Windows build fixes

hecl/lib/hecl.cpp

@@ -147,6 +147,40 @@ void SanitizePath(std::wstring& path)
         path.pop_back();
 }
 
+SystemString GetcwdStr()
+{
+    /* http://stackoverflow.com/a/2869667 */
+    //const size_t ChunkSize=255;
+    //const int MaxChunks=10240; // 2550 KiBs of current path are more than enough
+
+    SystemChar stackBuffer[255]; // Stack buffer for the "normal" case
+    if (Getcwd(stackBuffer, 255) != nullptr)
+        return SystemString(stackBuffer);
+    if (errno != ERANGE)
+    {
+        // It's not ERANGE, so we don't know how to handle it
+        LogModule.report(logvisor::Fatal, "Cannot determine the current path.");
+        // Of course you may choose a different error reporting method
+    }
+    // Ok, the stack buffer isn't long enough; fallback to heap allocation
+    for (int chunks=2 ; chunks<10240 ; chunks++)
+    {
+        // With boost use scoped_ptr; in C++0x, use unique_ptr
+        // If you want to be less C++ but more efficient you may want to use realloc
+        std::unique_ptr<SystemChar[]> cwd(new SystemChar[255*chunks]);
+        if (Getcwd(cwd.get(), 255*chunks) != nullptr)
+            return SystemString(cwd.get());
+        if (errno != ERANGE)
+        {
+            // It's not ERANGE, so we don't know how to handle it
+            LogModule.report(logvisor::Fatal, "Cannot determine the current path.");
+            // Of course you may choose a different error reporting method
+        }
+    }
+    LogModule.report(logvisor::Fatal, "Cannot determine the current path; the path is apparently unreasonably long");
+    return SystemString();
+}
+
 static std::mutex PathsMutex;
 static std::unordered_map<std::thread::id, ProjectPath> PathsInProgress;
 
@@ -270,7 +304,7 @@ hecl::DirectoryEnumerator::DirectoryEnumerator(SystemStringView path, Mode mode,
             else
                 continue;
 
-            m_entries.push_back(std::move(Entry(std::move(fp), d.cFileName, sz, isDir)));
+            m_entries.emplace_back(fp, d.cFileName, sz, isDir);
         } while (FindNextFileW(dir, &d));
         break;
     case Mode::DirsThenFilesSorted: