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using System.Collections.Generic;
using System.IO;
namespace StardewModdingAPI.Toolkit.Utilities.PathLookups
{
/// <summary>An API for file lookups within a root directory with minimal preprocessing.</summary>
internal class MinimalFileLookup : IFileLookup
{
/*********
** Accessors
*********/
/// <summary>The file lookups by root path.</summary>
private static readonly Dictionary<string, MinimalFileLookup> CachedRoots = new();
/// <summary>The root directory path for relative paths.</summary>
private readonly string RootPath;
/*********
** Public methods
*********/
/// <summary>Construct an instance.</summary>
/// <param name="rootPath">The root directory path for relative paths.</param>
public MinimalFileLookup(string rootPath)
{
this.RootPath = rootPath;
}
/// <inheritdoc />
public FileInfo GetFile(string relativePath)
{
return new(
Path.Combine(this.RootPath, PathUtilities.NormalizePath(relativePath))
);
}
/// <inheritdoc />
public void Add(string relativePath) { }
/// <summary>Get a cached dictionary of relative paths within a root path, for case-insensitive file lookups.</summary>
/// <param name="rootPath">The root path to scan.</param>
public static MinimalFileLookup GetCachedFor(string rootPath)
{
rootPath = PathUtilities.NormalizePath(rootPath);
if (!MinimalFileLookup.CachedRoots.TryGetValue(rootPath, out MinimalFileLookup? lookup))
MinimalFileLookup.CachedRoots[rootPath] = lookup = new MinimalFileLookup(rootPath);
return lookup;
}
}
}
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