dl_cleanup: Add dry-run option

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19081 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/scripts/dl_cleanup.py b/scripts/dl_cleanup.py
index e83c82a..41f172d 100755 (executable)
--- a/scripts/dl_cleanup.py
+++ b/scripts/dl_cleanup.py
@@ -9,9 +9,13 @@
 import sys
 import os
 import re
+import getopt
 
 DEBUG = 0
 
+# Commandline options
+opt_dryrun = False
+
 
 def parseVer_1234(match):
        progname = match.group(1)
@@ -114,7 +118,7 @@ class Entry:
        def deleteFile(self):
                path = (self.directory + "/" + self.filename).replace("//", "/")
                print "Deleting", path
-               if not DEBUG:
+               if not opt_dryrun:
                        os.unlink(path)
 
        def __eq__(self, y):
@@ -125,13 +129,29 @@ class Entry:
 
 def usage():
        print "OpenWRT download directory cleanup utility"
-       print "Usage: " + sys.argv[0] + " path/to/dl"
+       print "Usage: " + sys.argv[0] + " [OPTIONS] <path/to/dl>"
+       print ""
+       print " -d|--dry-run            Do a dry-run. Don't delete any files"
 
 def main(argv):
-       if len(argv) != 2:
+       global opt_dryrun
+
+       try:
+               (opts, args) = getopt.getopt(argv[1:],
+                       "hd",
+                       [ "help", "dry-run", ])
+               if len(args) != 1:
+                       raise getopt.GetoptError()
+       except getopt.GetoptError:
                usage()
                return 1
-       directory = argv[1]
+       directory = args[0]
+       for (o, v) in opts:
+               if o in ("-h", "--help"):
+                       usage()
+                       return 0
+               if o in ("-d", "--dry-run"):
+                       opt_dryrun = True
 
        # Create a directory listing and parse the file names.
        entries = []
@@ -140,7 +160,7 @@ def main(argv):
                        continue
                for black in blacklist:
                        if black.match(filename):
-                               if DEBUG:
+                               if opt_dryrun:
                                        print filename, "is blacklisted"
                                break
                else:
@@ -167,7 +187,7 @@ def main(argv):
                        for version in versions:
                                if version != lastVersion:
                                        version.deleteFile()
-                       if DEBUG:
+                       if opt_dryrun:
                                print "Keeping", lastVersion.filename
 
        return 0