qmlcompiler/qmllint: Use unified logger

Improves the logging situation greatly by allowing all logging messages to be assigned different severities,
highlighting the code that caused them and by now ensuring a qmllint warning will always result in a non-zero exit code.

A later patch will expose more of these options to the user.

Change-Id: Id9b036fe3ba80dd18e9f8cb1b05efa891713d5a8
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 112 insertions, 0 deletions

diff --git a/src/qmlcompiler/qcoloroutput_p.h b/src/qmlcompiler/qcoloroutput_p.h
new file mode 100644
index 0000000000..6e5f919bed
--- /dev/null
+++ b/src/qmlcompiler/qcoloroutput_p.h
@@ -0,0 +1,112 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QCOLOROUTPUT_H
+#define QCOLOROUTPUT_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#include <QtCore/qglobal.h>
+#include <QtCore/qscopedpointer.h>
+#include <QtCore/qstring.h>
+
+class QColorOutputPrivate;
+
+class QColorOutput
+{
+    enum
+    {
+        ForegroundShift = 10,
+        BackgroundShift = 20,
+        SpecialShift    = 20,
+        ForegroundMask  = 0x1f << ForegroundShift,
+        BackgroundMask  = 0x7 << BackgroundShift
+    };
+
+public:
+    enum ColorCodeComponent
+    {
+        BlackForeground         = 1 << ForegroundShift,
+        BlueForeground          = 2 << ForegroundShift,
+        GreenForeground         = 3 << ForegroundShift,
+        CyanForeground          = 4 << ForegroundShift,
+        RedForeground           = 5 << ForegroundShift,
+        PurpleForeground        = 6 << ForegroundShift,
+        BrownForeground         = 7 << ForegroundShift,
+        LightGrayForeground     = 8 << ForegroundShift,
+        DarkGrayForeground      = 9 << ForegroundShift,
+        LightBlueForeground     = 10 << ForegroundShift,
+        LightGreenForeground    = 11 << ForegroundShift,
+        LightCyanForeground     = 12 << ForegroundShift,
+        LightRedForeground      = 13 << ForegroundShift,
+        LightPurpleForeground   = 14 << ForegroundShift,
+        YellowForeground        = 15 << ForegroundShift,
+        WhiteForeground         = 16 << ForegroundShift,
+
+        BlackBackground         = 1 << BackgroundShift,
+        BlueBackground          = 2 << BackgroundShift,
+        GreenBackground         = 3 << BackgroundShift,
+        CyanBackground          = 4 << BackgroundShift,
+        RedBackground           = 5 << BackgroundShift,
+        PurpleBackground        = 6 << BackgroundShift,
+        BrownBackground         = 7 << BackgroundShift,
+        DefaultColor            = 1 << SpecialShift
+    };
+
+    using ColorCode = QFlags<ColorCodeComponent>;
+    using ColorMapping = QHash<int, ColorCode>;
+
+    QColorOutput(bool silent);
+    ~QColorOutput();
+
+    void insertMapping(int colorID, ColorCode colorCode);
+
+    void writeUncolored(const QString &message);
+    void write(const QStringView message, int color = -1);
+    // handle QStringBuilder case
+    Q_WEAK_OVERLOAD void write(const QString &message, int color = -1) { write(QStringView(message), color); }
+    void writePrefixedMessage(const QString &message, QtMsgType type,
+                              const QString &prefix = QString());
+    QString colorify(QStringView message, int color = -1) const;
+
+private:
+    QScopedPointer<QColorOutputPrivate> d;
+    Q_DISABLE_COPY_MOVE(QColorOutput)
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QColorOutput::ColorCode)
+
+#endif // QCOLOROUTPUT_H