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# vim: set fileencoding=utf-8 :
#
# (C) 2011 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
"""
Someone who modifiers something in git
like committing changes or authoring a patch
"""
import calendar, datetime
from gbp.git.errors import GitError
class GitModifierError(GitError):
"""Exception thrown by L{GitModifier}"""
pass
class GitTz(datetime.tzinfo):
"""Simple class to store the utc offset only"""
def __init__(self, offset_sec=0, *args, **kwargs):
super(GitTz, self).__init__(*args, **kwargs)
self._offset = datetime.timedelta(seconds=offset_sec)
def utcoffset(self, dt):
return self._offset
def dst(self, dt):
return datetime.timedelta(0)
class GitModifier(object):
"""Stores authorship/comitter information"""
def __init__(self, name=None, email=None, date=None):
"""
@param name: the modifier's name
@type name: C{str}
@param email: the modifier's email
@type email: C{str}
@param date: the date of the modification
@type date: C{str} (git raw date), C{int} (timestamp) or I{datetime} object
"""
self.name = name
self.email = email
self._parse_date(date)
def _parse_date(self, date):
self._date = None
tz = GitTz(0)
if isinstance(date, basestring):
timestamp, offset = date.split()
offset_h = int(offset[:-2])
offset_m = int(offset[-2:])
tz = GitTz(offset_h*3600 + offset_m*60)
self._date = datetime.datetime.fromtimestamp(int(timestamp), tz)
elif type(date) in [ type(0), type(0.0) ]:
self._date = datetime.datetime.fromtimestamp(date, tz)
elif isinstance(date, datetime.datetime):
if date.tzinfo:
self._date = date
else:
self._date = date.replace(tzinfo=tz)
elif date != None:
raise ValueError("Date '%s' not timestamp, "
"datetime object or git raw date" % date)
def _get_env(self, who):
"""Get author or comitter information as env var dictionary"""
who = who.upper()
if who not in ['AUTHOR', 'COMMITTER']:
raise GitModifierError("Neither comitter nor author")
extra_env = {}
if self.name:
extra_env['GIT_%s_NAME' % who] = self.name
if self.email:
extra_env['GIT_%s_EMAIL' % who] = self.email
if self.date:
extra_env['GIT_%s_DATE' % who] = self.date
return extra_env
def get_date(self):
"""Return date as a git raw date"""
if self._date:
return "%s %s" % (calendar.timegm(self._date.utctimetuple()),
self._date.strftime('%z'))
else:
return None
def set_date(self, date):
"""Set date from timestamp, git raw date or datetime object"""
self._parse_date(date)
date = property(get_date, set_date)
@property
def datetime(self):
"""Return the date as datetime object"""
return self._date
@property
def tz_offset(self):
"""Return the date's UTC offset"""
return self._date.strftime('%z')
def get_author_env(self):
"""
Get env vars for authorship information
>>> g = GitModifier("foo", "bar")
>>> g.get_author_env()
{'GIT_AUTHOR_EMAIL': 'bar', 'GIT_AUTHOR_NAME': 'foo'}
@return: Author information suitable to use as environment variables
@rtype: C{dict}
"""
return self._get_env('author')
def get_committer_env(self):
"""
Get env vars for comitter information
>>> g = GitModifier("foo", "bar")
>>> g.get_committer_env()
{'GIT_COMMITTER_NAME': 'foo', 'GIT_COMMITTER_EMAIL': 'bar'}
@return: Commiter information suitable to use as environment variables
@rtype: C{dict}
"""
return self._get_env('committer')
def __getitem__(self, key):
if key == 'date':
return self.date
else:
return self.__dict__[key]
@staticmethod
def keys():
return [ 'name', 'email', 'date' ]
def items(self):
items = []
for key in self.keys():
val = self.__getitem__(key)
if val:
items.append((key, val))
return items
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