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Add Unix implementation matching docs for GetRelativePath, add tests

This commit is contained in:
YoshiRulz 2021-01-31 10:53:16 +10:00
parent f26ba1dca5
commit 68659055cb
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GPG Key ID: C4DE31C245353FB7
2 changed files with 19 additions and 6 deletions
src
BizHawk.Common/Extensions
PathExtensions.cs
BizHawk.Tests/PlatformTests/Common.PathExtensions
PathExtensionTests.cs

8
src/BizHawk.Common/Extensions/PathExtensions.cs
View File

@ -58,7 +58,11 @@ namespace BizHawk.Common.PathExtensions
public static string? GetRelativePath(string? fromPath, string? toPath)
{
if (fromPath == null || toPath == null) return null;
if (OSTailoredCode.IsUnixHost) return toPath.MakeRelativeTo(fromPath);
if (OSTailoredCode.IsUnixHost)
{
var realpathOutput = OSTailoredCode.SimpleSubshell("realpath", $"--relative-to=\"{fromPath}\" \"{toPath}\"", $"invalid path {toPath}, invalid path {fromPath}, or missing realpath binary");
return !realpathOutput.StartsWith("../") && realpathOutput != "." && realpathOutput != ".." ? $"./{realpathOutput}" : realpathOutput;
}
//TODO merge this with the Windows implementation in MakeRelativeTo
static FileAttributes GetPathAttribute(string path1)
@ -101,7 +105,7 @@ namespace BizHawk.Common.PathExtensions
if (!absolutePath.IsSubfolderOf(basePath)) return absolutePath;
if (!OSTailoredCode.IsUnixHost) return absolutePath.Replace(basePath, ".").RemoveSuffix(Path.DirectorySeparatorChar);
#if true // Unix implementation using realpath
var realpathOutput = OSTailoredCode.SimpleSubshell("realpath", $"--relative-to=\"{basePath}\" \"{absolutePath}\"", $"invalid path {absolutePath}, invalid path {basePath}, or missing realpath binary");
var realpathOutput = OSTailoredCode.SimpleSubshell("realpath", $"--relative-base=\"{basePath}\" \"{absolutePath}\"", $"invalid path {absolutePath}, invalid path {basePath}, or missing realpath binary");
return !realpathOutput.StartsWith("../") && realpathOutput != "." && realpathOutput != ".." ? $"./{realpathOutput}" : realpathOutput;
#else // for some reason there were two Unix implementations in the codebase before me? --yoshi
// alt. #1

17
src/BizHawk.Tests/PlatformTests/Common.PathExtensions/PathExtensionTests.cs
View File

@ -58,16 +58,25 @@ namespace BizHawk.Tests.Common.PathExtensions
Assert.AreEqual(expectedIsSubfolder, childPath.IsSubfolderOf(parentPath));
}
#if false // don't bother, GetRelativePath simply calls MakeRelativeTo on Unix
public void TestGetRelativePathUnix() {}
#endif
[TestMethod]
[DataRow("./share", "/usr/share", "/usr")]
[DataRow(".", "/usr", "/usr")]
[DataRow("..", "/usr", "/usr/share")]
[DataRow("../bin", "/usr/bin", "/usr/share")]
[DataRow("../../etc", "/etc", "/usr/share")]
public void TestGetRelativePathUnix(string expectedRelPath, string toPath, string fromPath) // swapped here instead of in data
{
PlatformTestUtils.OnlyRunOnRealUnix();
Assert.AreEqual(expectedRelPath, PE.GetRelativePath(fromPath: fromPath, toPath: toPath));
}
[TestMethod]
[DataRow("./share", "/usr/share", "/usr")]
[DataRow(".", "/usr", "/usr")]
[DataRow("/usr", "/usr", "/usr/share")] // not `..`
[DataRow("/usr/bin", "/usr/bin", "/usr/share")] // not `../bin`
[DataRow("/bin", "/bin", "/usr/share")] // not `../../bin`
[DataRow("/etc", "/etc", "/usr/share")] // not `../../etc`
public void TestMakeRelativeToUnix(string expectedRelPath, string absolutePath, string basePath)
{
PlatformTestUtils.OnlyRunOnRealUnix();