use maintained theme

themes/CodeIT/assets/lib/lunr/lunr.vi.js

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+/*!
+ * Lunr languages, `Vietnamese` language
+ * https://github.com/MihaiValentin/lunr-languages
+ *
+ * Copyright 2017, Keerati Thiwanruk
+ * http://www.mozilla.org/MPL/
+ */
+/*!
+ * based on
+ * Snowball JavaScript Library v0.3
+ * http://code.google.com/p/urim/
+ * http://snowball.tartarus.org/
+ *
+ * Copyright 2010, Oleg Mazko
+ * http://www.mozilla.org/MPL/
+ */
+
+/**
+ * export the module via AMD, CommonJS or as a browser global
+ * Export code from https://github.com/umdjs/umd/blob/master/returnExports.js
+ */
+
+(function (root, factory) {
+  if (typeof define === "function" && define.amd) {
+    // AMD. Register as an anonymous module.
+    define(factory);
+  } else if (typeof exports === "object") {
+    /**
+     * Node. Does not work with strict CommonJS, but
+     * only CommonJS-like environments that support module.exports,
+     * like Node.
+     */
+    module.exports = factory();
+  } else {
+    // Browser globals (root is window)
+    factory()(root.lunr);
+  }
+})(this, function () {
+  /**
+   * Just return a value to define the module export.
+   * This example returns an object, but the module
+   * can return a function as the exported value.
+   */
+  return function (lunr) {
+    /* throw error if lunr is not yet included */
+    if ("undefined" === typeof lunr) {
+      throw new Error(
+        "Lunr is not present. Please include / require Lunr before this script."
+      );
+    }
+
+    /* throw error if lunr stemmer support is not yet included */
+    if ("undefined" === typeof lunr.stemmerSupport) {
+      throw new Error(
+        "Lunr stemmer support is not present. Please include / require Lunr stemmer support before this script."
+      );
+    }
+
+    /* register specific locale function */
+    lunr.vi = function () {
+      this.pipeline.reset();
+      this.pipeline.add(lunr.vi.stopWordFilter, lunr.vi.trimmer);
+    };
+
+    /* lunr trimmer function */
+    lunr.vi.wordCharacters =
+      "[" +
+      "A-Za-z" +
+      "\u0300\u0350" + // dấu huyền
+      "\u0301\u0351" + // dấu sắc
+      "\u0309" + // dấu hỏi
+      "\u0323" + // dấu nặng
+      "\u0303\u0343" + // dấu ngã
+      "\u00C2\u00E2" + // Â
+      "\u00CA\u00EA" + // Ê
+      "\u00D4\u00F4" + // Ô
+      "\u0102-\u0103" + // Ă
+      "\u0110-\u0111" + // Đ
+      "\u01A0-\u01A1" + // Ơ
+      "\u01AF-\u01B0" + // Ư
+      "]";
+    lunr.vi.trimmer = lunr.trimmerSupport.generateTrimmer(
+      lunr.vi.wordCharacters
+    );
+    lunr.Pipeline.registerFunction(lunr.vi.trimmer, "trimmer-vi");
+    lunr.vi.stopWordFilter = lunr.generateStopWordFilter(
+      "là cái nhưng mà".split(" ")
+    );
+  };
+});