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#!/usr/bin/env python
# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
BitBake 'Event' implementation
Classes and functions for manipulating 'events' in the
BitBake build tools.
Copyright (C) 2003, 2004 Chris Larson
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.
"""
import os, re
import bb.data
import bb.utils
class Event:
"""Base class for events"""
type = "Event"
def __init__(self, d = bb.data.init()):
self._data = d
def getData(self):
return self._data
def setData(self, data):
self._data = data
data = property(getData, setData, None, "data property")
NotHandled = 0
Handled = 1
Registered = 10
AlreadyRegistered = 14
# Internal
_handlers = []
_handlers_dict = {}
def tmpHandler(event):
"""Default handler for code events"""
return NotHandled
def defaultTmpHandler():
tmp = "def tmpHandler(e):\n\t\"\"\"heh\"\"\"\n\treturn NotHandled"
comp = bb.utils.better_compile(tmp, "tmpHandler(e)", "bb.event.defaultTmpHandler")
return comp
def fire(event):
"""Fire off an Event"""
for h in _handlers:
if type(h).__name__ == "code":
exec(h)
if tmpHandler(event) == Handled:
return Handled
else:
if h(event) == Handled:
return Handled
return NotHandled
def register(name, handler):
"""Register an Event handler"""
# already registered
if name in _handlers_dict:
return AlreadyRegistered
if handler is not None:
# handle string containing python code
if type(handler).__name__ == "str":
_registerCode(handler)
else:
_handlers.append(handler)
_handlers_dict[name] = 1
return Registered
def _registerCode(handlerStr):
"""Register a 'code' Event.
Deprecated interface; call register instead.
Expects to be passed python code as a string, which will
be passed in turn to compile() and then exec(). Note that
the code will be within a function, so should have had
appropriate tabbing put in place."""
tmp = "def tmpHandler(e):\n%s" % handlerStr
comp = bb.utils.better_compile(tmp, "tmpHandler(e)", "bb.event._registerCode")
# prevent duplicate registration
_handlers.append(comp)
def remove(name, handler):
"""Remove an Event handler"""
_handlers_dict.pop(name)
if type(handler).__name__ == "str":
return _removeCode(handler)
else:
_handlers.remove(handler)
def _removeCode(handlerStr):
"""Remove a 'code' Event handler
Deprecated interface; call remove instead."""
tmp = "def tmpHandler(e):\n%s" % handlerStr
comp = bb.utils.better_compile(tmp, "tmpHandler(e)", "bb.event._removeCode")
_handlers.remove(comp)
def getName(e):
"""Returns the name of a class or class instance"""
if getattr(e, "__name__", None) == None:
return e.__class__.__name__
else:
return e.__name__
class PkgBase(Event):
"""Base class for package events"""
def __init__(self, t, d = bb.data.init()):
self._pkg = t
Event.__init__(self, d)
def getPkg(self):
return self._pkg
def setPkg(self, pkg):
self._pkg = pkg
pkg = property(getPkg, setPkg, None, "pkg property")
class BuildBase(Event):
"""Base class for bbmake run events"""
def __init__(self, n, p, c, failures = 0):
self._name = n
self._pkgs = p
Event.__init__(self, c)
self._failures = failures
def getPkgs(self):
return self._pkgs
def setPkgs(self, pkgs):
self._pkgs = pkgs
def getName(self):
return self._name
def setName(self, name):
self._name = name
def getCfg(self):
return self.data
def setCfg(self, cfg):
self.data = cfg
def getFailures(self):
"""
Return the number of failed packages
"""
return self._failures
pkgs = property(getPkgs, setPkgs, None, "pkgs property")
name = property(getName, setName, None, "name property")
cfg = property(getCfg, setCfg, None, "cfg property")
class DepBase(PkgBase):
"""Base class for dependency events"""
def __init__(self, t, data, d):
self._dep = d
PkgBase.__init__(self, t, data)
def getDep(self):
return self._dep
def setDep(self, dep):
self._dep = dep
dep = property(getDep, setDep, None, "dep property")
class PkgStarted(PkgBase):
"""Package build started"""
class PkgFailed(PkgBase):
"""Package build failed"""
class PkgSucceeded(PkgBase):
"""Package build completed"""
class BuildStarted(BuildBase):
"""bbmake build run started"""
class BuildCompleted(BuildBase):
"""bbmake build run completed"""
class UnsatisfiedDep(DepBase):
"""Unsatisfied Dependency"""
class RecursiveDep(DepBase):
"""Recursive Dependency"""
class NoProvider(Event):
"""No Provider for an Event"""
def __init__(self, item, data,runtime=False):
Event.__init__(self, data)
self._item = item
self._runtime = runtime
def getItem(self):
return self._item
def isRuntime(self):
return self._runtime
class MultipleProviders(Event):
"""Multiple Providers"""
def __init__(self, item, candidates, data, runtime = False):
Event.__init__(self, data)
self._item = item
self._candidates = candidates
self._is_runtime = runtime
def isRuntime(self):
"""
Is this a runtime issue?
"""
return self._is_runtime
def getItem(self):
"""
The name for the to be build item
"""
return self._item
def getCandidates(self):
"""
Get the possible Candidates for a PROVIDER.
"""
return self._candidates
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