Dealing with fragmented getopt parameters

From: Jem Berkes (jem_at_users.pc9__org)
Date: 10/30/03

  • Next message: David Schwartz: "Re: send problems linux" 
    Date: 30 Oct 2003 00:22:00 GMT

    I have a C program that uses getopt. I added an -o switch that takes a
    parameter, and it works as expected when invoked from a shell:
                myprogram -g -o "sendmail -f sender recipient"
    That is, after parsing, optarg refers to everything within quotes

    I want to make it possible to call my program from postfix's pipe command.
    That documentation states that the command to execute has no shell-style
    interpretation. Sure enough, when I invoke postfix pipe's
                argv=myprogram -g -o "sendmail -f $(sender) $(recipient)"
    I saw experimentally that postfix delimits on spaces, quotes remain:
            -g
            -o
            "sendmail
            -f
            $(sender)
            $(recipient)"

    How can I work around this? One idea I had was to, after getopt iteration,
    check to see if optarg starts with a quote. This would imply that whatever
    invoked the command did not group things between "" as a single parameter.
    So then I can simply merge all subsequent argv[n]'s together, separating
    them by spaces.

    Does this seem like a good idea? Note that if the shell does properly group
    things within "" then the opening quote will not appear within optarg, and
    no special processing is required. 

    -- 
Jem Berkes
http://www.sysdesign.ca/
  • Next message: David Schwartz: "Re: send problems linux"

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