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56 lines
1.5 KiB
56 lines
1.5 KiB
/* |
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MIT License http://www.opensource.org/licenses/mit-license.php |
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Author Tobias Koppers @sokra |
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*/ |
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"use strict"; |
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const NormalModule = require("../NormalModule"); |
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/** @typedef {import("../Compiler")} Compiler */ |
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// data URL scheme: "data:text/javascript;charset=utf-8;base64,some-string" |
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// http://www.ietf.org/rfc/rfc2397.txt |
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const URIRegEx = /^data:([^;,]+)?((?:;[^;,]+)*?)(?:;(base64))?,(.*)$/i; |
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const decodeDataURI = uri => { |
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const match = URIRegEx.exec(uri); |
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if (!match) return null; |
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const isBase64 = match[3]; |
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const body = match[4]; |
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return isBase64 |
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? Buffer.from(body, "base64") |
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: Buffer.from(decodeURIComponent(body), "ascii"); |
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}; |
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class DataUriPlugin { |
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/** |
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* Apply the plugin |
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* @param {Compiler} compiler the compiler instance |
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* @returns {void} |
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*/ |
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apply(compiler) { |
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compiler.hooks.compilation.tap( |
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"DataUriPlugin", |
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(compilation, { normalModuleFactory }) => { |
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normalModuleFactory.hooks.resolveForScheme |
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.for("data") |
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.tap("DataUriPlugin", resourceData => { |
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const match = URIRegEx.exec(resourceData.resource); |
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if (match) { |
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resourceData.data.mimetype = match[1] || ""; |
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resourceData.data.parameters = match[2] || ""; |
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resourceData.data.encoding = match[3] || false; |
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resourceData.data.encodedContent = match[4] || ""; |
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} |
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}); |
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NormalModule.getCompilationHooks(compilation) |
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.readResourceForScheme.for("data") |
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.tap("DataUriPlugin", resource => decodeDataURI(resource)); |
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} |
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); |
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} |
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} |
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module.exports = DataUriPlugin;
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