reportdesign/source/inc/constasciistring.hxx

   1 #ifndef _RPTSHARED_CONSTASCIISTRING_HXX_
   2 #define _RPTSHARED_CONSTASCIISTRING_HXX_
   3
   4 #ifndef CONSTASCII_INCLUDED_INDIRECT
   5 #error "don't include this file directly! use stringconstants.hrc instead!"
   6 #endif
   7
   8 // no namespaces. This file is included from several other files _within_ a namespace.
   9
  10 //============================================================
  11 //= a helper for static ascii pseudo-unicode strings
  12 //============================================================
  13 // string constants
  14 struct ConstAsciiString
  15 {
  16     const sal_Char*     ascii;
  17     sal_Int32           length;
  18
  19     inline      operator const ::rtl::OUString& () const;
  20     inline      operator const sal_Char* () const { return ascii; }
  21
  22     inline ConstAsciiString(const sal_Char* _pAsciiZeroTerminated, const sal_Int32 _nLength);
  23     inline ~ConstAsciiString();
  24
  25 private:
  26     mutable ::rtl::OUString*    ustring;
  27 };
  28
  29 //------------------------------------------------------------
  30 inline ConstAsciiString::ConstAsciiString(const sal_Char* _pAsciiZeroTerminated, const sal_Int32 _nLength)
  31     :ascii(_pAsciiZeroTerminated)
  32     ,length(_nLength)
  33     ,ustring(NULL)
  34 {
  35 }
  36
  37 //------------------------------------------------------------
  38 inline ConstAsciiString::~ConstAsciiString()
  39 {
  40     delete ustring;
  41     ustring = NULL;
  42 }
  43
  44 //------------------------------------------------------------
  45 inline ConstAsciiString::operator const ::rtl::OUString& () const
  46 {
  47     if (!ustring)
  48         ustring = new ::rtl::OUString(ascii, length, RTL_TEXTENCODING_ASCII_US);
  49     return *ustring;
  50 }
  51
  52 //============================================================
  53
  54 #define DECLARE_CONSTASCII_USTRING( name ) \
  55     extern const ConstAsciiString name
  56
  57 #define IMPLEMENT_CONSTASCII_USTRING( name, string ) \
  58     const ConstAsciiString name(string, sizeof(string)-1)
  59
  60
  61 #endif // _RPTSHARED_CONSTASCIISTRING_HXX_