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