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#!/usr/bin/python
# Copyright 2003-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
import os
import sys
import gentoolkit.pprinter as pp
from gentoolkit.eclean.pkgindex import PkgIndex
class CleanUp:
"""Performs all cleaning actions to distfiles or package directories.
@param controller: a progress output/user interaction controller function
which returns a Boolean to control file deletion
or bypassing/ignoring
"""
def __init__(self, controller):
self.controller = controller
def clean_dist(self, clean_dict):
"""Calculate size of each entry for display, prompt user if needed,
delete files if approved and return the total size of files that
have been deleted.
@param clean_dict: dictionary of {'display name':[list of files]}
@rtype: int
@return: total size that was cleaned
"""
file_type = "file"
clean_size = 0
# clean all entries one by one; sorting helps reading
for key in sorted(clean_dict):
clean_size += self._clean_files(clean_dict[key], key, file_type)
# return total size of deleted or to delete files
return clean_size
def clean_pkgs(self, clean_dict, pkgdir):
"""Calculate size of each entry for display, prompt user if needed,
delete files if approved and return the total size of files that
have been deleted.
@param clean_dict: dictionary of {'display name':[list of files]}
@param metadata: package index of type portage.getbinpkg.PackageIndex()
@param pkgdir: path to the package directory to be cleaned
@rtype: int
@return: total size that was cleaned
"""
file_type = "binary package"
clean_size = 0
# clean all entries one by one; sorting helps reading
for key in sorted(clean_dict):
clean_size += self._clean_files(clean_dict[key], key, file_type)
# run 'emaint --fix' here
if clean_size:
index_control = PkgIndex(self.controller)
# emaint is not yet importable so call it
# print a blank line here for separation
print()
clean_size += index_control.call_emaint()
# return total size of deleted or to delete files
return clean_size
def pretend_clean(self, clean_dict):
"""Shortcut function that calculates total space savings
for the files in clean_dict.
@param clean_dict: dictionary of {'display name':[list of files]}
@rtype: integer
@return: total size that would be cleaned
"""
file_type = "file"
clean_size = 0
# tally all entries one by one; sorting helps reading
for key in sorted(clean_dict):
key_size = self._get_size(clean_dict[key])
self.controller(key_size, key, clean_dict[key], file_type)
clean_size += key_size
return clean_size
def _get_size(self, key):
"""Determine the total size for an entry (may be several files)."""
key_size = 0
for file_ in key:
# print file_
# get total size for an entry (may be several files, and
# links don't count
# ...get its statinfo
try:
statinfo = os.stat(file_)
if statinfo.st_nlink == 1:
key_size += statinfo.st_size
except EnvironmentError as er:
print(pp.error("Could not get stat info for:" + file_), file=sys.stderr)
print(pp.error("Error: %s" % str(er)), file=sys.stderr)
return key_size
def _clean_files(self, files, key, file_type):
"""File removal function."""
clean_size = 0
for file_ in files:
# print file_, type(file_)
# ...get its statinfo
try:
statinfo = os.stat(file_)
except EnvironmentError as er:
if not os.path.exists(os.readlink(file_)):
try:
os.remove(file_)
print(
pp.error("Removed broken symbolic link " + file_),
file=sys.stderr,
)
break
except EnvironmentError as er:
print(
pp.error("Error deleting broken symbolic link " + file_),
file=sys.stderr,
)
print(pp.error("Error: %s" % str(er)), file=sys.stderr)
break
else:
print(
pp.error("Could not get stat info for:" + file_),
file=sys.stderr,
)
print(pp.error("Error: %s" % str(er)), file=sys.stderr)
if self.controller(statinfo.st_size, key, file_, file_type):
# ... try to delete it.
try:
os.unlink(file_)
# only count size if successfully deleted and not a link
if statinfo.st_nlink == 1:
clean_size += statinfo.st_size
try:
os.rmdir(os.path.dirname(file_))
except OSError:
pass
except EnvironmentError as er:
print(pp.error("Could not delete " + file_), file=sys.stderr)
print(pp.error("Error: %s" % str(er)), file=sys.stderr)
return clean_size
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