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# R overlay -- roverlay package, core functions
# -*- coding: utf-8 -*-
# Copyright (C) 2012, 2013 André Erdmann <dywi@mailerd.de>
# Distributed under the terms of the GNU General Public License;
# either version 2 of the License, or (at your option) any later version.
"""R overlay package
Provides roverlay initialization helpers (setup_initial_logger,
load_config_file) and some information vars (version, name, ...).
"""
__all__ = [
'DIE', 'die', 'setup_initial_logger', 'load_config_file',
'locate_config_file', 'default_helper_setup', 'load_locate_config_file',
]
import os
import sys
import logging
import roverlay.config
import roverlay.recipe.easylogger
import roverlay.tools.shenv
import roverlay.util.common
name = "R_overlay"
version = "0.3.0"
description_str = "R overlay creation (roverlay) " + version
license_str = (
'Copyright (C) 2012, 2013 Andr\xe9 Erdmann\n'
'Distributed under the terms of the GNU General Public License;\n'
'either version 2 of the License, or (at your option) any later version.\n'
)
DEFAULT_CONFIG_FILE_NAME = "R-overlay.conf"
# directories where the config file could be found if roverlay has been
# installed, in order:
# * user roverlay dir (${HOME}/roverlay)
# * system config dir /etc/roverlay
#
# Note: $PWD has been removed
#
CONFIG_DIRS = tuple ((
(
( os.getenv ( 'HOME' ) or roverlay.util.common.get_home_dir ( None ) )
+ os.sep + 'roverlay'
),
# os.sep is '/' if /etc exists, so don't care about that
'/etc/roverlay',
))
class DIE ( object ):
"""Container class for various system exit 'events'."""
NOP = os.EX_OK
ERR = 1
BAD_USAGE = os.EX_USAGE
USAGE = os.EX_USAGE
ARG = 9
CONFIG = os.EX_CONFIG
OV_CREATE = 20
SYNC = 30
CMD_LEFTOVER = 90
IMPORT = 91
UNKNOWN = 95
INTERRUPT = 130
@staticmethod
def die ( msg=None, code=None ):
"""
Calls syst.exit (code:=DIE.ERR) after printing a message (if any).
"""
code = DIE.ERR if code is None else code
if msg is not None:
sys.stderr.write ( msg + "\n" )
# else:
# sys.stderr.write ( "died.\n" )
sys.exit ( code )
# --- end of die (...) ---
# --- DIE: exit codes ---
die = DIE.die
def setup_initial_logger():
"""Sets up initial logging."""
roverlay.recipe.easylogger.setup_initial()
# --- end of setup_initial_logger (...) ---
def force_console_logging ( *args, **kwargs ):
return roverlay.recipe.easylogger.force_console_logging ( *args, **kwargs )
# --- end of force_console_logging (...) ---
def load_config_file (
cfile, extraconf=None, setup_logger=True, load_main_only=False
):
"""
Loads the config, including the field definition file.
Sets up the logger afterwards.
(Don't call this method more than once.)
arguments:
* cfile -- path to the config file
* extraconf -- a dict with additional config entries that will override
entries read from cfile
* setup_logger -- set up logger (defaults to True)
* load_main_only -- if set and True: load main config file only
(= do not load field def, ...)
"""
roverlay_config = roverlay.config.access()
confloader = roverlay_config.get_loader()
if cfile:
confloader.load_config ( cfile )
if extraconf is not None:
roverlay_config.merge_with ( extraconf )
if setup_logger:
roverlay.recipe.easylogger.setup ( roverlay_config )
my_logger = logging.getLogger()
my_logger.debug ( "roverlay version " + version )
my_logger.debug (
"python version {0}.{1}.{2}".format ( *sys.version_info )
)
del my_logger
if not load_main_only:
confloader.load_field_definition (
roverlay_config.get_or_fail ( "DESCRIPTION.field_definition_file" )
)
confloader.load_use_expand_map (
roverlay_config.get ( "EBUILD.USE_EXPAND.rename_file" )
)
return roverlay_config
# --- end of load_config_file (...) ---
def locate_config_file (
ROVERLAY_INSTALLED, CONFIG_FILE_NAME=DEFAULT_CONFIG_FILE_NAME
):
# search for the config file if roverlay has been installed
if ROVERLAY_INSTALLED:
cfg = None
config_dir = None
for config_dir in CONFIG_DIRS:
cfg = config_dir + os.sep + CONFIG_FILE_NAME
if os.path.isfile ( cfg ):
return cfg
else:
config_dir = os.environ.get ( 'ROVERLAY_PRJROOT', os.getcwd() )
for fname in ( CONFIG_FILE_NAME + '.local', CONFIG_FILE_NAME ):
fpath = config_dir + os.sep + fname
if os.path.exists ( fpath ):
return fpath
return None
# --- end of locate_config_file (...) ---
def load_locate_config_file (
ROVERLAY_INSTALLED, CONFIG_FILE_NAME=DEFAULT_CONFIG_FILE_NAME, **kw
):
return load_config_file (
locate_config_file ( ROVERLAY_INSTALLED, CONFIG_FILE_NAME ), **kw
)
# --- end of load_locate_config_file (...) ---
def default_helper_setup ( ROVERLAY_INSTALLED, log_to_console=True ):
if log_to_console is True:
roverlay.recipe.easylogger.force_console_logging (
log_level=logging.WARNING
)
elif log_to_console or (
log_to_console == 0 and log_to_console is not False
):
roverlay.recipe.easylogger.force_console_logging (
log_level=log_to_console
)
else:
setup_initial_logger()
config = load_locate_config_file (
ROVERLAY_INSTALLED, extraconf={ 'installed': ROVERLAY_INSTALLED, },
setup_logger=False, load_main_only=True,
)
roverlay.tools.shenv.setup_env()
return config
# --- end of default_helper_setup (...) ---
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