Add a QgsProjectArchive class to keep QgsArchive generic

python/core/qgsarchive.sip

@@ -52,13 +52,12 @@ class QgsArchive
  :rtype: bool
 %End
 
-    bool unzip( const QString &zipFilename );
+    virtual bool unzip( const QString &zipFilename );
 %Docstring
- Clear the current content of this archive and unzip. If a project file
+ Clear the current content of this archive and unzip. Files are unzipped
- is found in the content, then this archive may be considered as a valid
+ in the temporary directory.
- one. Files are unzipped in the temporary directory.
  \param zipFilename The zip file to unzip
- :return: true if a project file has been found, false otherwise
+ :return: true if unzip action is a success, false otherwise
  :rtype: bool
 %End
 
@@ -97,12 +96,6 @@ class QgsArchive
  :rtype: str
 %End
 
-    QString projectFile() const;
-%Docstring
- Returns the current .qgs project file or an empty string if there's none
- :rtype: str
-%End
-
     QStringList files() const;
 %Docstring
  Returns the list of files within this archive
@@ -115,6 +108,34 @@ class QgsArchive
  :rtype: str
 %End
 
+  protected:
+
+};
+
+class QgsProjectArchive : QgsArchive
+{
+
+%TypeHeaderCode
+#include "qgsarchive.h"
+%End
+  public:
+
+    virtual bool unzip( const QString &zipFilename );
+
+%Docstring
+ Clear the current content of this archive and unzip. If a project file
+ is found in the content, then this archive may be considered as a valid
+ one. Files are unzipped in the temporary directory.
+ \param zipFilename The zip file to unzip
+ :return: true if a project file has been found, false otherwise
+ :rtype: bool
+%End
+
+    QString projectFile() const;
+%Docstring
+ Returns the current .qgs project file or an empty string if there's none
+ :rtype: str
+%End
 };
 
 /************************************************************************

src/core/qgsarchive.cpp

@@ -19,6 +19,7 @@
 #include "qgsarchive.h"
 #include "qgsziputils.h"
 #include "qgsmessagelog.h"
+#include <iostream>
 
 QgsArchive::QgsArchive()
   : mDir( new QTemporaryDir() )
@@ -26,8 +27,8 @@ QgsArchive::QgsArchive()
 }
 
 QgsArchive::QgsArchive( const QgsArchive &other )
-  :  mDir( new QTemporaryDir() )
+  : mFiles( other.mFiles )
-  , mFiles( other.mFiles )
+  ,  mDir( new QTemporaryDir() )
   , mFilename( other.mFilename )
 {
 }
@@ -108,11 +109,8 @@ bool QgsArchive::unzip()
 bool QgsArchive::unzip( const QString &filename )
 {
   clear();
-
-  QgsZipUtils::unzip( filename, mDir->path(), mFiles );
   mFilename = filename;
-
+  return QgsZipUtils::unzip( filename, mDir->path(), mFiles );
-  return ! projectFile().isEmpty();
 }
 
 void QgsArchive::addFile( const QString &file )
@@ -130,7 +128,12 @@ void QgsArchive::setFileName( const QString &filename )
   mFilename = filename;
 }
 
-QString QgsArchive::projectFile() const
+QStringList QgsArchive::files() const
+{
+  return mFiles;
+}
+
+QString QgsProjectArchive::projectFile() const
 {
   Q_FOREACH ( const QString &file, mFiles )
   {
@@ -142,7 +145,10 @@ QString QgsArchive::projectFile() const
   return QString();
 }
 
-QStringList QgsArchive::files() const
+bool QgsProjectArchive::unzip( const QString &filename )
 {
-  return mFiles;
+  if ( QgsArchive::unzip( filename ) )
+    return ! projectFile().isEmpty();
+  else
+    return false;
 }

src/core/qgsarchive.h

@@ -66,13 +66,12 @@ class CORE_EXPORT QgsArchive
     bool zip();
 
     /**
-     * Clear the current content of this archive and unzip. If a project file
+     * Clear the current content of this archive and unzip. Files are unzipped
-     * is found in the content, then this archive may be considered as a valid
+     * in the temporary directory.
-     * one. Files are unzipped in the temporary directory.
      * \param zipFilename The zip file to unzip
-     * \returns true if a project file has been found, false otherwise
+     * \returns true if unzip action is a success, false otherwise
      */
-    bool unzip( const QString &zipFilename );
+    virtual bool unzip( const QString &zipFilename );
 
     /**
      * Clear the current content of this archive and unzip. If a project file
@@ -107,11 +106,6 @@ class CORE_EXPORT QgsArchive
      */
     QString filename() const;
 
-    /**
-     * Returns the current .qgs project file or an empty string if there's none
-     */
-    QString projectFile() const;
-
     /**
      * Returns the list of files within this archive
      */
@@ -122,17 +116,37 @@ class CORE_EXPORT QgsArchive
      */
     QString dir() const;
 
+  protected:
+    // content of the archive
+    QStringList mFiles;
+
   private:
 #ifndef SIP_RUN
     // used when unzip is performed
     std::unique_ptr<QTemporaryDir> mDir;
 
-    // content of the archive
-    QStringList mFiles;
-
     // zip filename
     QString mFilename;
 #endif
 };
 
+class  CORE_EXPORT QgsProjectArchive : public QgsArchive
+{
+  public:
+
+    /**
+     * Clear the current content of this archive and unzip. If a project file
+     * is found in the content, then this archive may be considered as a valid
+     * one. Files are unzipped in the temporary directory.
+     * \param zipFilename The zip file to unzip
+     * \returns true if a project file has been found, false otherwise
+     */
+    bool unzip( const QString &zipFilename ) override;
+
+    /**
+     * Returns the current .qgs project file or an empty string if there's none
+     */
+    QString projectFile() const;
+};
+
 #endif

src/core/qgsproject.cpp

@@ -332,7 +332,7 @@ QgsProject::QgsProject( QObject *parent )
   , mLayoutManager( new QgsLayoutManager( this ) )
   , mRootGroup( new QgsLayerTree )
   , mLabelingEngineSettings( new QgsLabelingEngineSettings )
-  , mArchive( new QgsArchive() )
+  , mArchive( new QgsProjectArchive() )
   , mAutoTransaction( false )
   , mEvaluateDefaultValues( false )
   , mDirty( false )
@@ -2083,7 +2083,7 @@ bool QgsProject::unzip()
 bool QgsProject::unzip( const QString &filename )
 {
   clearError();
-  std::unique_ptr<QgsArchive> archive( new QgsArchive() );
+  std::unique_ptr<QgsProjectArchive> archive( new QgsProjectArchive() );
 
   // unzip the archive
   if ( !archive->unzip( filename ) )
@@ -2131,7 +2131,7 @@ bool QgsProject::zip( const QString &filename )
   clearError();
 
   // save the current project in a temporary .qgs file
-  std::unique_ptr<QgsArchive> archive( new QgsArchive() );
+  std::unique_ptr<QgsProjectArchive> archive( new QgsProjectArchive() );
   const QString baseName = QFileInfo( filename ).baseName();
   const QString qgsFileName = QString( "%1.qgs" ).arg( baseName );
   QFile qgsFile( QDir( archive->dir() ).filePath( qgsFileName ) );
@@ -2186,7 +2186,7 @@ QString QgsProject::zipFileName() const
 
 void QgsProject::setZipFileName( const QString &filename )
 {
-  mArchive.reset( new QgsArchive() );
+  mArchive.reset( new QgsProjectArchive() );
   mArchive->setFileName( filename );
 }
 

src/core/qgsproject.h

@@ -1099,7 +1099,7 @@ class CORE_EXPORT QgsProject : public QObject, public QgsExpressionContextGenera
 
     QString mPathResolverBaseName;
 
-    std::unique_ptr<QgsArchive> mArchive;
+    std::unique_ptr<QgsProjectArchive> mArchive;
     bool mUnzipping;
 
     QFile mFile;                 // current physical project file