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import itertools, os.path, re, utils
def read_changelog(dir = ''):
r = re.compile(r"""
^
(
(?P<header>
(?P<header_source>
\w[-+0-9a-z.]+
)
\
\(
(?P<header_version>
[^\(\)\ \t]+
)
\)
\s+
(?P<header_distribution>
[-0-9a-zA-Z]+
)
\;
)
)
""", re.VERBOSE)
f = file(os.path.join(dir, "debian/changelog"))
entries = []
act_upstream = None
while True:
line = f.readline()
if not line:
break
line = line.strip('\n')
match = r.match(line)
if not match:
continue
if match.group('header'):
e = {}
e['Distribution'] = match.group('header_distribution')
e['Source'] = match.group('header_source')
version = parse_version(match.group('header_version'))
e['Version'] = version
if act_upstream is None:
act_upstream = version['upstream']
elif version['upstream'] != act_upstream:
break
entries.append(e)
return entries
def parse_version(version):
version_re = ur"""
^
(?P<source>
(?P<parent>
\d+\.\d+\.\d+\+
)?
(?P<upstream>
(?P<version>
(?P<major>\d+\.\d+)
\.
\d+
)
(?:
-
(?P<modifier>
.+?
)
)?
)
-
(?P<debian>[^-]+)
)
$
"""
match = re.match(version_re, version, re.X)
if match is None:
raise ValueError
ret = match.groupdict()
if ret['parent'] is not None:
ret['source_upstream'] = ret['parent'] + ret['upstream']
else:
ret['source_upstream'] = ret['upstream']
return ret
class package_description(object):
__slots__ = "short", "long"
def __init__(self, value = None):
if value is not None:
self.short, long = value.split ("\n", 1)
self.long = long.split ("\n.\n")
else:
self.short = None
self.long = []
def __str__(self):
ret = self.short + '\n'
w = utils.wrap(width = 74, fix_sentence_endings = True)
pars = []
for i in self.long:
pars.append('\n '.join(w.wrap(i)))
return self.short + '\n ' + '\n .\n '.join(pars)
class package_relation(object):
__slots__ = "name", "version", "arches"
_re = re.compile(r'^(\S+)(?: \(([^)]+)\))?(?: \[([^]]+)\])?$')
def __init__(self, value = None):
if value is not None:
match = self._re.match(value)
if match is None:
raise RuntimeError, "Can't parse dependency %s" % value
match = match.groups()
self.name = match[0]
self.version = match[1]
if match[2] is not None:
self.arches = re.split('\s+', match[2])
else:
self.arches = []
else:
self.name = None
self.version = None
self.arches = []
def __str__(self):
ret = [self.name]
if self.version is not None:
ret.extend([' (', self.version, ')'])
if self.arches:
ret.extend([' [', ' '.join(self.arches), ']'])
return ''.join(ret)
class package_relation_list(list):
def __init__(self, value = None):
if isinstance(value, (list, tuple)):
self.extend(value)
elif value is not None:
self.extend(value)
def __str__(self):
return ', '.join([str(i) for i in self])
def _match(self, value):
for i in self:
if i._match(value):
return i
return None
def extend(self, value):
if isinstance(value, basestring):
value = [package_relation_group(j.strip()) for j in re.split(',', value.strip())]
for i in value:
if isinstance(i, basestring):
i = package_relation_group(i)
j = self._match(i)
if j:
j._update_arches(i)
else:
self.append(i)
class package_relation_group(list):
def __init__(self, value = None):
if isinstance(value, package_relation_list):
self.extend(value)
elif value is not None:
self._extend(value)
def __str__(self):
return ' | '.join([str(i) for i in self])
def _extend(self, value):
self.extend([package_relation(j.strip()) for j in re.split('\|', value.strip())])
def _match(self, value):
for i, j in itertools.izip(self, value):
if i.name != j.name or i.version != j.version:
return None
return self
def _update_arches(self, value):
for i, j in itertools.izip(self, value):
if i.arches:
for arch in j.arches:
if arch not in i.arches:
i.arches.append(arch)
class package(dict):
_fields = utils.sorted_dict((
('Package', str),
('Source', str),
('Architecture', utils.field_list),
('Section', str),
('Priority', str),
('Maintainer', str),
('Uploaders', str),
('Standards-Version', str),
('Build-Depends', package_relation_list),
('Build-Depends-Indep', package_relation_list),
('Provides', package_relation_list),
('Depends', package_relation_list),
('Recommends', package_relation_list),
('Suggests', package_relation_list),
('Replaces', package_relation_list),
('Conflicts', package_relation_list),
('Description', package_description),
))
def __setitem__(self, key, value):
try:
cls = self._fields[key]
if not isinstance(value, cls):
value = cls(value)
except KeyError: pass
super(package, self).__setitem__(key, value)
def iterkeys(self):
for i in self._fields.iterkeys():
if self.has_key(i) and self[i]:
yield i
def iteritems(self):
for i in self._fields.iterkeys():
if self.has_key(i) and self[i]:
yield (i, self[i])
def itervalues(self):
for i in self._fields.iterkeys():
if self.has_key(i) and self[i]:
yield self[i]
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