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mirror of https://github.com/svg/svgo.git synced 2025-04-19 10:22:15 +03:00
svgo/plugins/sortAttrs.js
Bogdan Chadkin 07f8d606e0
Implement preset-default plugin (#1513)
I saw complaints about `extendDefaultPlugins` api

- it cannot be used when svgo is installed globally
- it requires svgo to be installed when using svgo-loader or svgo-jsx
- it prevents using serializable config formats like json

In this diff I introduced the new plugin which is a bundle of all
default plugins.

```js
module.exports = {
  plugins: [
    'preset_default',
    // or
    {
      name: 'preset_default',
      floatPrecision: 4,
      overrides: {
        convertPathData: {
          applyTransforms: false
        }
      }
    }
  ]
}
```
2021-08-13 19:07:08 +03:00

91 lines
1.9 KiB
JavaScript

'use strict';
const { parseName } = require('../lib/svgo/tools.js');
exports.name = 'sortAttrs';
exports.type = 'perItem';
exports.active = false;
exports.description = 'sorts element attributes (disabled by default)';
exports.params = {
order: [
'id',
'width',
'height',
'x',
'x1',
'x2',
'y',
'y1',
'y2',
'cx',
'cy',
'r',
'fill',
'stroke',
'marker',
'd',
'points',
],
};
/**
* Sort element attributes for epic readability.
*
* @param {Object} item current iteration item
* @param {Object} params plugin params
*
* @author Nikolay Frantsev
*/
exports.fn = function (item, params) {
const orderlen = params.order.length + 1;
const xmlnsOrder = params.xmlnsOrder || 'front';
if (item.type === 'element') {
const attrs = Object.entries(item.attributes);
attrs.sort(([aName], [bName]) => {
const { prefix: aPrefix } = parseName(aName);
const { prefix: bPrefix } = parseName(bName);
if (aPrefix != bPrefix) {
// xmlns attributes implicitly have the prefix xmlns
if (xmlnsOrder == 'front') {
if (aPrefix === 'xmlns') return -1;
if (bPrefix === 'xmlns') return 1;
}
return aPrefix < bPrefix ? -1 : 1;
}
let aindex = orderlen;
let bindex = orderlen;
for (let i = 0; i < params.order.length; i++) {
if (aName == params.order[i]) {
aindex = i;
} else if (aName.indexOf(params.order[i] + '-') === 0) {
aindex = i + 0.5;
}
if (bName == params.order[i]) {
bindex = i;
} else if (bName.indexOf(params.order[i] + '-') === 0) {
bindex = i + 0.5;
}
}
if (aindex != bindex) {
return aindex - bindex;
}
return aName < bName ? -1 : 1;
});
const sorted = {};
for (const [name, value] of attrs) {
sorted[name] = value;
}
item.attributes = sorted;
}
};