You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
1.4 KiB
58 lines
1.4 KiB
3 years ago
|
'use strict';
|
||
|
|
|
||
|
|
const { detachNodeFromParent } = require('../lib/xast.js');
|
||
|
|
|
||
|
|
exports.name = 'removeEmptyText';
|
||
|
|
exports.type = 'visitor';
|
||
|
|
exports.active = true;
|
||
|
|
exports.description = 'removes empty <text> elements';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Remove empty Text elements.
|
||
|
|
*
|
||
|
|
* @see https://www.w3.org/TR/SVG11/text.html
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* Remove empty text element:
|
||
|
|
* <text/>
|
||
|
|
*
|
||
|
|
* Remove empty tspan element:
|
||
|
|
* <tspan/>
|
||
|
|
*
|
||
|
|
* Remove tref with empty xlink:href attribute:
|
||
|
|
* <tref xlink:href=""/>
|
||
|
|
*
|
||
|
|
* @author Kir Belevich
|
||
|
|
*
|
||
|
|
* @type {import('../lib/types').Plugin<{
|
||
|
|
* text?: boolean,
|
||
|
|
* tspan?: boolean,
|
||
|
|
* tref?: boolean
|
||
|
|
* }>}
|
||
|
|
*/
|
||
|
|
exports.fn = (root, params) => {
|
||
|
|
const { text = true, tspan = true, tref = true } = params;
|
||
|
|
return {
|
||
|
|
element: {
|
||
|
|
enter: (node, parentNode) => {
|
||
|
|
// Remove empty text element
|
||
|
|
if (text && node.name === 'text' && node.children.length === 0) {
|
||
|
|
detachNodeFromParent(node, parentNode);
|
||
|
|
}
|
||
|
|
// Remove empty tspan element
|
||
|
|
if (tspan && node.name === 'tspan' && node.children.length === 0) {
|
||
|
|
detachNodeFromParent(node, parentNode);
|
||
|
|
}
|
||
|
|
// Remove tref with empty xlink:href attribute
|
||
|
|
if (
|
||
|
|
tref &&
|
||
|
|
node.name === 'tref' &&
|
||
|
|
node.attributes['xlink:href'] == null
|
||
|
|
) {
|
||
|
|
detachNodeFromParent(node, parentNode);
|
||
|
|
}
|
||
|
|
},
|
||
|
|
},
|
||
|
|
};
|
||
|
|
};
|