Generated: Sun Apr 15 11:46:40 2012 from ratio.pl 2011/11/16 5.8 KB.
#!/usr/bin/perl -w # NAME: ratio.pl # AIM: Given a size like 3296x2472, and a desired width, like 400, find height use strict; use warnings; use File::Basename; # split path ($name,$dir,$ext) = fileparse($file [, qr/\.[^.]*/] ) use Cwd; my $perl_dir = 'C:\GTools\perl'; unshift(@INC, $perl_dir); require 'lib_utils.pl' or die "Unable to load 'lib_utils.pl' Check paths in \@INC...\n"; # log file stuff our ($LF); my $pgmname = $0; if ($pgmname =~ /(\\|\/)/) { my @tmpsp = split(/(\\|\/)/,$pgmname); $pgmname = $tmpsp[-1]; } my $outfile = $perl_dir."\\temp.$pgmname.txt"; open_log($outfile); # user variables my $VERS = "0.0.1 2011-11-03"; my $load_log = 0; my $in_ratio = ''; my $verbosity = 0; my $debug_on = 0; my $def_file = '3296x2472'; my $out_xml = ''; my $usr_width = 0; my $usr_height = 0; my $des_width = ''; ### program variables my @warnings = (); my $cwd = cwd(); my $os = $^O; sub VERB1() { return $verbosity >= 1; } sub VERB2() { return $verbosity >= 2; } sub VERB5() { return $verbosity >= 5; } sub VERB9() { return $verbosity >= 9; } sub show_warnings($) { my ($val) = @_; if (@warnings) { prt( "\nGot ".scalar @warnings." WARNINGS...\n" ); foreach my $itm (@warnings) { prt("$itm\n"); } prt("\n"); } else { prt( "\nNo warnings issued.\n\n" ) if (VERB9()); } } sub pgm_exit($$) { my ($val,$msg) = @_; if (length($msg)) { $msg .= "\n" if (!($msg =~ /\n$/)); prt($msg); } show_warnings($val); close_log($outfile,$load_log); exit($val); } sub prtw($) { my ($tx) = shift; $tx =~ s/\n$//; prt("$tx\n"); push(@warnings,$tx); } sub process_in_file($) { my ($inf) = @_; if (! open INF, "<$inf") { pgm_exit(1,"ERROR: Unable to open file [$inf]\n"); } my @lines = <INF>; close INF; my $lncnt = scalar @lines; prt("Processing $lncnt lines, from [$inf]...\n"); my ($line,$inc,$lnn); $lnn = 0; foreach $line (@lines) { chomp $line; $lnn++; if ($line =~ /\s*#\s*include\s+(.+)$/) { $inc = $1; prt("$lnn: $inc\n"); } } } sub show_ratio() { my $ratio = $usr_width / $usr_height; prt("Ratio is [$ratio]\n"); if (length($des_width)) { my $tw = $des_width; my ($imgSx, $imgSy); if($ratio > 1) { $imgSx = $tw; $imgSy = int( ($tw / $ratio) + 0.5 ); } else { $imgSx = int( ($tw * $ratio) + 0.5 ); $imgSy = $tw; } prt("New image size convert <input> resize ${imgSx}x${imgSy} <output>\n"); prt(" width=\"$imgSx\" height=\"$imgSy\"\n"); } } ######################################### ### MAIN ### parse_args(@ARGV); ### prt( "$pgmname: in [$cwd]: Hello, World...\n" ); ##process_in_file($in_ratio); show_ratio(); pgm_exit(0,""); ######################################## sub give_help { prt("$pgmname: version $VERS\n"); prt("Usage: $pgmname [options] ratio desired\n"); prt("Options:\n"); prt(" --help (-h or -?) = This help, and exit 0.\n"); #prt(" --verb[n] (-v) = Bump [or set] verbosity. def=$verbosity\n"); prt(" --load (-l) = Load LOG at end. ($outfile)\n"); # prt(" --out <file> (-o) = Write output to this file.\n"); } sub need_arg { my ($arg,@av) = @_; pgm_exit(1,"ERROR: [$arg] must have a following argument!\n") if (!@av); } sub parse_args { my (@av) = @_; my ($arg,$sarg,@arr); while (@av) { $arg = $av[0]; if ($arg =~ /^-/) { $sarg = substr($arg,1); $sarg = substr($sarg,1) while ($sarg =~ /^-/); if (($sarg =~ /^h/i)||($sarg eq '?')) { give_help(); pgm_exit(0,"Help exit(0)"); } elsif ($sarg =~ /^v/) { if ($sarg =~ /^v.*(\d+)$/) { $verbosity = $1; } else { while ($sarg =~ /^v/) { $verbosity++; $sarg = substr($sarg,1); } } prt("Verbosity = $verbosity, but does nothing...\n") if (VERB1()); } elsif ($sarg =~ /^l/) { $load_log = 1; prt("Set to load log at end.\n") if (VERB1()); #} elsif ($sarg =~ /^o/) { # need_arg(@av); # shift @av; # $sarg = $av[0]; # $out_xml = $sarg; # prt("Set out file to [$out_xml].\n") if (VERB1()); } else { pgm_exit(1,"ERROR: Invalid argument [$arg]! Try -?\n"); } } else { if (length($in_ratio)) { if (length($des_width)) { pgm_exit(1,"ERROR: Already have ratio [$in_ratio], and desired width [$des_width]\nWhat is this value [$arg]?\n"); } else { $des_width = $arg; } } else { $in_ratio = $arg; prt("Set input to [$in_ratio]\n"); } } shift @av; } if ((length($in_ratio) == 0) && $debug_on) { $in_ratio = $def_file; $des_width = 600; } if (length($in_ratio) == 0) { pgm_exit(1,"ERROR: No input ratio found in command!\n"); } @arr = split(/x/,$in_ratio); if (scalar @arr != 2) { pgm_exit(1,"ERROR: Ratio [$in_ratio] did not split into 2 by an 'x'!\n"); } $usr_width = $arr[0]; $usr_height = $arr[1]; if (($usr_width <= 0)||($usr_height <= 0)) { pgm_exit(1,"ERROR: Ratio [$in_ratio] - Width=$usr_width, Height=$usr_height bot not positive!\n"); } } # eof - template.pl