refactor(rules-injector): split finder.ts into rule discovery modules
Extract rule finding logic: - project-root-finder.ts: project root detection - rule-file-finder.ts: rule file discovery - rule-file-scanner.ts: filesystem scanning for rules - rule-distance.ts: rule-to-file distance calculation
This commit is contained in:
YeonGyu-Kim
parent
c2efdb4334
commit
2d22a54b55
@ -1,263 +1,3 @@
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import {
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export { findProjectRoot } from "./project-root-finder";
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existsSync,
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export { calculateDistance } from "./rule-distance";
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readdirSync,
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export { findRuleFiles } from "./rule-file-finder";
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realpathSync,
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statSync,
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} from "node:fs";
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import { dirname, join, relative } from "node:path";
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import {
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GITHUB_INSTRUCTIONS_PATTERN,
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PROJECT_MARKERS,
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PROJECT_RULE_FILES,
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PROJECT_RULE_SUBDIRS,
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RULE_EXTENSIONS,
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USER_RULE_DIR,
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} from "./constants";
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import type { RuleFileCandidate } from "./types";
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function isGitHubInstructionsDir(dir: string): boolean {
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return dir.includes(".github/instructions") || dir.endsWith(".github/instructions");
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}
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function isValidRuleFile(fileName: string, dir: string): boolean {
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if (isGitHubInstructionsDir(dir)) {
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return GITHUB_INSTRUCTIONS_PATTERN.test(fileName);
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}
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return RULE_EXTENSIONS.some((ext) => fileName.endsWith(ext));
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}
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/**
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* Find project root by walking up from startPath.
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* Checks for PROJECT_MARKERS (.git, pyproject.toml, package.json, etc.)
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*
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* @param startPath - Starting path to search from (file or directory)
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* @returns Project root path or null if not found
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*/
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export function findProjectRoot(startPath: string): string | null {
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let current: string;
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try {
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const stat = statSync(startPath);
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current = stat.isDirectory() ? startPath : dirname(startPath);
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} catch {
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current = dirname(startPath);
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}
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while (true) {
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for (const marker of PROJECT_MARKERS) {
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const markerPath = join(current, marker);
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if (existsSync(markerPath)) {
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return current;
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}
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}
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const parent = dirname(current);
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if (parent === current) {
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return null;
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}
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current = parent;
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}
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}
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/**
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* Recursively find all rule files (*.md, *.mdc) in a directory
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*
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* @param dir - Directory to search
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* @param results - Array to accumulate results
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*/
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function findRuleFilesRecursive(dir: string, results: string[]): void {
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if (!existsSync(dir)) return;
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try {
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const entries = readdirSync(dir, { withFileTypes: true });
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for (const entry of entries) {
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const fullPath = join(dir, entry.name);
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if (entry.isDirectory()) {
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findRuleFilesRecursive(fullPath, results);
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} else if (entry.isFile()) {
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if (isValidRuleFile(entry.name, dir)) {
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results.push(fullPath);
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}
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}
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}
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} catch {
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// Permission denied or other errors - silently skip
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}
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}
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/**
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* Resolve symlinks safely with fallback to original path
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*
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* @param filePath - Path to resolve
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* @returns Real path or original path if resolution fails
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*/
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function safeRealpathSync(filePath: string): string {
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try {
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return realpathSync(filePath);
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} catch {
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return filePath;
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}
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}
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/**
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* Calculate directory distance between a rule file and current file.
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* Distance is based on common ancestor within project root.
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*
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* @param rulePath - Path to the rule file
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* @param currentFile - Path to the current file being edited
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* @param projectRoot - Project root for relative path calculation
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* @returns Distance (0 = same directory, higher = further)
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*/
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export function calculateDistance(
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rulePath: string,
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currentFile: string,
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projectRoot: string | null,
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): number {
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if (!projectRoot) {
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return 9999;
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}
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try {
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const ruleDir = dirname(rulePath);
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const currentDir = dirname(currentFile);
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const ruleRel = relative(projectRoot, ruleDir);
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const currentRel = relative(projectRoot, currentDir);
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// Handle paths outside project root
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if (ruleRel.startsWith("..") || currentRel.startsWith("..")) {
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return 9999;
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}
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// Split by both forward and back slashes for cross-platform compatibility
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// path.relative() returns OS-native separators (backslashes on Windows)
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const ruleParts = ruleRel ? ruleRel.split(/[/\\]/) : [];
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const currentParts = currentRel ? currentRel.split(/[/\\]/) : [];
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// Find common prefix length
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let common = 0;
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for (let i = 0; i < Math.min(ruleParts.length, currentParts.length); i++) {
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if (ruleParts[i] === currentParts[i]) {
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common++;
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} else {
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break;
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}
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}
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// Distance is how many directories up from current file to common ancestor
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return currentParts.length - common;
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} catch {
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return 9999;
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}
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}
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/**
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* Find all rule files for a given context.
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* Searches from currentFile upward to projectRoot for rule directories,
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* then user-level directory (~/.claude/rules).
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*
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* IMPORTANT: This searches EVERY directory from file to project root.
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* Not just the project root itself.
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*
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* @param projectRoot - Project root path (or null if outside any project)
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* @param homeDir - User home directory
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* @param currentFile - Current file being edited (for distance calculation)
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* @returns Array of rule file candidates sorted by distance
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*/
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export function findRuleFiles(
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projectRoot: string | null,
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homeDir: string,
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currentFile: string,
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): RuleFileCandidate[] {
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const candidates: RuleFileCandidate[] = [];
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const seenRealPaths = new Set<string>();
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// Search from current file's directory up to project root
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let currentDir = dirname(currentFile);
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let distance = 0;
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while (true) {
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// Search rule directories in current directory
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for (const [parent, subdir] of PROJECT_RULE_SUBDIRS) {
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const ruleDir = join(currentDir, parent, subdir);
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const files: string[] = [];
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findRuleFilesRecursive(ruleDir, files);
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for (const filePath of files) {
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const realPath = safeRealpathSync(filePath);
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if (seenRealPaths.has(realPath)) continue;
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seenRealPaths.add(realPath);
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candidates.push({
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path: filePath,
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realPath,
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isGlobal: false,
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distance,
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});
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}
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}
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// Stop at project root or filesystem root
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if (projectRoot && currentDir === projectRoot) break;
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const parentDir = dirname(currentDir);
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if (parentDir === currentDir) break;
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currentDir = parentDir;
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distance++;
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}
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// Check for single-file rules at project root (e.g., .github/copilot-instructions.md)
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if (projectRoot) {
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for (const ruleFile of PROJECT_RULE_FILES) {
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const filePath = join(projectRoot, ruleFile);
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if (existsSync(filePath)) {
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try {
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const stat = statSync(filePath);
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if (stat.isFile()) {
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const realPath = safeRealpathSync(filePath);
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if (!seenRealPaths.has(realPath)) {
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seenRealPaths.add(realPath);
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candidates.push({
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path: filePath,
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realPath,
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isGlobal: false,
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distance: 0,
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isSingleFile: true,
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});
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}
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}
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} catch {
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// Skip if file can't be read
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}
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}
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}
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}
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// Search user-level rule directory (~/.claude/rules)
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const userRuleDir = join(homeDir, USER_RULE_DIR);
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const userFiles: string[] = [];
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findRuleFilesRecursive(userRuleDir, userFiles);
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for (const filePath of userFiles) {
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const realPath = safeRealpathSync(filePath);
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if (seenRealPaths.has(realPath)) continue;
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seenRealPaths.add(realPath);
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candidates.push({
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path: filePath,
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realPath,
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isGlobal: true,
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distance: 9999, // Global rules always have max distance
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});
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}
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// Sort by distance (closest first, then global rules last)
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candidates.sort((a, b) => {
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if (a.isGlobal !== b.isGlobal) {
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return a.isGlobal ? 1 : -1;
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}
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return a.distance - b.distance;
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});
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return candidates;
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}
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@ -1 +1,2 @@
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export { createRulesInjectorHook } from "./hook";
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export { createRulesInjectorHook } from "./hook";
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export { calculateDistance, findProjectRoot, findRuleFiles } from "./finder";
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36
src/hooks/rules-injector/project-root-finder.ts
Normal file
36
src/hooks/rules-injector/project-root-finder.ts
Normal file
@ -0,0 +1,36 @@
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import { existsSync, statSync } from "node:fs";
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import { dirname, join } from "node:path";
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import { PROJECT_MARKERS } from "./constants";
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/**
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* Find project root by walking up from startPath.
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* Checks for PROJECT_MARKERS (.git, pyproject.toml, package.json, etc.)
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*
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* @param startPath - Starting path to search from (file or directory)
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* @returns Project root path or null if not found
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*/
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export function findProjectRoot(startPath: string): string | null {
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let current: string;
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try {
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const stat = statSync(startPath);
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current = stat.isDirectory() ? startPath : dirname(startPath);
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} catch {
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current = dirname(startPath);
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}
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while (true) {
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for (const marker of PROJECT_MARKERS) {
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const markerPath = join(current, marker);
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if (existsSync(markerPath)) {
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return current;
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}
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}
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const parent = dirname(current);
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if (parent === current) {
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return null;
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}
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current = parent;
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}
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}
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53
src/hooks/rules-injector/rule-distance.ts
Normal file
53
src/hooks/rules-injector/rule-distance.ts
Normal file
@ -0,0 +1,53 @@
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import { dirname, relative } from "node:path";
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/**
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* Calculate directory distance between a rule file and current file.
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* Distance is based on common ancestor within project root.
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*
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* @param rulePath - Path to the rule file
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* @param currentFile - Path to the current file being edited
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* @param projectRoot - Project root for relative path calculation
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* @returns Distance (0 = same directory, higher = further)
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*/
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export function calculateDistance(
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rulePath: string,
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currentFile: string,
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projectRoot: string | null,
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): number {
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if (!projectRoot) {
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return 9999;
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}
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try {
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const ruleDir = dirname(rulePath);
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const currentDir = dirname(currentFile);
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const ruleRel = relative(projectRoot, ruleDir);
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const currentRel = relative(projectRoot, currentDir);
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// Handle paths outside project root
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if (ruleRel.startsWith("..") || currentRel.startsWith("..")) {
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return 9999;
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}
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// Split by both forward and back slashes for cross-platform compatibility
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// path.relative() returns OS-native separators (backslashes on Windows)
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const ruleParts = ruleRel ? ruleRel.split(/[/\\]/) : [];
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const currentParts = currentRel ? currentRel.split(/[/\\]/) : [];
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// Find common prefix length
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let common = 0;
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for (let i = 0; i < Math.min(ruleParts.length, currentParts.length); i++) {
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if (ruleParts[i] === currentParts[i]) {
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common++;
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} else {
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break;
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}
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}
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// Distance is how many directories up from current file to common ancestor
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return currentParts.length - common;
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} catch {
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return 9999;
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}
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}
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119
src/hooks/rules-injector/rule-file-finder.ts
Normal file
119
src/hooks/rules-injector/rule-file-finder.ts
Normal file
@ -0,0 +1,119 @@
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import { existsSync, statSync } from "node:fs";
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import { dirname, join } from "node:path";
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import {
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PROJECT_RULE_FILES,
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PROJECT_RULE_SUBDIRS,
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USER_RULE_DIR,
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} from "./constants";
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import type { RuleFileCandidate } from "./types";
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import { findRuleFilesRecursive, safeRealpathSync } from "./rule-file-scanner";
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|
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/**
|
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|
* Find all rule files for a given context.
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|
* Searches from currentFile upward to projectRoot for rule directories,
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|
* then user-level directory (~/.claude/rules).
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|
*
|
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|
* IMPORTANT: This searches EVERY directory from file to project root.
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|
* Not just the project root itself.
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|
*
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|
* @param projectRoot - Project root path (or null if outside any project)
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|
* @param homeDir - User home directory
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* @param currentFile - Current file being edited (for distance calculation)
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* @returns Array of rule file candidates sorted by distance
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*/
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export function findRuleFiles(
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|
projectRoot: string | null,
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|
homeDir: string,
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|
currentFile: string,
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|
): RuleFileCandidate[] {
|
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|
const candidates: RuleFileCandidate[] = [];
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|
const seenRealPaths = new Set<string>();
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|
|
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|
// Search from current file's directory up to project root
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|
let currentDir = dirname(currentFile);
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|
let distance = 0;
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|
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|
while (true) {
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|
// Search rule directories in current directory
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|
for (const [parent, subdir] of PROJECT_RULE_SUBDIRS) {
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const ruleDir = join(currentDir, parent, subdir);
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const files: string[] = [];
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||||||
|
findRuleFilesRecursive(ruleDir, files);
|
||||||
|
|
||||||
|
for (const filePath of files) {
|
||||||
|
const realPath = safeRealpathSync(filePath);
|
||||||
|
if (seenRealPaths.has(realPath)) continue;
|
||||||
|
seenRealPaths.add(realPath);
|
||||||
|
|
||||||
|
candidates.push({
|
||||||
|
path: filePath,
|
||||||
|
realPath,
|
||||||
|
isGlobal: false,
|
||||||
|
distance,
|
||||||
|
});
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Stop at project root or filesystem root
|
||||||
|
if (projectRoot && currentDir === projectRoot) break;
|
||||||
|
const parentDir = dirname(currentDir);
|
||||||
|
if (parentDir === currentDir) break;
|
||||||
|
currentDir = parentDir;
|
||||||
|
distance++;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Check for single-file rules at project root (e.g., .github/copilot-instructions.md)
|
||||||
|
if (projectRoot) {
|
||||||
|
for (const ruleFile of PROJECT_RULE_FILES) {
|
||||||
|
const filePath = join(projectRoot, ruleFile);
|
||||||
|
if (existsSync(filePath)) {
|
||||||
|
try {
|
||||||
|
const stat = statSync(filePath);
|
||||||
|
if (stat.isFile()) {
|
||||||
|
const realPath = safeRealpathSync(filePath);
|
||||||
|
if (!seenRealPaths.has(realPath)) {
|
||||||
|
seenRealPaths.add(realPath);
|
||||||
|
candidates.push({
|
||||||
|
path: filePath,
|
||||||
|
realPath,
|
||||||
|
isGlobal: false,
|
||||||
|
distance: 0,
|
||||||
|
isSingleFile: true,
|
||||||
|
});
|
||||||
|
}
|
||||||
|
}
|
||||||
|
} catch {
|
||||||
|
// Skip if file can't be read
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Search user-level rule directory (~/.claude/rules)
|
||||||
|
const userRuleDir = join(homeDir, USER_RULE_DIR);
|
||||||
|
const userFiles: string[] = [];
|
||||||
|
findRuleFilesRecursive(userRuleDir, userFiles);
|
||||||
|
|
||||||
|
for (const filePath of userFiles) {
|
||||||
|
const realPath = safeRealpathSync(filePath);
|
||||||
|
if (seenRealPaths.has(realPath)) continue;
|
||||||
|
seenRealPaths.add(realPath);
|
||||||
|
|
||||||
|
candidates.push({
|
||||||
|
path: filePath,
|
||||||
|
realPath,
|
||||||
|
isGlobal: true,
|
||||||
|
distance: 9999, // Global rules always have max distance
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
// Sort by distance (closest first, then global rules last)
|
||||||
|
candidates.sort((a, b) => {
|
||||||
|
if (a.isGlobal !== b.isGlobal) {
|
||||||
|
return a.isGlobal ? 1 : -1;
|
||||||
|
}
|
||||||
|
return a.distance - b.distance;
|
||||||
|
});
|
||||||
|
|
||||||
|
return candidates;
|
||||||
|
}
|
||||||
55
src/hooks/rules-injector/rule-file-scanner.ts
Normal file
55
src/hooks/rules-injector/rule-file-scanner.ts
Normal file
@ -0,0 +1,55 @@
|
|||||||
|
import { existsSync, readdirSync, realpathSync } from "node:fs";
|
||||||
|
import { join } from "node:path";
|
||||||
|
import { GITHUB_INSTRUCTIONS_PATTERN, RULE_EXTENSIONS } from "./constants";
|
||||||
|
|
||||||
|
function isGitHubInstructionsDir(dir: string): boolean {
|
||||||
|
return dir.includes(".github/instructions") || dir.endsWith(".github/instructions");
|
||||||
|
}
|
||||||
|
|
||||||
|
function isValidRuleFile(fileName: string, dir: string): boolean {
|
||||||
|
if (isGitHubInstructionsDir(dir)) {
|
||||||
|
return GITHUB_INSTRUCTIONS_PATTERN.test(fileName);
|
||||||
|
}
|
||||||
|
return RULE_EXTENSIONS.some((ext) => fileName.endsWith(ext));
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Recursively find all rule files (*.md, *.mdc) in a directory
|
||||||
|
*
|
||||||
|
* @param dir - Directory to search
|
||||||
|
* @param results - Array to accumulate results
|
||||||
|
*/
|
||||||
|
export function findRuleFilesRecursive(dir: string, results: string[]): void {
|
||||||
|
if (!existsSync(dir)) return;
|
||||||
|
|
||||||
|
try {
|
||||||
|
const entries = readdirSync(dir, { withFileTypes: true });
|
||||||
|
for (const entry of entries) {
|
||||||
|
const fullPath = join(dir, entry.name);
|
||||||
|
|
||||||
|
if (entry.isDirectory()) {
|
||||||
|
findRuleFilesRecursive(fullPath, results);
|
||||||
|
} else if (entry.isFile()) {
|
||||||
|
if (isValidRuleFile(entry.name, dir)) {
|
||||||
|
results.push(fullPath);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
} catch {
|
||||||
|
// Permission denied or other errors - silently skip
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Resolve symlinks safely with fallback to original path
|
||||||
|
*
|
||||||
|
* @param filePath - Path to resolve
|
||||||
|
* @returns Real path or original path if resolution fails
|
||||||
|
*/
|
||||||
|
export function safeRealpathSync(filePath: string): string {
|
||||||
|
try {
|
||||||
|
return realpathSync(filePath);
|
||||||
|
} catch {
|
||||||
|
return filePath;
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
x
Reference in New Issue
Block a user