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