summaryrefslogtreecommitdiff
path: root/include/string.h
blob: 6dff15b2d71079eda65ebe2ff160a1a3120bcab4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146

#ifndef __STRING_H
#define __STRING_H
#include <features.h>
#include <sys/types.h>
#include <stddef.h>

/* Basic string functions */

/* Return the length of S.  */
extern size_t strlen __P ((__const char *__s));
/* Append SRC onto DEST.  */
extern char *strcat __P ((char *__restrict __dest,
			  __const char *__restrict __src));
/* Append no more than N characters from SRC onto DEST.  */
extern char *strncat __P ((char *__restrict __dest,
			   __const char *__restrict __src, size_t __n));

/* Copy SRC to DEST.  */
extern char *strcpy __P ((char *__restrict __dest,
			  __const char *__restrict __src));
/* Copy no more than N characters of SRC to DEST.  */
extern char *strncpy __P ((char *__restrict __dest,
			   __const char *__restrict __src, size_t __n));

/* Compare S1 and S2.  */
extern int strcmp __P ((__const char *__s1, __const char *__s2));
/* Compare N characters of S1 and S2.  */
extern int strncmp __P ((__const char *__s1, __const char *__s2, size_t __n));

/* Find the first occurrence of C in S.  */
extern char *strchr __P ((__const char *__s, int __c));
/* Find the last occurrence of C in S.  */
extern char *strrchr __P ((__const char *__s, int __c));
/* Duplicate S, returning an identical malloc'd string.  */
extern char *strdup __P ((__const char *__s));

/* Basic mem functions */

/* Copy N bytes of SRC to DEST.  */
extern __ptr_t memcpy __P ((__ptr_t __restrict __dest,
			    __const __ptr_t __restrict __src, size_t __n));
/* Copy no more than N bytes of SRC to DEST, stopping when C is found.
   Return the position in DEST one byte past where C was copied,
   or NULL if C was not found in the first N bytes of SRC.  */
extern __ptr_t memccpy __P ((__ptr_t __dest, __const __ptr_t __src,
			     int __c, size_t __n));
/* Search N bytes of S for C.  */
extern __ptr_t memchr __P ((__const __ptr_t __s, int __c, size_t __n));
/* Set N bytes of S to C.  */
extern __ptr_t memset __P ((__ptr_t __s, int __c, size_t __n));
/* Compare N bytes of S1 and S2.  */
extern int memcmp __P ((__const __ptr_t __s1, __const __ptr_t __s2,
			size_t __n));
/* Copy N bytes of SRC to DEST, guaranteeing
   correct behavior for overlapping strings.  */
extern __ptr_t memmove __P ((__ptr_t __dest, __const __ptr_t __src,
			     size_t __n));


/* Minimal (very!) locale support */
#define strcoll strcmp
#define strxfrm strncpy

/* BSDisms */
#define index strchr
#define rindex strrchr

/* Return the position of the first bit set in I, or 0 if none are set.
   The least-significant bit is position 1, the most-significant 32.  */
extern int ffs __P ((int __i)) __attribute__ ((const));

/* Other common BSD functions */
/* Set N bytes of S to 0.  */
extern void bzero __P ((__ptr_t __s, size_t __n));
/* Copy N bytes of SRC to DEST (like memmove, but args reversed).  */
extern void bcopy __P ((__const __ptr_t __src, __ptr_t __dest, size_t __n));

/* Compare S1 and S2, ignoring case.  */
extern int strcasecmp __P ((__const char *__s1, __const char *__s2));
/* Compare no more than N chars of S1 and S2, ignoring case.  */
extern int strncasecmp __P ((__const char *__s1, __const char *__s2,
			     size_t __n));
/* Find the first occurrence in S of any character in ACCEPT.  */
extern char *strpbrk __P ((__const char *__s, __const char *__accept));
/* Return the next DELIM-delimited token from *STRINGP,
   terminating it with a '\0', and update *STRINGP to point past it.  */
extern char *strsep __P ((char **__restrict __stringp,
			  __const char *__restrict __delim));
/* Find the first occurrence of NEEDLE in HAYSTACK.  */
extern char *strstr __P ((__const char *__haystack, __const char *__needle));
/* Divide S into tokens separated by characters in DELIM.  */
extern char *strtok __P ((char *__restrict __s,
			  __const char *__restrict __delim));
/* Divide S into tokens separated by characters in DELIM.  Information
   passed between calls are stored in SAVE_PTR.  */
extern char *__strtok_r __P ((char *__restrict __s,
                              __const char *__restrict __delim,
                              char **__restrict __save_ptr));
#if defined __USE_POSIX || defined __USE_MISC
extern char *strtok_r __P ((char *__restrict __s,
                            __const char *__restrict __delim,
                            char **__restrict __save_ptr));
#endif
/* Return the length of the initial segment of S which
   consists entirely of characters not in REJECT.  */
extern size_t strcspn __P ((__const char *__s, __const char *__reject));
/* Return the length of the initial segment of S which
   consists entirely of characters in ACCEPT.  */
extern size_t strspn __P ((__const char *__s, __const char *__accept));

/* Return a string describing the meaning of the signal number in SIG.  */
extern char *strsignal __P ((int __sig));

/* More BSD compatabilty */
int bcmp(const void *s1, const void *s2, size_t n);

/* Linux silly hour */
char *strfry __P ((char *));

/* Find the length of STRING, but scan at most MAXLEN characters.
   If no '\0' terminator is found in that many characters, return MAXLEN.  */
extern size_t strnlen __P ((__const char *__string, size_t __maxlen));

/* Duplicate S, returning an identical alloca'd string.  */
# define strdupa(s)							      \
  (__extension__							      \
    ({									      \
      __const char *__old = (s);					      \
      size_t __len = strlen (__old) + 1;				      \
      char *__new = __builtin_alloca (__len);				      \
      (char *) memcpy (__new, __old, __len);				      \
    }))

/* Return an alloca'd copy of at most N bytes of string.  */
# define strndupa(s, n)							      \
  (__extension__							      \
    ({									      \
      __const char *__old = (s);					      \
      size_t __len = strnlen (__old, (n));				      \
      char *__new = __builtin_alloca (__len + 1);			      \
      __new[__len] = '\0';						      \
      (char *) memcpy (__new, __old, __len);				      \
    }))

#endif