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# vim: set fileencoding=utf-8 :
#
# (C) 2014 Guido Guenther <agx@sigxcpu.org>
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Format a message"""
from gbp.errors import GbpError
def format_msg(msg, args):
"""
Format a strin with the given dict. Be a bit more verbose than
default python about the error cause.
>>> format_msg("%(foo)", {})
Traceback (most recent call last):
...
GbpError: Failed to format %(foo): Missing value 'foo' in {}
>>> format_msg("%(foo)", {'foo': 'bar'})
Traceback (most recent call last):
...
GbpError: Failed to format %(foo) with {'foo': 'bar'}: incomplete format
>>> format_msg("A %(foo)s is a %(bar)s", {'foo': 'dog', 'bar': 'mamal'})
'A dog is a mamal'
"""
try:
return msg % args
except ValueError as e:
raise GbpError("Failed to format %s with %s: %s" % (msg, args, e))
except KeyError as e:
raise GbpError("Failed to format %s: Missing value %s in %s" % (msg, e, args))
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