/usr/share/pyshared/lpltk/attachments.py is in python-launchpadlib-toolkit 2.3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import gzip
import os
import shutil
import tarfile
from copy import copy
from locale import getpreferredencoding
from zipfile import ZipFile
from attachment import Attachment
from fnmatch import fnmatch
# Attachments
#
# A collection class for files added into launchpad, also known
# as an attachment.
#
class LocalAttachment(object):
class Data:
class Fd(file):
@property
def content_type(self):
return None
@property
def len(self):
stat = os.stat(self.name)
return stat.st_size
def set_path(self, path):
self.__path = path
def open(self):
if self.__path:
return LocalAttachment.Data.Fd(self.__path)
def __init__(self):
self.data = LocalAttachment.Data()
class Attachments(object):
# __init__
#
# Initialize the instance from a Launchpad bug.
#
def __init__(self, tkbug):
self.__tkbug = tkbug
self.__commit_changes = tkbug.commit_changes
self.__attachments = None
self.__filters = []
self.__download = False
self.__download_dir = None
self.__extract = False
self.__extract_dir = None
self.__extract_limit = None
self.__gzip = False
self.__gzip_dir = None
self.__force_mimetype = False
# __len__
#
def __len__(self):
return len(list(self.__iter__()))
# __getitem__
#
def __getitem__(self, key):
return list(self.__iter__())[key]
# __iter__
#
def __iter__(self):
self.__fetch_if_needed()
for attachment in self.__attachments:
if self.__gzip:
attachment = self.__gzip_if_needed(attachment)
included = True
a = Attachment(self.__tkbug, attachment, self.__force_mimetype)
for f, params in self.__filters:
if not f(a, params):
included = False
if included:
if self.__extract and \
a.is_archive_type('tar') and \
not self.__exceeds_tar_limit(a.remotefd):
for member in self.__get_tar_members(a):
yield member
elif self.__extract and \
a.is_archive_type('zip') and \
not self.__exceeds_zip_limit(a.remotefd):
for member in self.__get_zip_members(a):
yield member
else:
if self.__download and \
not isinstance(attachment, LocalAttachment):
tmpfile = os.path.join(self.__download_dir, a.title)
with open(tmpfile, 'w+b') as localfd:
localfd.write(a.content)
yield a
# __contains__
#
def __contains__(self, item):
return item in self.__iter__()
# __fetch_if_needed
#
def __fetch_if_needed(self):
if self.__attachments == None:
self.__attachments = self.__tkbug.lpbug.attachments_collection
def __gzip_if_needed(self, attachment):
filters = dict(self.__filters)
if not filters.has_key(filter_size_between):
return attachment
minsize, maxsize = filters[filter_size_between]
remotefd = attachment.data.open()
if remotefd.len > maxsize:
gzip_attachment = LocalAttachment()
gzip_attachment.title = attachment.title + '.gz'
gzip_attachment.type = attachment.type
tmpfile = os.path.join(self.__gzip_dir, gzip_attachment.title)
gzipfd = gzip.open(tmpfile, 'w+b')
gzipfd.write(remotefd.read())
gzipfd.close()
gzip_attachment.data.set_path(tmpfile)
attachment = gzip_attachment
remotefd.close()
return attachment
def __find_mime_type(self, attachment):
for pattern, mimetype in self.MIMETYPES.iteritems():
if fnmatch(attachment.title, pattern):
return mimetype
def __get_tar_members(self, tarattachment):
tar = tarfile.open(fileobj=tarattachment.remotefd)
attachments = []
for member in tar:
if member.isfile():
attachment = LocalAttachment()
attachment.title = os.path.basename(member.name)
if (fnmatch(attachment.title, '*.diff') or
fnmatch(attachment.title, '*.patch')):
attachment.type = 'Patch'
else:
attachment.type = None
tar.extract(member, self.__extract_dir)
oldpath = os.path.join(self.__extract_dir,
member.name)
newpath = os.path.join(self.__extract_dir,
os.path.basename(member.name))
shutil.move(oldpath, newpath)
attachment.data.set_path(newpath)
attachments.append(Attachment(self.__tkbug,
attachment,
self.__force_mimetype))
return attachments
def __exceeds_tar_limit(self, fd):
if not self.__extract_limit:
return False
tar = tarfile.open(fileobj=fd)
result = len(tar.getnames()) > self.__extract_limit
fd.seek(0)
return result
def __get_zip_members(self, zipattachment):
zip = ZipFile(file=zipattachment.remotefd)
attachments = []
for member in [zip.open(name) for name in zip.namelist()]:
if member.name[-1] == '/':
continue
attachment = LocalAttachment()
attachment.title = os.path.basename(member.name)
if (fnmatch(attachment.title, '*.diff') or
fnmatch(attachment.title, '*.patch')):
attachment.type = 'Patch'
else:
attachment.type = None
zip.extract(member.name, self.__extract_dir)
oldpath = os.path.join(self.__extract_dir, member.name)
newpath = os.path.join(self.__extract_dir,
os.path.basename(member.name))
shutil.move(oldpath, newpath)
attachment.data.set_path(newpath)
attachments.append(Attachment(self.__tkbug,
attachment,
self.__force_mimetype))
return attachments
def __exceeds_zip_limit(self, fd):
if not self.__extract_limit:
return False
zip = ZipFile(file=fd)
result = len(zip.namelist()) > self.__extract_limit
fd.seek(0)
return result
def download_in_dir(self, download_dir):
self.__download = True
self.__download_dir = download_dir
def extract_archives(self, extract_dir, extract_limit=None):
self.__extract = True
self.__extract_dir = extract_dir
self.__extract_limit = extract_limit
def try_gzip(self, gzip_dir):
self.__gzip = True
self.__gzip_dir = gzip_dir
def force_mimetype(self):
self.__force_mimetype = True
def add_filter(self, f, params):
""" Add filter f to constrain the list of attachments.
f is a function which takes as arguments an Attachment
object, and a list of parameters specific to the given
filter.
"""
self.__filters.append( (f, params) )
def check_required_files(self, glob_patterns):
""" Check that collection includes required filenames
Given a list of glob filename patterns, looks through the
attachments to verify at least one attachment fulfils the
required file pattern. Returns a list of globs that were
not matched. Returns an empty list if all requirements
were met.
"""
missing = []
for glob_pattern in glob_patterns:
found = False
for a in self.__iter__():
if fnmatch(a.filename, glob_pattern):
found = True
break
if not found:
missing.append(glob_pattern)
return missing
# Filters
def filter_owned_by_person(attachment, persons):
""" File owned by specific person(s) (e.g. original bug reporter) """
return bool(attachment.owner and
attachment.owner in persons)
def filter_filename_matches_globs(attachment, glob_patterns):
""" Filename matches one of a set of glob patterns (e.g. Xorg.*.log) """
filename = attachment.title
for glob_pattern in glob_patterns:
if fnmatch(filename, glob_pattern):
return False
return True
def filter_size_between(attachment, sizes):
""" File size is within [min, max] bounds """
assert(len(sizes) == 2)
min_size = sizes[0]
max_size = sizes[1]
return bool(min_size <= len(attachment) and len(attachment) <= max_size)
def filter_age_between(attachment, ages_in_days):
""" File was attached to bug between [min, max] days """
assert(len(ages_in_days) == 2)
min_age = ages_in_days[0]
max_age = ages_in_days[1]
return bool(min_age <= attachment.age and attachment.age <= max_age)
def filter_is_patch(attachment, is_patch):
return attachment.is_patch() == is_patch
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