remove trailing whitespace

26 files changed, 65 insertions, 65 deletions

diff --git a/src/QXmppClient.cpp b/src/QXmppClient.cpp
index 0bea7d6b..e078f5a1 100644
--- a/src/QXmppClient.cpp
+++ b/src/QXmppClient.cpp
@@ -92,7 +92,7 @@ void QXmppClientPrivate::addProperCapability(QXmppPresence& presence)
 /// establishment of the XMPP connection and provide a number of high-level
 /// "managers" to perform specific tasks. You can write your own managers to
 /// extend QXmpp by subclassing QXmppClientExtension.
-/// 
+///
 /// <B>Main Class:</B>
 /// - QXmppClient
 ///
@@ -424,7 +424,7 @@ void QXmppClient::setClientPresence(const QXmppPresence& presence)
 
     if (presence.type() == QXmppPresence::Unavailable)
     {
-        // NOTE: we can't call disconnect() because it alters 
+        // NOTE: we can't call disconnect() because it alters
         // the client presence
         if (d->stream->isConnected())
         {
diff --git a/src/QXmppClient.h b/src/QXmppClient.h
index ff9755c4..212244dd 100644
--- a/src/QXmppClient.h
+++ b/src/QXmppClient.h
@@ -137,7 +137,7 @@ public:
     }
 
     void connectToServer(const QXmppConfiguration&,
-                         const QXmppPresence& initialPresence = 
+                         const QXmppPresence& initialPresence =
                          QXmppPresence());
     void connectToServer(const QString &jid,
                          const QString &password);
diff --git a/src/QXmppCodec.cpp b/src/QXmppCodec.cpp
index a9e16cfc..a614ce01 100644
--- a/src/QXmppCodec.cpp
+++ b/src/QXmppCodec.cpp
@@ -75,7 +75,7 @@ static qint16 seg_uend[8] = {0x3F, 0x7F, 0xFF, 0x1FF,
 static qint16 search(qint16 val, qint16 *table, qint16 size)
 {
    qint16 i;
-   
+
    for (i = 0; i < size; i++) {
       if (val <= *table++)
      return (i);
@@ -107,7 +107,7 @@ quint8 linear2alaw(qint16 pcm_val)
    qint16 mask;
    qint16 seg;
    quint8 aval;
-   
+
    pcm_val = pcm_val >> 3;
 
    if (pcm_val >= 0) {
@@ -116,12 +116,12 @@ quint8 linear2alaw(qint16 pcm_val)
       mask = 0x55;      /* sign bit = 0 */
       pcm_val = -pcm_val - 1;
    }
-   
+
    /* Convert the scaled magnitude to segment number. */
    seg = search(pcm_val, seg_aend, 8);
-   
+
    /* Combine the sign, segment, and quantization bits. */
-   
+
    if (seg >= 8)        /* out of range, return maximum value. */
       return (quint8) (0x7F ^ mask);
    else {
@@ -142,9 +142,9 @@ qint16 alaw2linear(quint8 a_val)
 {
    qint16 t;
    qint16 seg;
-   
+
    a_val ^= 0x55;
-   
+
    t = (a_val & QUANT_MASK) << 4;
    seg = ((qint16)a_val & SEG_MASK) >> SEG_SHIFT;
    switch (seg) {
@@ -195,7 +195,7 @@ quint8 linear2ulaw(qint16 pcm_val)
    qint16 mask;
    qint16 seg;
    quint8 uval;
-   
+
    /* Get the sign and the magnitude of the value. */
    pcm_val = pcm_val >> 2;
    if (pcm_val < 0) {
@@ -206,10 +206,10 @@ quint8 linear2ulaw(qint16 pcm_val)
    }
    if (pcm_val > CLIP) pcm_val = CLIP;        /* clip the magnitude */
    pcm_val += (BIAS >> 2);
-   
+
    /* Convert the scaled magnitude to segment number. */
    seg = search(pcm_val, seg_uend, 8);
-   
+
    /*
    * Combine the sign, segment, quantization bits;
    * and complement the code word.
@@ -234,17 +234,17 @@ quint8 linear2ulaw(qint16 pcm_val)
 qint16 ulaw2linear(quint8 u_val)
 {
    qint16 t;
-   
+
    /* Complement to obtain normal u-law value. */
    u_val = ~u_val;
-   
+
    /*
     * Extract and bias the quantization bits. Then
     * shift up by the segment number and subtract out the bias.
     */
    t = ((u_val & QUANT_MASK) << 3) + BIAS;
    t <<= ((unsigned)u_val & SEG_MASK) >> SEG_SHIFT;
-   
+
    return ((u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS));
 }
 
@@ -835,7 +835,7 @@ bool QXmppTheoraEncoder::setFormat(const QXmppVideoFormat &format)
 #endif
         stream.writeRawData(headers[h].data(), headers[h].size());
     }
-    
+
     return true;
 }
 
diff --git a/src/QXmppDataForm.cpp b/src/QXmppDataForm.cpp
index bfce6fcb..aab3857d 100644
--- a/src/QXmppDataForm.cpp
+++ b/src/QXmppDataForm.cpp
@@ -312,8 +312,8 @@ void QXmppDataForm::parse(const QDomElement &element)
             field.setValue(valueStr == "1" || valueStr == "true");
         }
         else if (type == QXmppDataForm::Field::ListMultiField ||
-            type == QXmppDataForm::Field::JidMultiField || 
-            type == QXmppDataForm::Field::TextMultiField) 
+            type == QXmppDataForm::Field::JidMultiField ||
+            type == QXmppDataForm::Field::TextMultiField)
         {
             QStringList values;
             QDomElement valueElement = fieldElement.firstChildElement("value");
@@ -332,14 +332,14 @@ void QXmppDataForm::parse(const QDomElement &element)
         /* field options */
         if (type == QXmppDataForm::Field::ListMultiField ||
             type == QXmppDataForm::Field::ListSingleField)
-        { 
+        {
             QList<QPair<QString, QString> > options;
             QDomElement optionElement = fieldElement.firstChildElement("option");
             while (!optionElement.isNull())
             {
                 options.append(QPair<QString, QString>(optionElement.attribute("label"),
                     optionElement.firstChildElement("value").text()));
-                optionElement = optionElement.nextSiblingElement("option"); 
+                optionElement = optionElement.nextSiblingElement("option");
             }
             field.setOptions(options);
         }
@@ -380,7 +380,7 @@ void QXmppDataForm::toXml(QXmlStreamWriter *writer) const
     if (!m_instructions.isEmpty())
         helperToXmlAddTextElement(writer, "instructions", m_instructions);
 
-   
+
     foreach (const QXmppDataForm::Field &field, m_fields)
     {
         writer->writeStartElement("field");
@@ -407,7 +407,7 @@ void QXmppDataForm::toXml(QXmlStreamWriter *writer) const
         if (type == QXmppDataForm::Field::BooleanField)
         {
             helperToXmlAddTextElement(writer, "value", field.value().toBool() ? "1" : "0");
-        } 
+        }
         else if (type == QXmppDataForm::Field::ListMultiField ||
             type == QXmppDataForm::Field::JidMultiField ||
             type == QXmppDataForm::Field::TextMultiField)
diff --git a/src/QXmppDiscoveryIq.cpp b/src/QXmppDiscoveryIq.cpp
index 1409721e..6e0d33d5 100644
--- a/src/QXmppDiscoveryIq.cpp
+++ b/src/QXmppDiscoveryIq.cpp
@@ -215,7 +215,7 @@ bool QXmppDiscoveryIq::isDiscoveryIq(const QDomElement &element)
 {
     QDomElement queryElement = element.firstChildElement("query");
     return (queryElement.namespaceURI() == ns_disco_info ||
-            queryElement.namespaceURI() == ns_disco_items); 
+            queryElement.namespaceURI() == ns_disco_items);
 }
 
 void QXmppDiscoveryIq::parseElementFromChild(const QDomElement &element)
diff --git a/src/QXmppJingleIq.cpp b/src/QXmppJingleIq.cpp
index 976c4d2b..5eb11322 100644
--- a/src/QXmppJingleIq.cpp
+++ b/src/QXmppJingleIq.cpp
@@ -435,7 +435,7 @@ QXmppJingleCandidate::QXmppJingleCandidate()
 }
 
 /// Returns the candidate's component ID.
- 
+
 int QXmppJingleCandidate::component() const
 {
     return m_component;
diff --git a/src/QXmppLogger.h b/src/QXmppLogger.h
index 5d139a91..6ca98755 100644
--- a/src/QXmppLogger.h
+++ b/src/QXmppLogger.h
@@ -33,7 +33,7 @@
 #define qxmpp_loggable_trace(x) (x)
 #endif
 
-/// \brief The QXmppLogger class represents a sink for logging messages. 
+/// \brief The QXmppLogger class represents a sink for logging messages.
 ///
 /// \ingroup Core
 
@@ -95,7 +95,7 @@ private:
     QXmppLogger::MessageTypes m_messageTypes;
 };
 
-/// \brief The QXmppLoggable class represents a source of logging messages. 
+/// \brief The QXmppLoggable class represents a source of logging messages.
 ///
 /// \ingroup Core
 
diff --git a/src/QXmppMessage.cpp b/src/QXmppMessage.cpp
index 100b82e3..a76e02ec 100644
--- a/src/QXmppMessage.cpp
+++ b/src/QXmppMessage.cpp
@@ -45,7 +45,7 @@ static const char* chat_states[] = {
 /// \param body
 /// \param thread
 
-QXmppMessage::QXmppMessage(const QString& from, const QString& to, const 
+QXmppMessage::QXmppMessage(const QString& from, const QString& to, const
                          QString& body, const QString& thread)
     : QXmppStanza(from, to),
       m_type(Chat),
@@ -141,7 +141,7 @@ void QXmppMessage::setTypeFromStr(const QString& str)
         setType(QXmppMessage::Error);
         return;
     }
-    else if(str == "")   // if no type is specified 
+    else if(str == "")   // if no type is specified
     {
         setType(QXmppMessage::Normal);
         return;
diff --git a/src/QXmppMessage.h b/src/QXmppMessage.h
index b73b5a0b..9d518f74 100644
--- a/src/QXmppMessage.h
+++ b/src/QXmppMessage.h
@@ -46,7 +46,7 @@ public:
         Headline
     };
 
-    /// This enum describes a chat state as defined by 
+    /// This enum describes a chat state as defined by
     /// XEP-0085 : Chat State Notifications.
     enum State
     {
@@ -67,7 +67,7 @@ public:
 
     bool isAttentionRequested() const;
     void setAttentionRequested(bool requested);
- 
+
     QDateTime stamp() const;
     void setStamp(const QDateTime &stamp);
 
diff --git a/src/QXmppOutgoingClient.cpp b/src/QXmppOutgoingClient.cpp
index 96c20292..1a52be02 100644
--- a/src/QXmppOutgoingClient.cpp
+++ b/src/QXmppOutgoingClient.cpp
@@ -266,7 +266,7 @@ void QXmppOutgoingClient::handleStanza(const QDomElement &nodeRecv)
     emit elementReceived(nodeRecv, handled);
     if (handled)
         return;
- 
+
     if(QXmppStreamFeatures::isStreamFeatures(nodeRecv))
     {
         QXmppStreamFeatures features;
@@ -295,7 +295,7 @@ void QXmppOutgoingClient::handleStanza(const QDomElement &nodeRecv)
 
             if (socket()->supportsSsl() &&
                 localSecurity != QXmppConfiguration::TLSDisabled &&
-                remoteSecurity != QXmppStreamFeatures::Disabled) 
+                remoteSecurity != QXmppStreamFeatures::Disabled)
             {
                 // enable TLS as it is support by both parties
                 sendData("<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
diff --git a/src/QXmppOutgoingServer.cpp b/src/QXmppOutgoingServer.cpp
index 7984fd92..0845c6d4 100644
--- a/src/QXmppOutgoingServer.cpp
+++ b/src/QXmppOutgoingServer.cpp
@@ -196,7 +196,7 @@ void QXmppOutgoingServer::handleStanza(const QDomElement &stanza)
         // check the request is valid
         if (response.from().isEmpty() ||
             response.to() != d->localDomain ||
-            response.type().isEmpty()) 
+            response.type().isEmpty())
         {
             warning("Invalid dialback response received");
             return;
diff --git a/src/QXmppPacket.h b/src/QXmppPacket.h
index 7e332391..427217c7 100644
--- a/src/QXmppPacket.h
+++ b/src/QXmppPacket.h
@@ -40,7 +40,7 @@ class QXmppPacket
 public:
     QXmppPacket();
     virtual ~QXmppPacket();
-    
+
     virtual void parse(const QDomElement &element) = 0;
     virtual void toXml( QXmlStreamWriter *writer ) const = 0;
 };
diff --git a/src/QXmppPasswordChecker.cpp b/src/QXmppPasswordChecker.cpp
index 0bbf6802..9048d66c 100644
--- a/src/QXmppPasswordChecker.cpp
+++ b/src/QXmppPasswordChecker.cpp
@@ -143,7 +143,7 @@ QString QXmppPasswordReply::password() const
 
 /// Sets the received password.
 ///
-/// \param password 
+/// \param password
 
 void QXmppPasswordReply::setPassword(const QString &password)
 {
diff --git a/src/QXmppPresence.cpp b/src/QXmppPresence.cpp
index df5ff9f0..b967c8e5 100644
--- a/src/QXmppPresence.cpp
+++ b/src/QXmppPresence.cpp
@@ -319,7 +319,7 @@ void QXmppPresence::Status::setTypeFromStr(const QString& str)
     else if(str == "xa")
         m_type = QXmppPresence::Status::XA;
     else {
-        qWarning("QXmppPresence::Status::setTypeFromStr() invalid input string type %s", 
+        qWarning("QXmppPresence::Status::setTypeFromStr() invalid input string type %s",
             qPrintable(str));
         m_type = QXmppPresence::Status::Online;
     }
diff --git a/src/QXmppPresence.h b/src/QXmppPresence.h
index f7422c55..8b85e01b 100644
--- a/src/QXmppPresence.h
+++ b/src/QXmppPresence.h
@@ -73,7 +73,7 @@ public:
             Offline = 0,
             Online,      ///< The entity or resource is online.
             Away,        ///< The entity or resource is temporarily away.
-            XA,          ///< The entity or resource is away for an extended period. 
+            XA,          ///< The entity or resource is away for an extended period.
             DND,         ///< The entity or resource is busy ("Do Not Disturb").
             Chat,        ///< The entity or resource is actively interested in chatting.
         };
@@ -104,7 +104,7 @@ public:
         int m_priority;
     };
 
-    QXmppPresence(QXmppPresence::Type type = QXmppPresence::Available, 
+    QXmppPresence(QXmppPresence::Type type = QXmppPresence::Available,
         const QXmppPresence::Status& status = QXmppPresence::Status());
     ~QXmppPresence();
 
diff --git a/src/QXmppReconnectionManager.cpp b/src/QXmppReconnectionManager.cpp
index 4169dbb8..adb84e9f 100644
--- a/src/QXmppReconnectionManager.cpp
+++ b/src/QXmppReconnectionManager.cpp
@@ -47,7 +47,7 @@ void QXmppReconnectionManager::connected()
 }
 
 void QXmppReconnectionManager::error(QXmppClient::Error error)
-{   
+{
     if(m_client && error == QXmppClient::XmppStreamError)
     {
         // if we receive a resource conflict, inhibit reconnection
diff --git a/src/QXmppRosterManager.h b/src/QXmppRosterManager.h
index 32b1addf..c7c07de5 100644
--- a/src/QXmppRosterManager.h
+++ b/src/QXmppRosterManager.h
@@ -68,11 +68,11 @@ class QXmppRosterManager : public QXmppClientExtension
 public:
     QXmppRosterManager(QXmppClient* stream);
     ~QXmppRosterManager();
-    
+
     bool isRosterReceived() const;
     QStringList getRosterBareJids() const;
     QXmppRosterIq::Item getRosterEntry(const QString& bareJid) const;
-    
+
     QStringList getResources(const QString& bareJid) const;
     QMap<QString, QXmppPresence> getAllPresencesForBareJid(
             const QString& bareJid) const;
@@ -98,7 +98,7 @@ public slots:
 signals:
     /// This signal is emitted when the Roster IQ is received after a successful
     /// connection. That is the roster entries are empty before this signal is emitted.
-    /// One should use getRosterBareJids() and getRosterEntry() only after 
+    /// One should use getRosterBareJids() and getRosterEntry() only after
     /// this signal has been emitted.
     void rosterReceived();
 
diff --git a/src/QXmppRpcManager.cpp b/src/QXmppRpcManager.cpp
index cf95848c..9730b755 100644
--- a/src/QXmppRpcManager.cpp
+++ b/src/QXmppRpcManager.cpp
@@ -50,7 +50,7 @@ void QXmppRpcManager::addInvokableInterface( QXmppInvokable *interface )
 void QXmppRpcManager::invokeInterfaceMethod( const QXmppRpcInvokeIq &iq )
 {
     QXmppStanza::Error error;
-    
+
     const QStringList methodBits = iq.method().split('.');
     if (methodBits.size() != 2)
         return;
diff --git a/src/QXmppSaslAuth.cpp b/src/QXmppSaslAuth.cpp
index 9543ea02..a528cd6d 100644
--- a/src/QXmppSaslAuth.cpp
+++ b/src/QXmppSaslAuth.cpp
@@ -164,7 +164,7 @@ QMap<QByteArray, QByteArray> QXmppSaslDigestMd5::parseMessage(const QByteArray &
             // unquote
             QByteArray value = ba.mid(pos, endPos - pos);
             value.replace("\\\"", "\"");
-            value.replace("\\\\", "\\"); 
+            value.replace("\\\\", "\\");
             map[key] = value;
             // skip closing quote and comma
             startIndex = endPos + 2;
diff --git a/src/QXmppStanza.cpp b/src/QXmppStanza.cpp
index be6a6ee7..bec4eee3 100644
--- a/src/QXmppStanza.cpp
+++ b/src/QXmppStanza.cpp
@@ -38,7 +38,7 @@ QXmppStanza::Error::Error():
 {
 }
 
-QXmppStanza::Error::Error(Type type, Condition cond, const QString& text): 
+QXmppStanza::Error::Error(Type type, Condition cond, const QString& text):
     m_code(0),
     m_type(type),
     m_condition(cond),
@@ -253,7 +253,7 @@ void QXmppStanza::Error::parse(const QDomElement &errorElement)
         else if(element.namespaceURI() == ns_stanza)
         {
             cond = element.tagName();
-        }        
+        }
         element = element.nextSiblingElement();
     }
 
@@ -265,7 +265,7 @@ void QXmppStanza::Error::toXml( QXmlStreamWriter *writer ) const
 {
     QString cond = getConditionStr();
     QString type = getTypeStr();
-    
+
     if(cond.isEmpty() && type.isEmpty())
         return;
 
@@ -323,7 +323,7 @@ QString QXmppStanza::to() const
 ///
 /// \param to
 
-void QXmppStanza::setTo(const QString& to)  
+void QXmppStanza::setTo(const QString& to)
 {
     m_to = to;
 }
@@ -346,7 +346,7 @@ void QXmppStanza::setFrom(const QString& from)
 
 /// Returns the stanza's identifier.
 
-QString QXmppStanza::id() const    
+QString QXmppStanza::id() const
 {
     return m_id;
 }
@@ -355,14 +355,14 @@ QString QXmppStanza::id() const
 ///
 /// \param id
 
-void QXmppStanza::setId(const QString& id)    
+void QXmppStanza::setId(const QString& id)
 {
     m_id = id;
 }
 
 /// Returns the stanza's language.
 
-QString QXmppStanza::lang() const    
+QString QXmppStanza::lang() const
 {
     return m_lang;
 }
@@ -371,7 +371,7 @@ QString QXmppStanza::lang() const
 ///
 /// \param lang
 
-void QXmppStanza::setLang(const QString& lang)    
+void QXmppStanza::setLang(const QString& lang)
 {
     m_lang = lang;
 }
diff --git a/src/QXmppStanza.h b/src/QXmppStanza.h
index aa2285f4..6a940ce4 100644
--- a/src/QXmppStanza.h
+++ b/src/QXmppStanza.h
@@ -121,7 +121,7 @@ public:
 
     QXmppStanza(const QString& from = QString(), const QString& to = QString());
     ~QXmppStanza();
-    
+
     QString to() const;
     void setTo(const QString&);
 
@@ -151,9 +151,9 @@ protected:
 
 private:
     static uint s_uniqeIdNo;
-    QString m_to;  
+    QString m_to;
     QString m_from;
-    QString m_id;    
+    QString m_id;
     QString m_lang;
     QXmppStanza::Error m_error;
     QXmppElementList m_extensions;
diff --git a/src/QXmppStun.cpp b/src/QXmppStun.cpp
index 08308648..16cef928 100644
--- a/src/QXmppStun.cpp
+++ b/src/QXmppStun.cpp
@@ -773,7 +773,7 @@ bool QXmppStunMessage::decode(const QByteArray &buffer, const QByteArray &key, Q
 
 /// Encodes the current QXmppStunMessage, optionally calculating the
 /// message integrity attribute using the given key.
-/// 
+///
 /// \param key
 /// \param addFingerprint
 
@@ -978,7 +978,7 @@ quint16 QXmppStunMessage::peekType(const QByteArray &buffer, quint32 &cookie, QB
     stream.readRawData(id.data(), id.size());
     return type;
 }
- 
+
 QString QXmppStunMessage::toString() const
 {
     QStringList dumpLines;
@@ -2117,7 +2117,7 @@ void QXmppIceComponent::handleDatagram(const QByteArray &buffer, const QHostAddr
 
     // signal completion
     if (pair && pair->checked == QIODevice::ReadWrite)
-    { 
+    {
         m_timer->stop();
         if (!m_activePair || pair->priority() > m_activePair->priority()) {
             info(QString("ICE pair selected %1 (priority: %2)").arg(
diff --git a/src/QXmppTransferManager.cpp b/src/QXmppTransferManager.cpp
index 3e753407..b9d71408 100644
--- a/src/QXmppTransferManager.cpp
+++ b/src/QXmppTransferManager.cpp
@@ -731,7 +731,7 @@ bool QXmppTransferManager::handleStanza(const QDomElement &element)
 
     return false;
 }
- 
+
 QXmppTransferJob* QXmppTransferManager::getJobByRequestId(QXmppTransferJob::Direction direction, const QString &jid, const QString &id)
 {
     foreach (QXmppTransferJob *job, m_jobs)
@@ -1174,7 +1174,7 @@ QXmppTransferJob *QXmppTransferManager::sendFile(const QString &jid, QIODevice *
     file.setAttribute("name", job->fileName());
     file.setAttribute("size", QString::number(job->fileSize()));
     items.append(file);
- 
+
     QXmppElement feature;
     feature.setTagName("feature");
     feature.setAttribute("xmlns", ns_feature_negotiation);
@@ -1478,7 +1478,7 @@ void QXmppTransferManager::streamInitiationSetReceived(const QXmppStreamInitiati
         response.setType(QXmppIq::Error);
         response.setError(error);
         client()->sendPacket(response);
-    
+
         delete job;
         return;
     }
diff --git a/src/QXmppTransferManager.h b/src/QXmppTransferManager.h
index 88b227bb..900d2163 100644
--- a/src/QXmppTransferManager.h
+++ b/src/QXmppTransferManager.h
@@ -207,7 +207,7 @@ private:
 /// \endcode
 ///
 /// \ingroup Managers
- 
+
 class QXmppTransferManager : public QXmppClientExtension
 {
     Q_OBJECT
diff --git a/src/QXmppUtils.cpp b/src/QXmppUtils.cpp
index a6a28298..1698582f 100644
--- a/src/QXmppUtils.cpp
+++ b/src/QXmppUtils.cpp
@@ -253,7 +253,7 @@ QByteArray generateHmacSha1(const QByteArray &key, const QByteArray &text)
     return generateHmac(QCryptographicHash::Sha1, key, text);
 }
 
-/// Generates a random integer x between 0 and N-1. 
+/// Generates a random integer x between 0 and N-1.
 ///
 /// \param N
 
diff --git a/src/QXmppVCardIq.cpp b/src/QXmppVCardIq.cpp
index 82b4ed53..aaaf4554 100644
--- a/src/QXmppVCardIq.cpp
+++ b/src/QXmppVCardIq.cpp
@@ -42,7 +42,7 @@ QString getImageType(const QByteArray &contents)
     else if (contents.contains("/* XPM */"))
         return "image/x-xpm";
     else if (contents.contains("<?xml") && contents.contains("<svg"))
-        return "image/svg+xml"; 
+        return "image/svg+xml";
     else if (contents.startsWith("\xFF\xD8\xFF\xE0"))
         return "image/jpeg";
     return "image/unknown";