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| Current File : //proc/thread-self/root/bin/pgmcrater |
#!/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
# Pamcrater/Pamshadedrelief. An old program coded to call Pgmcrater will
# continue working because this interface exists. All new (or newly
# modified) programs should call Pamcrater and Pamshadedrelief instead.
#
# In days past, Pamcrater and Pamshadedrelief did not exist. Pgmcrater did
# both jobs together, with PGM output.
##############################################################################
use strict;
use Getopt::Long;
sub doVersionHack($) {
my ($argvR) = @_;
my $arg1 = $argvR->[0];
if (defined($arg1) && (($arg1 eq "--version") || ($arg1 eq "-version"))) {
my $termStatus = system('pamcrater', '--version');
exit($termStatus == 0 ? 0 : 1);
}
}
##############################################################################
#
# MAINLINE
#
##############################################################################
doVersionHack(\@ARGV);
my @pgmcraterArgv = @ARGV;
my $validOptions = GetOptions(
'number=i' => \my $numberOpt,
'height=i' => \my $heightOpt,
'ysize=i' => \my $ysizeOpt,
'width=i' => \my $widthOpt,
'xsize=i' => \my $xsizeOpt,
'gamma=i' => \my $gammaOpt,
'randomseed=i' => \my $randomseedOpt);
if (!$validOptions) {
print STDERR "Invalid syntax\n";
exit(100);
}
my $pamcraterArgs;
$pamcraterArgs = ''; # initial value
if (defined($numberOpt)) {
$pamcraterArgs .= "'-number=$numberOpt' ";
}
if (defined($heightOpt)) {
$pamcraterArgs .= "'-height=$heightOpt' ";
} elsif (defined($ysizeOpt)) {
$pamcraterArgs .= "'-height=$ysizeOpt' ";
}
if (defined($widthOpt)) {
$pamcraterArgs .= "'-width=$widthOpt' ";
} elsif (defined($xsizeOpt)) {
$pamcraterArgs .= "'-width=$xsizeOpt' ";
}
if (defined($randomseedOpt)) {
$pamcraterArgs .= "'-randomseed=$randomseedOpt' ";
}
my $pamshadedreliefArgs;
$pamshadedreliefArgs = ''; # initial value
if (defined($gammaOpt)) {
$pamshadedreliefArgs .= "'-gamma=$gammaOpt' ";
}
my $termStatus =
system(
"pamcrater $pamcraterArgs | " .
"pamshadedrelief $pamshadedreliefArgs |" .
"pamtopnm");
exit($termStatus == 0 ? 0 : 1);