Image::Info::SVG(3pm)

1Image::Info::SVG(3)   User Contributed Perl Documentation  Image::Info::SVG(3)
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NAME

6       Image::Info::SVG - SVG support for Image::Info
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SYNOPSIS

9        use Image::Info qw(image_info dim);
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11        my $info = image_info("image.svg");
12        if (my $error = $info->{error}) {
13            die "Can't parse image info: $error\n";
14        }
15        my $title = $info->{SVG_Title};
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17        my($w, $h) = dim($info);
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DESCRIPTION

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

40   process_file()
41               $info->process_file($source, $options);
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43       Processes one file and sets the found info fields in the $info object.
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FILES

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

49       Previous versions (until Image-Info-1.28) used XML::Simple as the
50       underlying parser. Since Image-Info-1.29 the default parser is
51       XML::LibXML::Reader which is much more faster, memory-efficient, and
52       does not rely on regular expressions for some aspects of XML parsing.
53       If for some reason you need the old parser, you can force it by setting
54       the variable @Image::Info::SVG::PREFER_MODULE as early as possible:
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56           use Image::Info;
57           @Image::Info::SVG::PREFER_MODULE = qw(Image::Info::SVG::XMLSimple Image::Info::SVG::XMLLibXMLReader);
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59       The variable $Image::Info::SVG::USING_MODULE can be queried to see
60       which parser is in use (after Image::Info::SVG is required).
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62       Since 1.38_50 processing of XML external entities (XXE) is not done
63       anymore for security reasons in both backends
64       (Image::Info::SVG::XMLLibXMLReader and Image::Info::SVG::XMLSimple).
65       Controlling XXE processing behavior in XML::Simple is not really
66       possible (see <https://rt.cpan.org/Ticket/Display.html?id=83794>), so
67       as a workaround the underlying SAX parser is fixed to
68       XML::SAX::PurePerl which is uncapable of processing external entities —
69       but unfortunately it is also a slow parser.
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NOTES

75       For more information about SVG see <http://www.w3.org/Graphics/SVG/>
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77       Random notes:
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79         Colors
80           # iterate over polygon,rect,circle,ellipse,line,polyline,text for style->stroke: style->fill:?
81           #  and iterate over each of these within <g> too?! and recurse?!
82           # append <color>'s
83           # perhaps even deep recursion through <svg>'s?
84         ColorProfile <color-profile>
85         RenderingIntent ?
86         requiredFeatures
87         requiredExtensions
88         systemLanguage
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AUTHOR

91       Jerrad Pierce <belg4mit@mit.edu>/<webmaster@pthbb.org> wrote the
92       original code based on XML::Simple
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94       Slaven Rezic <srezic@cpan.org> wrote the code using XML::LibXML::Reader
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96       This library is free software; you can redistribute it and/or modify it
97       under the same terms as Perl itself.
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101perl v5.30.1                      2020-01-30               Image::Info::SVG(3)