start implementing SimpleReader

src/Mod/Import/App/SCL/SimpleReader.py

@@ -0,0 +1,103 @@
+# Copyright (c) 2014, Juergen Riegel (FreeCAD@juergen-riegel.net)
+# Copyright (c) 2011, Thomas Paviot (tpaviot@gmail.com)
+# All rights reserved.
+
+# This file is part of the StepClassLibrary (SCL).
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+#   Redistributions of source code must retain the above copyright notice,
+#   this list of conditions and the following disclaimer.
+#
+#   Redistributions in binary form must reproduce the above copyright notice,
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+#
+#   Neither the name of the <ORGANIZATION> nor the names of its contributors may
+#   be used to endorse or promote products derived from this software without
+#   specific prior written permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.
+# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+"""Simple Part21 STEP reader
+
+Reads a given STEP file. Maps the enteties and instaciate the
+corosbonding classes.
+In addition it writes out a graphwiz file with the entity graph.
+"""
+
+import Part21,sys
+
+
+
+__title__="Simple Part21 STEP reader"
+__author__ = "Juergen Riegel, Thomas Paviot"
+__url__ = "http://www.freecadweb.org"
+__version__ = "0.1 (Jan 2014)"
+
+
+
+class SimpleParser:
+    """
+    Loads all instances definition of a Part21 file into memory.
+    Two dicts are created:
+    self._instance_definition : stores attibutes, key is the instance integer id
+    self._number_of_ancestors : stores the number of ancestors of entity id. This enables
+    to define the order of instances creation.
+    """
+    def __init__(self, filename):
+        import time
+        import sys
+        self._p21loader = Part21.Part21Parser("gasket1.p21")
+        self.schemaModule = None
+        self.schemaClasses = None
+
+    def instaciate(self):
+        """Instaciate the python classe from the enteties"""
+        import inspect
+        # load the needed schema module
+        if self._p21loader.get_schema_name() == 'config_control_design':
+            import config_control_design
+            self.schemaModule = config_control_design
+        if self._p21loader.get_schema_name() == 'automotive_design':
+            import automotive_design
+            self.schemaModule = automotive_design
+
+        if self.schemaModule:
+            self.schemaClasses = dict(inspect.getmembers(self.schemaModule))
+
+        for number_of_ancestor in self._p21loader._number_of_ancestors.keys():
+            for entity_definition_id in self._p21loader._number_of_ancestors[number_of_ancestor]:
+                #print entity_definition_id,':',self._p21loader._instances_definition[entity_definition_id]
+                self.create_entity_instance(entity_definition_id)
+
+    def create_entity_instance(self, instance_id):
+        instance_definition = self._p21loader._instances_definition[instance_id]
+        print "Instance definition to process",instance_definition
+        # first find class name
+        class_name = instance_definition[0].lower()
+        print "Class name:%s"%class_name
+
+        if not class_name=='':
+            object_ = self.schemaClasses[class_name]
+            # then attributes
+            print object_.__doc__
+        #instance_attributes = instance_definition[1]
+        #print "instance_attributes:",instance_attributes
+        #a = object_(*instance_attributes)
+
+if __name__ == "__main__":
+    sys.path.append('..') # path where config_control_design.py is found
+    parser = SimpleParser("gasket1.p21") # simple test file
+    parser.instaciate()