React Native

Load MIME from BinData

Demonstrates the Chilkat Mime.LoadMimeBd method, which parses complete MIME bytes from a BinData and replaces the current MIME. The only argument is the BinData.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the safest loader because it works on raw bytes: MIME can carry 8-bit content and even embedded NUL bytes that a text string would mangle, so loading from a BinData preserves the message exactly. Prefer it whenever the input is binary or of uncertain encoding — a downloaded message, a file read as bytes — over the string-based loaders.

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React Native

import { BinData, Mime } from '@chilkat/react-native'

function chilkatExample() {
  // Demonstrates the Mime.LoadMimeBd method, which parses complete MIME bytes from a BinData and
  // replaces the current MIME.  The only argument is the BinData.  This is the preferred loader
  // when the MIME may contain arbitrary 8-bit or embedded NUL bytes.

  const bd = new BinData();
  try {
    bd.loadFile('qa_data/message.eml');
  } catch {
    console.log(bd.lastErrorText);
    return;
  }

  const mime = new Mime();
  try {
    mime.loadMimeBd(bd);
  } catch {
    console.log(mime.lastErrorText);
    return;
  }

  console.log(`Content-Type: ${mime.contentType}`);
}