add hw2

node_modules/@iconify/utils/lib/svg/defs.js

@@ -0,0 +1,32 @@
+function splitSVGDefs(content, tag = "defs") {
+	let defs = "";
+	const index = content.indexOf("<" + tag);
+	while (index >= 0) {
+		const start = content.indexOf(">", index);
+		const end = content.indexOf("</" + tag);
+		if (start === -1 || end === -1) break;
+		const endEnd = content.indexOf(">", end);
+		if (endEnd === -1) break;
+		defs += content.slice(start + 1, end).trim();
+		content = content.slice(0, index).trim() + content.slice(endEnd + 1);
+	}
+	return {
+		defs,
+		content
+	};
+}
+/**
+* Merge defs and content
+*/
+function mergeDefsAndContent(defs, content) {
+	return defs ? "<defs>" + defs + "</defs>" + content : content;
+}
+/**
+* Wrap SVG content, without wrapping definitions
+*/
+function wrapSVGContent(body, start, end) {
+	const split = splitSVGDefs(body);
+	return mergeDefsAndContent(split.defs, start + split.content + end);
+}
+
+export { mergeDefsAndContent, splitSVGDefs, wrapSVGContent };