Make an error message a little more intelligible.

[oota-llvm.git] / lib / System / Path.cpp

diff --git a/lib/System/Path.cpp b/lib/System/Path.cpp
index fd7fd4f665b7fd27b3f1e93b0653fac318f20289..1246038f84fe6fa9a0ccfe87cdb1305b884ae66a 100644 (file)
--- a/lib/System/Path.cpp
+++ b/lib/System/Path.cpp
@@ -1,10 +1,10 @@
 //===-- Path.cpp - Implement OS Path Concept --------------------*- C++ -*-===//
-// 
+//
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Reid Spencer and is distributed under the 
+// This file was developed by Reid Spencer and is distributed under the
 // University of Illinois Open Source License. See LICENSE.TXT for details.
-// 
+//
 //===----------------------------------------------------------------------===//
 //
 //  This header file implements the operating system Path concept.
@@ -12,28 +12,100 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/System/Path.h"
-
-namespace llvm {
+#include "llvm/Config/config.h"
+#include <cassert>
+#include <ostream>
+using namespace llvm;
 using namespace sys;
 
 //===----------------------------------------------------------------------===//
 //=== WARNING: Implementation here must contain only TRULY operating system
-//===          independent code. 
+//===          independent code.
 //===----------------------------------------------------------------------===//
 
+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;
+      }
+      break;
+
+    case '!':
+      if (length >= 8) {
+        if (memcmp(magic,"!<arch>\n",8) == 0)
+          return ArchiveFileType;
+      }
+      break;
+
+    default:
+      break;
+  }
+  return UnknownFileType;
+}
+
 bool
-Path::is_file() const {
-  return (is_valid() && path[path.length()-1] != '/');
+Path::isArchive() const {
+  if (canRead())
+    return hasMagicNumber("!<arch>\012");
+  return false;
 }
 
 bool
-Path::is_directory() const {
-  return (is_valid() && path[path.length()-1] == '/');
+Path::isDynamicLibrary() const {
+  if (canRead())
+    return hasMagicNumber("\177ELF");
+  return false;
+}
+
+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 sys::Path();
 }
 
+std::string Path::GetDLLSuffix() {
+  return LTDL_SHLIB_EXT;
 }
 
 // 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
+DEFINING_FILE_FOR(SystemPath)