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| -rwxr-xr-x | psresize2.pl | 377 |
1 files changed, 377 insertions, 0 deletions
diff --git a/psresize2.pl b/psresize2.pl new file mode 100755 index 0000000..a5311bd --- /dev/null +++ b/psresize2.pl @@ -0,0 +1,377 @@ +#!/usr/bin/perl -w + +=head1 SYNOPSIS + +psnup2.pl - a better psnup + +For details, see http://consodoc.com/psnup2/ + +=head1 USAGE + +psnup2.pl -d -m <margin> -w <page_width> -h <page_height> + -l <n_long_edge> -s <n_short_edge> -r <reverse> -D + SOURCE [DEST] + +-d If specified, only prints out the command. +-m Margin, in centimeters, that should be kept around the page. Default to 1. +-w Resulting page width, in centimeters. Default to 21. +-h Resulting page height, in centimeters. Default to 29.7. +-l Number of pages to fit on the long edge. Default to 2. +-s Number of pages to fit on the short edge. Default to 1. +-r If specified, the order is reversed on the long edge. +-D Rotation direction, if needed ("L" or "R"). Default to "L". + +=head1 REQUIRE + +Requires psutils installed and available in the command line +http://www.tardis.ed.ac.uk/~ajcd/psutils/ + +=head1 AUTHOR + +Public domain, (c) Oleg Parashchenko, Lionel Guy + +=head1 VERSION + +Version: 0.0.5, 23 October 2008 + +=cut + +use Getopt::Long qw(:config no_ignore_case bundling); +use Pod::Usage; +use IPC::Open2; +use IPC::Open3; +use POSIX qw(floor); +use strict; + + + +# +# Options & arguments +# + +my ($outwidth,$outheight, $inwidth,$inheight); +my $margin; +my $crop; +my $rotdir = 'L'; +my $quiet; +my $man; +my $help; + +# TODO: "-m h1cm:v3cm": horizontal, vertical +GetOptions( "w|width=s" => \$outwidth, + "h|height=s" => \$outheight, + "p|paper=s" => sub { &papersize ($_[1],\$outwidth,\$outheight) }, + "W|Width=s" => \$inwidth, + "H|Height=s" => \$inheight, + "P|Paper=s" => sub { &papersize ($_[1],\$inwidth,\$inheight) }, + "m|margin=s" => \$margin, + "c|crop" => \$crop, + "r|rotation=s" => \$rotdir, + "q|quiet" => \$quiet, + "help" => \$help, + "man" => \$man ) + or pod2usage(2); + +pod2usage(1) if (defined $help or $#ARGV > 1); +pod2usage(-exitstatus => 0, -verbose => 2) if defined $man; + +# Input and output files +my ($infile, $outfile) = @ARGV; + + + +# +# Default values +# + +# Default margin +unless (defined $margin) { + $margin = 0; + $margin = "1cm" if defined $crop; +} + +# Default output papersize +&papersize ("a4", \$outwidth, \$outheight) + unless (defined $outwidth and defined $outheight); + +# Default unit: point +map {&topoints ($_)} ( \$outwidth, \$outheight, + \$inwidth, \$inheight, + \$margin ); + +# Rotation +if (lc $rotdir eq "left" or uc $rotdir eq 'L') { + $rotdir = 'L' +} elsif (lc $rotdir eq "right" or uc $rotdir eq 'R') { + $rotdir = 'R' +} else { + die "Unknown rotation direction: `$rotdir'" +} + + +# Open input and output files +if (defined $infile && $infile ne "-") { + open *FIN, '<', "$infile" or die "Can't read `$infile': $!"; + +} else { + *FIN = *STDIN; +} + +if (defined $outfile && $outfile ne "-") { + open *FOUT, '>', "$outfile" or die "Can't create `$outfile': $!"; +} else { + *FOUT = *STDOUT; +} + + + +# +# Bounding box +# +my @bbox; +if (defined $crop) { + # Calculate the maximal bounding box + + # Need to duplicate FIN, since it will be closed in the parent process + open *KIDFIN, "<&FIN" or die "Can't dup FIN: $!"; + + my $pid = open3 "<&KIDFIN", ">&GS", *GS, + 'gs', '-sDEVICE=bbox', '-dBATCH', '-dNOPAUSE', '-' + or die "Can't run: `gs -sDEVICE=bbox -dBATCH -dNOPAUSE -'"; + my $n = 0; + my ($x0, $y0, $x1, $y1) = (1<<16, 1<<16, -(1<<16), -(1<<16)); + while (<GS>) { + if ($_ =~ m/^\%\%BoundingBox: (\d+) (\d+) (\d+) (\d+)/) { + $x0 = $1 if $1 < $x0; + $y0 = $2 if $2 < $y0; + $x1 = $3 if $3 > $x1; + $y1 = $4 if $4 > $y1; + print STDERR "[", ++$n, "] "; + } + } + close GS; + print STDERR "\n"; + + # No zombie processes + waitpid $pid, 0; + + die "Error when calculating bounding box" if ($x0 >= $x1 || $y0 >= $y1); + @bbox = ($x0, $y0, $x1, $y1); + + # Let's go back to the beginning of the input + seek FIN, 0, 0 or die "$!"; + +} elsif (defined $inwidth and defined $inheight) { + @bbox = (0, 0, $inwidth, $inheight); +} else { + # Guess page size from the input file + + # Duplicate the input filehandle, to avoid to seek into it + open *FIN2, "<&FIN" or die "Can't dup FIN: $!"; + while (<FIN2>) { + if ($_ =~ m/^\%\%BoundingBox: (\d+) (\d+) (\d+) (\d+)/) { + @bbox = ($1, $2, $3, $4); + last; + } + } + die "Cannot guess input page size!" unless @bbox; + close FIN2; +} + + + +# +# Calculate PStoPS specification +# +my ($x0,$x1) = &calculate_coordinates($outwidth , $margin); +my ($y0,$y1) = &calculate_coordinates($outheight, $margin); + +my $spec = 0 . &calc_pstops_page(@bbox, $x0, $y0, $x1, $y1); + + + +# +# Run the program and filter the output +# + +my $pid = open2 *FINPS2PS, "<&FIN", + 'pstops', "-w$outwidth", "-h$outheight", "$spec" + or die "Can't run `pstops -w$outwidth -h$outheight $spec': $!\n"; + +my $l; +# Header and comments +while (defined ($l = <FINPS2PS>) && $l ne "\%\%EndComments\n") { + # Optional, but nice: tune how "gv" will show the document + next if $l =~ m/^\%\%DocumentMedia:/; + + if ($l =~ m/^\%\%BoundingBox:/) { + print FOUT "\%\%BoundingBox: 0 0 $outwidth $outheight\n" + or die "Can't print: $!"; + next; + } + print FOUT $l or die "Can't print: $!"; +} + +# Important to print the document right +# TODO: die "Can't print: $!" +print FOUT << "EOF"; +\%\%EndComments +\%\%BeginFeature: *PageSize ($outwidth $outheight) +<< /PageSize [$outwidth $outheight] >> setpagedevice +\%\%EndFeature +EOF + +# Body +while (<FINPS2PS>) { + print FOUT $_ or die "Can't print: $!"; + + # PStoPSclip hack: increase clipping box by 10 + if ($_ =~ m/^userdict\/PStoPSclip{0 0 moveto$/) { + $l = <FINPS2PS>; + $l =~ s/\./0./g; + print FOUT $l or die "Can't print: $!"; + } +} + +close FIN; +close FOUT; + +# No zombie processes +waitpid $pid, 0; + + + + +# ========================================================= + +# +# Calculate an item of the pstops specification +# +sub calc_pstops_page { + my ($fx0, $fy0, $fx1, $fy1, + $tx0, $ty0, $tx1, $ty1) = @_; + + # From and to width / height + my ($wf, $hf) = ($fx1 - $fx0, $fy1 - $fy0); + my ($wt, $ht) = ($tx1 - $tx0, $ty1 - $ty0); + + # Check if rotation required + my $rotation = (($wf > $hf) xor ($wt > $ht)); + + # Scale factor width / height + my ($sw, $sh); + if ($rotation) { + ($sw, $sh) = ($ht / $wf, $wt / $hf); + } else { + ($sw, $sh) = ($wt / $wf, $ht / $hf); + } + + # We take the smallest scale + my $scale = ($sw > $sh) ? $sh : $sw; + + # Calculate the centers of the boxes + my ($cxf, $cyf) = ( .5 * ($fx0 + $fx1), .5 * ($fy0 + $fy1) ); + my ($cxt, $cyt) = ( .5 * ($tx0 + $tx1), .5 * ($ty0 + $ty1) ); + + # First, PStoPs scales, then rotates, then moves + ($cxf, $cyf) = ($cxf * $scale, $cyf * $scale); + if ($rotation) { + if ($rotdir eq 'L') { + ($cxf, $cyf) = (-$cyf, $cxf); + } else { + ($cxf, $cyf) = ($cyf, -$cxf); + } + } else { + $rotdir = ''; + } + my ($movex, $movey) = ($cxt - $cxf, $cyt - $cyf); + + # Generate the summary + return sprintf( '%s@%.3f(%.3f,%.3f)', $rotdir, $scale, $movex, $movey); +} + + +# +# Calculate the begining and ending coordinates, after shaving 2 times +# the margin +# +sub calculate_coordinates { + my ($length, $margin) = @_; + my $skip = $length - $margin; + my $outwidth = $skip - $margin; + my @coords = ( &round( &round($skip) - $outwidth ), &round($skip) ); + return @coords; +} + + +# +# Round a float number +# +sub round { + return floor ($_[0] + .5); +} + + +# +# In-place convert the given length into postscript points +# +sub topoints { + my $l = $_; + return unless defined $$l; + + $$l =~ /^([+-]?\d*\.?\d+)(\w*)$/ or die "Unable to parse `$$l'"; + + my $r = $1; + if ($2 eq "" or $2 eq "pt") { + # nothing + } elsif ($2 eq "in") { + $r *= 72; + } elsif ($2 eq "cm") { + $r *= 72/2.54; + } elsif ($2 eq "mm") { + $r *= 72/25.4; + } else { + die "Unknown unit: `$2'"; + } + $$l = &round ($r); +} + + +# +# In-place set the given width and length to the predefined papersize +# +sub papersize { + my ($p,$w,$h) = @_; + + if ($p eq "a0") { + ($$w,$$h) = ("841mm", "1189mm"); + } elsif ($p eq "a1") { + ($$w,$$h) = ("594mm", "841mm"); + } elsif ($p eq "a2") { + ($$w,$$h) = ("420mm", "594mm"); + } elsif ($p eq "a3") { + ($$w,$$h) = ("297mm", "420mm"); + } elsif ($p eq "a4") { + ($$w,$$h) = ("210mm", "297mm"); + } elsif ($p eq "a5") { + ($$w,$$h) = ("148mm", "210mm"); + } elsif ($p eq "letter") { + ($$w,$$h) = ("8.5in", "11in"); + } elsif ($p eq "legal") { + ($$w,$$h) = ("8.5in", "14in"); + } elsif ($p eq "tabloid") { + ($$w,$$h) = ("11in", "17in"); + } elsif ($p eq "statement") { + ($$w,$$h) = ("5.5in", "8.5in"); + } elsif ($p eq "executive") { + ($$w,$$h) = ("7.25in", "10.5in"); + } elsif ($p eq "folio") { + ($$w,$$h) = ("8.27in", "13in"); + } elsif ($p eq "quarto") { + ($$w,$$h) = ("9in", "11in"); + } elsif ($p eq "10x14") { + ($$w,$$h) = ("10in", "14in"); + } else { + die "Unknown paper size: `$p'"; + } +} |