support/json-rsync-version

   1 #!/usr/bin/python3
   2
   3 import sys, argparse, subprocess, json
   4
   5 def main():
   6     if not args.rsync or args.rsync == '-':
   7         ver_out = sys.stdin.read().strip()
   8     else:
   9         ver_out = subprocess.check_output([args.rsync, '--version', '--version'], encoding='utf-8').strip()
  10     if ver_out.startswith('{'):
  11         print(ver_out)
  12         return
  13     info = { }
  14     for line in ver_out.splitlines():
  15         if line.startswith('rsync '):
  16             prog, vstr, ver, pstr, vstr2, proto = line.split()
  17             info['program'] = prog
  18             if ver.startswith('v'):
  19                 ver = ver[1:]
  20             info[vstr] = ver
  21             if '.' not in proto:
  22                 proto += '.0'
  23             else:
  24                 proto = proto.replace('.PR', '.')
  25             info[pstr] = proto
  26         elif line.startswith('Copyright '):
  27             info['copyright'] = line[10:]
  28         elif line.startswith('Web site: '):
  29             info['url'] = line[10:]
  30         elif line.startswith('  '):
  31             if not saw_comma and ',' in line:
  32                 saw_comma = True
  33                 info[sect_name] = { }
  34             if saw_comma:
  35                 for x in line.strip(' ,').split(', '):
  36                     if ' ' in x:
  37                         val, var = x.split(' ', 1)
  38                         if val == 'no':
  39                             val = False
  40                         elif val.endswith('-bit'):
  41                             var = var[:-1] + '_bits'
  42                             val = int(val.split('-')[0])
  43                         if var == 'protect-args':
  44                             var = 'secluded-args'
  45                     else:
  46                         var = x
  47                         val = True
  48                     var = var.replace(' ', '_').replace('-', '_')
  49                     info[sect_name][var] = val
  50             else:
  51                 info[sect_name] += [ x for x in line.split() if not x.startswith('(') ]
  52         elif line == '':
  53             break
  54         else:
  55             sect_name = line.strip(' :').replace(' ', '_').lower()
  56             info[sect_name] = [ ]
  57             saw_comma = False
  58     for chk in 'capabilities optimizations'.split():
  59         if chk not in info:
  60             info[chk] = { }
  61     for chk in 'checksum_list compress_list daemon_auth_list'.split():
  62         if chk not in info:
  63             info[chk] = [ ]
  64     info['license'] = 'GPL3'
  65     info['caveat'] = 'rsync comes with ABSOLUTELY NO WARRANTY'
  66     print(json.dumps(info))
  67
  68
  69 if __name__ == '__main__':
  70     parser = argparse.ArgumentParser(description="Output rsync's version data in JSON format, even if the rsync doesn't support a native json-output method.", add_help=False)
  71     parser.add_argument('rsync', nargs='?', help="Specify an rsync command to run. Otherwise stdin is consumed.")
  72     parser.add_argument("--help", "-h", action="help", help="Output this help message and exit.")
  73     args = parser.parse_args()
  74     main()
  75
  76 # vim: sw=4 et