Dnspy/dnSpy/dnSpy.Decompiler/FilenameUtils.cs

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2021-09-20 18:20:01 +02:00
/*
Copyright (C) 2014-2019 de4dot@gmail.com
This file is part of dnSpy
dnSpy is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
dnSpy is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.Generic;
using System.IO;
namespace dnSpy.Decompiler {
public static class FilenameUtils {
static readonly HashSet<string> ReservedFileNames = new HashSet<string>(StringComparer.OrdinalIgnoreCase) {
"CON", "PRN", "AUX", "NUL",
"COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
"LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9",
};
static readonly HashSet<char> invalidFileNameChars = new HashSet<char>(Path.GetInvalidFileNameChars());
public static string CleanName(string text) {
int pos = text.IndexOf(':');
if (pos > 0)
text = text.Substring(0, pos);
pos = text.IndexOf('`');
if (pos > 0)
text = text.Substring(0, pos);
text = text.Trim();
char[]? textChars = null;
for (int i = 0; i < text.Length; i++) {
if (invalidFileNameChars.Contains(text[i])) {
if (textChars is null)
textChars = text.ToCharArray();
textChars[i] = '-';
}
}
if (textChars is not null)
text = new string(textChars);
if (ReservedFileNames.Contains(text))
text = text + "_";
return text;
}
// ("C:\dir1\dir2\dir3", "d:\Dir1\Dir2\Dir3\file.dll") = "d:\Dir1\Dir2\Dir3\file.dll"
// ("C:\dir1\dir2\dir3", "c:\Dir1\dirA\dirB\file.dll") = "..\..\dirA\dirB\file.dll"
// ("C:\dir1\dir2\dir3", "c:\Dir1\Dir2\Dir3\Dir4\Dir5\file.dll") = "Dir4\Dir5\file.dll"
internal static string GetRelativePath(string sourceDir, string destFile) {
sourceDir = Path.GetFullPath(sourceDir);
destFile = Path.GetFullPath(destFile);
if (!Path.GetPathRoot(sourceDir)!.Equals(Path.GetPathRoot(destFile), StringComparison.OrdinalIgnoreCase))
return destFile;
var sourceDirs = GetPathNames(sourceDir);
var destDirs = GetPathNames(Path.GetDirectoryName(destFile)!);
var hintPath = string.Empty;
int i;
for (i = 0; i < sourceDirs.Count && i < destDirs.Count; i++) {
if (!sourceDirs[i].Equals(destDirs[i], StringComparison.OrdinalIgnoreCase))
break;
}
for (int j = i; j < sourceDirs.Count; j++)
hintPath = Path.Combine(hintPath, "..");
for (; i < destDirs.Count; i++)
hintPath = Path.Combine(hintPath, destDirs[i]);
hintPath = Path.Combine(hintPath, Path.GetFileName(destFile));
return hintPath;
}
static List<string> GetPathNames(string path) {
var list = new List<string>();
var root = Path.GetPathRoot(path);
while (path != root) {
list.Add(Path.GetFileName(path));
path = Path.GetDirectoryName(path)!;
}
list.Add(root);
list.Reverse();
return list;
}
}
}