/*!
Returns the list of file extensions associated with the MIME type.
*/
QStringList QMimeType::extensions() const
{
if(loadedTimes()->count() == 0)
loadExtensions();
return extFor()->value(mimeId);
}
/*!
\internal
Clears out the internal structures, to force a reload of the information.
*/
void QMimeType::clear()
{
QMutexLocker staticsGuard(&staticsGuardMutex);
extFor()->clear();
typeFor()->clear();
loadedTimes()->clear();
mimeTypeDataCache()->clear();
}
/*!
\internal
Loads the mime type to extensions mapping
*/
static void loadExtensions()
{
QMutex mutex;
mutex.lock();
static bool loaded = false;
if(loaded)
{
mutex.unlock();
return;
}
QFile file(":qtopiamail/mime.types");
if ( file.open(QIODevice::ReadOnly) ) {
char line[1024];
while (file.readLine(line, sizeof(line)) > 0) {
if (line[0] == '\0' || line[0] == '#')
continue;
int posn = 0;
QString id = nextString(line, posn);
if ( id.isEmpty() )
continue;
id = id.toLower();
QStringList exts = extFor()->value(id);
for( QString ext = nextString( line, posn ); !ext.isEmpty(); ext = nextString(line, posn).toLower() )
{
if( !exts.contains( ext ) )
{
exts.append( ext );
typeFor()->insert(ext, id);
}
}
(*extFor())[ id ] = exts;
}
loaded = true;
}
mutex.unlock();
}
/*!
Returns the string mime type based on the filename \a filename.
*/
QString QMail::mimeTypeFromFileName(const QString& filename)
{
if (filename.isEmpty())
return QString();
loadExtensions();
// do a case insensitive search for a known mime type.
QString lwrExtOrId = filename.toLower();
QHash<QString,QStringList>::const_iterator it = extFor()->find(lwrExtOrId);
if (it != extFor()->end()) {
return lwrExtOrId;
}
// either it doesnt have exactly one mime-separator, or it has
// a path separator at the beginning
QString mime_sep = QLatin1String("/");
bool doesntLookLikeMimeString = (filename.count(mime_sep) != 1) || (filename[0] == QDir::separator());
if (doesntLookLikeMimeString || QFile::exists(filename)) {
int dot = filename.lastIndexOf('.');
QString ext = dot >= 0 ? filename.mid(dot+1) : filename;
QHash<QString,QString>::const_iterator it = typeFor()->find(ext.toLower());
if (it != typeFor()->end()) {
return *it;
}
const char elfMagic[] = { '\177', 'E', 'L', 'F', '\0' };
QFile ef(filename);
if (ef.exists() && (ef.size() > 5) && ef.open(QIODevice::ReadOnly) && (ef.peek(5) == elfMagic)) { // try to find from magic
return QLatin1String("application/x-executable"); // could be a shared library or an exe
} else {
return QLatin1String("application/octet-stream");
}
}
// could be something like application/vnd.oma.rights+object
return lwrExtOrId;
}
/*!
Returns a list of valid file extensions for the mime type string \a mimeType
or an empty list if the mime type is unrecognized.
*/
QStringList QMail::extensionsForMimeType(const QString& mimeType)
{
loadExtensions();
return extFor()->value(mimeType);
}