grass.init() added

(merge https://trac.osgeo.org/grass/changeset/44388 from devbr6)


git-svn-id: https://svn.osgeo.org/grass/grass/trunk@44392 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/python/core.py

@@ -29,6 +29,7 @@ import types
 import re
 import atexit
 import subprocess
+import tempfile as tmpfile
 
 # i18N
 import gettext
@@ -992,6 +993,22 @@ def _create_location_xy(location):
     
     return 0
 
+def init(gisbase, dbase, location, mapset):
+    os.environ['PATH'] += ':' + os.path.join(gisbase, 'bin') + ':' + \
+        os.path.join(gisbase, 'scripts')
+    os.environ['LD_LIBRARY_PATH'] = os.path.join(gisbase, 'lib')
+    
+    os.environ['GIS_LOCK'] = str(os.getpid())
+    
+    fd, gisrc = tmpfile.mkstemp()
+    os.environ['GISRC'] = gisrc
+    fd.write("GISDBASE: %s\n" % dbase)
+    fd.write("LOCATION_NAME: %s\n" % location)
+    fd.write("MAPSET: %s\n" % mapset)
+    fd.close()
+    
+    return gisrc
+
 # get debug_level
 if find_program('g.gisenv', ['--help']):
     debug_level = int(gisenv().get('DEBUG', 0))