64 lines
1.6 KiB
TypeScript
64 lines
1.6 KiB
TypeScript
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import { createHash } from "crypto"
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import { relative } from "node:path"
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import picomatch from "picomatch"
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import type { RuleMetadata } from "./types"
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export interface MatchResult {
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applies: boolean
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reason?: string
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}
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/**
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* Check if a rule should apply to the current file based on metadata
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*/
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export function shouldApplyRule(
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metadata: RuleMetadata,
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currentFilePath: string,
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projectRoot: string | null
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): MatchResult {
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if (metadata.alwaysApply === true) {
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return { applies: true, reason: "alwaysApply" }
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}
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const globs = metadata.globs
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if (!globs) {
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return { applies: false }
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}
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const patterns = Array.isArray(globs) ? globs : [globs]
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if (patterns.length === 0) {
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return { applies: false }
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}
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const relativePath = projectRoot ? relative(projectRoot, currentFilePath) : currentFilePath
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for (const pattern of patterns) {
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if (picomatch.isMatch(relativePath, pattern, { dot: true, bash: true })) {
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return { applies: true, reason: `glob: ${pattern}` }
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}
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}
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return { applies: false }
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}
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/**
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* Check if realPath already exists in cache (symlink deduplication)
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*/
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export function isDuplicateByRealPath(realPath: string, cache: Set<string>): boolean {
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return cache.has(realPath)
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}
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/**
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* Create SHA-256 hash of content, truncated to 16 chars
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*/
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export function createContentHash(content: string): string {
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return createHash("sha256").update(content).digest("hex").slice(0, 16)
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}
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/**
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* Check if content hash already exists in cache
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*/
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export function isDuplicateByContentHash(hash: string, cache: Set<string>): boolean {
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return cache.has(hash)
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}
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