Fixes to allow building with msvc.

Author: sipsorcery

db/c.cc

@@ -5,7 +5,9 @@
 #include "leveldb/c.h"
 
 #include <stdlib.h>
+#ifndef WIN32
 #include <unistd.h>
+#endif
 #include "leveldb/cache.h"
 #include "leveldb/comparator.h"
 #include "leveldb/db.h"

port/port_win.h

@@ -32,9 +32,16 @@
 #define STORAGE_LEVELDB_PORT_PORT_WIN_H_
 
 #ifdef _MSC_VER
+#if !(_MSC_VER >= 1900)
 #define snprintf _snprintf
+#endif
 #define close _close
 #define fread_unlocked _fread_nolock
+#ifdef _WIN64
+#define ssize_t int64_t
+#else
+#define ssize_t int32_t
+#endif
 #endif
 
 #include <string>

util/env_win.cc

@@ -761,14 +761,16 @@ uint64_t Win32Env::NowMicros()
 static Status CreateDirInner( const std::string& dirname )
 {
     Status sRet;
-    DWORD attr = ::GetFileAttributes(dirname.c_str());
+    std::wstring dirnameW;
+    ToWidePath(dirname, dirnameW);
+    DWORD attr = ::GetFileAttributesW(dirnameW.c_str());
     if (attr == INVALID_FILE_ATTRIBUTES) { // doesn't exist:
       std::size_t slash = dirname.find_last_of("\\");
       if (slash != std::string::npos){
 	sRet = CreateDirInner(dirname.substr(0, slash));
 	if (!sRet.ok()) return sRet;
       }
-      BOOL result = ::CreateDirectory(dirname.c_str(), NULL);
+      BOOL result = ::CreateDirectoryW(dirnameW.c_str(), NULL);
       if (result == FALSE) {
 	sRet = Status::IOError(dirname, "Could not create directory.");
 	return sRet;