source: trunk/essentials/dev-lang/perl/NetWare/config_sh.PL

# take a semicolon separated path list and turn it into a quoted
# list of paths that Text::Parsewords will grok
sub mungepath {
    my $p = shift;
    # remove leading/trailing semis/spaces
    $p =~ s/^[ ;]+//;
    $p =~ s/[ ;]+$//;
    $p =~ s/'/"/g;
    my @p = map { $_ = "\"$_\"" if /\s/ and !/^".*"$/; $_ } split /;/, $p;
    return join(' ', @p);
}

# generate an array of option strings from command-line args
# or an option file
#    -- added by BKS, 10-17-1999 to fix command-line overflow problems
sub loadopts {
    if ($ARGV[0] =~ /--cfgsh-option-file/) {
        shift @ARGV;
        my $optfile = shift @ARGV;
        local (*F);
        open OPTF, $optfile or die "Can't open $optfile: $!\n";
        my @opts;
        chomp(my $line = <OPTF>);
        my @vars = split(/\t+~\t+/, $line);
        for (@vars) {
            push(@opts, $_) unless (/^\s*$/);
        }
        close OPTF;
        return \@opts;
    }
    else {
        return \@ARGV;
    }
}

my %opt;
my $optref = loadopts();
while (@{$optref} && $optref->[0] =~ /^([\w_]+)=(.*)$/) {
    $opt{$1}=$2;
    shift(@{$optref});
}

my $pl_h = '../patchlevel.h';

if (-e $pl_h) {
    open PL, "<$pl_h" or die "Can't open $pl_h: $!";
    while (<PL>) {
        if (/^#\s*define\s+(PERL_\w+)\s+([\d.]+)/) {
            $opt{$1} = $2;
        }
    }
    close PL;
}
else {
    die "Can't find $pl_h: $!";
}
$opt{VERSION} = "$opt{PERL_REVISION}.$opt{PERL_VERSION}.$opt{PERL_SUBVERSION}";
$opt{INST_VER} =~ s|~VERSION~|$opt{VERSION}|g;

$opt{'cf_by'} = $ENV{USERNAME} unless $opt{'cf_by'};
$opt{'cf_email'} = $opt{'cf_by'} . '@' . (gethostbyname('localhost'))[0]
        unless $opt{'cf_email'};
$opt{'usemymalloc'} = 'y' if $opt{'d_mymalloc'} eq 'define';

$opt{libpth} = mungepath($opt{libpth}) if exists $opt{libpth};
$opt{incpath} = mungepath($opt{incpath}) if exists $opt{incpath};

while (<>) {
    s/~([\w_]+)~/$opt{$1}/g;
    if (/^([\w_]+)=(.*)$/) {
        my($k,$v) = ($1,$2);
        # this depends on cf_time being empty in the template (or we'll
        # get a loop)
        if ($k eq 'cf_time') {
            $_ = "$k='" . localtime(time) . "'\n" if $v =~ /^\s*'\s*'/;
        }
        elsif (exists $opt{$k}) {
            $_ = "$k='$opt{$k}'\n";
        }
    }
    print;
}