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//===-- MockSymlinkFileSystem.h
//--------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Utility/FileSpec.h"
#include "llvm/Support/VirtualFileSystem.h"
namespace lldb_private {
// A mock file system that realpath's a given symlink to a given realpath.
class MockSymlinkFileSystem : public llvm::vfs::FileSystem {
public:
// Treat all files as non-symlinks.
MockSymlinkFileSystem() = default;
/// Treat \a symlink as a symlink to \a realpath. Treat all other files as
/// non-symlinks.
MockSymlinkFileSystem(FileSpec &&symlink, FileSpec &&realpath,
FileSpec::Style style = FileSpec::Style::native)
: m_symlink(std::move(symlink)), m_realpath(std::move(realpath)),
m_style(style) {}
/// If \a Path matches the symlink given in the ctor, put the realpath given
/// in the ctor into \a Output.
std::error_code getRealPath(const llvm::Twine &Path,
llvm::SmallVectorImpl<char> &Output) override {
if (FileSpec(Path.str(), m_style) == m_symlink) {
std::string path = m_realpath.GetPath();
Output.assign(path.begin(), path.end());
} else {
Path.toVector(Output);
}
return {};
}
// Implement the rest of the interface
llvm::ErrorOr<llvm::vfs::Status> status(const llvm::Twine &Path) override {
return llvm::errc::operation_not_permitted;
}
llvm::ErrorOr<std::unique_ptr<llvm::vfs::File>>
openFileForRead(const llvm::Twine &Path) override {
return llvm::errc::operation_not_permitted;
}
llvm::vfs::directory_iterator dir_begin(const llvm::Twine &Dir,
std::error_code &EC) override {
return llvm::vfs::directory_iterator();
}
std::error_code setCurrentWorkingDirectory(const llvm::Twine &Path) override {
return llvm::errc::operation_not_permitted;
}
llvm::ErrorOr<std::string> getCurrentWorkingDirectory() const override {
return llvm::errc::operation_not_permitted;
}
private:
FileSpec m_symlink;
FileSpec m_realpath;
FileSpec::Style m_style;
};
} // namespace lldb_private
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