feat(cli): 重构删除命令并增强日期时间处理功能

- 重写Delete子命令参数结构，使用start和count替代range参数
- 添加-y/--yes选项用于跳过删除确认提示
- 新增日期时间解析和转换辅助函数支持
- 实现Excel序列号与Chrono时间类型的相互转换
- 增强单元格值获取函数支持日期格式化显示
- 修改插入和更新函数支持日期时间值的自动识别和格式化
- 优化删除命令的行号解析逻辑支持负数索引
- 改进安全保存函数的备份和恢复机制

dexcel/src/main.rs

@@ -154,8 +154,15 @@ enum Commands {
     },
     /// 删除行
     Delete {
-        #[arg(num_args = 1..=2, allow_hyphen_values = true, value_delimiter = ' ')]
-        range: Vec<i32>,
+        /// 起始行号（支持负数）
+        #[arg(allow_hyphen_values = true)]
+        start: i32,
+        /// 删除的行数（默认1）
+        #[arg(long, default_value_t = 1)]
+        count: u32,
+        /// 跳过确认
+        #[arg(long, short = 'y')]
+        yes: bool,
         #[arg(long)]
         sheet: Option<String>,
     },
@@ -314,10 +321,10 @@ fn main() -> Result<()> {
             update_excel(&mut book, value, *row, *cell, sheet, split)?;
             safe_save_umya(&mut book, file)
         }
-        Commands::Delete { range, sheet } => {
+        Commands::Delete { start, count, yes, sheet } => {
             let file = cli.file.as_ref().unwrap();
             let mut book = reader::xlsx::read(file).map_err(|e| DexcelError::Umya(e.to_string()))?;
-            delete_excel(&mut book, range, sheet)?;
+            delete_excel(&mut book, *start, *count, *yes, sheet)?;
             safe_save_umya(&mut book, file)
         }
         Commands::Style { rows, cols, row_height, col_width, wrap_text, sheet } => {
@@ -495,26 +502,29 @@ fn update_excel(
 
 fn delete_excel(
     book: &mut Spreadsheet,
-    range: &[i32],
+    start: i32,
+    count: u32,
+    yes: bool,
     sheet_name: &Option<String>,
 ) -> Result<()> {
     let sheet = get_sheet_mut(book, sheet_name)?;
     let (_, max_row) = sheet.get_highest_column_and_row();
 
-    let (start_del, end_del) = match range {
-        [n] if n > &0 => (1, *n as u32),
-        [n] if n < &0 => {
-            let count = (-n) as u32;
-            (max_row - count + 1, max_row)
-        },
-        [a, b] => {
-            if a <= &0 || b < a { return Err(DexcelError::Operation("范围无效".into())); }
-            (*a as u32, *b as u32)
-        }
-        _ => return Err(DexcelError::Operation("参数错误".into())),
+    // 解析起始行 (转为 1-based)
+    let start_del = if start < 0 {
+        // 负数：从后往前数
+        let pos = (max_row as i32 + start + 1).max(1) as u32;
+        pos
+    } else {
+        // 正数：直接使用
+        start.max(1) as u32
     };
 
-    eprintln!("⚠ 即将删除第 {} 至 {} 行", start_del, end_del);
+    let end_del = (start_del + count - 1).min(max_row);
+
+    // 确认
+    if !yes {
+        eprintln!("⚠ 即将删除第 {} 至 {} 行（共 {} 行）", start_del, end_del, count);
         eprint!("确认? (y/N): ");
         std::io::stdout().flush()?;
         let mut input = String::new();
@@ -523,11 +533,12 @@ fn delete_excel(
             println!("操作已取消");
             return Ok(());
         }
+    }
 
-    let num_to_del = end_del - start_del + 1;
-    sheet.remove_row(&start_del, &num_to_del);
+    // 调用 umya 的删除方法
+    sheet.remove_row(&start_del, &count);
 
-    println!("✓ 删除完成");
+    println!("✓ 已删除第 {} 至 {} 行（共 {} 行）", start_del, end_del, count);
     Ok(())
 }