/* Copyright (C) 1991, 92, 93, 95, 96 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* * ISO C Standard: 4.11 STRING HANDLING <string.h> */ #ifndef _STRING_H #define _STRING_H 1 #include <features.h> __BEGIN_DECLS /* Get size_t and NULL from <stddef.h>. */ #define __need_size_t #define __need_NULL #include <stddef.h> /* Copy N bytes of SRC to DEST. */ extern __ptr_t memcpy __P ((__ptr_t __dest, __const __ptr_t __src, 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)); /* 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)); #if defined (__USE_SVID) || defined (__USE_BSD) || defined (__USE_XOPEN) extern __ptr_t memccpy __P ((__ptr_t __dest, __const __ptr_t __src, int __c, size_t __n)); #endif /* SVID. */ /* 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)); /* Search N bytes of S for C. */ extern __ptr_t memchr __P ((__const __ptr_t __s, int __c, size_t __n)); /* Copy SRC to DEST. */ extern char *strcpy __P ((char *__dest, __const char *__src)); /* Copy no more than N characters of SRC to DEST. */ extern char *strncpy __P ((char *__dest, __const char *__src, size_t __n)); /* Append SRC onto DEST. */ extern char *strcat __P ((char *__dest, __const char *__src)); /* Append no more than N characters from SRC onto DEST. */ extern char *strncat __P ((char *__dest, __const char *__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)); /* Compare the collated forms of S1 and S2. */ extern int strcoll __P ((__const char *__s1, __const char *__s2)); /* Put a transformation of SRC into no more than N bytes of DEST. */ extern size_t strxfrm __P ((char *__dest, __const char *__src, size_t __n)); #if defined(__USE_SVID) || defined(__USE_BSD) || defined(__USE_XOPEN_EXTENDED) /* Duplicate S, returning an identical malloc'd string. */ extern char *__strdup __P ((__const char *__s)); extern char *strdup __P ((__const char *__s)); #endif /* Return a malloc'd copy of at most N bytes of STRING. The resultant string is terminated even if no null terminator appears before STRING[N]. */ extern char *__strndup __P ((__const char *__string, size_t __n)); extern char *strndup __P ((__const char *__string, size_t __n)); #if defined (__USE_GNU) && defined (__GNUC__) /* 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); \ 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'; \ memcpy (__new, __old, __len); \ })) #endif /* 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)); /* 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)); /* Find the first occurence in S of any character in ACCEPT. */ extern char *strpbrk __P ((__const char *__s, __const char *__accept)); /* Find the first occurence 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 *__s, __const char *__delim)); #ifdef __USE_GNU /* Divide S into tokens separated by characters in DELIM. Information passed between calls are stored in SAVE_PTR. */ extern char *strtok_r __P ((char *__s, __const char *__delim, char **__save_ptr)); /* Find the first occurence of NEEDLE in HAYSTACK. NEEDLE is NEEDLELEN bytes long; HAYSTACK is HAYSTACKLEN bytes long. */ extern __ptr_t memmem __P ((__const __ptr_t __haystack, size_t __haystacklen, __const __ptr_t __needle, size_t __needlelen)); #endif /* Return the length of S. */ extern size_t strlen __P ((__const char *__s)); #ifdef __USE_GNU /* 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)); #ifdef __OPTIMIZE__ extern __inline size_t strnlen (__const char *__string, size_t __maxlen) { __const char *__end = memchr (__string, '\0', __maxlen); return __end ? __end - __string : __maxlen; } #endif #endif /* Return a string describing the meaning of the `errno' code in ERRNUM. */ extern char *strerror __P ((int __errnum)); #ifdef __USE_REENTRANT /* Reentrant version of `strerror'. If a temporary buffer is required, at most BUFLEN bytes of BUF will be used. */ extern char *__strerror_r __P ((int __errnum, char *__buf, size_t __buflen)); extern char *strerror_r __P ((int __errnum, char *__buf, size_t __buflen)); #endif #if defined(__USE_BSD) || defined(__USE_XOPEN_EXTENDED) /* 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)); /* Set N bytes of S to 0. */ extern void bzero __P ((__ptr_t __s, size_t __n)); /* Compare N bytes of S1 and S2 (same as memcmp). */ extern int bcmp __P ((__const __ptr_t __s1, __const __ptr_t __s2, size_t __n)); /* Find the first occurrence of C in S (same as strchr). */ extern char *index __P ((__const char *__s, int __c)); /* Find the last occurrence of C in S (same as strrchr). */ extern char *rindex __P ((__const char *__s, int __c)); /* 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)); /* Compare S1 and S2, ignoring case. */ extern int __strcasecmp __P ((__const char *__s1, __const char *__s2)); 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)); extern int strncasecmp __P ((__const char *__s1, __const char *__s2, size_t __n)); #endif /* Use BSD or X/Open Unix. */ #ifdef __USE_BSD /* 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 **__stringp, __const char *__delim)); extern char *strsep __P ((char **__stringp, __const char *__delim)); #endif #ifdef __USE_GNU /* Return a string describing the meaning of the signal number in SIG. */ extern char *strsignal __P ((int __sig)); /* Copy SRC to DEST, returning the address of the terminating '\0' in DEST. */ extern char *__stpcpy __P ((char *__dest, __const char *__src)); extern char *stpcpy __P ((char *__dest, __const char *__src)); /* Copy no more than N characters of SRC to DEST, returning the address of the last character written into DEST. */ extern char *__stpncpy __P ((char *__dest, __const char *__src, size_t __n)); extern char *stpncpy __P ((char *__dest, __const char *__src, size_t __n)); /* Sautee STRING briskly. */ extern char *strfry __P ((char *__string)); /* Frobnicate N bytes of S. */ extern __ptr_t memfrob __P ((__ptr_t __s, size_t __n)); #endif #ifdef __USE_MISC /* Return the file name within directory of FILENAME. */ extern char *basename __P ((__const char *__filename)); #endif __END_DECLS #endif /* string.h */