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#!/usr/bin/env python
"""
# OpenWRT download directory cleanup utility.
# Delete all but the very last version of the program tarballs.
#
# Copyright (c) 2010 Michael Buesch <mb@bu3sch.de>
"""
import sys
import os
import re
DEBUG = 0
def parseVer_1234(match):
progname = match.group(1)
progversion = (int(match.group(2)) << 64) |\
(int(match.group(3)) << 48) |\
(int(match.group(4)) << 32) |\
(int(match.group(5)) << 16)
return (progname, progversion)
def parseVer_123(match):
progname = match.group(1)
patchlevel = match.group(5)
if patchlevel:
patchlevel = ord(patchlevel[0])
else:
patchlevel = 0
progversion = (int(match.group(2)) << 64) |\
(int(match.group(3)) << 48) |\
(int(match.group(4)) << 32) |\
patchlevel
return (progname, progversion)
def parseVer_12(match):
progname = match.group(1)
patchlevel = match.group(4)
if patchlevel:
patchlevel = ord(patchlevel[0])
else:
patchlevel = 0
progversion = (int(match.group(2)) << 64) |\
(int(match.group(3)) << 48) |\
patchlevel
return (progname, progversion)
def parseVer_r(match):
progname = match.group(1)
progversion = (int(match.group(2)) << 64)
return (progname, progversion)
def parseVer_ymd(match):
progname = match.group(1)
progversion = (int(match.group(2)) << 64) |\
(int(match.group(3)) << 48) |\
(int(match.group(4)) << 32)
return (progname, progversion)
extensions = (
".tar.gz",
".tar.bz2",
".orig.tar.gz",
".orig.tar.bz2",
".zip",
".tgz",
".tbz",
)
versionRegex = (
(re.compile(r"(.+)[-_](\d+)\.(\d+)\.(\d+)\.(\d+)"), parseVer_1234), # xxx-1.2.3.4
(re.compile(r"(.+)[-_](\d\d\d\d)-?(\d\d)-?(\d\d)"), parseVer_ymd), # xxx-YYYY-MM-DD
(re.compile(r"(.+)[-_](\d+)\.(\d+)\.(\d+)(\w?)"), parseVer_123), # xxx-1.2.3a
(re.compile(r"(.+)[-_](\d+)\.(\d+)(\w?)"), parseVer_12), # xxx-1.2a
(re.compile(r"(.+)[-_]r?(\d+)"), parseVer_r), # xxx-r1111
)
blacklist = (
re.compile(r"wl_apsta.*"),
re.compile(r"boost.*"),
re.compile(r".*\.fw"),
re.compile(r".*\.arm"),
re.compile(r".*\.bin"),
re.compile(r"RT\d+_Firmware.*"),
)
class EntryParseError(Exception): pass
class Entry:
def __init__(self, directory, filename):
self.directory = directory
self.filename = filename
self.progname = ""
for ext in extensions:
if filename.endswith(ext):
filename = filename[0:0-len(ext)]
break
else:
if DEBUG:
print "Extension did not match on", filename
raise EntryParseError("ext")
for (regex, parseVersion) in versionRegex:
match = regex.match(filename)
if match:
(self.progname, self.version) = parseVersion(match)
break
else:
if DEBUG:
print "Version regex did not match on", filename
raise EntryParseError("ver")
def deleteFile(self):
path = (self.directory + "/" + self.filename).replace("//", "/")
print "Deleting", path
if not DEBUG:
os.unlink(path)
def __eq__(self, y):
return self.filename == y.filename
def __ge__(self, y):
return self.version >= y.version
def usage():
print "OpenWRT download directory cleanup utility"
print "Usage: " + sys.argv[0] + " path/to/dl"
def main(argv):
if len(argv) != 2:
usage()
return 1
directory = argv[1]
# Create a directory listing and parse the file names.
entries = []
for filename in os.listdir(directory):
if filename == "." or filename == "..":
continue
for black in blacklist:
if black.match(filename):
if DEBUG:
print filename, "is blacklisted"
break
else:
try:
entries.append(Entry(directory, filename))
except (EntryParseError), e: pass
# Create a map of programs
progmap = {}
for entry in entries:
if entry.progname in progmap.keys():
progmap[entry.progname].append(entry)
else:
progmap[entry.progname] = [entry,]
# Traverse the program map and delete everything but the last version
for prog in progmap:
lastVersion = None
versions = progmap[prog]
for version in versions:
if lastVersion is None or version >= lastVersion:
lastVersion = version
if lastVersion:
for version in versions:
if version != lastVersion:
version.deleteFile()
if DEBUG:
print "Keeping", lastVersion.filename
return 0
if __name__ == "__main__":
sys.exit(main(sys.argv))
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