qmlcachegen: Move resourcefilter.cpp into QmlCompiler

For backwards compatibility, a replacement for qmlcachegen will need to
provide the same functionality.

Change-Id: I22664230ea636d384190122223d15819ebee930c
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

4 files changed, 237 insertions, 2 deletions

diff --git a/src/qmlcompiler/CMakeLists.txt b/src/qmlcompiler/CMakeLists.txt
index d0e9be9418..f2180f35cd 100644
--- a/src/qmlcompiler/CMakeLists.txt
+++ b/src/qmlcompiler/CMakeLists.txt
@@ -17,6 +17,7 @@ qt_internal_add_module(QmlCompiler
         qqmljsstreamwriter.cpp qqmljsstreamwriter_p.h
         qqmljstypedescriptionreader.cpp qqmljstypedescriptionreader_p.h
         qqmljstypereader.cpp qqmljstypereader_p.h
+        qresourcerelocater.cpp qresourcerelocater_p.h
     PUBLIC_LIBRARIES
         Qt::CorePrivate
         Qt::QmlDevToolsPrivate
diff --git a/src/qmlcompiler/qmlcompiler.pro b/src/qmlcompiler/qmlcompiler.pro
index 37a1b44b9c..a8c81af081 100644
--- a/src/qmlcompiler/qmlcompiler.pro
+++ b/src/qmlcompiler/qmlcompiler.pro
@@ -10,7 +10,8 @@ SOURCES = \
     qqmljstypereader.cpp \
     qqmljsscope.cpp \
     qqmljstypedescriptionreader.cpp \
-    qqmljsstreamwriter.cpp
+    qqmljsstreamwriter.cpp \
+    qresourcerelocater.cpp
 
 HEADERS = \
     qdeferredpointer_p.h \
@@ -21,6 +22,7 @@ HEADERS = \
     qqmljsmetatypes_p.h \
     qqmljsscope_p.h \
     qqmljstypedescriptionreader_p.h \
-    qqmljsstreamwriter_p.h
+    qqmljsstreamwriter_p.h \
+    qresourcerelocater_p.h
 
 load(qt_module)
diff --git a/src/qmlcompiler/qresourcerelocater.cpp b/src/qmlcompiler/qresourcerelocater.cpp
new file mode 100644
index 0000000000..89158c1446
--- /dev/null
+++ b/src/qmlcompiler/qresourcerelocater.cpp
@@ -0,0 +1,182 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQml module 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qresourcerelocater_p.h"
+
+#include <QXmlStreamReader>
+#include <QFile>
+#include <QDir>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  Changes all the paths in resource file \a input so that they are relative to
+  location \a output and writes the result to resource file \a output.
+ */
+int qRelocateResourceFile(const QString &input, const QString &output)
+{
+    enum State {
+        InitialState,
+        InRCC,
+        InResource,
+        InFile
+    };
+    State state = InitialState;
+
+    QString prefix;
+    QString currentFileName;
+    QXmlStreamAttributes fileAttributes;
+
+    QFile file(input);
+    if (!file.open(QIODevice::ReadOnly)) {
+        fprintf(stderr, "Cannot open %s for reading.\n", qPrintable(input));
+        return EXIT_FAILURE;
+    }
+
+    QDir inputDirectory = QFileInfo(file).absoluteDir();
+    QDir outputDirectory = QFileInfo(output).absoluteDir();
+
+    QString outputString;
+    QXmlStreamWriter writer(&outputString);
+    writer.setAutoFormatting(true);
+
+    QXmlStreamReader reader(&file);
+    while (!reader.atEnd()) {
+        switch (reader.readNext()) {
+        case QXmlStreamReader::StartDocument: {
+            QStringView version = reader.documentVersion();
+            if (!version.isEmpty())
+                writer.writeStartDocument(version.toString());
+            else
+                writer.writeStartDocument();
+            break;
+        }
+        case QXmlStreamReader::EndDocument:
+            writer.writeEndDocument();
+            break;
+        case QXmlStreamReader::StartElement:
+            if (reader.name() == QStringLiteral("RCC")) {
+                if (state != InitialState) {
+                    fprintf(stderr, "Unexpected RCC tag in line %d\n", int(reader.lineNumber()));
+                    return EXIT_FAILURE;
+                }
+                state = InRCC;
+            } else if (reader.name() == QStringLiteral("qresource")) {
+                if (state != InRCC) {
+                    fprintf(stderr, "Unexpected qresource tag in line %d\n", int(reader.lineNumber()));
+                    return EXIT_FAILURE;
+                }
+                state = InResource;
+                QXmlStreamAttributes attributes = reader.attributes();
+                if (attributes.hasAttribute(QStringLiteral("prefix")))
+                    prefix = attributes.value(QStringLiteral("prefix")).toString();
+                if (!prefix.startsWith(QLatin1Char('/')))
+                    prefix.prepend(QLatin1Char('/'));
+                if (!prefix.endsWith(QLatin1Char('/')))
+                    prefix.append(QLatin1Char('/'));
+            } else if (reader.name() == QStringLiteral("file")) {
+                if (state != InResource) {
+                    fprintf(stderr, "Unexpected file tag in line %d\n", int(reader.lineNumber()));
+                    return EXIT_FAILURE;
+                }
+                state = InFile;
+                fileAttributes = reader.attributes();
+                continue;
+            }
+            writer.writeStartElement(reader.name().toString());
+            writer.writeAttributes(reader.attributes());
+            continue;
+
+        case QXmlStreamReader::EndElement:
+            if (reader.name() == QStringLiteral("file")) {
+                if (state != InFile) {
+                    fprintf(stderr, "Unexpected end of file tag in line %d\n", int(reader.lineNumber()));
+                    return EXIT_FAILURE;
+                }
+                state = InResource;
+                continue;
+            } else if (reader.name() == QStringLiteral("qresource")) {
+                if (state != InResource) {
+                    fprintf(stderr, "Unexpected end of qresource tag in line %d\n", int(reader.lineNumber()));
+                    return EXIT_FAILURE;
+                }
+                state = InRCC;
+            } else if (reader.name() == QStringLiteral("RCC")) {
+                if (state != InRCC) {
+                    fprintf(stderr, "Unexpected end of RCC tag in line %d\n", int(reader.lineNumber()));
+                    return EXIT_FAILURE;
+                }
+                state = InitialState;
+            }
+            writer.writeEndElement();
+            continue;
+
+        case QXmlStreamReader::Characters:
+            if (reader.isWhitespace())
+                break;
+            if (state != InFile)
+                return EXIT_FAILURE;
+            currentFileName = reader.text().toString();
+            if (currentFileName.isEmpty())
+                continue;
+
+            writer.writeStartElement(QStringLiteral("file"));
+
+            if (!fileAttributes.hasAttribute(QStringLiteral("alias")))
+                fileAttributes.append(QStringLiteral("alias"), currentFileName);
+
+            currentFileName = inputDirectory.absoluteFilePath(currentFileName);
+            currentFileName = outputDirectory.relativeFilePath(currentFileName);
+
+            writer.writeAttributes(fileAttributes);
+            writer.writeCharacters(currentFileName);
+            writer.writeEndElement();
+            continue;
+
+        default: break;
+    }
+    }
+
+    QFile outputFile(output);
+    if (!outputFile.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
+        fprintf(stderr, "Cannot open %s for writing.\n", qPrintable(output));
+        return EXIT_FAILURE;
+    }
+    const QByteArray outputStringUtf8 = outputString.toUtf8();
+    if (outputFile.write(outputStringUtf8) != outputStringUtf8.size())
+        return EXIT_FAILURE;
+
+    outputFile.close();
+    if (outputFile.error() != QFileDevice::NoError)
+        return EXIT_FAILURE;
+
+
+    return EXIT_SUCCESS;
+}
+
+QT_END_NAMESPACE
diff --git a/src/qmlcompiler/qresourcerelocater_p.h b/src/qmlcompiler/qresourcerelocater_p.h
new file mode 100644
index 0000000000..5b75a424e6
--- /dev/null
+++ b/src/qmlcompiler/qresourcerelocater_p.h
@@ -0,0 +1,50 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 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 QRESOURCERELOCATER_P_H
+#define QRESOURCERELOCATER_P_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/qstring.h>
+
+QT_BEGIN_NAMESPACE
+
+int qRelocateResourceFile(const QString &input, const QString &output);
+
+QT_END_NAMESPACE
+
+#endif // QRESOURCERELOCATER_P_H