42 lines
2.4 KiB
TypeScript
42 lines
2.4 KiB
TypeScript
// Which folders a project walk (scan, check's privacy manifests) leaves out, beyond each walker's own name list:
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// - dot folders below the root (.harness-worktrees, .wt-head, .ota-out, .native-build, ...): tool state, caches and
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// whole copies of the repo, never app sources;
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// - linked git worktrees (another checkout of the same repo);
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// - folders git ignores at the root (release-out/, artifacts/, ...), asked once per root with
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// `git ls-files --others --ignored --exclude-standard --directory`; SDK folders the privacy checks read (Pods,
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// Carthage, SourcePackages) and generated native projects (ios, android) stay in even when ignored.
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// Seen live: a game repo with several worktrees and release folders made `check` walk ~60 000 files for 2.5 minutes.
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import { readFileSync } from 'node:fs';
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import { join, relative, resolve, sep } from 'node:path';
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import * as rt from './rt';
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// kept even when git ignores them: SDK folders the privacy checks read, and generated native projects (Expo prebuild)
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const KEEP = new Set(['Pods', 'Carthage', 'SourcePackages', 'ios', 'android', 'macos']);
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const cache = new Map<string, Set<string>>();
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/** A linked git worktree: its .git is a file pointing into <repo>/.git/worktrees/ (a submodule's points into modules/). */
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export function isWorktree(dir: string): boolean {
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try { return /^gitdir:.*[\\/]worktrees[\\/]/m.test(readFileSync(join(dir, '.git'), 'utf8')); } catch { return false; }
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}
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/** Root-relative folders (with "/" separators, no trailing slash) git ignores in this repo; empty outside git. */
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export function gitIgnoredDirs(root: string): Set<string> {
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const key = resolve(root);
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const hit = cache.get(key);
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if (hit) return hit;
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const out = new Set<string>();
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try {
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const r = rt.spawnSync(['git', 'ls-files', '--others', '--ignored', '--exclude-standard', '--directory', '-z'], { cwd: key, timeout: 15_000 });
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if (r.success) for (const p of r.stdout.toString('utf8').split('\0')) if (p.endsWith('/')) out.add(p.slice(0, -1));
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} catch { /* no git */ }
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cache.set(key, out);
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return out;
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}
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/** Leave this folder out of a walk that started at root? */
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export function skipDir(root: string, abs: string, name: string): boolean {
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if (KEEP.has(name)) return false;
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if (name.startsWith('.') && resolve(abs) !== resolve(root)) return true;
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if (gitIgnoredDirs(root).has(relative(root, abs).split(sep).join('/'))) return true;
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return isWorktree(abs);
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}
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