nxxy335
d05fd4a9b5
导出-每次考试/多考试对比： - 合格次数阈值等标记项抽为常显区块，三类成绩表共用 - 附缺考名单扩展到多考试导出（取所选考试全都没交的人） - 块表每场固定2列（成绩+合并空位），修复漏推空串导致的整行左移/串列 - 列宽按实际内容估算，合并区空位只给最小宽度 - 合格次数始终显示实际次数(含0)，仅 ≥ 阈值标绿底 - 打印标题改为「成绩明细」，缺考名单分页单独成页 - 打印样式加 print-color-adjust:exact，绿底/红字可正常印出 数据大屏： - ?class= 班级大屏免登录公开访问，接口侧放行并按班级裁剪后回传 - 单班大屏移除退出按钮，仅首页保留 - 修复红绿判定真bug：membersTable 误用 window.DASH(DASH为let声明取不到) 改为 scoreGrade() 直接读自由变量，按后台合格率正确判红/黄/绿 测试/样例/文档同步更新，全量回归通过。
578 lines
26 KiB
PHP
578 lines
26 KiB
PHP
<?php
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/**
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* NY 问卷考试系统数据平台 - 零依赖 XLSX 生成
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*
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* 仅用 PHP 内置函数生成最小可用的 .xlsx 文件：
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* - 有 zip 扩展时走 ZipArchive；无 zip 扩展时回退到"手写 ZIP(stored)"实现，保证任何环境都能导出
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* - 单元格统一按「共享字符串 + 文本格式(numFmtId=49)」写入，学号/账号等长数字不会被转成科学计数法
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* - 表头行（默认第 1 行，可用 header_rows 指定多行）加粗 + 居中 + 边框
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* - 支持合并单元格（merges），被合并的非首格写「空值 + 同样的样式」，保证合并区域四周边框完整
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* - 支持单元格级样式（cell_styles）：按 [行,列] 指定「红字 / 绿底」等标记，
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* 用于"每场最高分标红、合格次数达标标绿"
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*/
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declare(strict_types=1);
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final class XlsxWriter
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{
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/** @var array<string,int> 共享字符串 => 索引 */
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private array $strIndex = [];
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/** @var array<int,string> 索引 => 共享字符串 */
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private array $strings = [];
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/** @var array<int,int> 索引 => 出现次数（sst 的 count 用，区别于 uniqueCount） */
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private array $strCount = [];
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/** @var array<int,array{name:string,rows:array,widths:array,merges:array}> 工作表（按输出顺序） */
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private array $sheets = [];
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// 样式索引（见 stylesXml）
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private const S_DEFAULT = 0; // 常规（无边框）
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private const S_HEADER = 1; // 表头：加粗 + 居中 + 细边框
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private const S_TEXT = 2; // 数据：文本格式（numFmtId=49）+ 细边框
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private const S_RED = 3; // 数据 + 红字（最高分标记）
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private const S_GREEN = 4; // 数据 + 绿底（合格次数达标标记）
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private const S_HEADER_GREEN = 5; // 表头样式 + 绿底（合格次数行的表头格）
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/**
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* 语义化标记 => 样式索引。调用方只管语义（'red' / 'green' / 'header_green'），
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* 具体配色编号由本类统一维护，避免外部硬编码样式下标。
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*/
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private const MARK_STYLES = [
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'red' => self::S_RED,
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'green' => self::S_GREEN,
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'header_green' => self::S_HEADER_GREEN,
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];
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/**
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* 生成单表 xlsx 二进制内容（兼容旧调用）
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*
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* @param array $rows 二维表，第一行视为表头；每个元素会被强制转成字符串
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* @param array $opts ['widths' => [列宽,...], 'title' => 工作表名]
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* @return string xlsx 文件二进制
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*/
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public static function render(array $rows, array $opts = []): string
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{
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return self::renderMulti([[
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'name' => (string)($opts['title'] ?? 'Sheet1'),
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'rows' => $rows,
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'widths' => array_values((array)($opts['widths'] ?? [])),
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]]);
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}
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/**
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* 生成多工作表 xlsx
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*
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* 说明：所有单元格都写成「共享字符串 + 文本格式(numFmtId=49)」，
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* 因此既不会出现长学号被转成科学计数法，也不会把以 = + - @ 开头的内容
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* 当成公式执行（天然规避 CSV 公式注入问题）。
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*
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* @param array $sheets 每个元素：['name'=>工作表名, 'rows'=>二维表, 'widths'=>[列宽...], 'merges'=>[[r1,c1,r2,c2],...], 'header_rows'=>int,
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* 'cell_styles'=>['r,c'=>'red'|'green'|'header_green', ...]]
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* merges 为 1-based 闭区间（含表头行），如 [[2,1,4,1]] = A2:A4 纵向合并
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* header_rows 表头行数（默认 1；两行表头的交叉表用 2）
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* cell_styles 的键为 1-based 的 "行,列"，值为语义标记名（未知标记静默忽略）
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* @return string xlsx 文件二进制
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*/
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public static function renderMulti(array $sheets): string
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{
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$w = new self();
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foreach ($sheets as $sh) {
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if (!is_array($sh)) {
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continue;
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}
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$rows = array_values((array)($sh['rows'] ?? []));
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if ($rows === []) {
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continue; // 空表不输出，避免 Excel 提示修复
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}
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$w->sheets[] = [
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'name' => self::safeSheetName((string)($sh['name'] ?? ''), count($w->sheets) + 1, $w->sheets),
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'rows' => $rows,
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'widths' => array_values((array)($sh['widths'] ?? [])),
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'merges' => self::normalizeMerges((array)($sh['merges'] ?? []), count($rows), self::maxCols($rows)),
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'header_rows' => max(1, (int)($sh['header_rows'] ?? 1)),
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'cell_styles' => self::normalizeCellStyles((array)($sh['cell_styles'] ?? [])),
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];
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}
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if ($w->sheets === []) {
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// 保底：至少输出一张空表
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$w->sheets[] = ['name' => 'Sheet1', 'rows' => [['']], 'widths' => [], 'merges' => [], 'header_rows' => 1, 'cell_styles' => []];
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}
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return $w->build();
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}
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/**
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* 归一化单元格样式表：键 "行,列"（1-based）=> 样式索引；未知标记直接丢弃。
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*
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* @param array $raw ['3,5' => 'red', [4,5] => 'green', ...]（两种写法都接受）
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* @return array<string,int>
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*/
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private static function normalizeCellStyles(array $raw): array
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{
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$out = [];
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foreach ($raw as $k => $mark) {
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if (is_array($k) && count($k) >= 2) {
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$key = ((int)$k[0]) . ',' . ((int)$k[1]);
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} else {
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$key = (string)$k;
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if (!preg_match('/^\s*(\d+)\s*,\s*(\d+)\s*$/', $key, $m)) {
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continue;
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}
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$key = ((int)$m[1]) . ',' . ((int)$m[2]);
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}
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$idx = self::MARK_STYLES[(string)$mark] ?? null;
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if ($idx === null) {
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continue; // 未知标记：不写样式，不报错
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}
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[$r, $c] = array_map('intval', explode(',', $key));
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if ($r < 1 || $c < 1) {
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continue;
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}
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$out[$key] = $idx;
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}
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return $out;
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}
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/** 二维表最大列数（至少 1） */
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private static function maxCols(array $rows): int
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{
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$max = 1;
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foreach ($rows as $r) {
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$max = max($max, count((array)$r));
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}
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return $max;
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}
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/**
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* 归一化合并区间：过滤非法 / 退化（单格）区间，并按行列排序，保证 Excel 不报修复提示。
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*
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* @param array $raw [[r1,c1,r2,c2], ...] 1-based
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* @return array<int,array{0:int,1:int,2:int,3:int}>
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*/
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private static function normalizeMerges(array $raw, int $maxRow, int $maxCol): array
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{
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$out = [];
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foreach ($raw as $m) {
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if (!is_array($m) || count($m) < 4) {
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continue;
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}
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$r1 = (int)$m[0]; $c1 = (int)$m[1]; $r2 = (int)$m[2]; $c2 = (int)$m[3];
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if ($r1 > $r2) { [$r1, $r2] = [$r2, $r1]; }
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if ($c1 > $c2) { [$c1, $c2] = [$c2, $c1]; }
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if ($r1 < 1 || $c1 < 1 || $r2 > $maxRow || $c2 > $maxCol) {
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continue; // 越界丢弃
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}
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if ($r1 === $r2 && $c1 === $c2) {
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continue; // 单格无需合并
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}
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$out[] = [$r1, $c1, $r2, $c2];
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}
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usort($out, static function (array $a, array $b): int {
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return [$a[0], $a[1], $a[2], $a[3]] <=> [$b[0], $b[1], $b[2], $b[3]];
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});
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return $out;
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}
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/* ---------------- 内部：构建 ---------------- */
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private function build(): string
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{
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$files = [
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'[Content_Types].xml' => '', // 占位，下面按表数量生成
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];
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$sheetXmls = [];
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$names = [];
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foreach ($this->sheets as $i => $sh) {
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$n = $i + 1;
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$maxCol = 1;
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foreach ($sh['rows'] as $r) {
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$maxCol = max($maxCol, count((array)$r));
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}
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$maxRow = max(1, count($sh['rows']));
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// 登记共享字符串并生成单元格索引
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$cells = [];
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foreach (array_values($sh['rows']) as $ri => $row) {
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$r = (int)$ri + 1;
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foreach (array_values((array)$row) as $ci => $val) {
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$c = (int)$ci + 1;
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$cells[$r][$c] = $this->intern((string)($val ?? ''));
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}
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}
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$sheetXmls['xl/worksheets/sheet' . $n . '.xml'] = $this->sheetXml(
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$cells,
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$maxRow,
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$maxCol,
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$sh['widths'],
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$sh['merges'] ?? [],
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(int)($sh['header_rows'] ?? 1),
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(array)($sh['cell_styles'] ?? [])
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);
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$names[] = $sh['name'];
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}
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$count = count($this->sheets);
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$files = [
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'[Content_Types].xml' => $this->contentTypesXml($count),
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'_rels/.rels' => $this->rootRelsXml(),
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'docProps/app.xml' => $this->appXml(),
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'docProps/core.xml' => $this->coreXml($names[0] ?? 'Sheet1'),
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'xl/workbook.xml' => $this->workbookXml($names),
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'xl/_rels/workbook.xml.rels' => $this->workbookRelsXml($count),
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'xl/styles.xml' => $this->stylesXml(),
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'xl/sharedStrings.xml' => $this->sharedStringsXml(),
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] + $sheetXmls;
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return $this->zip($files);
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}
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/**
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* 工作表名安全化：Excel 限制 31 字符、禁止 []:*?/\、不可重复、不可为空
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*/
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private static function safeSheetName(string $name, int $seq, array $existing): string
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{
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$bad = ['\\', '/', '?', '*', '[', ']', ':'];
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$n = trim(str_replace($bad, '_', $name));
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if ($n === '') {
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$n = 'Sheet' . $seq;
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}
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if (function_exists('mb_substr')) {
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$n = mb_substr($n, 0, 31, 'UTF-8');
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} else {
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$n = substr($n, 0, 31);
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}
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// 去重
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$base = $n;
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$i = 2;
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$taken = [];
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foreach ($existing as $e) {
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$taken[strtolower($e['name'])] = true;
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}
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while (isset($taken[strtolower($n)])) {
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$suffix = '(' . $i . ')';
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$n = (function_exists('mb_substr') ? mb_substr($base, 0, 31 - strlen($suffix), 'UTF-8') : substr($base, 0, 31 - strlen($suffix))) . $suffix;
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$i++;
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}
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return $n;
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}
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private function intern(string $s): int
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{
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if (!array_key_exists($s, $this->strIndex)) {
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$i = count($this->strings);
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$this->strIndex[$s] = $i;
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$this->strings[$i] = $s;
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$this->strCount[$i] = 0;
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}
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$i = $this->strIndex[$s];
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$this->strCount[$i] = ($this->strCount[$i] ?? 0) + 1;
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return $i;
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}
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private function sheetXml(array $cells, int $maxRow, int $maxCol, array $widths = [], array $merges = [], int $headerRows = 1, array $cellStyles = []): string
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{
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$dim = 'A1:' . self::colName($maxCol) . $maxRow;
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$cols = '';
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for ($c = 1; $c <= $maxCol; $c++) {
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$w = $widths[$c - 1] ?? 16;
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$cols .= '<col min="' . $c . '" max="' . $c . '" width="' . $w . '" customWidth="1"/>';
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}
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// 合并区域的非首格不能带值（否则 Excel 打开会提示"修复"），
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// 但仍要写成「空值 + 带样式的格子」，否则合并区域的边框会在 Excel 里缺边。
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$swallowed = [];
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foreach ($merges as $m) {
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for ($r = $m[0]; $r <= $m[2]; $r++) {
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for ($c = $m[1]; $c <= $m[3]; $c++) {
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if ($r === $m[0] && $c === $m[1]) {
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continue;
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}
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$swallowed[$r][$c] = true;
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}
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}
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}
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$data = '';
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for ($r = 1; $r <= $maxRow; $r++) {
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$baseStyle = $r <= $headerRows ? self::S_HEADER : self::S_TEXT;
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$line = '';
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$has = false;
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for ($c = 1; $c <= $maxCol; $c++) {
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$sw = isset($swallowed[$r][$c]);
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if (!isset($cells[$r][$c]) && !$sw) {
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continue;
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}
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$has = true;
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$ref = self::colName($c) . $r;
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// 单元格级标记（红字 / 绿底）优先；合并区间跟随左上角首格的样式，
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// 否则"合并成一格但只有左边半截有底色"会很难看。
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$mark = $cellStyles[$r . ',' . $c] ?? null;
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if ($mark === null && $sw) {
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foreach ($merges as $m) {
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if ($r >= $m[0] && $r <= $m[2] && $c >= $m[1] && $c <= $m[3]) {
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$mark = $cellStyles[$m[0] . ',' . $m[1]] ?? null;
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break;
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}
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}
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}
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$style = ($mark !== null) ? (int)$mark : $baseStyle;
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if ($sw) {
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$line .= '<c r="' . $ref . '" s="' . $style . '"/>';
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} else {
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$line .= '<c r="' . $ref . '" s="' . $style . '" t="s"><v>' . $cells[$r][$c] . '</v></c>';
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}
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}
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if (!$has) {
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continue;
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}
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$data .= '<row r="' . $r . '" spans="1:' . $maxCol . '">' . $line . '</row>';
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}
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$mergeXml = '';
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if ($merges !== []) {
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$mergeXml = '<mergeCells count="' . count($merges) . '">';
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foreach ($merges as $m) {
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$mergeXml .= '<mergeCell ref="' . self::colName($m[1]) . $m[0] . ':' . self::colName($m[3]) . $m[2] . '"/>';
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}
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$mergeXml .= '</mergeCells>';
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}
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return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n" .
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'<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">' .
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'<dimension ref="' . $dim . '"/>' .
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'<sheetViews><sheetView workbookViewId="0"/></sheetViews>' .
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'<sheetFormatPr defaultRowHeight="13.5"/>' .
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($cols !== '' ? '<cols>' . $cols . '</cols>' : '') .
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'<sheetData>' . $data . '</sheetData>' .
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$mergeXml .
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'</worksheet>';
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}
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private function contentTypesXml(int $sheetCount): string
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{
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$overrides = '';
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for ($i = 1; $i <= max(1, $sheetCount); $i++) {
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$overrides .= '<Override PartName="/xl/worksheets/sheet' . $i . '.xml" ' .
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'ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml"/>';
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}
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return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n" .
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'<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">' .
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'<Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/>' .
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'<Default Extension="xml" ContentType="application/xml"/>' .
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'<Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml"/>' .
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$overrides .
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'<Override PartName="/xl/styles.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml"/>' .
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'<Override PartName="/xl/sharedStrings.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml"/>' .
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'<Override PartName="/docProps/core.xml" ContentType="application/vnd.openxmlformats-package.core-properties+xml"/>' .
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'<Override PartName="/docProps/app.xml" ContentType="application/vnd.openxmlformats-officedocument.extended-properties+xml"/>' .
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'</Types>';
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}
|
||
|
||
private function rootRelsXml(): string
|
||
{
|
||
return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n" .
|
||
'<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">' .
|
||
'<Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/>' .
|
||
'<Relationship Id="rId2" Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties" Target="docProps/core.xml"/>' .
|
||
'<Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties" Target="docProps/app.xml"/>' .
|
||
'</Relationships>';
|
||
}
|
||
|
||
/** @param array<int,string> $names 工作表名（已安全化） */
|
||
private function workbookXml(array $names): string
|
||
{
|
||
$sheets = '';
|
||
foreach (array_values($names) as $i => $nm) {
|
||
$n = (int)$i + 1;
|
||
$sheets .= '<sheet name="' . self::xml((string)$nm) . '" sheetId="' . $n . '" r:id="rId' . $n . '"/>';
|
||
}
|
||
return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n" .
|
||
'<workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" ' .
|
||
'xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships">' .
|
||
'<sheets>' . $sheets . '</sheets>' .
|
||
'</workbook>';
|
||
}
|
||
|
||
private function workbookRelsXml(int $sheetCount): string
|
||
{
|
||
$rels = '';
|
||
for ($i = 1; $i <= max(1, $sheetCount); $i++) {
|
||
$rels .= '<Relationship Id="rId' . $i . '" ' .
|
||
'Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" ' .
|
||
'Target="worksheets/sheet' . $i . '.xml"/>';
|
||
}
|
||
$stylesId = max(1, $sheetCount) + 1;
|
||
$sstId = max(1, $sheetCount) + 2;
|
||
return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n" .
|
||
'<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships">' .
|
||
$rels .
|
||
'<Relationship Id="rId' . $stylesId . '" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/>' .
|
||
'<Relationship Id="rId' . $sstId . '" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings" Target="sharedStrings.xml"/>' .
|
||
'</Relationships>';
|
||
}
|
||
|
||
private function stylesXml(): string
|
||
{
|
||
return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n" .
|
||
'<styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">' .
|
||
// numFmts: 49 = @（文本）
|
||
'<numFmts count="1"><numFmt numFmtId="49" formatCode="@"/></numFmts>' .
|
||
// 字体：0 常规 / 1 加粗（表头）/ 2 红色（最高分）/ 3 加粗绿字
|
||
'<fonts count="3">' .
|
||
'<font><sz val="11"/><color theme="1"/><name val="宋体"/><charset val="134"/></font>' .
|
||
'<font><b/><sz val="11"/><color theme="1"/><name val="宋体"/><charset val="134"/></font>' .
|
||
'<font><sz val="11"/><color rgb="FFD0021B"/><name val="宋体"/><charset val="134"/></font>' .
|
||
'</fonts>' .
|
||
// 填充：0 none / 1 gray125（Excel 约定占位）/ 2 合格绿底 / 3 表头绿底
|
||
// 绿色沿用导出截图里的浅绿 (#63C384 系)：既醒目又不至于盖住黑色文字
|
||
'<fills count="4">' .
|
||
'<fill><patternFill patternType="none"/></fill>' .
|
||
'<fill><patternFill patternType="gray125"/></fill>' .
|
||
'<fill><patternFill patternType="solid"><fgColor rgb="FF63C384"/><bgColor indexed="64"/></patternFill></fill>' .
|
||
'<fill><patternFill patternType="solid"><fgColor rgb="FF63C384"/><bgColor indexed="64"/></patternFill></fill>' .
|
||
'</fills>' .
|
||
// 0 = 无边框，1 = 细灰边框（表格统一描边，打印/截图都清晰）
|
||
'<borders count="2">' .
|
||
'<border><left/><right/><top/><bottom/><diagonal/></border>' .
|
||
'<border>' .
|
||
'<left style="thin"><color rgb="FF808080"/></left>' .
|
||
'<right style="thin"><color rgb="FF808080"/></right>' .
|
||
'<top style="thin"><color rgb="FF808080"/></top>' .
|
||
'<bottom style="thin"><color rgb="FF808080"/></bottom>' .
|
||
'<diagonal/></border>' .
|
||
'</borders>' .
|
||
'<cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0"/></cellStyleXfs>' .
|
||
'<cellXfs count="6">' .
|
||
'<xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0"/>' . // 0 常规
|
||
'<xf numFmtId="0" fontId="1" fillId="0" borderId="1" xfId="0" applyFont="1" applyBorder="1"><alignment horizontal="center" vertical="center"/></xf>' . // 1 表头
|
||
'<xf numFmtId="49" fontId="0" fillId="0" borderId="1" xfId="0" applyNumberFormat="1" applyBorder="1"><alignment vertical="center"/></xf>' . // 2 文本
|
||
'<xf numFmtId="49" fontId="2" fillId="0" borderId="1" xfId="0" applyNumberFormat="1" applyFont="1" applyBorder="1"><alignment horizontal="center" vertical="center"/></xf>' . // 3 红字（最高分）
|
||
'<xf numFmtId="49" fontId="0" fillId="2" borderId="1" xfId="0" applyNumberFormat="1" applyFill="1" applyBorder="1"><alignment horizontal="center" vertical="center"/></xf>' . // 4 绿底（合格次数达标）
|
||
'<xf numFmtId="0" fontId="1" fillId="3" borderId="1" xfId="0" applyFont="1" applyFill="1" applyBorder="1"><alignment horizontal="center" vertical="center"/></xf>' . // 5 表头绿底
|
||
'</cellXfs>' .
|
||
'<cellStyles count="1"><cellStyle name="常规" xfId="0" builtinId="0"/></cellStyles>' .
|
||
'</styleSheet>';
|
||
}
|
||
|
||
private function sharedStringsXml(): string
|
||
{
|
||
$unique = count($this->strings);
|
||
$total = array_sum($this->strCount);
|
||
$body = '';
|
||
foreach ($this->strings as $s) {
|
||
$body .= '<si><t xml:space="preserve">' . self::xml((string)$s) . '</t></si>';
|
||
}
|
||
return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n" .
|
||
'<sst xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" count="' . $total .
|
||
'" uniqueCount="' . $unique . '">' . $body . '</sst>';
|
||
}
|
||
|
||
private function coreXml(string $title): string
|
||
{
|
||
return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n" .
|
||
'<cp:coreProperties xmlns:cp="http://schemas.openxmlformats.org/package/2006/metadata/core-properties" ' .
|
||
'xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" ' .
|
||
'xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">' .
|
||
'<dc:title>' . self::xml($title) . '</dc:title>' .
|
||
'<dc:creator>NY问卷考试系统数据平台</dc:creator>' .
|
||
'<cp:lastModifiedBy>NY问卷考试系统数据平台</cp:lastModifiedBy>' .
|
||
'<dcterms:created xsi:type="dcterms:W3CDTF">' . gmdate('Y-m-d\TH:i:s\Z') . '</dcterms:created>' .
|
||
'<dcterms:modified xsi:type="dcterms:W3CDTF">' . gmdate('Y-m-d\TH:i:s\Z') . '</dcterms:modified>' .
|
||
'</cp:coreProperties>';
|
||
}
|
||
|
||
private function appXml(): string
|
||
{
|
||
return '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>' . "\n" .
|
||
'<Properties xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties" ' .
|
||
'xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes">' .
|
||
'<Application>NY Exam Platform</Application></Properties>';
|
||
}
|
||
|
||
/* ---------------- 内部：打包 ---------------- */
|
||
|
||
/** @param array<string,string> $files 相对路径 => 内容 */
|
||
private function zip(array $files): string
|
||
{
|
||
if (class_exists('ZipArchive')) {
|
||
$tmp = tempnam(sys_get_temp_dir(), 'nyx');
|
||
if ($tmp !== false) {
|
||
$zip = new ZipArchive();
|
||
if ($zip->open($tmp, ZipArchive::OVERWRITE) === true) {
|
||
foreach ($files as $name => $content) {
|
||
$zip->addFromString($name, $content);
|
||
}
|
||
$zip->close();
|
||
$bin = (string)@file_get_contents($tmp);
|
||
@unlink($tmp);
|
||
if ($bin !== '') {
|
||
return $bin;
|
||
}
|
||
}
|
||
@unlink($tmp);
|
||
}
|
||
}
|
||
return self::packManual($files);
|
||
}
|
||
|
||
/**
|
||
* 无 zip 扩展时的手写打包（stored，不压缩）
|
||
* 单独公开，便于在没有 ZipArchive 的环境下自检
|
||
*
|
||
* @param array<string,string> $files 相对路径 => 内容
|
||
*/
|
||
public static function packManual(array $files): string
|
||
{
|
||
$local = '';
|
||
$central = '';
|
||
$offset = 0;
|
||
$time = self::dosTime();
|
||
$date = self::dosDate();
|
||
|
||
foreach ($files as $name => $content) {
|
||
$nameBin = (string)$name;
|
||
$data = (string)$content;
|
||
$crc = crc32($data);
|
||
$len = strlen($data);
|
||
|
||
$local .= "\x50\x4b\x03\x04" . pack('vvvvvVVVvv', 20, 0x0800, 0, $time, $date, $crc, $len, $len, strlen($nameBin), 0) . $nameBin . $data;
|
||
$central .= "\x50\x4b\x01\x02" . pack('vvvvvvVVVvvvvvVV', 20, 20, 0x0800, 0, $time, $date, $crc, $len, $len, strlen($nameBin), 0, 0, 0, 0, 0, $offset) . $nameBin;
|
||
$offset += 30 + strlen($nameBin) + $len;
|
||
}
|
||
|
||
return $local . $central .
|
||
"\x50\x4b\x05\x06" . pack('vvvvVVv', 0, 0, count($files), count($files), strlen($central), $offset, 0);
|
||
}
|
||
|
||
private static function dosTime(): int
|
||
{
|
||
$t = getdate();
|
||
return ($t['hours'] << 11) | ($t['minutes'] << 5) | (intdiv($t['seconds'], 2) & 0x1f);
|
||
}
|
||
|
||
private static function dosDate(): int
|
||
{
|
||
$t = getdate();
|
||
return (($t['year'] - 1980) << 9) | ($t['mon'] << 5) | $t['mday'];
|
||
}
|
||
|
||
/* ---------------- 工具 ---------------- */
|
||
|
||
private static function xml(string $s): string
|
||
{
|
||
return htmlspecialchars($s, ENT_XML1 | ENT_COMPAT, 'UTF-8');
|
||
}
|
||
|
||
/** 列序号(1基) => A / B / ... / AA */
|
||
private static function colName(int $n): string
|
||
{
|
||
$s = '';
|
||
while ($n > 0) {
|
||
$m = ($n - 1) % 26;
|
||
$s = chr(65 + $m) . $s;
|
||
$n = intdiv($n - 1, 26);
|
||
}
|
||
return $s ?: 'A';
|
||
}
|
||
}
|