added the PS/EPS import module (was missing in r802)

git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@807 bbaffbd6-741e-11dd-a85d-61de82d9cad9

src/pycam/Importers/PSImporter.py

+# -*- coding: utf-8 -*-
+"""
+$Id$
+
+Copyright 2010 Lars Kruse <devel@sumpfralle.de>
+
+This file is part of PyCAM.
+
+PyCAM is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+PyCAM is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with PyCAM.  If not, see <http://www.gnu.org/licenses/>.
+"""
+
+from pycam.Importers.SVGImporter import convert_eps2dxf
+import pycam.Importers.DXFImporter
+import tempfile
+import subprocess
+import os
+
+log = pycam.Utils.log.get_logger()
+
+
+def import_model(filename, program_locations=None, unit=None):
+    if not os.path.isfile(filename):
+        log.error("PSImporter: file (%s) does not exist" % filename)
+        return None
+
+    if program_locations and "pstoedit" in program_locations:
+        pstoedit_path = program_locations["pstoedit"]
+    else:
+        pstoedit_path = None
+
+    def remove_temp_file(filename):
+        if os.path.isfile(filename):
+            try:
+                os.remove(filename)
+            except OSError, err_msg:
+                log.warn("PSImporter: failed to remove temporary file " \
+                        + "(%s): %s" % (filename, err_msg))
+
+    # convert eps to dxf via pstoedit
+    dxf_file_handle, dxf_file_name = tempfile.mkstemp(suffix=".dxf")
+    os.close(dxf_file_handle)
+    success = convert_eps2dxf(filename, dxf_file_name, location=pstoedit_path)
+    if not success:
+        result = None
+    else:
+        log.info("Successfully converted PS file to DXF file")
+        result = pycam.Importers.DXFImporter.import_model(dxf_file_name, unit=unit)
+    # always remove the dxf file
+    remove_temp_file(dxf_file_name)
+    return result
+