use maintained theme

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

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+/*!
+ * Lunr languages, `Chinese` language
+ * https://github.com/MihaiValentin/lunr-languages
+ *
+ * Copyright 2019, Felix Lian (repairearth)
+ * http://www.mozilla.org/MPL/
+ */
+/*!
+ * based on
+ * Snowball zhvaScript 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."
+      );
+    }
+
+    /*
+    Chinese tokenization is trickier, since it does not
+    take into account spaces.
+    Since the tokenization function is represented different
+    internally for each of the Lunr versions, this had to be done
+    in order to try to try to pick the best way of doing this based
+    on the Lunr version
+     */
+    var isLunr2 = lunr.version[0] == "2";
+
+    /* register specific locale function */
+    lunr.zh = function () {
+      this.pipeline.reset();
+      this.pipeline.add(
+        lunr.zh.trimmer,
+        lunr.zh.stopWordFilter,
+        lunr.zh.stemmer
+      );
+
+      // change the tokenizer for Chinese one
+      if (isLunr2) {
+        // for lunr version 2.0.0
+        this.tokenizer = lunr.zh.tokenizer;
+      } else {
+        if (lunr.tokenizer) {
+          // for lunr version 0.6.0
+          lunr.tokenizer = lunr.zh.tokenizer;
+        }
+        if (this.tokenizerFn) {
+          // for lunr version 0.7.0 -> 1.0.0
+          this.tokenizerFn = lunr.zh.tokenizer;
+        }
+      }
+    };
+
+    lunr.zh.tokenizer = function (obj) {
+      if (!arguments.length || obj == null || obj == undefined) return [];
+      if (Array.isArray(obj))
+        return obj.map(function (t) {
+          return isLunr2 ? new lunr.Token(t.toLowerCase()) : t.toLowerCase();
+        });
+
+      var str = obj.toString().trim().toLowerCase();
+      var tokens = [];
+
+      lunr.segmentit &&
+        lunr.segmentit.doSegment(str).forEach(function (seg) {
+          tokens = tokens.concat(seg.w.split(" "));
+        });
+
+      tokens = tokens.filter(function (token) {
+        return !!token;
+      });
+
+      var fromIndex = 0;
+
+      return tokens.map(function (token, index) {
+        if (isLunr2) {
+          var start = str.indexOf(token, fromIndex);
+
+          var tokenMetadata = {};
+          tokenMetadata["position"] = [start, token.length];
+          tokenMetadata["index"] = index;
+
+          fromIndex = start;
+
+          return new lunr.Token(token, tokenMetadata);
+        } else {
+          return token;
+        }
+      });
+    };
+
+    /* lunr trimmer function */
+    lunr.zh.wordCharacters = "\\w\u4e00-\u9fa5";
+    lunr.zh.trimmer = lunr.trimmerSupport.generateTrimmer(
+      lunr.zh.wordCharacters
+    );
+    lunr.Pipeline.registerFunction(lunr.zh.trimmer, "trimmer-zh");
+
+    /* lunr stemmer function */
+    lunr.zh.stemmer = (function () {
+      /* TODO Chinese stemmer  */
+      return function (word) {
+        return word;
+      };
+    })();
+    lunr.Pipeline.registerFunction(lunr.zh.stemmer, "stemmer-zh");
+
+    /* lunr stop word filter. see https://www.ranks.nl/stopwords/chinese-stopwords */
+    lunr.zh.stopWordFilter = lunr.generateStopWordFilter(
+      "的 一 不 在 人 有 是 为 以 于 上 他 而 后 之 来 及 了 因 下 可 到 由 这 与 也 此 但 并 个 其 已 无 小 我 们 起 最 再 今 去 好 只 又 或 很 亦 某 把 那 你 乃 它 吧 被 比 别 趁 当 从 到 得 打 凡 儿 尔 该 各 给 跟 和 何 还 即 几 既 看 据 距 靠 啦 了 另 么 每 们 嘛 拿 哪 那 您 凭 且 却 让 仍 啥 如 若 使 谁 虽 随 同 所 她 哇 嗡 往 哪 些 向 沿 哟 用 于 咱 则 怎 曾 至 致 着 诸 自".split(
+        " "
+      )
+    );
+    lunr.Pipeline.registerFunction(lunr.zh.stopWordFilter, "stopWordFilter-zh");
+  };
+});