68 lines
2.3 KiB
C#
68 lines
2.3 KiB
C#
using System;
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using System.IO;
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using System.Text.RegularExpressions;
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namespace Ink_Canvas.Helpers
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{
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/// <summary>
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/// 渲染保存文件名模板。支持占位符: {date} {time} {datetime} {mode} {page} {count} {type}。
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/// 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。
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/// </summary>
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public static class SaveFileNameHelper
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{
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private const string DefaultDateTime = "yyyy-MM-dd HH-mm-ss-fff";
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public static string Render(string template, SaveFileNameContext ctx)
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{
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if (ctx == null) ctx = new SaveFileNameContext();
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var now = ctx.Time ?? DateTime.Now;
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if (string.IsNullOrWhiteSpace(template))
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return now.ToString(DefaultDateTime);
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try
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{
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string result = template
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.Replace("{date}", now.ToString("yyyy-MM-dd"))
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.Replace("{time}", now.ToString("HH-mm-ss"))
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.Replace("{datetime}", now.ToString(DefaultDateTime))
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.Replace("{mode}", ctx.Mode ?? "")
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.Replace("{page}", ctx.Page?.ToString() ?? "")
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.Replace("{count}", ctx.Count?.ToString() ?? "")
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.Replace("{type}", ctx.Type ?? "");
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result = SanitizeFileName(result);
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if (string.IsNullOrWhiteSpace(result) || Regex.IsMatch(result, @"^[\s\-_]+$"))
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return now.ToString(DefaultDateTime);
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return result;
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}
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catch
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{
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return now.ToString(DefaultDateTime);
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}
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}
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private static string SanitizeFileName(string name)
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{
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if (string.IsNullOrEmpty(name)) return name;
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foreach (var c in Path.GetInvalidFileNameChars())
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{
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name = name.Replace(c, '_');
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}
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return name.Trim();
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}
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}
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public class SaveFileNameContext
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{
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public DateTime? Time { get; set; }
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/// <summary>"Annotation" or "BlackBoard" or "Screenshot" etc.</summary>
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public string Mode { get; set; }
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/// <summary>"User" or "Auto"</summary>
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public string Type { get; set; }
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public int? Page { get; set; }
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public int? Count { get; set; }
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}
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} |