Chris@1855: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@1855: 
Chris@1855: /*
Chris@1855:     Sonic Visualiser
Chris@1855:     An audio file viewer and annotation editor.
Chris@1855:     Centre for Digital Music, Queen Mary, University of London.
Chris@1855:     
Chris@1855:     This program is free software; you can redistribute it and/or
Chris@1855:     modify it under the terms of the GNU General Public License as
Chris@1855:     published by the Free Software Foundation; either version 2 of the
Chris@1855:     License, or (at your option) any later version.  See the file
Chris@1855:     COPYING included with this distribution for more information.
Chris@1855: */
Chris@1855: 
Chris@1855: #ifndef SV_TEXT_TEST_H
Chris@1855: #define SV_TEXT_TEST_H
Chris@1855: 
Chris@1855: #include "data/fileio/FileSource.h"
Chris@1855: 
Chris@1855: class TextTest
Chris@1855: {
Chris@1855: public:
Chris@1855:     /**
Chris@1855:      * Return true if the source appears to point to a text format of
Chris@1855:      * some kind (could be CSV, XML, RDF/Turtle etc).
Chris@1855:      *
Chris@1855:      * We apply two tests and report success if either succeeds:
Chris@1855:      *
Chris@1855:      * 1. The first few hundred bytes (where present) of the document
Chris@1855:      *    are valid UTF-8
Chris@1855:      *
Chris@1855:      * 2. The document starts with the text "<?xml" when opened using
Chris@1855:      *    QXmlInputSource (which guesses its text encoding)
Chris@1855:      *
Chris@1855:      * So we only accept non-UTF-8 encodings where they also happen to
Chris@1855:      * be XML documents.
Chris@1855:      */
Chris@1855:     static bool isApparentTextDocument(FileSource);
Chris@1855: };
Chris@1855: 
Chris@1855: #endif