test: 文档汉字统计。

mybatis-flex-test/mybatis-flex-native-test/src/main/java/com/mybatisflex/test/ChineseCount.java

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+/*
+ *  Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package com.mybatisflex.test;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class ChineseCount {
+
+    private static long count = 0;
+
+    public static void main(String[] args) {
+        String rootPath = System.getProperty("user.dir") + "/docs";
+        File rootFile = new File(rootPath);
+        calculate(rootFile);
+        System.out.println("words count: " + count);
+    }
+
+
+    private static void calculate(File dir) {
+        File[] files = dir.listFiles(pathname -> !"node_modules".equals(pathname.getName()));
+        if (files != null) {
+            for (File file : files) {
+                if (file.isDirectory()) {
+                    calculate(file);
+                } else if (file.getName().endsWith(".md")) {
+                    System.out.println(file);
+                    count += chinese(readString(file));
+                }
+            }
+        }
+    }
+
+
+    private static String readString(File file) {
+        try (FileInputStream fis = new FileInputStream(file);
+             ByteArrayOutputStream bao = new ByteArrayOutputStream();) {
+            byte[] buffer = new byte[1024];
+            for (int len; (len = fis.read(buffer)) > 0; ) {
+                bao.write(buffer, 0, len);
+            }
+            return bao.toString("utf-8");
+        } catch (Exception e) {
+            return "";
+        }
+    }
+
+    static Pattern symbol = Pattern.compile("[\\u4e00-\\u9fa5]+");
+
+    private static int chinese(String string) {
+        int n = 0;
+        Matcher matcher = symbol.matcher(string);
+        while (matcher.find()) {
+            n += (matcher.end() - matcher.start());
+        }
+        return n;
+    }
+
+}