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'use strict'; const { removeLeadingZero } = require('../lib/svgo/tools.js'); exports.name = 'cleanupListOfValues'; exports.type = 'visitor'; exports.active = false; exports.description = 'rounds list of values to the fixed precision'; const regNumericValues = /^([-+]?\d*\.?\d+([eE][-+]?\d+)?)(px|pt|pc|mm|cm|m|in|ft|em|ex|%)?$/; const regSeparator = /\s+,?\s*|,\s*/; const absoluteLengths = { // relative to px cm: 96 / 2.54, mm: 96 / 25.4, in: 96, pt: 4 / 3, pc: 16, px: 1, }; /** * Round list of values to the fixed precision. * * @example * * ⬇ * * * * ⬇ * * * @author kiyopikko * * @type {import('../lib/types').Plugin<{ * floatPrecision?: number, * leadingZero?: boolean, * defaultPx?: boolean, * convertToPx?: boolean * }>} */ exports.fn = (_root, params) => { const { floatPrecision = 3, leadingZero = true, defaultPx = true, convertToPx = true, } = params; /** * @type {(lists: string) => string} */ const roundValues = (lists) => { const roundedList = []; for (const elem of lists.split(regSeparator)) { const match = elem.match(regNumericValues); const matchNew = elem.match(/new/); // 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 = ''; } roundedList.push(str + units); } // if attribute value is "new"(only enable-background). else if (matchNew) { roundedList.push('new'); } else if (elem) { roundedList.push(elem); } } return roundedList.join(' '); }; return { element: { enter: (node) => { if (node.attributes.points != null) { node.attributes.points = roundValues(node.attributes.points); } if (node.attributes['enable-background'] != null) { node.attributes['enable-background'] = roundValues( node.attributes['enable-background'] ); } if (node.attributes.viewBox != null) { node.attributes.viewBox = roundValues(node.attributes.viewBox); } if (node.attributes['stroke-dasharray'] != null) { node.attributes['stroke-dasharray'] = roundValues( node.attributes['stroke-dasharray'] ); } if (node.attributes.dx != null) { node.attributes.dx = roundValues(node.attributes.dx); } if (node.attributes.dy != null) { node.attributes.dy = roundValues(node.attributes.dy); } if (node.attributes.x != null) { node.attributes.x = roundValues(node.attributes.x); } if (node.attributes.y != null) { node.attributes.y = roundValues(node.attributes.y); } }, }, }; };