apt-plus/command/parser/Package.py

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2017-10-06 12:29:09 +00:00
#!/usr/bin/env python
class Package:
_com_pad = 40;
# (1) Constructs a new package
#
# @name<String> Package name
# @state<char> Package state ('x', ' ', '.')
# @com<String> Package comm (default: None)
# @ppa<(String, String)> Package ppa (default: None)
# @deb<Path> Path to local deb file (if deb) (default: None)
# @pad<int> Number of pad spaces (default: 2)
#
#--------------------------------------------------------#
def __init__(self, name=None, sta=None, com=None, ppa=None, deb=False, pad=2):
# (1) Arguments check
#--------------------------------------------------------#
# (1) Is name set #
if( name == None ):
raise Exception('Missing argument "name" !');
# (2) deb set but not a bool #
if( not isinstance(deb, bool) ):
raise Exception('Argument "deb" must be a boolean !');
# (3) Check pad is (+) int #
try:
pad = int(pad);
if( pad < 0 ):
raise Exception('Argument "pad" must be a positive integer !');
except ValueError:
raise Exception('Argument "pad" must be a positive integer !');
# (4) Check state #
if( sta != 'x' and sta != '.' and sta != ' ' ):
raise Exception('Argument "sta" is invalid or missing !');
# (2) Set attributes
#--------------------------------------------------------#
self._name = name;
self._sta = sta;
self._com = com;
self._ppa = "%s/%s" % (ppa[0], ppa[1]) if ppa != None else None;
self._deb = deb;
self._pad = pad;
# (2) Getters
def getName(self):
return self._name;
def getDeb(self):
return self._deb;
def getPpa(self):
return self._ppa;
def getPad(self):
return self._pad;
def getCom(self):
return self._com;
def isInstalled(self):
return self._sta == 'x';
def isRemoved(self):
return self._sta == '.';
def isPurged(self):
return self._sta == ' ';
def install(self):
self._sta = 'x';
def remove(self):
self._sta = '.';
def purge(self):
self._sta = ' ';
# (3) Serialize
#
#--------------------------------------------------------#
def serialize(self):
raw = '%s[%s] %s' % ( ' '*self._pad, self._sta, self._name);
if( self._ppa != None ):
raw += ' [%s]' % self._ppa;
elif( self._deb ):
raw += ' [deb]';
if( self._com != None ):
raw += ' ' * (self._com_pad - len(raw));
raw += '# %s' % self._com;
return raw;