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