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linux/debian/lib/python/debian_linux/debian.py

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from __future__ import annotations
import dataclasses
import enum
import itertools
import os.path
import re
import shlex
import typing
from typing import (
Iterable,
Optional,
Self,
TypeAlias,
)
from .dataclasses_deb822 import field_deb822
class Changelog(list):
_top_rules = r"""
^
(?P<source>
\w[-+0-9a-z.]+
)
[ ]
\(
(?P<version>
[^\(\)\ \t]+
)
\)
\s+
(?P<distribution>
[-+0-9a-zA-Z.]+
)
\;\s+urgency=
(?P<urgency>
\w+
)
(?:,|\n)
"""
_top_re = re.compile(_top_rules, re.X)
_bottom_rules = r"""
^
[ ]--[ ]
(?P<maintainer>
\S(?:[ ]?\S)*
)
[ ]{2}
(?P<date>
(.*)
)
\n
"""
_bottom_re = re.compile(_bottom_rules, re.X)
_ignore_re = re.compile(r'^(?: |\s*\n)')
class Entry(object):
__slot__ = ('distribution', 'source', 'version', 'urgency',
'maintainer', 'date')
def __init__(self, **kwargs):
for key, value in kwargs.items():
setattr(self, key, value)
def __init__(self, dir='', version=None, file=None) -> None:
if version is None:
version = Version
if file:
self._parse(version, file)
else:
with open(os.path.join(dir, "debian/changelog"),
encoding="UTF-8") as f:
self._parse(version, f)
def _parse(self, version, f) -> None:
top_match = None
line_no = 0
for line in f:
line_no += 1
if self._ignore_re.match(line):
pass
elif top_match is None:
top_match = self._top_re.match(line)
if not top_match:
raise Exception('invalid top line %d in changelog' %
line_no)
try:
v = version(top_match.group('version'))
except Exception:
if not len(self):
raise
v = Version(top_match.group('version'))
else:
bottom_match = self._bottom_re.match(line)
if not bottom_match:
raise Exception('invalid bottom line %d in changelog' %
line_no)
self.append(self.Entry(
distribution=top_match.group('distribution'),
source=top_match.group('source'),
version=v,
urgency=top_match.group('urgency'),
maintainer=bottom_match.group('maintainer'),
date=bottom_match.group('date')))
top_match = bottom_match = None
class Version(object):
revision: str | None
_epoch_re = re.compile(r'\d+$')
_upstream_re = re.compile(r'[0-9][A-Za-z0-9.+\-:~]*$')
_revision_re = re.compile(r'[A-Za-z0-9+.~]+$')
def __init__(self, version) -> None:
try:
split = version.index(':')
except ValueError:
epoch, rest = None, version
else:
epoch, rest = version[0:split], version[split+1:]
try:
split = rest.rindex('-')
except ValueError:
upstream, revision = rest, None
else:
upstream, revision = rest[0:split], rest[split+1:]
if (epoch is not None and not self._epoch_re.match(epoch)) or \
not self._upstream_re.match(upstream) or \
(revision is not None and not self._revision_re.match(revision)):
raise RuntimeError(u"Invalid debian version")
self.epoch = epoch and int(epoch)
self.upstream = upstream
self.revision = revision
def __str__(self) -> str:
return self.complete
@property
def complete(self) -> str:
if self.epoch is not None:
return u"%d:%s" % (self.epoch, self.complete_noepoch)
return self.complete_noepoch
@property
def complete_noepoch(self) -> str:
if self.revision is not None:
return u"%s-%s" % (self.upstream, self.revision)
return self.upstream
@property
def debian(self) -> str | None:
from warnings import warn
warn(u"debian argument was replaced by revision", DeprecationWarning,
stacklevel=2)
return self.revision
class VersionLinux(Version):
_upstream_re = re.compile(r"""
(?P<version>
\d+\.\d+
)
(?P<update>
(?:\.\d+)?
(?:-[a-z]+\d+)?
)
(?:
~
(?P<modifier>
.+?
)
)?
(?:
\.dfsg\.
(?P<dfsg>
\d+
)
)?
$
""", re.X)
_revision_re = re.compile(r"""
\d+
(\.\d+)?
(?:
(?P<revision_experimental>
~exp\d+
)
|
(?P<revision_security>
(?:[~+]deb\d+u\d+)+
)?
(?P<revision_backports>
~bpo\d+\+\d+
)?
|
(?P<revision_other>
.+?
)
)
(?:\+b\d+)?
$
""", re.X)
def __init__(self, version) -> None:
super(VersionLinux, self).__init__(version)
up_match = self._upstream_re.match(self.upstream)
assert self.revision is not None
rev_match = self._revision_re.match(self.revision)
if up_match is None or rev_match is None:
raise RuntimeError(u"Invalid debian linux version")
d = up_match.groupdict()
self.linux_modifier = d['modifier']
self.linux_version = d['version']
if d['modifier'] is not None:
assert not d['update']
self.linux_upstream = '-'.join((d['version'], d['modifier']))
else:
self.linux_upstream = d['version']
self.linux_upstream_full = self.linux_upstream + d['update']
self.linux_dfsg = d['dfsg']
d = rev_match.groupdict()
self.linux_revision_experimental = d['revision_experimental'] and True
self.linux_revision_security = d['revision_security'] and True
self.linux_revision_backports = d['revision_backports'] and True
self.linux_revision_other = d['revision_other'] and True
class PackageArchitecture(set[str]):
def __init__(
self,
v: str | Iterable[str] | None = None,
/,
) -> None:
if v:
if isinstance(v, str):
v = re.split(r'\s+', v.strip())
self |= frozenset(v)
def __str__(self) -> str:
return ' '.join(sorted(self))
class PackageDescription:
short: list[str]
long: list[str]
def __init__(
self,
v: str | Self | None = None,
/,
) -> None:
self.short = []
self.long = []
if v:
if isinstance(v, str):
desc_split = v.split('\n', 1)
self.append_short(desc_split[0])
if len(desc_split) == 2:
self.append(desc_split[1])
else:
self.short.extend(v.short)
self.long.extend(v.long)
def __str__(self) -> str:
from .utils import TextWrapper
wrap = TextWrapper(width=74, fix_sentence_endings=True).wrap
short = ', '.join(self.short)
long_pars = []
for i in self.long:
long_pars.append(wrap(i))
long = '\n.\n'.join('\n'.join(i) for i in long_pars)
return short + '\n' + long if long else short
def append(self, long: str) -> None:
long = long.strip()
if long:
self.long.extend(long.split('\n.\n'))
def append_short(self, short: str) -> None:
for i in [i.strip() for i in short.split(',')]:
if i:
self.short.append(i)
def extend(self, desc: PackageDescription) -> None:
self.short.extend(desc.short)
self.long.extend(desc.long)
class PackageRelationEntryOperator(enum.StrEnum):
OP_LT = '<<'
OP_LE = '<='
OP_EQ = '='
OP_NE = '!='
OP_GE = '>='
OP_GT = '>>'
def __neg__(self) -> PackageRelationEntryOperator:
return typing.cast(PackageRelationEntryOperator, {
self.OP_LT: self.OP_GE,
self.OP_LE: self.OP_GT,
self.OP_EQ: self.OP_NE,
self.OP_NE: self.OP_EQ,
self.OP_GE: self.OP_LT,
self.OP_GT: self.OP_LE,
}[self])
class PackageRelationEntry:
name: str
operator: typing.Optional[PackageRelationEntryOperator]
version: typing.Optional[str]
arches: PackageArchitecture
restrictions: PackageBuildprofile
__re = re.compile(
r'^(?P<name>\S+)'
r'(?: \((?P<operator><<|<=|=|!=|>=|>>)\s*(?P<version>[^)]+)\))?'
r'(?: \[(?P<arches>[^]]+)\])?'
r'(?P<restrictions>(?: <[^>]+>)*)$'
)
def __init__(
self,
v: str | Self,
/, *,
name: str | None = None,
arches: set[str] | None = None,
restrictions: PackageBuildprofile | str | None = None,
) -> None:
if isinstance(v, str):
match = self.__re.match(v)
if not match:
raise RuntimeError('Unable to parse dependency "%s"' % v)
self.name = name or match['name']
if operator := match['operator']:
self.operator = PackageRelationEntryOperator(operator)
else:
self.operator = None
self.version = match['version']
self.arches = PackageArchitecture(arches or match['arches'])
if isinstance(restrictions, PackageBuildprofile):
self.restrictions = restrictions.copy()
else:
self.restrictions = PackageBuildprofile.parse(
restrictions or match['restrictions'],
)
else:
self.name = name or v.name
self.operator = v.operator
self.version = v.version
self.arches = PackageArchitecture(arches or v.arches)
if isinstance(restrictions, str):
self.restrictions = PackageBuildprofile.parse(restrictions)
else:
self.restrictions = (restrictions or v.restrictions).copy()
def __str__(self):
ret = [self.name]
if self.operator and self.version:
ret.append(f'({self.operator} {self.version})')
if self.arches:
ret.append(f'[{self.arches}]')
if self.restrictions:
ret.append(str(self.restrictions))
return ' '.join(ret)
class PackageRelationGroup(list[PackageRelationEntry]):
def __init__(
self,
v: Iterable[PackageRelationEntry | str] | str | Self | None = None,
/, *,
arches: set[str] | None = None,
) -> None:
if v:
if isinstance(v, str):
v = (i.strip() for i in re.split(r'\|', v.strip()))
self.extend(PackageRelationEntry(i, arches=arches) for i in v if i)
def __str__(self) -> str:
return ' | '.join(str(i) for i in self)
def _merge_eq(self, v: PackageRelationGroup) -> typing.Optional[PackageRelationGroup]:
if all(
(
i.name == j.name and i.operator == j.operator
and i.version == j.version
) for i, j in zip(self, v)
):
return self
return None
class PackageRelation(list[PackageRelationGroup]):
Init: TypeAlias = PackageRelationGroup | Iterable[PackageRelationEntry] | str
def __init__(
self,
v: Iterable[Init] | str | Self | None = None,
/, *,
arches: set[str] | None = None,
) -> None:
if v:
if isinstance(v, str):
v = (i.strip() for i in re.split(r',', v.strip()))
self.extend(PackageRelationGroup(i, arches=arches) for i in v if i)
def __str__(self) -> str:
return ', '.join(str(i) for i in self)
def _merge_eq(self, v: PackageRelationGroup) -> typing.Optional[PackageRelationGroup]:
for i in self:
if i._merge_eq(v):
return i
return None
def merge(
self,
v: Init | str,
/,
) -> None:
v = PackageRelationGroup(v)
if g := self._merge_eq(v):
for i, j in zip(g, v):
i.arches |= j.arches
i.restrictions.update(j.restrictions)
else:
super().append(v)
@dataclasses.dataclass
class PackageBuildprofileEntry:
pos: set[str] = dataclasses.field(default_factory=set)
neg: set[str] = dataclasses.field(default_factory=set)
__re = re.compile(r'^<(?P<profiles>[a-z0-9. !-]+)>$')
def copy(self) -> Self:
return self.__class__(
pos=set(self.pos),
neg=set(self.neg),
)
@classmethod
def parse(cls, v: str, /) -> Self:
match = cls.__re.match(v)
if not match:
raise RuntimeError('Unable to parse build profile "%s"' % v)
ret = cls()
for i in re.split(r' ', match.group('profiles')):
if i:
if i[0] == '!':
ret.neg.add(i[1:])
else:
ret.pos.add(i)
return ret
def __eq__(self, other: object, /) -> bool:
if not isinstance(other, PackageBuildprofileEntry):
return NotImplemented
return self.pos == other.pos and self.neg == other.neg
def isdisjoint(self, other: Self, /) -> bool:
return not (self.issubset(other)) and not (self.issuperset(other))
def issubset(self, other: Self, /) -> bool:
'''
Test wether this build profile would select a subset of packages.
For positive profile matches: Ading profiles will select a subset.
For negative profile matches: Removing profiles will select a subset.
'''
return self.pos >= other.pos and self.neg <= other.neg
__le__ = issubset
def issuperset(self, other: Self, /) -> bool:
'''
Test wether this build profile would select a superset of packages.
For positive profile matches: Removing profiles will select a superset.
For negative profile matches: Adding profiles will select a superset.
'''
return self.pos <= other.pos and self.neg >= other.neg
__ge__ = issuperset
def update(self, other: Self, /) -> None:
'''
Update the build profiles, adding entries from other, merging if possible.
Negating entries (profile vs !profile) are completely removed.
All others remain if they are used on both sides.
'''
diff = (self.pos & other.neg) | (self.neg & other.pos)
self.pos &= other.pos - diff
self.neg &= other.neg - diff
__ior__ = update
def __str__(self) -> str:
s = ' '.join(itertools.chain(
sorted(self.pos),
(f'!{i}' for i in sorted(self.neg)),
))
return f'<{s}>'
class PackageBuildprofile(list[PackageBuildprofileEntry]):
__re = re.compile(r' *(<[^>]+>)(?: +|$)')
def copy(self) -> Self:
return self.__class__(i.copy() for i in self)
@classmethod
def parse(cls, v: str, /) -> Self:
ret = cls()
for match in cls.__re.finditer(v):
ret.append(PackageBuildprofileEntry.parse(match.group(1)))
return ret
def update(self, v: Self, /) -> None:
for i in v:
for j in self:
if not j.isdisjoint(i):
j.update(i)
break
else:
self.append(i)
__ior__ = update
def __str__(self) -> str:
return ' '.join(str(i) for i in self)
@dataclasses.dataclass
class _BasePackage:
name: Optional[str]
architecture: PackageArchitecture = field_deb822(
'Architecture',
default_factory=PackageArchitecture,
)
section: Optional[str] = field_deb822(
'Section',
default=None,
)
priority: Optional[str] = field_deb822(
'Priority',
default=None,
)
@dataclasses.dataclass
class SourcePackage(_BasePackage):
name: Optional[str] = field_deb822(
'Source',
default=None,
)
maintainer: Optional[str] = field_deb822(
'Maintainer',
default=None,
)
uploaders: Optional[str] = field_deb822(
'Uploaders',
default=None,
)
standards_version: Optional[str] = field_deb822(
'Standards-Version',
default=None,
)
build_depends: PackageRelation = field_deb822(
'Build-Depends',
default_factory=PackageRelation,
)
build_depends_arch: PackageRelation = field_deb822(
'Build-Depends-Arch',
default_factory=PackageRelation,
)
build_depends_indep: PackageRelation = field_deb822(
'Build-Depends-Indep',
default_factory=PackageRelation,
)
rules_requires_root: Optional[str] = field_deb822(
'Rules-Requires-Root',
default=None,
)
homepage: Optional[str] = field_deb822(
'Homepage',
default=None,
)
vcs_browser: Optional[str] = field_deb822(
'Vcs-Browser',
default=None,
)
vcs_git: Optional[str] = field_deb822(
'Vcs-Git',
default=None,
)
autobuild: Optional[str] = field_deb822(
'XS-Autobuild',
default=None,
)
@dataclasses.dataclass
class BinaryPackage(_BasePackage):
name: str = field_deb822('Package')
# Build-Depends* fields aren't allowed for binary packages in
# the real control file, but we move them to the source
# package
build_depends: PackageRelation = field_deb822(
'Build-Depends',
default_factory=PackageRelation,
deb822_dump=None,
)
build_profiles: PackageBuildprofile = field_deb822(
'Build-Profiles',
deb822_load=PackageBuildprofile.parse,
default_factory=PackageBuildprofile,
)
built_using: PackageRelation = field_deb822(
'Built-Using',
default_factory=PackageRelation,
)
provides: PackageRelation = field_deb822(
'Provides',
default_factory=PackageRelation,
)
pre_depends: PackageRelation = field_deb822(
'Pre-Depends',
default_factory=PackageRelation,
)
depends: PackageRelation = field_deb822(
'Depends',
default_factory=PackageRelation,
)
recommends: PackageRelation = field_deb822(
'Recommends',
default_factory=PackageRelation,
)
suggests: PackageRelation = field_deb822(
'Suggests',
default_factory=PackageRelation,
)
replaces: PackageRelation = field_deb822(
'Replaces',
default_factory=PackageRelation,
)
breaks: PackageRelation = field_deb822(
'Breaks',
default_factory=PackageRelation,
)
conflicts: PackageRelation = field_deb822(
'Conflicts',
default_factory=PackageRelation,
)
multi_arch: Optional[str] = field_deb822(
'Multi-Arch',
default=None,
)
description: PackageDescription = field_deb822(
'Description',
default_factory=PackageDescription,
)
meta_architectures: PackageArchitecture = dataclasses.field(
default_factory=PackageArchitecture,
)
meta_rules_check_packages: bool = False
meta_rules_makeflags: dict = field_deb822(
'Meta-Rules-Makeflags',
default_factory=dict,
deb822_load=lambda v: dict(i.split('=', 1) for i in shlex.split(v)),
deb822_dump=None,
)
meta_rules_ruleids: dict = dataclasses.field(default_factory=dict)
meta_rules_target: Optional[str] = field_deb822(
'Meta-Rules-Target',
default=None,
deb822_dump=None,
)