changed the way how prefixes are added to urls

instead at the end we adding a prefix before an extension, e.g: filename_(2).jpg

winixd/core/misc.h

@@ -77,6 +77,7 @@ double Tod(const wchar_t * str);
 
 // if the buffer is too small it will be terminated at the beginning (empty string)
 // and the function returns false
+// IMPROVEME now we can use Toa from Pikotools
 template<class CharType>
 bool Toa(unsigned long value, CharType * buffer, size_t buf_len, int base = 10)
 {
@@ -663,6 +664,11 @@ bool GetUTF8File(const std::wstring & file_path, std::wstring & content, bool cl
 
 
 const wchar_t * GetFileExt(const wchar_t * name);
+
+void PrepareNewFileName(const wchar_t * src, const wchar_t * postfix, std::wstring & res, bool clear_res = true);
+void PrepareNewFileName(const std::wstring & src, const std::wstring & postfix, std::wstring & res, bool clear_res = true);
+
+
 int SelectFileType(const wchar_t * file_name);
 int SelectFileType(const std::wstring & file_name);