.db3} {--copy-to= : 导出后额外复制一份到该路径（例如移动端仓库的 assets/db/tipitaka.db3）}'; protected $description = '导出移动端离线目录 SQLite（含 tags 与义注复注关联段落）'; public function handle(): int { $out = $this->option('out'); if (! $out) { $dir = storage_path('app/public/export/mobile'); if (! is_dir($dir)) { mkdir($dir, 0775, true); } $out = $dir.'/tipitaka-heading-'.date('Y-m-d').'.db3'; } if (file_exists($out)) { unlink($out); } $dbh = new \PDO('sqlite:'.$out, '', '', [\PDO::ATTR_PERSISTENT => true]); $dbh->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION); $this->createSchema($dbh); $texts = $this->exportPaliTexts($dbh); $this->writeMeta($dbh, [ 'generated_at' => date('c'), 'source' => config('app.url', ''), 'pali_text_rows' => (string) $texts, ]); // 建索引放在插入之后，避免边插边维护索引 $this->createIndexes($dbh); $dbh->exec('VACUUM'); $dbh = null; $this->newLine(); $this->info(sprintf( '导出完成：%s（%s，pali_text %d 行）', $out, $this->humanSize(filesize($out)), $texts )); $copyTo = $this->option('copy-to'); if ($copyTo) { $dir = dirname($copyTo); if (! is_dir($dir)) { mkdir($dir, 0775, true); } copy($out, $copyTo); $this->info('已复制到：'.$copyTo); } return 0; } private function createSchema(\PDO $dbh): void { // 全量段落（不只是章节标题行）：下载功能需要非章节段落的字符数。 // 关联注释书（cs_para / book_name）已合并进本表 —— 每个段落至多对应 // 一部注释书，无对应时为 NULL。 $dbh->exec('CREATE TABLE pali_text ( book INTEGER NOT NULL, paragraph INTEGER NOT NULL, level INTEGER NOT NULL, toc TEXT, length INTEGER, chapter_len INTEGER, chapter_strlen INTEGER, parent INTEGER, tags TEXT, cs_para INTEGER, book_name TEXT, PRIMARY KEY (book, paragraph) )'); $dbh->exec('CREATE TABLE meta (key TEXT PRIMARY KEY, value TEXT)'); } private function createIndexes(\PDO $dbh): void { $dbh->exec('CREATE INDEX idx_pali_text_book_level ON pali_text (book, level)'); $dbh->exec('CREATE INDEX idx_pali_text_parent ON pali_text (book, parent)'); $dbh->exec('CREATE INDEX idx_pali_text_related ON pali_text (book_name, cs_para)'); } private function exportPaliTexts(\PDO $dbh): int { $total = PaliText::count(); $this->line("导出 pali_text（全量段落）：{$total} 行"); $bar = $this->output->createProgressBar($total); $bar->setRedrawFrequency(5000); // uid 只用于 join 标签，不写入结果表 $tagsByUid = $this->loadTags(); $related = $this->loadRelated(); $stmt = $dbh->prepare('INSERT INTO pali_text (book, paragraph, level, toc, length, chapter_len, chapter_strlen, parent, tags, cs_para, book_name) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)'); $dbh->beginTransaction(); $n = 0; foreach ( PaliText::select(['uid', 'book', 'paragraph', 'level', 'toc', 'lenght', 'chapter_len', 'chapter_strlen', 'parent']) ->orderBy('book') ->orderBy('paragraph') ->cursor() as $row ) { $rel = $related[$row->book.'-'.$row->paragraph] ?? null; $stmt->execute([ $row->book, $row->paragraph, $row->level, $row->toc !== '' ? $row->toc : null, // 源表列名 `lenght` 是拼写错误，导出时纠正为 `length` $row->lenght, $row->chapter_len, $row->chapter_strlen, $row->parent, isset($tagsByUid[$row->uid]) ? implode(',', $tagsByUid[$row->uid]) : null, $rel[0] ?? null, $rel[1] ?? null, ]); $n++; $bar->advance(); } $dbh->commit(); $bar->finish(); $this->newLine(); return $n; } /** * 关联注释书：由段落 (book, para) 找到对应义注 / 复注的起始位置。 * * related_paragraphs 中同一段落会有多行，映射到一段连续的 cs_para 区间， * 但 book_name 唯一，因此这里取 min(cs_para) 作为起始位置合并成一行。 * book_name 为空表示该段落没有对应的注释书，直接跳过（结果列留 NULL）。 * * @return array "book-para" => [cs_para, book_name] */ private function loadRelated(): array { $this->line('载入 related_paragraphs …'); $out = []; DB::table('related_paragraphs') ->select(['book', 'para', 'book_name', DB::raw('min(cs_para) as cs_para')]) ->whereNotNull('book_name') ->where('book_name', '<>', '') ->groupBy('book', 'para', 'book_name') ->orderBy('book') ->orderBy('para') ->chunk(50000, function ($rows) use (&$out) { foreach ($rows as $r) { $out[$r->book.'-'.$r->para] = [(int) $r->cs_para, $r->book_name]; } }); $this->line(' 有注释书的段落：'.count($out)); return $out; } /** @return array uid => tag names */ private function loadTags(): array { $this->line('载入 tag_maps / tags …'); $out = []; DB::table('tag_maps') ->join('tags', 'tags.id', '=', 'tag_maps.tag_id') ->where('tag_maps.table_name', 'pali_texts') ->select(['tag_maps.anchor_id', 'tags.name']) ->orderBy('tag_maps.anchor_id') ->chunk(20000, function ($rows) use (&$out) { foreach ($rows as $r) { $out[$r->anchor_id][] = $r->name; } }); $this->line(' 标签锚点：'.count($out)); return $out; } private function writeMeta(\PDO $dbh, array $meta): void { $stmt = $dbh->prepare('INSERT INTO meta (key, value) VALUES (?, ?)'); foreach ($meta as $k => $v) { $stmt->execute([$k, $v]); } } private function humanSize(int $bytes): string { $units = ['B', 'KB', 'MB', 'GB']; $i = 0; while ($bytes >= 1024 && $i < count($units) - 1) { $bytes /= 1024; $i++; } return round($bytes, 1).' '.$units[$i]; } }