546 lines
22 KiB
PHP
546 lines
22 KiB
PHP
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<?php
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/**
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* 图书解析（v24 第 14 批 用户第 5 条）：上传一本书 → 读出元数据与正文。
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*
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* 用户原话：「可以上传图书，可以解析各种格式的图书」。
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*
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* 能力边界（**页面上必须如实写出来**，别让人以为传什么都能读）：
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* · **EPUB** —— 完整解析：元数据（书名/作者/出版社/语言/ISBN）+ 封面 + 按 spine 顺序
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* 拆出每一章的正文。这是电子书的事实标准，优先做好。
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* · **TXT** —— 解析：自动认编码（UTF-8 / GBK / BIG5），按"第X章"切章；
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* 切不出来就按 5000 字一段（否则一本 50 万字的书会变成一整页）。
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* · **PDF** —— **不提取正文**（服务端没有 PDF 解析扩展，硬写会错得很自信）。
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* 文件照存，阅读页用浏览器内嵌的 PDF 阅读器看（每家浏览器都有）。
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* · **MOBI / AZW3 / 其它** —— 不解析正文（亚马逊的私有格式，解析要一本书的成本）。
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* 文件照存、元数据照手填，仍然能进书架、能记笔记、能统计。
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*
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* ⚠️ 解析**只做纯文本**：不保留排版、图片、脚注。
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* 这是"能读"与"原样还原"之间的取舍 —— 家庭书架要的是"随时翻两页"，
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* 不是排版引擎（那是一个独立项目的量）。
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*
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* @return array{ok:bool,error?:string,meta:array,chapters:array,cover?:array}
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* cover = ['tmp'=>临时文件路径, 'mime'=>…]（有封面才有；调用方负责上传与删临时文件）
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*/
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declare(strict_types=1);
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namespace App;
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final class BookParser
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{
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/** 单章上限（字符）：超过就截断，防止一本巨书把库撑爆 */
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private const CHAPTER_MAX = 200000;
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/** 一本书最多解析多少章 */
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private const CHAPTER_LIMIT = 600;
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/**
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* @param string $path 临时文件路径
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* @param string $ext 扩展名（小写）
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* @param string $name 原始文件名（用来兜底猜书名/作者）
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*/
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public static function parse(string $path, string $ext, string $name = ''): array
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{
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if (!is_file($path)) {
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return ['ok' => false, 'error' => '文件读不到', 'meta' => [], 'chapters' => []];
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}
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$ext = strtolower($ext);
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if ($ext === '' && $name !== '') {
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$ext = strtolower((string)pathinfo($name, PATHINFO_EXTENSION));
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}
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switch ($ext) {
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case 'epub':
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return self::parseEpub($path);
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case 'txt':
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case 'text':
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return self::parseTxt($path, $name);
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case 'pdf':
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return ['ok' => true, 'error' => '', 'meta' => self::guessFromName($name),
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'chapters' => [], 'note' => 'PDF 只存文件（服务端不提取正文），阅读时用浏览器自带的 PDF 阅读器看。'];
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default:
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return ['ok' => true, 'error' => '', 'meta' => self::guessFromName($name),
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'chapters' => [], 'note' => self::formatWord($ext) . ' 正文解析不了，文件已经存好了，元数据请手填。'];
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}
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}
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// ---------------- EPUB ----------------
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/**
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* EPUB = 一个 zip 包：META-INF/container.xml 指路 → .opf 里放元数据与清单 →
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* spine 决定章节顺序 → 每一章是一个 XHTML 文件。
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*
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* ⚠️ 路径要**相对 opf 所在目录**拼（很多书的 OEBPS/ 与 opf 不在一起），
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* 直接用 opf 的路径当基准去拼会 404（ZipArchive::getFromName 返回 false）。
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*/
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private static function parseEpub(string $path): array
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{
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if (!class_exists('ZipArchive')) {
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return ['ok' => true, 'error' => '', 'meta' => [], 'chapters' => [],
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'note' => '服务器没有 zip 扩展，EPUB 的正文解析不了；文件已保存，元数据请手填。'];
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}
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$zip = new \ZipArchive();
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$rc = $zip->open($path);
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if ($rc !== true) {
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return ['ok' => false, 'error' => '这个 EPUB 打不开（错误码 ' . (int)$rc . '）',
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'meta' => [], 'chapters' => []];
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}
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// ① 找 OPF（书的"目录清单"）
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$opfPath = '';
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$container = $zip->getFromName('META-INF/container.xml');
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if ($container !== false && $container !== '') {
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if (preg_match('/full-path\s*=\s*["\']([^"\']+)["\']/i', $container, $m)) {
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$opfPath = trim($m[1]);
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}
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}
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if ($opfPath === '') {
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// 有些书没写 container.xml（不合规范但确实存在）→ 自己找第一个 .opf
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for ($i = 0; $i < $zip->numFiles; $i++) {
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$n = (string)$zip->getNameIndex($i);
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if (substr(strtolower($n), -4) === '.opf') {
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$opfPath = $n;
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break;
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}
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}
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}
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if ($opfPath === '') {
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$zip->close();
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return ['ok' => false, 'error' => '这个 EPUB 里找不到目录文件（.opf），可能已损坏',
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'meta' => [], 'chapters' => []];
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}
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$opfDir = self::dirOf($opfPath);
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$opf = (string)$zip->getFromName($opfPath);
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$zip->close();
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if ($opf === '') {
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return ['ok' => false, 'error' => '这个 EPUB 的目录文件是空的', 'meta' => [], 'chapters' => []];
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}
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$meta = self::opfMeta($opf);
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// ② 清单：id → 文件
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$manifest = self::opfManifest($opf);
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// ③ 顺序：spine 里的 idref
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$spine = self::opfSpine($opf, $manifest);
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// ④ 封面：metadata 里的 <meta name="cover" content="id">，或 manifest 里 properties 带 cover-image
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$cover = self::epubCover($path, $opf, $opfDir, $manifest);
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$zip2 = new \ZipArchive();
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if ($zip2->open($path) !== true) {
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return ['ok' => true, 'meta' => $meta, 'chapters' => [], 'cover' => $cover,
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'note' => '元数据读到了，正文没读出来（文件打不开第二次）。'];
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}
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$chapters = [];
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$seq = 0;
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foreach ($spine as $href) {
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if (count($chapters) >= self::CHAPTER_LIMIT) {
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break;
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}
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$full = self::joinPath($opfDir, $href);
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$raw = $zip2->getFromName($full);
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// ⚠️ 有些书的 spine 里写了 HTML 实体或大小写不一致 → 退一步按名字再试
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if ($raw === false) {
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$raw = $zip2->getFromName(ltrim($href, '/'));
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}
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if ($raw === false || $raw === '') {
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continue;
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}
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[$title, $body] = self::xhtmlToText($raw);
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if (trim($body) === '') {
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continue;
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}
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$seq++;
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$chapters[] = [
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'seq' => $seq,
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'title' => $title !== '' ? $title : ('第 ' . $seq . ' 章'),
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'content' => mb_substr($body, 0, self::CHAPTER_MAX, 'UTF-8'),
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];
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}
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$zip2->close();
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return ['ok' => true, 'error' => '', 'meta' => $meta, 'chapters' => $chapters, 'cover' => $cover];
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}
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/** OPF 的 metadata：书名 / 作者 / 出版社 / 语言 / ISBN / 简介 */
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private static function opfMeta(string $opf): array
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{
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$get = static function (string $tag) use ($opf): string {
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if (preg_match_all('#<dc:' . $tag . '[^>]*>(.*?)</dc:' . $tag . '>#is', $opf, $m)) {
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foreach ($m[1] as $v) {
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$v = trim(html_entity_decode(strip_tags($v), ENT_QUOTES | ENT_HTML5, 'UTF-8'));
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if ($v !== '') {
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return $v;
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}
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}
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}
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return '';
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};
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$isbn = '';
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if (preg_match_all('#<dc:identifier[^>]*>(.*?)</dc:identifier>#is', $opf, $mm)) {
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foreach ($mm[0] as $i => $full) {
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$v = trim(strip_tags($mm[1][$i]));
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// opf:scheme="ISBN" 或 urn:isbn:xxxx
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if (stripos($full, 'ISBN') !== false || stripos($v, 'isbn') === 0) {
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$isbn = preg_replace('/^urn:isbn:/i', '', $v) ?? '';
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break;
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}
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if ($isbn === '' && preg_match('/^(97[89])?\d{9}[\dXx]$/', $v)) {
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$isbn = $v;
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}
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}
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}
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$date = $get('date');
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return [
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'title' => $get('title'),
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'subtitle' => '',
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'author' => $get('creator'),
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'publisher' => $get('publisher'),
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'language' => $get('language'),
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'isbn' => $isbn,
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'published' => $date !== '' ? substr($date, 0, 10) : '',
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'summary' => $get('description'),
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];
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}
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/** @return array<string,array{href:string,type:string,props:string}> id => 项 */
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private static function opfManifest(string $opf): array
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{
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$out = [];
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if (!preg_match_all('#<item\s+([^>]*?)/?>#is', $opf, $m)) {
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return $out;
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}
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foreach ($m[1] as $attr) {
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$a = self::attrs($attr);
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$id = (string)($a['id'] ?? '');
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if ($id === '') {
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continue;
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}
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$out[$id] = [
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'href' => html_entity_decode((string)($a['href'] ?? ''), ENT_QUOTES | ENT_HTML5, 'UTF-8'),
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'type' => strtolower((string)($a['media-type'] ?? '')),
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'props' => strtolower((string)($a['properties'] ?? '')),
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];
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}
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return $out;
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}
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/** @return string[] 按阅读顺序排的正文文件（相对 opf 目录） */
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private static function opfSpine(string $opf, array $manifest): array
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{
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$ids = [];
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if (preg_match('#<spine\b[^>]*>(.*?)</spine>#is', $opf, $m)) {
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if (preg_match_all('#<itemref\s+([^>]*?)/?>#is', $m[1], $mm)) {
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foreach ($mm[1] as $attr) {
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$a = self::attrs($attr);
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$id = (string)($a['idref'] ?? '');
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if ($id !== '') {
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$ids[] = $id;
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}
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}
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}
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}
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$out = [];
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foreach ($ids as $id) {
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$it = $manifest[$id] ?? null;
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if (!$it) {
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continue;
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}
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$t = (string)$it['type'];
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// 只收正文档（xhtml / html / xml）；图片、css、ncx 跳过
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if ($t !== '' && strpos($t, 'html') === false && strpos($t, 'xml') === false) {
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continue;
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}
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$out[] = (string)$it['href'];
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}
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// spine 为空（不合规范）→ 退一步：按 manifest 里所有 html 收
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if (!$out) {
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foreach ($manifest as $it) {
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$t = (string)$it['type'];
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if (strpos($t, 'html') !== false) {
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$out[] = (string)$it['href'];
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}
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}
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}
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return $out;
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}
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/** 封面：找出图并存到临时文件（调用方再交给 Upload） */
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private static function epubCover(string $path, string $opf, string $opfDir, array $manifest): ?array
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{
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$href = '';
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if (preg_match('#<meta\s+[^>]*name\s*=\s*["\']cover["\'][^>]*content\s*=\s*["\']([^"\']+)["\']#is', $opf, $m)) {
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$id = trim($m[1]);
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$href = (string)($manifest[$id]['href'] ?? '');
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}
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if ($href === '') {
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if (preg_match('#<meta\s+[^>]*content\s*=\s*["\']([^"\']+)["\'][^>]*name\s*=\s*["\']cover["\']#is', $opf, $m2)) {
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$id = trim($m2[1]);
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$href = (string)($manifest[$id]['href'] ?? '');
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}
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}
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if ($href === '') {
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foreach ($manifest as $it) {
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if (strpos((string)$it['props'], 'cover-image') !== false) {
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$href = (string)$it['href'];
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break;
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}
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}
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}
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if ($href === '') {
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foreach ($manifest as $it) {
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if (strpos((string)$it['type'], 'image/') === 0
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&& stripos((string)$it['href'], 'cover') !== false) {
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$href = (string)$it['href'];
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break;
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}
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}
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}
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if ($href === '') {
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return null;
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}
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if (!class_exists('ZipArchive')) {
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return null;
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}
|
|||
|
|
$zip = new \ZipArchive();
|
|||
|
|
if ($zip->open($path) !== true) {
|
|||
|
|
return null;
|
|||
|
|
}
|
|||
|
|
$full = self::joinPath($opfDir, $href);
|
|||
|
|
$bin = $zip->getFromName($full);
|
|||
|
|
if ($bin === false) {
|
|||
|
|
$bin = $zip->getFromName(ltrim($href, '/'));
|
|||
|
|
}
|
|||
|
|
$zip->close();
|
|||
|
|
if ($bin === false || $bin === '') {
|
|||
|
|
return null;
|
|||
|
|
}
|
|||
|
|
$tmp = tempnam(sys_get_temp_dir(), 'fbcov');
|
|||
|
|
if ($tmp === false || @file_put_contents($tmp, $bin) === false) {
|
|||
|
|
return null;
|
|||
|
|
}
|
|||
|
|
$fino = new \finfo(FILEINFO_MIME_TYPE);
|
|||
|
|
$mime = (string)$fino->file($tmp);
|
|||
|
|
if (strpos($mime, 'image/') !== 0) {
|
|||
|
|
@unlink($tmp);
|
|||
|
|
return null;
|
|||
|
|
}
|
|||
|
|
return ['tmp' => $tmp, 'mime' => $mime];
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* XHTML → 纯文本（保留段落换行）。
|
|||
|
|
*
|
|||
|
|
* ⚠️ 不是"去标签"就完事：
|
|||
|
|
* ① 先砍掉 script / style / head（不然 CSS 与 JS 会混进正文）；
|
|||
|
|
* ② 块级标签换成换行（<p><div><br><h*>），否则整章粘成一团；
|
|||
|
|
* ③ 实体还原（ & …）之后再 strip_tags；
|
|||
|
|
* ④ 连续空行压成一个 —— 电子书的源文件里空行多到能占一半篇幅。
|
|||
|
|
*/
|
|||
|
|
private static function xhtmlToText(string $html): array
|
|||
|
|
{
|
|||
|
|
$title = '';
|
|||
|
|
if (preg_match('#<title[^>]*>(.*?)</title>#is', $html, $m)) {
|
|||
|
|
$title = trim(html_entity_decode(strip_tags($m[1]), ENT_QUOTES | ENT_HTML5, 'UTF-8'));
|
|||
|
|
}
|
|||
|
|
$body = $html;
|
|||
|
|
if (preg_match('#<body\b[^>]*>(.*)</body>#is', $body, $m2)) {
|
|||
|
|
$body = $m2[1];
|
|||
|
|
if ($title === '' && preg_match('#<h[1-4][^>]*>(.*?)</h[1-4]>#is', $body, $m3)) {
|
|||
|
|
$title = trim(html_entity_decode(strip_tags($m3[1]), ENT_QUOTES | ENT_HTML5, 'UTF-8'));
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
$body = preg_replace('#<(script|style|noscript)\b[^>]*>.*?</\1>#is', '', $body) ?? $body;
|
|||
|
|
$body = preg_replace('#<br\s*/?>#i', "\n", $body) ?? $body;
|
|||
|
|
$body = preg_replace('#</(p|div|h[1-6]|li|tr|blockquote)>#i', "\n", $body) ?? $body;
|
|||
|
|
$body = html_entity_decode(strip_tags($body), ENT_QUOTES | ENT_HTML5, 'UTF-8');
|
|||
|
|
$body = str_replace(["\r\n", "\r", "\xC2\xA0"], ["\n", "\n", ' '], $body);
|
|||
|
|
$body = preg_replace('/[ \t]+\n/', "\n", $body) ?? $body;
|
|||
|
|
$body = preg_replace('/\n{3,}/', "\n\n", $body) ?? $body;
|
|||
|
|
$body = preg_replace('/^\n+|\n+$/', '', $body) ?? $body;
|
|||
|
|
return [mb_substr($title, 0, 300, 'UTF-8'), $body];
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ---------------- TXT ----------------
|
|||
|
|
|
|||
|
|
private static function parseTxt(string $path, string $name): array
|
|||
|
|
{
|
|||
|
|
$raw = (string)@file_get_contents($path);
|
|||
|
|
if ($raw === '') {
|
|||
|
|
return ['ok' => false, 'error' => '这个文本文件是空的', 'meta' => [], 'chapters' => []];
|
|||
|
|
}
|
|||
|
|
$text = self::toUtf8($raw);
|
|||
|
|
$chapters = self::splitChapters($text);
|
|||
|
|
return ['ok' => true, 'error' => '', 'meta' => self::guessFromName($name), 'chapters' => $chapters];
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 编码兜底：UTF-8 → GB18030（中文电子书最常见的老编码）→ BIG5 → Latin1。
|
|||
|
|
* ⚠️ 不认编码就硬读，中文会整页乱码 —— 那是"看起来解析了、其实全是问号"。
|
|||
|
|
*/
|
|||
|
|
private static function toUtf8(string $raw): string
|
|||
|
|
{
|
|||
|
|
if (substr($raw, 0, 3) === "\xEF\xBB\xBF") {
|
|||
|
|
return substr($raw, 3);
|
|||
|
|
}
|
|||
|
|
if (mb_check_encoding($raw, 'UTF-8')) {
|
|||
|
|
return $raw;
|
|||
|
|
}
|
|||
|
|
foreach (['GB18030', 'BIG-5', 'ISO-8859-1'] as $enc) {
|
|||
|
|
$s = @iconv($enc, 'UTF-8//IGNORE', $raw);
|
|||
|
|
if ($s !== false && $s !== '') {
|
|||
|
|
return $s;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return $raw;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 切章：认"第X章/第X节/序/前言/后记/Chapter N"这类行；
|
|||
|
|
* 认不出来就按 5000 字一段（不然一本长篇会变成一整页，浏览器直接卡死）。
|
|||
|
|
*/
|
|||
|
|
private static function splitChapters(string $text): array
|
|||
|
|
{
|
|||
|
|
$text = str_replace(["\r\n", "\r"], "\n", $text);
|
|||
|
|
$lines = explode("\n", $text);
|
|||
|
|
$re = '/^\s*(第\s*[0-9零一二三四五六七八九十百千万]+\s*[章节回部篇卷集]\s*'
|
|||
|
|
. '|chapter\s+[0-9ivx]+\b'
|
|||
|
|
. '|序章|序言|前言|自序|后记|附录|尾声|楔子)/iu';
|
|||
|
|
$chapters = [];
|
|||
|
|
$curTitle = '';
|
|||
|
|
$buf = '';
|
|||
|
|
$flush = static function () use (&$chapters, &$curTitle, &$buf): void {
|
|||
|
|
$body = trim($buf);
|
|||
|
|
if ($body !== '') {
|
|||
|
|
$chapters[] = ['title' => $curTitle, 'content' => mb_substr($body, 0, self::CHAPTER_MAX, 'UTF-8')];
|
|||
|
|
}
|
|||
|
|
$buf = '';
|
|||
|
|
};
|
|||
|
|
foreach ($lines as $ln) {
|
|||
|
|
$t = trim($ln);
|
|||
|
|
if ($t !== '' && mb_strlen($t, 'UTF-8') <= 60 && preg_match($re, $t)) {
|
|||
|
|
$flush();
|
|||
|
|
$curTitle = mb_substr($t, 0, 200, 'UTF-8');
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
$buf .= $ln . "\n";
|
|||
|
|
}
|
|||
|
|
$flush();
|
|||
|
|
|
|||
|
|
if (count($chapters) <= 1) {
|
|||
|
|
// 没切出来 → 按字数均分
|
|||
|
|
$chapters = [];
|
|||
|
|
$n = mb_strlen($text, 'UTF-8');
|
|||
|
|
$size = 5000;
|
|||
|
|
$parts = (int)max(1, ceil($n / $size));
|
|||
|
|
for ($i = 0; $i < $parts; $i++) {
|
|||
|
|
$seg = mb_substr($text, $i * $size, $size, 'UTF-8');
|
|||
|
|
if (trim($seg) === '') {
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
$chapters[] = ['title' => '第 ' . ($i + 1) . ' 段', 'content' => $seg];
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
$out = [];
|
|||
|
|
$seq = 0;
|
|||
|
|
foreach ($chapters as $c) {
|
|||
|
|
if (count($out) >= self::CHAPTER_LIMIT) {
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
$seq++;
|
|||
|
|
$out[] = ['seq' => $seq, 'title' => (string)$c['title'], 'content' => (string)$c['content']];
|
|||
|
|
}
|
|||
|
|
return $out;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ---------------- 文件名猜书名 / 作者 ----------------
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 从 "三体（全三册）- 刘慈欣.epub" 这类文件名里猜。
|
|||
|
|
* ⚠️ 只是**兜底**：猜错了用户一眼能改，比空着强（空着要一个字一个字敲）。
|
|||
|
|
*/
|
|||
|
|
private static function guessFromName(string $name): array
|
|||
|
|
{
|
|||
|
|
$base = pathinfo((string)$name, PATHINFO_FILENAME);
|
|||
|
|
$base = trim(preg_replace('/[\[\(（【].*?[\]\)）】]/u', '', $base) ?? $base);
|
|||
|
|
$author = '';
|
|||
|
|
$title = $base;
|
|||
|
|
foreach ([' - ', '—', '－', '_'] as $sep) {
|
|||
|
|
if (strpos($base, $sep) !== false) {
|
|||
|
|
$parts = explode($sep, $base);
|
|||
|
|
$title = trim((string)array_pop($parts));
|
|||
|
|
$author = trim(implode(' ', $parts));
|
|||
|
|
break;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
// "作者 书名" 反过来也常见：名字很短的那一段更像作者
|
|||
|
|
if ($author === '' && preg_match('/^(.+?)\s{1}(.+)$/u', $base, $m)) {
|
|||
|
|
$author = trim($m[1]);
|
|||
|
|
$title = trim($m[2]);
|
|||
|
|
}
|
|||
|
|
$title = trim(preg_replace('/\.(epub|txt|pdf|mobi|azw3?)$/i', '', $title) ?? $title);
|
|||
|
|
return [
|
|||
|
|
'title' => mb_substr($title, 0, 300, 'UTF-8'),
|
|||
|
|
'subtitle' => '',
|
|||
|
|
'author' => mb_substr($author, 0, 200, 'UTF-8'),
|
|||
|
|
'publisher' => '',
|
|||
|
|
'language' => '',
|
|||
|
|
'isbn' => '',
|
|||
|
|
'published' => '',
|
|||
|
|
'summary' => '',
|
|||
|
|
];
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public static function formatWord(string $ext): string
|
|||
|
|
{
|
|||
|
|
$map = ['epub' => 'EPUB', 'txt' => 'TXT', 'pdf' => 'PDF', 'mobi' => 'MOBI',
|
|||
|
|
'azw' => 'AZW', 'azw3' => 'AZW3', 'doc' => 'DOC', 'docx' => 'DOCX'];
|
|||
|
|
return $map[strtolower($ext)] ?? strtoupper($ext);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/** 这个文件能不能直接放进浏览器内嵌阅读（PDF 就是） */
|
|||
|
|
public static function inlinable(?string $fmt): bool
|
|||
|
|
{
|
|||
|
|
return strtolower((string)$fmt) === 'pdf';
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// ---------------- 小工具 ----------------
|
|||
|
|
|
|||
|
|
/** @return array<string,string> */
|
|||
|
|
private static function attrs(string $s): array
|
|||
|
|
{
|
|||
|
|
$out = [];
|
|||
|
|
if (preg_match_all('/([a-zA-Z_:][-a-zA-Z0-9_:.]*)\s*=\s*(["\'])(.*?)\2/s', $s, $m, PREG_SET_ORDER)) {
|
|||
|
|
foreach ($m as $x) {
|
|||
|
|
$out[strtolower($x[1])] = $x[3];
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return $out;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
private static function dirOf(string $p): string
|
|||
|
|
{
|
|||
|
|
$p = str_replace('\\', '/', $p);
|
|||
|
|
$i = strrpos($p, '/');
|
|||
|
|
return $i === false ? '' : substr($p, 0, $i + 1);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/** 把 opf 目录与 href 拼成 zip 内的完整路径（顺手去掉 ../ 与锚点） */
|
|||
|
|
private static function joinPath(string $dir, string $href): string
|
|||
|
|
{
|
|||
|
|
$href = preg_replace('/#.*$/', '', $href) ?? $href;
|
|||
|
|
$href = str_replace('\\', '/', trim(urldecode($href)));
|
|||
|
|
$full = $dir . $href;
|
|||
|
|
// 消掉 a/b/../c
|
|||
|
|
$parts = [];
|
|||
|
|
foreach (explode('/', str_replace('\\', '/', $full)) as $seg) {
|
|||
|
|
if ($seg === '' || $seg === '.') {
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
if ($seg === '..') {
|
|||
|
|
array_pop($parts);
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
$parts[] = $seg;
|
|||
|
|
}
|
|||
|
|
return implode('/', $parts);
|
|||
|
|
}
|
|||
|
|
}
|