fd9461f5e4
The new implementation of EnumerateDirectory relies on `::no_push()` being implemented for the VFS recursive directory iterators. However this patch (D53465) hasn't been landed yet. llvm-svn: 345787
108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
//===-- FileSystem.h --------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef liblldb_Host_FileSystem_h
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#define liblldb_Host_FileSystem_h
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#include "lldb/Utility/FileSpec.h"
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#include "lldb/Utility/Status.h"
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#include "llvm/ADT/Optional.h"
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#include "llvm/Support/Chrono.h"
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#include "llvm/Support/VirtualFileSystem.h"
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#include "lldb/lldb-types.h"
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#include <stdint.h>
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#include <stdio.h>
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#include <sys/stat.h>
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namespace lldb_private {
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class FileSystem {
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public:
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static const char *DEV_NULL;
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static const char *PATH_CONVERSION_ERROR;
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FileSystem() : m_fs(llvm::vfs::getRealFileSystem()) {}
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FileSystem(llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> fs) : m_fs(fs) {}
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static FileSystem &Instance();
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static void Initialize();
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static void Initialize(llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> fs);
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static void Terminate();
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Status Symlink(const FileSpec &src, const FileSpec &dst);
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Status Readlink(const FileSpec &src, FileSpec &dst);
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Status ResolveSymbolicLink(const FileSpec &src, FileSpec &dst);
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/// Wraps ::fopen in a platform-independent way. Once opened, FILEs can be
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/// manipulated and closed with the normal ::fread, ::fclose, etc. functions.
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FILE *Fopen(const char *path, const char *mode);
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/// Returns the modification time of the given file.
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/// @{
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llvm::sys::TimePoint<> GetModificationTime(const FileSpec &file_spec) const;
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llvm::sys::TimePoint<> GetModificationTime(const llvm::Twine &path) const;
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/// @}
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/// Returns the on-disk size of the given file in bytes.
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/// @{
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uint64_t GetByteSize(const FileSpec &file_spec) const;
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uint64_t GetByteSize(const llvm::Twine &path) const;
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/// @}
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/// Return the current permissions of the given file.
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///
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/// Returns a bitmask for the current permissions of the file (zero or more
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/// of the permission bits defined in File::Permissions).
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/// @{
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uint32_t GetPermissions(const FileSpec &file_spec) const;
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uint32_t GetPermissions(const llvm::Twine &path) const;
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/// @}
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/// Returns whether the given file exists.
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/// @{
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bool Exists(const FileSpec &file_spec) const;
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bool Exists(const llvm::Twine &path) const;
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/// @}
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/// Returns whether the given file is readable.
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/// @{
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bool Readable(const FileSpec &file_spec) const;
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bool Readable(const llvm::Twine &path) const;
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/// @}
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/// Make the given file path absolute.
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/// @{
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std::error_code MakeAbsolute(llvm::SmallVectorImpl<char> &path) const;
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std::error_code MakeAbsolute(FileSpec &file_spec) const;
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/// @}
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/// Resolve path to make it canonical.
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/// @{
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void Resolve(llvm::SmallVectorImpl<char> &path);
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void Resolve(FileSpec &file_spec);
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/// @}
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std::error_code GetRealPath(const llvm::Twine &path,
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llvm::SmallVectorImpl<char> &output) const;
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protected:
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void SetFileSystem(llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> fs);
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private:
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static llvm::Optional<FileSystem> &InstanceImpl();
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llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> m_fs;
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};
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} // namespace lldb_private
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#endif
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