#!/usr/bin/env perl6
# Simple round trip read and rewrite a PDF
use v6;
use PDF::IO::Reader;
use PDF;

#| rewrite a PDF or FDF and/or convert to/from JSON
sub MAIN(
    Str $file-in,               #= input PDF, FDF or JSON file
    Str $file-out = $file-in,   #= output PDF, FDF or JSON file
    Str  :$password  = '';      #= password for encrypted documents
    Bool :$repair    = False,   #= bypass and repair index. recompute stream lengths. Handy when
                                #= PDF files have been hand-edited.
    Bool :$rebuild  is copy,    #= rebuild object tree (renumber, garbage collect and deduplicate objects)
    Bool :$compress is copy,    #= compress streams
    Bool :$uncompress,          #= uncompress streams
    Str  :$class is copy,       #= load a class (PDF::Class, PDF::Lite, PDF::API6)
    Bool :$render,              #= render and reformat content (needs PDF::Lite or PDF::Class)
    Bool :$decrypt is copy,     #= decrypt
    Bool :$stream,              #= write early and progressively
    ) {

    die "Can't stream a PDF file to itself"
        if $stream && $file-out eq $file-in;

    $compress //= False if $uncompress || $render;
    $rebuild  //= True  if $decrypt || $render;
    $class    //= 'PDF::Lite' if $render;

    CATCH {
        when X::PDF { note .message; exit 1; }
    }

    my PDF $pdf;
    my PDF::IO::Reader $reader;

    if $class {
	$pdf = (require ::($class));
    }

    note "opening {$file-in} ...";
    if $render {
        $pdf .= open( $file-in, :$repair, :$password );
        $reader = $pdf.reader;
    }
    else {
        $reader .= new.open( $file-in, :$repair, :$password );
    }

    if $decrypt {
        with $reader.crypt {
            die "only the owner of this PDF can decrypt it"
                unless .is-owner;
        }
        else {
            $decrypt = False; # not encrypted
        }
    }

    with $compress {
        note $_ ?? "compressing ..." !! "uncompressing ...";
        $reader.recompress(:compress($_));
    }
    elsif $decrypt {
        # ensure all objects have been loaded and decrypted
        $reader.get-objects;
    }

    if $decrypt {
        $reader.crypt = Nil;
        .crypt = Nil with $pdf;
        $reader.trailer<Encrypt>:delete;
    }

    if $render {
        my $n = $pdf.page-count;
        for 1 .. $n {
            $*ERR.print: "rendering... $_/$n\r";
            $pdf.page($_).render;
        }
        $*ERR.say: '';
    }

    note "saving ...";
    ($pdf // $reader).save-as($file-out, :$stream, :$rebuild);
    note "done";

}



head

pdf-rewriter.raku - Rebuild a PDF using L<PDF> modules.


pdf-rewriter.raku [options] file.pdf [out.pdf]
pdf-rewriter.raku [options] file.pdf [out.json] # convert to json
pdf-rewriter.raku [options] file.json [out.pdf] # convert from json


--password    password for an encrypted PDF
--repair      repair the input PDF
--rebuild     rebuild object tree (renumber, garbage collect and deduplicate objects)
--compress    compress streams
--uncompress  uncompress streams, where possible
--class=name  load class (PDF::Lite, PDF::Class, PDF::API6)
--render      render and reformat content (needs PDF::Class or PDF::Lite)
--decrypt     remove encryption
--stream      write progressively and early


Input and output files may be either PDF or JSON.


root

DateString

README

React

=begin React :component<HeaderCol> :id<menu> 
=para L<Documentation|/doc/introduction>
=para L<Modules| /mods>
=para L<Examples| file:../examples/index.podlite>
=para L<Download |file:../download/index.podlite>
=para L<About|file:../about/index.podlite>
=para 🔍 K<⌘K>/K<ctrl-K>
=end React


=begin React :component<HeaderCol> :id<footer>  
=begin nested :!nested
=item1 B<Language>
    =item2 L<Get started|file:../getting-started/getting-started.podlite>
    =item2 L<Why Raku?|/doc/language/faq#Why-should-I-learn-Raku-What's-so-great-about-it>
    =item2 L<Try Raku|https://glot.io/new/raku>
    =item2 L<Raku cheat sheet|https://github.com/Raku/mu/blob/master/docs/Perl6/Cheatsheet/cheatsheet.txt>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<Raku on Exercism|https://exercism.org/tracks/raku>
    =item2 L<Wikipedia|https://en.wikipedia.org/wiki/Raku_(programming_language)>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=begin nested :!nested

=item1 B<L<Documentation|/doc>>
    =item2 L<Getting started, Migration guides from other languages, & Tutorials | file:../doc/introduction.podlite>
    =item2 L<Language References|file:../doc/reference.podlite>
    =item2 L<Type Reference| file:../doc/types.podlite>
    =item2 L<Miscellaneous| file:../doc/miscellaneous.podlite>
    =item2 L<FAQs (Frequently Asked Questions)|/doc/language/faq>
    =item2 L<Community|/doc/language/community>
    =item2 L<The list of all documents|file:../doc/index.podlite>

=item1 B<Resources>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>

=end nested
=begin nested :!nested

=item1 B<Resoures>
    =item2 L<Download | file:../download/index.podlite>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=item1 B<Learning>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Wikibook |https://en.wikibooks.org/wiki/Raku_Programming>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>
    =item2 L<Learn Raku in Y minutes|https://learnxinyminutes.com/docs/raku/>
    =item2 L<Golfing |https://github.com/AlexDaniel/raku-golf-cheatsheet>
=end nested
=begin nested :!nested

=item1 B<Explore>
    =item2 L<Raku Blog Aggregator|https://planet.raku.org/>
    =item2 L<Rakudo Weekly|https://rakudoweekly.blog/>
    =item2 L<The Weekly Challenge |https://perlweeklychallenge.org/>
    =item2 L<Raku Advent Calendar|https://raku-advent.blog/>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=end React


=begin React :component<CookieConsent> :id<CookieConsent> :buttonCaption("Got it!")
=para
This website uses cookies for analytics.
=end React


pdf-rewriter

NAME

SYNOPSIS

Options

DESCRIPTION

SEE ALSO

PDF v0.4.22

Authors

License

Dependencies

Test Dependencies

Provides

Documentation