diff src/pkg.pl @ 2:a75581c89dde

validation and help message.
author Robert McIntyre <rlm@mit.edu>
date Tue, 08 Jan 2013 12:48:59 +0000
parents 0b7a589f6e9a
children 9ff0fcf34920
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line diff
     1.1 --- a/src/pkg.pl	Tue Jan 08 11:45:01 2013 +0000
     1.2 +++ b/src/pkg.pl	Tue Jan 08 12:48:59 2013 +0000
     1.3 @@ -0,0 +1,52 @@
     1.4 +#!/usr/bin/env perl
     1.5 +
     1.6 +if ($ARGV[0] eq "--help"){
     1.7 +  print <<"HERE";
     1.8 +
     1.9 +pkg -- create a package user.
    1.10 +
    1.11 +syntax:
    1.12 +  pkg package-name description
    1.13 +  pkg --help 
    1.14 +
    1.15 +Create a package user for the purpose of compiling
    1.16 +a particular package.
    1.17 +
    1.18 +The user will be created with user and group both
    1.19 +equal to the name you specify.
    1.20 +
    1.21 +You will then be put into the user's home
    1.22 +directory where you may proceed with
    1.23 +compiling/installation of the package.
    1.24 +
    1.25 +If the user already exists, this is equivalent to 
    1.26 +  su package-name; cd ~; 
    1.27 +
    1.28 +Written by Robert McIntyre. This software is free
    1.29 +software and is released to the public domain.
    1.30 +  
    1.31 +HERE
    1.32 +exit 0;
    1.33 +}
    1.34 +
    1.35 +
    1.36 +$pkg_name = $ARGV[0];
    1.37 +
    1.38 +$pkg_desc = $ARGV[1];
    1.39 +
    1.40 +# Validate pkg_user as a user name.
    1.41 +if (!($pkg_name =~ m/^[A-Za-z][A-Za-z0-9_-]*$/)){
    1.42 +  print "$pkg_name is not a valid user name!\n";
    1.43 +  exit 0;
    1.44 +}
    1.45 +
    1.46 +# Validate description.
    1.47 +if ($pkg_desc =~ m/:/){
    1.48 +  print "Package Description cannot contain \":\"\n";
    1.49 +  exit 0
    1.50 +}
    1.51 +
    1.52 +
    1.53 +print "name: $pkg_name\ndesc: $pkg_desc\n";
    1.54 +
    1.55 +