Function os_config_read_string

legacy/D3Launch/OS_Config.cpp:286–334

static char tmp_string_data[1024];

char *os_config_read_string(char *section, char *name, char *default_value) {
  HKEY hKey = NULL;
  DWORD dwType, dwLen;
  char keyname[1024];
  LONG lResult;

  if (section) {
    sprintf(keyname, "Software\\%s\\%s\\%s", szCompanyName, szAppName, section);
  } else {
    sprintf(keyname, "Software\\%s\\%s", szCompanyName, szAppName);
  }

  lResult = RegOpenKeyEx(HKEY_LOCAL_MACHINE, // Where it is
                         keyname,            // name of key
                         NULL,               // DWORD reserved
                         KEY_QUERY_VALUE,    // Allows all changes
                         &hKey);             // Location to store key

  if (lResult != ERROR_SUCCESS) {
    // mprintf( "Error opening registry key '%s'\n", keyname );
    goto Cleanup;
  }

  if (!name) {
    // mprintf( "No variable name passed\n" );
    goto Cleanup;
  }

  dwLen = 1024;
  lResult = RegQueryValueEx(hKey,                        // Handle to key
                            name,                        // The values name
                            NULL,                        // DWORD reserved
                            &dwType,                     // What kind it is
                            (uint8_t *)&tmp_string_data, // value to set
                            &dwLen);                     // How many bytes to set

  if (lResult != ERROR_SUCCESS) {
    // mprintf( "Error reading registry key '%s'\n", name );
    goto Cleanup;
  }

  default_value = tmp_string_data;

Cleanup:
  if (hKey)
    RegCloseKey(hKey);

  return default_value;
}

static char tmp_string_data_ex[1024];