From aa167227ac153987e7dcc2ff728c6c3372cd9037 Mon Sep 17 00:00:00 2001
From: Nick Schonning <nschonni@gmail.com>
Date: Tue, 14 Dec 2021 16:51:28 -0500
Subject: [PATCH] feat(attr-lowercase): ignore camelCase SVG attributes

Closes https://github.com/htmlhint/HTMLHint/issues/542
---
 dist/core/rules/attr-lowercase.js       | 77 +++++++++++++++++++++++-
 dist/htmlhint.js                        | 75 +++++++++++++++++++++++-
 dist/htmlhint.min.js                    |  2 +-
 docs/user-guide/rules/attr-lowercase.md |  7 ++-
 src/core/rules/attr-lowercase.ts        | 78 ++++++++++++++++++++++++-
 test/rules/attr-lowercase.spec.js       | 20 +++++++
 6 files changed, 252 insertions(+), 7 deletions(-)

diff --git a/dist/core/rules/attr-lowercase.js b/dist/core/rules/attr-lowercase.js
index c068a9b37..7d090034c 100644
--- a/dist/core/rules/attr-lowercase.js
+++ b/dist/core/rules/attr-lowercase.js
@@ -1,5 +1,78 @@
 "use strict";
 Object.defineProperty(exports, "__esModule", { value: true });
+const svgIgnores = [
+    'allowReorder',
+    'attributeName',
+    'attributeType',
+    'autoReverse',
+    'baseFrequency',
+    'baseProfile',
+    'calcMode',
+    'clipPath',
+    'clipPathUnits',
+    'contentScriptType',
+    'contentStyleType',
+    'diffuseConstant',
+    'edgeMode',
+    'externalResourcesRequired',
+    'filterRes',
+    'filterUnits',
+    'glyphRef',
+    'gradientTransform',
+    'gradientUnits',
+    'kernelMatrix',
+    'kernelUnitLength',
+    'keyPoints',
+    'keySplines',
+    'keyTimes',
+    'lengthAdjust',
+    'limitingConeAngle',
+    'markerHeight',
+    'markerUnits',
+    'markerWidth',
+    'maskContentUnits',
+    'maskUnits',
+    'numOctaves',
+    'onBlur',
+    'onChange',
+    'onClick',
+    'onFocus',
+    'onKeyUp',
+    'onLoad',
+    'pathLength',
+    'patternContentUnits',
+    'patternTransform',
+    'patternUnits',
+    'pointsAtX',
+    'pointsAtY',
+    'pointsAtZ',
+    'preserveAlpha',
+    'preserveAspectRatio',
+    'primitiveUnits',
+    'refX',
+    'refY',
+    'repeatCount',
+    'repeatDur',
+    'requiredExtensions',
+    'requiredFeatures',
+    'specularConstant',
+    'specularExponent',
+    'spreadMethod',
+    'startOffset',
+    'stdDeviation',
+    'stitchTiles',
+    'surfaceScale',
+    'systemLanguage',
+    'tableValues',
+    'targetX',
+    'targetY',
+    'textLength',
+    'viewBox',
+    'viewTarget',
+    'xChannelSelector',
+    'yChannelSelector',
+    'zoomAndPan',
+];
 function testAgainstStringOrRegExp(value, comparison) {
     if (comparison instanceof RegExp) {
         return comparison.test(value)
@@ -25,7 +98,7 @@ exports.default = {
     id: 'attr-lowercase',
     description: 'All attribute names must be in lowercase.',
     init(parser, reporter, options) {
-        const exceptions = Array.isArray(options) ? options : [];
+        const exceptions = (Array.isArray(options) ? options : []).concat(svgIgnores);
         parser.addListener('tagstart', (event) => {
             const attrs = event.attrs;
             let attr;
@@ -41,4 +114,4 @@ exports.default = {
         });
     },
 };
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\ No newline at end of file
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diff --git a/dist/htmlhint.js b/dist/htmlhint.js
index fbcd8ca47..ca7296758 100644
--- a/dist/htmlhint.js
+++ b/dist/htmlhint.js
@@ -336,6 +336,79 @@
 	var attrLowercase = {};
 
 	Object.defineProperty(attrLowercase, "__esModule", { value: true });
+	const svgIgnores = [
+	    'allowReorder',
+	    'attributeName',
+	    'attributeType',
+	    'autoReverse',
+	    'baseFrequency',
+	    'baseProfile',
+	    'calcMode',
+	    'clipPath',
+	    'clipPathUnits',
+	    'contentScriptType',
+	    'contentStyleType',
+	    'diffuseConstant',
+	    'edgeMode',
+	    'externalResourcesRequired',
+	    'filterRes',
+	    'filterUnits',
+	    'glyphRef',
+	    'gradientTransform',
+	    'gradientUnits',
+	    'kernelMatrix',
+	    'kernelUnitLength',
+	    'keyPoints',
+	    'keySplines',
+	    'keyTimes',
+	    'lengthAdjust',
+	    'limitingConeAngle',
+	    'markerHeight',
+	    'markerUnits',
+	    'markerWidth',
+	    'maskContentUnits',
+	    'maskUnits',
+	    'numOctaves',
+	    'onBlur',
+	    'onChange',
+	    'onClick',
+	    'onFocus',
+	    'onKeyUp',
+	    'onLoad',
+	    'pathLength',
+	    'patternContentUnits',
+	    'patternTransform',
+	    'patternUnits',
+	    'pointsAtX',
+	    'pointsAtY',
+	    'pointsAtZ',
+	    'preserveAlpha',
+	    'preserveAspectRatio',
+	    'primitiveUnits',
+	    'refX',
+	    'refY',
+	    'repeatCount',
+	    'repeatDur',
+	    'requiredExtensions',
+	    'requiredFeatures',
+	    'specularConstant',
+	    'specularExponent',
+	    'spreadMethod',
+	    'startOffset',
+	    'stdDeviation',
+	    'stitchTiles',
+	    'surfaceScale',
+	    'systemLanguage',
+	    'tableValues',
+	    'targetX',
+	    'targetY',
+	    'textLength',
+	    'viewBox',
+	    'viewTarget',
+	    'xChannelSelector',
+	    'yChannelSelector',
+	    'zoomAndPan',
+	];
 	function testAgainstStringOrRegExp(value, comparison) {
 	    if (comparison instanceof RegExp) {
 	        return comparison.test(value)
@@ -361,7 +434,7 @@
 	    id: 'attr-lowercase',
 	    description: 'All attribute names must be in lowercase.',
 	    init(parser, reporter, options) {
-	        const exceptions = Array.isArray(options) ? options : [];
+	        const exceptions = (Array.isArray(options) ? options : []).concat(svgIgnores);
 	        parser.addListener('tagstart', (event) => {
 	            const attrs = event.attrs;
 	            let attr;
diff --git a/dist/htmlhint.min.js b/dist/htmlhint.min.js
index c9bfe0b83..9cb72bd06 100644
--- a/dist/htmlhint.min.js
+++ b/dist/htmlhint.min.js
@@ -1 +1 @@
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i=s.map((e=>e)),l=i.shift(),o=i;a.some((e=>e.name===l))&&a.forEach((a=>{a.name===l&&-1===o.indexOf(a.value)&&t.error(`The <${n}> tag must have optional attr '${l}' with one value of '${o.join("' or '")}'.`,e.line,r,this,e.raw)}))}}))}if(Array.isArray(s.redundantAttrs)){s.redundantAttrs.forEach((s=>{a.some((e=>e.name===s))&&t.error(`The attr '${s}' is redundant for <${n}> and should be omitted.`,e.line,r,this,e.raw)}))}}}))}};var U={};return Object.defineProperty(U,"__esModule",{value:!0}),U.default={id:"attr-no-unnecessary-whitespace",description:"No spaces between attribute names and values.",init(e,t,a){const r=Array.isArray(a)?a:[];e.addListener("tagstart",(e=>{const a=e.attrs,n=e.col+e.tagName.length+1;for(let s=0;s<a.length;s++)if(-1===r.indexOf(a[s].name)){const r=/(\s*)=(\s*)/.exec(a[s].raw.trim());!r||0===r[1].length&&0===r[2].length||t.error(`The attribute '${a[s].name}' must not have spaces between the name and value.`,e.line,n+a[s].index,this,a[s].raw)}}))}},function(e){Object.defineProperty(e,"__esModule",{value:!0}),e.attrNoUnnecessaryWhitespace=e.tagsCheck=e.titleRequire=e.tagnameSpecialChars=e.tagnameLowercase=e.emptyTagNotSelfClosed=e.tagSelfClose=e.tagPair=e.styleDisabled=e.srcNotEmpty=e.specCharEscape=e.spaceTabMixedDisabled=e.scriptDisabled=e.inputRequiresLabel=e.inlineStyleDisabled=e.inlineScriptDisabled=e.idUnique=e.idClassValue=e.idClsasAdDisabled=e.htmlLangRequire=e.hrefAbsOrRel=e.headScriptDisabled=e.doctypeHTML5=e.doctypeFirst=e.attrWhitespace=e.attrValueSingleQuotes=e.attrValueNotEmpty=e.attrValueDoubleQuotes=e.attrUnsafeChars=e.attrNoDuplication=e.attrSort=e.attrLowercase=e.altRequire=void 0;var t=s;Object.defineProperty(e,"altRequire",{enumerable:!0,get:function(){return t.default}});var a=i;Object.defineProperty(e,"attrLowercase",{enumerable:!0,get:function(){return a.default}});var r=u;Object.defineProperty(e,"attrSort",{enumerable:!0,get:function(){return r.default}});var n=d;Object.defineProperty(e,"attrNoDuplication",{enumerable:!0,get:function(){return n.default}});var l=c;Object.defineProperty(e,"attrUnsafeChars",{enumerable:!0,get:function(){return l.default}});var o=f;Object.defineProperty(e,"attrValueDoubleQuotes",{enumerable:!0,get:function(){return o.default}});var D=g;Object.defineProperty(e,"attrValueNotEmpty",{enumerable:!0,get:function(){return D.default}});var H=h;Object.defineProperty(e,"attrValueSingleQuotes",{enumerable:!0,get:function(){return H.default}});var Z=p;Object.defineProperty(e,"attrWhitespace",{enumerable:!0,get:function(){return Z.default}});var I=m;Object.defineProperty(e,"doctypeFirst",{enumerable:!0,get:function(){return I.default}});var F=b;Object.defineProperty(e,"doctypeHTML5",{enumerable:!0,get:function(){return F.default}});var V=v;Object.defineProperty(e,"headScriptDisabled",{enumerable:!0,get:function(){return V.default}});var B=y;Object.defineProperty(e,"hrefAbsOrRel",{enumerable:!0,get:function(){return B.default}});var Y=w;Object.defineProperty(e,"htmlLangRequire",{enumerable:!0,get:function(){return Y.default}});var W=L;Object.defineProperty(e,"idClsasAdDisabled",{enumerable:!0,get:function(){return W.default}});var J=x;Object.defineProperty(e,"idClassValue",{enumerable:!0,get:function(){return J.default}});var Q=O;Object.defineProperty(e,"idUnique",{enumerable:!0,get:function(){return Q.default}});var X=j;Object.defineProperty(e,"inlineScriptDisabled",{enumerable:!0,get:function(){return X.default}});var G=P;Object.defineProperty(e,"inlineStyleDisabled",{enumerable:!0,get:function(){return G.default}});var K=_;Object.defineProperty(e,"inputRequiresLabel",{enumerable:!0,get:function(){return K.default}});var ee=$;Object.defineProperty(e,"scriptDisabled",{enumerable:!0,get:function(){return ee.default}});var te=T;Object.defineProperty(e,"spaceTabMixedDisabled",{enumerable:!0,get:function(){return te.default}});var ae=A;Object.defineProperty(e,"specCharEscape",{enumerable:!0,get:function(){return ae.default}});var re=M;Object.defineProperty(e,"srcNotEmpty",{enumerable:!0,get:function(){return re.default}});var ne=C;Object.defineProperty(e,"styleDisabled",{enumerable:!0,get:function(){return ne.default}});var se=N;Object.defineProperty(e,"tagPair",{enumerable:!0,get:function(){return se.default}});var ie=k;Object.defineProperty(e,"tagSelfClose",{enumerable:!0,get:function(){return ie.default}});var le=q;Object.defineProperty(e,"emptyTagNotSelfClosed",{enumerable:!0,get:function(){return le.default}});var oe=E;Object.defineProperty(e,"tagnameLowercase",{enumerable:!0,get:function(){return oe.default}});var ue=R;Object.defineProperty(e,"tagnameSpecialChars",{enumerable:!0,get:function(){return ue.default}});var de=S;Object.defineProperty(e,"titleRequire",{enumerable:!0,get:function(){return de.default}});var ce=z;Object.defineProperty(e,"tagsCheck",{enumerable:!0,get:function(){return ce.default}});var fe=U;Object.defineProperty(e,"attrNoUnnecessaryWhitespace",{enumerable:!0,get:function(){return fe.default}})}(n),function(e){Object.defineProperty(e,"__esModule",{value:!0}),e.HTMLParser=e.Reporter=e.HTMLRules=e.HTMLHint=void 0;const t=a;e.HTMLParser=t.default;const s=r;e.Reporter=s.default;const i=n;e.HTMLRules=i;function l(e,t){return new Array(e+1).join(t||" ")}e.HTMLHint=new class{constructor(){this.rules={},this.defaultRuleset={"tagname-lowercase":!0,"attr-lowercase":!0,"attr-value-double-quotes":!0,"doctype-first":!0,"tag-pair":!0,"spec-char-escape":!0,"id-unique":!0,"src-not-empty":!0,"attr-no-duplication":!0,"title-require":!0}}addRule(e){this.rules[e.id]=e}verify(e,a=this.defaultRuleset){0===Object.keys(a).length&&(a=this.defaultRuleset),e=e.replace(/^\s*<!--\s*htmlhint\s+([^\r\n]+?)\s*-->/i,((e,t)=>(t.replace(/(?:^|,)\s*([^:,]+)\s*(?:\:\s*([^,\s]+))?/g,((e,t,r)=>(a[t]=!(void 0!==r&&r.length>0)||JSON.parse(r),""))),"")));const r=new t.default,n=new s.default(e,a),i=this.rules;let l;for(const e in a)l=i[e],void 0!==l&&!1!==a[e]&&l.init(r,n,a[e]);return r.parse(e),n.messages}format(e,t={}){const a=[],r={white:"",grey:"",red:"",reset:""};t.colors&&(r.white="",r.grey="",r.red="",r.reset="");const n=t.indent||0;return e.forEach((e=>{let t=e.evidence;const s=e.line,i=e.col,o=t.length;let u=i>41?i-40:1,d=t.length>i+60?i+60:o;i<41&&(d+=40-i+1),t=t.replace(/\t/g," ").substring(u-1,d),u>1&&(t=`...${t}`,u-=3),d<o&&(t+="..."),a.push(`${r.white+l(n)}L${s} |${r.grey}${t}${r.reset}`);let c=i-u;const f=t.substring(0,c).match(/[^\u0000-\u00ff]/g);null!==f&&(c+=f.length),a.push(`${r.white+l(n)+l(String(s).length+3+c)}^ ${r.red}${e.message} (${e.rule.id})${r.reset}`)})),a}},Object.keys(i).forEach((t=>{e.HTMLHint.addRule(i[t])}))}(t),e(t)}));
diff --git a/docs/user-guide/rules/attr-lowercase.md b/docs/user-guide/rules/attr-lowercase.md
index 73aa48821..f02a9d765 100644
--- a/docs/user-guide/rules/attr-lowercase.md
+++ b/docs/user-guide/rules/attr-lowercase.md
@@ -11,14 +11,14 @@ Level: `error`
 
 1. true: enable rule
 2. false: disable rule
-3. ['viewBox', 'Test']: enable rule except for the given attribute names
+3. ['fooBar', 'Test']: enable rule except for the given attribute names. All SVG camelCase properties are included, for example `viewBox`
 
 ### Example
 
 ```json
 {
   ...
-  "attr-lowercase": ['viewBox']
+  "attr-lowercase": ['fooBar']
   ...
 }
 ```
@@ -28,6 +28,9 @@ The following pattern is **not** considered a rule violation:
 <!-- prettier-ignore -->
 ```html
 <img src="test.png" alt="test" />
+
+<!-- known SVG attributes are ignored -->
+<svg width="200" height="200" viewBox="0 0 200 200" />
 ```
 
 The following pattern is considered a rule violation:
diff --git a/src/core/rules/attr-lowercase.ts b/src/core/rules/attr-lowercase.ts
index d8fb51d28..06ec8f915 100644
--- a/src/core/rules/attr-lowercase.ts
+++ b/src/core/rules/attr-lowercase.ts
@@ -1,5 +1,79 @@
 import { Rule } from '../types'
 
+const svgIgnores = [
+  'allowReorder',
+  'attributeName',
+  'attributeType',
+  'autoReverse',
+  'baseFrequency',
+  'baseProfile',
+  'calcMode',
+  'clipPath',
+  'clipPathUnits',
+  'contentScriptType',
+  'contentStyleType',
+  'diffuseConstant',
+  'edgeMode',
+  'externalResourcesRequired',
+  'filterRes',
+  'filterUnits',
+  'glyphRef',
+  'gradientTransform',
+  'gradientUnits',
+  'kernelMatrix',
+  'kernelUnitLength',
+  'keyPoints',
+  'keySplines',
+  'keyTimes',
+  'lengthAdjust',
+  'limitingConeAngle',
+  'markerHeight',
+  'markerUnits',
+  'markerWidth',
+  'maskContentUnits',
+  'maskUnits',
+  'numOctaves',
+  'onBlur',
+  'onChange',
+  'onClick',
+  'onFocus',
+  'onKeyUp',
+  'onLoad',
+  'pathLength',
+  'patternContentUnits',
+  'patternTransform',
+  'patternUnits',
+  'pointsAtX',
+  'pointsAtY',
+  'pointsAtZ',
+  'preserveAlpha',
+  'preserveAspectRatio',
+  'primitiveUnits',
+  'refX',
+  'refY',
+  'repeatCount',
+  'repeatDur',
+  'requiredExtensions',
+  'requiredFeatures',
+  'specularConstant',
+  'specularExponent',
+  'spreadMethod',
+  'startOffset',
+  'stdDeviation',
+  'stitchTiles',
+  'surfaceScale',
+  'systemLanguage',
+  'tableValues',
+  'targetX',
+  'targetY',
+  'textLength',
+  'viewBox',
+  'viewTarget',
+  'xChannelSelector',
+  'yChannelSelector',
+  'zoomAndPan',
+]
+
 /**
  * testAgainstStringOrRegExp
  *
@@ -43,7 +117,9 @@ export default {
   id: 'attr-lowercase',
   description: 'All attribute names must be in lowercase.',
   init(parser, reporter, options) {
-    const exceptions = Array.isArray(options) ? options : []
+    const exceptions = (Array.isArray(options) ? options : []).concat(
+      svgIgnores
+    )
 
     parser.addListener('tagstart', (event) => {
       const attrs = event.attrs
diff --git a/test/rules/attr-lowercase.spec.js b/test/rules/attr-lowercase.spec.js
index 318dee70d..2d2fc974e 100644
--- a/test/rules/attr-lowercase.spec.js
+++ b/test/rules/attr-lowercase.spec.js
@@ -60,4 +60,24 @@ describe(`Rules: ${ruleId}`, () => {
     const messages = HTMLHint.verify(code, ruleOptions)
     expect(messages.length).to.be(0)
   })
+
+  it('Known SVG properties should be ignored with no config', () => {
+    const code = '<svg width="200" height="200" viewBox="0 0 200 200" />'
+    const messages = HTMLHint.verify(code, ruleOptions)
+    expect(messages.length).to.be(0)
+  })
+
+  it('Known SVG properties should be ignored with a config override', () => {
+    const code = '<svg width="200" height="200" viewBox="0 0 200 200" />'
+    ruleOptions[ruleId] = ['testBox']
+    const messages = HTMLHint.verify(code, ruleOptions)
+    expect(messages.length).to.be(0)
+  })
+
+  it('Double ignored SVG properties should not cause issues', () => {
+    const code = '<svg width="200" height="200" viewBox="0 0 200 200" />'
+    ruleOptions[ruleId] = ['viewBox']
+    const messages = HTMLHint.verify(code, ruleOptions)
+    expect(messages.length).to.be(0)
+  })
 })