feat: support CJK & ANS spacing

2020-03-01 05:51:00 +08:00 · 2020-03-01 05:51:00 +08:00 · 20c70557b5
commit 20c70557b5
parent 25cfc2229a
12 changed files with 1028 additions and 49 deletions
--- a/add-ons/add-on.js
+++ b/add-ons/add-on.js
@ -0,0 +1,105 @@
+/**
+ * Heti add-on v 0.1.0
+ * Add right spacing between CJK & ANS characters
+ */
+
+import Finder  from 'findandreplacedomtext'
+
+// 正则表达式来自 pangu.js https://github.com/vinta/pangu.js
+const CJK = '\u2e80-\u2eff\u2f00-\u2fdf\u3040-\u309f\u30a0-\u30fa\u30fc-\u30ff\u3100-\u312f\u3200-\u32ff\u3400-\u4dbf\u4e00-\u9fff\uf900-\ufaff'
+const A = 'A-Za-z\u0370-\u03ff'
+const N = '0-9'
+const S = '`~!@#\\$%\\^&\\*\\(\\)-_=\\+\\[\\]{}\\\\\\|;:\'",<.>\\/\\?'
+const ANS = `${A}${N}${S}`
+const HETI_NON_CONTIGUOUS_ELEMENTS = {
+  // Block Elements
+  address:1, article:1, aside:1, blockquote:1, dd:1, div:1,
+  dl:1, fieldset:1, figcaption:1, figure:1, footer:1, form:1, h1:1, h2:1, h3:1,
+  h4:1, h5:1, h6:1, header:1, hgroup:1, hr:1, main:1, nav:1, noscript:1, ol:1,
+  output:1, p:1, pre:1, section:1, ul:1,
+  // Other misc. elements that are not part of continuous inline prose:
+  br:1, li: 1, summary: 1, dt:1, details:1, rp:1, rt:1, rtc:1,
+  // Media / Source elements:
+  script:1, style:1, img:1, video:1, audio:1, canvas:1, svg:1, map:1, object:1,
+  // Input elements
+  input:1, textarea:1, select:1, option:1, optgroup:1, button:1,
+  // Table related elements:
+  table:1, tbody:1, thead:1, th:1, tr:1, td:1, caption:1, col:1, tfoot:1, colgroup:1
+}
+const HETI_SKIPPED_ELEMENTS = {
+  br:1, hr:1,
+  // Media / Source elements:
+  script:1, style:1, img:1, video:1, audio:1, canvas:1, svg:1, map:1, object:1,
+  // Input elements:
+  input:1, textarea:1, select:1, option:1, optgroup: 1, button:1,
+  // Pre elements:
+  pre: 1, code: 1, sup: 1, sub: 1,
+  // Heti elements
+  'heti-spacing': 1,
+}
+const HETI_SKIPPED_CLASS = 'heti-skip'
+const hasOwn = {}.hasOwnProperty
+
+class Heti {
+  constructor(rootSelector) {
+    this.rootSelector = rootSelector || '.heti'
+    this.REG_FULL = new RegExp(`(?<=[${CJK}])( *[${ANS}]+(?: +[${ANS}]+)* *)(?=[${CJK}])`, 'g')
+    this.REG_START = new RegExp(`([${ANS}]+(?: +[${ANS}]+)* *)(?=[${CJK}])`, 'g')
+    this.REG_END = new RegExp(`(?<=[${CJK}])( *[${ANS}]+(?: +[${ANS}]+)*)`, 'g')
+    this.funcForceContext = function forceContext(el) {
+      return hasOwn.call(HETI_NON_CONTIGUOUS_ELEMENTS, el.nodeName.toLowerCase())
+    }
+    this.funcFilterElements = function filterElements(el) {
+      return (
+        !(el.classList && el.classList.contains(HETI_SKIPPED_CLASS)) &&
+        !hasOwn.call(HETI_SKIPPED_ELEMENTS, el.nodeName.toLowerCase())
+      )
+    }
+  }
+
+  spacingElements(elmList) {
+    for (let $$root of elmList) {
+      this.spacingElement($$root)
+    }
+  }
+
+  spacingElement($$elm) {
+    const commonConfig = {
+      forceContext: this.funcForceContext,
+      filterElements: this.funcFilterElements
+    }
+    const getWrapper = function (classList, text) {
+      const $$r = document.createElement('heti-spacing')
+      $$r.className = classList
+      $$r.textContent = text.trim()
+      return $$r
+    }
+
+    Finder($$elm, Object.assign(commonConfig, {
+      find: this.REG_FULL,
+      replace: portion => getWrapper('heti-spacing-start heti-spacing-end', portion.text)
+    }))
+
+    Finder($$elm, Object.assign(commonConfig, {
+      find: this.REG_START,
+      replace: portion => getWrapper('heti-spacing-start', portion.text)
+    }))
+
+    Finder($$elm, Object.assign(commonConfig, {
+      find: this.REG_END,
+      replace: portion => getWrapper('heti-spacing-end', portion.text)
+    }))
+  }
+
+  autoSpacing() {
+    document.addEventListener('DOMContentLoaded', () => {
+      const $$rootList = document.querySelectorAll(this.rootSelector)
+
+      for (let $$root of $$rootList) {
+        this.spacingElement($$root)
+      }
+    })
+  }
+}
+
+export default Heti