118 lines
3.8 KiB
JavaScript
118 lines
3.8 KiB
JavaScript
export function normalizeRelativePath(value) {
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if (typeof value !== "string") {
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throw new TypeError("文件路径必须是字符串");
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}
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let path = value.trim().replaceAll("\\", "/");
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try {
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path = decodeURIComponent(path);
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} catch {
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// Keep the original path when it contains a literal percent sign.
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}
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path = path.replace(/^file:\/\/+/, "").replace(/^\.\//, "");
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if (!path || path.includes("\0") || path.startsWith("/") || /^[A-Za-z]:\//.test(path)) {
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throw new Error(`不允许的绝对路径：${value}`);
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}
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const parts = [];
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for (const part of path.split("/")) {
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if (!part || part === ".") continue;
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if (part === "..") throw new Error(`不允许越过项目目录：${value}`);
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parts.push(part);
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}
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if (parts.length === 0) throw new Error(`无效文件路径：${value}`);
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return parts.join("/");
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}
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export function dirname(path) {
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const normalized = normalizeRelativePath(path);
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const index = normalized.lastIndexOf("/");
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return index === -1 ? "" : normalized.slice(0, index);
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}
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export function basename(path) {
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const normalized = normalizeRelativePath(path);
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return normalized.slice(normalized.lastIndexOf("/") + 1);
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}
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export function joinDeckPath(base, path) {
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const child = normalizeRelativePath(path);
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if (!base) return child;
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const normalizedBase = normalizeRelativePath(base);
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if (child === normalizedBase || child.startsWith(`${normalizedBase}/`)) return child;
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return normalizeRelativePath(`${normalizedBase}/${child}`);
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}
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function unquoteYamlScalar(value) {
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const text = value.trim();
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if (text.startsWith('"')) {
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const match = text.match(/^"(?:\\.|[^"\\])*"/);
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if (match) {
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try {
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return JSON.parse(match[0]);
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} catch {
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return match[0].slice(1, -1);
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}
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}
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}
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if (text.startsWith("'")) {
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const end = text.indexOf("'", 1);
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if (end !== -1) return text.slice(1, end).replaceAll("''", "'");
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}
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return text.replace(/\s+#.*$/, "").trim();
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}
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export function extractPagePaths(manifestText) {
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const trimmed = manifestText.trim();
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if (!trimmed) throw new Error("PPTD manifest 是空文件");
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if (trimmed.startsWith("{")) {
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const parsed = JSON.parse(trimmed);
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if (!Array.isArray(parsed.pages)) throw new Error("PPTD manifest 缺少 pages 数组");
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return parsed.pages.map((path) => normalizeRelativePath(String(path)));
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}
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const lines = manifestText.replaceAll("\r\n", "\n").split("\n");
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const pageHeader = lines.findIndex((line) => /^(\s*)pages\s*:\s*(?:#.*)?$/.test(line));
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if (pageHeader === -1) throw new Error("PPTD manifest 缺少 pages 列表");
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const headerIndent = lines[pageHeader].match(/^\s*/)[0].length;
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const pages = [];
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for (let index = pageHeader + 1; index < lines.length; index += 1) {
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const line = lines[index];
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if (!line.trim() || line.trimStart().startsWith("#")) continue;
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const indent = line.match(/^\s*/)[0].length;
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if (indent <= headerIndent && !/^\s*-/.test(line)) break;
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const match = line.match(/^\s*-\s*(.+?)\s*$/);
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if (!match) break;
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const path = unquoteYamlScalar(match[1]);
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if (path) pages.push(normalizeRelativePath(path));
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}
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if (pages.length === 0) throw new Error("PPTD manifest 的 pages 列表为空");
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return pages;
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}
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export function titleFromManifest(manifestText, fallback) {
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const trimmed = manifestText.trim();
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if (trimmed.startsWith("{")) {
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try {
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return JSON.parse(trimmed).title || fallback;
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} catch {
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return fallback;
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}
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}
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const match = manifestText.match(/^title\s*:\s*(.+?)\s*$/m);
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return match ? unquoteYamlScalar(match[1]) : fallback;
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}
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export function assertWritableChangePath(base, requestedPath) {
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const path = joinDeckPath(base, requestedPath);
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if (!/\.(?:pptd|page)$/i.test(path)) {
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throw new Error(`为安全起见，仅允许编辑 .pptd/.page：${requestedPath}`);
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}
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return path;
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}
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