#
# RTEMS Tools Project (http://www.rtems.org/)
# Copyright 2017 Chris Johns (chrisj@rtems.org)
# All rights reserved.
#
# This file is part of the RTEMS Tools package in 'rtems-tools'.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
#
# Host specifics.
#
from __future__ import print_function
import os
import re
try:
import configparser
except:
import ConfigParser as configparser
from rtemstoolkit import error
from rtemstoolkit import path
class configuration:
def __init__(self):
self.config = configparser.ConfigParser()
self.ini = None
self.macro_filter = re.compile('\$\{.+\}')
def get_item(self, section, label, err = True):
try:
rec = self.config.get(section, label).replace(os.linesep, ' ')
except:
if err:
raise error.general('config: no "%s" found in "%s"' % (label, section))
return None
#
# On Python 2.7 there is no extended interpolation so add support here.
# On Python 3 this should happen automatically and so the findall
# should find nothing.
#
for m in self.macro_filter.findall(rec):
if ':' not in m:
raise error.general('config: interpolation is ${section:value}: %s' % (m))
section_value = m[2:-1].split(':')
if len(section_value) != 2:
raise error.general('config: interpolation is ${section:value}: %s' % (m))
try:
ref = self.config.get(section_value[0],
section_value[1]).replace(os.linesep, ' ')
rec = rec.replace(m, ref)
except:
pass
return rec
def get_items(self, section, err = True):
try:
items = [(name, key.replace(os.linesep, ' ')) \
for name, key in self.config.items(section)]
return items
except:
if err:
raise error.general('config: section "%s" not found' % (section))
return []
def comma_list(self, section, label, err = True):
items = self.get_item(section, label, err)
if items is None:
return []
return sorted(set([a.strip() for a in items.split(',')]))
def get_item_names(self, section, err = True):
try:
return [item[0] for item in self.config.items(section)]
except:
if err:
raise error.general('config: section "%s" not found' % (section))
return []
def load(self, name):
#
# Load all the files.
#
self.ini = { 'base' : path.dirname(name),
'files' : [] }
includes = [name]
still_loading = True
while still_loading:
still_loading = False
for include in includes:
if not path.exists(include):
rebased_inc = path.join(self.ini['base'],
path.basename(include))
if not path.exists(rebased_inc):
e = 'config: cannot find configuration: %s' % (include)
raise error.general(e)
include = rebased_inc
if include not in self.ini['files']:
try:
self.config.read(include)
except configparser.ParsingError as ce:
raise error.general('config: %s' % (ce))
still_loading = True
self.ini['files'] += [include]
includes = []
if still_loading:
for section in self.config.sections():
includes += self.comma_list(section, 'include', err = False)
def files(self):
return self.ini['files']
