230 lines
No EOL
6.3 KiB
JavaScript
Executable file
230 lines
No EOL
6.3 KiB
JavaScript
Executable file
import { TAG_ID as $, NS, ATTRS, getTagID } from './html.js';
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//MIME types
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const MIME_TYPES = {
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TEXT_HTML: 'text/html',
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APPLICATION_XML: 'application/xhtml+xml',
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};
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//Attributes
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const DEFINITION_URL_ATTR = 'definitionurl';
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const ADJUSTED_DEFINITION_URL_ATTR = 'definitionURL';
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const SVG_ATTRS_ADJUSTMENT_MAP = new Map([
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'attributeName',
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'attributeType',
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'baseFrequency',
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'baseProfile',
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'calcMode',
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'clipPathUnits',
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'diffuseConstant',
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'edgeMode',
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'filterUnits',
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'glyphRef',
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'gradientTransform',
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'gradientUnits',
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'kernelMatrix',
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'kernelUnitLength',
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'keyPoints',
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'keySplines',
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'keyTimes',
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'lengthAdjust',
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'limitingConeAngle',
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'markerHeight',
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'markerUnits',
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'markerWidth',
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'maskContentUnits',
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'maskUnits',
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'numOctaves',
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'pathLength',
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'patternContentUnits',
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'patternTransform',
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'patternUnits',
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'pointsAtX',
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'pointsAtY',
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'pointsAtZ',
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'preserveAlpha',
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'preserveAspectRatio',
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'primitiveUnits',
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'refX',
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'refY',
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'repeatCount',
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'repeatDur',
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'requiredExtensions',
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'requiredFeatures',
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'specularConstant',
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'specularExponent',
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'spreadMethod',
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'startOffset',
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'stdDeviation',
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'stitchTiles',
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'surfaceScale',
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'systemLanguage',
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'tableValues',
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'targetX',
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'targetY',
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'textLength',
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'viewBox',
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'viewTarget',
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'xChannelSelector',
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'yChannelSelector',
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'zoomAndPan',
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].map((attr) => [attr.toLowerCase(), attr]));
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const XML_ATTRS_ADJUSTMENT_MAP = new Map([
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['xlink:actuate', { prefix: 'xlink', name: 'actuate', namespace: NS.XLINK }],
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['xlink:arcrole', { prefix: 'xlink', name: 'arcrole', namespace: NS.XLINK }],
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['xlink:href', { prefix: 'xlink', name: 'href', namespace: NS.XLINK }],
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['xlink:role', { prefix: 'xlink', name: 'role', namespace: NS.XLINK }],
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['xlink:show', { prefix: 'xlink', name: 'show', namespace: NS.XLINK }],
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['xlink:title', { prefix: 'xlink', name: 'title', namespace: NS.XLINK }],
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['xlink:type', { prefix: 'xlink', name: 'type', namespace: NS.XLINK }],
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['xml:base', { prefix: 'xml', name: 'base', namespace: NS.XML }],
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['xml:lang', { prefix: 'xml', name: 'lang', namespace: NS.XML }],
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['xml:space', { prefix: 'xml', name: 'space', namespace: NS.XML }],
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['xmlns', { prefix: '', name: 'xmlns', namespace: NS.XMLNS }],
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['xmlns:xlink', { prefix: 'xmlns', name: 'xlink', namespace: NS.XMLNS }],
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]);
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//SVG tag names adjustment map
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export const SVG_TAG_NAMES_ADJUSTMENT_MAP = new Map([
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'altGlyph',
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'altGlyphDef',
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'altGlyphItem',
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'animateColor',
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'animateMotion',
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'animateTransform',
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'clipPath',
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'feBlend',
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'feColorMatrix',
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'feComponentTransfer',
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'feComposite',
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'feConvolveMatrix',
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'feDiffuseLighting',
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'feDisplacementMap',
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'feDistantLight',
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'feFlood',
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'feFuncA',
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'feFuncB',
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'feFuncG',
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'feFuncR',
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'feGaussianBlur',
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'feImage',
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'feMerge',
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'feMergeNode',
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'feMorphology',
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'feOffset',
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'fePointLight',
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'feSpecularLighting',
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'feSpotLight',
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'feTile',
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'feTurbulence',
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'foreignObject',
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'glyphRef',
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'linearGradient',
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'radialGradient',
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'textPath',
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].map((tn) => [tn.toLowerCase(), tn]));
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//Tags that causes exit from foreign content
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const EXITS_FOREIGN_CONTENT = new Set([
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$.B,
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$.BIG,
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$.BLOCKQUOTE,
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$.BODY,
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$.BR,
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$.CENTER,
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$.CODE,
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$.DD,
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$.DIV,
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$.DL,
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$.DT,
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$.EM,
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$.EMBED,
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$.H1,
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$.H2,
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$.H3,
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$.H4,
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$.H5,
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$.H6,
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$.HEAD,
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$.HR,
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$.I,
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$.IMG,
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$.LI,
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$.LISTING,
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$.MENU,
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$.META,
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$.NOBR,
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$.OL,
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$.P,
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$.PRE,
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$.RUBY,
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$.S,
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$.SMALL,
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$.SPAN,
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$.STRONG,
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$.STRIKE,
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$.SUB,
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$.SUP,
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$.TABLE,
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$.TT,
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$.U,
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$.UL,
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$.VAR,
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]);
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//Check exit from foreign content
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export function causesExit(startTagToken) {
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const tn = startTagToken.tagID;
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const isFontWithAttrs = tn === $.FONT &&
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startTagToken.attrs.some(({ name }) => name === ATTRS.COLOR || name === ATTRS.SIZE || name === ATTRS.FACE);
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return isFontWithAttrs || EXITS_FOREIGN_CONTENT.has(tn);
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}
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//Token adjustments
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export function adjustTokenMathMLAttrs(token) {
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for (let i = 0; i < token.attrs.length; i++) {
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if (token.attrs[i].name === DEFINITION_URL_ATTR) {
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token.attrs[i].name = ADJUSTED_DEFINITION_URL_ATTR;
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break;
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}
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}
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}
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export function adjustTokenSVGAttrs(token) {
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for (let i = 0; i < token.attrs.length; i++) {
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const adjustedAttrName = SVG_ATTRS_ADJUSTMENT_MAP.get(token.attrs[i].name);
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if (adjustedAttrName != null) {
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token.attrs[i].name = adjustedAttrName;
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}
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}
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}
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export function adjustTokenXMLAttrs(token) {
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for (let i = 0; i < token.attrs.length; i++) {
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const adjustedAttrEntry = XML_ATTRS_ADJUSTMENT_MAP.get(token.attrs[i].name);
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if (adjustedAttrEntry) {
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token.attrs[i].prefix = adjustedAttrEntry.prefix;
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token.attrs[i].name = adjustedAttrEntry.name;
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token.attrs[i].namespace = adjustedAttrEntry.namespace;
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}
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}
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}
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export function adjustTokenSVGTagName(token) {
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const adjustedTagName = SVG_TAG_NAMES_ADJUSTMENT_MAP.get(token.tagName);
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if (adjustedTagName != null) {
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token.tagName = adjustedTagName;
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token.tagID = getTagID(token.tagName);
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}
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}
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//Integration points
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function isMathMLTextIntegrationPoint(tn, ns) {
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return ns === NS.MATHML && (tn === $.MI || tn === $.MO || tn === $.MN || tn === $.MS || tn === $.MTEXT);
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}
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function isHtmlIntegrationPoint(tn, ns, attrs) {
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if (ns === NS.MATHML && tn === $.ANNOTATION_XML) {
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for (let i = 0; i < attrs.length; i++) {
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if (attrs[i].name === ATTRS.ENCODING) {
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const value = attrs[i].value.toLowerCase();
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return value === MIME_TYPES.TEXT_HTML || value === MIME_TYPES.APPLICATION_XML;
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}
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}
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}
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return ns === NS.SVG && (tn === $.FOREIGN_OBJECT || tn === $.DESC || tn === $.TITLE);
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}
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export function isIntegrationPoint(tn, ns, attrs, foreignNS) {
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return (((!foreignNS || foreignNS === NS.HTML) && isHtmlIntegrationPoint(tn, ns, attrs)) ||
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((!foreignNS || foreignNS === NS.MATHML) && isMathMLTextIntegrationPoint(tn, ns)));
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}
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//# sourceMappingURL=foreign-content.js.map
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