using System;
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using System.ComponentModel;
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using System.IO;
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using System.Numerics;
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using System.Runtime.CompilerServices;
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namespace OpenTap.Addin.Util
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{
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public class LocationString : INotifyPropertyChanged
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{
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#region ...
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public event PropertyChangedEventHandler PropertyChanged;
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public void OnPropertyChanged(string propertyName)
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{
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PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
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UserInput.NotifyChanged(this, propertyName);
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}
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protected void Set([CallerMemberName] string name = null)
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{
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OnPropertyChanged(name);
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}
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protected void Set<T>(ref T old, T @new, [CallerMemberName] string propertyName = null)
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{
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old = @new;
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if (propertyName != null)
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{
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Set(propertyName);
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}
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}
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#endregion
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private string relativeLocation = string.Empty;
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public string RelativeLocation
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{
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get => relativeLocation;
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set
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{
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Set(ref relativeLocation, value);
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}
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}
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private string absoluteLocation = string.Empty;
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public string AbsoluteLocation
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{
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get => absoluteLocation;
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set
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{
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Set(ref absoluteLocation, value);
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}
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}
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private static string AppendDirectorySeparator(string path)
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{
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// 如果是目录路径，确保以分隔符结尾
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if (!path.EndsWith(Path.DirectorySeparatorChar.ToString()) &&
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!path.EndsWith(Path.AltDirectorySeparatorChar.ToString()))
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{
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// 检查是否是目录（简单判断：没有扩展名或明确是目录）
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if (Directory.Exists(path))
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path += Path.DirectorySeparatorChar;
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}
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return path;
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}
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public static string GetRelativePath(string fromPath, string toPath)
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{
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// 获取绝对路径
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fromPath = Path.GetFullPath(fromPath);
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toPath = Path.GetFullPath(toPath);
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// 如果路径不在同一根目录下（如 C:\ 和 D:\），无法计算相对路径
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if (!string.Equals(Path.GetPathRoot(fromPath),
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Path.GetPathRoot(toPath),
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StringComparison.OrdinalIgnoreCase))
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{
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return toPath; // 返回绝对路径
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}
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// 使用 Uri 计算相对路径
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Uri fromUri = new Uri(AppendDirectorySeparator(fromPath));
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Uri toUri = new Uri(AppendDirectorySeparator(toPath));
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Uri relativeUri = fromUri.MakeRelativeUri(toUri);
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string relativePath = Uri.UnescapeDataString(relativeUri.ToString());
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// 转换为文件路径格式
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relativePath = relativePath.Replace('/', Path.DirectorySeparatorChar);
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// 移除开头的分隔符（如果有）
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if (relativePath.StartsWith(Path.DirectorySeparatorChar.ToString()))
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relativePath = relativePath.Substring(1);
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return relativePath;
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}
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public static string GetAbsolutePath(string basePath, string relativePath)
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{
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if (string.IsNullOrEmpty(basePath))
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{
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return relativePath;
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}
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string dirPath = Path.GetDirectoryName(basePath);
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string combinedPath = Path.Combine(dirPath, relativePath);
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return Path.GetFullPath(combinedPath);
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}
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public void Refresh(string basePath)
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{
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if (string.IsNullOrEmpty(basePath))
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{
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return;
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}
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string path = LocationString.GetAbsolutePath(basePath, RelativeLocation);
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if (File.Exists(path))
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{
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if (Path.IsPathRooted(RelativeLocation))
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{
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RelativeLocation = LocationString.GetRelativePath(basePath, path);
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}
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AbsoluteLocation = path;
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return;
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}
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if (File.Exists(AbsoluteLocation))
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{
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path = LocationString.GetRelativePath(basePath, AbsoluteLocation);
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RelativeLocation = path;
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return;
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}
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}
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public bool GetLocation(string basePath, out string location)
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{
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location = null;
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if (Path.IsPathRooted(RelativeLocation))
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{
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if (File.Exists(RelativeLocation))
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{
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location = RelativeLocation;
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return true;
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}
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}
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else
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{
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string path = GetAbsolutePath(basePath, RelativeLocation);
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if (File.Exists(path))
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{
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location = path;
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return true;
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}
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}
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if (File.Exists(AbsoluteLocation))
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{
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location = AbsoluteLocation;
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return true;
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}
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return false;
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}
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}
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}
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