Remove the support for reading python plugin metadata from __init__.py

From now on, plugins must have metadata.txt file (with INI format)
that is used for storing of metadata. This has two advantages:
- plugins do not need to be loaded in order to read metadata
- repository can parse the metadata more easily

python/plugins/GdalTools/CMakeLists.txt

@@ -9,7 +9,7 @@ PYQT4_ADD_RESOURCES(PYRC_FILES resources.qrc)
 SET(INSTALLER_FILES ${INSTALLER_FILES} ${PYUI_FILES} ${PYRC_FILES})
 
 #INSTALL(FILES ${INSTALLER_FILES} DESTINATION ${QGIS_DATA_DIR}/python/plugins/GdalTools)
-PLUGIN_INSTALL(GdalTools . ${INSTALLER_FILES} __init__.py)
+PLUGIN_INSTALL(GdalTools . ${INSTALLER_FILES} __init__.py metadata.txt)
 
 ADD_SUBDIRECTORY(tools)
 ADD_SUBDIRECTORY(icons)

python/plugins/GdalTools/__init__.py

@@ -17,18 +17,6 @@
  ***************************************************************************/
  This script initializes the plugin, making it known to QGIS.
 """
-def name():
-  return "GdalTools"
-def description():
-  return "Integrate gdal tools into qgis"
-def category():
-  return "Raster"
-def version():
-  return "Version 1.2.29"
-def qgisMinimumVersion():
-  return "1.0"
-def icon():
-  return "icons/raster-info.png"
 def classFactory(iface):
   # load GdalTools class from file GdalTools
   from GdalTools import GdalTools

python/plugins/db_manager/CMakeLists.txt

@@ -8,5 +8,5 @@ FILE(GLOB UI_FILES ui/*.ui)
 PYQT4_WRAP_UI(PYUI_FILES ${UI_FILES})
 PYQT4_ADD_RESOURCES(PYRC_FILES resources.qrc)
 
-PLUGIN_INSTALL(db_manager . ${OTHER_FILES} ${PY_FILES} ${PYRC_FILES}) 
+PLUGIN_INSTALL(db_manager . ${OTHER_FILES} ${PY_FILES} ${PYRC_FILES} metadata.txt)
 PLUGIN_INSTALL(db_manager ui ${PYUI_FILES} ui/__init__.py)

python/plugins/db_manager/__init__.py

@@ -20,24 +20,6 @@
  ***************************************************************************/
 """
 
-def name():
-	return "DB Manager"
-
-def description():
-	return "Manage your databases within QGis"
-
-def version():
-	return "0.1.20"
-
-def qgisMinimumVersion():
-	return "1.5.0"
-
-def icon():
-	return "icons/dbmanager.png"
-
-def authorName():
-	return "Giuseppe Sucameli"
-
 def classFactory(iface):
 	from .db_manager_plugin import DBManagerPlugin
 	return DBManagerPlugin(iface)

python/plugins/fTools/CMakeLists.txt

@@ -5,7 +5,7 @@ PYQT4_ADD_RESOURCES(PYRC_FILES resources.qrc)
 
 SET(INSTALLER_FILES ${INSTALLER_FILES} ${PYUI_FILES} ${PYRC_FILES})
 
-PLUGIN_INSTALL(fTools . ${INSTALLER_FILES} __init__.py)
+PLUGIN_INSTALL(fTools . ${INSTALLER_FILES} __init__.py metadata.txt)
 
 ADD_SUBDIRECTORY(tools)
 ADD_SUBDIRECTORY(icons)

python/plugins/fTools/__init__.py

@@ -28,27 +28,6 @@
 #
 #---------------------------------------------------------------------
 
-def name():
-  return "fTools"
-
-def description():
-  return "Tools for vector data analysis and management"
-
-def category():
-  return "Vector"
-
-def version():
-  return "0.6.2"
-
-def qgisMinimumVersion():
-  return "1.4"
-
-def icon():
-  return "icons/logo_small.png"
-
-def authorName():
-  return "Carson J. Q. Farmer"
-
 def classFactory( iface ):
   from .fTools import fToolsPlugin
   return fToolsPlugin( iface )

python/plugins/mapserver_export/CMakeLists.txt

@@ -1,4 +1,5 @@
 SET(INSTALLER_FILES
+        metadata.txt
         mapserver_export.png
         __init__.py
         mapserverexportdialog.py

python/plugins/mapserver_export/__init__.py

@@ -19,20 +19,6 @@
  This script initializes the plugin, making it known to QGIS.
 """
 
-def name():
-  return "MapServer Export"
-def description():
-  return "Export a saved QGIS project file to a MapServer map file"
-def category():
-  return "Web"
-def version():
-  return "Version 0.4.4"
-def qgisMinimumVersion():
-  return "1.0"
-def icon():
-  return "mapserver_export.png"
-def authorName():
-  return "Gary E. Sherman"
 def classFactory(iface):
   # load MapServerExport class from file mapserverexport.py
   from mapserverexport import MapServerExport

python/plugins/plugin_installer/CMakeLists.txt

@@ -1,4 +1,5 @@
 SET(INSTALLER_FILES
+metadata.txt
 __init__.py
 installer_data.py
 installer_gui.py

python/plugins/plugin_installer/__init__.py

@@ -11,30 +11,6 @@
  *                                                                         *
  ***************************************************************************/
 """
-def name():
-  return "Plugin Installer"
-
-def version():
-  return "Version 1.2.1"
-
-def description():
-  return "Downloads and installs QGIS python plugins"
-
-def category():
-  return "Plugins"
-
-def qgisMinimumVersion():
-  return "1.0"
-
-def icon():
-  import resources_rc
-  return ":/plugins/installer/plugin_installer.png"
-
-def authorName():
-  return "Matthew Perry, Borys Jurgiel"
-
-def homepage():
-  return "http://bwj.aster.net.pl/qgis/"
 
 def classFactory(iface):
   from installer_plugin import InstallerPlugin

python/utils.py

@@ -119,21 +119,25 @@ def findPlugins(path):
   """ for internal use: return list of plugins in given path """
   plugins = []
   for plugin in glob.glob(path + "/*"):
-    if os.path.isdir(plugin) and os.path.exists(os.path.join(plugin, '__init__.py')):
-      plugins.append( os.path.basename(plugin) )
+    if not os.path.isdir(plugin):
+      continue
+    if not os.path.exists(os.path.join(plugin, '__init__.py')):
+      continue
+
+    metadataFile = os.path.join(plugin, 'metadata.txt')
+    if not os.path.exists(metadataFile):
+      continue
+
+    cp = ConfigParser.ConfigParser()
+    res = cp.read(metadataFile)
+    if len(res) == 0:
+      return None # reading of metadata file failed
+
+    pluginName = os.path.basename(plugin)
+    plugins.append( (pluginName, cp) )
+
   return plugins
 
-def _checkMetadataFile(pluginpath, plugin):
-  """ Check whether there exists a metadata.txt file.
-      That is now a preferred way to store plugin's metadata """
-  metadataFile = os.path.join(pluginpath, plugin, 'metadata.txt')
-  if not os.path.exists(metadataFile):
-    return None
-  cp = ConfigParser.ConfigParser()
-  res = cp.read(metadataFile)
-  if len(res) == 0:
-    return None # reading of metadata file failed
-  return cp
 
 def updateAvailablePlugins():
   """ go thrgouh the plugin_paths list and find out what plugins are available """
@@ -142,10 +146,10 @@ def updateAvailablePlugins():
   metadata_parser = {}
   for pluginpath in plugin_paths:
     for p in findPlugins(pluginpath):
-      if p not in plugins:
-        plugins.append(p)
-        cp = _checkMetadataFile(pluginpath, p)
-        if cp: metadata_parser[p] = cp
+      pluginName = p[0]
+      if pluginName not in plugins:
+        plugins.append(pluginName)
+        metadata_parser[pluginName] = p[1]
 
   global available_plugins
   available_plugins = plugins
@@ -154,14 +158,13 @@ def updateAvailablePlugins():
 
 
 def pluginMetadata(packageName, fct):
-  """ fetch metadata from a plugin """
-
-  # use values from metadata.txt
-  if plugins_metadata_parser.has_key(packageName):
+  """ fetch metadata from a plugin - use values from metadata.txt """
+  try:
     return plugins_metadata_parser[packageName].get('general', fct)
-  else:
+  except Exception:
     return "__error__"
 
+
 def loadPlugin(packageName):
   """ load plugin's package """
 

src/app/qgspluginregistry.cpp

@@ -250,6 +250,8 @@ void QgsPluginRegistry::loadPythonPlugin( QString packageName )
     // if plugin is not compatible, disable it
     if ( ! isPythonPluginCompatible( packageName ) )
     {
+      QgsMessageLog::logMessage( QObject::tr("Plugin \"%1\" is not compatible with this version of Quantum GIS.\nIt will be disabled.").arg( packageName ),
+                                 QObject::tr( "Plugins" ) );
       settings.setValue( "/PythonPlugins/" + packageName, false );
       return;
     }
@@ -496,28 +498,20 @@ bool QgsPluginRegistry::checkCppPlugin( QString pluginFullPath )
 
 bool QgsPluginRegistry::checkPythonPlugin( QString packageName )
 {
-  // import plugin's package
-  if ( !mPythonUtils->loadPlugin( packageName ) )
-    return false;
-
-  QString pluginName, description, category, version;
+  QString pluginName, description, /*category,*/ version;
 
   // get information from the plugin
   // if there are some problems, don't continue with metadata retreival
-  pluginName = mPythonUtils->getPluginMetadata( packageName, "name" );
-  if ( pluginName != "__error__" )
-  {
-    description = mPythonUtils->getPluginMetadata( packageName, "description" );
-    if ( description != "__error__" )
-      version = mPythonUtils->getPluginMetadata( packageName, "version" );
-    // for Python plugins category still optional, by default used "Plugins" category
-    //category = mPythonUtils->getPluginMetadata( packageName, "category" );
-  }
+  pluginName  = mPythonUtils->getPluginMetadata( packageName, "name" );
+  description = mPythonUtils->getPluginMetadata( packageName, "description" );
+  version     = mPythonUtils->getPluginMetadata( packageName, "version" );
+  // for Python plugins category still optional, by default used "Plugins" category
+  //category = mPythonUtils->getPluginMetadata( packageName, "category" );
 
   if ( pluginName == "__error__" || description == "__error__" || version == "__error__" )
   {
-    QMessageBox::warning( mQgisInterface->mainWindow(), QObject::tr( "Python error" ),
-                          QObject::tr( "Error when reading metadata of plugin %1" ).arg( packageName ) );
+    QgsMessageLog::logMessage( QObject::tr( "Error when reading metadata of plugin %1" ).arg( packageName ),
+                               QObject::tr( "Plugins" ) );
     return false;
   }
 
@@ -527,15 +521,7 @@ bool QgsPluginRegistry::checkPythonPlugin( QString packageName )
 bool QgsPluginRegistry::isPythonPluginCompatible( QString packageName )
 {
   QString minVersion = mPythonUtils->getPluginMetadata( packageName, "qgisMinimumVersion" );
-  if ( minVersion == "__error__" || !checkQgisVersion( minVersion ) )
-  {
-    //QMessageBox::information(mQgisInterface->mainWindow(),
-    //   QObject::tr("Incompatible plugin"),
-    //   QObject::tr("Plugin \"%1\" is not compatible with this version of Quantum GIS.\nIt will be disabled.").arg(pluginName));
-    //settings.setValue( "/PythonPlugins/" + packageName, false );
-    return false;
-  }
-  return true;
+  return minVersion != "__error__" && checkQgisVersion( minVersion );
 }
 
 QList<QgsPluginMetadata*> QgsPluginRegistry::pluginData()