107 lines
2.8 KiB
JavaScript
107 lines
2.8 KiB
JavaScript
|
'use strict';
|
|||
|
|
|
|||
|
|
const { removeLeadingZero } = require('../lib/svgo/tools');
|
|||
|
|
|
|||
|
|
exports.name = 'cleanupNumericValues';
|
|||
|
|
exports.description =
|
|||
|
|
'rounds numeric values to the fixed precision, removes default ‘px’ units';
|
|||
|
|
|
|||
|
|
const regNumericValues =
|
|||
|
|
/^([-+]?\d*\.?\d+([eE][-+]?\d+)?)(px|pt|pc|mm|cm|m|in|ft|em|ex|%)?$/;
|
|||
|
|
|
|||
|
|
const absoluteLengths = {
|
|||
|
|
// relative to px
|
|||
|
|
cm: 96 / 2.54,
|
|||
|
|
mm: 96 / 25.4,
|
|||
|
|
in: 96,
|
|||
|
|
pt: 4 / 3,
|
|||
|
|
pc: 16,
|
|||
|
|
px: 1,
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* Round numeric values to the fixed precision,
|
|||
|
|
* remove default 'px' units.
|
|||
|
|
*
|
|||
|
|
* @author Kir Belevich
|
|||
|
|
*
|
|||
|
|
* @type {import('./plugins-types').Plugin<'cleanupNumericValues'>}
|
|||
|
|
*/
|
|||
|
|
exports.fn = (_root, params) => {
|
|||
|
|
const {
|
|||
|
|
floatPrecision = 3,
|
|||
|
|
leadingZero = true,
|
|||
|
|
defaultPx = true,
|
|||
|
|
convertToPx = true,
|
|||
|
|
} = params;
|
|||
|
|
|
|||
|
|
return {
|
|||
|
|
element: {
|
|||
|
|
enter: (node) => {
|
|||
|
|
if (node.attributes.viewBox != null) {
|
|||
|
|
const nums = node.attributes.viewBox.split(/\s,?\s*|,\s*/g);
|
|||
|
|
node.attributes.viewBox = nums
|
|||
|
|
.map((value) => {
|
|||
|
|
const num = Number(value);
|
|||
|
|
return Number.isNaN(num)
|
|||
|
|
? value
|
|||
|
|
: Number(num.toFixed(floatPrecision));
|
|||
|
|
})
|
|||
|
|
.join(' ');
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
for (const [name, value] of Object.entries(node.attributes)) {
|
|||
|
|
// The `version` attribute is a text string and cannot be rounded
|
|||
|
|
if (name === 'version') {
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
const match = value.match(regNumericValues);
|
|||
|
|
|
|||
|
|
// if attribute value matches regNumericValues
|
|||
|
|
if (match) {
|
|||
|
|
// round it to the fixed precision
|
|||
|
|
let num = Number(Number(match[1]).toFixed(floatPrecision));
|
|||
|
|
/**
|
|||
|
|
* @type {any}
|
|||
|
|
*/
|
|||
|
|
let matchedUnit = match[3] || '';
|
|||
|
|
/**
|
|||
|
|
* @type{'' | keyof typeof absoluteLengths}
|
|||
|
|
*/
|
|||
|
|
let units = matchedUnit;
|
|||
|
|
|
|||
|
|
// convert absolute values to pixels
|
|||
|
|
if (convertToPx && units !== '' && units in absoluteLengths) {
|
|||
|
|
const pxNum = Number(
|
|||
|
|
(absoluteLengths[units] * Number(match[1])).toFixed(
|
|||
|
|
floatPrecision,
|
|||
|
|
),
|
|||
|
|
);
|
|||
|
|
if (pxNum.toString().length < match[0].length) {
|
|||
|
|
num = pxNum;
|
|||
|
|
units = 'px';
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// and remove leading zero
|
|||
|
|
let str;
|
|||
|
|
if (leadingZero) {
|
|||
|
|
str = removeLeadingZero(num);
|
|||
|
|
} else {
|
|||
|
|
str = num.toString();
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// remove default 'px' units
|
|||
|
|
if (defaultPx && units === 'px') {
|
|||
|
|
units = '';
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
node.attributes[name] = str + units;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
},
|
|||
|
|
},
|
|||
|
|
};
|
|||
|
|
};
|