/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/save.py
ViewVC logotype

Diff of /branches/WIP-pyshapelib-bramz/Thuban/Model/save.py

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

trunk/thuban/Thuban/Model/save.py revision 1417 by bh, Tue Jul 15 08:43:53 2003 UTC branches/WIP-pyshapelib-bramz/Thuban/Model/save.py revision 2734 by bramz, Thu Mar 1 12:42:59 2007 UTC
# Line 1  Line 1 
1  # Copyright (c) 2001, 2002, 2003 by Intevation GmbH  # Copyright (c) 2001-2005 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jan-Oliver Wagner <[email protected]>  # Jan-Oliver Wagner <[email protected]> (2004-2005)
4  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]> (2001-2004)
5  # Jonathan Coles <[email protected]>  # Jonathan Coles <[email protected]> (2003)
6    # Frank Koormann <[email protected]> (2003)
7  #  #
8  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
9  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
# Line 12  Functions to save a session to a file Line 13  Functions to save a session to a file
13  """  """
14    
15  __version__ = "$Revision$"  __version__ = "$Revision$"
16    # $Source$
17    # $Id$
18    
19  import os  import os
20    
# Line 20  import Thuban.Lib.fileutil Line 23  import Thuban.Lib.fileutil
23  from Thuban.Model.layer import Layer, RasterLayer  from Thuban.Model.layer import Layer, RasterLayer
24    
25  from Thuban.Model.classification import \  from Thuban.Model.classification import \
26      ClassGroupDefault, ClassGroupSingleton, ClassGroupRange, ClassGroupMap      ClassGroupDefault, ClassGroupSingleton, ClassGroupRange, \
27        ClassGroupPattern, ClassGroupMap
28  from Thuban.Model.transientdb import AutoTransientTable, TransientJoinedTable  from Thuban.Model.transientdb import AutoTransientTable, TransientJoinedTable
29  from Thuban.Model.table import DBFTable, FIELDTYPE_STRING  from Thuban.Model.table import DBFTable, FIELDTYPE_STRING
30  from Thuban.Model.data import DerivedShapeStore, ShapefileStore  from Thuban.Model.data import DerivedShapeStore, FileShapeStore, \
31                                  SHAPETYPE_POINT
32    
33  from Thuban.Model.xmlwriter import XMLWriter  from Thuban.Model.xmlwriter import XMLWriter
34    from postgisdb import PostGISConnection, PostGISShapeStore
35    
36  def relative_filename(dir, filename):  def relative_filename(dir, filename):
37      """Return a filename relative to dir for the absolute file name absname.      """Return a filename relative to dir for the absolute file name absname.
# Line 40  def relative_filename(dir, filename): Line 46  def relative_filename(dir, filename):
46          return filename          return filename
47    
48    
49    def unify_filename(filename):
50        """Return a 'unified' version of filename
51    
52        The .thuban files should be as platform independent as possible.
53        Since they must contain filenames the filenames have to unified. We
54        unify on unix-like filenames for now, which means we do nothing on a
55        posix system and simply replace backslashes with slashes on windows
56        """
57        if os.name == "posix":
58            return filename
59        elif os.name == "nt":
60            return "/".join(filename.split("\\"))
61        else:
62            raise RuntimeError("Unsupported platform for unify_filename: %s"
63                               % os.name)
64    
65  def sort_data_stores(stores):  def sort_data_stores(stores):
66      """Return a topologically sorted version of the sequence of data containers      """Return a topologically sorted version of the sequence of data containers
67    
# Line 69  def sort_data_stores(stores): Line 91  def sort_data_stores(stores):
91              processed[id(container)] = 1              processed[id(container)] = 1
92      return result      return result
93    
94    def bool2str(b):
95        if b: return "true"
96        else: return "false"
97    
98  class SessionSaver(XMLWriter):  class SessionSaver(XMLWriter):
99    
# Line 102  class SessionSaver(XMLWriter): Line 127  class SessionSaver(XMLWriter):
127      def has_id(self, obj):      def has_id(self, obj):
128          return self.idmap.has_key(id(obj))          return self.idmap.has_key(id(obj))
129    
130        def prepare_filename(self, filename):
131            """Return the string to use when writing filename to the thuban file
132    
133            The returned string is a unified version (only slashes as
134            directory separators, see unify_filename) of filename expressed
135            relative to the directory the .thuban file is written to.
136            """
137            return unify_filename(relative_filename(self.dir, filename))
138    
139      def write(self, file_or_filename):      def write(self, file_or_filename):
140          XMLWriter.write(self, file_or_filename)          XMLWriter.write(self, file_or_filename)
141    
142          self.write_header("session", "thuban-0.9.dtd")          self.write_header("session", "thuban-1.1.dtd")
143          self.write_session(self.session)          self.write_session(self.session)
144          self.close()          self.close()
145    
# Line 132  class SessionSaver(XMLWriter): Line 166  class SessionSaver(XMLWriter):
166              attrs["xmlns:" + name] = uri              attrs["xmlns:" + name] = uri
167          # default name space          # default name space
168          attrs["xmlns"] = \          attrs["xmlns"] = \
169                 "http://thuban.intevation.org/dtds/thuban-0.9-dev.dtd"                 "http://thuban.intevation.org/dtds/thuban-1.1-dev.dtd"
170          self.open_element("session", attrs)          self.open_element("session", attrs)
171            self.write_db_connections(session)
172          self.write_data_containers(session)          self.write_data_containers(session)
173          for map in session.Maps():          for map in session.Maps():
174              self.write_map(map)              self.write_map(map)
175          self.close_element("session")          self.close_element("session")
176    
177        def write_db_connections(self, session):
178            for conn in session.DBConnections():
179                if isinstance(conn, PostGISConnection):
180                    self.write_element("dbconnection",
181                                       {"id": self.define_id(conn),
182                                        "dbtype": "postgis",
183                                        "host": conn.host,
184                                        "port": conn.port,
185                                        "user": conn.user,
186                                        "dbname": conn.dbname})
187                else:
188                    raise ValueError("Can't handle db connection %r" % conn)
189    
190      def write_data_containers(self, session):      def write_data_containers(self, session):
191          containers = sort_data_stores(session.DataContainers())          containers = sort_data_stores(session.DataContainers())
192          for container in containers:          for container in containers:
# Line 154  class SessionSaver(XMLWriter): Line 202  class SessionSaver(XMLWriter):
202                  continue                  continue
203    
204              idvalue = self.define_id(container)              idvalue = self.define_id(container)
205              if isinstance(container, ShapefileStore):              if isinstance(container, FileShapeStore):
206                  self.define_id(container.Table(), idvalue)                  self.define_id(container.Table(), idvalue)
207                  filename = relative_filename(self.dir, container.FileName())                  filename = self.prepare_filename(container.FileName())
208                  self.write_element("fileshapesource",                  self.write_element("fileshapesource",
209                                     {"id": idvalue, "filename": filename,                                     {"id": idvalue, "filename": filename,
210                                      "filetype": "shapefile"})                                      "filetype": container.FileType()})
211              elif isinstance(container, DerivedShapeStore):              elif isinstance(container, DerivedShapeStore):
212                  shapesource, table = container.Dependencies()                  shapesource, table = container.Dependencies()
213                  self.write_element("derivedshapesource",                  self.write_element("derivedshapesource",
214                                     {"id": idvalue,                                     {"id": idvalue,
215                                      "shapesource": self.get_id(shapesource),                                      "shapesource": self.get_id(shapesource),
216                                      "table": self.get_id(table)})                                      "table": self.get_id(table)})
217                elif isinstance(container, PostGISShapeStore):
218                    conn = container.DBConnection()
219                    self.write_element("dbshapesource",
220                                       {"id": idvalue,
221                                        "dbconn": self.get_id(conn),
222                                        "tablename": container.TableName(),
223                                        "id_column": container.IDColumn().name,
224                                        "geometry_column":
225                                          container.GeometryColumn().name,
226                                        })
227              elif isinstance(container, DBFTable):              elif isinstance(container, DBFTable):
228                  filename = relative_filename(self.dir, container.FileName())                  filename = self.prepare_filename(container.FileName())
229                  self.write_element("filetable",                  self.write_element("filetable",
230                                     {"id": idvalue,                                     {"id": idvalue,
231                                      "title": container.Title(),                                      "title": container.Title(),
# Line 208  class SessionSaver(XMLWriter): Line 266  class SessionSaver(XMLWriter):
266          """Write the projection.          """Write the projection.
267          """          """
268          if projection and len(projection.params) > 0:          if projection and len(projection.params) > 0:
269              self.open_element("projection", {"name": projection.GetName()})              attrs = {"name": projection.GetName()}
270                epsg = projection.EPSGCode()
271                if epsg is not None:
272                    attrs["epsg"] = epsg
273                self.open_element("projection", attrs)
274              for param in projection.params:              for param in projection.params:
275                  self.write_element('parameter value="%s"' %                  self.write_element('parameter value="%s"' %
276                                     self.encode(param))                                     self.encode(param))
# Line 226  class SessionSaver(XMLWriter): Line 288  class SessionSaver(XMLWriter):
288              attrs = {}              attrs = {}
289    
290          attrs["title"]   = layer.title          attrs["title"]   = layer.title
291          attrs["visible"] = ("false", "true")[int(layer.Visible())]          attrs["visible"] = bool2str(layer.Visible())
292    
293          if isinstance(layer, Layer):          if isinstance(layer, Layer):
294              attrs["shapestore"]   = self.get_id(layer.ShapeStore())              attrs["shapestore"]   = self.get_id(layer.ShapeStore())
   
             lc = layer.GetClassification()  
             attrs["stroke"] = lc.GetDefaultLineColor().hex()  
             attrs["stroke_width"] = str(lc.GetDefaultLineWidth())  
             attrs["fill"] = lc.GetDefaultFill().hex()  
   
295              self.open_element("layer", attrs)              self.open_element("layer", attrs)
296              self.write_projection(layer.GetProjection())              self.write_projection(layer.GetProjection())
297              self.write_classification(layer)              self.write_classification(layer)
298              self.close_element("layer")              self.close_element("layer")
299          elif isinstance(layer, RasterLayer):          elif isinstance(layer, RasterLayer):
300              attrs["filename"] = relative_filename(self.dir, layer.filename)              attrs["filename"] = self.prepare_filename(layer.filename)
301    
302                masknames = ["none", "bit", "alpha"]
303    
304                if layer.MaskType() != layer.MASK_BIT:
305                    attrs["masktype"] = masknames[layer.MaskType()]
306    
307                if layer.Opacity() != 1:
308                    attrs["opacity"] = str(layer.Opacity())
309    
310              self.open_element("rasterlayer", attrs)              self.open_element("rasterlayer", attrs)
311              self.write_projection(layer.GetProjection())              self.write_projection(layer.GetProjection())
312              self.close_element("rasterlayer")              self.close_element("rasterlayer")
# Line 254  class SessionSaver(XMLWriter): Line 319  class SessionSaver(XMLWriter):
319    
320          lc = layer.GetClassification()          lc = layer.GetClassification()
321    
322          field = lc.GetField()          field = layer.GetClassificationColumn()
323    
324          #          if field is not None:
325          # there isn't a classification of anything so do nothing              attrs["field"] = field
326          #              attrs["field_type"] = str(layer.GetFieldType(field))
         if field is None: return  
327    
         attrs["field"] = field  
         attrs["field_type"] = str(lc.GetFieldType())  
328          self.open_element("classification", attrs)          self.open_element("classification", attrs)
329    
330          for g in lc:          for g in lc:
# Line 270  class SessionSaver(XMLWriter): Line 332  class SessionSaver(XMLWriter):
332                  open_el  = 'clnull label="%s"' % self.encode(g.GetLabel())                  open_el  = 'clnull label="%s"' % self.encode(g.GetLabel())
333                  close_el = 'clnull'                  close_el = 'clnull'
334              elif isinstance(g, ClassGroupSingleton):              elif isinstance(g, ClassGroupSingleton):
335                  if lc.GetFieldType() == FIELDTYPE_STRING:                  if layer.GetFieldType(field) == FIELDTYPE_STRING:
336                      value = self.encode(g.GetValue())                      value = self.encode(g.GetValue())
337                  else:                  else:
338                      value = str(g.GetValue())                      value = str(g.GetValue())
# Line 281  class SessionSaver(XMLWriter): Line 343  class SessionSaver(XMLWriter):
343                  open_el  = 'clrange label="%s" range="%s"' \                  open_el  = 'clrange label="%s" range="%s"' \
344                            % (self.encode(g.GetLabel()), str(g.GetRange()))                            % (self.encode(g.GetLabel()), str(g.GetRange()))
345                  close_el = 'clrange'                  close_el = 'clrange'
346                elif isinstance(g, ClassGroupPattern):
347                    open_el  = 'clpattern label="%s" pattern="%s"' \
348                              % (self.encode(g.GetLabel()), str(g.GetPattern()))
349                    close_el = 'clpattern'
350    
351              else:              else:
352                  assert False, _("Unsupported group type in classification")                  assert False, _("Unsupported group type in classification")
353                  continue                  continue
# Line 290  class SessionSaver(XMLWriter): Line 357  class SessionSaver(XMLWriter):
357                      'stroke_width': str(data.GetLineWidth()),                      'stroke_width': str(data.GetLineWidth()),
358                      'fill'        : data.GetFill().hex()}                      'fill'        : data.GetFill().hex()}
359    
360                # only for point layers write the size attribute
361                if layer.ShapeType() == SHAPETYPE_POINT:
362                    dict['size'] =  str(data.GetSize())
363    
364              self.open_element(open_el)              self.open_element(open_el)
365              self.write_element("cldata", dict)              self.write_element("cldata", dict)
366              self.close_element(close_el)              self.close_element(close_el)
Legend:
Removed from v.1417  
changed lines
  Added in v.2734
[email protected]
 ViewVC Help
Powered by ViewVC 1.1.26