shapefile projection fix: save the real projection in .qpj next to th…

…e .prj file (fixes #2123 and #2154) git-svn-id: http://svn.osgeo.org/qgis/trunk@12274 c8812cc2-4d05-0410-92ff-de0c093fc19c
qgis · Nov 28, 2009 · 1712e42 · 1712e42
1 parent 6411c7f
commit 1712e42
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Showing 2 changed files with 47 additions and 26 deletions.
diff --git a/src/core/qgsvectorfilewriter.cpp b/src/core/qgsvectorfilewriter.cpp
@@ -95,15 +95,15 @@ QgsVectorFileWriter::QgsVectorFileWriter( const QString& shapefileName,
   }
 
   // datasource created, now create the output layer
-  QString layerName = shapefileName.left( shapefileName.lastIndexOf( ".shp", Qt::CaseInsensitive ) );
+  QString layerName = shapefileName.left( shapefileName.indexOf( ".shp", Qt::CaseInsensitive ) );
   OGRwkbGeometryType wkbType = static_cast<OGRwkbGeometryType>( geometryType );
   mLayer = OGR_DS_CreateLayer( mDS, QFile::encodeName( layerName ).data(), ogrRef, wkbType, NULL );
 
   if ( srs )
   {
-    if ( shapefileName != layerName )
+    if ( driverName == "ESRI Shapefile" )
     {
-      QFile prjFile( layerName + ".prj" );
+      QFile prjFile( layerName + ".qpj" );
       if ( prjFile.open( QIODevice::WriteOnly ) )
       {
         QTextStream prjStream( &prjFile );
@@ -112,7 +112,7 @@ QgsVectorFileWriter::QgsVectorFileWriter( const QString& shapefileName,
       }
       else
       {
-        QgsDebugMsg( "Couldn't open file " + layerName + ".prj" );
+        QgsDebugMsg( "Couldn't open file " + layerName + ".qpj" );
       }
     }
 
@@ -420,10 +420,10 @@ bool QgsVectorFileWriter::deleteShapeFile( QString theFileName )
   // TODO: should be case-insensitive
   //
   QString myFileBase = theFileName.replace( ".shp", "" );
-  bool ok = TRUE;
+  bool ok = true;
 
-  const char* suffixes[] = { ".shp", ".shx", ".dbf", ".prj", ".qix" };
-  for ( std::size_t i = 0; i < sizeof( suffixes ) / sizeof( char* ); i++ )
+  const char *suffixes[] = { ".shp", ".shx", ".dbf", ".prj", ".qix", ".qpj" };
+  for ( std::size_t i = 0; i < sizeof( suffixes ) / sizeof( *suffixes ); i++ )
   {
     QString file = myFileBase + suffixes[i];
     QFileInfo myInfo( file );
@@ -432,7 +432,7 @@ bool QgsVectorFileWriter::deleteShapeFile( QString theFileName )
       if ( !QFile::remove( file ) )
       {
         QgsDebugMsg( "Removing file failed : " + file );
-        ok = FALSE;
+        ok = false;
       }
     }
   }

diff --git a/src/providers/ogr/qgsogrprovider.cpp b/src/providers/ogr/qgsogrprovider.cpp
@@ -1026,6 +1026,7 @@ int QgsOgrProvider::capabilities() const
       ability |= ChangeGeometries;
     }
 
+#if 0
     if ( OGR_L_TestCapability( ogrLayer, "FastSpatialFilter" ) )
       // TRUE if this layer implements spatial filtering efficiently.
       // Layers that effectively read all features, and test them with the
@@ -1059,25 +1060,20 @@ int QgsOgrProvider::capabilities() const
     {
       // No use required for this QGIS release.
     }
+#endif
 
-    if ( 1 )
+    // OGR doesn't handle shapefiles without attributes, ie. missing DBFs well, fixes #803
+    if ( ogrDriverName == "ESRI Shapefile" )
     {
-      // Ideally this should test for Shapefile type and GDAL >= 1.2.6
-      // In reality, createSpatialIndex() looks after itself.
+#if defined(GDAL_VERSION_NUM) && GDAL_VERSION_NUM >= 1260
+      // test for Shapefile type and GDAL >= 1.2.6
       ability |= CreateSpatialIndex;
-    }
-
+#endif
 #if defined(GDAL_VERSION_NUM) && GDAL_VERSION_NUM >= 1600
-    // adding attributes was added in GDAL 1.6
-    if ( ogrDriverName.startsWith( "ESRI" ) )
-    {
+      // adding attributes was added in GDAL 1.6
       ability |= AddAttributes;
-    }
 #endif
 
-    // OGR doesn't handle shapefiles without attributes, ie. missing DBFs well, fixes #803
-    if ( ogrDriverName.startsWith( "ESRI" ) )
-    {
       if ( mAttributeFields.size() == 0 )
       {
         QgsDebugMsg( "OGR doesn't handle shapefile without attributes well, ie. missing DBFs" );
@@ -1586,10 +1582,12 @@ QGISEXTERN bool createEmptyDataSource( const QString& uri,
 
   OGR_DS_Destroy( dataSource );
 
-  if ( uri.endsWith( ".shp", Qt::CaseInsensitive ) )
+  QString driverName = OGR_Dr_GetName( driver );
+
+  if ( driverName == "ESRI Shapefile" )
   {
-    QString layerName = uri.left( uri.length() - 4 );
-    QFile prjFile( layerName + ".prj" );
+    QString layerName = uri.left( uri.indexOf( ".shp", Qt::CaseInsensitive ) );
+    QFile prjFile( layerName + ".qpj" );
     if ( prjFile.open( QIODevice::WriteOnly ) )
     {
       QTextStream prjStream( &prjFile );
@@ -1598,7 +1596,7 @@ QGISEXTERN bool createEmptyDataSource( const QString& uri,
     }
     else
     {
-      QgsDebugMsg( "Couldn't open file " + layerName + ".prj" );
+      QgsDebugMsg( "Couldn't open file " + layerName + ".qpj" );
     }
   }
 
@@ -1618,6 +1616,29 @@ QgsCoordinateReferenceSystem QgsOgrProvider::crs()
 
   QgsCoordinateReferenceSystem srs;
 
+  if ( ogrDriver )
+  {
+    QString driverName = OGR_Dr_GetName( ogrDriver );
+
+    if ( driverName == "ESRI Shapefile" )
+    {
+      QString layerName = mFilePath.left( mFilePath.indexOf( ".shp", Qt::CaseInsensitive ) );
+      QFile prjFile( layerName + ".qpj" );
+      if ( prjFile.open( QIODevice::ReadOnly ) )
+      {
+        QTextStream prjStream( &prjFile );
+        QString myWktString = prjStream.readLine();
+        prjFile.close();
+
+        // create CRS from Wkt
+        srs.createFromWkt( myWktString );
+
+        if ( srs.isValid() )
+          return srs;
+      }
+    }
+  }
+
   OGRSpatialReferenceH mySpatialRefSys = OGR_L_GetSpatialRef( ogrLayer );
   if ( mySpatialRefSys == NULL )
   {
@@ -1626,10 +1647,10 @@ QgsCoordinateReferenceSystem QgsOgrProvider::crs()
   else
   {
     // get the proj4 text
-    char * ppszProj4;
+    char *ppszProj4;
     OSRExportToProj4( mySpatialRefSys, &ppszProj4 );
     QgsDebugMsg( ppszProj4 );
-    char    *pszWkt = NULL;
+    char *pszWkt = NULL;
     OSRExportToWkt( mySpatialRefSys, &pszWkt );
     QString myWktString = QString( pszWkt );
     OGRFree( pszWkt );