44         printer << L"#" << reinterpret_cast<size_t>(name);
  45         nameStr = printer.str();
  46         namePtr = name;
  47     } else {
  48         nameStr = name;
  49         namePtr = nameStr.c_str();
  50     }
  51     if (IS_INTRESOURCE(type)) {
  52         std::wostringstream printer;
  53         printer << L"#" << reinterpret_cast<size_t>(name);
  54         typeStr = printer.str();
  55         typePtr = type;
  56     } else {
  57         typeStr = type;
  58         typePtr = typeStr.c_str();
  59     }
  60     instance = module;
  61 }
  62 
  63 std::string Resource::getErrMsg(const std::string &descr) const {
  64     return (tstrings::any() << descr << " (name='" << nameStr << "', type='" << typeStr << "')").str();


  65 }
  66 
  67 HRSRC Resource::findResource() const {
  68     LPCTSTR id = namePtr;
  69     // string resources are stored in blocks (stringtables)
  70     // id of the resource is (stringId / 16 + 1)
  71     if (typePtr == RT_STRING) {
  72         id = MAKEINTRESOURCE(UINT(size_t(id) / 16 + 1));
  73     }
  74     return FindResource(instance, id, typePtr);
  75 }
  76 
  77 LPVOID Resource::getPtr(DWORD &size) const
  78 {
  79     // LoadString returns the same result if value is zero-length or if if the value does not exists,


  80     // so wee need to ensure the stringtable exists
  81     HRSRC resInfo = findResource();
  82     if (resInfo == NULL) {
  83         JP_THROW(SysError(getErrMsg("cannot find resource"), FindResource));
  84     }
  85 
  86     HGLOBAL res = LoadResource(instance, resInfo);
  87     if (res == NULL) {
  88         JP_THROW(SysError(getErrMsg("cannot load resource"), LoadResource));
  89     }
  90 
  91     LPVOID ptr = LockResource(res);
  92     if (res == NULL) {
  93         JP_THROW(SysError(getErrMsg("cannot lock resource"), LockResource));
  94     }
  95 
  96     if (typePtr == RT_STRING) {
  97         // string resources are stored in stringtables and need special handling

  98         // The simplest way (while we don't need handle resource locale) is LoadString

  99         // But this adds dependency on user32.dll, so implement custom string extraction




 100 
 101         // number in the block (namePtr is an integer)
 102         size_t num = size_t(namePtr) & 0xf;
 103         LPWSTR strPtr = (LPWSTR)ptr;
 104         for (size_t i = 0; i < num; i++) {
 105             // 1st symbol contains string length
 106             strPtr += DWORD(*strPtr) + 1;
 107         }
 108         // *strPtr contains string length, string value starts at strPtr+1
 109         size = DWORD(*strPtr) * sizeof(wchar_t);
 110         ptr = strPtr+1;
 111     } else {
 112         size = SizeofResource(instance, resInfo);
 113     }
 114 
 115     return ptr;
 116 }
 117 
 118 bool Resource::available() const {
 119     return NULL != findResource();

  44         printer << L"#" << reinterpret_cast<size_t>(name);
  45         nameStr = printer.str();
  46         namePtr = name;
  47     } else {
  48         nameStr = name;
  49         namePtr = nameStr.c_str();
  50     }
  51     if (IS_INTRESOURCE(type)) {
  52         std::wostringstream printer;
  53         printer << L"#" << reinterpret_cast<size_t>(name);
  54         typeStr = printer.str();
  55         typePtr = type;
  56     } else {
  57         typeStr = type;
  58         typePtr = typeStr.c_str();
  59     }
  60     instance = module;
  61 }
  62 
  63 std::string Resource::getErrMsg(const std::string &descr) const {
  64     return (tstrings::any() << descr << " (name='" << nameStr <<
  65             "', type='" << typeStr << "')").str();
  66 }
  67 
  68 HRSRC Resource::findResource() const {
  69     LPCTSTR id = namePtr;
  70     // string resources are stored in blocks (stringtables)
  71     // id of the resource is (stringId / 16 + 1)
  72     if (typePtr == RT_STRING) {
  73         id = MAKEINTRESOURCE(UINT(size_t(id) / 16 + 1));
  74     }
  75     return FindResource(instance, id, typePtr);
  76 }
  77 
  78 LPVOID Resource::getPtr(DWORD &size) const
  79 {
  80     // LoadString returns the same result if value is zero-length or
  81     // if if the value does not exists,
  82     // so wee need to ensure the stringtable exists
  83     HRSRC resInfo = findResource();
  84     if (resInfo == NULL) {
  85         JP_THROW(SysError(getErrMsg("cannot find resource"), FindResource));
  86     }
  87 
  88     HGLOBAL res = LoadResource(instance, resInfo);
  89     if (res == NULL) {
  90         JP_THROW(SysError(getErrMsg("cannot load resource"), LoadResource));
  91     }
  92 
  93     LPVOID ptr = LockResource(res);
  94     if (res == NULL) {
  95         JP_THROW(SysError(getErrMsg("cannot lock resource"), LockResource));
  96     }
  97 
  98     if (typePtr == RT_STRING) {
  99         // string resources are stored in stringtables and
 100         // need special handling
 101         // The simplest way (while we don't need handle resource locale)
 102         // is LoadString
 103         // But this adds dependency on user32.dll,
 104         // so implement custom string extraction
 105 
 106         // number in the block (namePtr is an integer)
 107         size_t num = size_t(namePtr) & 0xf;
 108         LPWSTR strPtr = (LPWSTR)ptr;
 109         for (size_t i = 0; i < num; i++) {
 110             // 1st symbol contains string length
 111             strPtr += DWORD(*strPtr) + 1;
 112         }
 113         // *strPtr contains string length, string value starts at strPtr+1
 114         size = DWORD(*strPtr) * sizeof(wchar_t);
 115         ptr = strPtr+1;
 116     } else {
 117         size = SizeofResource(instance, resInfo);
 118     }
 119 
 120     return ptr;
 121 }
 122 
 123 bool Resource::available() const {
 124     return NULL != findResource();