/usr/bin/grass74 is in grass-core 7.4.0-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#############################################################################
#
# MODULE: GRASS initialization script
# AUTHOR(S): Original author unknown - probably CERL
# Andreas Lange <andreas.lange rhein-main.de>
# Huidae Cho <grass4u gmail.com>
# Justin Hickey <jhickey hpcc.nectec.or.th>
# Markus Neteler <neteler osgeo.org>
# Hamish Bowman <hamish_b yahoo.com>
#
# GRASS 7: converted to Python (based on init.sh shell
# script from GRASS 6) by Glynn Clements
# Martin Landa <landa.martin gmail.com>
# Luca Delucchi <lucadeluge gmail.com>
# Vaclav Petras <wenzeslaus gmail.com> (refactoring and exec)
# PURPOSE: Sets up environment variables, parses any remaining
# command line options for setting the GISDBASE, LOCATION,
# and/or MAPSET. Finally it starts GRASS with the appropriate
# user interface and cleans up after it is finished.
# COPYRIGHT: (C) 2000-2018 by the GRASS Development Team
#
# This program is free software under the GNU General
# Public License (>=v2). Read the file COPYING that
# comes with GRASS for details.
#
#############################################################################
"""
Script to run GRASS session.
Some of the functions could be used separately but import from this module
is not safe, i.e. it has side effects (this should be changed in the future).
"""
# we allow for long file because we want to avoid imports if possible
# (this makes it more stable since we have to set up paths first)
# pylint: disable=too-many-lines
from __future__ import print_function
import sys
import os
import atexit
import string
import subprocess
import re
import platform
import tempfile
import locale
# ----+- Python 3 compatibility start -+----
PY2 = sys.version[0] == '2'
ENCODING = locale.getdefaultlocale()[1]
if ENCODING is None:
ENCODING = 'UTF-8'
print("Default locale not found, using UTF-8") # intentionally not translatable
def to_text_string(obj, encoding=ENCODING):
"""Convert `obj` to (unicode) text string"""
if PY2:
# Python 2
if encoding is None:
return unicode(obj)
else:
return unicode(obj, encoding)
else:
# Python 3
if encoding is None:
return str(obj)
elif isinstance(obj, str):
# In case this function is not used properly, this could happen
return obj
else:
return str(obj, encoding)
if PY2:
import types
string_types = basestring,
integer_types = (int, long)
class_types = (type, types.ClassType)
text_type = unicode
binary_type = str
else:
string_types = str,
integer_types = int,
class_types = type,
text_type = str
binary_type = bytes
MAXSIZE = sys.maxsize
# ----+- Python 3 compatibility end -+----
# Variables substituted during build process
if 'GISBASE' in os.environ:
# TODO: should this be something like GRASS_PATH?
# GISBASE marks complete runtime, so no need to get it here when
# setting it up, possible scenario: existing runtime and starting
# GRASS in that, we want to overwrite the settings, not to take it
# possibly same for GRASS_PROJSHARE and others but maybe not
gisbase = os.environ['GISBASE']
else:
gisbase = "/usr/lib/grass74"
cmd_name = "grass74"
grass_version = "7.4.0"
ld_library_path_var = 'LD_LIBRARY_PATH'
if 'GRASS_PROJSHARE' in os.environ:
config_projshare = os.environ['GRASS_PROJSHARE']
else:
config_projshare = "/usr/share/proj"
gisbase = os.path.normpath(gisbase)
# i18N
import gettext
# TODO: is this needed or even desirable when we have set_language()?
gettext.install('grasslibs', os.path.join(gisbase, 'locale'))
def warning(text):
sys.stderr.write(_("WARNING") + ': ' + text + os.linesep)
def try_remove(path):
try:
os.remove(path)
except:
pass
def try_rmdir(path):
try:
os.rmdir(path)
except:
pass
def clean_env(gisrc):
env_curr = read_gisrc(gisrc)
env_new = {}
for k,v in env_curr.items():
if k.endswith('PID') or k.startswith('MONITOR'):
continue
env_new[k] = v
write_gisrc(env_new, gisrc)
def cleanup_dir(path):
if not path:
return
for root, dirs, files in os.walk(path, topdown=False):
for name in files:
try_remove(os.path.join(root, name))
for name in dirs:
try_rmdir(os.path.join(root, name))
class Cleaner(object): # pylint: disable=R0903
"""Holds directories and files which needs to be cleaned or deleted"""
def __init__(self):
self.mapset_path = None
self.lockfile = None
self.tmpdir = None
def cleanup(self):
"""This can be registered with atexit
Object can then still change and add or remove directories to clean"""
# all exits after setting up tmp dirs (system/location) should
# also tidy it up
cleanup_dir(self.tmpdir)
try_rmdir(self.tmpdir)
if self.mapset_path:
tmpdir_mapset = os.path.join(self.mapset_path, ".tmp")
cleanup_dir(tmpdir_mapset)
try_rmdir(tmpdir_mapset)
# remove lock-file if requested
if self.lockfile:
try_remove(self.lockfile)
def fatal(msg):
sys.stderr.write("%s: " % _('ERROR') + msg + os.linesep)
sys.exit(_("Exiting..."))
def message(msg):
sys.stderr.write(msg + "\n")
sys.stderr.flush()
# mechanism meant for debugging this script (only)
# private global to store if we are debugging
_DEBUG = None
def is_debug():
"""Returns True if we are in debug mode
For debug messages use ``debug()``.
"""
global _DEBUG
if _DEBUG is not None:
return _DEBUG
_DEBUG = os.getenv('GRASS_DEBUG')
# translate to bool (no or empty variable means false)
if _DEBUG:
_DEBUG = True
else:
_DEBUG = False
return _DEBUG
def debug(msg):
"""Print a debug message if in debug mode
Do not use translatable strings for debug messages.
"""
if is_debug():
sys.stderr.write("DEBUG: %s\n" % msg)
sys.stderr.flush()
def readfile(path):
f = open(path, 'r')
s = f.read()
f.close()
return s
def writefile(path, s):
f = open(path, 'w')
f.write(s)
f.close()
def call(cmd, **kwargs):
"""Wrapper for subprocess.call to deal with platform-specific issues"""
if windows:
kwargs['shell'] = True
return subprocess.call(cmd, **kwargs)
def Popen(cmd, **kwargs): # pylint: disable=C0103
"""Wrapper for subprocess.Popen to deal with platform-specific issues"""
if windows:
kwargs['shell'] = True
return subprocess.Popen(cmd, **kwargs)
def gpath(*args):
"""Costruct path to file or directory in GRASS GIS installation
Can be called only after gisbase was set.
"""
return os.path.join(gisbase, *args)
# for wxpath
_WXPYTHON_BASE = None
def wxpath(*args):
"""Costruct path to file or directory in GRASS wxGUI
Can be called only after gisbase was set.
This function does not check if the directories exist or if GUI works
this must be done by the caller if needed.
"""
global _WXPYTHON_BASE
if not _WXPYTHON_BASE:
# this can be called only after gisbase was set
_WXPYTHON_BASE = gpath("gui", "wxpython")
return os.path.join(_WXPYTHON_BASE, *args)
# using format for most but leaving usage of template for the dynamic ones
# two different methods are easy way to implement two phase construction
help_text = r"""GRASS GIS $VERSION_NUMBER
Geographic Resources Analysis Support System (GRASS GIS).
{usage}:
$CMD_NAME [-h | -help | --help | --h] [-v | --version]
[-c | -c geofile | -c EPSG:code[:datum_trans]]
[-e] [-f] [-text | -gtext | -gui] [--config param]
[[[GISDBASE/]LOCATION_NAME/]MAPSET]
$CMD_NAME [FLAG]... GISDBASE/LOCATION_NAME/MAPSET --exec EXECUTABLE [EPARAM]...
{flags}:
-h or -help or --help or --h {help_flag}
-v or --version {version_flag}
-c {create}
-e {exit_after}
-f {force_removal}
-text {text}
{text_detail}
-gtext {gtext}
{gtext_detail}
-gui {gui}
{gui_detail}
--config {config}
{config_detail}
--exec EXECUTABLE {exec_}
{exec_detail}
{params}:
GISDBASE {gisdbase}
{gisdbase_detail}
LOCATION_NAME {location}
{location_detail}
MAPSET {mapset}
GISDBASE/LOCATION_NAME/MAPSET {full_mapset}
EXECUTABLE {executable}
EPARAM {executable_params}
FLAG {standard_flags}
{env_vars}:
GRASS_GUI {gui_var}
GRASS_HTML_BROWSER {html_var}
GRASS_ADDON_PATH {addon_path_var}
GRASS_ADDON_BASE {addon_base_var}
GRASS_BATCH_JOB {batch_var}
GRASS_PYTHON {python_var}
""".format(
usage=_("Usage"),
flags=_("Flags"),
help_flag=_("print this help message"),
version_flag=_("show version information and exit"),
create=_("create given database, location or mapset if it doesn't exist"),
exit_after=_("exit after creation of location or mapset. Only with -c flag"),
force_removal=_("force removal of .gislock if exists (use with care!). Only with -text flag"),
text=_("use text based interface (skip welcome screen)"),
text_detail=_("and set as default"),
gtext=_("use text based interface (show welcome screen)"),
gtext_detail=_("and set as default"),
gui=_("use $DEFAULT_GUI graphical user interface"),
gui_detail=_("and set as default"),
config=_("print GRASS configuration parameters"),
config_detail=_("options: arch,build,compiler,path,revision,version"),
params=_("Parameters"),
gisdbase=_("initial GRASS GIS database directory"),
gisdbase_detail=_("directory containing Locations"),
location=_("initial GRASS Location"),
location_detail=_("directory containing Mapsets with one common coordinate system (projection)"),
mapset=_("initial GRASS Mapset"),
full_mapset=_("fully qualified initial Mapset directory"),
env_vars=_("Environment variables relevant for startup"),
gui_var=_("select GUI (text, gui, gtext)"),
html_var=_("set html web browser for help pages"),
addon_path_var=_("set additional path(s) to local GRASS modules or user scripts"),
addon_base_var=_("set additional GISBASE for locally installed GRASS Addons"),
batch_var=_("shell script to be processed as batch job"),
python_var=_("set Python interpreter name to override 'python'"),
exec_=_("execute GRASS module or script"),
exec_detail=_("provided executable will be executed in GRASS session"),
executable=_("GRASS module, script or any other executable"),
executable_params=_("parameters of the executable"),
standard_flags=_("standard flags"),
)
def help_message(default_gui):
t = string.Template(help_text)
s = t.substitute(CMD_NAME=cmd_name, DEFAULT_GUI=default_gui,
VERSION_NUMBER=grass_version)
sys.stderr.write(s)
def get_grass_config_dir():
"""Get configuration directory
Determines path of GRASS GIS user configuration directory and creates
it if it does not exist.
Configuration directory is for example used for grass env file
(the one which caries mapset settings from session to session).
"""
if sys.platform == 'win32':
grass_config_dirname = "GRASS7"
win_conf_path = os.getenv('APPDATA')
# this can happen with some strange settings
if not win_conf_path:
fatal(_("The APPDATA variable is not set, ask your operating"
" system support"))
if not os.path.exists(win_conf_path):
fatal(_("The APPDATA variable points to directory which does"
" not exist, ask your operating system support"))
directory = os.path.join(win_conf_path, grass_config_dirname)
else:
grass_config_dirname = ".grass7"
directory = os.path.join(os.getenv('HOME'), grass_config_dirname)
if not os.path.exists(directory):
os.mkdir(directory)
return directory
def create_tmp(user, gis_lock):
"""Create temporary directory
:param user: user name to be used in the directory name
:param gis_lock: session lock filename to be used in the directory name
"""
# use $TMPDIR if it exists, then $TEMP, otherwise /tmp
tmp = os.getenv('TMPDIR')
if not tmp:
tmp = os.getenv('TEMP')
if not tmp:
tmp = os.getenv('TMP')
if not tmp:
tmp = tempfile.gettempdir()
if tmp:
tmpdir = os.path.join(tmp, "grass7-%(user)s-%(lock)s" % {'user': user,
'lock': gis_lock})
try:
os.mkdir(tmpdir, 0o700)
except:
tmp = None
if not tmp:
for ttmp in ("/tmp", "/var/tmp", "/usr/tmp"):
tmp = ttmp
tmpdir = os.path.join(tmp, "grass7-%(user)s-%(lock)s" % {
'user': user, 'lock': gis_lock})
try:
os.mkdir(tmpdir, 0o700)
except:
tmp = None
if tmp:
break
if not tmp:
fatal(_("Unable to create temporary directory <grass7-%(user)s-"
"%(lock)s>! Exiting.") % {'user': user, 'lock': gis_lock})
# promoting the variable even if it was not defined before
os.environ['TMPDIR'] = tmpdir
debug("Tmp directory '{tmpdir}' created for user '{user}'".format(
tmpdir=tmpdir, user=user))
return tmpdir
def get_gisrc_from_config_dir(grass_config_dir, batch_job):
"""Set the global grassrc file (aka grassrcrc)"""
if batch_job:
# use individual GISRCRC files when in batch mode (r33174)
filename = os.path.join(grass_config_dir, "rc.%s" % platform.node())
if os.access(filename, os.R_OK):
return filename
# use standard file if in normal mode or the special file is not available
return os.path.join(grass_config_dir, "rc")
def create_gisrc(tmpdir, gisrcrc):
# Set the session grassrc file
gisrc = os.path.join(tmpdir, "gisrc")
os.environ['GISRC'] = gisrc
# remove invalid GISRC file to avoid disturbing error messages:
try:
s = readfile(gisrcrc)
if "UNKNOWN" in s:
try_remove(gisrcrc)
s = None
except:
s = None
# Copy the global grassrc file to the session grassrc file
if s:
writefile(gisrc, s)
return gisrc
def read_gisrc(filename):
kv = {}
try:
f = open(filename, 'r')
except IOError:
return kv
for line in f:
try:
k, v = line.split(':', 1)
except ValueError as e:
warning(_("Invalid line in RC file ({file}):"
" '{line}' ({error})\n").format(
line=line, error=e, file=filename))
continue
kv[k.strip()] = v.strip()
f.close()
return kv
def read_env_file(path):
kv = {}
f = open(path, 'r')
for line in f:
k, v = line.split(':', 1)
kv[k.strip()] = v.strip()
f.close()
return kv
def write_gisrc(kv, filename):
f = open(filename, 'w')
for k, v in kv.items():
f.write("%s: %s\n" % (k, v))
f.close()
def read_gui(gisrc, default_gui):
grass_gui = None
# At this point the GRASS user interface variable has been set from the
# command line, been set from an external environment variable,
# or is not set. So we check if it is not set
# Check for a reference to the GRASS user interface in the grassrc file
if os.access(gisrc, os.R_OK):
kv = read_gisrc(gisrc)
if 'GRASS_GUI' in os.environ:
grass_gui = os.environ['GRASS_GUI']
elif 'GUI' in kv:
grass_gui = kv['GUI']
elif 'GRASS_GUI' in kv:
# For backward compatibility (GRASS_GUI renamed to GUI)
grass_gui = kv['GRASS_GUI']
else:
# Set the GRASS user interface to the default if needed
grass_gui = default_gui
if not grass_gui:
grass_gui = default_gui
if grass_gui == 'gui':
grass_gui = default_gui
# FIXME oldtcltk, gis.m, d.m no longer exist (remove this around 7.2)
if grass_gui in ['d.m', 'gis.m', 'oldtcltk', 'tcltk']:
warning(_("GUI <%s> not supported in this version") % grass_gui)
grass_gui = default_gui
return grass_gui
def path_prepend(directory, var):
path = os.getenv(var)
if path:
path = directory + os.pathsep + path
else:
path = directory
os.environ[var] = path
def path_append(directory, var):
path = os.getenv(var)
if path:
path = path + os.pathsep + directory
else:
path = directory
os.environ[var] = path
def set_paths(grass_config_dir):
# addons (path)
addon_path = os.getenv('GRASS_ADDON_PATH')
if addon_path:
for path in addon_path.split(os.pathsep):
path_prepend(addon_path, 'PATH')
# addons (base)
addon_base = os.getenv('GRASS_ADDON_BASE')
if not addon_base:
addon_base = os.path.join(grass_config_dir, 'addons')
os.environ['GRASS_ADDON_BASE'] = addon_base
if not windows:
path_prepend(os.path.join(addon_base, 'scripts'), 'PATH')
path_prepend(os.path.join(addon_base, 'bin'), 'PATH')
# standard installation
if not windows:
path_prepend(gpath('scripts'), 'PATH')
path_prepend(gpath('bin'), 'PATH')
# Set PYTHONPATH to find GRASS Python modules
if os.path.exists(gpath('etc', 'python')):
path_prepend(gpath('etc', 'python'), 'PYTHONPATH')
# set path for the GRASS man pages
grass_man_path = gpath('docs', 'man')
addons_man_path = os.path.join(addon_base, 'docs', 'man')
man_path = os.getenv('MANPATH')
sys_man_path = None
if man_path:
path_prepend(addons_man_path, 'MANPATH')
path_prepend(grass_man_path, 'MANPATH')
else:
try:
nul = open(os.devnull, 'w')
p = Popen(['manpath'], stdout=subprocess.PIPE, stderr=nul)
nul.close()
s = p.stdout.read()
p.wait()
sys_man_path = s.strip()
except:
pass
if sys_man_path:
os.environ['MANPATH'] = to_text_string(sys_man_path)
path_prepend(addons_man_path, 'MANPATH')
path_prepend(grass_man_path, 'MANPATH')
else:
os.environ['MANPATH'] = to_text_string(addons_man_path)
path_prepend(grass_man_path, 'MANPATH')
# Set LD_LIBRARY_PATH (etc) to find GRASS shared libraries
# this works for subprocesses but won't affect the current process
path_prepend(gpath("lib"), ld_library_path_var)
def find_exe(pgm):
for directory in os.getenv('PATH').split(os.pathsep):
path = os.path.join(directory, pgm)
if os.access(path, os.X_OK):
return path
return None
def set_defaults():
# GRASS_PAGER
if not os.getenv('GRASS_PAGER'):
if find_exe("pager"):
pager = "pager"
elif find_exe("less"):
pager = "less"
elif find_exe("more"):
pager = "more"
elif windows:
pager = "more"
else:
pager = "cat"
os.environ['GRASS_PAGER'] = pager
# GRASS_PYTHON
if not os.getenv('GRASS_PYTHON'):
if windows:
os.environ['GRASS_PYTHON'] = "python.exe"
else:
os.environ['GRASS_PYTHON'] = "python"
# GRASS_GNUPLOT
if not os.getenv('GRASS_GNUPLOT'):
os.environ['GRASS_GNUPLOT'] = "gnuplot -persist"
# GRASS_PROJSHARE
if not os.getenv('GRASS_PROJSHARE'):
os.environ['GRASS_PROJSHARE'] = config_projshare
def set_display_defaults():
""" Predefine monitor size for certain architectures"""
if os.getenv('HOSTTYPE') == 'arm':
# small monitor on ARM (iPAQ, zaurus... etc)
os.environ['GRASS_RENDER_HEIGHT'] = "320"
os.environ['GRASS_RENDER_WIDTH'] = "240"
def set_browser():
# GRASS_HTML_BROWSER
browser = os.getenv('GRASS_HTML_BROWSER')
if not browser:
if macosx:
# OSX doesn't execute browsers from the shell PATH - route through a
# script
browser = gpath('etc', "html_browser_mac.sh")
os.environ['GRASS_HTML_BROWSER_MACOSX'] = "-b com.apple.helpviewer"
if windows:
browser = "start"
elif cygwin:
browser = "explorer"
else:
# the usual suspects
browsers = ["xdg-open", "x-www-browser", "htmlview", "konqueror", "mozilla",
"mozilla-firefox", "firefox", "iceweasel", "opera",
"netscape", "dillo", "lynx", "links", "w3c"]
for b in browsers:
if find_exe(b):
browser = b
break
elif macosx:
# OSX doesn't execute browsers from the shell PATH - route through a
# script
os.environ['GRASS_HTML_BROWSER_MACOSX'] = "-b %s" % browser
browser = gpath('etc', "html_browser_mac.sh")
if not browser:
warning(_("Searched for a web browser, but none found"))
# even so we set konqueror to make lib/gis/parser.c happy:
# TODO: perhaps something more probable would be better, e.g. xdg-open
browser = "konqueror"
os.environ['GRASS_HTML_BROWSER'] = browser
def ensure_home():
"""Set HOME if not set on MS Windows"""
if windows and not os.getenv('HOME'):
os.environ['HOME'] = os.path.join(os.getenv('HOMEDRIVE'),
os.getenv('HOMEPATH'))
def create_initial_gisrc(filename):
# for convenience, define GISDBASE as pwd:
s = r"""GISDBASE: %s
LOCATION_NAME: <UNKNOWN>
MAPSET: <UNKNOWN>
""" % os.getcwd()
writefile(filename, s)
def check_gui(expected_gui):
grass_gui = expected_gui
# Check if we are running X windows by checking the DISPLAY variable
if os.getenv('DISPLAY') or windows or macosx:
# Check if python is working properly
if expected_gui in ('wxpython', 'gtext'):
nul = open(os.devnull, 'w')
p = Popen([os.environ['GRASS_PYTHON']], stdin=subprocess.PIPE,
stdout=nul, stderr=nul)
nul.close()
p.stdin.write("variable=True".encode(ENCODING))
p.stdin.close()
p.wait()
msg = None
if p.returncode != 0:
# Python was not found - switch to text interface mode
msg = _("The python command does not work as expected!\n"
"Please check your GRASS_PYTHON environment variable.\n"
"Use the -help option for details.\n")
if not os.path.exists(wxpath("wxgui.py")):
msg = _("GRASS GUI not found. Please check your installation.")
if msg:
warning(_("{}\nSwitching to text based interface mode.\n\n"
"Hit RETURN to continue.\n").format(msg))
sys.stdin.readline()
grass_gui = 'text'
else:
# Display a message if a graphical interface was expected
if expected_gui != 'text':
# Set the interface mode to text
warning(_("It appears that the X Windows system is not active.\n"
"A graphical based user interface is not supported.\n"
"(DISPLAY variable is not set.)\n"
"Switching to text based interface mode.\n\n"
"Hit RETURN to continue.\n"))
sys.stdin.readline()
grass_gui = 'text'
return grass_gui
def save_gui(gisrc, grass_gui):
"""Save the user interface variable in the grassrc file"""
if os.access(gisrc, os.F_OK):
kv = read_gisrc(gisrc)
kv['GUI'] = grass_gui
write_gisrc(kv, gisrc)
def create_location(gisdbase, location, geostring):
"""Create GRASS Location using georeferenced file or EPSG
EPSG code format is ``EPSG:code`` or ``EPSG:code:datum_trans``.
:param gisdbase: Path to GRASS GIS database directory
:param location: name of new Location
:param geostring: path to a georeferenced file or EPSG code
"""
if gpath('etc', 'python') not in sys.path:
sys.path.append(gpath('etc', 'python'))
from grass.script import core as gcore # pylint: disable=E0611
try:
if geostring and geostring.upper().find('EPSG:') > -1:
# create location using EPSG code
epsg = geostring.split(':', 1)[1]
if ':' in epsg:
epsg, datum_trans = epsg.split(':', 1)
else:
datum_trans = None
gcore.create_location(gisdbase, location,
epsg=epsg, datum_trans=datum_trans)
else:
# create location using georeferenced file
gcore.create_location(gisdbase, location,
filename=geostring)
except gcore.ScriptError as err:
fatal(err.value.strip('"').strip("'").replace('\\n', os.linesep))
# TODO: distinguish between valid for getting maps and usable as current
# https://lists.osgeo.org/pipermail/grass-dev/2016-September/082317.html
# interface created according to the current usage
def is_mapset_valid(full_mapset):
"""Return True if GRASS Mapset is valid"""
# WIND is created from DEFAULT_WIND by `g.region -d` and functions
# or modules which create a new mapset. Most modules will fail if
# WIND doesn't exist (assuming that neither GRASS_REGION nor
# WIND_OVERRIDE environmental variables are set).
return os.access(os.path.join(full_mapset, "WIND"), os.R_OK)
def is_location_valid(gisdbase, location):
"""Return True if GRASS Location is valid
:param gisdbase: Path to GRASS GIS database directory
:param location: name of a Location
"""
# DEFAULT_WIND file should not be required until you do something
# that actually uses them. The check is just a heuristic; a directory
# containing a PERMANENT/DEFAULT_WIND file is probably a GRASS
# location, while a directory lacking it probably isn't.
return os.access(os.path.join(gisdbase, location,
"PERMANENT", "DEFAULT_WIND"), os.F_OK)
# basically checking location, possibly split into two functions
# (mapset one can call location one)
def get_mapset_invalid_reason(gisdbase, location, mapset):
"""Returns a message describing what is wrong with the Mapset
:param gisdbase: Path to GRASS GIS database directory
:param location: name of a Location
:param mapset: name of a Mapset
:returns: translated message
"""
full_location = os.path.join(gisdbase, location)
if not os.path.exists(full_location):
return _("Location <%s> doesn't exist") % full_location
elif 'PERMANENT' not in os.listdir(full_location):
return _("<%s> is not a valid GRASS Location"
" because PERMANENT Mapset is missing") % full_location
elif not os.path.isdir(os.path.join(full_location, 'PERMANENT')):
return _("<%s> is not a valid GRASS Location"
" because PERMANENT is not a directory") % full_location
elif not os.path.isfile((os.path.join(full_location,
'PERMANENT', 'DEFAULT_WIND'))):
return _("<%s> is not a valid GRASS Location"
" because PERMANENT Mapset does not have a DEFAULT_WIND file"
" (default computational region)") % full_location
elif mapset not in os.listdir(full_location):
return _("Mapset <{mapset}> doesn't exist in GRASS Location <{loc}>. "
"A new mapset can be created by '-c' switch.").format(
mapset=mapset, loc=location)
elif not os.path.isdir(os.path.join(full_location, mapset)):
return _("<%s> is not a GRASS Mapset"
" because it is not a directory") % mapset
else:
return _("Mapset <{mapset}> is invalid for an unknown reason").format(
mapset=mapset, loc=location)
def set_mapset(gisrc, arg, geofile=None, create_new=False):
"""Selected Location and Mapset are checked and created if requested
The gisrc (GRASS environment file) is written at the end
(nothing is returned).
"""
l = None
if arg == '-':
# TODO: repair or remove behavior env vars + `grass74 -` (see doc)
# this is broken for some time (before refactoring, e.g. r65235)
# is some code is added, it should be a separate function, probably
# called here
# older comment for global vars:
# TODO: it does not seem that these would be ever set before calling this
# function, so we may just delete them here (the globals are set from
# the gisrc later on). But where is setting from environmental variables?
# the following probable means if env var defined, use it
# originates from r37863 (Convert grass70 script to Python) but even
# there it seems that it will never succeed
# it would have to be defined also for other vars
# if location:
# l = location
pass
else:
l = arg
if l:
if l == '.':
l = os.getcwd()
elif not os.path.isabs(l):
l = os.path.abspath(l)
l, mapset = os.path.split(l)
if not mapset:
l, mapset = os.path.split(l)
l, location_name = os.path.split(l)
gisdbase = l
if gisdbase and location_name and mapset:
location = os.path.join(gisdbase, location_name, mapset)
# check if 'location' is a valid GRASS location/mapset
if not is_mapset_valid(location):
if not create_new:
# 'location' is not valid, check if 'location_name' is
# a valid GRASS location
fatal(get_mapset_invalid_reason(gisdbase, location_name, mapset))
else:
# 'location' is not valid, the user wants to create
# mapset on the fly
if not is_location_valid(gisdbase, location_name):
# 'location_name' is not a valid GRASS location,
# create new location and 'PERMANENT' mapset
gisdbase = os.path.join(gisdbase, location_name)
location_name = mapset
mapset = "PERMANENT"
if is_location_valid(gisdbase, location_name):
fatal(_("Failed to create new location. "
"The location <%s> already exists." % location_name))
create_location(gisdbase, location_name, geofile)
else:
# 'location_name' is a valid GRASS location,
# create new mapset
os.mkdir(location)
# copy PERMANENT/DEFAULT_WIND to <mapset>/WIND
s = readfile(os.path.join(gisdbase, location_name,
"PERMANENT", "DEFAULT_WIND"))
writefile(os.path.join(location, "WIND"), s)
message(_("Missing WIND file fixed"))
if os.access(gisrc, os.R_OK):
kv = read_gisrc(gisrc)
else:
kv = {}
kv['GISDBASE'] = gisdbase
kv['LOCATION_NAME'] = location_name
kv['MAPSET'] = mapset
write_gisrc(kv, gisrc)
else:
fatal(_("GISDBASE, LOCATION_NAME and MAPSET variables not set properly.\n"
"Interactive startup needed."))
def set_mapset_interactive(grass_gui):
"""User selects Location and Mapset in an interative way
The gisrc (GRASS environment file) is written at the end.
"""
if not os.path.exists(wxpath("gis_set.py")) and grass_gui != 'text':
debug("No GUI available, switching to text mode")
return False
# Check for text interface
if grass_gui == 'text':
# TODO: maybe this should be removed and solved from outside
# this depends on what we expect from this function
# should gisrc be ok after running or is it allowed to be still not set
pass
# Check for GUI
elif grass_gui in ('gtext', 'wxpython'):
gui_startup(grass_gui)
else:
# Shouldn't need this but you never know
fatal(_("Invalid user interface specified - <%s>. "
"Use the --help option to see valid interface names.") % grass_gui)
return True
def gui_startup(grass_gui):
"""Start GUI for startup (setting gisrc file)"""
if grass_gui in ('wxpython', 'gtext'):
ret = call([os.getenv('GRASS_PYTHON'), wxpath("gis_set.py")])
# this if could be simplified to three branches (0, 5, rest)
# if there is no need to handle unknown code separately
if ret == 0:
pass
elif ret in [1, 2]:
# 1 probably error coming from gis_set.py
# 2 probably file not found from python interpreter
# formerly we were starting in text mode instead, now we just fail
# which is more straightforward for everybody
fatal(_("Error in GUI startup. See messages above (if any)"
" and if necessary, please"
" report this error to the GRASS developers.\n"
"On systems with package manager, make sure you have the right"
" GUI package, probably named grass-gui, installed.\n"
"To run GRASS GIS in text mode use the -text flag.\n"
"Use '--help' for further options\n"
" {cmd_name} --help\n"
"See also: https://grass.osgeo.org/{cmd_name}/manuals/helptext.html").format(
cmd_name=cmd_name))
elif ret == 5: # defined in gui/wxpython/gis_set.py
# User wants to exit from GRASS
message(_("Exit was requested in GUI.\nGRASS GIS will not start. Bye."))
sys.exit(0)
else:
fatal(_("Invalid return code from GUI startup script.\n"
"Please advise GRASS developers of this error."))
# we don't follow the LOCATION_NAME legacy naming here but we have to still
# translate to it, so always double check
class MapsetSettings(object):
"""Holds GRASS GIS database directory, Location and Mapset
Provides few convenient functions.
"""
def __init__(self):
self.gisdbase = None
self.location = None
self.mapset = None
self._full_mapset = None
# TODO: perhaps full_mapset would be better as mapset_path
# TODO: works only when set for the first time
# this follows the current usage but we must invalidate when
# the others are changed (use properties for that)
@property
def full_mapset(self):
if self._full_mapset is None:
self._full_mapset = os.path.join(self.gisdbase, self.location,
self.mapset)
return self._full_mapset
# TODO: perhaps conversion to bool would be nicer
def is_valid(self):
return self.gisdbase and self.location and self.mapset
# TODO: does it really makes sense to tell user about gisrcrc?
# anything could have happened in between loading from gisrcrc and now
# (we do e.g. GUI or creating loctation)
def load_gisrc(gisrc, gisrcrc):
"""Get the settings of Location and Mapset from the gisrc file
:returns: MapsetSettings object
"""
mapset_settings = MapsetSettings()
kv = read_gisrc(gisrc)
mapset_settings.gisdbase = kv.get('GISDBASE')
mapset_settings.location = kv.get('LOCATION_NAME')
mapset_settings.mapset = kv.get('MAPSET')
if not mapset_settings.is_valid():
fatal(_("Error reading data path information from g.gisenv.\n"
"GISDBASE={gisbase}\n"
"LOCATION_NAME={location}\n"
"MAPSET={mapset}\n\n"
"Check the <{file}> file.").format(
gisbase=mapset_settings.gisdbase,
location=mapset_settings.location,
mapset=mapset_settings.mapset,
file=gisrcrc))
return mapset_settings
# load environmental variables from grass_env_file
def load_env(grass_env_file):
if not os.access(grass_env_file, os.R_OK):
return
for line in readfile(grass_env_file).split(os.linesep):
try:
k, v = map(lambda x: x.strip(), line.strip().split(' ', 1)[1].split('=', 1))
except:
continue
debug("Environmental variable set {0}={1}".format(k, v))
os.environ[k] = v
# Allow for mixed ISIS-GRASS Environment
if os.getenv('ISISROOT'):
isis = os.getenv('ISISROOT')
os.environ['ISIS_LIB'] = isis + os.sep + "lib"
os.environ['ISIS_3RDPARTY'] = isis + os.sep + "3rdParty" + os.sep + "lib"
os.environ['QT_PLUGIN_PATH'] = isis + os.sep + "3rdParty" + os.sep + "plugins"
#os.environ['ISIS3DATA'] = isis + "$ISIS3DATA"
libpath = os.getenv('LD_LIBRARY_PATH', '')
isislibpath = os.getenv('ISIS_LIB')
isis3rdparty = os.getenv('ISIS_3RDPARTY')
os.environ['LD_LIBRARY_PATH'] = libpath + os.pathsep + isislibpath + os.pathsep + isis3rdparty
def set_language(grass_config_dir):
# This function is used to override system default language and locale
# Such override can be requested only from wxGUI
# An override if user has provided correct environmental variables as
# LC_MESSAGES or LANG is not necessary.
# Unfortunately currently a working solution for Windows is lacking
# thus it always on Vista and XP will print an error.
# See discussion for Windows not following its own documentation and
# not accepting ISO codes as valid locale identifiers http://bugs.python.org/issue10466
language = 'None' # Such string sometimes is present in wx file
encoding = None
# Override value is stored in wxGUI preferences file.
# As it's the only thing required, we'll just grep it out.
try:
fd = open(os.path.join(grass_config_dir, 'wx'), 'r')
except:
# Even if there is no override, we still need to set locale.
pass
else:
for line in fd:
if re.search('^language', line):
line = line.rstrip(' %s' % os.linesep)
language = ''.join(line.split(';')[-1:])
break
fd.close()
if language == 'None' or language == '' or not language:
# Language override is disabled (system language specified)
# As by default program runs with C locale, but users expect to
# have their default locale, we'll just set default locale
try:
locale.setlocale(locale.LC_ALL, '')
except locale.Error as e:
# If we get here, system locale settings are terribly wrong
# There is no point to continue as GRASS/Python will fail
# in some other unpredictable way.
print("System locale is not usable (LC_ALL variable not defined). "
"It indicates misconfigured environment.")
print("Reported error message: %s" % e)
## TOO DRASTIC: sys.exit("Fix system locale settings and then try again.")
locale.setlocale(locale.LC_ALL, 'C')
warning(_("Default locale settings are missing. GRASS running with C locale."))
language, encoding = locale.getdefaultlocale()
if not language:
warning(_("Default locale settings are missing. GRASS running with C locale."))
return
else:
debug("A language override has been requested."
" Trying to switch GRASS into '%s'..." % language)
try:
locale.setlocale(locale.LC_ALL, language)
except locale.Error as e:
try:
# Locale lang.encoding might be missing. Let's try
# UTF-8 encoding before giving up as on Linux systems
# lang.UTF-8 locales are more common than legacy
# ISO-8859 ones.
encoding = 'UTF-8'
normalized = locale.normalize('%s.%s' % (language, encoding))
locale.setlocale(locale.LC_ALL, normalized)
except locale.Error as e:
# The last attempt...
try:
encoding = locale.getpreferredencoding()
normalized = locale.normalize('%s.%s' % (language, encoding))
locale.setlocale(locale.LC_ALL, normalized)
except locale.Error as e:
# If we got so far, attempts to set up language and locale have failed
# on this system
sys.stderr.write("Failed to enforce user specified language '%s' with error: '%s'\n" % (language, e))
sys.stderr.write("A LANGUAGE environmental variable has been set.\nPart of messages will be displayed in the requested language.\n")
# Even if setting locale will fail, let's set LANG in a hope,
# that UI will use it GRASS texts will be in selected language,
# system messages (i.e. OK, Cancel etc.) - in system default
# language
os.environ['LANGUAGE'] = language
return
# Set up environment for subprocesses
os.environ['LANGUAGE'] = language
os.environ['LANG'] = language
if language == 'ko_KR' and encoding == 'cp949':
# The default encoding for the Korean language in Windows is cp949,
# Microsoft's proprietary extension to euc-kr, but gettext prints no
# translated messages at all in the Command Prompt window if LC_CTYPE
# is set to ko_KR.cp949. Here, force LC_CTYPE to be euc-kr.
normalized = 'euc-kr'
encoding = None
elif encoding:
normalized = locale.normalize('%s.%s' % (language, encoding))
else:
normalized = language
for lc in ('LC_CTYPE', 'LC_MESSAGES', 'LC_TIME', 'LC_COLLATE',
'LC_MONETARY', 'LC_PAPER', 'LC_NAME', 'LC_ADDRESS',
'LC_TELEPHONE', 'LC_MEASUREMENT', 'LC_IDENTIFICATION'):
os.environ[lc] = normalized
# Some code in GRASS might not like other decimal separators than .
# Other potential sources for problems are: LC_TIME LC_CTYPE
locale.setlocale(locale.LC_NUMERIC, 'C')
os.environ['LC_NUMERIC'] = 'C'
if os.getenv('LC_ALL'):
del os.environ['LC_ALL'] # Remove LC_ALL to not override LC_NUMERIC
# From now on enforce the new language
if encoding:
gettext.install('grasslibs', gpath('locale'), codeset=encoding)
else:
gettext.install('grasslibs', gpath('locale'))
# TODO: grass_gui parameter is a hack and should be removed, see below
def lock_mapset(mapset_path, force_gislock_removal, user, grass_gui):
"""Lock the mapset and return name of the lock file
Behavior on error must be changed somehow; now it fatals but GUI case is
unresolved.
"""
if not os.path.exists(mapset_path):
fatal(_("Path '%s' doesn't exist") % mapset_path)
if not os.access(mapset_path, os.W_OK):
error = _("Path '%s' not accessible.") % mapset_path
stat_info = os.stat(mapset_path)
mapset_uid = stat_info.st_uid
if mapset_uid != os.getuid():
# GTC %s is mapset's folder path
error = "%s\n%s" % (error, _("You are not the owner of '%s'.") % mapset_path)
fatal(error)
# Check for concurrent use
lockfile = os.path.join(mapset_path, ".gislock")
ret = call([gpath("etc", "lock"), lockfile, "%d" % os.getpid()])
msg = None
if ret == 2:
if not force_gislock_removal:
msg = _("%(user)s is currently running GRASS in selected mapset (" \
"file %(file)s found). Concurrent use not allowed.\nYou can force launching GRASS using -f flag " \
"(note that you need permission for this operation). Have another look in the processor " \
"manager just to be sure..." % {
'user': user, 'file': lockfile})
else:
try_remove(lockfile)
message(_("%(user)s is currently running GRASS in selected mapset (" \
"file %(file)s found). Forcing to launch GRASS..." % {
'user': user, 'file': lockfile}))
elif ret != 0:
msg = _("Unable to properly access '%s'.\n"
"Please notify system personnel.") % lockfile
# TODO: the gui decision should be done by the caller
# this needs some change to the function interface, return tuple or
# use exceptions (better option)
if msg:
if grass_gui == "wxpython":
call([os.getenv('GRASS_PYTHON'), wxpath("gis_set_error.py"), msg])
# TODO: here we probably miss fatal or exit, needs to be added
else:
fatal(msg)
debug("Mapset <{mapset}> locked using '{lockfile}'".format(
mapset=mapset_path, lockfile=lockfile))
return lockfile
def make_fontcap():
# TODO: is GRASS_FONT_CAP ever defined? It seems it must be defined in system
fc = os.getenv('GRASS_FONT_CAP')
if fc and not os.access(fc, os.R_OK):
message(_("Building user fontcap..."))
call(["g.mkfontcap"])
def ensure_db_connected(mapset):
"""Predefine default driver if DB connection not defined
:param mapset: full path to the mapset
"""
if not os.access(os.path.join(mapset, "VAR"), os.F_OK):
call(['db.connect', '-c', '--quiet'])
def get_shell():
# set SHELL on ms windowns
# this was at the very beginning of the script but it can be anywhere
if windows:
if os.getenv('GRASS_SH'):
os.environ['SHELL'] = os.getenv('GRASS_SH')
if not os.getenv('SHELL'):
os.environ['SHELL'] = os.getenv('COMSPEC', 'cmd.exe')
# cygwin has many problems with the shell setup
# below, so i hardcoded everything here.
if sys.platform == 'cygwin':
sh = "cygwin"
shellname = "GNU Bash (Cygwin)"
os.environ['SHELL'] = "/usr/bin/bash.exe"
os.environ['OSTYPE'] = "cygwin"
else:
# in docker the 'SHELL' variable may not be
# visible in a Python session
try:
sh = os.path.basename(os.getenv('SHELL'))
except:
sh = 'sh'
os.environ['SHELL'] = sh
if windows and sh:
sh = os.path.splitext(sh)[0]
if sh == "ksh":
shellname = "Korn Shell"
elif sh == "csh":
shellname = "C Shell"
elif sh == "tcsh":
shellname = "TC Shell"
elif sh == "bash":
shellname = "Bash Shell"
elif sh == "sh":
shellname = "Bourne Shell"
elif sh == "zsh":
shellname = "Z Shell"
elif sh == "cmd":
shellname = "Command Shell"
else:
shellname = "shell"
# check for SHELL
if not os.getenv('SHELL'):
fatal(_("The SHELL variable is not set"))
return sh, shellname
def get_grass_env_file(sh, grass_config_dir):
"""Get name of the shell-specific GRASS environment (rc) file"""
if sh in ['csh', 'tcsh']:
grass_env_file = os.path.join(grass_config_dir, 'cshrc')
elif sh in ['bash', 'msh', 'cygwin', 'sh']:
grass_env_file = os.path.join(grass_config_dir, 'bashrc')
elif sh == 'zsh':
grass_env_file = os.path.join(grass_config_dir, 'zshrc')
elif sh == 'cmd':
grass_env_file = os.path.join(grass_config_dir, 'env.bat')
else:
grass_env_file = os.path.join(grass_config_dir, 'bashrc')
warning(_("Unsupported shell <{sh}>: {env_file}").format(
sh=sh, env_file=grass_env_file))
return grass_env_file
def get_batch_job_from_env_variable():
"""Get script to execute from batch job variable if available
Fails with fatal if variable is set but content unusable.
"""
# hack to process batch jobs:
batch_job = os.getenv('GRASS_BATCH_JOB')
# variable defined, but user might not have been careful enough
if batch_job:
if not os.access(batch_job, os.F_OK):
# wrong file
fatal(_("Job file <%s> has been defined in "
"the 'GRASS_BATCH_JOB' variable but not found. Exiting."
"\n\n"
"Use 'unset GRASS_BATCH_JOB' to disable "
"batch job processing.") % batch_job)
elif not os.access(batch_job, os.X_OK):
# right file, but ...
fatal(_("Change file permission to 'executable' for <%s>")
% batch_job)
return batch_job
def run_batch_job(batch_job):
"""Runs script, module or any command
If *batch_job* is a string (insecure) shell=True is used for execution.
:param batch_job: executable and parameters in a list or a string
"""
batch_job_string = batch_job
if not isinstance(batch_job, string_types):
batch_job_string = ' '.join(batch_job)
message(_("Executing <%s> ...") % batch_job_string)
if isinstance(batch_job, string_types):
proc = Popen(batch_job, shell=True)
else:
try:
proc = Popen(batch_job, shell=False)
except OSError as error:
fatal(_("Execution of <{cmd}> failed:\n"
"{error}").format(cmd=batch_job_string, error=error))
returncode = proc.wait()
message(_("Execution of <%s> finished.") % batch_job_string)
return returncode
def start_gui(grass_gui):
"""Start specified GUI
:param grass_gui: GUI name (allowed values: 'wxpython')
"""
# Start the chosen GUI but ignore text
debug("GRASS GUI should be <%s>" % grass_gui)
# Check for gui interface
if grass_gui == "wxpython":
Popen([os.getenv('GRASS_PYTHON'), wxpath("wxgui.py")])
def close_gui():
"""Close GUI if running"""
if gpath('etc', 'python') not in sys.path:
sys.path.append(gpath('etc', 'python'))
from grass.script import core as gcore # pylint: disable=E0611
env = gcore.gisenv()
if 'GUI_PID' not in env:
return
import signal
for pid in env['GUI_PID'].split(','):
debug("Exiting GUI with pid={0}".format(pid))
try:
os.kill(int(pid), signal.SIGTERM)
except OSError as e:
message(_("Unable to close GUI. {0}").format(e))
def clear_screen():
"""Clear terminal"""
if windows:
pass
# TODO: uncomment when PDCurses works.
# cls
else:
if not is_debug():
call(["tput", "clear"])
def show_banner():
"""Write GRASS GIS ASCII name to stderr"""
sys.stderr.write(r"""
__________ ___ __________ _______________
/ ____/ __ \/ | / ___/ ___/ / ____/ _/ ___/
/ / __/ /_/ / /| | \__ \\_ \ / / __ / / \__ \
/ /_/ / _, _/ ___ |___/ /__/ / / /_/ // / ___/ /
\____/_/ |_/_/ |_/____/____/ \____/___//____/
""")
def say_hello():
"""Write welcome to stderr including Subversion revision if in svn copy"""
sys.stderr.write(_("Welcome to GRASS GIS %s") % grass_version)
if grass_version.endswith('svn'):
try:
filerev = open(gpath('etc', 'VERSIONNUMBER'))
linerev = filerev.readline().rstrip('\n')
filerev.close()
revision = linerev.split(' ')[1]
sys.stderr.write(' (' + revision + ')')
except:
pass
def show_info(shellname, grass_gui, default_gui):
"""Write basic infor about GRASS GIS and GRASS session to stderr"""
sys.stderr.write(
r"""
%-41shttp://grass.osgeo.org
%-41s%s (%s)
%-41sg.manual -i
%-41sg.version -c
%-41sg.version -x
""" % (_("GRASS GIS homepage:"),
# GTC Running through: SHELL NAME
_("This version running through:"),
shellname, os.getenv('SHELL'),
_("Help is available with the command:"),
_("See the licence terms with:"),
_("See citation options with:")))
if grass_gui == 'wxpython':
message("%-41sg.gui wxpython" % _("If required, restart the GUI with:"))
else:
message("%-41sg.gui %s" % (_("Start the GUI with:"), default_gui))
message("%-41sexit" % _("When ready to quit enter:"))
message("")
def csh_startup(location, location_name, mapset, grass_env_file):
userhome = os.getenv('HOME') # save original home
home = location
os.environ['HOME'] = home
cshrc = os.path.join(home, ".cshrc")
tcshrc = os.path.join(home, ".tcshrc")
try_remove(cshrc)
try_remove(tcshrc)
f = open(cshrc, 'w')
f.write("set home = %s\n" % userhome)
f.write("set history = 3000 savehist = 3000 noclobber ignoreeof\n")
f.write("set histfile = %s\n" % os.path.join(os.getenv('HOME'),
".history"))
f.write("set prompt = '\\\n")
f.write("Mapset <%s> in Location <%s> \\\n" % (mapset, location_name))
f.write("GRASS GIS %s > '\n" % grass_version)
f.write("set BOGUS=``;unset BOGUS\n")
path = os.path.join(userhome, ".grass.cshrc") # left for backward compatibility
if os.access(path, os.R_OK):
f.write(readfile(path) + '\n')
if os.access(grass_env_file, os.R_OK):
f.write(readfile(grass_env_file) + '\n')
mail_re = re.compile(r"^ *set *mail *= *")
for filename in [".cshrc", ".tcshrc", ".login"]:
path = os.path.join(userhome, filename)
if os.access(path, os.R_OK):
s = readfile(path)
lines = s.splitlines()
for l in lines:
if mail_re.match(l):
f.write(l)
path = os.getenv('PATH').split(':')
f.write("set path = ( %s ) \n" % ' '.join(path))
f.close()
writefile(tcshrc, readfile(cshrc))
process = Popen([gpath("etc", "run"), os.getenv('SHELL')])
os.environ['HOME'] = userhome
return process
def bash_startup(location, location_name, grass_env_file):
# save command history in mapset dir and remember more
os.environ['HISTFILE'] = os.path.join(location, ".bash_history")
if not os.getenv('HISTSIZE') and not os.getenv('HISTFILESIZE'):
os.environ['HISTSIZE'] = "3000"
# instead of changing $HOME, start bash with: --rcfile "$LOCATION/.bashrc" ?
# if so, must care be taken to explicitly call .grass.bashrc et al for
# non-interactive bash batch jobs?
userhome = os.getenv('HOME') # save original home
home = location # save .bashrc in $LOCATION
os.environ['HOME'] = home
bashrc = os.path.join(home, ".bashrc")
try_remove(bashrc)
f = open(bashrc, 'w')
f.write("test -r ~/.alias && . ~/.alias\n")
if os.getenv('ISISROOT'):
f.write("PS1='ISIS-GRASS %s (%s):\\w > '\n" % (grass_version, location_name))
else:
f.write("PS1='GRASS %s (%s):\\w > '\n" % (grass_version, location_name))
f.write("""grass_prompt() {
LOCATION="`g.gisenv get=GISDBASE,LOCATION_NAME,MAPSET separator='/'`"
if test -d "$LOCATION/grid3/G3D_MASK" && test -f "$LOCATION/cell/MASK" ; then
echo [%s]
elif test -f "$LOCATION/cell/MASK" ; then
echo [%s]
elif test -d "$LOCATION/grid3/G3D_MASK" ; then
echo [%s]
fi
}
PROMPT_COMMAND=grass_prompt\n""" % (_("2D and 3D raster MASKs present"),
_("Raster MASK present"),
_("3D raster MASK present")))
# read other settings (aliases, ...) since environmental variables
# have been already set by load_env(), see #3462
for env_file in [os.path.join(userhome, ".grass.bashrc"),
grass_env_file]:
if not os.access(env_file, os.R_OK):
continue
for line in readfile(env_file).splitlines():
if not line.startswith('export'):
f.write(line + '\n')
f.write("export PATH=\"%s\"\n" % os.getenv('PATH'))
f.write("export HOME=\"%s\"\n" % userhome) # restore user home path
f.close()
process = Popen([gpath("etc", "run"), os.getenv('SHELL')])
os.environ['HOME'] = userhome
return process
def default_startup(location, location_name):
if windows:
os.environ['PS1'] = "GRASS %s> " % (grass_version)
# "$ETC/run" doesn't work at all???
process = subprocess.Popen([os.getenv('SHELL')])
# TODO: is there a difference between this and clean_temp?
# TODO: why this is missing in the other startups?
cleanup_dir(os.path.join(location, ".tmp")) # remove GUI session files from .tmp
else:
os.environ['PS1'] = "GRASS %s (%s):\\w > " % (grass_version, location_name)
process = Popen([gpath("etc", "run"), os.getenv('SHELL')])
return process
def done_message():
# here was something for batch job but it was never called
message(_("Done."))
message("")
message(_("Goodbye from GRASS GIS"))
message("")
def clean_temp():
message(_("Cleaning up temporary files..."))
nul = open(os.devnull, 'w')
call([gpath("etc", "clean_temp")], stdout=nul)
nul.close()
def grep(pattern, lines):
"""Search lines (list of strings) and return them when beginning matches.
>>> grep("a", ['abc', 'cab', 'sdr', 'aaa', 'sss'])
['abc', 'aaa']
"""
expr = re.compile(pattern)
return [elem for elem in lines if expr.match(elem)]
def print_params():
"""Write compile flags and other configuration to stderr"""
plat = gpath('include', 'Make', 'Platform.make')
if not os.path.exists(plat):
fatal(_("Please install the GRASS GIS development package"))
fileplat = open(plat)
linesplat = fileplat.readlines()
fileplat.close()
params = sys.argv[2:]
if not params:
params = ['arch', 'build', 'compiler', 'path', 'revision', 'version']
for arg in params:
if arg == 'path':
sys.stdout.write("%s\n" % gisbase)
elif arg == 'arch':
val = grep('ARCH',linesplat)
sys.stdout.write("%s\n" % val[0].split('=')[1].strip())
elif arg == 'build':
build = gpath('include', 'grass', 'confparms.h')
filebuild = open(build)
val = filebuild.readline()
filebuild.close()
sys.stdout.write("%s\n" % val.strip().strip('"').strip())
elif arg == 'compiler':
val = grep('CC',linesplat)
sys.stdout.write("%s\n" % val[0].split('=')[1].strip())
elif arg == 'revision':
rev = gpath('include', 'grass', 'gis.h')
filerev = open(rev)
linesrev = filerev.readlines()
val = grep('#define GIS_H_VERSION', linesrev)
filerev.close()
sys.stdout.write("%s\n" % val[0].split(':')[1].rstrip('$"\n').strip())
elif arg == 'version':
sys.stdout.write("%s\n" % grass_version)
else:
message(_("Parameter <%s> not supported") % arg)
def get_username():
"""Get name of the current user"""
if windows:
user = os.getenv('USERNAME')
if not user:
user = "user_name"
else:
user = os.getenv('USER')
if not user:
user = os.getenv('LOGNAME')
if not user:
try:
p = Popen(['whoami'], stdout = subprocess.PIPE)
s = p.stdout.read()
p.wait()
user = s.strip()
except:
pass
if not user:
user = "user_%d" % os.getuid()
return user
class Parameters(object):
"""Structure to hold standard part of command line parameters"""
# we don't need to define any methods
# pylint: disable=R0903
def __init__(self):
self.grass_gui = None
self.create_new = None
self.exit_grass = None
self.force_gislock_removal = None
self.mapset = None
self.geofile = None
def parse_cmdline(argv, default_gui):
"""Parse the standard part of command line parameters"""
params = Parameters()
args = []
for i in argv:
# Check if the user asked for the version
if i in ["-v", "--version"]:
message("GRASS GIS %s" % grass_version)
message('\n' + readfile(gpath("etc", "license")))
sys.exit()
# Check if the user asked for help
elif i in ["help", "-h", "-help", "--help", "--h"]:
help_message(default_gui=default_gui)
sys.exit()
# Check if the -text flag was given
elif i in ["-text", "--text"]:
params.grass_gui = 'text'
# Check if the -gtext flag was given
elif i in ["-gtext", "--gtext"]:
params.grass_gui = 'gtext'
# Check if the -gui flag was given
elif i in ["-gui", "--gui"]:
params.grass_gui = default_gui
# Check if the -wxpython flag was given
elif i in ["-wxpython", "-wx", "--wxpython", "--wx"]:
params.grass_gui = 'wxpython'
# Check if the user wants to create a new mapset
elif i == "-c":
params.create_new = True
elif i == "-e":
params.exit_grass = True
elif i == "-f":
params.force_gislock_removal = True
elif i == "--config":
print_params()
sys.exit()
else:
args.append(i)
if len(args) > 1:
params.mapset = args[1]
params.geofile = args[0]
elif len(args) == 1:
params.mapset = args[0]
else:
params.mapset = None
return params
### MAIN script starts here
# Get the system name
windows = sys.platform == 'win32'
cygwin = "cygwin" in sys.platform
macosx = "darwin" in sys.platform
# TODO: it is OK to remove this?
# at the beginning of this file were are happily getting GISBASE
# from the environment and we don't care about inconsistencies it might cause
### commented-out: broken winGRASS
# if 'GISBASE' in os.environ:
# sys.exit(_("ERROR: GRASS GIS is already running "
# "(environmental variable GISBASE found)"))
# this is not really an issue, we should be able to overpower another session
# Set GISBASE
os.environ['GISBASE'] = gisbase
def main():
"""The main function which does the whole setup and run procedure
Only few things are set on the module level.
"""
# Set default GUI
default_gui = "wxpython"
# explain what is happening in debug mode (visible only in debug mode)
debug("GRASS_DEBUG environmental variable is set. It is meant to be"
" an internal variable for debugging only this script.\n"
" Use 'g.gisenv set=\"DEBUG=[0-5]\"'"
" to turn GRASS GIS debug mode on if you wish to do so.")
# Set GRASS version number for R interface etc
# (must be an env var for MS Windows)
os.environ['GRASS_VERSION'] = grass_version
# Set the GIS_LOCK variable to current process id
gis_lock = str(os.getpid())
os.environ['GIS_LOCK'] = gis_lock
grass_config_dir = get_grass_config_dir()
batch_job = get_batch_job_from_env_variable()
# Parse the command-line options and set several global variables
batch_exec_param = '--exec'
try:
# raises ValueError when not found
index = sys.argv.index(batch_exec_param)
batch_job = sys.argv[index + 1:]
clean_argv = sys.argv[1:index]
params = parse_cmdline(clean_argv, default_gui=default_gui)
except ValueError:
params = parse_cmdline(sys.argv[1:], default_gui=default_gui)
if params.exit_grass and not params.create_new:
fatal(_("Flag -e requires also flag -c"))
grass_gui = params.grass_gui # put it to variable, it is used a lot
gisrcrc = get_gisrc_from_config_dir(grass_config_dir, batch_job)
# Set the username
user = get_username()
# TODO: this might need to be moved before processing of parameters and getting batch job
# Set language
# This has to be called before any _() function call!
# Subsequent functions are using _() calls and
# thus must be called only after Language has been set.
set_language(grass_config_dir)
# Set shell (needs to be called before load_env())
sh, shellname = get_shell()
grass_env_file = get_grass_env_file(sh, grass_config_dir)
# Load environmental variables from the file (needs to be called
# before create_tmp())
load_env(grass_env_file)
# Create the temporary directory and session grassrc file
tmpdir = create_tmp(user, gis_lock)
cleaner = Cleaner()
cleaner.tmpdir = tmpdir
# object is not destroyed when its method is registered
atexit.register(cleaner.cleanup)
# Create the session grassrc file
gisrc = create_gisrc(tmpdir, gisrcrc)
ensure_home()
# Set PATH, PYTHONPATH, ...
set_paths(grass_config_dir=grass_config_dir)
# Set GRASS_PAGER, GRASS_PYTHON, GRASS_GNUPLOT, GRASS_PROJSHARE
set_defaults()
set_display_defaults()
# Set GRASS_HTML_BROWSER
set_browser()
# First time user - GISRC is defined in the GRASS script
if not os.access(gisrc, os.F_OK):
if grass_gui == 'text' and not params.mapset:
fatal(_("Unable to start GRASS GIS. You have the choice to:\n"
" - Launch the graphical user interface with"
" the '-gui' switch\n"
" {cmd_name} -gui\n"
" - Launch with path to "
"the location/mapset as an argument\n"
" {cmd_name} /path/to/location/mapset`\n"
" - Create a location with '-c' and launch in its"
" PERMANENT mapset\n"
" {cmd_name} -c EPSG:number /path/to/location\n"
" {cmd_name} -c geofile /path/to/location\n"
" - Create manually the GISRC file ({gisrcrc})\n"
" - Use '--help' for further options\n"
" {cmd_name} --help\n"
"See also: https://grass.osgeo.org/{cmd_name}/manuals/helptext.html").format(
cmd_name=cmd_name, gisrcrc=gisrcrc))
create_initial_gisrc(gisrc)
else:
# clean only for user who is no first time
# (measured by presence of rc file)
clean_temp()
if params.create_new:
message(_("Creating new GRASS GIS location/mapset..."))
else:
message(_("Starting GRASS GIS..."))
# Ensure GUI is set
if batch_job or params.exit_grass:
grass_gui = 'text'
else:
if not grass_gui:
# if GUI was not set previously (e.g. command line),
# get it from rc file or env variable
grass_gui = read_gui(gisrc, default_gui)
# check that the GUI works but only if not doing a batch job
grass_gui = check_gui(expected_gui=grass_gui)
# save GUI only if we are not doibg batch job
save_gui(gisrc, grass_gui)
# Parsing argument to get LOCATION
if not params.mapset:
# Try interactive startup
# User selects LOCATION and MAPSET if not set
if not set_mapset_interactive(grass_gui):
# No GUI available, update gisrc file
fatal(_("<{0}> requested, but not available. Run GRASS in text "
"mode (-text) or install missing package (usually "
"'grass-gui').").format(grass_gui))
else:
# Try non-interactive start up
if params.create_new and params.geofile:
set_mapset(gisrc=gisrc, arg=params.mapset,
geofile=params.geofile, create_new=True)
else:
set_mapset(gisrc=gisrc, arg=params.mapset,
create_new=params.create_new)
# Set GISDBASE, LOCATION_NAME, MAPSET, LOCATION from $GISRC
# e.g. wxGUI startup screen writes to the gisrc file,
# so loading it is the only universal way to obtain the values
# this suppose that both programs share the right path to gisrc file
# TODO: perhaps gisrcrc should be removed from here
# alternatively, we can check validity here with all the info we have
# about what was used to create gisrc
mapset_settings = load_gisrc(gisrc, gisrcrc=gisrcrc)
location = mapset_settings.full_mapset
# TODO: it seems that we are claiming mapset's tmp before locking
# (this is what the original code did but it is probably wrong)
cleaner.mapset_path = mapset_settings.full_mapset
# check and create .gislock file
cleaner.lockfile = lock_mapset(mapset_settings.full_mapset, user=user,
force_gislock_removal=params.force_gislock_removal,
grass_gui=grass_gui)
# build user fontcap if specified but not present
make_fontcap()
# TODO: is this really needed? Modules should call this when/if required.
ensure_db_connected(location)
# Display the version and license info
# only non-error, interactive version continues from here
if batch_job:
returncode = run_batch_job(batch_job)
clean_temp()
sys.exit(returncode)
elif params.exit_grass:
clean_temp()
sys.exit(0)
else:
clear_screen()
show_banner()
say_hello()
show_info(shellname=shellname,
grass_gui=grass_gui, default_gui=default_gui)
if grass_gui == "wxpython":
message(_("Launching <%s> GUI in the background, please wait...")
% grass_gui)
if sh in ['csh', 'tcsh']:
shell_process = csh_startup(mapset_settings.full_mapset,
mapset_settings.location,
mapset_settings.mapset,
grass_env_file)
elif sh in ['bash', 'msh', 'cygwin']:
shell_process = bash_startup(mapset_settings.full_mapset,
mapset_settings.location,
grass_env_file)
else:
shell_process = default_startup(mapset_settings.full_mapset,
mapset_settings.location)
# start GUI and register shell PID in rc file
start_gui(grass_gui)
kv = read_gisrc(gisrc)
kv['PID'] = str(shell_process.pid)
write_gisrc(kv, gisrc)
exit_val = shell_process.wait()
if exit_val != 0:
warning(_("Failed to start shell '%s'") % os.getenv('SHELL'))
# close GUI if running
close_gui()
# here we are at the end of grass session
clear_screen()
# TODO: can we just register this atexit?
# TODO: and what is difference to deleting .tmp which we do?
clean_temp()
# save 'last used' GISRC after removing variables which shouldn't
# be saved, e.g. d.mon related
clean_env(gisrc)
writefile(gisrcrc, readfile(gisrc))
# After this point no more grass modules may be called
done_message()
if __name__ == '__main__':
main()
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