string.h 3.7 KB

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  1. #ifndef __STRING_H
  2. #define __STRING_H
  3. #include <features.h>
  4. #include <sys/types.h>
  5. #include <stddef.h>
  6. /* Basic string functions */
  7. /* Return the length of S. */
  8. extern size_t strlen __P ((__const char *__s));
  9. /* Append SRC onto DEST. */
  10. extern char *strcat __P ((char *__restrict __dest,
  11. __const char *__restrict __src));
  12. /* Append no more than N characters from SRC onto DEST. */
  13. extern char *strncat __P ((char *__restrict __dest,
  14. __const char *__restrict __src, size_t __n));
  15. /* Copy SRC to DEST. */
  16. extern char *strcpy __P ((char *__restrict __dest,
  17. __const char *__restrict __src));
  18. /* Copy no more than N characters of SRC to DEST. */
  19. extern char *strncpy __P ((char *__restrict __dest,
  20. __const char *__restrict __src, size_t __n));
  21. /* Compare S1 and S2. */
  22. extern int strcmp __P ((__const char *__s1, __const char *__s2));
  23. /* Compare N characters of S1 and S2. */
  24. extern int strncmp __P ((__const char *__s1, __const char *__s2, size_t __n));
  25. /* Find the first occurrence of C in S. */
  26. extern char *strchr __P ((__const char *__s, int __c));
  27. /* Find the last occurrence of C in S. */
  28. extern char *strrchr __P ((__const char *__s, int __c));
  29. /* Duplicate S, returning an identical malloc'd string. */
  30. extern char *strdup __P ((__const char *__s));
  31. /* Basic mem functions */
  32. /* Copy N bytes of SRC to DEST. */
  33. extern __ptr_t memcpy __P ((__ptr_t __restrict __dest,
  34. __const __ptr_t __restrict __src, size_t __n));
  35. /* Copy no more than N bytes of SRC to DEST, stopping when C is found.
  36. Return the position in DEST one byte past where C was copied,
  37. or NULL if C was not found in the first N bytes of SRC. */
  38. extern __ptr_t memccpy __P ((__ptr_t __dest, __const __ptr_t __src,
  39. int __c, size_t __n));
  40. /* Search N bytes of S for C. */
  41. extern __ptr_t memchr __P ((__const __ptr_t __s, int __c, size_t __n));
  42. /* Set N bytes of S to C. */
  43. extern __ptr_t memset __P ((__ptr_t __s, int __c, size_t __n));
  44. /* Compare N bytes of S1 and S2. */
  45. extern int memcmp __P ((__const __ptr_t __s1, __const __ptr_t __s2,
  46. size_t __n));
  47. /* Copy N bytes of SRC to DEST, guaranteeing
  48. correct behavior for overlapping strings. */
  49. extern __ptr_t memmove __P ((__ptr_t __dest, __const __ptr_t __src,
  50. size_t __n));
  51. /* Minimal (very!) locale support */
  52. #define strcoll strcmp
  53. #define strxfrm strncpy
  54. /* BSDisms */
  55. #define index strchr
  56. #define rindex strrchr
  57. /* Other common BSD functions */
  58. /* Compare S1 and S2, ignoring case. */
  59. extern int strcasecmp __P ((__const char *__s1, __const char *__s2));
  60. /* Compare no more than N chars of S1 and S2, ignoring case. */
  61. extern int strncasecmp __P ((__const char *__s1, __const char *__s2,
  62. size_t __n));
  63. /* Find the first occurrence in S of any character in ACCEPT. */
  64. extern char *strpbrk __P ((__const char *__s, __const char *__accept));
  65. /* Return the next DELIM-delimited token from *STRINGP,
  66. terminating it with a '\0', and update *STRINGP to point past it. */
  67. extern char *strsep __P ((char **__restrict __stringp,
  68. __const char *__restrict __delim));
  69. /* Find the first occurrence of NEEDLE in HAYSTACK. */
  70. extern char *strstr __P ((__const char *__haystack, __const char *__needle));
  71. /* Divide S into tokens separated by characters in DELIM. */
  72. extern char *strtok __P ((char *__restrict __s,
  73. __const char *__restrict __delim));
  74. /* Return the length of the initial segment of S which
  75. consists entirely of characters not in REJECT. */
  76. extern size_t strcspn __P ((__const char *__s, __const char *__reject));
  77. /* Return the length of the initial segment of S which
  78. consists entirely of characters in ACCEPT. */
  79. extern size_t strspn __P ((__const char *__s, __const char *__accept));
  80. /* More BSD compatabilty */
  81. #define bcmp memcmp
  82. /* Linux silly hour */
  83. char *strfry __P ((char *));
  84. #endif