Image::Info::SVG3pm

Usage

 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);

Overview

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.

Methods

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

Files

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

Compatibility

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.

Notes

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