Cannot parse when entity is used for namespace declaration

[chulkilee]

Problem

SVG file generated by Adobe Illustrator uses references to XML entities when declaring name spaces. See the following excerpt:

<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" [
<!ENTITY ns_extend "http://ns.adobe.com/Extensibility/1.0/">
<!ENTITY ns_ai "http://ns.adobe.com/AdobeIllustrator/10.0/">
<!ENTITY ns_graphs "http://ns.adobe.com/Graphs/1.0/">
]>
<svg xmlns:x="&ns_extend;" xmlns:i="&ns_ai;" xmlns:graph="&ns_graphs;" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" x="0px" y="0px" width="583.029px" height="45px" viewBox="0 0 583.029 45" enable-background="new 0 0 583.029 45" xml:space="preserve">

This is due to the limitation of https://github.com/isaacs/sax-js (not a bug).

Solutions

• Turn off strict mode in svgo: it works for above cases, but it may allow other cases passed without any error
• Make sax-js to support DTD
• Use other parser library

Resource

See related inkscape bugs: 1093433 and 166371

[SebCorbin]

Just encountered this, how would you turn off strict mode?

[chulkilee]

Change this line https://github.com/svg/svgo/blob/v0.4.4/lib/svgo/svg2js.js#L7

var config = {
    strict: true,
    trim: true,
    normalize: true,
    lowercase: true,
    xmlns: true,
    position: false
};