Windows DefParser: Remove dependency on //src/main/cpp/util:file Change-Id: Ifc4a00d5bfef974f82c06eebc9553edad7b8145e

diff --git a/third_party/def_parser/BUILD b/third_party/def_parser/BUILD
index 47ac3e3..2d28bbb 100644
--- a/third_party/def_parser/BUILD
+++ b/third_party/def_parser/BUILD

@@ -4,9 +4,6 @@
     name = "def_parser_lib",
     srcs = ["def_parser.cc"],
     hdrs = ["def_parser.h"],
-    deps = [
-        "//src/main/cpp/util:file",
-    ],
 )
 
 cc_binary(

diff --git a/third_party/def_parser/def_parser.cc b/third_party/def_parser/def_parser.cc
index 07cb727..2ed2db6 100644
--- a/third_party/def_parser/def_parser.cc
+++ b/third_party/def_parser/def_parser.cc

@@ -61,12 +61,12 @@
 * Author:   Valery Fine 16/09/96  (E-mail: fine@vxcern.cern.ch)
 *----------------------------------------------------------------------
 */
-#include "src/main/cpp/util/file_platform.h"
 #include "third_party/def_parser/def_parser.h"
 
 #include <algorithm>
 #include <iostream>
 #include <fstream>
+#include <memory>    // unique_ptr
 #include <sstream>
 #include <windows.h>
 
@@ -77,6 +77,7 @@
 using std::string;
 using std::wstring;
 using std::stringstream;
+using std::unique_ptr;
 
 typedef struct cmANON_OBJECT_HEADER_BIGOBJ {
   /* same as ANON_OBJECT_HEADER_V2 */
@@ -303,6 +304,37 @@
   LocalFree(message_buffer);
 }
 
+wstring StringToWString(const string& s) {
+  SetLastError(ERROR_SUCCESS);
+  DWORD len = MultiByteToWideChar(CP_ACP, 0, s.c_str(), -1, NULL, 0);
+  if (len == 0 && GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+    PrintLastError();
+    return L"";
+  }
+  unique_ptr<WCHAR[]> wstr(new WCHAR[len]);
+  MultiByteToWideChar(CP_ACP, 0, s.c_str(), -1, wstr.get(), len);
+  return wstring(wstr.get());
+}
+
+wstring AsAbsoluteWindowsPath(const string& path) {
+  wstring wpath = StringToWString(path);
+  // Get the buffer length we need for the full path.
+  SetLastError(ERROR_SUCCESS);
+  DWORD len = GetFullPathNameW(wpath.c_str(), 0, NULL, NULL);
+  if (len == 0 && GetLastError() != ERROR_INSUFFICIENT_BUFFER) {
+    PrintLastError();
+    return L"";
+  }
+  SetLastError(ERROR_SUCCESS);
+  unique_ptr<WCHAR[]> buffer(new WCHAR[len]);
+  GetFullPathNameW(wpath.c_str(), len, buffer.get(), NULL);
+  if (GetLastError() != ERROR_SUCCESS) {
+    PrintLastError();
+    return L"";
+  }
+  return wstring(L"\\\\?\\") + wstring(buffer.get());
+}
+
 bool DumpFile(const char* filename, std::set<string>& symbols,
               std::set<string>& dataSymbols) {
   HANDLE hFile;
@@ -310,8 +342,7 @@
   LPVOID lpFileBase;
   PIMAGE_DOS_HEADER dosHeader;
 
-  wstring filenameW;
-  blaze_util::AsAbsoluteWindowsPath(filename, &filenameW);
+  wstring filenameW = AsAbsoluteWindowsPath(filename);
   hFile = CreateFileW(filenameW.c_str(), GENERIC_READ,
                       FILE_SHARE_READ, NULL, OPEN_EXISTING,
                       FILE_ATTRIBUTE_NORMAL, 0);

diff --git a/third_party/def_parser/def_parser.h b/third_party/def_parser/def_parser.h
index 2c200b3..3785914 100644
--- a/third_party/def_parser/def_parser.h
+++ b/third_party/def_parser/def_parser.h

@@ -8,6 +8,8 @@
 #include <stdio.h>
 #include <string>
 
+std::wstring AsAbsoluteWindowsPath(const std::string& path);
+
 class DefParser{
  public:
   DefParser() {}

diff --git a/third_party/def_parser/def_parser_main.cc b/third_party/def_parser/def_parser_main.cc
index 5268b0c..35762d7 100644
--- a/third_party/def_parser/def_parser_main.cc
+++ b/third_party/def_parser/def_parser_main.cc

@@ -5,7 +5,6 @@
 #include <iostream>
 #include <string>
 
-#include "src/main/cpp/util/file_platform.h"
 #include "third_party/def_parser/def_parser.h"
 
 static const char* ws = " \t\n\r\f\v";
@@ -38,8 +37,7 @@
     return 1;
   }
 
-  std::wstring filenameW;
-  blaze_util::AsAbsoluteWindowsPath(argv[1], &filenameW);
+  std::wstring filenameW = AsAbsoluteWindowsPath(argv[1]);
   FILE* fout = _wfopen(filenameW.c_str(), L"w+");
   if (!fout) {
     std::cerr << "Could not open output .def file: " << argv[1] << "\n";
@@ -53,7 +51,7 @@
   for (int i = 3; i < argc; i++) {
     // If the argument starts with @, then treat it as a parameter file.
     if (argv[i][0] == '@') {
-      blaze_util::AsAbsoluteWindowsPath(argv[i] + 1, &filenameW);
+      filenameW = AsAbsoluteWindowsPath(argv[i] + 1);
       std::ifstream paramfile(filenameW.c_str(), std::ios::in | std::ios::binary);
       if (!paramfile) {
         std::cerr << "Could not open parameter file: " << argv[i] << "\n";