@opengis/fastify-table/server/plugins/file/providers/utils/handlers/index.js

core-plugins

import { readFile } from 'fs/promises';
import { createReadStream } from 'fs';
import { Readable } from 'stream';

import dataTypes from './dataTypes.js';

const handlers = {
  isReadableStream: () => 'Unsupported',
  isBuffer: ({ data, types }) => {
    if (types.includes(dataTypes.stream)) {
      return Readable.from(data);
    }
    return null;
  },
  isArray: ({ data, types }) => {
    if (types.includes(dataTypes.stream)) {
      return Readable.from(Buffer.from(data));
    }
    if (types.includes(dataTypes.buffer)) {
      return Buffer.from(data, 'utf-8');
    }
    if (types.includes(dataTypes.path)) {
      return 'Unsupported';
    }
    return null;
  },
  isPath: async ({ data, types }) => {
    if (types.includes(dataTypes.stream)) {
      return createReadStream(data);
    }
    if (types.includes(dataTypes.buffer)) {
      return readFile(data);
    }
    if (types.includes(dataTypes.text)) {
      return (await readFile(data)).toString();
    }
    return null;
  },
  isText: async ({ data, types }) => {
    if (types.includes(dataTypes.stream)) {
      return Readable.from(Buffer.from(data));
    }
    if (types.includes(dataTypes.buffer)) {
      return Buffer.from(data, 'utf-8');
    }
    if (types.includes(dataTypes.path)) {
      return 'Unsupported';
    }
    return null;
  },
};

export default handlers;