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util.cpp 1.7KB

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  1. /* The MIT License
  2. *
  3. * Copyright (c) 2010 OTClient, https://github.com/edubart/otclient
  4. *
  5. * Permission is hereby granted, free of charge, to any person obtaining a copy
  6. * of this software and associated documentation files (the "Software"), to deal
  7. * in the Software without restriction, including without limitation the rights
  8. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  9. * copies of the Software, and to permit persons to whom the Software is
  10. * furnished to do so, subject to the following conditions:
  11. *
  12. * The above copyright notice and this permission notice shall be included in
  13. * all copies or substantial portions of the Software.
  14. *
  15. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21. * THE SOFTWARE.
  22. */
  23. #include "util.h"
  24. std::string vformat(const char *format, va_list args)
  25. {
  26. if(!format)
  27. return "";
  28. int result = -1, length = 256;
  29. char *buffer = 0;
  30. while(result == -1) {
  31. if(buffer)
  32. delete [] buffer;
  33. buffer = new char [length + 1];
  34. result = vsnprintf(buffer, length, format, args);
  35. length *= 2;
  36. }
  37. std::string s(buffer);
  38. delete [] buffer;
  39. return s;
  40. }
  41. std::string format(const char *format, ...)
  42. {
  43. va_list args;
  44. va_start(args, format);
  45. std::string s = vformat(format, args);
  46. va_end(args);
  47. return s;
  48. }