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JavaScript

/**
* Parses the result of XMLHttpRequest's getAllResponseHeaders() method into
* a dictionary.
*
* @function parseResponseHeaders
*
* @param {String} headerString The header string returned by getAllResponseHeaders(). The format is
* described here: http://www.w3.org/TR/XMLHttpRequest/#the-getallresponseheaders()-method
* @returns {Object} A dictionary of key/value pairs, where each key is the name of a header and the corresponding value
* is that header's value.
*
* @private
*/
function parseResponseHeaders(headerString) {
var headers = {};
if (!headerString) {
return headers;
}
var headerPairs = headerString.split("\u000d\u000a");
for (var i = 0; i < headerPairs.length; ++i) {
var headerPair = headerPairs[i];
// Can't use split() here because it does the wrong thing
// if the header value has the string ": " in it.
var index = headerPair.indexOf("\u003a\u0020");
if (index > 0) {
var key = headerPair.substring(0, index);
var val = headerPair.substring(index + 2);
headers[key] = val;
}
}
return headers;
}
export default parseResponseHeaders;