1// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef NET_BASE_DATA_URL_H_ 6#define NET_BASE_DATA_URL_H_ 7#pragma once 8 9#include <string> 10 11class GURL; 12 13#include "net/base/net_export.h" 14 15namespace net { 16 17// See RFC 2397 for a complete description of the 'data' URL scheme. 18// 19// Briefly, a 'data' URL has the form: 20// 21// data:[<mediatype>][;base64],<data> 22// 23// The <mediatype> is an Internet media type specification (with optional 24// parameters.) The appearance of ";base64" means that the data is encoded as 25// base64. Without ";base64", the data (as a sequence of octets) is represented 26// using ASCII encoding for octets inside the range of safe URL characters and 27// using the standard %xx hex encoding of URLs for octets outside that range. 28// If <mediatype> is omitted, it defaults to text/plain;charset=US-ASCII. As a 29// shorthand, "text/plain" can be omitted but the charset parameter supplied. 30// 31class NET_EXPORT DataURL { 32 public: 33 // This method can be used to parse a 'data' URL into its component pieces. 34 // 35 // The resulting mime_type is normalized to lowercase. The data is the 36 // decoded data (e.g.., if the data URL specifies base64 encoding, then the 37 // returned data is base64 decoded, and any %-escaped bytes are unescaped). 38 // 39 // If the URL is malformed, then this method will return false, and its 40 // output variables will remain unchanged. On success, true is returned. 41 // 42 // OPTIONAL: If |data| is NULL, then the <data> section will not be parsed 43 // or validated. 44 // 45 static bool Parse(const GURL& url, 46 std::string* mime_type, 47 std::string* charset, 48 std::string* data); 49}; 50 51} // namespace net 52 53#endif // NET_BASE_DATA_URL_H_ 54