source: trip-planner-front/node_modules/parse5/lib/common/foreign-content.js

Last change on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

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1'use strict';
2
3const Tokenizer = require('../tokenizer');
4const HTML = require('./html');
5
6//Aliases
7const $ = HTML.TAG_NAMES;
8const NS = HTML.NAMESPACES;
9const ATTRS = HTML.ATTRS;
10
11//MIME types
12const MIME_TYPES = {
13 TEXT_HTML: 'text/html',
14 APPLICATION_XML: 'application/xhtml+xml'
15};
16
17//Attributes
18const DEFINITION_URL_ATTR = 'definitionurl';
19const ADJUSTED_DEFINITION_URL_ATTR = 'definitionURL';
20const SVG_ATTRS_ADJUSTMENT_MAP = {
21 attributename: 'attributeName',
22 attributetype: 'attributeType',
23 basefrequency: 'baseFrequency',
24 baseprofile: 'baseProfile',
25 calcmode: 'calcMode',
26 clippathunits: 'clipPathUnits',
27 diffuseconstant: 'diffuseConstant',
28 edgemode: 'edgeMode',
29 filterunits: 'filterUnits',
30 glyphref: 'glyphRef',
31 gradienttransform: 'gradientTransform',
32 gradientunits: 'gradientUnits',
33 kernelmatrix: 'kernelMatrix',
34 kernelunitlength: 'kernelUnitLength',
35 keypoints: 'keyPoints',
36 keysplines: 'keySplines',
37 keytimes: 'keyTimes',
38 lengthadjust: 'lengthAdjust',
39 limitingconeangle: 'limitingConeAngle',
40 markerheight: 'markerHeight',
41 markerunits: 'markerUnits',
42 markerwidth: 'markerWidth',
43 maskcontentunits: 'maskContentUnits',
44 maskunits: 'maskUnits',
45 numoctaves: 'numOctaves',
46 pathlength: 'pathLength',
47 patterncontentunits: 'patternContentUnits',
48 patterntransform: 'patternTransform',
49 patternunits: 'patternUnits',
50 pointsatx: 'pointsAtX',
51 pointsaty: 'pointsAtY',
52 pointsatz: 'pointsAtZ',
53 preservealpha: 'preserveAlpha',
54 preserveaspectratio: 'preserveAspectRatio',
55 primitiveunits: 'primitiveUnits',
56 refx: 'refX',
57 refy: 'refY',
58 repeatcount: 'repeatCount',
59 repeatdur: 'repeatDur',
60 requiredextensions: 'requiredExtensions',
61 requiredfeatures: 'requiredFeatures',
62 specularconstant: 'specularConstant',
63 specularexponent: 'specularExponent',
64 spreadmethod: 'spreadMethod',
65 startoffset: 'startOffset',
66 stddeviation: 'stdDeviation',
67 stitchtiles: 'stitchTiles',
68 surfacescale: 'surfaceScale',
69 systemlanguage: 'systemLanguage',
70 tablevalues: 'tableValues',
71 targetx: 'targetX',
72 targety: 'targetY',
73 textlength: 'textLength',
74 viewbox: 'viewBox',
75 viewtarget: 'viewTarget',
76 xchannelselector: 'xChannelSelector',
77 ychannelselector: 'yChannelSelector',
78 zoomandpan: 'zoomAndPan'
79};
80
81const XML_ATTRS_ADJUSTMENT_MAP = {
82 'xlink:actuate': { prefix: 'xlink', name: 'actuate', namespace: NS.XLINK },
83 'xlink:arcrole': { prefix: 'xlink', name: 'arcrole', namespace: NS.XLINK },
84 'xlink:href': { prefix: 'xlink', name: 'href', namespace: NS.XLINK },
85 'xlink:role': { prefix: 'xlink', name: 'role', namespace: NS.XLINK },
86 'xlink:show': { prefix: 'xlink', name: 'show', namespace: NS.XLINK },
87 'xlink:title': { prefix: 'xlink', name: 'title', namespace: NS.XLINK },
88 'xlink:type': { prefix: 'xlink', name: 'type', namespace: NS.XLINK },
89 'xml:base': { prefix: 'xml', name: 'base', namespace: NS.XML },
90 'xml:lang': { prefix: 'xml', name: 'lang', namespace: NS.XML },
91 'xml:space': { prefix: 'xml', name: 'space', namespace: NS.XML },
92 xmlns: { prefix: '', name: 'xmlns', namespace: NS.XMLNS },
93 'xmlns:xlink': { prefix: 'xmlns', name: 'xlink', namespace: NS.XMLNS }
94};
95
96//SVG tag names adjustment map
97const SVG_TAG_NAMES_ADJUSTMENT_MAP = (exports.SVG_TAG_NAMES_ADJUSTMENT_MAP = {
98 altglyph: 'altGlyph',
99 altglyphdef: 'altGlyphDef',
100 altglyphitem: 'altGlyphItem',
101 animatecolor: 'animateColor',
102 animatemotion: 'animateMotion',
103 animatetransform: 'animateTransform',
104 clippath: 'clipPath',
105 feblend: 'feBlend',
106 fecolormatrix: 'feColorMatrix',
107 fecomponenttransfer: 'feComponentTransfer',
108 fecomposite: 'feComposite',
109 feconvolvematrix: 'feConvolveMatrix',
110 fediffuselighting: 'feDiffuseLighting',
111 fedisplacementmap: 'feDisplacementMap',
112 fedistantlight: 'feDistantLight',
113 feflood: 'feFlood',
114 fefunca: 'feFuncA',
115 fefuncb: 'feFuncB',
116 fefuncg: 'feFuncG',
117 fefuncr: 'feFuncR',
118 fegaussianblur: 'feGaussianBlur',
119 feimage: 'feImage',
120 femerge: 'feMerge',
121 femergenode: 'feMergeNode',
122 femorphology: 'feMorphology',
123 feoffset: 'feOffset',
124 fepointlight: 'fePointLight',
125 fespecularlighting: 'feSpecularLighting',
126 fespotlight: 'feSpotLight',
127 fetile: 'feTile',
128 feturbulence: 'feTurbulence',
129 foreignobject: 'foreignObject',
130 glyphref: 'glyphRef',
131 lineargradient: 'linearGradient',
132 radialgradient: 'radialGradient',
133 textpath: 'textPath'
134});
135
136//Tags that causes exit from foreign content
137const EXITS_FOREIGN_CONTENT = {
138 [$.B]: true,
139 [$.BIG]: true,
140 [$.BLOCKQUOTE]: true,
141 [$.BODY]: true,
142 [$.BR]: true,
143 [$.CENTER]: true,
144 [$.CODE]: true,
145 [$.DD]: true,
146 [$.DIV]: true,
147 [$.DL]: true,
148 [$.DT]: true,
149 [$.EM]: true,
150 [$.EMBED]: true,
151 [$.H1]: true,
152 [$.H2]: true,
153 [$.H3]: true,
154 [$.H4]: true,
155 [$.H5]: true,
156 [$.H6]: true,
157 [$.HEAD]: true,
158 [$.HR]: true,
159 [$.I]: true,
160 [$.IMG]: true,
161 [$.LI]: true,
162 [$.LISTING]: true,
163 [$.MENU]: true,
164 [$.META]: true,
165 [$.NOBR]: true,
166 [$.OL]: true,
167 [$.P]: true,
168 [$.PRE]: true,
169 [$.RUBY]: true,
170 [$.S]: true,
171 [$.SMALL]: true,
172 [$.SPAN]: true,
173 [$.STRONG]: true,
174 [$.STRIKE]: true,
175 [$.SUB]: true,
176 [$.SUP]: true,
177 [$.TABLE]: true,
178 [$.TT]: true,
179 [$.U]: true,
180 [$.UL]: true,
181 [$.VAR]: true
182};
183
184//Check exit from foreign content
185exports.causesExit = function(startTagToken) {
186 const tn = startTagToken.tagName;
187 const isFontWithAttrs =
188 tn === $.FONT &&
189 (Tokenizer.getTokenAttr(startTagToken, ATTRS.COLOR) !== null ||
190 Tokenizer.getTokenAttr(startTagToken, ATTRS.SIZE) !== null ||
191 Tokenizer.getTokenAttr(startTagToken, ATTRS.FACE) !== null);
192
193 return isFontWithAttrs ? true : EXITS_FOREIGN_CONTENT[tn];
194};
195
196//Token adjustments
197exports.adjustTokenMathMLAttrs = function(token) {
198 for (let i = 0; i < token.attrs.length; i++) {
199 if (token.attrs[i].name === DEFINITION_URL_ATTR) {
200 token.attrs[i].name = ADJUSTED_DEFINITION_URL_ATTR;
201 break;
202 }
203 }
204};
205
206exports.adjustTokenSVGAttrs = function(token) {
207 for (let i = 0; i < token.attrs.length; i++) {
208 const adjustedAttrName = SVG_ATTRS_ADJUSTMENT_MAP[token.attrs[i].name];
209
210 if (adjustedAttrName) {
211 token.attrs[i].name = adjustedAttrName;
212 }
213 }
214};
215
216exports.adjustTokenXMLAttrs = function(token) {
217 for (let i = 0; i < token.attrs.length; i++) {
218 const adjustedAttrEntry = XML_ATTRS_ADJUSTMENT_MAP[token.attrs[i].name];
219
220 if (adjustedAttrEntry) {
221 token.attrs[i].prefix = adjustedAttrEntry.prefix;
222 token.attrs[i].name = adjustedAttrEntry.name;
223 token.attrs[i].namespace = adjustedAttrEntry.namespace;
224 }
225 }
226};
227
228exports.adjustTokenSVGTagName = function(token) {
229 const adjustedTagName = SVG_TAG_NAMES_ADJUSTMENT_MAP[token.tagName];
230
231 if (adjustedTagName) {
232 token.tagName = adjustedTagName;
233 }
234};
235
236//Integration points
237function isMathMLTextIntegrationPoint(tn, ns) {
238 return ns === NS.MATHML && (tn === $.MI || tn === $.MO || tn === $.MN || tn === $.MS || tn === $.MTEXT);
239}
240
241function isHtmlIntegrationPoint(tn, ns, attrs) {
242 if (ns === NS.MATHML && tn === $.ANNOTATION_XML) {
243 for (let i = 0; i < attrs.length; i++) {
244 if (attrs[i].name === ATTRS.ENCODING) {
245 const value = attrs[i].value.toLowerCase();
246
247 return value === MIME_TYPES.TEXT_HTML || value === MIME_TYPES.APPLICATION_XML;
248 }
249 }
250 }
251
252 return ns === NS.SVG && (tn === $.FOREIGN_OBJECT || tn === $.DESC || tn === $.TITLE);
253}
254
255exports.isIntegrationPoint = function(tn, ns, attrs, foreignNS) {
256 if ((!foreignNS || foreignNS === NS.HTML) && isHtmlIntegrationPoint(tn, ns, attrs)) {
257 return true;
258 }
259
260 if ((!foreignNS || foreignNS === NS.MATHML) && isMathMLTextIntegrationPoint(tn, ns)) {
261 return true;
262 }
263
264 return false;
265};
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