sort-pkgs

   1 #!/usr/bin/python3
   2
   3 """
   4 This script tries to set ordering in which packages ought to be sent to builders.
   5 Input: file with names of packages (without the .spec suffix). One package name per line.
   6 Output: sorted packages on stdout.
   7
   8 If the script goes in a infinite loop, that means there is a cycle or other bug.
   9 """
  10
  11 import os
  12 import re
  13 import sys
  14
  15 BR_PATTERN = re.compile('BuildRequires:\s+(.*?)(\s|$)')
  16 PACKAGE_PATTERN_WITH_N = re.compile('%package\s+-n\s+(.*)')
  17 PACKAGE_PATTERN = re.compile('%package\s+(.*)')
  18
  19 DIR = os.getenv("HOME") + '/rpm/packages'
  20
  21 BUILD_REQUIRES = {}
  22 PACKAGES = {}
  23 SPECS = {}
  24 VISITED = {}
  25
  26
  27 def parse_spec(name):
  28     global PACKAGES, SPECS, BUILD_REQUIRES, VISITED
  29     res = []
  30     try:
  31         with open(os.path.join(DIR, name, name + '.spec'), 'r') as f:
  32             for line in f:
  33                 br = BR_PATTERN.match(line)
  34                 if br:
  35                     p = br.group(1)
  36                     res.append(p)
  37                 if line.startswith('%package'):
  38                     pn = PACKAGE_PATTERN_WITH_N.match(line)
  39                     if pn:
  40                         package = pn.group(1)
  41                         PACKAGES[package] = name
  42                     else:
  43                         pn = PACKAGE_PATTERN.match(line)
  44                         if pn:
  45                             ext = pn.group(1)
  46                             if ext:
  47                                 package = name + '-' + ext
  48                                 PACKAGES[package] = name
  49         BUILD_REQUIRES[name] = res[:]
  50         PACKAGES[name] = name
  51         SPECS[name] = True
  52         VISITED[name] = False
  53     except:
  54         pass
  55
  56
  57 def print_spec(spec):
  58     global PACKAGES, SPECS, BUILD_REQUIRES, VISITED
  59
  60     if not VISITED[spec]:
  61         VISITED[spec] = True
  62         for br in BUILD_REQUIRES[spec]:
  63             name = PACKAGES.get(br, '')
  64             if name in SPECS:
  65                 if not VISITED[name]:
  66                     print_spec(name)
  67         print(spec)
  68
  69
  70 if __name__ == "__main__":
  71     if len(sys.argv) < 2:
  72         print("Usage: %s filename" % sys.argv[0])
  73         sys.exit(1)
  74     with open(sys.argv[1], 'r') as f:
  75         for line in f:
  76             spec = line.rstrip()
  77             parse_spec(spec)
  78
  79     for spec in SPECS:
  80         print_spec(spec)