1#!/usr/bin/env python 2""" 3# OpenWRT download directory cleanup utility. 4# Delete all but the very last version of the program tarballs. 5# 6# Copyright (c) 2010 Michael Buesch <mb@bu3sch.de> 7""" 8 9import sys 10import os 11import re 12import getopt 13 14# Commandline options 15opt_dryrun = False 16 17 18def parseVer_1234(match, filepath): 19 progname = match.group(1) 20 progversion = (int(match.group(2)) << 64) |\ 21 (int(match.group(3)) << 48) |\ 22 (int(match.group(4)) << 32) |\ 23 (int(match.group(5)) << 16) 24 return (progname, progversion) 25 26def parseVer_123(match, filepath): 27 progname = match.group(1) 28 try: 29 patchlevel = match.group(5) 30 except (IndexError), e: 31 patchlevel = None 32 if patchlevel: 33 patchlevel = ord(patchlevel[0]) 34 else: 35 patchlevel = 0 36 progversion = (int(match.group(2)) << 64) |\ 37 (int(match.group(3)) << 48) |\ 38 (int(match.group(4)) << 32) |\ 39 patchlevel 40 return (progname, progversion) 41 42def parseVer_12(match, filepath): 43 progname = match.group(1) 44 try: 45 patchlevel = match.group(4) 46 except (IndexError), e: 47 patchlevel = None 48 if patchlevel: 49 patchlevel = ord(patchlevel[0]) 50 else: 51 patchlevel = 0 52 progversion = (int(match.group(2)) << 64) |\ 53 (int(match.group(3)) << 48) |\ 54 patchlevel 55 return (progname, progversion) 56 57def parseVer_r(match, filepath): 58 progname = match.group(1) 59 progversion = (int(match.group(2)) << 64) 60 return (progname, progversion) 61 62def parseVer_ymd(match, filepath): 63 progname = match.group(1) 64 progversion = (int(match.group(2)) << 64) |\ 65 (int(match.group(3)) << 48) |\ 66 (int(match.group(4)) << 32) 67 return (progname, progversion) 68 69def parseVer_GIT(match, filepath): 70 progname = match.group(1) 71 st = os.stat(filepath) 72 progversion = int(st.st_mtime) << 64 73 return (progname, progversion) 74 75extensions = ( 76 ".tar.gz", 77 ".tar.bz2", 78 ".orig.tar.gz", 79 ".orig.tar.bz2", 80 ".zip", 81 ".tgz", 82 ".tbz", 83) 84 85versionRegex = ( 86 (re.compile(r"(.+)[-_]([0-9a-fA-F]{40,40})"), parseVer_GIT), # xxx-GIT_SHASUM 87 (re.compile(r"(.+)[-_](\d+)\.(\d+)\.(\d+)\.(\d+)"), parseVer_1234), # xxx-1.2.3.4 88 (re.compile(r"(.+)[-_](\d\d\d\d)-?(\d\d)-?(\d\d)"), parseVer_ymd), # xxx-YYYY-MM-DD 89 (re.compile(r"(.+)[-_](\d+)\.(\d+)\.(\d+)(\w?)"), parseVer_123), # xxx-1.2.3a 90 (re.compile(r"(.+)[-_](\d+)_(\d+)_(\d+)"), parseVer_123), # xxx-1_2_3 91 (re.compile(r"(.+)[-_](\d+)\.(\d+)(\w?)"), parseVer_12), # xxx-1.2a 92 (re.compile(r"(.+)[-_]r?(\d+)"), parseVer_r), # xxx-r1111 93) 94 95blacklist = [ 96 ("linux", re.compile(r"linux-.*")), 97 ("gcc", re.compile(r"gcc-.*")), 98 ("wl_apsta", re.compile(r"wl_apsta.*")), 99 (".fw", re.compile(r".*\.fw")), 100 (".arm", re.compile(r".*\.arm")), 101 (".bin", re.compile(r".*\.bin")), 102 ("rt-firmware", re.compile(r"RT[\d\w]+_Firmware.*")), 103] 104 105class EntryParseError(Exception): pass 106 107class Entry: 108 def __init__(self, directory, filename): 109 self.directory = directory 110 self.filename = filename 111 self.progname = "" 112 self.fileext = "" 113 114 for ext in extensions: 115 if filename.endswith(ext): 116 filename = filename[0:0-len(ext)] 117 self.fileext = ext 118 break 119 else: 120 print self.filename, "has an unknown file-extension" 121 raise EntryParseError("ext") 122 for (regex, parseVersion) in versionRegex: 123 match = regex.match(filename) 124 if match: 125 (self.progname, self.version) = parseVersion( 126 match, directory + "/" + filename + self.fileext) 127 break 128 else: 129 print self.filename, "has an unknown version pattern" 130 raise EntryParseError("ver") 131 132 def deleteFile(self): 133 path = (self.directory + "/" + self.filename).replace("//", "/") 134 print "Deleting", path 135 if not opt_dryrun: 136 os.unlink(path) 137 138 def __eq__(self, y): 139 return self.filename == y.filename 140 141 def __ge__(self, y): 142 return self.version >= y.version 143 144def usage(): 145 print "OpenWRT download directory cleanup utility" 146 print "Usage: " + sys.argv[0] + " [OPTIONS] <path/to/dl>" 147 print "" 148 print " -d|--dry-run Do a dry-run. Don't delete any files" 149 print " -B|--show-blacklist Show the blacklist and exit" 150 print " -w|--whitelist ITEM Remove ITEM from blacklist" 151 152def main(argv): 153 global opt_dryrun 154 155 try: 156 (opts, args) = getopt.getopt(argv[1:], 157 "hdBw:", 158 [ "help", "dry-run", "show-blacklist", "whitelist=", ]) 159 if len(args) != 1: 160 usage() 161 return 1 162 except getopt.GetoptError: 163 usage() 164 return 1 165 directory = args[0] 166 for (o, v) in opts: 167 if o in ("-h", "--help"): 168 usage() 169 return 0 170 if o in ("-d", "--dry-run"): 171 opt_dryrun = True 172 if o in ("-w", "--whitelist"): 173 for i in range(0, len(blacklist)): 174 (name, regex) = blacklist[i] 175 if name == v: 176 del blacklist[i] 177 break 178 else: 179 print "Whitelist error: Item", v,\ 180 "is not in blacklist" 181 return 1 182 if o in ("-B", "--show-blacklist"): 183 for (name, regex) in blacklist: 184 print name 185 return 0 186 187 # Create a directory listing and parse the file names. 188 entries = [] 189 for filename in os.listdir(directory): 190 if filename == "." or filename == "..": 191 continue 192 for (name, regex) in blacklist: 193 if regex.match(filename): 194 if opt_dryrun: 195 print filename, "is blacklisted" 196 break 197 else: 198 try: 199 entries.append(Entry(directory, filename)) 200 except (EntryParseError), e: pass 201 202 # Create a map of programs 203 progmap = {} 204 for entry in entries: 205 if entry.progname in progmap.keys(): 206 progmap[entry.progname].append(entry) 207 else: 208 progmap[entry.progname] = [entry,] 209 210 # Traverse the program map and delete everything but the last version 211 for prog in progmap: 212 lastVersion = None 213 versions = progmap[prog] 214 for version in versions: 215 if lastVersion is None or version >= lastVersion: 216 lastVersion = version 217 if lastVersion: 218 for version in versions: 219 if version != lastVersion: 220 version.deleteFile() 221 if opt_dryrun: 222 print "Keeping", lastVersion.filename 223 224 return 0 225 226if __name__ == "__main__": 227 sys.exit(main(sys.argv)) 228