Provide configuration support and usage for MINGW32 platform

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

diff --git a/lib/System/Path.cpp b/lib/System/Path.cpp
index e32842dd18895012608a31723356349c4fcb235c..9ee0a3e852785261a93bd63b40f86ac2f6e2a90d 100644 (file)
--- a/lib/System/Path.cpp
+++ b/lib/System/Path.cpp
@@ -1,60 +1,109 @@
 //===-- 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.
 //
 //===----------------------------------------------------------------------===//
+
 #include "llvm/System/Path.h"
+#include "llvm/Config/config.h"
+#include <cassert>
 
 namespace llvm {
-namespace sys {
+using namespace sys;
 
 //===----------------------------------------------------------------------===//
 //=== WARNING: Implementation here must contain only TRULY operating system
-//===          independent code. 
+//===          independent code.
 //===----------------------------------------------------------------------===//
 
-bool
-Path::is_valid() const {
-  if ( empty() ) return false;
-  return true;
+Path
+Path::GetLLVMConfigDir() {
+  Path result;
+#ifdef LLVM_ETCDIR
+  if (result.set(LLVM_ETCDIR))
+    return result;
+#endif
+  return GetLLVMDefaultConfigDir();
 }
 
-void 
-Path::fill( char* buffer, unsigned bufflen ) const {
-  unsigned pathlen = length();
-  assert( bufflen > pathlen && "Insufficient buffer size" );
-  unsigned copylen = pathlen <? (bufflen - 1);
-  this->copy(buffer, copylen, 0 );
-  buffer[ copylen ] = 0;
+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;
 }
 
-void
-Path::make_directory() {
-  char end[2];
-  end[0] = '/';
-  end[1] = 0;
-  if ( empty() )
-    this->assign( end );
-  else if ( (*this)[length()-1] != '/')
-    this->append( end );
+bool
+Path::isArchive() const {
+  if (canRead())
+    return hasMagicNumber("!<arch>\012");
+  return false;
 }
 
-void
-Path::make_file() {
-  if ( (*this)[length()-1] == '/')
-    this->erase( this->length()-1, 1 );
+bool
+Path::isDynamicLibrary() const {
+  if (canRead())
+    return hasMagicNumber("\177ELF");
+  return false;
 }
 
-// Include the truly platform-specific parts of this class.
-#include "platform/Path.cpp"
+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;
 }
+
 }
 
-// vim: sw=2
+// 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
+