feat(common): ✨ 添加input-rules

packages/common/src/index.ts

@@ -3,3 +3,4 @@ export * from "./permission";
 export * from "./printer";
 export * from "./time";
 export * from "./timer";
+export * from "./input-rule";

packages/common/src/input-rule.ts

@@ -0,0 +1,163 @@
+/*
+ * @file: /src/input-rule.ts
+ * @description: 限制输入框输入的规则
+ * @author: tsl (randy1924@163.com)
+ * @date: 2026-03-18 13:37:11
+ * @lastModified: 2026-03-18 15:04:44
+ * @lastModifiedBy: tsl (randy1924@163.com)
+ */
+
+export type InputValue = string | number | null;
+export interface InputOptions {
+  min?: number; // 最小值
+  max?: number; // 最大值
+  init?: string | number; // 初始值
+  digits?: number; // 小数位数
+  pattern?: string | RegExp; // 匹配模式
+  required?: boolean; // 是否必填
+  integer?: boolean; // 是否整数
+  number?: boolean; // 是否转成数字
+  text?: boolean; // 是否使用文本模式
+  floor?: boolean; // 是否向下取数
+  ceil?: boolean; // 是否向上取数
+  keepDecimal?: boolean; // 是否保留小数，即使是小数位是0
+  noSign?: boolean; // 不允许输入正负号
+}
+
+/**
+ * 根据规则获取目标值
+ * @example
+ * 限制输入的最小值：0，最大值：99999.99，必填，小数位数：2
+ * const value = getValueOfRule(e.detail.value, {
+ *   min: 0,
+ *   max: 99999.99,
+ *   required: true,
+ *   digits: 2,
+ * })
+ */
+export function getValueOfRule(
+  value: InputValue,
+  options: InputOptions,
+  callback?: (value: InputValue) => void,
+): InputValue {
+  console.log("getValueOfRule", value, options);
+
+  const { text } = options;
+
+  let targetValue: InputValue;
+  if (text) {
+    targetValue = getTextTargetValue(value, options);
+  } else {
+    targetValue = getNumberTargetValue(value, options);
+  }
+
+  console.log("targetValue", targetValue);
+  callback?.(targetValue);
+  return targetValue;
+}
+
+/**
+ * 根据输入的获取处理后值-文本类型
+ */
+function getTextTargetValue(innerValue: InputValue, options: InputOptions): InputValue {
+  const { required, init, pattern, number } = options;
+
+  innerValue ??= "";
+
+  innerValue = String(innerValue);
+  let targetValue: string | number = innerValue;
+
+  // 如果提供了pattern参数，检查输入是否匹配该模式
+  if (pattern && !new RegExp(pattern).test(innerValue)) {
+    return "";
+  }
+
+  if (!/^[+-]?\d+(\.\d+)?$/.test(innerValue)) {
+    if (required) {
+      if (init !== undefined) {
+        targetValue = String(init);
+      }
+    }
+  }
+
+  if (number) {
+    targetValue = Number(targetValue);
+  }
+
+  return targetValue;
+}
+
+/**
+ * 根据 floor/ceil 选项选择取整方式
+ */
+function getRoundFn(floor?: boolean, ceil?: boolean): (n: number) => number {
+  if (floor) return Math.floor;
+  if (ceil) return Math.ceil;
+  return Math.round;
+}
+
+/**
+ * 判断字符串是否为合法数字输入
+ */
+function isValidNumberInput(value: string, noSign?: boolean): boolean {
+  if (!value) return false;
+  if (!/^[+-]?\d+(\.\d+)?$/.test(value)) return false;
+  if (noSign && /[+-]/.test(value)) return false;
+  return true;
+}
+
+/**
+ * 获取非法输入时的回退值
+ */
+function getFallbackValue(options: InputOptions): string {
+  const { required, init, min } = options;
+  if (!required) return "";
+  if (init != null) return String(init);
+  return min == null ? "0" : String(min);
+}
+
+/**
+ * 对数字应用精度和取整处理
+ */
+function applyPrecision(num: number, options: InputOptions): number {
+  const { digits, integer, floor, ceil, min, max } = options;
+  let result = num;
+
+  if (min != null) result = Math.max(result, min);
+  if (max != null) result = Math.min(result, max);
+
+  const roundFn = getRoundFn(floor, ceil);
+
+  if (digits != null) {
+    const precision = Math.pow(10, digits);
+    result = roundFn(result * precision) / precision;
+  }
+
+  if (integer) {
+    result = roundFn(result);
+  }
+
+  return result;
+}
+
+/**
+ * 根据输入的获取处理后值-数字类型
+ */
+function getNumberTargetValue(innerValue: InputValue, options: InputOptions): InputValue {
+  const { number, keepDecimal, noSign, digits } = options;
+  const strValue = String(innerValue ?? "");
+
+  let targetValue: string;
+
+  if (isValidNumberInput(strValue, noSign)) {
+    targetValue = String(applyPrecision(Number(strValue), options));
+  } else {
+    targetValue = getFallbackValue(options);
+  }
+
+  if (digits != null && keepDecimal) {
+    targetValue = Number(targetValue).toFixed(digits);
+  }
+
+  return number ? Number(targetValue) : targetValue;
+}