From 8f43bdc2c16e892a3b2e7044d1444a0a0f22d620 Mon Sep 17 00:00:00 2001
From: Eyre_S <Sukazyo@outlook.com>
Date: Wed, 5 May 2021 14:57:15 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E4=BA=86=E4=B8=80=E4=B8=AA?=
 =?UTF-8?q?=E7=AE=80=E5=8D=95=E7=9A=84=E8=B5=84=E6=BA=90=E6=96=87=E4=BB=B6?=
 =?UTF-8?q?=E8=BE=93=E5=87=BA=E5=8A=9F=E8=83=BD=EF=BC=8C=E5=AE=9E=E7=8E=B0?=
 =?UTF-8?q?=E4=BA=86=E6=A0=87=E9=A2=98=E8=B7=B3=E8=BD=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- 现在无法被解析为页面的请求会尝试从 /data/%assets/ 中寻找资源文件
- 给标题解析添加了和内容相同的 id 生成，从而可以使用跳转了
---
 index.php                              | 65 +++++++++++++------
 lib/Parsedown/Parsedown.php            | 15 ++++-
 src/Utils/PageParse.php                | 87 ++++++++++++++++++++++++++
 src/Utils/RequestNotExistException.php | 10 +++
 4 files changed, 156 insertions(+), 21 deletions(-)
 create mode 100644 src/Utils/PageParse.php
 create mode 100644 src/Utils/RequestNotExistException.php

diff --git a/index.php b/index.php
index d808540..c81dd4a 100644
--- a/index.php
+++ b/index.php
@@ -4,6 +4,8 @@
 require_once "./src/Data/SiteMeta.php";
 require_once "./src/Data/PageMeta.php";
 require_once "./lib/Parsedown/Parsedown.php";
+require_once "./src/Utils/PageParse.php";
+require_once "./src/Utils/RequestNotExistException.php";
 
 $parser = new Parsedown();
 
@@ -15,29 +17,52 @@ try {
 	SiteMeta::load();
 	
 	// 格式化所给链接，并将链接转化为路径字符串数组
-	$tmp = $_GET['p'];
-	if (strlen($tmp) > 0 && $tmp[strlen($tmp) - 1] === '/')
-		$tmp = substr($tmp, 0, -1);
-	$uri = explode("/", $tmp, 2);
+	$req = $_GET['p'];
+	if (strlen($req) > 0 && $req[strlen($req) - 1] === '/')
+		$tmp = substr($req, 0, -1);
+	$uri = explode("/", $req, 2);
 	
-	if (sizeof($uri) > 0 && $uri[0] != null) {
-		// 非主页面，判定当前定义的 book
-		$tmp = SiteMeta::getBookshelf()->getBook($uri[0]);
-		if ($tmp == null) throw new Exception("Book required \"$uri[0]\" not found!");
-		PageMeta::$book = $tmp->getContentedNode();
-		// 判定当前页面
-		if (sizeof($uri) > 1 && $uri[1] != null) {
-			$tmp = PageMeta::$book->getPage($uri[1]);
-			if ($tmp == null) throw new Exception("Page required \"$uri[1]\" not found on book \"$uri[0]\"!");
-			PageMeta::$page = $tmp;
+	try {
+		
+		// 寻找页面
+		
+		if (sizeof($uri) > 0 && $uri[0] != null) {
+			// 非主页面，判定当前定义的 book
+			$tmp = SiteMeta::getBookshelf()->getBook($uri[0]);
+			if ($tmp == null) throw new RequestNotExistException("Book required \"$uri[0]\" not found!");
+			PageMeta::$book = $tmp->getContentedNode();
+			// 判定当前页面
+			if (sizeof($uri) > 1 && $uri[1] != null) {
+				$tmp = PageMeta::$book->getPage($uri[1]);
+				if ($tmp == null) throw new RequestNotExistException("Page required \"$uri[1]\" not found on book \"$uri[0]\"!");
+				PageMeta::$page = $tmp;
+			} else {
+				PageMeta::$page = PageMeta::$book->getChilds()->getChilds()[0];
+			}
 		} else {
+			// 主页面
+			PageMeta::$book = SiteMeta::getBookshelf()->getRootBook();
 			PageMeta::$page = PageMeta::$book->getChilds()->getChilds()[0];
+			PageMeta::$isMainPage = true;
 		}
-	} else {
-		// 主页面
-		PageMeta::$book = SiteMeta::getBookshelf()->getRootBook();
-		PageMeta::$page = PageMeta::$book->getChilds()->getChilds()[0];
-		PageMeta::$isMainPage = true;
+		
+	} catch (RequestNotExistException $e) {
+		
+		// 页面寻找失败，寻找资源文件
+		
+		if (!is_file($resLoc = "./data/%assets/$req")) { // 全局文件夹的资源文件
+//			if (!is_file($resLoc = sprintf("./data/%s/%s", PageParse::genPathFromUriArray($uri), $req))) { // 以当前页面为基准位置的资源文件
+//				if (!is_file($resLoc = sprintf("./data/%s/%s", PageParse::genPathFromUriArray(array_slice($uri, 0, -1)), $req))) { // 以当前页面为基准位置的资源文件(fallback版)
+//					if (!is_file($resLoc = sprintf("./data/%s/%s", PageMeta::$book->getId(), $req))) { // 以当前书籍为基准位置的资源文件
+//						if (!is_file($resLoc = "./data/$req")) { // 全局的资源文件
+			throw $e;
+//						}
+//					}
+//				}
+//			}
+		}
+		PageParse::outputBinaryFile($resLoc);
+		
 	}
 	
 	require "./template/header.php";
@@ -90,7 +115,7 @@ try {
 					<div id="book-search-results">
 						<div class="search-noresults">
 							<section class="normal markdown-section">
-								<h1 id="workshop-services"><?= PageMeta::$page->getName() ?></h1>
+								<h1 id="<?= PageMeta::$page->getId() ?>"><?= PageMeta::$page->getName() ?></h1>
 								<?= $parser->text(PageMeta::$page->getMarkdownContent()) ?>
 							</section>
 						</div>
diff --git a/lib/Parsedown/Parsedown.php b/lib/Parsedown/Parsedown.php
index bd34560..0ffd0ac 100644
--- a/lib/Parsedown/Parsedown.php
+++ b/lib/Parsedown/Parsedown.php
@@ -561,7 +561,20 @@ class Parsedown
 					'function' => 'lineElements',
 					'argument' => $text,
 					'destination' => 'elements',
-				)
+				),
+				/**
+				 * Custom Start
+				 *
+				 * 生成标题的跳转用id
+				 *
+				 * @author Sukazyo
+				 */
+				'attributes' => array(
+					'id' => $text,
+				),
+				/**
+				 * Custom End
+				 */
 			),
 		);
 		
diff --git a/src/Utils/PageParse.php b/src/Utils/PageParse.php
new file mode 100644
index 0000000..03dbf3f
--- /dev/null
+++ b/src/Utils/PageParse.php
@@ -0,0 +1,87 @@
+<?php
+
+require_once "./src/Utils/StringUtils.php";
+
+class PageParse {
+	
+	/**
+	 * 按照原样输出资源文件
+	 *
+	 * @link https://segmentfault.com/a/1190000010912097
+	 *
+	 * @return bool 是否成功输出文件
+	 */
+	public static function outputBinaryFile (string $filePath): bool {
+		
+		// 获取文件名和文件后缀名
+		$fileInfo = pathinfo($filePath);
+		$filename = $fileInfo['basename'];
+		$fileExtension = $fileInfo['extension'];
+		// 将utf8编码转换成gbk编码，否则，中文名称的文件无法打开
+		//		$filePath = iconv('UTF-8', 'gbk', $filePath);
+		// 检查文件是否可读
+		if (!is_file($filePath) || !is_readable($filePath)) {
+			exit("File Can't Read!");
+		}
+		// 判定文件类型
+		$fileMime = mime_content_type($filePath);
+		$isText = false;
+		if ($fileMime == "text/plain") {
+			$isText = true;
+			switch ($fileExtension) {
+				case "css":
+					$fileMime = "text/css";
+					break;
+				case "js":
+					$fileMime = "application/javascript";
+					break;
+				default:
+			}
+		}
+		// 文件类型是二进制流。设置为utf8编码（支持中文文件名称）
+		header('Content-type:'.$fileMime.'; charset=utf-8');
+		header("Access-Control-Allow-Origin: * ");
+		if (isset($_GET['download'])) {
+			// 触发浏览器文件下载功能
+			header('Content-Disposition:attachment;filename="'.urlencode($filename).'"');
+		}
+		if ($isText) {
+			echo file_get_contents($filePath);
+		} else {
+			// 二进制文件数据头
+			header("Accept-Ranges: bytes");
+			header("Content-Length: ".filesize($filePath));
+			// 以只读方式打开文件，并强制使用二进制模式
+			$fileHandle = fopen($filePath, "rb");
+			if ($fileHandle === false) {
+				exit("read false");
+			}
+			// 循环读取文件内容，并输出
+			while (!feof($fileHandle)) {
+				// 从文件指针 handle 读取最多 length 个字节（每次输出10k）
+				echo fread($fileHandle, 10240);
+			}
+			// 关闭文件流
+			fclose($fileHandle);
+		}
+		return true;
+	}
+	
+	/**
+	 * 根据链接数组生成对应的链接/路径
+	 *
+	 * eg.
+	 * ["a2d", "WAE42WR6", "39272833"] => "a2d/WAE42WR6/39272833"
+	 *
+	 * @param string[] $uri
+	 * @return string
+	 */
+	public static function genPathFromUriArray (array $uri): string {
+		$result = "";
+		foreach ($uri as $n) {
+			$result .= $n . "/";
+		}
+		return substr($result, 0, -1);
+	}
+	
+}
diff --git a/src/Utils/RequestNotExistException.php b/src/Utils/RequestNotExistException.php
new file mode 100644
index 0000000..3f16d0d
--- /dev/null
+++ b/src/Utils/RequestNotExistException.php
@@ -0,0 +1,10 @@
+<?php
+
+
+class RequestNotExistException extends Exception {
+	
+	public function __construct ($message = "", $code = 0, Throwable $previous = null) {
+		parent::__construct($message, $code, $previous);
+	}
+	
+}
\ No newline at end of file