支持了从外来源加载 markdown 内容和 md extra 特性，版本号更新为 0.2-dev

- 将版本号修改为 0.2-dev
- 添加了 <ref source="xx"> 标签声明外源引用文本
  - 添加 marked.js 用于处理外源 markdown 资料
  - 添加了自定义的 `$(xx)` 用于在 md 中声明外源资料
  - 添加了配套的 ref.css 和 ref.js
  - 同时更新了 pjax 支持
- 将 Parsedown 更新为 ParsedownExtra

assets/gitbook-fix.js

@@ -163,6 +163,8 @@ function updatePage (bookId, pageId = "") {
 			// history
 			window.history.pushState(document.documentElement.innerHTML, document.title, url);
 			pageContainer.classList.remove("loading");
+			// post-process
+			updateRef();
 			
 		}
 	}

assets/ref.css

@@ -0,0 +1,6 @@
+ref {
+	display: block;
+	border: 2px solid var(--color-graystyle);
+	padding: 1em 2em;
+	margin: 1.7em 0
+}

assets/ref.js

@@ -0,0 +1,15 @@
+function updateRef () {
+	for (let node of document.getElementsByTagName("ref")) {
+		node.innerHTML = "...";
+		const request = new XMLHttpRequest();
+		request.open("GET", node.getAttribute("source"), true);
+		request.onreadystatechange = function () {
+			if (request.readyState === 4 && request.status === 200) {
+				node.innerHTML = marked(request.responseText);
+			} else if (request.readyState === 4) {
+				node.innerHTML = "ERROR "+ request.status;
+			}
+		}
+		request.send();
+	}
+} updateRef();

constant.php

@@ -2,7 +2,7 @@
 
 const APP_NAME = "ph-Bookshelf";
 
-const VERSION = "0.1-dev";
+const VERSION = "0.2-dev";
 const CHANNEL = "workshop-origin";
 const BRANCH = "master";
 

index.php

@@ -3,12 +3,12 @@
 
 require_once "./src/Data/SiteMeta.php";
 require_once "./src/Data/PageMeta.php";
-require_once "./lib/Parsedown/Parsedown.php";
+require_once "./src/Utils/ParsedownExtend.php";
 require_once "./src/Utils/PageParse.php";
 require_once "./src/Utils/RequestNotExistException.php";
 require_once "./constant.php";
 
-$parser = new Parsedown();
+$parser = new ParsedownExtend();
 
 $parser->setMarkupEscaped(false);
 $parser->setSafeMode(false);

src/Data/SiteMeta.php

@@ -31,6 +31,7 @@ class SiteMeta {
 			"/assets/gitbook/style.css",
 			"/assets/gitbook/gitbook-plugin-fontsettings/website.css",
 			"/assets/gitbook-fix.css",
+			"/assets/ref.css",
 		);
 	}
 	
@@ -38,6 +39,8 @@ class SiteMeta {
 		return array(
 			"/assets/gitbook/gitbook.js",
 			"/assets/gitbook-fix.js",
+			"https://cdn.jsdelivr.net/npm/marked/marked.min.js",
+			"/assets/ref.js",
 		);
 	}
 	

src/Utils/ParsedownExtend.php

@@ -0,0 +1,32 @@
+<?php
+
+require_once "./lib/Parsedown/Parsedown.php";
+require_once "./lib/Parsedown/ParsedownExtra.php";
+
+class ParsedownExtend extends ParsedownExtra {
+	
+	function __construct() {
+		
+		$this->InlineTypes['$'][] = 'RefMarkdown';
+		
+		$this->inlineMarkerList .= '$';
+		
+	}
+	
+	protected function inlineRefMarkdown ($excerpt) {
+		if (preg_match('/^\$\(([\S ]*?)\)/', $excerpt['text'], $matches)) {
+			return array(
+				'extent' => strlen($matches[0]),
+				'element' => array(
+					'name' => 'ref',
+					'text' => '',
+					'attributes' => array(
+						'source' => $matches[1],
+					),
+				),
+			
+			);
+		}
+	}
+	
+}