diff mercurial/help.py @ 22633:92b54547ac5d

util: introduce datapath for getting the location of supporting data files

templates, help and locale data is normally stored as sub folders in the
directory containing the source of the mercurial module. In a frozen build they
live as sub folders next to 'hg.exe' and 'library.zip'.

These different kind of data were handled in different ways. Unify that by
introducing util.datapath. The value is computed from the environment and is
always used, so we just calculate the value on module load.

--- a/mercurial/help.py	Sun Sep 28 16:57:06 2014 +0200
+++ b/mercurial/help.py	Sun Sep 28 16:57:06 2014 +0200
@@ -6,7 +6,7 @@
 # GNU General Public License version 2 or any later version.
 
 from i18n import gettext, _
-import itertools, sys, os
+import itertools, os
 import error
 import extensions, revset, fileset, templatekw, templatefilters, filemerge
 import encoding, util, minirst
@@ -129,14 +129,8 @@
     """Return a delayed loader for help/topic.txt."""
 
     def loader():
-        if util.mainfrozen():
-            module = sys.executable
-        else:
-            module = __file__
-        base = os.path.dirname(module)
-
         for dir in ('.', '..'):
-            docdir = os.path.join(base, dir, 'help')
+            docdir = os.path.join(util.datapath, dir, 'help')
             if os.path.isdir(docdir):
                 break