compat_strl.c 2.1 KB

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  1. /* Copyright (C) 2010-2018 The RetroArch team
  2. *
  3. * ---------------------------------------------------------------------------------------
  4. * The following license statement only applies to this file (compat_strl.c).
  5. * ---------------------------------------------------------------------------------------
  6. *
  7. * Permission is hereby granted, free of charge,
  8. * to any person obtaining a copy of this software and associated documentation files (the "Software"),
  9. * to deal in the Software without restriction, including without limitation the rights to
  10. * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
  11. * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
  12. *
  13. * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
  14. *
  15. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
  16. * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  18. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  19. * 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 THE SOFTWARE.
  21. */
  22. #include <stdlib.h>
  23. #include <ctype.h>
  24. #include <compat/strl.h>
  25. /* Implementation of strlcpy()/strlcat() based on OpenBSD. */
  26. #ifndef __MACH__
  27. size_t strlcpy(char *dest, const char *source, size_t size)
  28. {
  29. size_t src_size = 0;
  30. size_t n = size;
  31. if (n)
  32. while (--n && (*dest++ = *source++)) src_size++;
  33. if (!n)
  34. {
  35. if (size) *dest = '\0';
  36. while (*source++) src_size++;
  37. }
  38. return src_size;
  39. }
  40. size_t strlcat(char *dest, const char *source, size_t size)
  41. {
  42. size_t len = strlen(dest);
  43. dest += len;
  44. if (len > size)
  45. size = 0;
  46. else
  47. size -= len;
  48. return len + strlcpy(dest, source, size);
  49. }
  50. #endif
  51. char *strldup(const char *s, size_t n)
  52. {
  53. char *dst = (char*)malloc(sizeof(char) * (n + 1));
  54. strlcpy(dst, s, n);
  55. return dst;
  56. }