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100 lines
3.6 KiB
TypeScript
100 lines
3.6 KiB
TypeScript
/**
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* 文件定义：随机数生成
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*/
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import * as R from 'ramda'
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/* -------------- 1、随机数生成 -------------- */
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/**
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* 生成指定范围内的随机整数
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* @param {number} min - 最小值
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* @param {number} max - 最大值
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* @returns {number} 随机整数
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*/
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export const randomInt = (min: number, max: number): number => {
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return Math.floor(Math.random() * (max - min + 1)) + min
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}
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/**
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* 生成指定长度的随机字符串（默认32位，包括大小写字母和数字，去除0oO1Ii）
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* @param {number} length - 字符串长度
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* @param {object} options - 选项
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* @param {boolean} options.isSpecial - 是否包含特殊字符 (默认不包含)
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* @param {boolean} options.isLower - 是否包含小写字母（默认包含）
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* @param {boolean} options.isUpper - 是否包含大写字母（默认包含）
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* @param {boolean} options.isNumber - 是否包含数字（默认包含）
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* @returns {string} 随机字符串
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*/
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export const randomChart = (
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length: number = 32,
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options: { isSpecial?: boolean; isLower?: boolean; isUpper?: boolean; isNumber?: boolean } = {},
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): string => {
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const { isSpecial = false, isLower = true, isUpper = true, isNumber = true } = options
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let chars = ''
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if (isSpecial) chars += '!@#$%^&*?'
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if (isLower) chars += 'abcdefghijklmnopqrstuvwxyz'
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if (isUpper) chars += 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
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if (isNumber) chars += '0123456789'
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const result = Array.from({ length }, () => chars[Math.floor(Math.random() * chars.length)]).join('')
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console.log('result', result)
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return result
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}
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/**
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* 生成随机字符串，进阶版，支持包含字符最小长度，
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* @param {number} length - 字符串长度
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* @param {object} options - 选项
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* @param {number} options.minUpper - 大写字母最小长度（默认0）
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* @param {number} options.minLower - 小写字母最小长度（默认0）
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* @param {number} options.minNumber - 数字最小长度（默认0）
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* @param {number} options.minSpecial - 特殊字符最小长度（默认0）
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*/
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export const randomChartWithMinLength = (
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length: number = 32,
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options: { minUpper?: number; minLower?: number; minNumber?: number; minSpecial?: number } = {},
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): string => {
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const { minUpper = 1, minLower = 1, minNumber = 1, minSpecial = 0 } = options // 解构赋值，默认值为0
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let result = ''
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const upperChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
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const lowerChars = 'abcdefghijklmnopqrstuvwxyz'
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const numberChars = '0123456789'
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const specialChars = '!@#$%^&*?'
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// 计算已确定的最小字符数
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const minTotal = minUpper + minLower + minNumber + minSpecial
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if (minTotal > length) {
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throw new Error('最小长度要求总和超过了指定的总长度')
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}
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// 生成必需的字符
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const getRandomChars = (chars: string, count: number): string => {
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return Array.from({ length: count }, () => chars[Math.floor(Math.random() * chars.length)]).join('')
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}
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// 添加必需的字符
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if (minUpper > 0) result += getRandomChars(upperChars, minUpper)
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if (minLower > 0) result += getRandomChars(lowerChars, minLower)
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if (minNumber > 0) result += getRandomChars(numberChars, minNumber)
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if (minSpecial > 0) result += getRandomChars(specialChars, minSpecial)
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// 计算剩余需要填充的长度
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const remainingLength = length - minTotal
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// 创建可用字符集合
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let availableChars = ''
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if (minUpper >= 0) availableChars += upperChars
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if (minLower >= 0) availableChars += lowerChars
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if (minNumber >= 0) availableChars += numberChars
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if (minSpecial >= 0) availableChars += specialChars
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// 填充剩余长度
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result += getRandomChars(availableChars, remainingLength)
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// 打乱最终结果
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return result
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.split('')
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.sort(() => Math.random() - 0.5)
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.join('')
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}
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