Initial implementation of the Path operating system concept.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16048 91177308-0d34-0410-b5e6-96231b3b80d8

lib/System/Path.cpp

@@ -0,0 +1,60 @@
+//===-- 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 header file implements the operating system Path concept.
+//
+//===----------------------------------------------------------------------===//
+#include "llvm/System/Path.h"
+
+namespace llvm {
+namespace sys {
+
+//===----------------------------------------------------------------------===//
+//=== WARNING: Implementation here must contain only TRULY operating system
+//===          independent code. 
+//===----------------------------------------------------------------------===//
+
+bool
+Path::is_valid() const {
+  if ( empty() ) return false;
+  return true;
+}
+
+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;
+}
+
+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 );
+}
+
+void
+Path::make_file() {
+  if ( (*this)[length()-1] == '/')
+    this->erase( this->length()-1, 1 );
+}
+
+// Include the truly platform-specific parts of this class.
+#include "platform/Path.cpp"
+}
+}
+
+// vim: sw=2