1 files changed, 76 insertions, 0 deletions
diff --git a/web/source/lib/split-css.js b/web/source/lib/split-css.js
new file mode 100644
index 000000000..fb8694095
--- /dev/null
+++ b/web/source/lib/split-css.js
@@ -0,0 +1,76 @@
+/*
+   GoToSocial
+   Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+"use strict";
+
+const fs = require("fs");
+const path = require("path");
+
+const {Writable} = require("stream");
+const {out} = require("../index.js");
+
+const fromRegex = /\/\* from (.+?) \*\//;
+module.exports = function splitCSS() {
+	let chunks = [];
+	return new Writable({
+		write: function(chunk, encoding, next) {
+			chunks.push(chunk);
+			next();
+		},
+		final: function() {
+			let stream = chunks.join("");
+			let input;
+			let content = [];
+
+			function write() {
+				if (content.length != 0) {
+					if (input == undefined) {
+						throw new Error("Got CSS content without filename, can't output: ", content);
+					} else {
+						console.log("writing to", out(input));
+						fs.writeFileSync(out(input), content.join("\n"));
+					}
+					content = [];
+				}
+			}
+
+			const cssDir = path.join(__dirname, "../css");
+
+			stream.split("\n").forEach((line) => {
+				if (line.startsWith("/* from")) {
+					let found = fromRegex.exec(line);
+					if (found != null) {
+						write();
+
+						let parts = path.parse(found[1]);
+						if (path.relative(cssDir, path.join(process.cwd(), parts.dir)) == "") {
+							input = parts.base;
+						} else {
+							// prefix filename with path
+							let relative = path.relative(path.join(__dirname, "../"), path.join(process.cwd(), found[1]));
+							input = relative.replace(/\//g, "-");
+						}
+					}
+				} else {
+					content.push(line);
+				}
+			});
+			write();
+		}
+	});
+};