59 lines
1.5 KiB
C#
59 lines
1.5 KiB
C#
using System;
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using System.Collections.Generic;
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using Gallium;
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using Zio;
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namespace Nitride.IO.Paths
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{
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/// <summary>
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/// An operation that removes a path prefix from the input.
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/// </summary>
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[WithProperties]
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public partial class RemovePathPrefix : INitrideOperation
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{
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public RemovePathPrefix()
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{
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}
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public RemovePathPrefix(UPath pathPrefix)
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{
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this.PathPrefix = pathPrefix;
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}
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/// <summary>
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/// Gets or sets the prefix for the path operations.
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/// </summary>
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public UPath? PathPrefix { get; set; }
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public IEnumerable<Entity> Run(IEnumerable<Entity> input)
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{
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if (this.PathPrefix == null)
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{
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throw new InvalidOperationException(
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nameof(RemovePathPrefix)
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+ ".Prefix was not set "
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+ "(via constructor, property, or SetPrefix) before "
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+ "Replace() was called.");
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}
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ReplacePaths replacePaths = new ReplacePaths()
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.WithReplacement(this.RunReplacement);
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return replacePaths.Run(input);
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}
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private UPath RunReplacement(Entity _, UPath path)
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{
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string normalized = path.ToString();
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string prefix = this.PathPrefix.ToString()!;
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if (normalized.StartsWith(prefix))
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{
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return (UPath)path.ToString().Substring(prefix.Length);
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}
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return path;
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}
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}
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}
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