* doc/gramps-manual/C/getstart.xml: fixed spelling

* doc/gramps-manual/C/mainwin.xml: fixed spelling
* src/Errors.py: Add a DatabaseError type
* src/Utils.py: detect database loops in descendants_too_old
* src/WriteGedcom.py: report error message when database loop is detected
* src/po/template.po: added new error message. May be too late for some
translations to get this message.


svn: r5149

gramps2/ChangeLog

@@ -1,4 +1,11 @@
 2005-08-30  Don Allingham  <don@gramps-project.org>
+	* doc/gramps-manual/C/getstart.xml: fixed spelling
+	* doc/gramps-manual/C/mainwin.xml: fixed spelling
+	* src/Errors.py: Add a DatabaseError type
+	* src/Utils.py: detect database loops in descendants_too_old
+	* src/WriteGedcom.py: report error message when database loop is detected
+	* src/po/template.po: added new error message. May be too late for some
+	translations to get this message.
 	* src/ImageSelect.py: specify mime type to get_thumbnail_image
 	* src/ImgManip.py: make thumbnailing routine more generic
 	* src/SelectObject.py: specify mime type to get_thumbnail_image

gramps2/doc/gramps-manual/C/getstart.xml

@@ -26,7 +26,7 @@
     <title>Getting Started</title> 
     
     <para>This chapter provides the most basic information on starting &app;
-    and obtaining help. Please procede to the following chapters for more
+    and obtaining help. Please proceed to the following chapters for more
     information.</para>
 
     <!-- ================ Getting Started Subsection ====== -->

gramps2/doc/gramps-manual/C/mainwin.xml

@@ -428,7 +428,7 @@
 	context menu. Among other useful items, the context menu has submenus
 	listing <guilabel>Spouses</guilabel>, <guilabel>Siblings</guilabel>,
 	<guilabel>Children</guilabel>, and <guilabel>Parents</guilabel>
-	of that person. Insensitive (greyed out) submenus indicate the absence
+	of that person. Insensitive (grayed out) submenus indicate the absence
 	of the data in the appropriate category. Similarly to the children menu above,
 	children's and parents' menus distinguish continuing lines from dead ends.
 	</para>

gramps2/src/Errors.py

@@ -42,6 +42,15 @@ class DateError(Exception):
     def __str__(self):
         return self.value
 
+class DatabaseError(Exception):
+    """Error used to report Date errors"""
+    def __init__(self,value=""):
+        Exception.__init__(self)
+        self.value = value
+
+    def __str__(self):
+        return self.value
+
 class ReportError(Exception):
     """Error used to report Report errors"""
     def __init__(self,value,value2=""):

gramps2/src/Utils.py

@@ -27,6 +27,7 @@
 #-------------------------------------------------------------------------
 import os
 import locale
+import sets
 from gettext import gettext as _
 
 #-------------------------------------------------------------------------
@@ -514,7 +515,17 @@ def probably_alive(person,db,current_year=None,limit=0):
     max_generation = 60
     max_age_difference = 60
 
-    def descendants_too_old (person, years):
+    def descendants_too_old (person, years, current=None):
+        if current == None:
+            current = sets.Set()
+
+        if person.handle not in current:
+            current.add(person.handle)
+        else:
+            import Errors
+            raise Errors.DatabaseError(_("Database error: %s is defined as his or her own ancestor") %
+                                       NameDisplay.displayer.display(person))
+        
         for family_handle in person.get_family_handle_list():
             family = db.get_family_from_handle(family_handle)
             family_list = family.get_child_handle_list()
@@ -539,7 +550,7 @@ def probably_alive(person,db,current_year=None,limit=0):
                         if not not_too_old (dobj,current_year):
                             return True
 
-                if descendants_too_old (child, years + min_generation):
+                if descendants_too_old (child, years + min_generation,current):
                     return True
                 
         return False

gramps2/src/WriteGedcom.py

@@ -1269,6 +1269,8 @@ def exportData(database,filename,person,option_box):
     try:
         gw = GedcomWriter(database,person,0,filename,option_box)
         ret = gw.export_data(filename)
+    except Errors.DatabaseError,msg:
+        ErrorDialog(_("Export failed"),str(msg))
     except:
         import DisplayTrace
         DisplayTrace.DisplayTrace()