[GRASS-dev] [grass-code I][446] Illegal filename. Character <'> not allowed.

[grass-codei at wald.intevation.org]

code I item #446, was opened at 2007-07-15 10:20
Status: Open
Priority: 3
Submitted By: Markus Neteler (markusn)
Assigned to: Nobody (None)
Summary: Illegal filename. Character <'> not allowed.  
Issue type: None
Issue status: None
GRASS version: None
GRASS component: None
Operating system: None
Operating system version: 
GRASS CVS checkout date, if applies (YYMMDD): 


Initial Comment:
In winQGIS/GRASS, this problem happens for a couple of commands (but eg r.average works, see also https://svn.qgis.org/trac/ticket/736):

r.median base=CEA_cat at CEA_dati cover=CEA_aspect at CEA_dati output=aspect_median
Illegal filename. Character <'> not allowed. 

##########################
Glynn Clements answered:
r.median invokes r.stats via system(), using a single quote:

    strcpy (command, "r.stats -a '");
    strcat (command, G_fully_qualified_name (basemap, base_mapset));
    strcat (command, ",");
    strcat (command, G_fully_qualified_name (covermap, cover_mapset));
    strcat (command, "'");

/* strcpy (command,"cat /tmp/t"); */
    stats_fd = popen (command, "r");

    sprintf (command, "r.reclass i='%s' o='%s'",
        G_fully_qualified_name (basemap, base_mapset), outmap);

system() uses the platform's shell: /bin/sh on Unix, cmd.exe on
Windows NT/2K/XP, command.com on 95/98/ME. Single quotes won't work
with the Windows shells.

r.average doesn't quote the map names, and uses double quotes around
the output filename:

    sprintf (command, "%s -anC input=%s,%s fs=space > \"%s\"",
        STATS, basemap->answer, covermap->answer, tempfile1);

Using double quotes should suffice so long as the map name doesn't
contain $ or ` (a double quote would also be problematic, but isn't
legal in map names).

Ultimately, we need a Windows implementation of G_spawn_ex(), so that
we can avoid the shell altogether. 

----------------------------------------------------------------------

You can respond by visiting: 
http://wald.intevation.org/tracker/?func=detail&atid=204&aid=446&group_id=21