6

util/common.js

@@ -50,6 +50,96 @@ export const getDbDir = () => {
 		});
 	});
 };
+export const formatIndexListData = (list, key = "nickname") => {
+	// 兼容：list 为数组，数组元素可以是字符串或对象；key 为要分组的字段名（若元素为字符串则忽略 key）
+	if (!Array.isArray(list) || list.length === 0) return [];
+
+	const ucfirst = (l1) => {
+		if (!l1) return "";
+		if (l1.length > 0) {
+			var first = l1.substr(0, 1).toUpperCase();
+			var spare = l1.substr(1, l1.length);
+			return first + spare;
+		}
+		return l1;
+	};
+
+	const arraySearch = (l1) => {
+		for (var name in PinYin) {
+			if (PinYin[name].indexOf(l1) != -1) {
+				return ucfirst(name);
+			}
+		}
+		return false;
+	};
+
+	// 将字符串转为可排序的拼音/字母表示
+	const codefans = (l1) => {
+		l1 = l1 ?? "";
+		var l2 = l1.length;
+		var I1 = "";
+		var reg = new RegExp("[a-zA-Z0-9- ]");
+		for (var i = 0; i < l2; i++) {
+			var val = l1.substr(i, 1);
+			var name = arraySearch(val);
+			if (reg.test(val)) {
+				I1 += val;
+			} else if (name !== false) {
+				I1 += name;
+			}
+		}
+		I1 = I1.replace(/ /g, "-");
+		while (I1.indexOf("--") > 0) {
+			I1 = I1.replace("--", "-");
+		}
+		return I1;
+	};
+
+	// 构建分组 map
+	const groups = {};
+	for (let i = 0; i < list.length; i++) {
+		const item = list[i];
+		const val = (typeof item === "string") ? item : (item && item[key]) ? item[key] : "";
+		const coded = codefans(String(val));
+		let initial = (coded && coded.length > 0) ? coded.substr(0, 1).toUpperCase() : "#";
+		if (!/^[A-Z]$/.test(initial)) initial = "#";
+		if (!groups[initial]) groups[initial] = [];
+		groups[initial].push({
+			raw: item,
+			sortKey: coded || String(val)
+		});
+	}
+
+	// 按字母顺序构建结果，A-Z 然后 #
+	const letters = Object.keys(groups).filter((l) => l !== "#").sort();
+	const result = [];
+	for (const L of letters) {
+		// 组内按照 sortKey 排序
+		groups[L].sort((a, b) => {
+			if (a.sortKey < b.sortKey) return -1;
+			if (a.sortKey > b.sortKey) return 1;
+			return 0;
+		});
+		result.push({
+			letter: L,
+			data: groups[L].map((x) => x.raw)
+		});
+	}
+	// 特殊字符组放最后
+	if (groups["#"] && groups["#"].length > 0) {
+		groups["#"].sort((a, b) => {
+			if (a.sortKey < b.sortKey) return -1;
+			if (a.sortKey > b.sortKey) return 1;
+			return 0;
+		});
+		result.push({
+			letter: "#",
+			data: groups["#"].map((x) => x.raw)
+		});
+	}
+
+	return result;
+}
 
 export const formatChooseData = (data, key = "nickname") => {
 	const ucfirst = (l1) => {