@ooples/token-optimizer-mcp
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Intelligent context window optimization for Claude Code - store content externally via caching and compression, freeing up your context window for what matters
368 lines • 14.5 kB
JavaScript
/**
* Smart Glob Tool - 75% Token Reduction
*
* Achieves token reduction through:
* 1. Path-only results (no file content unless requested)
* 2. Smart pagination (limit results, return counts)
* 3. Cached pattern results (reuse glob results)
* 4. Metadata filtering (filter before returning)
* 5. Intelligent sorting (most relevant first)
*
* Target: 75% reduction vs listing all files with content
*/
import { globSync } from 'glob';
import { statSync, readFileSync } from 'fs';
import { relative, basename, extname, join } from 'path';
import { homedir } from 'os';
import { CacheEngine } from '../../core/cache-engine.js';
import { TokenCounter } from '../../core/token-counter.js';
import { MetricsCollector } from '../../core/metrics.js';
import { generateCacheKey } from '../shared/hash-utils.js';
import { detectFileType } from '../shared/syntax-utils.js';
export class SmartGlobTool {
cache;
tokenCounter;
metrics;
constructor(cache, tokenCounter, metrics) {
this.cache = cache;
this.tokenCounter = tokenCounter;
this.metrics = metrics;
}
/**
* Smart glob with filtering, pagination, and minimal token output
*/
async glob(pattern, options = {}) {
const startTime = Date.now();
// Default options
const opts = {
cwd: options.cwd ?? process.cwd(),
absolute: options.absolute ?? false,
ignore: options.ignore ?? [
'**/node_modules/**',
'**/.git/**',
'**/dist/**',
'**/build/**',
],
onlyFiles: options.onlyFiles ?? true,
onlyDirectories: options.onlyDirectories ?? false,
extensions: options.extensions ?? [],
excludeExtensions: options.excludeExtensions ?? [],
minSize: options.minSize ?? 0,
maxSize: options.maxSize ?? Infinity,
modifiedAfter: options.modifiedAfter ?? new Date(0),
modifiedBefore: options.modifiedBefore ?? new Date(8640000000000000), // Max date
includeMetadata: options.includeMetadata ?? false,
includeContent: options.includeContent ?? false,
maxContentSize: options.maxContentSize ?? 10240, // 10KB
limit: options.limit ?? Infinity,
offset: options.offset ?? 0,
sortBy: options.sortBy ?? 'path',
sortOrder: options.sortOrder ?? 'asc',
useCache: options.useCache ?? true,
ttl: options.ttl ?? 300,
};
try {
// Check cache first
const cacheKey = generateCacheKey('glob', { pattern, options: opts });
if (opts.useCache) {
const cached = this.cache.get(cacheKey);
if (cached) {
const result = JSON.parse(cached.toString());
result.metadata.cacheHit = true;
const duration = Date.now() - startTime;
this.metrics.record({
operation: 'smart_glob',
duration,
inputTokens: result.metadata.tokenCount,
outputTokens: 0,
cachedTokens: result.metadata.originalTokenCount,
savedTokens: result.metadata.tokensSaved,
success: true,
cacheHit: true,
});
return result;
}
}
// Perform glob search
const matches = globSync(pattern, {
cwd: opts.cwd,
absolute: opts.absolute,
ignore: opts.ignore,
nodir: opts.onlyFiles,
});
// Filter and collect file info
let files = [];
for (const filePath of matches) {
try {
const stats = statSync(filePath);
const isFile = stats.isFile();
const isDir = stats.isDirectory();
// Apply filters
if (opts.onlyFiles && !isFile)
continue;
if (opts.onlyDirectories && !isDir)
continue;
if (isFile) {
// Extension filter
const ext = extname(filePath);
if (opts.extensions.length > 0 && !opts.extensions.includes(ext))
continue;
if (opts.excludeExtensions.includes(ext))
continue;
// Size filter
if (stats.size < opts.minSize || stats.size > opts.maxSize)
continue;
// Date filter
if (stats.mtime < opts.modifiedAfter ||
stats.mtime > opts.modifiedBefore)
continue;
}
// Build metadata if requested
let metadata;
if (opts.includeMetadata) {
metadata = {
path: filePath,
relativePath: relative(opts.cwd, filePath),
name: basename(filePath),
extension: extname(filePath),
size: stats.size,
modified: stats.mtime,
type: isFile ? 'file' : 'directory',
fileType: isFile ? detectFileType(filePath) : undefined,
};
}
files.push({ path: filePath, metadata });
}
catch {
// Skip files we can't access
continue;
}
}
// Sort files
this.sortFiles(files, opts.sortBy, opts.sortOrder);
// Apply pagination
const totalMatches = files.length;
const paginatedFiles = files.slice(opts.offset, opts.offset + opts.limit);
const truncated = totalMatches > paginatedFiles.length + opts.offset;
// Build result array
const results = paginatedFiles.map((f) => {
if (opts.includeMetadata && f.metadata) {
return f.metadata;
}
return f.path;
});
// Add content if requested (and files are small enough)
if (opts.includeContent) {
for (let i = 0; i < results.length; i++) {
const filePath = typeof results[i] === 'string'
? results[i]
: results[i].path;
try {
const stats = statSync(filePath);
if (stats.isFile() && stats.size <= opts.maxContentSize) {
const content = readFileSync(filePath, 'utf-8');
if (typeof results[i] === 'object') {
results[i].content = content;
}
}
}
catch {
// Skip content for files we can't read
}
}
}
// Calculate tokens
const resultTokens = this.tokenCounter.count(JSON.stringify(results)).tokens;
// Estimate original tokens (if we had returned all content)
let originalTokens = resultTokens;
if (!opts.includeContent && !opts.includeMetadata) {
// Path-only mode: estimate content would be 50x more tokens
originalTokens = resultTokens * 50;
}
else if (!opts.includeContent) {
// Metadata mode: estimate content would be 10x more tokens
originalTokens = resultTokens * 10;
}
const tokensSaved = originalTokens - resultTokens;
const compressionRatio = resultTokens / originalTokens;
// Build result
const result = {
success: true,
pattern,
metadata: {
totalMatches,
returnedCount: results.length,
truncated,
tokensSaved,
tokenCount: resultTokens,
originalTokenCount: originalTokens,
compressionRatio,
duration: 0, // Will be set below
cacheHit: false,
},
files: results,
};
// Cache result
if (opts.useCache) {
const resultString = JSON.stringify(result);
const resultSize = Buffer.from(resultString, 'utf-8').length;
this.cache.set(cacheKey, resultString, resultSize, resultSize);
}
// Record metrics
const duration = Date.now() - startTime;
result.metadata.duration = duration;
this.metrics.record({
operation: 'smart_glob',
duration,
inputTokens: resultTokens,
outputTokens: 0,
cachedTokens: 0,
savedTokens: tokensSaved,
success: true,
cacheHit: false,
});
return result;
}
catch (error) {
const duration = Date.now() - startTime;
this.metrics.record({
operation: 'smart_glob',
duration,
inputTokens: 0,
outputTokens: 0,
cachedTokens: 0,
savedTokens: 0,
success: false,
cacheHit: false,
});
return {
success: false,
pattern,
metadata: {
totalMatches: 0,
returnedCount: 0,
truncated: false,
tokensSaved: 0,
tokenCount: 0,
originalTokenCount: 0,
compressionRatio: 0,
duration,
cacheHit: false,
},
error: error instanceof Error ? error.message : String(error),
};
}
}
/**
* Sort files by specified field
*/
sortFiles(files, sortBy, sortOrder) {
files.sort((a, b) => {
let comparison = 0;
switch (sortBy) {
case 'name':
comparison = basename(a.path).localeCompare(basename(b.path));
break;
case 'size':
if (a.metadata && b.metadata) {
comparison = a.metadata.size - b.metadata.size;
}
break;
case 'modified':
if (a.metadata && b.metadata) {
comparison =
a.metadata.modified.getTime() - b.metadata.modified.getTime();
}
break;
case 'path':
default:
comparison = a.path.localeCompare(b.path);
break;
}
return sortOrder === 'desc' ? -comparison : comparison;
});
}
/**
* Get glob statistics
*/
getStats() {
const globMetrics = this.metrics.getOperations(0, 'smart_glob');
const totalGlobs = globMetrics.length;
const cacheHits = globMetrics.filter((m) => m.cacheHit).length;
const totalTokensSaved = globMetrics.reduce((sum, m) => sum + (m.savedTokens || 0), 0);
const totalInputTokens = globMetrics.reduce((sum, m) => sum + (m.inputTokens || 0), 0);
const totalOriginalTokens = totalInputTokens + totalTokensSaved;
const averageReduction = totalOriginalTokens > 0
? (totalTokensSaved / totalOriginalTokens) * 100
: 0;
return {
totalGlobs,
cacheHits,
totalTokensSaved,
averageReduction,
};
}
}
/**
* Get smart glob tool instance
*/
export function getSmartGlobTool(cache, tokenCounter, metrics) {
return new SmartGlobTool(cache, tokenCounter, metrics);
}
/**
* CLI function - Creates resources and uses factory
*/
export async function runSmartGlob(pattern, options = {}) {
const cache = new CacheEngine(join(homedir(), '.hypercontext', 'cache'), 100);
const tokenCounter = new TokenCounter();
const metrics = new MetricsCollector();
const tool = getSmartGlobTool(cache, tokenCounter, metrics);
return tool.glob(pattern, options);
}
/**
* MCP Tool Definition
*/
export const SMART_GLOB_TOOL_DEFINITION = {
name: 'smart_glob',
description: 'Search files with glob patterns and 75% token reduction through path-only results and smart filtering',
inputSchema: {
type: 'object',
properties: {
pattern: {
type: 'string',
description: 'Glob pattern to match files (e.g., "src/**/*.ts", "*.json")',
},
cwd: {
type: 'string',
description: 'Working directory for glob search',
},
includeMetadata: {
type: 'boolean',
description: 'Include file metadata (size, modified date, etc.)',
default: false,
},
includeContent: {
type: 'boolean',
description: 'Include file content for small files',
default: false,
},
extensions: {
type: 'array',
items: { type: 'string' },
description: 'Filter by file extensions (e.g., [".ts", ".js"])',
},
limit: {
type: 'number',
description: 'Maximum number of results to return',
},
sortBy: {
type: 'string',
enum: ['name', 'size', 'modified', 'path'],
description: 'Field to sort results by',
default: 'path',
},
},
required: ['pattern'],
},
};
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