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                 if not line.strip():
  25                         continue # Ignore blank lines
  26                 level = _countIndentationLevel(line)
  27                 line = line[level:] # Slice off the indentation
  28                 yield level, line
  29
  30 def batchProcess(fd):
  31         opts = []
  32
  33         for level, line in getblocks(fd):
  34                 oldLevel = len(opts) - 1
  35                 if level <= oldLevel:
  36                         run(itertools.chain(*opts))
  37
  38                 opts = opts[:level] # Delete all options that belong to groups that are indented more than this one
  39                 assert len(opts) == level, 'Seems we missed some options somewhere'
  40
  41                 opts.append(shlex.split(line))
  42
  43         if len(opts) > 0:
  44                 run(itertools.chain(*opts))
  45
  46
  47 def main():
  48         args = parseArgs()
  49         for name in args:
  50                 batchProcess(open(name))
  51
  52 if __name__ == "__main__":
  53         main()
  54