Image::Info::SVG

NAME

Image::Info::SVG − SVG support for Image::Info

SYNOPSIS

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);

DESCRIPTION

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

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

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

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 â but unfortunately it is also a slow parser.

SEE ALSO

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

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

AUTHOR

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.