974 lines
34 KiB
JavaScript
974 lines
34 KiB
JavaScript
import fs from 'node:fs/promises';
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import path from 'node:path';
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import process from 'node:process';
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import {
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SVG_PATH_REGEX,
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getDirnameFromImportMeta,
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htmlFriendlyToTitle,
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collator,
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} from './sdk.mjs';
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import svgpath from 'svgpath';
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import svgPathBbox from 'svg-path-bbox';
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import parsePath from 'svg-path-segments';
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const __dirname = getDirnameFromImportMeta(import.meta.url);
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const dataFile = path.join(__dirname, '_data', 'simple-icons.json');
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const htmlNamedEntitiesFile = path.join(
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__dirname,
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'node_modules',
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'named-html-entities-json',
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'index.json',
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);
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const svglintIgnoredFile = path.join(__dirname, '.svglint-ignored.json');
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const data = JSON.parse(await fs.readFile(dataFile, 'utf8'));
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const htmlNamedEntities = JSON.parse(
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await fs.readFile(htmlNamedEntitiesFile, 'utf8'),
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);
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const svglintIgnores = JSON.parse(
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await fs.readFile(svglintIgnoredFile, 'utf8'),
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);
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const svgRegexp =
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/^<svg( [^\s]*=".*"){3}><title>.*<\/title><path d=".*"\/><\/svg>$/;
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const negativeZerosRegexp = /-0(?=[^\.]|[\s\d\w]|$)/g;
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const iconSize = 24;
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const iconTargetCenter = iconSize / 2;
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const iconFloatPrecision = 3;
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const iconMaxFloatPrecision = 5;
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const iconTolerance = 0.001;
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// set env SI_UPDATE_IGNORE to recreate the ignore file
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const updateIgnoreFile = process.env.SI_UPDATE_IGNORE === 'true';
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const ignoreFile = './.svglint-ignored.json';
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const iconIgnored = !updateIgnoreFile ? svglintIgnores : {};
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const sortObjectByKey = (obj) => {
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return Object.keys(obj)
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.sort()
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.reduce((r, k) => Object.assign(r, { [k]: obj[k] }), {});
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};
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const sortObjectByValue = (obj) => {
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return Object.keys(obj)
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.sort((a, b) => collator.compare(obj[a], obj[b]))
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.reduce((r, k) => Object.assign(r, { [k]: obj[k] }), {});
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};
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const removeLeadingZeros = (number) => {
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// convert 0.03 to '.03'
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return number.toString().replace(/^(-?)(0)(\.?.+)/, '$1$3');
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};
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/**
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* Given three points, returns if the middle one (x2, y2) is collinear
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* to the line formed by the two limit points.
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**/
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const collinear = (x1, y1, x2, y2, x3, y3) => {
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return x1 * (y2 - y3) + x2 * (y3 - y1) + x3 * (y1 - y2) === 0;
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};
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/**
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* Returns the number of digits after the decimal point.
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* @param num The number of interest.
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*/
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const countDecimals = (num) => {
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if (num && num % 1) {
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let [base, op, trail] = num.toExponential().split(/e([+-])/);
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let elen = parseInt(trail, 10);
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let idx = base.indexOf('.');
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return idx == -1
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? elen
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: base.length - idx - 1 + (op === '+' ? -elen : elen);
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}
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return 0;
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};
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/**
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* Get the index at which the first path value of an SVG starts.
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* @param svgFileContent The raw SVG as text.
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*/
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const getPathDIndex = (svgFileContent) => {
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const pathDStart = '<path d="';
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return svgFileContent.indexOf(pathDStart) + pathDStart.length;
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};
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/**
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* Get the index at which the text of the first `<title></title>` tag starts.
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* @param svgFileContent The raw SVG as text.
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**/
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const getTitleTextIndex = (svgFileContent) => {
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const titleStart = '<title>';
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return svgFileContent.indexOf(titleStart) + titleStart.length;
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};
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/**
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* Convert a hexadecimal number passed as string to decimal number as integer.
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* @param hex The hexadecimal number representation to convert.
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**/
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const hexadecimalToDecimal = (hex) => {
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let result = 0,
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digitValue;
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for (const digit of hex.toLowerCase()) {
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digitValue = '0123456789abcdefgh'.indexOf(digit);
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result = result * 16 + digitValue;
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}
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return result;
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};
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const maybeShortenedWithEllipsis = (str) => {
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return str.length > 20 ? `${str.substring(0, 20)}...` : str;
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};
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/**
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* Memoize a function which accepts a single argument.
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* A second argument can be passed to be used as key.
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*/
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const memoize = (func) => {
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const results = {};
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return (arg, defaultKey = null) => {
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const key = defaultKey || arg;
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if (!results[key]) {
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results[key] = func(arg);
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}
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return results[key];
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};
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};
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const getIconPath = memoize(($icon, filepath) => $icon.find('path').attr('d'));
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const getIconPathSegments = memoize((iconPath) => parsePath(iconPath));
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const getIconPathBbox = memoize((iconPath) => svgPathBbox(iconPath));
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if (updateIgnoreFile) {
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process.on('exit', async () => {
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// ensure object output order is consistent due to async svglint processing
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const sorted = sortObjectByKey(iconIgnored);
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for (const linterName in sorted) {
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sorted[linterName] = sortObjectByValue(sorted[linterName]);
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}
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await fs.writeFile(ignoreFile, JSON.stringify(sorted, null, 2) + '\n', {
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flag: 'w',
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});
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});
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}
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const isIgnored = (linterName, path) => {
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return (
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iconIgnored[linterName] && iconIgnored[linterName].hasOwnProperty(path)
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);
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};
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const ignoreIcon = (linterName, path, $) => {
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if (!iconIgnored[linterName]) {
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iconIgnored[linterName] = {};
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}
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const title = $.find('title').text();
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const iconName = htmlFriendlyToTitle(title);
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iconIgnored[linterName][path] = iconName;
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};
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export default {
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rules: {
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elm: {
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svg: 1,
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'svg > title': 1,
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'svg > path': 1,
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'*': false,
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},
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attr: [
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{
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// ensure that the SVG element has the appropriate attributes
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// alphabetically ordered
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role: 'img',
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viewBox: `0 0 ${iconSize} ${iconSize}`,
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xmlns: 'http://www.w3.org/2000/svg',
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'rule::selector': 'svg',
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'rule::whitelist': true,
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'rule::order': true,
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},
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{
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// ensure that the title element has the appropriate attribute
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'rule::selector': 'svg > title',
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'rule::whitelist': true,
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},
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{
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// ensure that the path element only has the 'd' attribute
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// (no style, opacity, etc.)
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d: SVG_PATH_REGEX,
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'rule::selector': 'svg > path',
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'rule::whitelist': true,
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},
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],
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custom: [
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(reporter, $, ast) => {
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reporter.name = 'icon-title';
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const iconTitleText = $.find('title').text(),
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xmlNamedEntitiesCodepoints = [38, 60, 62],
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xmlNamedEntities = ['amp', 'lt', 'gt'];
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let _validCodepointsRepr = true;
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// avoid character codepoints as hexadecimal representation
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const hexadecimalCodepoints = Array.from(
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iconTitleText.matchAll(/&#x([A-Fa-f0-9]+);/g),
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);
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if (hexadecimalCodepoints.length > 0) {
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_validCodepointsRepr = false;
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for (const match of hexadecimalCodepoints) {
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const charHexReprIndex =
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getTitleTextIndex(ast.source) + match.index + 1;
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const charDec = hexadecimalToDecimal(match[1]);
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let charRepr;
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if (xmlNamedEntitiesCodepoints.includes(charDec)) {
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charRepr = `&${
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xmlNamedEntities[xmlNamedEntitiesCodepoints.indexOf(charDec)]
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};`;
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} else if (charDec < 128) {
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charRepr = String.fromCodePoint(charDec);
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} else {
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charRepr = `&#${charDec};`;
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}
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reporter.error(
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'Hexadecimal representation of encoded character' +
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` "${match[0]}" found at index ${charHexReprIndex}:` +
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` replace it with "${charRepr}".`,
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);
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}
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}
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// avoid character codepoints as named entities
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const namedEntitiesCodepoints = Array.from(
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iconTitleText.matchAll(/&([A-Za-z0-9]+);/g),
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);
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if (namedEntitiesCodepoints.length > 0) {
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for (const match of namedEntitiesCodepoints) {
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const namedEntiyReprIndex =
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getTitleTextIndex(ast.source) + match.index + 1;
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if (!xmlNamedEntities.includes(match[1].toLowerCase())) {
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_validCodepointsRepr = false;
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const namedEntityJsRepr = htmlNamedEntities[match[1]];
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let replacement;
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if (
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namedEntityJsRepr === undefined ||
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namedEntityJsRepr.length != 1
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) {
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replacement = 'its decimal or literal representation';
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} else {
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const namedEntityDec = namedEntityJsRepr.codePointAt(0);
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if (namedEntityDec < 128) {
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replacement = `"${namedEntityJsRepr}"`;
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} else {
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replacement = `"&#${namedEntityDec};"`;
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}
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}
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reporter.error(
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'Named entity representation of encoded character' +
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` "${match[0]}" found at index ${namedEntiyReprIndex}.` +
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` Replace it with ${replacement}.`,
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);
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}
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}
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}
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if (_validCodepointsRepr) {
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// compare encoded title with original title and report error if not equal
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const encodingMatches = Array.from(
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iconTitleText.matchAll(/&(#([0-9]+)|(amp|quot|lt|gt));/g),
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),
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encodedBuf = [];
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const indexesToIgnore = [];
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for (const match of encodingMatches) {
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for (let r = match.index; r < match.index + match[0].length; r++) {
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indexesToIgnore.push(r);
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}
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}
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for (let i = iconTitleText.length - 1; i >= 0; i--) {
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if (indexesToIgnore.includes(i)) {
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encodedBuf.unshift(iconTitleText[i]);
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} else {
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// encode all non ascii characters plus "'&<> (XML named entities)
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let charDecimalCode = iconTitleText.charCodeAt(i);
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if (charDecimalCode > 127) {
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encodedBuf.unshift(`&#${charDecimalCode};`);
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} else if (xmlNamedEntitiesCodepoints.includes(charDecimalCode)) {
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encodedBuf.unshift(
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`&${
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xmlNamedEntities[
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xmlNamedEntitiesCodepoints.indexOf(charDecimalCode)
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]
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};`,
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);
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} else {
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encodedBuf.unshift(iconTitleText[i]);
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}
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}
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}
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const encodedIconTitleText = encodedBuf.join('');
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if (encodedIconTitleText !== iconTitleText) {
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_validCodepointsRepr = false;
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reporter.error(
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`Unencoded unicode characters found in title "${iconTitleText}":` +
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` rewrite it as "${encodedIconTitleText}".`,
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);
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}
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// check if there are some other encoded characters in decimal notation
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// which shouldn't be encoded
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for (const match of encodingMatches.filter((m) => !isNaN(m[2]))) {
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const decimalNumber = parseInt(match[2]);
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if (decimalNumber > 127) {
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continue;
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}
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_validCodepointsRepr = false;
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const decimalCodepointCharIndex =
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getTitleTextIndex(ast.source) + match.index + 1;
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if (xmlNamedEntitiesCodepoints.includes(decimalNumber)) {
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replacement = `"&${
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xmlNamedEntities[
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xmlNamedEntitiesCodepoints.indexOf(decimalNumber)
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]
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};"`;
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} else {
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replacement = String.fromCodePoint(decimalNumber);
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replacement = replacement == '"' ? `'"'` : `"${replacement}"`;
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}
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reporter.error(
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`Unnecessary encoded character "${match[0]}" found` +
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` at index ${decimalCodepointCharIndex}:` +
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` replace it with ${replacement}.`,
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);
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}
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if (_validCodepointsRepr) {
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const iconName = htmlFriendlyToTitle(iconTitleText);
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const iconExists = data.icons.some(
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(icon) => icon.title === iconName,
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);
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if (!iconExists) {
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reporter.error(
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`No icon with title "${iconName}" found in simple-icons.json`,
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);
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}
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}
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}
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},
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(reporter, $, ast, { filepath }) => {
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reporter.name = 'icon-size';
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const iconPath = getIconPath($, filepath);
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if (!updateIgnoreFile && isIgnored(reporter.name, iconPath)) {
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return;
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}
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const [minX, minY, maxX, maxY] = getIconPathBbox(iconPath);
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const width = +(maxX - minX).toFixed(iconFloatPrecision);
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const height = +(maxY - minY).toFixed(iconFloatPrecision);
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if (width === 0 && height === 0) {
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reporter.error(
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'Path bounds were reported as 0 x 0; check if the path is valid',
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);
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if (updateIgnoreFile) {
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ignoreIcon(reporter.name, iconPath, $);
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}
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} else if (width !== iconSize && height !== iconSize) {
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reporter.error(
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`Size of <path> must be exactly ${iconSize} in one dimension;` +
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` the size is currently ${width} x ${height}`,
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);
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if (updateIgnoreFile) {
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ignoreIcon(reporter.name, iconPath, $);
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}
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}
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},
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(reporter, $, ast, { filepath }) => {
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reporter.name = 'icon-precision';
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const iconPath = getIconPath($, filepath);
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const segments = getIconPathSegments(iconPath);
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for (const segment of segments) {
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const precisionMax = Math.max(
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...segment.params.slice(1).map(countDecimals),
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);
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if (precisionMax > iconMaxFloatPrecision) {
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let errorMsg =
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`found ${precisionMax} decimals in segment` +
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` "${iconPath.substring(segment.start, segment.end)}"`;
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if (segment.chained) {
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const readableChain = maybeShortenedWithEllipsis(
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iconPath.substring(segment.chainStart, segment.chainEnd),
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);
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errorMsg += ` of chain "${readableChain}"`;
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}
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errorMsg += ` at index ${
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segment.start + getPathDIndex(ast.source)
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}`;
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reporter.error(
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'Maximum precision should not be greater than' +
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` ${iconMaxFloatPrecision}; ${errorMsg}`,
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);
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}
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}
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},
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(reporter, $, ast, { filepath }) => {
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reporter.name = 'ineffective-segments';
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|
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const iconPath = getIconPath($, filepath);
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const segments = getIconPathSegments(iconPath);
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const absSegments = svgpath(iconPath).abs().unshort().segments;
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|
|
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const lowerMovementCommands = ['m', 'l'];
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const lowerDirectionCommands = ['h', 'v'];
|
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const lowerCurveCommand = 'c';
|
|
const lowerShorthandCurveCommand = 's';
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const lowerCurveCommands = [
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lowerCurveCommand,
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lowerShorthandCurveCommand,
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];
|
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const upperMovementCommands = ['M', 'L'];
|
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const upperHorDirectionCommand = 'H';
|
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const upperVerDirectionCommand = 'V';
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const upperDirectionCommands = [
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upperHorDirectionCommand,
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upperVerDirectionCommand,
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];
|
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const upperCurveCommand = 'C';
|
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const upperShorthandCurveCommand = 'S';
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const upperCurveCommands = [
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upperCurveCommand,
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upperShorthandCurveCommand,
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];
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const curveCommands = [...lowerCurveCommands, ...upperCurveCommands];
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const commands = [
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...lowerMovementCommands,
|
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...lowerDirectionCommands,
|
|
...upperMovementCommands,
|
|
...upperDirectionCommands,
|
|
...curveCommands,
|
|
];
|
|
const isInvalidSegment = (
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[command, x1Coord, y1Coord, ...rest],
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index,
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previousSegmentIsZ,
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) => {
|
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if (commands.includes(command)) {
|
|
// Relative directions (h or v) having a length of 0
|
|
if (lowerDirectionCommands.includes(command) && x1Coord === 0) {
|
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return true;
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|
}
|
|
// Relative movement (m or l) having a distance of 0
|
|
if (
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index > 0 &&
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lowerMovementCommands.includes(command) &&
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x1Coord === 0 &&
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y1Coord === 0
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) {
|
|
// When the path is closed (z), the new segment can start with
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// a relative placement (m) as if it were absolute (M)
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return command.toLowerCase() === 'm' ? !previousSegmentIsZ : true;
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}
|
|
if (
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lowerCurveCommands.includes(command) &&
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x1Coord === 0 &&
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y1Coord === 0
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) {
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const [x2Coord, y2Coord] = rest;
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|
if (
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// Relative shorthand curve (s) having a control point of 0
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command === lowerShorthandCurveCommand ||
|
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// Relative bézier curve (c) having control points of 0
|
|
(command === lowerCurveCommand &&
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x2Coord === 0 &&
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y2Coord === 0)
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) {
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return true;
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}
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}
|
|
if (index > 0) {
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let [yPrevCoord, xPrevCoord] = [
|
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...absSegments[index - 1],
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].reverse();
|
|
// If the previous command was a direction one,
|
|
// we need to iterate back until we find the missing coordinates
|
|
if (upperDirectionCommands.includes(xPrevCoord)) {
|
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xPrevCoord = undefined;
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yPrevCoord = undefined;
|
|
let idx = index;
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|
while (
|
|
--idx > 0 &&
|
|
(xPrevCoord === undefined || yPrevCoord === undefined)
|
|
) {
|
|
let [yPrevCoordDeep, xPrevCoordDeep] = [
|
|
...absSegments[idx],
|
|
].reverse();
|
|
// If the previous command was a horizontal movement,
|
|
// we need to consider the single coordinate as x
|
|
if (upperHorDirectionCommand === xPrevCoordDeep) {
|
|
xPrevCoordDeep = yPrevCoordDeep;
|
|
yPrevCoordDeep = undefined;
|
|
}
|
|
// If the previous command was a vertical movement,
|
|
// we need to consider the single coordinate as y
|
|
if (upperVerDirectionCommand === xPrevCoordDeep) {
|
|
xPrevCoordDeep = undefined;
|
|
}
|
|
if (
|
|
xPrevCoord === undefined &&
|
|
xPrevCoordDeep !== undefined
|
|
) {
|
|
xPrevCoord = xPrevCoordDeep;
|
|
}
|
|
if (
|
|
yPrevCoord === undefined &&
|
|
yPrevCoordDeep !== undefined
|
|
) {
|
|
yPrevCoord = yPrevCoordDeep;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (upperCurveCommands.includes(command)) {
|
|
const [x2Coord, y2Coord, xCoord, yCoord] = rest;
|
|
// Absolute shorthand curve (S) having
|
|
// the same coordinate as the previous segment
|
|
// and a control point equal to the ending point
|
|
if (
|
|
upperShorthandCurveCommand === command &&
|
|
x1Coord === xPrevCoord &&
|
|
y1Coord === yPrevCoord &&
|
|
x1Coord === x2Coord &&
|
|
y1Coord === y2Coord
|
|
) {
|
|
return true;
|
|
}
|
|
// Absolute bézier curve (C) having
|
|
// the same coordinate as the previous segment
|
|
// and last control point equal to the ending point
|
|
if (
|
|
upperCurveCommand === command &&
|
|
x1Coord === xPrevCoord &&
|
|
y1Coord === yPrevCoord &&
|
|
x2Coord === xCoord &&
|
|
y2Coord === yCoord
|
|
) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return (
|
|
// Absolute horizontal direction (H) having
|
|
// the same x coordinate as the previous segment
|
|
(upperHorDirectionCommand === command &&
|
|
x1Coord === xPrevCoord) ||
|
|
// Absolute vertical direction (V) having
|
|
// the same y coordinate as the previous segment
|
|
(upperVerDirectionCommand === command &&
|
|
x1Coord === yPrevCoord) ||
|
|
// Absolute movement (M or L) having the same
|
|
// coordinate as the previous segment
|
|
(upperMovementCommands.includes(command) &&
|
|
x1Coord === xPrevCoord &&
|
|
y1Coord === yPrevCoord)
|
|
);
|
|
}
|
|
}
|
|
};
|
|
|
|
for (let index = 0; index < segments.length; index++) {
|
|
const segment = segments[index];
|
|
const previousSegmentIsZ =
|
|
index > 0 && segments[index - 1].params[0].toLowerCase() === 'z';
|
|
|
|
if (isInvalidSegment(segment.params, index, previousSegmentIsZ)) {
|
|
const [command, x1, y1, ...rest] = segment.params;
|
|
|
|
let errorMsg = `Ineffective segment "${iconPath.substring(
|
|
segment.start,
|
|
segment.end,
|
|
)}" found`,
|
|
resolutionTip = 'should be removed';
|
|
|
|
if (curveCommands.includes(command)) {
|
|
const [x2, y2, x, y] = rest;
|
|
|
|
if (
|
|
command === lowerShorthandCurveCommand &&
|
|
(x2 !== 0 || y2 !== 0)
|
|
) {
|
|
resolutionTip = `should be "l${removeLeadingZeros(
|
|
x2,
|
|
)} ${removeLeadingZeros(y2)}" or removed`;
|
|
}
|
|
if (command === upperShorthandCurveCommand) {
|
|
resolutionTip = `should be "L${removeLeadingZeros(
|
|
x2,
|
|
)} ${removeLeadingZeros(y2)}" or removed`;
|
|
}
|
|
if (command === lowerCurveCommand && (x !== 0 || y !== 0)) {
|
|
resolutionTip = `should be "l${removeLeadingZeros(
|
|
x,
|
|
)} ${removeLeadingZeros(y)}" or removed`;
|
|
}
|
|
if (command === upperCurveCommand) {
|
|
resolutionTip = `should be "L${removeLeadingZeros(
|
|
x,
|
|
)} ${removeLeadingZeros(y)}" or removed`;
|
|
}
|
|
}
|
|
|
|
if (segment.chained) {
|
|
const readableChain = maybeShortenedWithEllipsis(
|
|
iconPath.substring(segment.chainStart, segment.chainEnd),
|
|
);
|
|
errorMsg += ` in chain "${readableChain}"`;
|
|
}
|
|
errorMsg += ` at index ${
|
|
segment.start + getPathDIndex(ast.source)
|
|
}`;
|
|
|
|
reporter.error(`${errorMsg} (${resolutionTip})`);
|
|
}
|
|
}
|
|
},
|
|
(reporter, $, ast, { filepath }) => {
|
|
reporter.name = 'collinear-segments';
|
|
|
|
/**
|
|
* Extracts collinear coordinates from SVG path straight lines
|
|
* (does not extracts collinear coordinates from curves).
|
|
**/
|
|
const getCollinearSegments = (iconPath) => {
|
|
const segments = getIconPathSegments(iconPath),
|
|
collinearSegments = [],
|
|
straightLineCommands = 'HhVvLlMm';
|
|
|
|
let currLine = [],
|
|
currAbsCoord = [undefined, undefined],
|
|
startPoint,
|
|
_inStraightLine = false,
|
|
_nextInStraightLine = false,
|
|
_resetStartPoint = false;
|
|
|
|
for (let s = 0; s < segments.length; s++) {
|
|
const seg = segments[s],
|
|
parms = seg.params,
|
|
cmd = parms[0],
|
|
nextCmd = s + 1 < segments.length ? segments[s + 1][0] : null;
|
|
|
|
switch (cmd) {
|
|
// Next switch cases have been ordered by frequency
|
|
// of occurrence in the SVG paths of the icons
|
|
case 'M':
|
|
currAbsCoord[0] = parms[1];
|
|
currAbsCoord[1] = parms[2];
|
|
// SVG 1.1:
|
|
// If a moveto is followed by multiple pairs of coordinates,
|
|
// the subsequent pairs are treated as implicit lineto commands.
|
|
if (!seg.chained || seg.chainStart === seg.start) {
|
|
startPoint = undefined;
|
|
}
|
|
break;
|
|
case 'm':
|
|
currAbsCoord[0] =
|
|
(!currAbsCoord[0] ? 0 : currAbsCoord[0]) + parms[1];
|
|
currAbsCoord[1] =
|
|
(!currAbsCoord[1] ? 0 : currAbsCoord[1]) + parms[2];
|
|
if (!seg.chained || seg.chainStart === seg.start) {
|
|
startPoint = undefined;
|
|
}
|
|
break;
|
|
case 'H':
|
|
currAbsCoord[0] = parms[1];
|
|
break;
|
|
case 'h':
|
|
currAbsCoord[0] =
|
|
(!currAbsCoord[0] ? 0 : currAbsCoord[0]) + parms[1];
|
|
break;
|
|
case 'V':
|
|
currAbsCoord[1] = parms[1];
|
|
break;
|
|
case 'v':
|
|
currAbsCoord[1] =
|
|
(!currAbsCoord[1] ? 0 : currAbsCoord[1]) + parms[1];
|
|
break;
|
|
case 'L':
|
|
currAbsCoord[0] = parms[1];
|
|
currAbsCoord[1] = parms[2];
|
|
break;
|
|
case 'l':
|
|
currAbsCoord[0] =
|
|
(!currAbsCoord[0] ? 0 : currAbsCoord[0]) + parms[1];
|
|
currAbsCoord[1] =
|
|
(!currAbsCoord[1] ? 0 : currAbsCoord[1]) + parms[2];
|
|
break;
|
|
case 'Z':
|
|
case 'z':
|
|
// TODO: Overlapping in Z should be handled in another rule
|
|
currAbsCoord = [startPoint[0], startPoint[1]];
|
|
_resetStartPoint = true;
|
|
break;
|
|
case 'C':
|
|
currAbsCoord[0] = parms[5];
|
|
currAbsCoord[1] = parms[6];
|
|
break;
|
|
case 'c':
|
|
currAbsCoord[0] =
|
|
(!currAbsCoord[0] ? 0 : currAbsCoord[0]) + parms[5];
|
|
currAbsCoord[1] =
|
|
(!currAbsCoord[1] ? 0 : currAbsCoord[1]) + parms[6];
|
|
break;
|
|
case 'A':
|
|
currAbsCoord[0] = parms[6];
|
|
currAbsCoord[1] = parms[7];
|
|
break;
|
|
case 'a':
|
|
currAbsCoord[0] =
|
|
(!currAbsCoord[0] ? 0 : currAbsCoord[0]) + parms[6];
|
|
currAbsCoord[1] =
|
|
(!currAbsCoord[1] ? 0 : currAbsCoord[1]) + parms[7];
|
|
break;
|
|
case 's':
|
|
currAbsCoord[0] =
|
|
(!currAbsCoord[0] ? 0 : currAbsCoord[0]) + parms[1];
|
|
currAbsCoord[1] =
|
|
(!currAbsCoord[1] ? 0 : currAbsCoord[1]) + parms[2];
|
|
break;
|
|
case 'S':
|
|
currAbsCoord[0] = parms[1];
|
|
currAbsCoord[1] = parms[2];
|
|
break;
|
|
case 't':
|
|
currAbsCoord[0] =
|
|
(!currAbsCoord[0] ? 0 : currAbsCoord[0]) + parms[1];
|
|
currAbsCoord[1] =
|
|
(!currAbsCoord[1] ? 0 : currAbsCoord[1]) + parms[2];
|
|
break;
|
|
case 'T':
|
|
currAbsCoord[0] = parms[1];
|
|
currAbsCoord[1] = parms[2];
|
|
break;
|
|
case 'Q':
|
|
currAbsCoord[0] = parms[3];
|
|
currAbsCoord[1] = parms[4];
|
|
break;
|
|
case 'q':
|
|
currAbsCoord[0] =
|
|
(!currAbsCoord[0] ? 0 : currAbsCoord[0]) + parms[3];
|
|
currAbsCoord[1] =
|
|
(!currAbsCoord[1] ? 0 : currAbsCoord[1]) + parms[4];
|
|
break;
|
|
default:
|
|
throw new Error(`"${cmd}" command not handled`);
|
|
}
|
|
|
|
if (startPoint === undefined) {
|
|
startPoint = [currAbsCoord[0], currAbsCoord[1]];
|
|
} else if (_resetStartPoint) {
|
|
startPoint = undefined;
|
|
_resetStartPoint = false;
|
|
}
|
|
|
|
_nextInStraightLine = straightLineCommands.includes(nextCmd);
|
|
let _exitingStraightLine = _inStraightLine && !_nextInStraightLine;
|
|
_inStraightLine = straightLineCommands.includes(cmd);
|
|
|
|
if (_inStraightLine) {
|
|
currLine.push([currAbsCoord[0], currAbsCoord[1]]);
|
|
} else {
|
|
if (_exitingStraightLine) {
|
|
if (straightLineCommands.includes(cmd)) {
|
|
currLine.push([currAbsCoord[0], currAbsCoord[1]]);
|
|
}
|
|
// Get collinear coordinates
|
|
for (let p = 1; p < currLine.length - 1; p++) {
|
|
let _collinearCoord = collinear(
|
|
currLine[p - 1][0],
|
|
currLine[p - 1][1],
|
|
currLine[p][0],
|
|
currLine[p][1],
|
|
currLine[p + 1][0],
|
|
currLine[p + 1][1],
|
|
);
|
|
if (_collinearCoord) {
|
|
collinearSegments.push(
|
|
segments[s - currLine.length + p + 1],
|
|
);
|
|
}
|
|
}
|
|
}
|
|
currLine = [];
|
|
}
|
|
}
|
|
|
|
return collinearSegments;
|
|
};
|
|
|
|
const iconPath = getIconPath($, filepath),
|
|
collinearSegments = getCollinearSegments(iconPath);
|
|
if (collinearSegments.length === 0) {
|
|
return;
|
|
}
|
|
const pathDIndex = getPathDIndex(ast.source);
|
|
for (const segment of collinearSegments) {
|
|
let errorMsg = `Collinear segment "${iconPath.substring(
|
|
segment.start,
|
|
segment.end,
|
|
)}" found`;
|
|
if (segment.chained) {
|
|
let readableChain = maybeShortenedWithEllipsis(
|
|
iconPath.substring(segment.chainStart, segment.chainEnd),
|
|
);
|
|
errorMsg += ` in chain "${readableChain}"`;
|
|
}
|
|
errorMsg += ` at index ${
|
|
segment.start + pathDIndex
|
|
} (should be removed)`;
|
|
reporter.error(errorMsg);
|
|
}
|
|
},
|
|
(reporter, $, ast) => {
|
|
reporter.name = 'extraneous';
|
|
|
|
if (!svgRegexp.test(ast.source)) {
|
|
if (ast.source.includes('\n') || ast.source.includes('\r')) {
|
|
reporter.error(
|
|
'Unexpected newline character(s) detected in SVG markup',
|
|
);
|
|
} else {
|
|
reporter.error(
|
|
'Unexpected character(s), most likely extraneous' +
|
|
' whitespace, detected in SVG markup',
|
|
);
|
|
}
|
|
}
|
|
},
|
|
(reporter, $, ast, { filepath }) => {
|
|
reporter.name = 'negative-zeros';
|
|
|
|
const iconPath = getIconPath($, filepath);
|
|
|
|
// Find negative zeros inside path
|
|
const negativeZeroMatches = Array.from(
|
|
iconPath.matchAll(negativeZerosRegexp),
|
|
);
|
|
if (negativeZeroMatches.length) {
|
|
// Calculate the index for each match in the file
|
|
const pathDIndex = getPathDIndex(ast.source);
|
|
|
|
for (const match of negativeZeroMatches) {
|
|
const negativeZeroFileIndex = match.index + pathDIndex;
|
|
const previousChar = ast.source[negativeZeroFileIndex - 1];
|
|
const replacement = '0123456789'.includes(previousChar)
|
|
? ' 0'
|
|
: '0';
|
|
reporter.error(
|
|
`Found "-0" at index ${negativeZeroFileIndex} (should` +
|
|
` be "${replacement}")`,
|
|
);
|
|
}
|
|
}
|
|
},
|
|
(reporter, $, ast, { filepath }) => {
|
|
reporter.name = 'icon-centered';
|
|
|
|
const iconPath = getIconPath($, filepath);
|
|
if (!updateIgnoreFile && isIgnored(reporter.name, iconPath)) {
|
|
return;
|
|
}
|
|
|
|
const [minX, minY, maxX, maxY] = getIconPathBbox(iconPath);
|
|
const centerX = +((minX + maxX) / 2).toFixed(iconFloatPrecision);
|
|
const devianceX = centerX - iconTargetCenter;
|
|
const centerY = +((minY + maxY) / 2).toFixed(iconFloatPrecision);
|
|
const devianceY = centerY - iconTargetCenter;
|
|
|
|
if (
|
|
Math.abs(devianceX) > iconTolerance ||
|
|
Math.abs(devianceY) > iconTolerance
|
|
) {
|
|
reporter.error(
|
|
`<path> must be centered at (${iconTargetCenter}, ${iconTargetCenter});` +
|
|
` the center is currently (${centerX}, ${centerY})`,
|
|
);
|
|
if (updateIgnoreFile) {
|
|
ignoreIcon(reporter.name, iconPath, $);
|
|
}
|
|
}
|
|
},
|
|
(reporter, $, ast, { filepath }) => {
|
|
reporter.name = 'path-format';
|
|
|
|
const iconPath = getIconPath($, filepath);
|
|
|
|
if (!SVG_PATH_REGEX.test(iconPath)) {
|
|
let errorMsg = 'Invalid path format',
|
|
reason;
|
|
|
|
if (!iconPath.startsWith('M') && !iconPath.startsWith('m')) {
|
|
// doesn't start with moveto
|
|
reason =
|
|
'should start with "moveto" command ("M" or "m"),' +
|
|
` but starts with \"${iconPath[0]}\"`;
|
|
reporter.error(`${errorMsg}: ${reason}`);
|
|
}
|
|
|
|
const validPathCharacters = SVG_PATH_REGEX.source.replace(
|
|
/[\[\]+^$]/g,
|
|
'',
|
|
),
|
|
invalidCharactersMsgs = [],
|
|
pathDIndex = getPathDIndex(ast.source);
|
|
|
|
for (let [i, char] of Object.entries(iconPath)) {
|
|
if (validPathCharacters.indexOf(char) === -1) {
|
|
invalidCharactersMsgs.push(
|
|
`"${char}" at index ${pathDIndex + parseInt(i)}`,
|
|
);
|
|
}
|
|
}
|
|
|
|
// contains invalid characters
|
|
if (invalidCharactersMsgs.length > 0) {
|
|
reason = `unexpected character${
|
|
invalidCharactersMsgs.length > 1 ? 's' : ''
|
|
} found (${invalidCharactersMsgs.join(', ')})`;
|
|
reporter.error(`${errorMsg}: ${reason}`);
|
|
}
|
|
}
|
|
},
|
|
(reporter, $, ast) => {
|
|
reporter.name = 'svg-format';
|
|
|
|
// Don't allow explicit '</path>' closing tag
|
|
if (ast.source.includes('</path>')) {
|
|
const reason =
|
|
`found a closing "path" tag at index ${ast.source.indexOf(
|
|
'</path>',
|
|
)}. The path should be self-closing,` +
|
|
' use "/>" instead of "></path>".';
|
|
reporter.error(`Invalid SVG content format: ${reason}`);
|
|
}
|
|
},
|
|
],
|
|
},
|
|
};
|