//===-- Path.cpp - Implement OS Path Concept --------------------*- C++ -*-===//
-//
+//
// The LLVM Compiler Infrastructure
//
-// This file was developed by Reid Spencer and is distributed under the
-// University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
//===----------------------------------------------------------------------===//
//
// This header file implements the operating system Path concept.
//===----------------------------------------------------------------------===//
#include "llvm/System/Path.h"
+#include "llvm/Config/config.h"
#include <cassert>
-
-namespace llvm {
+#include <cstring>
+#include <ostream>
+using namespace llvm;
using namespace sys;
//===----------------------------------------------------------------------===//
//=== WARNING: Implementation here must contain only TRULY operating system
-//=== independent code.
+//=== independent code.
//===----------------------------------------------------------------------===//
-LLVMFileType
+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();
+}
+
+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 'l':
- if (magic[1] == 'l' && magic[2] == 'v') {
- if (magic[3] == 'c')
- return CompressedBytecodeFileType;
- else if (magic[3] == 'm')
- return BytecodeFileType;
- }
+ case 'B':
+ if (magic[1] == 'C' && magic[2] == (char)0xC0 && magic[3] == (char)0xDE)
+ return Bitcode_FileType;
break;
-
case '!':
- if (length >= 8) {
+ if (length >= 8)
if (memcmp(magic,"!<arch>\n",8) == 0)
- return ArchiveFileType;
+ 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;
+
+ 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 UnknownFileType;
+ return Unknown_FileType;
}
bool
Path::isArchive() const {
- if (readable())
+ if (canRead())
return hasMagicNumber("!<arch>\012");
return false;
}
bool
Path::isDynamicLibrary() const {
- if (readable())
- return hasMagicNumber("\177ELF");
+ 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 false;
}
GetSystemLibraryPaths(LibPaths);
for (unsigned i = 0; i < LibPaths.size(); ++i) {
sys::Path FullPath(LibPaths[i]);
- FullPath.appendFile("lib" + name + LTDL_SHLIB_EXT);
+ FullPath.appendComponent("lib" + name + LTDL_SHLIB_EXT);
if (FullPath.isDynamicLibrary())
return FullPath;
- FullPath.elideSuffix();
+ FullPath.eraseSuffix();
FullPath.appendSuffix("a");
if (FullPath.isArchive())
return FullPath;
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";
+}
+
+bool Path::hasMagicNumber(const std::string &Magic) const {
+ std::string actualMagic;
+ if (getMagicNumber(actualMagic, Magic.size()))
+ return Magic == actualMagic;
+ return false;
+}
+
+std::string
+Path::getSuffix() const {
+ return path.substr(path.rfind('.') + 1);
}
// Include the truly platform-specific parts of this class.
-#include "platform/Path.cpp"
+#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