二次开发源码提交

2026-05-15 08:52:48 +08:00
parent 4131f7321a
commit eb35a1d067
191 changed files with 34566 additions and 0 deletions
@@ -0,0 +1,78 @@
+import 'package:intl/intl.dart';
+
+/// 日期工具类
+class DateUtils {
+  /// 格式化日期
+  static String formatDate(DateTime? date, {String pattern = 'yyyy-MM-dd'}) {
+    if (date == null) return '-';
+    final localDate = date.isUtc ? date.toLocal() : date;
+    return DateFormat(pattern).format(localDate);
+  }
+
+  /// 格式化日期时间
+  static String formatDateTime(DateTime? dateTime) {
+    return formatDate(dateTime, pattern: 'yyyy-MM-dd HH:mm:ss');
+  }
+
+  /// 格式化时间
+  static String formatTime(DateTime? dateTime) {
+    return formatDate(dateTime, pattern: 'HH:mm:ss');
+  }
+
+  /// 格式化文件大小
+  static String formatFileSize(int? bytes) {
+    if (bytes == null || bytes < 0) return '0 B';
+
+    const units = ['B', 'KB', 'MB', 'GB', 'TB'];
+    double size = bytes.toDouble();
+    int unitIndex = 0;
+
+    while (size >= 1024 && unitIndex < units.length - 1) {
+      size /= 1024;
+      unitIndex++;
+    }
+
+    return '${size.toStringAsFixed(2)} ${units[unitIndex]}';
+  }
+
+  /// 获取相对时间描述
+  static String getRelativeTime(DateTime? dateTime) {
+    if (dateTime == null) return '-';
+
+    final now = DateTime.now();
+    final difference = now.difference(dateTime);
+
+    if (difference.inSeconds < 60) {
+      return '${difference.inSeconds}秒前';
+    } else if (difference.inMinutes < 60) {
+      return '${difference.inMinutes}分钟前';
+    } else if (difference.inHours < 24) {
+      return '${difference.inHours}小时前';
+    } else if (difference.inDays < 30) {
+      return '${difference.inDays}天前';
+    } else if (difference.inDays < 365) {
+      return '${(difference.inDays / 30).floor()}个月前';
+    } else {
+      return '${(difference.inDays / 365).floor()}年前';
+    }
+  }
+
+  /// 判断是否为今天
+  static bool isToday(DateTime? dateTime) {
+    if (dateTime == null) return false;
+    final now = DateTime.now();
+    return dateTime.year == now.year &&
+        dateTime.month == now.month &&
+        dateTime.day == now.day;
+  }
+
+  /// 判断是否为昨天
+  static bool isYesterday(DateTime? dateTime) {
+    if (dateTime == null) return false;
+    final now = DateTime.now();
+    final yesterday = now.subtract(const Duration(days: 1));
+    return dateTime.year == yesterday.year &&
+        dateTime.month == yesterday.month &&
+        dateTime.day == yesterday.day;
+  }
+}