dl_cleanup: Port to Python 3

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@47156 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/scripts/dl_cleanup.py b/scripts/dl_cleanup.py
index c2bbbc2..8f6bd20 100755 (executable)
--- a/scripts/dl_cleanup.py
+++ b/scripts/dl_cleanup.py
@@ -1,12 +1,14 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 """
 # OpenWrt download directory cleanup utility.
 # Delete all but the very last version of the program tarballs.
 #
-# Copyright (C) 2010 Michael Buesch <mb@bu3sch.de>
-# Copyright (C) 2013 OpenWrt.org
+# Copyright (C) 2010-2015 Michael Buesch <m@bues.ch>
+# Copyright (C) 2013-2015 OpenWrt.org
 """
 
+from __future__ import print_function
+
 import sys
 import os
 import re
@@ -28,7 +30,7 @@ def parseVer_123(match, filepath):
        progname = match.group(1)
        try:
                patchlevel = match.group(5)
-       except (IndexError), e:
+       except IndexError as e:
                patchlevel = None
        if patchlevel:
                patchlevel = ord(patchlevel[0])
@@ -44,7 +46,7 @@ def parseVer_12(match, filepath):
        progname = match.group(1)
        try:
                patchlevel = match.group(4)
-       except (IndexError), e:
+       except IndexError as e:
                patchlevel = None
        if patchlevel:
                patchlevel = ord(patchlevel[0])
@@ -121,7 +123,7 @@ class Entry:
                                self.fileext = ext
                                break
                else:
-                       print self.filename, "has an unknown file-extension"
+                       print(self.filename, "has an unknown file-extension")
                        raise EntryParseError("ext")
                for (regex, parseVersion) in versionRegex:
                        match = regex.match(filename)
@@ -130,28 +132,28 @@ class Entry:
                                        match, directory + "/" + filename + self.fileext)
                                break
                else:
-                       print self.filename, "has an unknown version pattern"
+                       print(self.filename, "has an unknown version pattern")
                        raise EntryParseError("ver")
 
+       def getPath(self):
+               return (self.directory + "/" + self.filename).replace("//", "/")
+
        def deleteFile(self):
-               path = (self.directory + "/" + self.filename).replace("//", "/")
-               print "Deleting", path
+               path = self.getPath()
+               print("Deleting", path)
                if not opt_dryrun:
                        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] + " [OPTIONS] <path/to/dl>"
-       print ""
-       print " -d|--dry-run            Do a dry-run. Don't delete any files"
-       print " -B|--show-blacklist     Show the blacklist and exit"
-       print " -w|--whitelist ITEM     Remove ITEM from blacklist"
+       print("OpenWrt download directory cleanup utility")
+       print("Usage: " + sys.argv[0] + " [OPTIONS] <path/to/dl>")
+       print("")
+       print(" -d|--dry-run            Do a dry-run. Don't delete any files")
+       print(" -B|--show-blacklist     Show the blacklist and exit")
+       print(" -w|--whitelist ITEM     Remove ITEM from blacklist")
 
 def main(argv):
        global opt_dryrun
@@ -163,7 +165,7 @@ def main(argv):
                if len(args) != 1:
                        usage()
                        return 1
-       except getopt.GetoptError:
+       except getopt.GetoptError as e:
                usage()
                return 1
        directory = args[0]
@@ -180,12 +182,12 @@ def main(argv):
                                        del blacklist[i]
                                        break
                        else:
-                               print "Whitelist error: Item", v,\
-                                     "is not in blacklist"
+                               print("Whitelist error: Item", v,\
+                                     "is not in blacklist")
                                return 1
                if o in ("-B", "--show-blacklist"):
                        for (name, regex) in blacklist:
-                               print name
+                               print(name)
                        return 0
 
        # Create a directory listing and parse the file names.
@@ -196,12 +198,13 @@ def main(argv):
                for (name, regex) in blacklist:
                        if regex.match(filename):
                                if opt_dryrun:
-                                       print filename, "is blacklisted"
+                                       print(filename, "is blacklisted")
                                break
                else:
                        try:
                                entries.append(Entry(directory, filename))
-                       except (EntryParseError), e: pass
+                       except EntryParseError as e:
+                               pass
 
        # Create a map of programs
        progmap = {}
@@ -220,10 +223,10 @@ def main(argv):
                                lastVersion = version
                if lastVersion:
                        for version in versions:
-                               if version != lastVersion:
+                               if version is not lastVersion:
                                        version.deleteFile()
                        if opt_dryrun:
-                               print "Keeping", lastVersion.filename
+                               print("Keeping", lastVersion.getPath())
 
        return 0