vseprint.c 1.1 KB

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  1. /*
  2. * The authors of this software are Rob Pike and Ken Thompson.
  3. * Copyright (c) 2002 by Lucent Technologies.
  4. * Permission to use, copy, modify, and distribute this software for any
  5. * purpose without fee is hereby granted, provided that this entire notice
  6. * is included in all copies of any software which is or includes a copy
  7. * or modification of this software and in all copies of the supporting
  8. * documentation for such software.
  9. * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED
  10. * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES MAKE ANY
  11. * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY
  12. * OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.
  13. */
  14. #include "lib9.h"
  15. #include "fmtdef.h"
  16. char*
  17. vseprint(char *buf, char *e, char *fmt, va_list args)
  18. {
  19. Fmt f;
  20. if(e <= buf)
  21. return nil;
  22. f.runes = 0;
  23. f.start = buf;
  24. f.to = buf;
  25. f.stop = e - 1;
  26. f.flush = nil;
  27. f.farg = nil;
  28. f.nfmt = 0;
  29. va_copy(f.args, args);
  30. dofmt(&f, fmt);
  31. va_end(f.args);
  32. *(char*)f.to = '\0';
  33. return f.to;
  34. }