Page Speed Optimization Libraries  1.6.29.3
net/instaweb/util/public/charset_util.h
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00001 /*
00002  * Copyright 2012 Google Inc.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *      http:///www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00018 
00022 
00023 #ifndef NET_INSTAWEB_UTIL_PUBLIC_CHARSET_UTIL_H_
00024 #define NET_INSTAWEB_UTIL_PUBLIC_CHARSET_UTIL_H_
00025 
00026 #include "net/instaweb/util/public/string_util.h"
00027 
00028 namespace net_instaweb {
00029 
00031 const char kUtf8Charset[]                  = "utf-8";
00032 const char kUtf16BigEndianCharset[]        = "utf-16be";
00033 const char kUtf16LittleEndianCharset[]     = "utf-16le";
00034 const char kUtf32BigEndianCharset[]        = "utf-32be";
00035 const char kUtf32LittleEndianCharset[]     = "utf-32le";
00036 
00038 const char kUtf8Bom[]                  = "\xEF\xBB\xBF";
00039 const char kUtf16BigEndianBom[]        = "\xFE\xFF";
00040 const char kUtf16LittleEndianBom[]     = "\xFF\xFE";
00041 const char kUtf32BigEndianBom[]        = "\x00\x00\xFE\xFF";
00042 const char kUtf32LittleEndianBom[]     = "\xFF\xFE\x00\x00";
00043 
00061 bool StripUtf8Bom(StringPiece* contents);
00062 
00066 const StringPiece GetCharsetForBom(const StringPiece contents);
00067 
00068 }  
00069 
00070 #endif  ///< NET_INSTAWEB_UTIL_PUBLIC_CHARSET_UTIL_H_
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