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- using System;
- using System.Collections.Generic;
- using System.IO;
- using System.Linq;
- using System.Reflection;
- namespace BepInEx
- {
- /// <summary>
- /// Generic helper properties and methods.
- /// </summary>
- public static class Utility
- {
- /// <summary>
- /// Combines multiple paths together, as the specfic method is not availble in .NET 3.5.
- /// </summary>
- /// <param name="parts">The multiple paths to combine together.</param>
- /// <returns>A combined path.</returns>
- public static string CombinePaths(params string[] parts) => parts.Aggregate(Path.Combine);
- /// <summary>
- /// Tries to parse a bool, with a default value if unable to parse.
- /// </summary>
- /// <param name="input">The string to parse</param>
- /// <param name="defaultValue">The value to return if parsing is unsuccessful.</param>
- /// <returns>Boolean value of input if able to be parsed, otherwise default value.</returns>
- public static bool SafeParseBool(string input, bool defaultValue = false)
- {
- return bool.TryParse(input, out bool result) ? result : defaultValue;
- }
- /// <summary>
- /// Converts a file path into a UnityEngine.WWW format.
- /// </summary>
- /// <param name="path">The file path to convert.</param>
- /// <returns>A converted file path.</returns>
- public static string ConvertToWWWFormat(string path)
- {
- return $"file://{path.Replace('\\', '/')}";
- }
- /// <summary>
- /// Indicates whether a specified string is null, empty, or consists only of white-space characters.
- /// </summary>
- /// <param name="self">The string to test.</param>
- /// <returns>True if the value parameter is null or empty, or if value consists exclusively of white-space characters.</returns>
- public static bool IsNullOrWhiteSpace(this string self)
- {
- return self == null || self.Trim().Length == 0;
- }
- public static IEnumerable<TNode> TopologicalSort<TNode>(IEnumerable<TNode> nodes, Func<TNode, IEnumerable<TNode>> dependencySelector)
- {
- List<TNode> nodeQueue = new List<TNode>(nodes);
- List<TNode> sorted = new List<TNode>();
- while (nodeQueue.Count > 0)
- {
- List<TNode> nextBatch = nodeQueue.Where(x => !dependencySelector(x).Except(sorted).Intersect(nodeQueue).Any()).ToList();
- if (!nextBatch.Any())
- throw new Exception("Cyclic Dependency:\r\n" +
- nodeQueue.Select(x => x.ToString()).Aggregate((a , b) => $"{a}\r\n{b}"));
- sorted.AddRange(nextBatch);
- foreach (TNode item in nextBatch)
- nodeQueue.Remove(item);
- }
- return sorted;
- }
- /// <summary>
- /// Try to resolve and load the given assembly DLL.
- /// </summary>
- /// <param name="assemblyName">Name of the assembly, of the type <see cref="AssemblyName" />.</param>
- /// <param name="directory">Directory to search the assembly from.</param>
- /// <param name="assembly">The loaded assembly.</param>
- /// <returns>True, if the assembly was found and loaded. Otherwise, false.</returns>
- public static bool TryResolveDllAssembly(AssemblyName assemblyName, string directory, out Assembly assembly)
- {
- assembly = null;
- string path = Path.Combine(directory, $"{assemblyName.Name}.dll");
- if (!File.Exists(path))
- return false;
- try
- {
- assembly = Assembly.LoadFile(path);
- }
- catch (Exception)
- {
- return false;
- }
- return true;
- }
- }
- }
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