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c2eb650e39
Put the rest of lib/System into LinkAllVMCore.h. This makes all of lib/System available to programs that #include LinkALlVMCore.h so that loadable modules linked into those programs can depend on all of lib/System being available. llvm-svn: 29288
112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
//===-- Path.cpp - Implement OS Path Concept --------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Reid Spencer and is distributed under the
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// University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This header file implements the operating system Path concept.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/System/Path.h"
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#include "llvm/Config/config.h"
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#include <cassert>
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#include <ostream>
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using namespace llvm;
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using namespace sys;
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//===----------------------------------------------------------------------===//
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//=== WARNING: Implementation here must contain only TRULY operating system
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//=== independent code.
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//===----------------------------------------------------------------------===//
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std::ostream& llvm::operator<<(std::ostream &strm, const sys::Path &aPath) {
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strm << aPath.toString();
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return strm;
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}
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Path
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Path::GetLLVMConfigDir() {
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Path result;
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#ifdef LLVM_ETCDIR
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if (result.set(LLVM_ETCDIR))
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return result;
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#endif
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return GetLLVMDefaultConfigDir();
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}
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LLVMFileType
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sys::IdentifyFileType(const char*magic, unsigned length) {
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assert(magic && "Invalid magic number string");
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assert(length >=4 && "Invalid magic number length");
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switch (magic[0]) {
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case 'l':
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if (magic[1] == 'l' && magic[2] == 'v') {
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if (magic[3] == 'c')
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return CompressedBytecodeFileType;
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else if (magic[3] == 'm')
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return BytecodeFileType;
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}
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break;
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case '!':
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if (length >= 8) {
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if (memcmp(magic,"!<arch>\n",8) == 0)
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return ArchiveFileType;
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}
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break;
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default:
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break;
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}
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return UnknownFileType;
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}
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bool
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Path::isArchive() const {
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if (canRead())
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return hasMagicNumber("!<arch>\012");
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return false;
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}
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bool
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Path::isDynamicLibrary() const {
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if (canRead())
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return hasMagicNumber("\177ELF");
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return false;
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}
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Path
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Path::FindLibrary(std::string& name) {
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std::vector<sys::Path> LibPaths;
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GetSystemLibraryPaths(LibPaths);
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for (unsigned i = 0; i < LibPaths.size(); ++i) {
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sys::Path FullPath(LibPaths[i]);
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FullPath.appendComponent("lib" + name + LTDL_SHLIB_EXT);
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if (FullPath.isDynamicLibrary())
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return FullPath;
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FullPath.eraseSuffix();
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FullPath.appendSuffix("a");
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if (FullPath.isArchive())
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return FullPath;
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}
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return sys::Path();
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}
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std::string Path::GetDLLSuffix() {
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return LTDL_SHLIB_EXT;
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}
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// Include the truly platform-specific parts of this class.
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#if defined(LLVM_ON_UNIX)
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#include "Unix/Path.inc"
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#endif
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#if defined(LLVM_ON_WIN32)
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#include "Win32/Path.inc"
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#endif
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DEFINING_FILE_FOR(SystemPath)
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