import fs from 'node:fs'; import path from 'node:path'; import { getDirnameFromImportMeta, htmlFriendlyToTitle, } from './scripts/utils.js'; import svgpath from 'svgpath'; import svgPathBbox from 'svg-path-bbox'; import parsePath from 'svg-path-segments'; const __dirname = getDirnameFromImportMeta(import.meta.url); const dataFile = path.join(__dirname, '_data', 'simple-icons.json'); const htmlNamedEntitiesFile = path.join( __dirname, 'node_modules', 'named-html-entities-json', 'index.json', ); const svglintIgnoredFile = path.join(__dirname, '.svglint-ignored.json'); const data = JSON.parse(fs.readFileSync(dataFile, 'utf8')); const htmlNamedEntities = JSON.parse( fs.readFileSync(htmlNamedEntitiesFile, 'utf8'), ); const svglintIgnores = JSON.parse(fs.readFileSync(svglintIgnoredFile, 'utf8')); const svgRegexp = /^.*<\/title><path d=".*"\/><\/svg>\n?$/; const negativeZerosRegexp = /-0(?=[^\.]|[\s\d\w]|$)/g; const iconSize = 24; const iconFloatPrecision = 3; const iconMaxFloatPrecision = 5; const iconTolerance = 0.001; // set env SI_UPDATE_IGNORE to recreate the ignore file const updateIgnoreFile = process.env.SI_UPDATE_IGNORE === 'true'; const ignoreFile = './.svglint-ignored.json'; const iconIgnored = !updateIgnoreFile ? svglintIgnores : {}; const sortObjectByKey = (obj) => { return Object.keys(obj) .sort() .reduce((r, k) => Object.assign(r, { [k]: obj[k] }), {}); }; const sortObjectByValue = (obj) => { return Object.keys(obj) .sort((a, b) => ('' + obj[a]).localeCompare(obj[b])) .reduce((r, k) => Object.assign(r, { [k]: obj[k] }), {}); }; const removeLeadingZeros = (number) => { // convert 0.03 to '.03' return number.toString().replace(/^(-?)(0)(\.?.+)/, '$1$3'); }; /** * Given three points, returns if the middle one (x2, y2) is collinear * to the line formed by the two limit points. **/ const collinear = (x1, y1, x2, y2, x3, y3) => { return x1 * (y2 - y3) + x2 * (y3 - y1) + x3 * (y1 - y2) === 0; }; /** * Returns the number of digits after the decimal point. * @param num The number of interest. */ const countDecimals = (num) => { if (num && num % 1) { let [base, op, trail] = num.toExponential().split(/e([+-])/); let elen = parseInt(trail, 10); let idx = base.indexOf('.'); return idx == -1 ? elen : base.length - idx - 1 + (op === '+' ? -elen : elen); } return 0; }; /** * Get the index at which the first path value of an SVG starts. * @param svgFileContent The raw SVG as text. */ const getPathDIndex = (svgFileContent) => { const pathDStart = '<path d="'; return svgFileContent.indexOf(pathDStart) + pathDStart.length; }; /** * Get the index at which the text of the first `<title>` tag starts. * @param svgFileContent The raw SVG as text. **/ const getTitleTextIndex = (svgFileContent) => { const titleStart = ''; return svgFileContent.indexOf(titleStart) + titleStart.length; }; /** * Convert a hexadecimal number passed as string to decimal number as integer. * @param hex The hexadecimal number representation to convert. **/ const hexadecimalToDecimal = (hex) => { let result = 0, digitValue; hex = hex.toLowerCase(); for (var i = 0; i < hex.length; i++) { digitValue = '0123456789abcdefgh'.indexOf(hex[i]); result = result * 16 + digitValue; } return result; }; if (updateIgnoreFile) { process.on('exit', () => { // ensure object output order is consistent due to async svglint processing const sorted = sortObjectByKey(iconIgnored); for (const linterName in sorted) { sorted[linterName] = sortObjectByValue(sorted[linterName]); } fs.writeFileSync(ignoreFile, JSON.stringify(sorted, null, 2) + '\n', { flag: 'w', }); }); } const isIgnored = (linterName, path) => { return ( iconIgnored[linterName] && iconIgnored[linterName].hasOwnProperty(path) ); }; const ignoreIcon = (linterName, path, $) => { if (!iconIgnored[linterName]) { iconIgnored[linterName] = {}; } const title = $.find('title').text(); const iconName = htmlFriendlyToTitle(title); iconIgnored[linterName][path] = iconName; }; export default { rules: { elm: { svg: 1, 'svg > title': 1, 'svg > path': 1, '*': false, }, attr: [ { // ensure that the SVG elm has the appropriate attrs alphabetically ordered role: 'img', viewBox: `0 0 ${iconSize} ${iconSize}`, xmlns: 'http://www.w3.org/2000/svg', 'rule::selector': 'svg', 'rule::whitelist': true, 'rule::order': true, }, { // ensure that the title elm has the appropriate attr 'rule::selector': 'svg > title', 'rule::whitelist': true, }, { // ensure that the path element only has the 'd' attr (no style, opacity, etc.) d: /^[,a-zA-Z0-9\. -]+$/, 'rule::selector': 'svg > path', 'rule::whitelist': true, }, ], custom: [ (reporter, $, ast) => { reporter.name = 'icon-title'; const iconTitleText = $.find('title').text(), xmlNamedEntitiesCodepoints = [38, 60, 62], xmlNamedEntities = ['amp', 'lt', 'gt']; let _validCodepointsRepr = true; // avoid character codepoints as hexadecimal representation const hexadecimalCodepoints = Array.from( iconTitleText.matchAll(/&#x([A-Fa-f0-9]+);/g), ); if (hexadecimalCodepoints.length > 0) { _validCodepointsRepr = false; hexadecimalCodepoints.forEach((match) => { const charHexReprIndex = getTitleTextIndex(ast.source) + match.index + 1; const charDec = hexadecimalToDecimal(match[1]); let charRepr; if (xmlNamedEntitiesCodepoints.includes(charDec)) { charRepr = `&${ xmlNamedEntities[xmlNamedEntitiesCodepoints.indexOf(charDec)] };`; } else if (charDec < 128) { charRepr = String.fromCodePoint(charDec); } else { charRepr = `&#${charDec};`; } reporter.error( `Hexadecimal representation of encoded character "${match[0]}" found at index ${charHexReprIndex}:` + ` replace it with "${charRepr}".`, ); }); } // avoid character codepoints as named entities const namedEntitiesCodepoints = Array.from( iconTitleText.matchAll(/&([A-Za-z0-9]+);/g), ); if (namedEntitiesCodepoints.length > 0) { namedEntitiesCodepoints.forEach((match) => { const namedEntiyReprIndex = getTitleTextIndex(ast.source) + match.index + 1; if (!xmlNamedEntities.includes(match[1].toLowerCase())) { _validCodepointsRepr = false; const namedEntityJsRepr = htmlNamedEntities[match[1]]; let replacement; if ( namedEntityJsRepr === undefined || namedEntityJsRepr.length != 1 ) { replacement = 'its decimal or literal representation'; } else { const namedEntityDec = namedEntityJsRepr.codePointAt(0); if (namedEntityDec < 128) { replacement = `"${namedEntityJsRepr}"`; } else { replacement = `"&#${namedEntityDec};"`; } } reporter.error( `Named entity representation of encoded character "${match[0]}" found at index ${namedEntiyReprIndex}.` + ` Replace it with ${replacement}.`, ); } }); } if (_validCodepointsRepr) { // compare encoded title with original title and report error if not equal const encodingMatches = Array.from( iconTitleText.matchAll(/&(#([0-9]+)|(amp|quot|lt|gt));/g), ), encodedBuf = []; const _indexesToIgnore = []; for (let m = 0; m < encodingMatches.length; m++) { let index = encodingMatches[m].index; for (let r = index; r < index + encodingMatches[m][0].length; r++) { _indexesToIgnore.push(r); } } for (let i = iconTitleText.length - 1; i >= 0; i--) { if (_indexesToIgnore.includes(i)) { encodedBuf.unshift(iconTitleText[i]); } else { // encode all non ascii characters plus "'&<> (XML named entities) let charDecimalCode = iconTitleText.charCodeAt(i); if (charDecimalCode > 127) { encodedBuf.unshift(`&#${charDecimalCode};`); } else if (xmlNamedEntitiesCodepoints.includes(charDecimalCode)) { encodedBuf.unshift( `&${ xmlNamedEntities[ xmlNamedEntitiesCodepoints.indexOf(charDecimalCode) ] };`, ); } else { encodedBuf.unshift(iconTitleText[i]); } } } const encodedIconTitleText = encodedBuf.join(''); if (encodedIconTitleText !== iconTitleText) { _validCodepointsRepr = false; reporter.error( `Unencoded unicode characters found in title "${iconTitleText}":` + ` rewrite it as "${encodedIconTitleText}".`, ); } // check if there are some other encoded characters in decimal notation // which shouldn't be encoded encodingMatches .filter((m) => !isNaN(m[2])) .forEach((match) => { const decimalNumber = parseInt(match[2]); if (decimalNumber < 128) { _validCodepointsRepr = false; const decimalCodepointCharIndex = getTitleTextIndex(ast.source) + match.index + 1; if (xmlNamedEntitiesCodepoints.includes(decimalNumber)) { replacement = `"&${ xmlNamedEntities[ xmlNamedEntitiesCodepoints.indexOf(decimalNumber) ] };"`; } else { replacement = String.fromCharCode(decimalNumber); replacement = replacement == '"' ? `'"'` : `"${replacement}"`; } reporter.error( `Unnecessary encoded character "${match[0]}" found at index ${decimalCodepointCharIndex}:` + ` replace it with ${replacement}.`, ); } }); if (_validCodepointsRepr) { const iconName = htmlFriendlyToTitle(iconTitleText); const iconExists = data.icons.some( (icon) => icon.title === iconName, ); if (!iconExists) { reporter.error( `No icon with title "${iconName}" found in simple-icons.json`, ); } } } }, (reporter, $, ast) => { reporter.name = 'icon-size'; const iconPath = $.find('path').attr('d'); if (!updateIgnoreFile && isIgnored(reporter.name, iconPath)) { return; } const [minX, minY, maxX, maxY] = svgPathBbox(iconPath); const width = +(maxX - minX).toFixed(iconFloatPrecision); const height = +(maxY - minY).toFixed(iconFloatPrecision); if (width === 0 && height === 0) { reporter.error( 'Path bounds were reported as 0 x 0; check if the path is valid', ); if (updateIgnoreFile) { ignoreIcon(reporter.name, iconPath, $); } } else if (width !== iconSize && height !== iconSize) { reporter.error( `Size of <path> must be exactly ${iconSize} in one dimension; the size is currently ${width} x ${height}`, ); if (updateIgnoreFile) { ignoreIcon(reporter.name, iconPath, $); } } }, (reporter, $, ast) => { reporter.name = 'icon-precision'; const iconPath = $.find('path').attr('d'); if (!updateIgnoreFile && isIgnored(reporter.name, iconPath)) { return; } const segments = parsePath(iconPath), svgFileContent = $.html(); segments.forEach((segment) => { const precisionMax = Math.max( ...segment.params.slice(1).map(countDecimals), ); if (precisionMax > iconMaxFloatPrecision) { let errorMsg = `found ${precisionMax} decimals in segment "${iconPath.substring( segment.start, segment.end, )}"`; if (segment.chained) { let readableChain = iconPath.substring( segment.chainStart, segment.chainEnd, ); if (readableChain.length > 20) { readableChain = `${readableChain.substring(0, 20)}...`; } errorMsg += ` of chain "${readableChain}"`; } errorMsg += ` at index ${ segment.start + getPathDIndex(svgFileContent) }`; reporter.error( `Maximum precision should not be greater than ${iconMaxFloatPrecision}; ${errorMsg}`, ); if (updateIgnoreFile) { ignoreIcon(reporter.name, iconPath, $); } } }); }, (reporter, $, ast) => { reporter.name = 'ineffective-segments'; const iconPath = $.find('path').attr('d'); if (!updateIgnoreFile && isIgnored(reporter.name, iconPath)) { return; } const segments = parsePath(iconPath); const absSegments = svgpath(iconPath).abs().unshort().segments; const lowerMovementCommands = ['m', 'l']; const lowerDirectionCommands = ['h', 'v']; const lowerCurveCommand = 'c'; const lowerShorthandCurveCommand = 's'; const lowerCurveCommands = [ lowerCurveCommand, lowerShorthandCurveCommand, ]; const upperMovementCommands = ['M', 'L']; const upperHorDirectionCommand = 'H'; const upperVerDirectionCommand = 'V'; const upperDirectionCommands = [ upperHorDirectionCommand, upperVerDirectionCommand, ]; const upperCurveCommand = 'C'; const upperShorthandCurveCommand = 'S'; const upperCurveCommands = [ upperCurveCommand, upperShorthandCurveCommand, ]; const curveCommands = [...lowerCurveCommands, ...upperCurveCommands]; const commands = [ ...lowerMovementCommands, ...lowerDirectionCommands, ...upperMovementCommands, ...upperDirectionCommands, ...curveCommands, ]; const isInvalidSegment = ( [command, x1Coord, y1Coord, ...rest], index, ) => { if (commands.includes(command)) { // Relative directions (h or v) having a length of 0 if (lowerDirectionCommands.includes(command) && x1Coord === 0) { return true; } // Relative movement (m or l) having a distance of 0 if ( index > 0 && lowerMovementCommands.includes(command) && x1Coord === 0 && y1Coord === 0 ) { return true; } if ( lowerCurveCommands.includes(command) && x1Coord === 0 && y1Coord === 0 ) { const [x2Coord, y2Coord] = rest; if ( // Relative shorthand curve (s) having a control point of 0 command === lowerShorthandCurveCommand || // Relative bézier curve (c) having control points of 0 (command === lowerCurveCommand && x2Coord === 0 && y2Coord === 0) ) { return true; } } if (index > 0) { let [yPrevCoord, xPrevCoord] = [ ...absSegments[index - 1], ].reverse(); // If the previous command was a direction one, we need to iterate back until we find the missing coordinates if (upperDirectionCommands.includes(xPrevCoord)) { xPrevCoord = undefined; yPrevCoord = undefined; let idx = index; 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) ); } } }; const svgFileContent = $.html(); segments.forEach((segment, index) => { if (isInvalidSegment(segment.params, index)) { const [command, x1, y1, ...rest] = segment.params; let errorMsg = `Innefective segment "${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, )} ${removeLeadingZeros(y)}" or removed`; } } if (segment.chained) { let readableChain = iconPath.substring( segment.chainStart, segment.chainEnd, ); if (readableChain.length > 20) { readableChain = `${readableChain.substring(0, 20)}...`; } errorMsg += ` in chain "${readableChain}"`; } errorMsg += ` at index ${ segment.start + getPathDIndex(svgFileContent) }`; reporter.error(`${errorMsg} (${resolutionTip})`); if (updateIgnoreFile) { ignoreIcon(reporter.name, iconPath, $); } } }); }, (reporter, $, ast) => { reporter.name = 'collinear-segments'; const iconPath = $.find('path').attr('d'); if (!updateIgnoreFile && isIgnored(reporter.name, iconPath)) { return; } /** * Extracts collinear coordinates from SVG path straight lines * (does not extracts collinear coordinates from curves). **/ const getCollinearSegments = (iconPath) => { const segments = parsePath(iconPath), collinearSegments = [], straightLineCommands = 'HhVvLlMm', zCommands = 'Zz'; let currLine = [], currAbsCoord = [undefined, undefined], startPoint, _inStraightLine = false, _nextInStraightLine = false, _resetStartPoint = false; for (let s = 0; s < segments.length; s++) { let seg = segments[s].params, cmd = seg[0], nextCmd = s + 1 < segments.length ? segments[s + 1][0] : null; if (cmd === 'L') { currAbsCoord[0] = seg[1]; currAbsCoord[1] = seg[2]; } else if (cmd === 'l') { currAbsCoord[0] = (!currAbsCoord[0] ? 0 : currAbsCoord[0]) + seg[1]; currAbsCoord[1] = (!currAbsCoord[1] ? 0 : currAbsCoord[1]) + seg[2]; } else if (cmd === 'm') { currAbsCoord[0] = (!currAbsCoord[0] ? 0 : currAbsCoord[0]) + seg[1]; currAbsCoord[1] = (!currAbsCoord[1] ? 0 : currAbsCoord[1]) + seg[2]; startPoint = undefined; } else if (cmd === 'M') { currAbsCoord[0] = seg[1]; currAbsCoord[1] = seg[2]; startPoint = undefined; } else if (cmd === 'H') { currAbsCoord[0] = seg[1]; } else if (cmd === 'h') { currAbsCoord[0] = (!currAbsCoord[0] ? 0 : currAbsCoord[0]) + seg[1]; } else if (cmd === 'V') { currAbsCoord[1] = seg[1]; } else if (cmd === 'v') { currAbsCoord[1] = (!currAbsCoord[1] ? 0 : currAbsCoord[1]) + seg[1]; } else if (cmd === 'C') { currAbsCoord[0] = seg[5]; currAbsCoord[1] = seg[6]; } else if (cmd === 'a') { currAbsCoord[0] = (!currAbsCoord[0] ? 0 : currAbsCoord[0]) + seg[6]; currAbsCoord[1] = (!currAbsCoord[1] ? 0 : currAbsCoord[1]) + seg[7]; } else if (cmd === 'A') { currAbsCoord[0] = seg[6]; currAbsCoord[1] = seg[7]; } else if (cmd === 's') { currAbsCoord[0] = (!currAbsCoord[0] ? 0 : currAbsCoord[0]) + seg[1]; currAbsCoord[1] = (!currAbsCoord[1] ? 0 : currAbsCoord[1]) + seg[2]; } else if (cmd === 'S') { currAbsCoord[0] = seg[1]; currAbsCoord[1] = seg[2]; } else if (cmd === 't') { currAbsCoord[0] = (!currAbsCoord[0] ? 0 : currAbsCoord[0]) + seg[1]; currAbsCoord[1] = (!currAbsCoord[1] ? 0 : currAbsCoord[1]) + seg[2]; } else if (cmd === 'T') { currAbsCoord[0] = seg[1]; currAbsCoord[1] = seg[2]; } else if (cmd === 'c') { currAbsCoord[0] = (!currAbsCoord[0] ? 0 : currAbsCoord[0]) + seg[5]; currAbsCoord[1] = (!currAbsCoord[1] ? 0 : currAbsCoord[1]) + seg[6]; } else if (cmd === 'Q') { currAbsCoord[0] = seg[3]; currAbsCoord[1] = seg[4]; } else if (cmd === 'q') { currAbsCoord[0] = (!currAbsCoord[0] ? 0 : currAbsCoord[0]) + seg[3]; currAbsCoord[1] = (!currAbsCoord[1] ? 0 : currAbsCoord[1]) + seg[4]; } else if (zCommands.includes(cmd)) { // Overlapping in Z should be handled in another rule currAbsCoord = [startPoint[0], startPoint[1]]; _resetStartPoint = true; } else { 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 collinearSegments = getCollinearSegments(iconPath), pathDIndex = getPathDIndex($.html()); collinearSegments.forEach((segment) => { let errorMsg = `Collinear segment "${iconPath.substring( segment.start, segment.end, )}" found`; if (segment.chained) { let readableChain = iconPath.substring( segment.chainStart, segment.chainEnd, ); if (readableChain.length > 20) { readableChain = `${readableChain.substring(0, 20)}...`; } errorMsg += ` in chain "${readableChain}"`; } errorMsg += ` at index ${ segment.start + pathDIndex } (should be removed)`; reporter.error(errorMsg); }); if (collinearSegments.length) { if (updateIgnoreFile) { ignoreIcon(reporter.name, iconPath, $); } } }, (reporter, $, ast) => { reporter.name = 'extraneous'; if (!svgRegexp.test(ast.source)) { reporter.error( 'Unexpected character(s), most likely extraneous whitespace, detected in SVG markup', ); } }, (reporter, $, ast) => { reporter.name = 'negative-zeros'; const iconPath = $.find('path').attr('d'); if (!updateIgnoreFile && isIgnored(reporter.name, iconPath)) { return; } // 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 svgFileContent = $.html(); const pathDIndex = getPathDIndex(svgFileContent); negativeZeroMatches.forEach((match) => { const negativeZeroFileIndex = match.index + pathDIndex; const previousChar = svgFileContent[negativeZeroFileIndex - 1]; const replacement = '0123456789'.includes(previousChar) ? ' 0' : '0'; reporter.error( `Found "-0" at index ${negativeZeroFileIndex} (should be "${replacement}")`, ); }); } }, (reporter, $, ast) => { reporter.name = 'icon-centered'; const iconPath = $.find('path').attr('d'); if (!updateIgnoreFile && isIgnored(reporter.name, iconPath)) { return; } const [minX, minY, maxX, maxY] = svgPathBbox(iconPath); const targetCenter = iconSize / 2; const centerX = +((minX + maxX) / 2).toFixed(iconFloatPrecision); const devianceX = centerX - targetCenter; const centerY = +((minY + maxY) / 2).toFixed(iconFloatPrecision); const devianceY = centerY - targetCenter; if ( Math.abs(devianceX) > iconTolerance || Math.abs(devianceY) > iconTolerance ) { reporter.error( `<path> must be centered at (${targetCenter}, ${targetCenter}); the center is currently (${centerX}, ${centerY})`, ); if (updateIgnoreFile) { ignoreIcon(reporter.name, iconPath, $); } } }, (reporter, $, ast) => { reporter.name = 'path-format'; const iconPath = $.find('path').attr('d'); const validPathFormatRegex = /^[Mm][MmZzLlHhVvCcSsQqTtAaEe0-9-,.\s]+$/; if (!validPathFormatRegex.test(iconPath)) { let errorMsg = 'Invalid path format', reason; if (!/^[Mm]/.test(iconPath)) { // doesn't start with moveto reason = `should start with \"moveto\" command (\"M\" or \"m\"), but starts with \"${iconPath[0]}\"`; reporter.error(`${errorMsg}: ${reason}`); } const validPathCharacters = 'MmZzLlHhVvCcSsQqTtAaEe0123456789-,. ', invalidCharactersMsgs = [], pathDIndex = getPathDIndex($.html()); 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`; reason += ` (${invalidCharactersMsgs.join(', ')})`; reporter.error(`${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}`); } }, ], }, };