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Merge pull request #24 from postalsys/3.0.2
3.0.2
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| 'use strict'; | ||
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| const { XMLParser } = require('fast-xml-parser'); | ||
|
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| function validateSvg(logo) { | ||
| const parser = new XMLParser({ | ||
| ignoreAttributes: false, | ||
| attributeNamePrefix: '@_' | ||
| }); | ||
|
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| let logoObj; | ||
| try { | ||
| logoObj = parser.parse(logo); | ||
| if (!logoObj) { | ||
| throw new Error('Emtpy file'); | ||
| } | ||
| } catch (err) { | ||
| let error = new Error('Invalid SVG file'); | ||
| error._err = err; | ||
| error.code = 'INVALID_XML_FILE'; | ||
| throw error; | ||
| } | ||
|
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| if (!logoObj.svg) { | ||
| let error = new Error('Invalid SVG file'); | ||
| error.code = 'INVALID_SVG_FILE'; | ||
| throw error; | ||
| } | ||
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| if (logoObj.svg['@_baseProfile'] !== 'tiny-ps') { | ||
| let error = new Error('Not a Tiny PS profile'); | ||
| error.code = 'INVALID_BASE_PROFILE'; | ||
| throw error; | ||
| } | ||
|
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| if (!logoObj.svg.title) { | ||
| let error = new Error('Logo file is missing title'); | ||
| error.code = 'LOGO_MISSING_TITLE'; | ||
| throw error; | ||
| } | ||
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| if ('@_x' in logoObj.svg || '@_y' in logoObj.svg) { | ||
| let error = new Error('Logo root includes x/y attributes'); | ||
| error.code = 'LOGO_INVALID_ROOT_ATTRS'; | ||
| throw error; | ||
| } | ||
|
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||
| let walkElm = (node, name, path) => { | ||
| if (!node) { | ||
| return; | ||
| } | ||
| if (Array.isArray(node)) { | ||
| for (let entry of node) { | ||
| walkElm(entry, name, path + '.' + name + '[]'); | ||
| } | ||
| } else if (typeof node === 'object') { | ||
| if (node['@_xlink:href'] && !/^#/.test(node['@_xlink:href'])) { | ||
| let error = new Error('External reference found from file'); | ||
| error.details = { | ||
| element: name, | ||
| link: node['@_xlink:href'], | ||
| path | ||
| }; | ||
| error.code = 'LOGO_INCLUDES_REFERENCE'; | ||
| throw error; | ||
| } | ||
|
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| for (let key of Object.keys(node)) { | ||
| if (['script', 'animate', 'animatemotion', 'animatetransform', 'discard', 'set'].includes(key.toLowerCase())) { | ||
| let error = new Error('Unallowed element found from file'); | ||
| error.details = { | ||
| element: key, | ||
| path: path + '.' + key | ||
| }; | ||
| error.code = 'LOGO_INVALID_ELEMENT'; | ||
| throw error; | ||
| } | ||
|
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| if (Array.isArray(node[key])) { | ||
| for (let entry of node[key]) { | ||
| walkElm(entry, key, path + '.' + key + '[]'); | ||
| } | ||
| } else if (node[key] && typeof node[key] === 'object') { | ||
| walkElm(node[key], key, path + '.' + key); | ||
| } | ||
| } | ||
| } | ||
| }; | ||
|
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| walkElm(logoObj, 'root', ''); | ||
|
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| // all validations passed | ||
| return true; | ||
| } | ||
|
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| module.exports = { validateSvg }; |
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