Initial commit (by create-cloudflare CLI)

cool-dawn-3d3b/node_modules/data-uri-to-buffer/index.js

@@ -0,0 +1,70 @@
+'use strict';
+
+/**
+ * Module exports.
+ */
+
+module.exports = dataUriToBuffer;
+
+/**
+ * Returns a `Buffer` instance from the given data URI `uri`.
+ *
+ * @param {String} uri Data URI to turn into a Buffer instance
+ * @return {Buffer} Buffer instance from Data URI
+ * @api public
+ */
+
+function dataUriToBuffer(uri) {
+  if (!/^data\:/i.test(uri)) {
+    throw new TypeError(
+      '`uri` does not appear to be a Data URI (must begin with "data:")'
+    );
+  }
+
+  // strip newlines
+  uri = uri.replace(/\r?\n/g, '');
+
+  // split the URI up into the "metadata" and the "data" portions
+  var firstComma = uri.indexOf(',');
+  if (-1 === firstComma || firstComma <= 4) {
+    throw new TypeError('malformed data: URI');
+  }
+
+  // remove the "data:" scheme and parse the metadata
+  var meta = uri.substring(5, firstComma).split(';');
+
+  var type = meta[0] || 'text/plain';
+  var typeFull = type;
+  var base64 = false;
+  var charset = '';
+  for (var i = 1; i < meta.length; i++) {
+    if ('base64' == meta[i]) {
+      base64 = true;
+    } else {
+      typeFull += ';' + meta[i];
+      if (0 == meta[i].indexOf('charset=')) {
+        charset = meta[i].substring(8);
+      }
+    }
+  }
+  // defaults to US-ASCII only if type is not provided
+  if (!meta[0] && !charset.length) {
+    typeFull += ';charset=US-ASCII';
+    charset = 'US-ASCII';
+  }
+
+  // get the encoded data portion and decode URI-encoded chars
+  var data = unescape(uri.substring(firstComma + 1));
+
+  var encoding = base64 ? 'base64' : 'ascii';
+  var buffer = Buffer.from ? Buffer.from(data, encoding) : new Buffer(data, encoding);
+
+  // set `.type` and `.typeFull` properties to MIME type
+  buffer.type = type;
+  buffer.typeFull = typeFull;
+
+  // set the `.charset` property
+  buffer.charset = charset;
+
+  return buffer;
+}