/**
* Language Detection Utilities
* Determines file types and languages based on extension and content
*/
import path from 'path';
// Map of file extensions to languages
const extensionToLanguage: Record<string, string> = {
// JavaScript/TypeScript
'.js': 'javascript',
'.mjs': 'javascript',
'.cjs': 'javascript',
'.jsx': 'javascriptreact',
'.ts': 'typescript',
'.tsx': 'typescriptreact',
'.mts': 'typescript',
'.cts': 'typescript',
// Web
'.html': 'html',
'.htm': 'html',
'.css': 'css',
'.scss': 'scss',
'.sass': 'sass',
'.less': 'less',
// Data/Config
'.json': 'json',
'.jsonc': 'jsonc',
'.yaml': 'yaml',
'.yml': 'yaml',
'.toml': 'toml',
'.xml': 'xml',
// Markdown
'.md': 'markdown',
'.mdx': 'mdx',
// Other
'.graphql': 'graphql',
'.gql': 'graphql',
'.sql': 'sql',
'.sh': 'shellscript',
'.bash': 'shellscript',
'.zsh': 'shellscript',
'.ps1': 'powershell',
'.py': 'python',
'.rb': 'ruby',
'.java': 'java',
'.go': 'go',
'.rs': 'rust',
'.c': 'c',
'.cpp': 'cpp',
'.h': 'c',
'.hpp': 'cpp'
};
// Binary file extensions to skip
const binaryExtensions = new Set([
'.png',
'.jpg',
'.jpeg',
'.gif',
'.ico',
'.svg',
'.webp',
'.bmp',
'.woff',
'.woff2',
'.ttf',
'.eot',
'.otf',
'.mp3',
'.mp4',
'.wav',
'.avi',
'.mov',
'.webm',
'.pdf',
'.doc',
'.docx',
'.xls',
'.xlsx',
'.ppt',
'.pptx',
'.zip',
'.tar',
'.gz',
'.rar',
'.7z',
'.exe',
'.dll',
'.so',
'.dylib',
'.lock',
'.map'
]);
// Code file extensions
const codeExtensions = new Set([
'.js',
'.mjs',
'.cjs',
'.jsx',
'.ts',
'.tsx',
'.mts',
'.cts',
'.html',
'.htm',
'.css',
'.scss',
'.sass',
'.less',
'.json',
'.jsonc',
'.yaml',
'.yml',
'.md',
'.mdx',
'.graphql',
'.gql',
'.py',
'.rb',
'.java',
'.go',
'.rs',
'.c',
'.cpp',
'.h',
'.hpp'
]);
/**
* Detect language from file path
*/
export function detectLanguage(filePath: string): string {
const ext = path.extname(filePath).toLowerCase();
return extensionToLanguage[ext] || 'plaintext';
}
/**
* Check if a file is a code file
*/
export function isCodeFile(filePath: string): boolean {
const ext = path.extname(filePath).toLowerCase();
return codeExtensions.has(ext);
}
/**
* Check if a file is binary
*/
export function isBinaryFile(filePath: string): boolean {
const ext = path.extname(filePath).toLowerCase();
return binaryExtensions.has(ext);
}
/**
* Check if file is a test file
*/
export function isTestFile(filePath: string): boolean {
const lowerPath = filePath.toLowerCase();
return (
lowerPath.includes('.spec.') ||
lowerPath.includes('.test.') ||
lowerPath.includes('__tests__') ||
lowerPath.includes('/test/') ||
lowerPath.includes('/tests/')
);
}
/**
* Check if file is a style guide or documentation
*/
export function isDocumentationFile(filePath: string): boolean {
const lowerPath = filePath.toLowerCase();
const fileName = path.basename(lowerPath);
return (
fileName === 'readme.md' ||
fileName === 'contributing.md' ||
fileName === 'changelog.md' ||
fileName === 'license.md' ||
fileName === 'style_guide.md' ||
fileName === 'style-guide.md' ||
fileName === 'architecture.md' ||
lowerPath.includes('/docs/')
);
}
/**
* Get all supported extensions
*/
export function getSupportedExtensions(): string[] {
return Array.from(codeExtensions);
}
