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 | |