code.delx.au - transcoding/blob - batchrun.py

   1 #!/usr/bin/env python
   2
   3 import optparse, shlex, subprocess, sys, itertools
   4
   5 def parseArgs():
   6         parser = optparse.OptionParser(usage="%prog batchfile1 [batchfile2] ...")
   7         opts, args = parser.parse_args(sys.argv[1:])
   8         return args
   9
  10 def run(args):
  11         subprocess.Popen(args).wait()
  12
  13 def getblocks(fd):
  14         def _countIndentationLevel(s):
  15                 level = 0
  16                 for ch in s:
  17                         if ch == "\t":
  18                                 level += 1
  19                         else:
  20                                 break
  21                 return level
  22
  23         for line in fd:
  24                 level = _countIndentationLevel(line)
  25                 line = line[level:] # Slice off the indentation
  26                 yield level, line
  27
  28 def batchProcess(fd):
  29         opts = []
  30
  31         for level, line in getblocks(fd):
  32                 oldLevel = len(opts) - 1
  33                 if level <= oldLevel:
  34                         run(itertools.chain(*opts))
  35
  36                 opts = opts[:level] # Delete all options that belong to groups that are indented more than this one
  37                 assert len(opts) == level, 'Seems we missed some options somewhere'
  38
  39                 opts.append(shlex.split(line))
  40
  41         if len(opts) > 0:
  42                 run(itertools.chain(*opts))
  43
  44
  45 def main():
  46         args = parseArgs()
  47         for name in args:
  48                 batchProcess(open(name))
  49
  50 if __name__ == "__main__":
  51         main()
  52