-//===- Path.cpp - Path Operating System Concept -----------------*- C++ -*-===//
+//===-- Path.cpp - Implement OS Path Concept --------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
-// Copyright (C) 2004 eXtensible Systems, Inc. All Rights Reserved.
+// This file was developed by Reid Spencer and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
//
-// This program is open source software; you can redistribute it and/or modify
-// it under the terms of the University of Illinois Open Source License. See
-// LICENSE.TXT (distributed with this software) for details.
+//===----------------------------------------------------------------------===//
//
-// This program 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.
+// This header file implements the operating system Path concept.
//
//===----------------------------------------------------------------------===//
-//
-// This file implements the common Path concept for a variety of platforms.
-// A path is simply the name of some file system storage place. Paths can be
-// either directories or files.
-//
+
+#include "llvm/System/Path.h"
+#include "llvm/Config/config.h"
+#include <cassert>
+#include <ostream>
+using namespace llvm;
+using namespace sys;
+
//===----------------------------------------------------------------------===//
-/// @file lib/System/Path.cpp
-/// @author Reid Spencer <raspencer@x10sys.com> (original author)
-/// @version \verbatim $Id$ \endverbatim
-/// @date 2004/08/14
-/// @since 1.4
-/// @brief Defines the llvm::sys::Path class.
+//=== WARNING: Implementation here must contain only TRULY operating system
+//=== independent code.
//===----------------------------------------------------------------------===//
-#include "llvm/System/Path.h"
+std::ostream& llvm::operator<<(std::ostream &strm, const sys::Path &aPath) {
+ strm << aPath.toString();
+ return strm;
+}
+
+Path
+Path::GetLLVMConfigDir() {
+ Path result;
+#ifdef LLVM_ETCDIR
+ if (result.set(LLVM_ETCDIR))
+ return result;
+#endif
+ return GetLLVMDefaultConfigDir();
+}
-namespace llvm {
-namespace sys {
+LLVMFileType
+sys::IdentifyFileType(const char*magic, unsigned length) {
+ assert(magic && "Invalid magic number string");
+ assert(length >=4 && "Invalid magic number length");
+ switch (magic[0]) {
+ case 'B':
+ if (magic[1] == 'C' && magic[2] == (char)0xC0 && magic[3] == (char)0xDE)
+ return Bitcode_FileType;
+ break;
+ case '!':
+ if (length >= 8)
+ if (memcmp(magic,"!<arch>\n",8) == 0)
+ return Archive_FileType;
+ break;
+
+ case '\177':
+ if (magic[1] == 'E' && magic[2] == 'L' && magic[3] == 'F') {
+ if (length >= 18 && magic[17] == 0)
+ switch (magic[16]) {
+ default: break;
+ case 1: return ELF_Relocatable_FileType;
+ case 2: return ELF_Executable_FileType;
+ case 3: return ELF_SharedObject_FileType;
+ case 4: return ELF_Core_FileType;
+ }
+ }
+ break;
-ErrorCode
-Path::append_directory( const std::string& dirname ) throw() {
- this->append( dirname );
- make_directory();
- return NOT_AN_ERROR;
+ case 0xCA:
+ // This is complicated by an overlap with Java class files.
+ // See the Mach-O section in /usr/share/file/magic for details.
+ if (magic[1] == char(0xFE) && magic[2] == char(0xBA) &&
+ magic[3] == char(0xBE)) {
+ return Mach_O_DynamicallyLinkedSharedLib_FileType;
+
+ // FIXME: How does this work?
+ if (length >= 14 && magic[13] == 0)
+ switch (magic[12]) {
+ default: break;
+ case 1: return Mach_O_Object_FileType;
+ case 2: return Mach_O_Executable_FileType;
+ case 3: return Mach_O_FixedVirtualMemorySharedLib_FileType;
+ case 4: return Mach_O_Core_FileType;
+ case 5: return Mach_O_PreloadExectuable_FileType;
+ case 6: return Mach_O_DynamicallyLinkedSharedLib_FileType;
+ case 7: return Mach_O_DynamicLinker_FileType;
+ case 8: return Mach_O_Bundle_FileType;
+ case 9: return Mach_O_DynamicallyLinkedSharedLibStub_FileType;
+ }
+ }
+ break;
+
+ case 0xF0: // PowerPC Windows
+ case 0x83: // Alpha 32-bit
+ case 0x84: // Alpha 64-bit
+ case 0x66: // MPS R4000 Windows
+ case 0x50: // mc68K
+ case 0x4c: // 80386 Windows
+ if (magic[1] == 0x01)
+ return COFF_FileType;
+
+ case 0x90: // PA-RISC Windows
+ case 0x68: // mc68K Windows
+ if (magic[1] == 0x02)
+ return COFF_FileType;
+ break;
+
+ default:
+ break;
+ }
+ return Unknown_FileType;
}
-ErrorCode
-Path::append_file( const std::string& filename ) throw() {
- this->append( filename );
- return NOT_AN_ERROR;
+bool
+Path::isArchive() const {
+ if (canRead())
+ return hasMagicNumber("!<arch>\012");
+ return false;
}
-ErrorCode
-Path::create( bool create_parents)throw() {
- ErrorCode result ( NOT_AN_ERROR );
- if ( is_directory() ) {
- if ( create_parents ) {
- result = this->create_directories( );
- } else {
- result = this->create_directory( );
- }
- } else if ( is_file() ) {
- if ( create_parents ) {
- result = this->create_directories( );
- }
- if ( result ) {
- result = this->create_file( );
- }
- } else {
- result = ErrorCode(ERR_SYS_INVALID_ARG);
+bool
+Path::isDynamicLibrary() const {
+ if (canRead()) {
+ std::string Magic;
+ if (getMagicNumber(Magic, 64))
+ switch (IdentifyFileType(Magic.c_str(), Magic.length())) {
+ default: return false;
+ case Mach_O_FixedVirtualMemorySharedLib_FileType:
+ case Mach_O_DynamicallyLinkedSharedLib_FileType:
+ case Mach_O_DynamicallyLinkedSharedLibStub_FileType:
+ case ELF_SharedObject_FileType:
+ case COFF_FileType: return true;
+ }
}
- return result;
+ return false;
}
-ErrorCode
-Path::remove() throw() {
- ErrorCode result( NOT_AN_ERROR );
- if ( is_directory() ) {
- if ( exists() )
- this->remove_directory( );
- } else if ( is_file() ) {
- if ( exists() ) this->remove_file( );
- } else {
- result = ErrorCode(ERR_SYS_INVALID_ARG);
+Path
+Path::FindLibrary(std::string& name) {
+ std::vector<sys::Path> LibPaths;
+ GetSystemLibraryPaths(LibPaths);
+ for (unsigned i = 0; i < LibPaths.size(); ++i) {
+ sys::Path FullPath(LibPaths[i]);
+ FullPath.appendComponent("lib" + name + LTDL_SHLIB_EXT);
+ if (FullPath.isDynamicLibrary())
+ return FullPath;
+ FullPath.eraseSuffix();
+ FullPath.appendSuffix("a");
+ if (FullPath.isArchive())
+ return FullPath;
}
- return result;
+ return sys::Path();
}
+std::string Path::GetDLLSuffix() {
+ return LTDL_SHLIB_EXT;
}
+
+bool
+Path::isBitcodeFile() const {
+ std::string actualMagic;
+ if (!getMagicNumber(actualMagic, 4))
+ return false;
+ return actualMagic == "BC\xC0\xDE";
}
-// Include the platform specific portions of this class
-#include "linux/Path.cpp"
+bool Path::hasMagicNumber(const std::string &Magic) const {
+ std::string actualMagic;
+ if (getMagicNumber(actualMagic, Magic.size()))
+ return Magic == actualMagic;
+ return false;
+}
+
+
+
+// Include the truly platform-specific parts of this class.
+#if defined(LLVM_ON_UNIX)
+#include "Unix/Path.inc"
+#endif
+#if defined(LLVM_ON_WIN32)
+#include "Win32/Path.inc"
+#endif
-// vim: sw=2 smartindent smarttab tw=80 autoindent expandtab
+DEFINING_FILE_FOR(SystemPath)
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