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| Current File : //bin/ppmquant |
#!/usr/bin/sh
##############################################################################
# This is essentially a Perl program. We exec the Perl interpreter specifying
# this same file as the Perl program and use the -x option to cause the Perl
# interpreter to skip down to the Perl code. The reason we do this instead of
# just making /usr/bin/perl the script interpreter (instead of /bin/sh) is
# that the user may have multiple Perl interpreters and the one he wants to
# use is properly located in the PATH. The user's choice of Perl interpreter
# may be crucial, such as when the user also has a PERL5LIB environment
# variable and it selects modules that work with only a certain main
# interpreter program.
#
# An alternative some people use is to have /usr/bin/env as the script
# interpreter. We don't do that because we think the existence and
# compatibility of /bin/sh is more reliable.
#
# Note that we aren't concerned about efficiency because the user who needs
# high efficiency can use directly the programs that this program invokes.
#
##############################################################################
exec perl -w -x -S -- "$0" "$@"
#!/usr/bin/perl
##############################################################################
# This is nothing but a compatibility interface for Pnmquant.
# An old program coded to call Ppmquant will continue working because
# this interface exists. All new (or newly modified) programs should
# call Pnmquant or Pnmremap instead.
#
# In days past, Pnmquant and Pnmremap did not exist. Ppmquant did
# the job of both Pnmremap and Pnmquant, but only on PPM images.
##############################################################################
use strict;
sub doVersionHack($) {
my ($argvR) = @_;
my $arg1 = $argvR->[0];
if (defined($arg1) && (($arg1 eq "--version") || ($arg1 eq "-version"))) {
my $termStatus = system('pnmquant', '--version');
exit($termStatus == 0 ? 0 : 1);
}
}
doVersionHack(\@ARGV);
use Getopt::Long;
my @ppmquantArgv = @ARGV;
Getopt::Long::Configure('pass_through');
my $validOptions = GetOptions('mapfile' => \my $mapfileopt);
my $mapfileOptionPresent = ($validOptions && $mapfileopt);
if ($mapfileOptionPresent) {
system('pnmremap', @ppmquantArgv);
} else {
system('pnmquant', @ppmquantArgv);
}