@aplus-frontend/utils/es/file/convert.js

Utils for Aplus frontend team.

function dataURLtoBlob(base64Buf) {
  const arr = base64Buf.split(",");
  const typeItem = arr[0];
  const mime = typeItem.match(/:(.*?);/)[1];
  const bstr = window.atob(arr[1]);
  let n = bstr.length;
  const u8arr = new Uint8Array(n);
  while (n--) {
    u8arr[n] = bstr.charCodeAt(n);
  }
  return new Blob([u8arr], { type: mime });
}
function urlToBase64(url, mineType) {
  return new Promise((resolve, reject) => {
    let canvas = document.createElement("CANVAS");
    const ctx = canvas.getContext("2d");
    const img = new Image();
    img.crossOrigin = "";
    img.onload = function() {
      if (!canvas || !ctx) {
        return reject();
      }
      canvas.height = img.height;
      canvas.width = img.width;
      ctx.drawImage(img, 0, 0);
      const dataURL = canvas.toDataURL(mineType || "image/png");
      canvas = null;
      resolve(dataURL);
    };
    img.src = url;
  });
}
export {
  dataURLtoBlob,
  urlToBase64
};