Fixed: failed open default config file if path contains non English characters.

src/Platform.cpp

@@ -22,7 +22,40 @@
  */
 
 
+#include <uv.h>
+
+
 #include "Platform.h"
 
 
-char *Platform::m_userAgent = nullptr;
+char *Platform::m_defaultConfigName = nullptr;
+char *Platform::m_userAgent         = nullptr;
+
+
+const char *Platform::defaultConfigName()
+{
+    size_t size = 520;
+
+    if (m_defaultConfigName == nullptr) {
+        m_defaultConfigName = new char[size];
+    }
+
+    if (uv_exepath(m_defaultConfigName, &size) < 0) {
+        return nullptr;
+    }
+
+    if (size < 500) {
+#       ifdef WIN32
+        char *p = strrchr(m_defaultConfigName, '\\');
+#       else
+        char *p = strrchr(m_defaultConfigName, '/');
+#       endif
+
+        if (p) {
+            strcpy(p + 1, "config.json");
+            return m_defaultConfigName;
+        }
+    }
+
+    return nullptr;
+}