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#
# File: geneticone/gui/gui_helper.py
# This file is part of the Genetic/One-Project, a graphical portage-frontend.
#
# Copyright (C) 2006 Necoro d.M.
# This is free software. You may redistribute copies of it under the terms of
# the GNU General Public License version 2.
# There is NO WARRANTY, to the extent permitted by law.
#
# Written by Necoro d.M. <necoro@necoro.net>
from geneticone import backend
from geneticone.backend import flags
from geneticone.helper import *
from subprocess import *
from threading import Thread
import pty
import vte
class EmergeQueue:
"""This class manages the emerge queue."""
def __init__ (self, tree = None, console = None, packages = None):
"""Constructor.
@param tree: Tree to append all the items to. Default: None.
@type tree: gtk.TreeStore
@param console: Output is shown here. Default: None
@type console: vte.Terminal
@param packages: The list of packages sorted by categories. We will delete the appropriate category if we updated sth. Default: None
@type packages: dictionary: {category: list_of_packages}."""
self.mergequeue = []
self.unmergequeue = []
self.iters = {}
self.deps = {}
self.tree = tree
self.console = console
self.packages = packages
if self.tree:
self.emergeIt = self.tree.append(None, ["Emerge"])
self.unmergeIt = self.tree.append(None, ["Unmerge"])
else:
self.emergeIt = self.unmergeIt = None
def update_tree (self, it, cpv):
"""This updates the tree recursivly.
@param it: iterator where to append
@type it: gtk.TreeIter
@param cpv: The package to append.
@type cpv: string (cat/pkg-ver)
@raise geneticone.BlockedException: When occured during dependency-calculation."""
# get depencies
if cpv in self.deps:
return # in list already
else:
deps = backend.find_packages("="+cpv)[0].get_dep_packages()
self.deps.update({cpv : deps})
subIt = self.tree.append(it, [cpv])
# recursive call
for d in deps:
try:
self.update_tree(subIt, d)
except backend.BlockedException, e:
# remove the project
while self.tree.iter_parent(subIt):
subIt = self.tree.iter_parent(subIt)
self.remove_children(subIt)
raise e
# add iter
self.iters.update({cpv: subIt})
def append (self, cpv, unmerge = False, update = False):
"""Appends a cpv either to the merge queue or to the unmerge-queue.
Also updates the tree-view.
@param cpv: Package to add
@type cpv: string (cat/pkg-ver)
@param unmerge: Set to True if you want to unmerge this package - else False. Default: False
@type unmerge: boolean
@param update: Set to True if a package is going to be updated (e.g. if the use-flags changed). Default: False
@type update: boolean"""
if not unmerge:
try:
# insert dependencies
pkg = backend.find_packages("="+cpv)[0]
deps = pkg.get_dep_packages()
if update:
if deps == self.deps[cpv]:
return # nothing changed - return
else:
parentIt = self.tree.iter_parent(self.iters[cpv])
self.remove_children(self.iters[cpv], False) # this is needed to def delete everything
self.remove(self.iters[cpv], False)
self.update_tree(parentIt, cpv)
else: # not update
self.mergequeue.append(cpv)
if self.emergeIt: self.update_tree(self.emergeIt, cpv)
except backend.BlockedException, e : # there is sth blocked --> call blocked_dialog
blocks = e[0]
blocked_dialog(cpv, blocks)
return
else: # unmerge
self.unmergequeue.append(cpv)
if self.unmergeIt: # update tree
self.tree.append(self.unmergeIt, [cpv])
def _update_packages(self, packages, process = None):
"""This updates the packages-list. It simply removes all affected categories so they have to be rebuilt.
@param packages: The packages which we emerged.
@type packages: list of cpvs
@param process: The process we have to wait for before we can do our work. Default: None.
@type process: subprocess.Popen"""
if process: process.wait()
for p in packages:
try:
cat = backend.split_package_name(p)[0] # get category
while cat[0] in ["=",">","<","!"]:
cat = cat[1:]
del self.packages[cat]
debug("Category %s marked for refreshing" % cat)
except KeyError: # not in self.packages - ignore
pass
def _emerge (self, options, packages, it):
"""Calls emerge and updates the terminal.
@param options: options to send to emerge
@type options: list
@param packages: packages to emerge
@type packages: list
@param it: Iterator which points to an entry whose children will be removed after completion.
@type it: gtk.TreeIter"""
# open tty
(master, slave) = pty.openpty()
self.console.set_pty(master)
# start emerge
process = Popen(["/usr/bin/python","/usr/bin/emerge"]+options+packages, stdout = slave, stderr = STDOUT, shell = False)
Thread(target=self._update_packages, args=(packages, process)).start()
# remove
self.remove_children(it)
def emerge (self, force = False):
"""Emerges everything in the merge-queue.
@param force: If False, '-pv' is send to emerge. Default: False.
@type force: boolean"""
if len(self.mergequeue) == 0: return # nothing in queue
# prepare package-list
list = []
for k in self.mergequeue:
list += ["="+k]
s = []
if not force: s = ["-pv"]
self._emerge(s, list, self.emergeIt)
def unmerge (self, force = False):
"""Unmerges everything in the umerge-queue.
@param force: If False, '-pv' is send to emerge. Default: False.
@type force: boolean"""
if len(self.unmergequeue) == 0: return # nothing in queue
list = self.unmergequeue[:] # copy the unmerge-queue
# set options
s = ["-C"]
if not force: s = ["-Cpv"]
self._emerge(s,list, self.unmergeIt)
def remove_children (self, parentIt, removeNewFlags = True):
"""Removes all children of a given parent TreeIter recursivly.
@param parentIt: The iter from which to remove all children.
@type parentIt: gtk.TreeIter
@param removeNewFlags: True if new flags should be removed; False otherwise. Default: True.
@type removeNewFlags: boolean"""
childIt = self.tree.iter_children(parentIt)
while childIt:
if (self.tree.iter_has_child(childIt)): # recursive call
self.remove_children(childIt, removeNewFlags)
temp = childIt
childIt = self.tree.iter_next(childIt)
self.remove(temp, removeNewFlags)
def remove (self, it, removeNewFlags = True):
"""Removes a specific item in the tree. This does not remove the top-entries.
@param it: Iterator which points to the entry we are going to remove.
@type it: gtk.TreeIter
@param removeNewFlags: True if new flags should be removed; False otherwise. Default: True.
@type removeNewFlags: boolean"""
if self.tree.iter_parent(it): # NEVER remove our top stuff
cpv = self.tree.get_value(it,0)
if self.tree.get_string_from_iter(it).split(":")[0] == self.tree.get_string_from_iter(self.emergeIt): # in Emerge
del self.iters[cpv]
del self.deps[cpv]
try:
self.mergequeue.remove(cpv)
except ValueError: # this is a dependency - ignore
pass
if removeNewFlags: flags.remove_new_use_flags(cpv)
else: # in Unmerge
self.unmergequeue.remove(cpv)
self.tree.remove(it)
def blocked_dialog (blocked, blocks):
dialog = gtk.MessageDialog(None, gtk.DIALOG_MODAL, gtk.MESSAGE_ERROR, gtk.BUTTONS_OK, blocked+" is blocked by "+blocks+".\nPlease unmerge the blocking package.")
dialog.run()
dialog.destroy()
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