add:自定义文件名

2026-05-01 14:51:56 +08:00
parent 448a695503
commit f15a293a69
9 changed files with 230 additions and 8 deletions
@@ -0,0 +1,68 @@
+using System;
+using System.IO;
+using System.Text.RegularExpressions;
+
+namespace Ink_Canvas.Helpers
+{
+    /// <summary>
+    /// 渲染保存文件名模板。支持占位符: {date} {time} {datetime} {mode} {page} {count} {type}。
+    /// 当模板为空、渲染结果非法或仅含分隔符时，回退到默认时间戳命名。
+    /// </summary>
+    public static class SaveFileNameHelper
+    {
+        private const string DefaultDateTime = "yyyy-MM-dd HH-mm-ss-fff";
+
+        public static string Render(string template, SaveFileNameContext ctx)
+        {
+            if (ctx == null) ctx = new SaveFileNameContext();
+            var now = ctx.Time ?? DateTime.Now;
+
+            if (string.IsNullOrWhiteSpace(template))
+                return now.ToString(DefaultDateTime);
+
+            try
+            {
+                string result = template
+                    .Replace("{date}", now.ToString("yyyy-MM-dd"))
+                    .Replace("{time}", now.ToString("HH-mm-ss"))
+                    .Replace("{datetime}", now.ToString(DefaultDateTime))
+                    .Replace("{mode}", ctx.Mode ?? "")
+                    .Replace("{page}", ctx.Page?.ToString() ?? "")
+                    .Replace("{count}", ctx.Count?.ToString() ?? "")
+                    .Replace("{type}", ctx.Type ?? "");
+
+                result = SanitizeFileName(result);
+
+                if (string.IsNullOrWhiteSpace(result) || Regex.IsMatch(result, @"^[\s\-_]+$"))
+                    return now.ToString(DefaultDateTime);
+
+                return result;
+            }
+            catch
+            {
+                return now.ToString(DefaultDateTime);
+            }
+        }
+
+        private static string SanitizeFileName(string name)
+        {
+            if (string.IsNullOrEmpty(name)) return name;
+            foreach (var c in Path.GetInvalidFileNameChars())
+            {
+                name = name.Replace(c, '_');
+            }
+            return name.Trim();
+        }
+    }
+
+    public class SaveFileNameContext
+    {
+        public DateTime? Time { get; set; }
+        /// <summary>"Annotation" or "BlackBoard" or "Screenshot" etc.</summary>
+        public string Mode { get; set; }
+        /// <summary>"User" or "Auto"</summary>
+        public string Type { get; set; }
+        public int? Page { get; set; }
+        public int? Count { get; set; }
+    }
+}