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02ac66c5 | 1 | /* Copyright (C) 1991, 92, 93, 95, 96 Free Software Foundation, Inc. |
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2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Library General Public License as | |
6 | published by the Free Software Foundation; either version 2 of the | |
7 | License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Library General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Library General Public | |
15 | License along with the GNU C Library; see the file COPYING.LIB. If | |
b0d20a87 | 16 | not, write to the Free Software Foundation, Inc., 675 Mass Ave, |
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17 | Cambridge, MA 02139, USA. */ |
18 | ||
19 | /* | |
20 | * ANSI Standard: 4.11 STRING HANDLING <string.h> | |
21 | */ | |
22 | ||
23 | #ifndef _STRING_H | |
24 | ||
25 | #define _STRING_H 1 | |
26 | #include <features.h> | |
27 | ||
28 | __BEGIN_DECLS | |
29 | ||
30 | /* Get size_t and NULL from <stddef.h>. */ | |
31 | #define __need_size_t | |
32 | #define __need_NULL | |
33 | #include <stddef.h> | |
34 | ||
35 | ||
36 | /* Copy N bytes of SRC to DEST. */ | |
37 | extern __ptr_t memcpy __P ((__ptr_t __dest, __const __ptr_t __src, | |
38 | size_t __n)); | |
39 | /* Copy N bytes of SRC to DEST, guaranteeing | |
40 | correct behavior for overlapping strings. */ | |
41 | extern __ptr_t memmove __P ((__ptr_t __dest, __const __ptr_t __src, | |
42 | size_t __n)); | |
43 | ||
44 | /* Copy no more than N bytes of SRC to DEST, stopping when C is found. | |
45 | Return the position in DEST one byte past where C was copied, | |
46 | or NULL if C was not found in the first N bytes of SRC. */ | |
47 | extern __ptr_t __memccpy __P ((__ptr_t __dest, __const __ptr_t __src, | |
48 | int __c, size_t __n)); | |
49 | #if defined (__USE_SVID) || defined (__USE_BSD) | |
50 | extern __ptr_t memccpy __P ((__ptr_t __dest, __const __ptr_t __src, | |
51 | int __c, size_t __n)); | |
52 | #ifdef __OPTIMIZE__ | |
53 | #define memccpy(dest, src, c, n) __memccpy((dest), (src), (c), (n)) | |
54 | #endif /* Optimizing. */ | |
55 | #endif /* SVID. */ | |
56 | ||
57 | ||
58 | /* Set N bytes of S to C. */ | |
59 | extern __ptr_t memset __P ((__ptr_t __s, int __c, size_t __n)); | |
60 | ||
61 | /* Compare N bytes of S1 and S2. */ | |
62 | extern int memcmp __P ((__const __ptr_t __s1, __const __ptr_t __s2, | |
63 | size_t __n)); | |
64 | ||
65 | /* Search N bytes of S for C. */ | |
66 | extern __ptr_t memchr __P ((__const __ptr_t __s, int __c, size_t __n)); | |
67 | ||
68 | ||
69 | /* Copy SRC to DEST. */ | |
70 | extern char *strcpy __P ((char *__dest, __const char *__src)); | |
71 | /* Copy no more than N characters of SRC to DEST. */ | |
72 | extern char *strncpy __P ((char *__dest, __const char *__src, size_t __n)); | |
73 | ||
74 | /* Append SRC onto DEST. */ | |
75 | extern char *strcat __P ((char *__dest, __const char *__src)); | |
76 | /* Append no more than N characters from SRC onto DEST. */ | |
77 | extern char *strncat __P ((char *__dest, __const char *__src, size_t __n)); | |
78 | ||
79 | /* Compare S1 and S2. */ | |
80 | extern int strcmp __P ((__const char *__s1, __const char *__s2)); | |
81 | /* Compare N characters of S1 and S2. */ | |
82 | extern int strncmp __P ((__const char *__s1, __const char *__s2, size_t __n)); | |
83 | ||
84 | /* Compare the collated forms of S1 and S2. */ | |
85 | extern int strcoll __P ((__const char *__s1, __const char *__s2)); | |
86 | /* Put a transformation of SRC into no more than N bytes of DEST. */ | |
87 | extern size_t strxfrm __P ((char *__dest, __const char *__src, size_t __n)); | |
88 | ||
89 | #if defined (__USE_SVID) || defined (__USE_BSD) | |
90 | /* Duplicate S, returning an identical malloc'd string. */ | |
91 | extern char *strdup __P ((__const char *__s)); | |
92 | #endif | |
93 | ||
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94 | #if defined (__USE_GNU) && defined (__GNUC__) |
95 | /* Duplicate S, returning an identical alloca'd string. */ | |
96 | #define strdupa(s) \ | |
97 | ({ \ | |
98 | const char *__old = (s); \ | |
99 | size_t __len = strlen (__old) + 1; \ | |
100 | memcpy (__builtin_alloca (__len), __old, __len); \ | |
101 | }) | |
102 | #endif | |
103 | ||
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104 | /* Find the first occurrence of C in S. */ |
105 | extern char *strchr __P ((__const char *__s, int __c)); | |
106 | /* Find the last occurrence of C in S. */ | |
107 | extern char *strrchr __P ((__const char *__s, int __c)); | |
108 | ||
109 | /* Return the length of the initial segment of S which | |
110 | consists entirely of characters not in REJECT. */ | |
111 | extern size_t strcspn __P ((__const char *__s, __const char *__reject)); | |
112 | /* Return the length of the initial segment of S which | |
113 | consists entirely of characters in ACCEPT. */ | |
114 | extern size_t strspn __P ((__const char *__s, __const char *__accept)); | |
115 | /* Find the first occurence in S of any character in ACCEPT. */ | |
116 | extern char *strpbrk __P ((__const char *__s, __const char *__accept)); | |
117 | /* Find the first occurence of NEEDLE in HAYSTACK. */ | |
118 | extern char *strstr __P ((__const char *__haystack, __const char *__needle)); | |
119 | /* Divide S into tokens separated by characters in DELIM. */ | |
120 | extern char *strtok __P ((char *__s, __const char *__delim)); | |
121 | ||
122 | #ifdef __USE_GNU | |
123 | /* Find the first occurence of NEEDLE in HAYSTACK. | |
124 | NEEDLE is NEEDLELEN bytes long; | |
125 | HAYSTACK is HAYSTACKLEN bytes long. */ | |
126 | extern __ptr_t memmem __P ((__const __ptr_t __haystack, size_t __haystacklen, | |
127 | __const __ptr_t __needle, size_t __needlelen)); | |
128 | #endif | |
129 | ||
8d71c7b0 | 130 | |
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131 | /* Return the length of S. */ |
132 | extern size_t strlen __P ((__const char *__s)); | |
133 | ||
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134 | #ifdef __USE_GNU |
135 | /* Find the length of STRING, but scan at most MAXLEN characters. | |
136 | If no '\0' terminator is found in that many characters, return MAXLEN. */ | |
137 | extern size_t strnlen __P ((__const char *__string, size_t __maxlen)); | |
138 | ||
139 | #ifdef __OPTIMIZE__ | |
140 | extern __inline size_t | |
141 | strnlen (__const char *__string, size_t __maxlen) | |
142 | { | |
143 | __const char *__end = memchr (__string, '\0', __maxlen); | |
144 | return __end ? __end - __string : __maxlen; | |
145 | } | |
146 | #endif | |
147 | #endif | |
148 | ||
149 | ||
60478656 | 150 | /* Return a string describing the meaning of the `errno' code in ERRNUM. */ |
28f540f4 | 151 | extern char *strerror __P ((int __errnum)); |
60478656 RM |
152 | #ifdef __USE_REENTRANT |
153 | /* Reentrant version of `strerror'. If a temporary buffer is required, at | |
154 | most BUFLEN bytes of BUF will be used. */ | |
155 | extern char *strerror_r __P ((int __errnum, char *__buf, int __buflen)); | |
156 | #endif | |
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157 | |
158 | #ifdef __USE_BSD | |
159 | /* Find the first occurrence of C in S (same as strchr). */ | |
160 | extern char *index __P ((__const char *__s, int __c)); | |
161 | ||
162 | /* Find the last occurrence of C in S (same as strrchr). */ | |
163 | extern char *rindex __P ((__const char *__s, int __c)); | |
164 | ||
165 | /* Copy N bytes of SRC to DEST (like memmove, but args reversed). */ | |
166 | extern void bcopy __P ((__const __ptr_t __src, __ptr_t __dest, size_t __n)); | |
167 | ||
168 | /* Set N bytes of S to 0. */ | |
169 | extern void bzero __P ((__ptr_t __s, size_t __n)); | |
170 | ||
171 | /* Compare N bytes of S1 and S2 (same as memcmp). */ | |
172 | extern int bcmp __P ((__const __ptr_t __s1, __const __ptr_t __s2, size_t __n)); | |
173 | ||
174 | /* Return the position of the first bit set in I, or 0 if none are set. | |
175 | The least-significant bit is position 1, the most-significant 32. */ | |
176 | extern int ffs __P ((int __i)); | |
177 | ||
178 | /* Compare S1 and S2, ignoring case. */ | |
3ec41e03 | 179 | extern int __strcasecmp __P ((__const char *__s1, __const char *__s2)); |
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180 | extern int strcasecmp __P ((__const char *__s1, __const char *__s2)); |
181 | ||
182 | /* Return the next DELIM-delimited token from *STRINGP, | |
183 | terminating it with a '\0', and update *STRINGP to point past it. */ | |
184 | extern char *strsep __P ((char **__stringp, __const char *__delim)); | |
185 | #endif | |
186 | ||
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187 | #ifdef __USE_GNU |
188 | /* Compare no more than N chars of S1 and S2, ignoring case. */ | |
189 | extern int strncasecmp __P ((__const char *__s1, __const char *__s2, | |
190 | size_t __n)); | |
191 | ||
192 | /* Return a string describing the meaning of the signal number in SIG. */ | |
193 | extern char *strsignal __P ((int __sig)); | |
194 | ||
195 | /* Copy SRC to DEST, returning the address of the terminating '\0' in DEST. */ | |
3ec41e03 | 196 | extern char *__stpcpy __P ((char *__dest, __const char *__src)); |
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197 | extern char *stpcpy __P ((char *__dest, __const char *__src)); |
198 | ||
199 | /* Copy no more than N characters of SRC to DEST, returning the address of | |
200 | the last character written into DEST. */ | |
3ec41e03 | 201 | extern char *__stpncpy __P ((char *__dest, __const char *__src, size_t __n)); |
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202 | extern char *stpncpy __P ((char *__dest, __const char *__src, size_t __n)); |
203 | ||
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204 | /* Sautee STRING briskly. */ |
205 | extern char *strfry __P ((char *__string)); | |
206 | ||
207 | /* Frobnicate N bytes of S. */ | |
208 | extern __ptr_t memfrob __P ((__ptr_t __s, size_t __n)); | |
209 | #endif | |
210 | ||
211 | __END_DECLS | |
212 | ||
213 | #endif /* string.h */ |