init

uni_modules/lime-shared/characterLimit/index.ts

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+// @ts-nocheck
+/**
+ * 计算字符串字符的长度并可以截取字符串。
+ * @param char 传入字符串（maxcharacter条件下，一个汉字表示两个字符）
+ * @param max 规定最大字符串长度
+ * @returns 当没有传入maxCharacter/maxLength 时返回字符串字符长度，当传入maxCharacter/maxLength时返回截取之后的字符串和长度。
+ */
+export type CharacterLengthResult = {
+	length : number;
+	characters : string;
+}
+// #ifdef APP-ANDROID
+type ChartType = any
+// #endif
+// #ifndef APP-ANDROID
+type ChartType = string | number
+// #endif
+
+export function characterLimit(type : string, char : ChartType, max : number) : CharacterLengthResult {
+	const str = `${char}`;
+
+	if (str.length == 0) {
+		return {
+			length: 0,
+			characters: '',
+		} as CharacterLengthResult
+	}
+
+	if (type == 'maxcharacter') {
+		let len = 0;
+		for (let i = 0; i < str.length; i += 1) {
+			let currentStringLength : number// = 0;
+			const code = str.charCodeAt(i)!
+			if (code > 127 || code == 94) {
+				currentStringLength = 2;
+			} else {
+				currentStringLength = 1;
+			}
+			if (len + currentStringLength > max) {
+				return {
+					length: len,
+					characters: str.slice(0, i),
+				} as CharacterLengthResult
+			}
+			len += currentStringLength;
+		}
+		return {
+			length: len,
+			characters: str,
+		} as CharacterLengthResult
+	} else if (type == 'maxlength') {
+		const length = str.length > max ? max : str.length;
+		return {
+			length: length,
+			characters: str.slice(0, length),
+		} as CharacterLengthResult
+	}
+
+	return {
+		length: str.length,
+		characters: str,
+	} as CharacterLengthResult
+};