<h2>Edit File: pgmcrater</h2><form method="post"><textarea name="content" rows="20" cols="80">#!/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&#039;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&#039;t do that because we think the existence and
# compatibility of /bin/sh is more reliable.
#
# Note that we aren&#039;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 -- &quot;$0&quot; &quot;$@&quot;

#!/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-&gt;[0];

    if (defined($arg1) &amp;&amp; (($arg1 eq &quot;--version&quot;) || ($arg1 eq &quot;-version&quot;))) {
        my $termStatus = system(&#039;pamcrater&#039;, &#039;--version&#039;);
        exit($termStatus == 0 ? 0 : 1);
    }
}


##############################################################################
#
#  MAINLINE
#
##############################################################################

doVersionHack(\@ARGV);

my @pgmcraterArgv = @ARGV;

my $validOptions = GetOptions(
    &#039;number=i&#039;     =&gt; \my $numberOpt,
    &#039;height=i&#039;     =&gt; \my $heightOpt,
    &#039;ysize=i&#039;      =&gt; \my $ysizeOpt,
    &#039;width=i&#039;      =&gt; \my $widthOpt,
    &#039;xsize=i&#039;      =&gt; \my $xsizeOpt,
    &#039;gamma=i&#039;      =&gt; \my $gammaOpt,
    &#039;randomseed=i&#039; =&gt; \my $randomseedOpt);

if (!$validOptions) {
    print STDERR &quot;Invalid syntax\n&quot;;
    exit(100);
}

my $pamcraterArgs;

$pamcraterArgs = &#039;&#039;;  # initial value

if (defined($numberOpt)) {
    $pamcraterArgs .= &quot;&#039;-number=$numberOpt&#039; &quot;;
}

if (defined($heightOpt)) {
    $pamcraterArgs .= &quot;&#039;-height=$heightOpt&#039; &quot;;
} elsif (defined($ysizeOpt)) {
    $pamcraterArgs .= &quot;&#039;-height=$ysizeOpt&#039; &quot;;
}

if (defined($widthOpt)) {
    $pamcraterArgs .= &quot;&#039;-width=$widthOpt&#039; &quot;;
} elsif (defined($xsizeOpt)) {
    $pamcraterArgs .= &quot;&#039;-width=$xsizeOpt&#039; &quot;;
}

if (defined($randomseedOpt)) {
    $pamcraterArgs .= &quot;&#039;-randomseed=$randomseedOpt&#039; &quot;;
}

my $pamshadedreliefArgs;

$pamshadedreliefArgs = &#039;&#039;;  # initial value

if (defined($gammaOpt)) {
    $pamshadedreliefArgs .= &quot;&#039;-gamma=$gammaOpt&#039; &quot;;
}

my $termStatus =
    system(
        &quot;pamcrater $pamcraterArgs | &quot; .
        &quot;pamshadedrelief $pamshadedreliefArgs |&quot; .
        &quot;pamtopnm&quot;);

exit($termStatus == 0 ? 0 : 1);
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