LLVM API Documentation
00001 //===-- Path.cpp - Implement OS Path Concept --------------------*- C++ -*-===// 00002 // 00003 // The LLVM Compiler Infrastructure 00004 // 00005 // This file was developed by Reid Spencer and is distributed under the 00006 // University of Illinois Open Source License. See LICENSE.TXT for details. 00007 // 00008 //===----------------------------------------------------------------------===// 00009 // 00010 // This header file implements the operating system Path concept. 00011 // 00012 //===----------------------------------------------------------------------===// 00013 00014 #include "llvm/System/Path.h" 00015 #include <cassert> 00016 00017 namespace llvm { 00018 using namespace sys; 00019 00020 //===----------------------------------------------------------------------===// 00021 //=== WARNING: Implementation here must contain only TRULY operating system 00022 //=== independent code. 00023 //===----------------------------------------------------------------------===// 00024 00025 LLVMFileType 00026 sys::IdentifyFileType(const char*magic, unsigned length) { 00027 assert(magic && "Invalid magic number string"); 00028 assert(length >=4 && "Invalid magic number length"); 00029 switch (magic[0]) { 00030 case 'l': 00031 if (magic[1] == 'l' && magic[2] == 'v') { 00032 if (magic[3] == 'c') 00033 return CompressedBytecodeFileType; 00034 else if (magic[3] == 'm') 00035 return BytecodeFileType; 00036 } 00037 break; 00038 00039 case '!': 00040 if (length >= 8) { 00041 if (memcmp(magic,"!<arch>\n",8) == 0) 00042 return ArchiveFileType; 00043 } 00044 break; 00045 00046 default: 00047 break; 00048 } 00049 return UnknownFileType; 00050 } 00051 00052 } 00053 00054 // Include the truly platform-specific parts of this class. 00055 #include "platform/Path.cpp" 00056 00057 // vim: sw=2 smartindent smarttab tw=80 autoindent expandtab