JezK
Edit File: 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; use IO::Handle; sub pm_message($) { STDERR->print("pgmcrater: $_[0]\n"); } sub doVersionHack($) { 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) { pm_message("Invalid syntax"); 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);