[processing] add function to retrieve Processing version

Initial idea by Etienne Trimaille

python/plugins/processing/tests/AlgorithmsTestBase.py

@@ -54,6 +54,8 @@ class AlgorithmsTest:
         """
         This is the main test function. All others will be executed based on the definitions in testdata/algorithm_tests.yaml
         """
+        ver = processing.version()
+        print "Processing {}.{}.{}".format(ver / 10000, ver / 100 % 100, ver % 100)
         with open(os.path.join(processingTestDataPath(), self.test_definition_file()), 'r') as stream:
             algorithm_tests = yaml.load(stream)
 

python/plugins/processing/tools/general.py

@@ -25,6 +25,9 @@ __copyright__ = '(C) 2013, Victor Olaya'
 
 __revision__ = '$Format:%H$'
 
+import os
+import ConfigParser
+
 from processing.core.Processing import Processing
 from processing.gui.Postprocessing import handleAlgorithmResults
 from processing.core.parameters import ParameterSelection
@@ -75,3 +78,11 @@ def runalg(algOrName, *args, **kwargs):
 
 def runandload(name, *args, **kwargs):
     return Processing.runAlgorithm(name, handleAlgorithmResults, *args, **kwargs)
+
+
+def version():
+    pluginPath = os.path.split(os.path.dirname(__file__))[0]
+    cfg = ConfigParser.SafeConfigParser()
+    cfg.read(os.path.join(pluginPath, 'metadata.txt'))
+    ver = cfg.get('general', 'version').split('.')
+    return 10000 * int(ver[0]) + 100 * int(ver[1]) + int(ver[2])