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const fs = require("fs")
const path = require("path")
//const svgSprite = require("svg-sprite")
const { JSDOM } = require("jsdom")
//const { optimize } = require("svgo")
const { RawSource } = require("webpack-sources")
// Generate <view>'s for referencing sprites in css
function generateAtlasViews(svgFile, symbolId) {
const dom = new JSDOM(svgFile)
const document = dom.window.document
const svg = document.querySelector("svg")
const symbols = document.querySelectorAll("symbol")
const width = 24
const height = 24
let row = 0
let col = 0
const totalCols = Math.floor(Math.sqrt(symbols.length))
for (const symbol of symbols) {
const x = col * width
const y = row * height
let id = symbol.getAttribute("id")
if (symbolId) {
id = symbolId(id)
symbol.setAttribute("id", id)
}
// Create elements
const svgView = document.createElement("view")
svgView.setAttribute("id", `${id}-view`)
svgView.setAttribute("viewBox", `${x} ${y} ${width} ${height}`)
const svgUse = document.createElement("use")
svgUse.setAttribute("width", width)
svgUse.setAttribute("height", height)
//svgUse.setAttribute("viewBox", "0 -960 960 960")
svgUse.setAttribute("x", x)
svgUse.setAttribute("y", y)
svgUse.setAttribute("href", `#${id}`)
// Append elements
svg.appendChild(svgView)
svg.appendChild(svgUse)
// Adjust row/col
col++
if (col > totalCols) {
col = 0
row++
}
}
const cWidth = (totalCols + 1) * width
const cHeight = (row + 1) * height
svg.setAttribute("viewBox", `0 0 ${cWidth} ${cHeight}`)
svg.setAttribute("width", `${cWidth}px`)
svg.setAttribute("height", `${cHeight}px`)
const svgStr = svg.outerHTML.replaceAll("viewbox", "viewBox") /* JSDOM will lower-case all attributes */
return svgStr
}
class SVGSymbolAtlasViewPlugin {
constructor(options = {}) {
this.suffix = options.suffix || ".svg"
this.symbolId = options.symbolId || null
}
apply(compiler) {
compiler.hooks.thisCompilation.tap("SVGSymbolAtlasViewPlugin", (compilation) => {
compilation.hooks.processAssets.tap(
{
name: "SVGSymbolAtlasViewPlugin",
stage: compiler.webpack.Compilation.PROCESS_ASSETS_STAGE_OPTIMIZE,
},
(assets) => {
for (const assetName in assets) {
if (assetName.endsWith(this.suffix)) {
const originalSVG = assets[assetName].source().toString()
const atlasSVG = generateAtlasViews(originalSVG, this.symbolId)
// Replace old SVG asset with new SVG
compilation.updateAsset(assetName, new RawSource(atlasSVG))
}
}
}
)
})
}
}
module.exports = SVGSymbolAtlasViewPlugin
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