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import sys
from portage.manifest import guessManifestFileType
from portage.versions import pkgsplit, vercmp, _pkg_str
if sys.hexversion < 0x3000000:
_filename_base = unicode
else:
_filename_base = str
class _special_filename(_filename_base):
"""
Helps to sort file names by file type and other criteria.
"""
def __new__(cls, status_change, file_name):
return _filename_base.__new__(cls, status_change + file_name)
def __init__(self, status_change, file_name):
_filename_base.__init__(status_change + file_name)
self.status_change = status_change
self.file_name = file_name
self.file_type = guessManifestFileType(file_name)
@staticmethod
def file_type_lt(a, b):
"""
Defines an ordering between file types.
"""
first = a.file_type
second = b.file_type
if first == second:
return False
if first == "EBUILD":
return True
elif first == "MISC":
return second in ("EBUILD",)
elif first == "AUX":
return second in ("EBUILD", "MISC")
elif first == "DIST":
return second in ("EBUILD", "MISC", "AUX")
elif first is None:
return False
else:
raise ValueError("Unknown file type '%s'" % first)
def __lt__(self, other):
"""
Compare different file names, first by file type and then
for ebuilds by version and lexicographically for others.
EBUILD < MISC < AUX < DIST < None
"""
if self.__class__ != other.__class__:
raise NotImplementedError
# Sort by file type as defined by file_type_lt().
if self.file_type_lt(self, other):
return True
elif self.file_type_lt(other, self):
return False
# Files have the same type.
if self.file_type == "EBUILD":
# Sort by version. Lowest first.
ver = "-".join(pkgsplit(self.file_name[:-7])[1:3])
other_ver = "-".join(pkgsplit(other.file_name[:-7])[1:3])
return vercmp(ver, other_ver) < 0
else:
# Sort lexicographically.
return self.file_name < other.file_name
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