setup-python/node_modules/parse5/lib/common/foreign_content.js

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2019-06-27 08:12:00 +07:00
'use strict';
var Tokenizer = require('../tokenizer'),
HTML = require('./html');
//Aliases
var $ = HTML.TAG_NAMES,
NS = HTML.NAMESPACES,
ATTRS = HTML.ATTRS;
//MIME types
var MIME_TYPES = {
TEXT_HTML: 'text/html',
APPLICATION_XML: 'application/xhtml+xml'
};
//Attributes
var DEFINITION_URL_ATTR = 'definitionurl',
ADJUSTED_DEFINITION_URL_ATTR = 'definitionURL',
SVG_ATTRS_ADJUSTMENT_MAP = {
'attributename': 'attributeName',
'attributetype': 'attributeType',
'basefrequency': 'baseFrequency',
'baseprofile': 'baseProfile',
'calcmode': 'calcMode',
'clippathunits': 'clipPathUnits',
'diffuseconstant': 'diffuseConstant',
'edgemode': 'edgeMode',
'filterunits': 'filterUnits',
'glyphref': 'glyphRef',
'gradienttransform': 'gradientTransform',
'gradientunits': 'gradientUnits',
'kernelmatrix': 'kernelMatrix',
'kernelunitlength': 'kernelUnitLength',
'keypoints': 'keyPoints',
'keysplines': 'keySplines',
'keytimes': 'keyTimes',
'lengthadjust': 'lengthAdjust',
'limitingconeangle': 'limitingConeAngle',
'markerheight': 'markerHeight',
'markerunits': 'markerUnits',
'markerwidth': 'markerWidth',
'maskcontentunits': 'maskContentUnits',
'maskunits': 'maskUnits',
'numoctaves': 'numOctaves',
'pathlength': 'pathLength',
'patterncontentunits': 'patternContentUnits',
'patterntransform': 'patternTransform',
'patternunits': 'patternUnits',
'pointsatx': 'pointsAtX',
'pointsaty': 'pointsAtY',
'pointsatz': 'pointsAtZ',
'preservealpha': 'preserveAlpha',
'preserveaspectratio': 'preserveAspectRatio',
'primitiveunits': 'primitiveUnits',
'refx': 'refX',
'refy': 'refY',
'repeatcount': 'repeatCount',
'repeatdur': 'repeatDur',
'requiredextensions': 'requiredExtensions',
'requiredfeatures': 'requiredFeatures',
'specularconstant': 'specularConstant',
'specularexponent': 'specularExponent',
'spreadmethod': 'spreadMethod',
'startoffset': 'startOffset',
'stddeviation': 'stdDeviation',
'stitchtiles': 'stitchTiles',
'surfacescale': 'surfaceScale',
'systemlanguage': 'systemLanguage',
'tablevalues': 'tableValues',
'targetx': 'targetX',
'targety': 'targetY',
'textlength': 'textLength',
'viewbox': 'viewBox',
'viewtarget': 'viewTarget',
'xchannelselector': 'xChannelSelector',
'ychannelselector': 'yChannelSelector',
'zoomandpan': 'zoomAndPan'
},
XML_ATTRS_ADJUSTMENT_MAP = {
'xlink:actuate': {prefix: 'xlink', name: 'actuate', namespace: NS.XLINK},
'xlink:arcrole': {prefix: 'xlink', name: 'arcrole', namespace: NS.XLINK},
'xlink:href': {prefix: 'xlink', name: 'href', namespace: NS.XLINK},
'xlink:role': {prefix: 'xlink', name: 'role', namespace: NS.XLINK},
'xlink:show': {prefix: 'xlink', name: 'show', namespace: NS.XLINK},
'xlink:title': {prefix: 'xlink', name: 'title', namespace: NS.XLINK},
'xlink:type': {prefix: 'xlink', name: 'type', namespace: NS.XLINK},
'xml:base': {prefix: 'xml', name: 'base', namespace: NS.XML},
'xml:lang': {prefix: 'xml', name: 'lang', namespace: NS.XML},
'xml:space': {prefix: 'xml', name: 'space', namespace: NS.XML},
'xmlns': {prefix: '', name: 'xmlns', namespace: NS.XMLNS},
'xmlns:xlink': {prefix: 'xmlns', name: 'xlink', namespace: NS.XMLNS}
};
//SVG tag names adjustment map
var SVG_TAG_NAMES_ADJUSTMENT_MAP = exports.SVG_TAG_NAMES_ADJUSTMENT_MAP = {
'altglyph': 'altGlyph',
'altglyphdef': 'altGlyphDef',
'altglyphitem': 'altGlyphItem',
'animatecolor': 'animateColor',
'animatemotion': 'animateMotion',
'animatetransform': 'animateTransform',
'clippath': 'clipPath',
'feblend': 'feBlend',
'fecolormatrix': 'feColorMatrix',
'fecomponenttransfer': 'feComponentTransfer',
'fecomposite': 'feComposite',
'feconvolvematrix': 'feConvolveMatrix',
'fediffuselighting': 'feDiffuseLighting',
'fedisplacementmap': 'feDisplacementMap',
'fedistantlight': 'feDistantLight',
'feflood': 'feFlood',
'fefunca': 'feFuncA',
'fefuncb': 'feFuncB',
'fefuncg': 'feFuncG',
'fefuncr': 'feFuncR',
'fegaussianblur': 'feGaussianBlur',
'feimage': 'feImage',
'femerge': 'feMerge',
'femergenode': 'feMergeNode',
'femorphology': 'feMorphology',
'feoffset': 'feOffset',
'fepointlight': 'fePointLight',
'fespecularlighting': 'feSpecularLighting',
'fespotlight': 'feSpotLight',
'fetile': 'feTile',
'feturbulence': 'feTurbulence',
'foreignobject': 'foreignObject',
'glyphref': 'glyphRef',
'lineargradient': 'linearGradient',
'radialgradient': 'radialGradient',
'textpath': 'textPath'
};
//Tags that causes exit from foreign content
var EXITS_FOREIGN_CONTENT = Object.create(null);
EXITS_FOREIGN_CONTENT[$.B] = true;
EXITS_FOREIGN_CONTENT[$.BIG] = true;
EXITS_FOREIGN_CONTENT[$.BLOCKQUOTE] = true;
EXITS_FOREIGN_CONTENT[$.BODY] = true;
EXITS_FOREIGN_CONTENT[$.BR] = true;
EXITS_FOREIGN_CONTENT[$.CENTER] = true;
EXITS_FOREIGN_CONTENT[$.CODE] = true;
EXITS_FOREIGN_CONTENT[$.DD] = true;
EXITS_FOREIGN_CONTENT[$.DIV] = true;
EXITS_FOREIGN_CONTENT[$.DL] = true;
EXITS_FOREIGN_CONTENT[$.DT] = true;
EXITS_FOREIGN_CONTENT[$.EM] = true;
EXITS_FOREIGN_CONTENT[$.EMBED] = true;
EXITS_FOREIGN_CONTENT[$.H1] = true;
EXITS_FOREIGN_CONTENT[$.H2] = true;
EXITS_FOREIGN_CONTENT[$.H3] = true;
EXITS_FOREIGN_CONTENT[$.H4] = true;
EXITS_FOREIGN_CONTENT[$.H5] = true;
EXITS_FOREIGN_CONTENT[$.H6] = true;
EXITS_FOREIGN_CONTENT[$.HEAD] = true;
EXITS_FOREIGN_CONTENT[$.HR] = true;
EXITS_FOREIGN_CONTENT[$.I] = true;
EXITS_FOREIGN_CONTENT[$.IMG] = true;
EXITS_FOREIGN_CONTENT[$.LI] = true;
EXITS_FOREIGN_CONTENT[$.LISTING] = true;
EXITS_FOREIGN_CONTENT[$.MENU] = true;
EXITS_FOREIGN_CONTENT[$.META] = true;
EXITS_FOREIGN_CONTENT[$.NOBR] = true;
EXITS_FOREIGN_CONTENT[$.OL] = true;
EXITS_FOREIGN_CONTENT[$.P] = true;
EXITS_FOREIGN_CONTENT[$.PRE] = true;
EXITS_FOREIGN_CONTENT[$.RUBY] = true;
EXITS_FOREIGN_CONTENT[$.S] = true;
EXITS_FOREIGN_CONTENT[$.SMALL] = true;
EXITS_FOREIGN_CONTENT[$.SPAN] = true;
EXITS_FOREIGN_CONTENT[$.STRONG] = true;
EXITS_FOREIGN_CONTENT[$.STRIKE] = true;
EXITS_FOREIGN_CONTENT[$.SUB] = true;
EXITS_FOREIGN_CONTENT[$.SUP] = true;
EXITS_FOREIGN_CONTENT[$.TABLE] = true;
EXITS_FOREIGN_CONTENT[$.TT] = true;
EXITS_FOREIGN_CONTENT[$.U] = true;
EXITS_FOREIGN_CONTENT[$.UL] = true;
EXITS_FOREIGN_CONTENT[$.VAR] = true;
//Check exit from foreign content
exports.causesExit = function (startTagToken) {
var tn = startTagToken.tagName;
var isFontWithAttrs = tn === $.FONT && (Tokenizer.getTokenAttr(startTagToken, ATTRS.COLOR) !== null ||
Tokenizer.getTokenAttr(startTagToken, ATTRS.SIZE) !== null ||
Tokenizer.getTokenAttr(startTagToken, ATTRS.FACE) !== null);
return isFontWithAttrs ? true : EXITS_FOREIGN_CONTENT[tn];
};
//Token adjustments
exports.adjustTokenMathMLAttrs = function (token) {
for (var i = 0; i < token.attrs.length; i++) {
if (token.attrs[i].name === DEFINITION_URL_ATTR) {
token.attrs[i].name = ADJUSTED_DEFINITION_URL_ATTR;
break;
}
}
};
exports.adjustTokenSVGAttrs = function (token) {
for (var i = 0; i < token.attrs.length; i++) {
var adjustedAttrName = SVG_ATTRS_ADJUSTMENT_MAP[token.attrs[i].name];
if (adjustedAttrName)
token.attrs[i].name = adjustedAttrName;
}
};
exports.adjustTokenXMLAttrs = function (token) {
for (var i = 0; i < token.attrs.length; i++) {
var adjustedAttrEntry = XML_ATTRS_ADJUSTMENT_MAP[token.attrs[i].name];
if (adjustedAttrEntry) {
token.attrs[i].prefix = adjustedAttrEntry.prefix;
token.attrs[i].name = adjustedAttrEntry.name;
token.attrs[i].namespace = adjustedAttrEntry.namespace;
}
}
};
exports.adjustTokenSVGTagName = function (token) {
var adjustedTagName = SVG_TAG_NAMES_ADJUSTMENT_MAP[token.tagName];
if (adjustedTagName)
token.tagName = adjustedTagName;
};
//Integration points
function isMathMLTextIntegrationPoint(tn, ns) {
return ns === NS.MATHML && (tn === $.MI || tn === $.MO || tn === $.MN || tn === $.MS || tn === $.MTEXT);
}
function isHtmlIntegrationPoint(tn, ns, attrs) {
if (ns === NS.MATHML && tn === $.ANNOTATION_XML) {
for (var i = 0; i < attrs.length; i++) {
if (attrs[i].name === ATTRS.ENCODING) {
var value = attrs[i].value.toLowerCase();
return value === MIME_TYPES.TEXT_HTML || value === MIME_TYPES.APPLICATION_XML;
}
}
}
return ns === NS.SVG && (tn === $.FOREIGN_OBJECT || tn === $.DESC || tn === $.TITLE);
}
exports.isIntegrationPoint = function (tn, ns, attrs, foreignNS) {
if ((!foreignNS || foreignNS === NS.HTML) && isHtmlIntegrationPoint(tn, ns, attrs))
return true;
if ((!foreignNS || foreignNS === NS.MATHML) && isMathMLTextIntegrationPoint(tn, ns))
return true;
return false;
};