"Mapset Access" broken (wxpython)

[cnielsen]

WinGrass Native binary 6.4.0svn 37703 on winxp-64

Config->GIS Working Environment->Mapset Access returns this error message (no dialog box appears):

Traceback (most recent call last):
  File "c:/GIS/GRASS-6-SVN/etc/wxpython/wxgui.py", line 373,
in OnMapsets

dlg = preferences.MapsetAccess(parent=self, id=wx.ID_ANY)
  File "c:\GIS\GRASS-6-SVN\etc\wxpython\gui_modules\preferen
ces.py", line 1735, in __init__

self.mapsetlb.LoadData(self.all_mapsets)
  File "c:\GIS\GRASS-6-SVN\etc\wxpython\gui_modules\preferen
ces.py", line 1814, in LoadData

stat_info = os.stat(mapsetPath)
WindowsError
:
[Error 123] The filename, directory name, or volume label
syntax is incorrect:
'C:\\GIS\\GISDataBase\\spearfish60\\\user1'

Note the double and, before the mapset, triple slashes.

[kyngchaos]

On Jun 14, 2009, at 12:08 PM, Cline, Royce L. wrote:

On OS X with 6.4RC4 and RC5 when using Config->GIS Working Environment->Mapset Access I get the following error:

Sun Jun 14 11:29:28 2009) Command finished (0 sec)
Traceback (most recent call last):
 File
"/Applications/GRASS-6.4.app/Contents/MacOS/etc/wxpyt
hon/wxgui.py", line
366, in OnMapsets

dlg = preferences.MapsetAccess(parent=self,
id=wx.ID_ANY)
 File
"/Applications/GRASS-6.4.app/Contents/MacOS/etc/wxpyt
hon/gui_modules/prefer
ences.py", line 1732, in __init__

self.mapsetlb.LoadData(self.all_mapsets)

File 
"/Applications/GRASS-6.4.app/Contents/MacOS/etc/wxpyt
hon/gui_modules/prefer
ences.py", line 1811, in LoadData

stat_info =
os.stat(mapsetPath)
OSError
:
[Errno 2] No such file or
directory:
'/Users/rcline/grassdata/oakesModel/\ngridTest01sql'

Mapset Access fails because the mapset gridTest01sql begins with "\n".

This results because the g.mapsets -l returns multiple lines:

GRASS 6.4.0RC4 (oakesModel):~ > g.mapsets -l
aquiferBnd aquifers boresModel01 boresModel02 drains grid_tran01 grid_tran03
gridTest01sql oakes2 PERMANENT testAreaTopo

In lines 1800-1805 of preferences.py the call to g.mapsets -l is made on line1800.

       ret = gcmd.RunCommand('g.mapsets',
                             flags = 'l',
                             read = True)
       mapsets = []
       if ret:
           mapsets = ret.rstrip(' \n').split(' ')

In line 1805, ret.rstrip(' \n').split(' '), only the trailing line feed is removed and not the line feed following the first line. Line 1805 should be replaced with:

mapsets = ret.replace('\n','').split()

That way both the last line feed and any line feeds on multiple lines are removed. Using .split() removes the need to handle the trailing space.

The change fixes the problem for me in 6.4RC4 and 6.4RC5. It also fixed a crash when starting wxpython and opening an existing workspace. Can someone with svn access verify my solution and fix this.

When invoking Mapset Access from the TclTK GUI, the search order was the current mapset, Permanent, other mapsets in alphabetical order. With the wxpython GUI, the search order is mapsets in alphabetical order. Was this change intentional? It breaks some of my scripts, as I assumed that the current mapset would always be searched first.

Royce Cline

[kyngchaos]

Ah. Someone else just mentioned this to me, though they only had the problem in RC5, not RC4. I couldn't get that exact problem to happen for me, but it would hang the GUI when I tried this for a location with many mapsets.

[martinl]

Replying to kyngchaos:

>        ret = gcmd.RunCommand('g.mapsets',
>                              flags = 'l',
>                              read = True)
>        mapsets = []
>        if ret:
>            mapsets = ret.rstrip(' \n').split(' ')

In line 1805, ret.rstrip(' \n').split(' '), only the trailing line feed is removed and not the line feed following the first line. Line 1805 should be replaced with:

> mapsets = ret.replace('\n','').split()

That way both the last line feed and any line feeds on multiple lines are removed. Using .split() removes the need to handle the trailing space.

The change fixes the problem for me in 6.4RC4 and 6.4RC5. It also fixed a crash when starting wxpython and opening an existing workspace. Can someone with svn access verify my solution and fix this.

Fixed in r37880 (devbr6), r37881 (relbr64) and r37882 (trunk).

Martin