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 11 class GURL; 12 13 #include "net/base/net_export.h" 14 15 namespace 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 // 31 class 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