73 lines
3.6 KiB
C#
73 lines
3.6 KiB
C#
using System;
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using System.Linq;
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using System.Xml.Serialization;
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using System.Collections.Generic;
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using System.Text.RegularExpressions;
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using Avalonia;
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using BFR.Helpers;
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using BFR.DataModels;
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namespace BFR.Operations
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{
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public class Replace : Operation
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{
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public override string Name => nameof(Replace);
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public override string Description => "Replaces the selected part of the file name.";
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public static readonly AvaloniaProperty<ReplaceMode> ModeProperty =
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AvaloniaProperty.Register<MainWindow, ReplaceMode>(nameof(Mode), ReplaceMode.Pattern);
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public ReplaceMode Mode { get => GetValue(ModeProperty); set => SetValue(ModeProperty, value); }
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[XmlIgnore]
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public ReplaceOperationMode[] Modes => ReplaceOperationMode.Modes;
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public string Replacement { get; set; } = "";
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public bool FullName { get; set; } = false;
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public string Pattern { get; set; } = "";
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public bool UseRegex { get; set; } = false;
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public bool UseRegexReplace { get; set; } = false;
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public string Characters { get; set; } = "";
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public int FirstN { get; set; } = 0;
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public int LastN { get; set; } = 0;
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public int FromN { get; set; } = 0;
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public int ToN { get; set; } = 0;
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protected override void ApplyToInternal(IList<FileModel> files)
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{
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// Fail conditions: Various out-of-bounds
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var shortestLength = files.Min(x => FullName ? x.FullName.Length : x.Name.Length);
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if (Mode == ReplaceMode.FirstN && FirstN > shortestLength) throw new OperationException($"First N can't be greater than the shortest file name length ({shortestLength}).");
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if (Mode == ReplaceMode.LastN && LastN > shortestLength) throw new OperationException($"Last N can't be greater than the shortest file name length ({shortestLength}).");
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if (Mode == ReplaceMode.FromNToN && FromN > shortestLength) throw new OperationException($"From N can't be greater than the shortest file name length ({shortestLength}).");
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if (Mode == ReplaceMode.FromNToN && ToN > shortestLength) throw new OperationException($"To N can't be greater than the shortest file name length ({shortestLength}).");
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if (Mode == ReplaceMode.FromNToN && FromN > ToN) throw new OperationException("From N can't be greater than To N.");
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// Regex Failure
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if(Mode == ReplaceMode.Pattern && UseRegex)
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try { "".Replace(Pattern, Replacement, true, false); }
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catch(Exception) { throw new OperationException("Invalid Regex Pattern."); }
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// Apply operation
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foreach(var file in files)
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{
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var newName = FullName ? file.FullName : file.Name;
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newName = Mode switch
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{
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ReplaceMode.Pattern => newName.Replace(Pattern, Replacement, UseRegex, UseRegexReplace),
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ReplaceMode.Characters => Characters.Length > 0 ? Regex.Replace(newName, $"[{Characters}]", Replacement.Replace("$", "$$")) : newName,
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ReplaceMode.FromNToN => Regex.Replace(newName, $"^(.{{{FromN}}}).+(.{{{newName.Length - ToN - 1}}})$", $"$1{Replacement.Replace("$", "$$")}$2"),
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ReplaceMode.FirstN => Regex.Replace(newName, $"^.{{{FirstN}}}", Replacement.Replace("$", "$$")),
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ReplaceMode.LastN => Regex.Replace(newName, $".{{{LastN}}}$", Replacement.Replace("$", "$$")),
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_ => newName
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};
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if (FullName) file.FullName = newName;
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else file.Name = newName;
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}
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}
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}
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}
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