feat(原生支持字数统计和阅读时长): 统一使用WordCount组件

(cherry picked from commit d8180e1a783ad50c501b741adc72f2747896bdc1)

lib/plugins/wordCount.js

@@ -0,0 +1,27 @@
+/**
+ * 更新字数统计和阅读时间
+ */
+export function countWords(pageContentText) {
+  const wordCount = fnGetCpmisWords(pageContentText)
+  // 阅读速度 300-500每分钟
+  const readTime = Math.floor(wordCount / 400) + 1
+  return { wordCount, readTime }
+}
+
+// 用word方式计算正文字数
+function fnGetCpmisWords(str) {
+  if (!str) {
+    return 0
+  }
+  let sLen = 0
+  try {
+    // eslint-disable-next-line no-irregular-whitespace
+    str = str.replace(/(\r\n+|\s+|　+)/g, '龘')
+    // eslint-disable-next-line no-control-regex
+    str = str.replace(/[\x00-\xff]/g, 'm')
+    str = str.replace(/m+/g, '*')
+    str = str.replace(/龘+/g, '')
+    sLen = str.length
+  } catch (e) {}
+  return sLen
+}