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##
## slice_setup.pl -- Command line parsing and CFG setup
## Copyright (c) 1997-2002 Ralf S. Engelschall.
## Copyright (c) 1999-2002 Denis Barbier.
##
package main;
sub usage {
print STDERR "Usage: slice [options] [file]\n";
print STDERR "\n";
print STDERR "Options:\n";
print STDERR " -o, --outputfile=FILESPEC create output file(s)\n";
print STDERR " -y, --output-policy=STRING set default output policy\n";
print STDERR " -v, --verbose enable verbose mode\n";
print STDERR " -V, --version display version string\n";
print STDERR " -h, --help display usage page\n";
print STDERR "\n";
print STDERR "FILESPEC format:\n";
print STDERR "\n";
print STDERR " [SLICETERM:]PATH[\@CHMODOPT]\n";
print STDERR "\n";
print STDERR " SLICETERM ..... a set-theory term describing the slices\n";
print STDERR " PATH .......... a filesystem path to the outputfile\n";
print STDERR " CHMODOPT ...... permission change options for 'chmod'\n";
print STDERR "\n";
exit(1);
}
sub hello {
print STDERR "$slice_version->{v_tex}\n";
print STDERR <<'EOT';
Copyright (c) 1997-2002 Ralf S. Engelschall.
Copyright (c) 1999-2002 Denis Barbier.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
EOT
exit(0);
}
sub setup {
my ($CFG) = @_;
# parse command line options
$opt_h = 0;
$opt_V = 0;
$opt_v = 0;
$opt_y = '';
@opt_o = ();
my (@options_list) = (
"v|verbose",
"V|version",
"h|help",
"o|outputfile=s@",
"y|output-policy=s",
);
$SIG{'__WARN__'} = sub {
print STDERR "Slice:Error: $_[0]";
};
$Getopt::Long::bundling = 1;
$Getopt::Long::getopt_compat = 0;
if (not Getopt::Long::GetOptions(@options_list)) {
print STDERR "Try `$0 --help' for more information.\n";
exit(0);
}
$SIG{'__WARN__'} = undef;
usage($0) if ($opt_h);
hello() if ($opt_V);
# process command line arguments and
# read input file
if (($#ARGV == 0 and $ARGV[0] eq '-') or $#ARGV == -1) {
$fp = new IO::Handle;
$fp->fdopen(fileno(STDIN), "r")
|| error("Unable to load STDIN: $!\n");
local ($/) = undef;
$INPUT = <$fp>;
$fp->close()
|| error("Unable to close STDIN: $!\n");
}
elsif ($#ARGV == 0) {
$fp = new IO::File;
$fp->open($ARGV[0])
|| error("Unable to load $ARGV[0]: $!\n");
local ($/) = undef;
$INPUT = <$fp>;
$fp->close()
|| error("Unable to close $ARGV[0]: $!\n");
}
else {
usage();
}
# add additional options
$INPUT =~ s|^%!slice\s+(.*?)\n|push(@ARGV, split(' ', $1)), ''|egim;
if (not Getopt::Long::GetOptions(@options_list)) {
usage();
}
if ($#opt_o == -1) {
@opt_o = ( "ALL:-" ); # default is all on stdout
}
# setup the $CFG hash
$CFG->{INPUT} = {};
$CFG->{INPUT}->{SRC} = $INPUT; # original source
$CFG->{INPUT}->{PLAIN} = ''; # source without slice delimiters
$CFG->{OPT} = {};
$CFG->{OPT}->{X} = $opt_v; # option -v
$CFG->{OPT}->{O} = [ @opt_o ]; # options -o
$CFG->{OPT}->{Y} = {
'u' => 0, 'w' => 0,
'z' => 0, 's' => 0,
};
$modifier = $opt_y;
foreach (qw(u w z s)) {
($modifier =~ m/$_(\d+)/) and $CFG->{OPT}->{Y}->{$_} = $1;
}
$CFG->{SLICE} = {};
$CFG->{SLICE}->{SET} = {};
$CFG->{SLICE}->{SET}->{ASC} = {}; # slice set, represented in ASCII
$CFG->{SLICE}->{SET}->{OBJ} = {}; # slice set, represented as Bit::Vector object
$CFG->{SLICE}->{MINLEVELS} = {}; # slice min levels
$CFG->{SLICE}->{MAXLEVEL} = 0; # maximum slice level
}
1;
##EOF##
|
