INNER CODE UNIT · Python

makepipeline

theyosh/TerrariumPI · contrib/pipes/__init__.py:189

def makepipeline(infile, steps, outfile):
    # Build a list with for each command:
    # [input filename or '', command string, kind, output filename or '']

    list = []
    for cmd, kind in steps:
        list.append(["", cmd, kind, ""])
    #
    # Make sure there is at least one step
    #
    if not list:
        list.append(["", "cat", "--", ""])
    #
    # Take care of the input and output ends
    #
    [cmd, kind] = list[0][1:3]
    if kind[0] == "f" and not infile:
        list.insert(0, ["", "cat", "--", ""])

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