86 lines
3.9 KiB
C#
86 lines
3.9 KiB
C#
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using System;
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using System.Linq;
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using System.Collections.Generic;
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using Avalonia;
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using BFR.Helpers;
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using BFR.DataModels;
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using System.Text.RegularExpressions;
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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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private static readonly ReplaceMode DefaultMode = new ReplaceMode(0, "Pattern");
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public override string Name => "Replace";
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public override string Description => "Replaces the selected part of the file name.";
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public AvaloniaProperty<ReplaceMode> modeProperty =
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AvaloniaProperty.Register<MainWindow, ReplaceMode>(nameof(Mode), defaultValue: DefaultMode);
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public ReplaceMode Mode { get => GetValue(modeProperty); set => SetValue(modeProperty, value); }
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public ReplaceMode[] Modes { get; } = new ReplaceMode[]
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{
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DefaultMode,
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new ReplaceMode(1, "Characters"),
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new ReplaceMode(2, "FromNToN"),
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new ReplaceMode(3, "FirstN"),
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new ReplaceMode(4, "LastN"),
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};
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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 (FirstN > shortestLength) throw new OperationException($"First N can't be greater than the shortest file name length ({shortestLength}).");
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if (LastN > shortestLength) throw new OperationException($"Last N can't be greater than the shortest file name length ({shortestLength}).");
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if (FromN > shortestLength) throw new OperationException($"From N can't be greater than the shortest file name length ({shortestLength}).");
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if (ToN > shortestLength) throw new OperationException($"To N can't be greater than the shortest file name length ({shortestLength}).");
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if (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.IsPatternMode && 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.Index switch
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{
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0 => newName.Replace(Pattern, Replacement, UseRegex, UseRegexReplace),
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1 => Characters.Length > 0 ? Regex.Replace(newName, $"[{Characters}]", Replacement.Replace("$", "$$")) : newName,
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2 => Regex.Replace(newName, $"^(.{{{FromN}}}).+(.{{{newName.Length - ToN - 1}}})$", $"$1{Replacement.Replace("$", "$$")}$2"),
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3 => Regex.Replace(newName, $"^.{{{FirstN}}}", Replacement.Replace("$", "$$")),
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4 => Regex.Replace(newName, $".{{{LastN}}}$", Replacement.Replace("$", "$$")),
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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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private string ReplaceAllCharacters(string input, string characters, string replacement)
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{
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foreach (var character in characters)
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input = input.Replace(character.ToString(), replacement);
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return input;
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}
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}
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}
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