Merge branch 'improve-logging'

src/libcalamares/utils/Logger.cpp

@@ -44,6 +44,10 @@ static unsigned int s_threshold =
 #endif
 static QMutex s_mutex;
 
+static const char s_Continuation[] = "\n    ";
+static const char s_SubEntry[] = " .. ";
+
+
 namespace Logger
 {
 
@@ -172,22 +176,39 @@ setupLogfile()
     qInstallMessageHandler( CalamaresLogHandler );
 }
 
-CLog::CLog( unsigned int debugLevel )
+CDebug::CDebug( unsigned int debugLevel, const char* func )
     : QDebug( &m_msg )
     , m_debugLevel( debugLevel )
+    , m_funcinfo( func )
 {
+    if ( debugLevel <= LOGERROR )
+    {
+        m_msg = QStringLiteral( "ERROR:" );
+    }
+    else if ( debugLevel <= LOGWARNING )
+    {
+        m_msg = QStringLiteral( "WARNING:" );
+    }
 }
 
 
-CLog::~CLog()
+CDebug::~CDebug()
 {
+    if ( m_funcinfo )
+    {
+        m_msg.prepend( s_Continuation );  // Prepending, so back-to-front
+        m_msg.prepend( m_funcinfo );
+    }
     log( m_msg.toUtf8().data(), m_debugLevel );
 }
 
-CDebug::~CDebug() {}
+constexpr FuncSuppressor::FuncSuppressor( const char s[] )
+    : m_s( s )
+{
+}
 
-const char Continuation[] = "\n    ";
-const char SubEntry[] = " .. ";
+const constexpr FuncSuppressor Continuation( s_Continuation );
+const constexpr FuncSuppressor SubEntry( s_SubEntry );
 
 QString
 toString( const QVariant& v )

src/libcalamares/utils/Logger.h

@@ -27,8 +27,14 @@
 
 namespace Logger
 {
-DLLEXPORT extern const char Continuation[];
-DLLEXPORT extern const char SubEntry[];
+struct FuncSuppressor
+{
+    explicit constexpr FuncSuppressor( const char[] );
+    const char* m_s;
+};
+
+DLLEXPORT extern const FuncSuppressor Continuation;
+DLLEXPORT extern const FuncSuppressor SubEntry;
 
 enum
 {
@@ -41,34 +47,32 @@ enum
     LOGVERBOSE = 8
 };
 
-class DLLEXPORT CLog : public QDebug
+class DLLEXPORT CDebug : public QDebug
 {
 public:
-    explicit CLog( unsigned int debugLevel );
-    virtual ~CLog();
+    explicit CDebug( unsigned int debugLevel = LOGDEBUG, const char* func = nullptr );
+    virtual ~CDebug();
+
+    friend QDebug& operator<<( CDebug&&, const FuncSuppressor& );
 
 private:
     QString m_msg;
     unsigned int m_debugLevel;
+    const char* m_funcinfo = nullptr;
 };
 
-class DLLEXPORT CDebug : public CLog
+inline QDebug&
+operator<<( CDebug&& s, const FuncSuppressor& f )
 {
-public:
-    CDebug( unsigned int debugLevel = LOGDEBUG )
-        : CLog( debugLevel )
-    {
-        if ( debugLevel <= LOGERROR )
-        {
-            *this << "ERROR:";
-        }
-        else if ( debugLevel <= LOGWARNING )
-        {
-            *this << "WARNING:";
-        }
-    }
-    virtual ~CDebug();
-};
+    s.m_funcinfo = nullptr;
+    return s << f.m_s;
+}
+
+inline QDebug&
+operator<<( QDebug& s, const FuncSuppressor& f )
+{
+    return s << f.m_s;
+}
 
 /**
  * @brief The full path of the log file.
@@ -219,8 +223,8 @@ operator<<( QDebug& s, const DebugMap& t )
 }
 }  // namespace Logger
 
-#define cDebug() (Logger::CDebug( Logger::LOGDEBUG ) << Q_FUNC_INFO << Logger::Continuation)
-#define cWarning() Logger::CDebug( Logger::LOGWARNING )
-#define cError() Logger::CDebug( Logger::LOGERROR )
+#define cDebug() Logger::CDebug( Logger::LOGDEBUG, Q_FUNC_INFO )
+#define cWarning() Logger::CDebug( Logger::LOGWARNING, Q_FUNC_INFO )
+#define cError() Logger::CDebug( Logger::LOGERROR, Q_FUNC_INFO )
 
 #endif

src/modules/partition/jobs/CreatePartitionTableJob.cpp

@@ -69,7 +69,7 @@ CreatePartitionTableJob::prettyStatusMessage() const
 
 
 static inline QDebug&
-operator <<( QDebug& s, PartitionIterator& it )
+operator <<( QDebug&& s, PartitionIterator& it )
 {
     s << ( ( *it ) ? ( *it )->deviceNode() : QString( "<null device>" ) );
     return s;