#!/usr/bin/python

import os
import re
import sys
import glob
from string import strip
from time import gmtime, strftime

rpmlint_path = "/usr/share/rpmlint"
rpmlint_conf = os.path.join(rpmlint_path, "config")
sys.path.append(rpmlint_path)

import Config
execfile(rpmlint_conf)
valid_licenses = Config.getOption("ValidLicenses")

specs = sorted(glob.glob("devel/*/*.spec"))
total = len(specs)
bogus = {}
regex = '\s(?:and|or)\s|[()]'

verbose = False
if len(sys.argv[1:]) > 0:
    if sys.argv[1] in ['-v', '--verbose']:
        verbose = True

for spec in specs:
    licenses = [re.sub("License:\s*", "", l).strip("\n")
                for l in open(spec).readlines() if l.startswith("License:")]
    for license in licenses:
        if license not in valid_licenses:
            bogus[spec] = [l for l in map(strip, re.split(regex, license))
                           if l != '' and l not in valid_licenses]
            if verbose:
                invalid = ' '.join(['"%s"' % b for b in bogus[spec]])
                print '%s: %s' % (spec, invalid)

percent = (len(bogus) / float(total)) * 100

if verbose:
    print '\nSummary:',
print '%.2f%% of spec files (%d out of %d) have invalid licenses' % (percent,
                                                                     len(bogus),
                                                                     total),
print '(as of %s)' % strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())