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//===- llvm/BinaryFormat/Magic.h - File magic identification ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_BINARYFORMAT_MAGIC_H
#define LLVM_BINARYFORMAT_MAGIC_H
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/Twine.h"
#include <system_error>
namespace llvm {
/// file_magic - An "enum class" enumeration of file types based on magic (the
/// first N bytes of the file).
struct file_magic {
enum Impl {
unknown = 0, ///< Unrecognized file
bitcode, ///< Bitcode file
archive, ///< ar style archive file
elf, ///< ELF Unknown type
elf_relocatable, ///< ELF Relocatable object file
elf_executable, ///< ELF Executable image
elf_shared_object, ///< ELF dynamically linked shared lib
elf_core, ///< ELF core image
macho_object, ///< Mach-O Object file
macho_executable, ///< Mach-O Executable
macho_fixed_virtual_memory_shared_lib, ///< Mach-O Shared Lib, FVM
macho_core, ///< Mach-O Core File
macho_preload_executable, ///< Mach-O Preloaded Executable
macho_dynamically_linked_shared_lib, ///< Mach-O dynlinked shared lib
macho_dynamic_linker, ///< The Mach-O dynamic linker
macho_bundle, ///< Mach-O Bundle file
macho_dynamically_linked_shared_lib_stub, ///< Mach-O Shared lib stub
macho_dsym_companion, ///< Mach-O dSYM companion file
macho_kext_bundle, ///< Mach-O kext bundle file
macho_universal_binary, ///< Mach-O universal binary
coff_cl_gl_object, ///< Microsoft cl.exe's intermediate code file
coff_object, ///< COFF object file
coff_import_library, ///< COFF import library
pecoff_executable, ///< PECOFF executable file
windows_resource, ///< Windows compiled resource file (.res)
wasm_object, ///< WebAssembly Object file
pdb, ///< Windows PDB debug info file
};
bool is_object() const { return V != unknown; }
file_magic() = default;
file_magic(Impl V) : V(V) {}
operator Impl() const { return V; }
private:
Impl V = unknown;
};
/// Identify the type of a binary file based on how magical it is.
file_magic identify_magic(StringRef magic);
/// Get and identify \a path's type based on its content.
///
/// @param path Input path.
/// @param result Set to the type of file, or file_magic::unknown.
/// @returns errc::success if result has been successfully set, otherwise a
/// platform-specific error_code.
std::error_code identify_magic(const Twine &path, file_magic &result);
} // namespace llvm
#endif
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