = Object.freeze({
+        vendor: vendor,
+        prefix: vendor,
+        name: name.substr(vendor.length)
+    });
+}
+
+function getPropertyInfo(property) {
+    if (hasOwnProperty.call(properties, property)) {
+        return properties[property];
+    }
+
+    var name = property;
+    var hack = property[0];
+
+    if (hack === '/') {
+        hack = property[1] === '/' ? '//' : '/';
+    } else if (hack !== '_' &&
+               hack !== '*' &&
+               hack !== '$' &&
+               hack !== '#' &&
+               hack !== '+') {
+        hack = '';
+    }
+
+    var custom = isCustomProperty(name, hack.length);
+
+    if (!custom) {
+        name = name.toLowerCase();
+        if (hasOwnProperty.call(properties, name)) {
+            return properties[property] = properties[name];
+        }
+    }
+
+    var vendor = !custom ? getVendorPrefix(name, hack.length) : '';
+
+    return properties[property] = Object.freeze({
+        hack: hack,
+        vendor: vendor,
+        prefix: hack + vendor,
+        name: name.substr(hack.length + vendor.length),
+        custom: custom
+    });
+}
+
+module.exports = {
+    keyword: getKeywordInfo,
+    property: getPropertyInfo
+};