Image::Info::SVG(3) User Contributed Perl Documentation Image::Info::SVG(3)

Image::Info::SVG - SVG support for Image::Info

use Image::Info qw(image_info dim);

my $info = image_info("image.svg");
if (my $error = $info->{error}) {
    die "Can't parse image info: $error\n";
}
my $title = $info->{SVG_Title};

my($w, $h) = dim($info);

This modules supplies the standard key names except for BitsPerSample, Compression, Gamma, Interlace, LastModificationTime, as well as:
ImageDescription
The image description, corresponds to <desc>.
SVG_Image
A scalar or reference to an array of scalars containing the URI's of embedded images (JPG or PNG) that are embedded in the image.
SVG_StandAlone
Whether or not the image is standalone.
SVG_Title
The image title, corresponds to <title>
SVG_Version
The URI of the DTD the image conforms to.

$info->process_file($source, $options);

Processes one file and sets the found info fields in the $info object.

This module requires either XML::LibXML::Reader or XML::Simple.

Previous versions (until Image-Info-1.28) used XML::Simple as the underlying parser. Since Image-Info-1.29 the default parser is XML::LibXML::Reader which is much more faster, memory-efficient, and does not rely on regular expressions for some aspects of XML parsing. If for some reason you need the old parser, you can force it by setting the variable @Image::Info::SVG::PREFER_MODULE as early as possible:

use Image::Info;
@Image::Info::SVG::PREFER_MODULE = qw(Image::Info::SVG::XMLSimple Image::Info::SVG::XMLLibXMLReader);

The variable $Image::Info::SVG::USING_MODULE can be queried to see which parser is in use (after Image::Info::SVG is required).

Since 1.38_50 processing of XML external entities (XXE) is not done anymore for security reasons in both backends (Image::Info::SVG::XMLLibXMLReader and Image::Info::SVG::XMLSimple). Controlling XXE processing behavior in XML::Simple is not really possible (see https://rt.cpan.org/Ticket/Display.html?id=83794), so as a workaround the underlying SAX parser is fixed to XML::SAX::PurePerl which is uncapable of processing external entities — but unfortunately it is also a slow parser.

Image::Info, XML::LibXML::Reader, XML::Simple, XML::SAX::PurePerl

For more information about SVG see http://www.w3.org/Graphics/SVG/

Random notes:

Colors
  # iterate over polygon,rect,circle,ellipse,line,polyline,text for style->stroke: style->fill:?
  #  and iterate over each of these within <g> too?! and recurse?!
  # append <color>'s
  # perhaps even deep recursion through <svg>'s?
ColorProfile <color-profile>
RenderingIntent ?
requiredFeatures
requiredExtensions
systemLanguage

Jerrad Pierce <belg4mit@mit.edu>/<webmaster@pthbb.org> wrote the original code based on XML::Simple

Slaven Rezic <srezic@cpan.org> wrote the code using XML::LibXML::Reader

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

2021-05-24 perl v5.34.0