DjVu::Detect - Detect DjVu files.
use DjVu::Detect qw(detect_djvu_file detect_djvu_chunk); my $has_djvu_chunk = detect_djvu_chunk($file, $chunk_name); my $is_djvu = detect_djvu_file($file);
This Perl module detect DjVu files through magic string and detect if DjVu file has chunk type.
List of supported files: djvu
detect_djvu_chunk
my $has_djvu_chunk = detect_djvu_chunk($file, $chunk_name);
Detect if DjVu file contain DjVu chunk.
Returns 1/0.
detect_djvu_file
my $is_djvu = detect_djvu_file($file);
Detect if file is DjVu file by magic string of IFF and first 'FORM' chunk.
detect_djvu_chunk(): Program 'djvudump' doesn't exists. detect_dwg_file(): Cannot close file '%s'. Cannot open file '%s'.
use strict; use warnings; use DjVu::Detect qw(detect_djvu_file); use File::Temp qw(tempfile); use IO::Barf qw(barf); use MIME::Base64; # Data in base64. my $data = <<'END'; QVQmVEZPUk0= END # Temp file. my (undef, $temp_file) = tempfile(); # Save data to file. barf($temp_file, decode_base64($data)); # Check file. my $is_djvu = detect_djvu_file($temp_file); # Print out. if ($is_djvu) { print "File '$temp_file' is DjVu file.\n"; } else { print "File '$temp_file' isn't DjVu file.\n"; } # Output like: # File '%s' is DjVu file.
use strict; use warnings; use DjVu::Detect qw(detect_djvu_file); # Arguments. if (@ARGV < 1) { print STDERR "Usage: $0 file\n"; exit 1; } my $file = $ARGV[0]; # Check DjVu file. my $is_djvu = detect_djvu_file($file); # Print out. if ($is_djvu) { print "File '$file' is DjVu file.\n"; } else { print "File '$file' isn't Djvu file.\n"; } # Output: # Usage: __SCRIPT__ file
Alien::DjVuLibre, Error::Pure, Exporter, File::Spec::Functions.
Common rules for searching DjVu files.
https://github.com/michal-josef-spacek/DjVu-Detect
Test file 11a7ffc0-c61e-11e6-ac1c-001018b5eb5c.djvu is generated from scanned book edition from http://www.digitalniknihovna.cz/mzk/view/uuid:814e66a0-b6df-11e6-88f6-005056827e52?page=uuid:11a7ffc0-c61e-11e6-ac1c-001018b5eb5c
Michal Josef Špaček mailto:skim@cpan.org
http://skim.cz
© 2021-2023 Michal Josef Špaček
BSD 2-Clause License
0.05
To install DjVu::Detect, copy and paste the appropriate command in to your terminal.
cpanm
cpanm DjVu::Detect
CPAN shell
perl -MCPAN -e shell install DjVu::Detect
For more information on module installation, please visit the detailed CPAN module installation guide.