[GRASS-SVN] r38885 - grass/trunk/lib/python
svn_grass at osgeo.org
svn_grass at osgeo.org
Thu Aug 27 13:43:27 EDT 2009
Author: martinl
Date: 2009-08-27 13:43:27 -0400 (Thu, 27 Aug 2009)
New Revision: 38885
Modified:
grass/trunk/lib/python/core.py
grass/trunk/lib/python/db.py
grass/trunk/lib/python/grasspythonlib.dox
grass/trunk/lib/python/raster.py
grass/trunk/lib/python/vector.py
Log:
pythonlib: set_fatal_exit() added (used in wxGUI to call error()
instead of fatal()
Modified: grass/trunk/lib/python/core.py
===================================================================
--- grass/trunk/lib/python/core.py 2009-08-27 10:52:53 UTC (rev 38884)
+++ grass/trunk/lib/python/core.py 2009-08-27 17:43:27 UTC (rev 38885)
@@ -54,6 +54,8 @@
PIPE = subprocess.PIPE
STDOUT = subprocess.STDOUT
+fatal_exit = True # abort on fatal()
+
def call(*args, **kwargs):
return Popen(*args, **kwargs).wait()
@@ -274,8 +276,6 @@
@param msg message to be displayed
@param flag flags (given as string)
-
- @return g.message's exit code
"""
run_command("g.message", flags = flag, message = msg)
@@ -284,8 +284,6 @@
@param msg message to be displayed
@param debug debug level (0-5)
-
- @return g.message's exit code
"""
run_command("g.message", flags = 'd', message = msg, debug = debug)
@@ -293,8 +291,6 @@
"""!Display a verbose message using g.message -v
@param msg message to be displayed
-
- @return g.message's exit code
"""
message(msg, flag = 'v')
@@ -302,39 +298,42 @@
"""!Display an informational message using g.message -i
@param msg message to be displayed
-
- @return g.message's exit code
"""
message(msg, flag = 'i')
def warning(msg):
"""!Display a warning message using g.message -w
- @param msg message to be displayed
-
- @return g.message's exit code
+ @param msg warning message to be displayed
"""
message(msg, flag = 'w')
def error(msg):
"""!Display an error message using g.message -e
- @param msg message to be displayed
-
- @return g.message's exit code
+ @param msg error message to be displayed
"""
message(msg, flag = 'e')
def fatal(msg):
"""!Display an error message using g.message -e, then abort
- @param msg message to be displayed
-
- @return g.message's exit code
+ @param msg error message to be displayed
"""
error(msg)
- sys.exit(1)
+
+ global fatal_exit
+ if fatal_exit:
+ sys.exit(1)
+
+def set_fatal_exit(exit = True):
+ """!Set fatal_exit variable
+ @param exit True to abort on fatal() otherwise just error message
+ is printed"""
+ global fatal_exit
+ fatal_exit = exit
+
# interface to g.parser
def _parse_opts(lines):
Modified: grass/trunk/lib/python/db.py
===================================================================
--- grass/trunk/lib/python/db.py 2009-08-27 10:52:53 UTC (rev 38884)
+++ grass/trunk/lib/python/db.py 2009-08-27 17:43:27 UTC (rev 38885)
@@ -7,9 +7,8 @@
Usage:
@code
-from grass.script import core, db as grass
+from grass.script import db as grass
-grass.parser()
grass.db_describe(table)
...
@endcode
@@ -23,6 +22,8 @@
@author Martin Landa <landa.martin gmail.com>
"""
+import tempfile as pytempfile # conflict with core.tempfile
+
from core import *
def db_describe(table, **args):
@@ -44,7 +45,8 @@
"""
s = read_command('db.describe', flags = 'c', table = table, **args)
if not s:
- return None
+ grass.fatal(_("Unable to describe table <%s>") % table)
+
cols = []
result = {}
for l in s.splitlines():
@@ -59,6 +61,7 @@
else:
result[key] = f[1:]
result['cols'] = cols
+
return result
# run "db.connect -p" and parse output
@@ -76,3 +79,30 @@
"""
s = read_command('db.connect', flags = 'p')
return parse_key_val(s, sep = ':')
+
+def db_select(table, sql, file = False, **args):
+ """!Perform SQL select statement
+
+ @param table table name
+ @param sql SQL select statement (string or file)
+ @param file True if sql is filename
+ @param args see db.select arguments
+ """
+ ofile = pytempfile.NamedTemporaryFile(mode = 'w+b')
+ if not file:
+ ret = run_command('db.select', quiet = True,
+ flags = 'c',
+ table = table,
+ sql = sql,
+ output = ofile.name)
+ else: # -> sql is file
+ ret = run_command('db.select', quiet = True,
+ flags = 'c',
+ table = table,
+ input = sql,
+ output = ofile.name)
+
+ if ret != 0:
+ fatal(_("Fetching data from table <%s> failed") % table)
+
+ return ofile.readlines()
Modified: grass/trunk/lib/python/grasspythonlib.dox
===================================================================
--- grass/trunk/lib/python/grasspythonlib.dox 2009-08-27 10:52:53 UTC (rev 38884)
+++ grass/trunk/lib/python/grasspythonlib.dox 2009-08-27 17:43:27 UTC (rev 38885)
@@ -11,19 +11,19 @@
See code in:
- - core.py
- - db.py
- - raster.py
- - vector.py
+- core.py
+- db.py
+- raster.py
+- vector.py
-<h2>Table of content</h2>
+<b>Table of content</b>
- - \subpage scripting
- - \subpage modules
- - \subpage core
- - \subpage db
- - \subpage raster
- - \subpage vector
+- \subpage scripting
+- \subpage modules
+ - \subpage core
+ - \subpage db
+ - \subpage raster
+ - \subpage vector
\section scripting GRASS scripting tasks for Python provided by "grass.script"
@@ -201,6 +201,8 @@
- db_describe()
+ - db_select()
+
\section raster Raster
Interface for <tt>r.*</tt> modules.
Modified: grass/trunk/lib/python/raster.py
===================================================================
--- grass/trunk/lib/python/raster.py 2009-08-27 10:52:53 UTC (rev 38884)
+++ grass/trunk/lib/python/raster.py 2009-08-27 17:43:27 UTC (rev 38885)
@@ -7,9 +7,8 @@
Usage:
@code
-from grass.script import core, raster as grass
+from grass.script import raster as grass
-grass.parser()
grass.raster_history(map)
...
@endcode
Modified: grass/trunk/lib/python/vector.py
===================================================================
--- grass/trunk/lib/python/vector.py 2009-08-27 10:52:53 UTC (rev 38884)
+++ grass/trunk/lib/python/vector.py 2009-08-27 17:43:27 UTC (rev 38885)
@@ -7,9 +7,8 @@
Usage:
@code
-from grass.script import core, vector as grass
+from grass.script import vector as grass
-grass.parser()
grass.vector_db(map)
...
@endcode
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