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      1 /*
      2     Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies)
      3 
      4     This library is free software; you can redistribute it and/or
      5     modify it under the terms of the GNU Library General Public
      6     License as published by the Free Software Foundation; either
      7     version 2 of the License, or (at your option) any later version.
      8 
      9     This library is distributed in the hope that it will be useful,
     10     but WITHOUT ANY WARRANTY; without even the implied warranty of
     11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12     Library General Public License for more details.
     13 
     14     You should have received a copy of the GNU Library General Public License
     15     along with this library; see the file COPYING.LIB.  If not, write to
     16     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17     Boston, MA 02110-1301, USA.
     18 */
     19 
     20 #ifndef MIMESniffing_h
     21 #define MIMESniffing_h
     22 
     23 #include <stddef.h>
     24 
     25 // MIME type sniffing implementation based on http://tools.ietf.org/html/draft-abarth-mime-sniff-06
     26 
     27 class MIMESniffer {
     28 public:
     29     MIMESniffer(const char* advertisedMIMEType, bool isSupportedImageType);
     30 
     31     size_t dataSize() const { return m_dataSize; }
     32     const char* sniff(const char* data, size_t size) const { return m_function ?  m_function(data, size) : 0; }
     33     bool isValid() const { return m_dataSize > 0; }
     34 
     35 private:
     36     typedef const char* (*SniffFunction)(const char*, size_t);
     37     size_t m_dataSize;
     38     SniffFunction m_function;
     39 };
     40 
     41 #endif // MIMESniffing_h
     42