373 lines
14 KiB
Python
373 lines
14 KiB
Python
#
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# Gramps - a GTK+/GNOME based genealogy program
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#
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# Copyright (C) 2005-2007 Donald N. Allingham
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# Copyright (C) 2008 Brian G. Matherly
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# $Id:DbLoader.py 9912 2008-01-22 09:17:46Z acraphae $
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"""
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Handling of loading new/existing databases.
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"""
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#-------------------------------------------------------------------------
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#
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# Standard python modules
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#
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#-------------------------------------------------------------------------
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import os
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from gettext import gettext as _
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import logging
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#-------------------------------------------------------------------------
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#
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# Set up logging
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#
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#-------------------------------------------------------------------------
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_LOG = logging.getLogger(".")
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#-------------------------------------------------------------------------
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#
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# GTK+ modules
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#
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#-------------------------------------------------------------------------
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import gtk
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import gobject
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#-------------------------------------------------------------------------
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#
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# GRAMPS modules
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#
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#-------------------------------------------------------------------------
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import const
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import Config
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import gen.db
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import Utils
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from gen.plug import PluginManager
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from QuestionDialog import (DBErrorDialog, ErrorDialog, QuestionDialog2,
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WarningDialog)
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import Errors
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#-------------------------------------------------------------------------
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#
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# DbLoader class
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#
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#-------------------------------------------------------------------------
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class DbLoader:
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def __init__(self, dbstate, uistate):
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self.dbstate = dbstate
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self.uistate = uistate
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self.import_info = None
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def import_file(self):
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# First thing first: import is a batch transaction
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# so we will lose the undo history. Warn the user.
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if self.dbstate.db.get_number_of_people() > 0:
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warn_dialog = QuestionDialog2(
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_('Undo history warning'),
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_('Proceeding with import will erase the undo history '
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'for this session. In particular, you will not be able '
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'to revert the import or any changes made prior to it.\n\n'
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'If you think you may want to revert the import, '
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'please stop here and backup your database.'),
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_('_Proceed with import'), _('_Stop'),
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self.uistate.window)
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if not warn_dialog.run():
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return False
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pmgr = PluginManager.get_instance()
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import_dialog = gtk.FileChooserDialog(_('GRAMPS: Import database'),
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self.uistate.window,
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gtk.FILE_CHOOSER_ACTION_OPEN,
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(gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL,
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'gramps-import', gtk.RESPONSE_OK))
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import_dialog.set_local_only(False)
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# Always add automatic (match all files) filter
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add_all_files_filter(import_dialog) # *
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# Add more file type selections for available importers
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for plugin in pmgr.get_import_plugins():
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file_filter = gtk.FileFilter()
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name = "%s (.%s)" % (plugin.get_name(), plugin.get_extension())
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file_filter.set_name(name)
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file_filter.add_pattern("*.%s" % plugin.get_extension())
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file_filter.add_pattern(plugin.get_extension().capitalize())
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import_dialog.add_filter(file_filter)
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(box, type_selector) = format_maker()
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import_dialog.set_extra_widget(box)
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# Suggested folder: try last open file, import, then last export,
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# then home.
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default_dir = Config.get(Config.RECENT_IMPORT_DIR)
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if len(default_dir)<=1:
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default_dir = get_default_dir()
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import_dialog.set_current_folder(default_dir)
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while True:
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response = import_dialog.run()
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if response == gtk.RESPONSE_CANCEL:
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break
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elif response == gtk.RESPONSE_OK:
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filename = Utils.get_unicode_path(import_dialog.get_filename())
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if self.check_errors(filename):
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# displays errors if any
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continue
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(the_path, the_file) = os.path.split(filename)
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Config.set(Config.RECENT_IMPORT_DIR, the_path)
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extension = type_selector.get_value()
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if extension == 'auto':
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# Guess the file format based on the file extension.
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# This will get the lower case extension without a period,
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# or an empty string.
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extension = os.path.splitext(filename)[-1][1:].lower()
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for plugin in pmgr.get_import_plugins():
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if extension == plugin.get_extension():
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self.do_import(import_dialog,
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plugin.get_import_function(),
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filename)
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return True
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# Finally, we give up and declare this an unknown format
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ErrorDialog(
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_("Could not open file: %s") % filename,
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_('File type "%s" is unknown to GRAMPS.\n\n'
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'Valid types are: GRAMPS database, GRAMPS XML, '
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'GRAMPS package, GEDCOM, and others.') % extension)
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import_dialog.destroy()
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return False
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def check_errors(self, filename):
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"""
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Run common error checks and return True if any found.
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In this process, a warning dialog can pop up.
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"""
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if not isinstance(filename, basestring):
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return True
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filename = os.path.normpath(os.path.abspath(filename))
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if len(filename) == 0:
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return True
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elif os.path.isdir(filename):
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ErrorDialog(
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_('Cannot open file'),
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_('The selected file is a directory, not a file.\n'))
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return True
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elif os.path.exists(filename):
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if not os.access(filename, os.R_OK):
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ErrorDialog(
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_('Cannot open file'),
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_('You do not have read access to the selected file.'))
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return True
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else:
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try:
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f = file(filename,'w')
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f.close()
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os.remove(filename)
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except IOError:
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ErrorDialog(
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_('Cannot create file'),
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_('You do not have write access to the selected file.'))
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return True
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return False
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def read_file(self, filename):
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"""
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This method takes care of changing database, and loading the data.
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In 3.0 we only allow reading of real databases of filetype
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'x-directory/normal'
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This method should only return on success.
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Returning on failure makes no sense, because we cannot recover,
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since database has already beeen changed.
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Therefore, any errors should raise exceptions.
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On success, return with the disabled signals. The post-load routine
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should enable signals, as well as finish up with other UI goodies.
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"""
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if os.path.exists(filename):
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if not os.access(filename, os.W_OK):
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mode = "r"
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WarningDialog(_('Read only database'),
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_('You do not have write access '
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'to the selected file.'))
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else:
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mode = "w"
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else:
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mode = 'w'
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dbclass = gen.db.GrampsDBDir
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self.dbstate.change_database(dbclass())
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self.dbstate.db.disable_signals()
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self.uistate.window.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.WATCH))
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self.uistate.progress.show()
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try:
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self.dbstate.db.load(filename, self.uistate.pulse_progressbar, mode)
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self.dbstate.db.set_save_path(filename)
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except gen.db.FileVersionDeclineToUpgrade:
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self.dbstate.no_database()
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except gen.db.exceptions.FileVersionError, msg:
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ErrorDialog( _("Cannot open database"), str(msg))
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self.dbstate.no_database()
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except OSError, msg:
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ErrorDialog(
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_("Could not open file: %s") % filename, str(msg))
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except Errors.DbError, msg:
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DBErrorDialog(str(msg.value))
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self.dbstate.no_database()
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except Exception:
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_LOG.error("Failed to open database.", exc_info=True)
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return True
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def do_import(self, dialog, importer, filename):
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self.import_info = None
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dialog.destroy()
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self.uistate.window.window.set_cursor(gtk.gdk.Cursor(gtk.gdk.WATCH))
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self.uistate.progress.show()
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try:
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#an importer can return an object with info, object.info_text()
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#returns that info. Otherwise None is set to import_info
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self.import_info = importer(self.dbstate.db, filename,
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self.uistate.pulse_progressbar)
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dirname = os.path.dirname(filename) + os.path.sep
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Config.set(Config.RECENT_IMPORT_DIR, dirname)
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except UnicodeError, msg:
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ErrorDialog(
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_("Could not import file: %s") % filename,
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_("This file incorrectly identifies its character "
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"set, so it cannot be accurately imported. Please fix the "
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"encoding, and import again") + "\n\n %s" % msg)
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except Exception:
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_LOG.error("Failed to import database.", exc_info=True)
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def import_info_text(self):
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"""
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On import the importer can construct an info object about the import.
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If so, this method will return this text, otherwise the empty string
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is returned
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"""
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if self.import_info is None:
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return u""
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return self.import_info.info_text()
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#-------------------------------------------------------------------------
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#
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# default dir selection
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#
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#-------------------------------------------------------------------------
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def get_default_dir():
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# Suggested folder: try last open file, last import, last export,
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# then home.
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default_dir = os.path.dirname(Config.get(Config.RECENT_FILE))
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if default_dir:
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default_dir += os.path.sep
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if len(default_dir)<=1:
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default_dir = Config.get(Config.RECENT_IMPORT_DIR)
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if len(default_dir)<=1:
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default_dir = Config.get(Config.RECENT_EXPORT_DIR)
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if len(default_dir)<=1:
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default_dir = '~/'
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else:
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default_dir = "~/"
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return default_dir
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#-------------------------------------------------------------------------
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#
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# FileChooser filters: what to show in the file chooser
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#
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#-------------------------------------------------------------------------
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def add_all_files_filter(chooser):
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"""
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Add an all-permitting filter to the file chooser dialog.
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"""
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mime_filter = gtk.FileFilter()
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mime_filter.set_name(_('All files'))
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mime_filter.add_pattern('*')
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chooser.add_filter(mime_filter)
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#-------------------------------------------------------------------------
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#
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# Format selectors: explictly set the format of the file
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#
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#-------------------------------------------------------------------------
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class GrampsFormatWidget(gtk.ComboBox):
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def __init__(self):
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gtk.ComboBox.__init__(self, model=None)
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def set(self, format_list):
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self.store = gtk.ListStore(gobject.TYPE_STRING)
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self.set_model(self.store)
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cell = gtk.CellRendererText()
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self.pack_start(cell, True)
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self.add_attribute(cell, 'text', 0)
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self.format_list = format_list
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for format, label in format_list:
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self.store.append(row=[label])
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self.set_active(False)
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def get_value(self):
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active = self.get_active()
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if active < 0:
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return None
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return self.format_list[active][0]
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def format_maker():
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"""
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A factory function making format selection widgets.
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Accepts a list of formats to include into selector.
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The auto selection is always added as the first one.
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The returned box contains both the label and the selector.
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"""
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pmgr = PluginManager.get_instance()
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format_list = [ ('auto', _('Automatically detected')) ]
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for plugin in pmgr.get_import_plugins():
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format_list.append( (plugin.get_extension(), plugin.get_name()) )
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type_selector = GrampsFormatWidget()
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type_selector.set(format_list)
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box = gtk.HBox()
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label = gtk.Label(_('Select file _type:'))
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label.set_use_underline(True)
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label.set_mnemonic_widget(type_selector)
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box.pack_start(label, expand=False, fill=False, padding=6)
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box.add(type_selector)
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box.show_all()
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return (box, type_selector)
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