cmds.distro: Move all modules to lib

Functions abstracting the distribution are not only needed in the
context of the distro subcommand, but also by other code, so make the
bulk of the code abstracting the distribution available in some place
more universally useful than below cmds.distro.

This commit leaves the source files mostly unchanged. They are only
patched to fix import paths, so that functionality is preserved.
Refactoring the code from command-line API to library API will be
done by the next commit.

Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/cmds/distro/Cmd.py

@@ -2,13 +2,15 @@
 
 import os, importlib
 
+from ...lib.log import *
+from ...lib.distros.Util import Util
+
 from ..Cmd import Cmd as Base
 from ..CmdDistro import CmdDistro
-from .backend.Util import Util
 
 class Cmd(Base): # export
 
-    from .backend.Backend import Backend
+    from ...lib.distros.Backend import Backend
 
     def __init__(self, parent: CmdDistro, name: str, help: str) -> None:
         super().__init__(parent, name, help)
@@ -35,16 +37,16 @@ class Cmd(Base): # export
                     backend_id = 'redhat'
                 case 'opensuse' | 'suse':
                     backend_id = 'suse'
-            self.__backend_path = (
-                os.path.splitext(__name__)[0]
-                + '.backend.'
-                + backend_id
-                + '.'
-            )
+            self.__backend_path = 'jw.pkg.lib.distros.' + backend_id + '.'
         return self.__backend_path
 
     def _instantiate(self, name: str, *args, **kwargs):
-        module = importlib.import_module(self._backend_path + name)
+        module_path = self._backend_path + name
+        try:
+            module = importlib.import_module(module_path)
+        except Exception as e:
+            log(ERR, f'Failed to import module {module_path} ({str(e)})')
+            raise
         cls = getattr(module, name)
         return cls(self, *args, **kwargs)
 

src/python/jw/pkg/cmds/distro/CmdSelect.py

@@ -3,10 +3,10 @@
 from argparse import Namespace, ArgumentParser
 import re
 
+from ...lib.Package import Package
+from ...lib.distros.BeSelect import BeSelect
 from ..CmdDistro import CmdDistro
-from .lib.Package import Package
 from .Cmd import Cmd
-from .backend.BeSelect import BeSelect
 
 class CmdSelect(Cmd): # export
 

src/python/jw/pkg/cmds/distro/pkg/Cmd.py

@@ -7,7 +7,7 @@ from ..CmdPkg import CmdPkg as Parent
 
 class Cmd(Base): # export
 
-    from ..backend.Backend import Backend
+    from ....lib.distros.Backend import Backend
 
     def __init__(self, parent: Parent, name: str, help: str) -> None:
         super().__init__(parent, name, help)

src/python/jw/pkg/lib/Package.py

@@ -0,0 +1,51 @@
+# -*- coding: utf-8 -*-
+
+from typing import Any
+
+meta_tags = [
+    "name",
+    "vendor",
+    "packager",
+    "url",
+    "maintainer",
+]
+
+class Package:
+
+    name: str = None
+    vendor: str|None = None
+    packager: str|None = None
+    url: str|None = None
+    maintainer: str|None = None
+
+    @classmethod
+    def parse_spec_str(cls, spec: str, delimiter='|'):
+        tags = spec.split(delimiter)
+        if len(tags) != 5:
+            raise ValueError(f'Invalid package spec string \"{spec}\"')
+        return cls(name=tags[0], vendor=tags[1], packager=tags[2], url=tags[3], maintainer=tags[4])
+
+    @classmethod
+    def parse_specs_str(cls, specs: str, delimiter='|'):
+        ret: list[Package] = []
+        for spec in specs.splitlines():
+            ret.append(cls.parse_spec_str(spec))
+        return ret
+
+    @classmethod
+    def order_tags(cls, mapping: dict[str, Any]):
+        ret: dict[str, Any] = {}
+        for tag in meta_tags:
+            ret[tag] = mapping.get(tag, '')
+        return ret
+
+    def __init__(self, name: str, vendor: str|None=None, packager: str|None=None, url: str|None=None, maintainer: str|None=None):
+        self.name = name
+        self.vendor = vendor
+        self.packager = packager
+        self.url = url
+        self.maintainer = maintainer
+
+    def __repr__(self) -> str:
+        global meta_tags
+        return '\n'.join([f'{key:<15}: {getattr(self, key)}' for key in meta_tags])

src/python/jw/pkg/lib/distros/Backend.py

@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import annotations
+from typing import TYPE_CHECKING
+
+from ..util import run_sudo
+
+if TYPE_CHECKING:
+    from ..Cmd import Cmd
+
+class Backend:
+
+    def __init__(self, parent: Cmd):
+        self.__parent = parent
+
+    async def _sudo(self, *args, **kwargs):
+        return await run_sudo(*args, interactive=self.interactive, **kwargs)
+
+    @property
+    def util(self):
+        return self.__parent.util
+
+    @property
+    def parent(self):
+        return self.__parent
+
+    @property
+    def interactive(self) -> bool:
+        return self.__parent.interactive

src/python/jw/pkg/lib/distros/BeDelete.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+
+import abc
+from argparse import Namespace
+
+from .Backend import Backend as Base
+from ..Cmd import Cmd as Parent
+
+class BeDelete(Base):
+
+    def __init__(self, parent: Parent):
+        super().__init__(parent)
+
+    @abc.abstractmethod
+    async def run(self, args: Namespace) -> None:
+        pass

src/python/jw/pkg/lib/distros/BeDup.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+
+import abc
+from argparse import Namespace
+
+from .Backend import Backend as Base
+from ..Cmd import Cmd as Parent
+
+class BeDup(Base):
+
+    def __init__(self, parent: Parent):
+        super().__init__(parent)
+
+    @abc.abstractmethod
+    async def run(self, args: Namespace) -> None:
+        pass

src/python/jw/pkg/lib/distros/BeInstall.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+
+import abc
+from argparse import Namespace
+
+from .Backend import Backend as Base
+from ..Cmd import Cmd as Parent
+
+class BeInstall(Base):
+
+    def __init__(self, parent: Parent):
+        super().__init__(parent)
+
+    @abc.abstractmethod
+    async def run(self, args: Namespace) -> None:
+        pass

src/python/jw/pkg/lib/distros/BePkg.py

@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import annotations
+from typing import Iterable, TYPE_CHECKING
+
+import abc
+
+from ..Package import Package
+from .Backend import Backend as Base
+
+if TYPE_CHECKING:
+    from ..Cmd import Cmd as Parent
+
+class BePkg(Base):
+
+    def __init__(self, parent: Parent):
+        super().__init__(parent)
+
+    async def files(self, name: str) -> Iterable[str]:
+        return await self._files(name)
+
+    @abc.abstractmethod
+    async def _files(self, name: str) -> Iterable[str]:
+        pass
+
+    async def meta_data(self, names: Iterable[str]) -> Iterable[Package]:
+        return await self._meta_data(names)
+
+    @abc.abstractmethod
+    async def _meta_data(self, names: Iterable[str]) -> Iterable[Package]:
+        pass

src/python/jw/pkg/lib/distros/BeRebootRequired.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+
+import abc
+from argparse import Namespace
+
+from .Backend import Backend as Base
+from ..Cmd import Cmd as Parent
+
+class BeRebootRequired(Base):
+
+    def __init__(self, parent: Parent):
+        super().__init__(parent)
+
+    @abc.abstractmethod
+    async def run(self, args: Namespace) -> None:
+        pass

src/python/jw/pkg/lib/distros/BeRefresh.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+
+import abc
+from argparse import Namespace
+
+from .Backend import Backend as Base
+from ..Cmd import Cmd as Parent
+
+class BeRefresh(Base):
+
+    def __init__(self, parent: Parent):
+        super().__init__(parent)
+
+    @abc.abstractmethod
+    async def run(self, args: Namespace) -> None:
+        pass

src/python/jw/pkg/lib/distros/BeSelect.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import annotations
+from typing import TYPE_CHECKING
+
+import abc
+from typing import Iterable
+
+from .Backend import Backend as Base
+
+if TYPE_CHECKING:
+    from ..Cmd import Cmd as Parent
+    from .Package import Package
+
+class BeSelect(Base):
+
+    def __init__(self, parent: Parent):
+        super().__init__(parent)
+
+    @property
+    async def all_installed_packages(self) -> Iterable[Package]:
+        return await self._all_installed_packages()
+
+    @abc.abstractmethod
+    async def _all_installed_packages(self) -> Iterable[Package]:
+        pass

src/python/jw/pkg/lib/distros/Makefile

@@ -0,0 +1,4 @@
+TOPDIR = ../../../../../..
+
+include $(TOPDIR)/make/proj.mk
+include $(JWBDIR)/make/py-mod.mk

src/python/jw/pkg/lib/distros/Util.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+
+from __future__ import annotations
+from typing import TYPE_CHECKING
+
+from ..util import run_sudo
+
+if TYPE_CHECKING:
+    from ..Cmd import Cmd
+
+class Util:
+
+    def __init__(self, parent: Cmd):
+        self.__parent = parent
+
+    async def _sudo(self, *args, **kwargs):
+        return await run_sudo(*args, interactive=self.interactive, **kwargs)
+
+    @property
+    def parent(self):
+        return self.__parent
+
+    @property
+    def interactive(self) -> bool:
+        return self.__parent.interactive

src/python/jw/pkg/lib/distros/arch/Dup.py

@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+
+from argparse import Namespace
+
+from ...Cmd import Cmd
+from ..BeDup import BeDup as Base
+
+class Dup(Base):
+
+    def __init__(self, parent: Cmd):
+        super().__init__(parent)
+
+    async def run(self, args: Namespace):
+        pm_args = ['-Su']
+        if args.download_only:
+            pm_args.append('-w')
+        return await self.util.pacman(pm_args)

src/python/jw/pkg/lib/distros/arch/Install.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+
+from argparse import Namespace
+
+from ...Cmd import Cmd
+from ..BeInstall import BeInstall as Base
+
+class Install(Base):
+
+    def __init__(self, parent: Cmd):
+        super().__init__(parent)
+
+    async def run(self, args: Namespace):
+        if args.only_update:
+            raise NotImplementedError('--only-update is not yet implemented for pacman')
+        pacman_args = ['-S', '--needed']
+        pacman_args.extend(args.packages)
+        await self.util.pacman(*pacman_args)

src/python/jw/pkg/lib/distros/arch/Makefile

@@ -0,0 +1,4 @@
+TOPDIR = ../../../../../../..
+
+include $(TOPDIR)/make/proj.mk
+include $(JWBDIR)/make/py-mod.mk

src/python/jw/pkg/lib/distros/arch/Refresh.py

@@ -0,0 +1,14 @@
+# -*- coding: utf-8 -*-
+
+from argparse import Namespace
+
+from ...Cmd import Cmd
+from ..BeRefresh import BeRefresh as Base
+
+class Refresh(Base):
+
+    def __init__(self, parent: Cmd):
+        super().__init__(parent)
+
+    async def run(self, args: Namespace):
+        raise NotImplementedError('distro refresh is not yet implemented for Arch-like distributions')

src/python/jw/pkg/lib/distros/arch/Util.py

@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+
+from ...Cmd import Cmd
+from ..Util import Util as Base
+
+class Util(Base):
+
+    def __init__(self, parent: Cmd):
+        super().__init__(parent)
+
+    async def pacman(self, *args):
+        cmd = ['/usr/bin/pacman']
+        if not self.interactive:
+            cmd.extend(['--noconfirm'])
+        cmd.extend(args)
+        return await self._sudo(cmd)

src/python/jw/pkg/lib/distros/debian/Delete.py

@@ -0,0 +1,14 @@
+# -*- coding: utf-8 -*-
+
+from argparse import Namespace
+
+from ...Cmd import Cmd
+from ..BeDelete import BeDelete as Base
+
+class Delete(Base):
+
+    def __init__(self, parent: Cmd):
+        super().__init__(parent)
+
+    async def run(self, args: Namespace):
+        return await self.util.dpkg(['-P', *args.names], sudo=True)