61 lines
1.9 KiB
TypeScript
61 lines
1.9 KiB
TypeScript
/**
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* 共享的文件类型常量和 MIME 推断工具
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* 供前端 useFileUploader 和服务端 file-uploader 复用
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*/
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export const ACCEPT_FILE_TYPE_LIST = [
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'.pdf', '.doc', '.docx', '.xls', '.xlsx', '.ppt', '.pptx',
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'.txt', '.json', '.csv', '.md',
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'.png', '.jpg', '.jpeg', '.gif', '.bmp', '.webp', '.svg', '.ico',
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'.html', '.py', '.jsonld', '.xml', '.zip',
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'.mp3', '.mp4', '.mov', '.m4a',
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'.pdb', '.mermaid',
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]
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const MIME_MAP: Record<string, string> = {
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'.pdf': 'application/pdf',
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'.doc': 'application/msword',
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'.docx': 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
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'.xls': 'application/vnd.ms-excel',
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'.xlsx': 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
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'.ppt': 'application/vnd.ms-powerpoint',
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'.pptx': 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
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'.txt': 'text/plain',
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'.json': 'application/json',
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'.csv': 'text/csv',
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'.md': 'text/markdown',
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'.png': 'image/png',
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'.jpg': 'image/jpeg',
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'.jpeg': 'image/jpeg',
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'.gif': 'image/gif',
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'.bmp': 'image/bmp',
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'.webp': 'image/webp',
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'.svg': 'image/svg+xml',
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'.ico': 'image/x-icon',
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'.html': 'text/html',
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'.py': 'text/x-python',
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'.jsonld': 'application/ld+json',
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'.xml': 'application/xml',
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'.zip': 'application/zip',
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'.mp3': 'audio/mpeg',
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'.mp4': 'video/mp4',
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'.mov': 'video/quicktime',
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'.m4a': 'audio/mp4',
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'.pdb': 'application/vnd.microsoft.portable-executable',
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'.mermaid': 'text/mermaid',
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}
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export function getFileExtension(filename: string): string {
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return `.${(filename.split('.').pop() || '').toLowerCase()}`
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}
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export function getMimeByExtension(filename: string): string | undefined {
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const ext = getFileExtension(filename)
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return MIME_MAP[ext]
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}
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export function isSupportedFileType(filename: string): boolean {
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const ext = getFileExtension(filename)
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return ACCEPT_FILE_TYPE_LIST.includes(ext)
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}
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