source/includes/vst3sdk/pluginterfaces/base/conststringtable.cpp

   1 //-----------------------------------------------------------------------------
   2 // Project     : SDK Core
   3 //
   4 // Category    : SDK Core Interfaces
   5 // Filename    : pluginterfaces/base/conststringtable.cpp
   6 // Created by  : Steinberg, 09/2007
   7 // Description : constant unicode string table
   8 //
   9 //-----------------------------------------------------------------------------
  10 // This file is part of a Steinberg SDK. It is subject to the license terms
  11 // in the LICENSE file found in the top-level directory of this distribution
  12 // and at www.steinberg.net/sdklicenses.
  13 // No part of the SDK, including this file, may be copied, modified, propagated,
  14 // or distributed except according to the terms contained in the LICENSE file.
  15 //-----------------------------------------------------------------------------
  16
  17 #include "conststringtable.h"
  18 #include <cstring>
  19 #include <map>
  20
  21 namespace Steinberg {
  22
  23 static std::map<const char8*, char16*>* stringMap;
  24 static std::map<const char8, char16>* charMap;
  25
  26 static char16* generateUTF16 (const char8* str);
  27
  28 //----------------------------------------------------------------------------
  29 ConstStringTable* ConstStringTable::instance ()
  30 {
  31         static ConstStringTable stringTable;
  32         return &stringTable;
  33 }
  34
  35 //----------------------------------------------------------------------------
  36 const char16* ConstStringTable::getString (const char8* str) const
  37 {
  38         std::map<const char8*, char16*>::iterator iter = stringMap->find (str);
  39         if (iter != stringMap->end ())
  40                 return iter->second;
  41         char16* uStr = generateUTF16 (str);
  42         stringMap->insert (std::make_pair (str, uStr));
  43         return uStr;
  44 }
  45
  46 //----------------------------------------------------------------------------
  47 const char16 ConstStringTable::getString (const char8 str) const
  48 {
  49         std::map<const char8, char16>::iterator iter = charMap->find (str);
  50         if (iter != charMap->end ())
  51                 return iter->second;
  52         char16 uStr = 0;
  53 #if BYTEORDER == kBigEndian
  54         char8* puStr = (char8*)&uStr;
  55         puStr[1] = str;
  56 #else
  57         uStr = str;
  58 #endif
  59         charMap->insert (std::make_pair (str, uStr));
  60         return uStr;
  61 }
  62
  63 //----------------------------------------------------------------------------
  64 ConstStringTable::ConstStringTable ()
  65 {
  66         stringMap = new std::map<const char8*, char16*>;
  67         charMap = new std::map<const char8, char16>;
  68 }
  69
  70 //----------------------------------------------------------------------------
  71 ConstStringTable::~ConstStringTable ()
  72 {
  73         // free out allocated strings
  74         {
  75                 std::map<const char8*, char16*>::iterator iter = stringMap->begin ();
  76                 while (iter != stringMap->end ())
  77                 {
  78                         delete[] iter->second;
  79                         iter++;
  80                 }
  81         } // delete iterator on map before deleting the map
  82
  83         delete stringMap;
  84         delete charMap;
  85 }
  86
  87 //----------------------------------------------------------------------------
  88 char16* generateUTF16 (const char8* str)
  89 {
  90         int32 len = (int32)strlen (str);
  91         char16* result = new char16[len + 1];
  92         for (int32 i = 0; i < len; i++)
  93         {
  94 #if BYTEORDER == kBigEndian
  95                 char8* pChr = (char8*)&result[i];
  96                 pChr[0] = 0;
  97                 pChr[1] = str[i];
  98 #else
  99                 result[i] = str[i];
 100 #endif
 101         }
 102         result[len] = 0;
 103         return result;
 104 }
 105 //------------------------------------------------------------------------
 106 } // namespace Steinberg