| /* Copyright (C) 1991-1993, 1995-2003, 2004 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 Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| /* |
| * ISO C99 Standard: 7.21 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> |
| |
| |
| __BEGIN_NAMESPACE_STD |
| /* Copy N bytes of SRC to DEST. */ |
| extern void *memcpy (void *__restrict __dest, |
| __const void *__restrict __src, size_t __n) |
| __THROW __nonnull ((1, 2)); |
| /* Copy N bytes of SRC to DEST, guaranteeing |
| correct behavior for overlapping strings. */ |
| extern void *memmove (void *__dest, __const void *__src, size_t __n) |
| __THROW __nonnull ((1, 2)); |
| __END_NAMESPACE_STD |
| |
| /* 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. */ |
| #if defined __USE_SVID || defined __USE_BSD || defined __USE_XOPEN |
| extern void *memccpy (void *__restrict __dest, __const void *__restrict __src, |
| int __c, size_t __n) |
| __THROW __nonnull ((1, 2)); |
| #endif /* SVID. */ |
| |
| |
| __BEGIN_NAMESPACE_STD |
| /* Set N bytes of S to C. */ |
| extern void *memset (void *__s, int __c, size_t __n) __THROW __nonnull ((1)); |
| |
| /* Compare N bytes of S1 and S2. */ |
| extern int memcmp (__const void *__s1, __const void *__s2, size_t __n) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| |
| /* Search N bytes of S for C. */ |
| extern void *memchr (__const void *__s, int __c, size_t __n) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| __END_NAMESPACE_STD |
| |
| #ifdef __USE_GNU |
| /* Search in S for C. This is similar to `memchr' but there is no |
| length limit. */ |
| extern void *rawmemchr (__const void *__s, int __c) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| |
| /* Search N bytes of S for the final occurrence of C. */ |
| extern void *memrchr (__const void *__s, int __c, size_t __n) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| #endif |
| |
| |
| __BEGIN_NAMESPACE_STD |
| /* Copy SRC to DEST. */ |
| extern char *strcpy (char *__restrict __dest, __const char *__restrict __src) |
| __THROW __nonnull ((1, 2)); |
| /* Copy no more than N characters of SRC to DEST. */ |
| extern char *strncpy (char *__restrict __dest, |
| __const char *__restrict __src, size_t __n) |
| __THROW __nonnull ((1, 2)); |
| |
| /* Append SRC onto DEST. */ |
| extern char *strcat (char *__restrict __dest, __const char *__restrict __src) |
| __THROW __nonnull ((1, 2)); |
| /* Append no more than N characters from SRC onto DEST. */ |
| extern char *strncat (char *__restrict __dest, __const char *__restrict __src, |
| size_t __n) __THROW __nonnull ((1, 2)); |
| |
| /* Compare S1 and S2. */ |
| extern int strcmp (__const char *__s1, __const char *__s2) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| /* Compare N characters of S1 and S2. */ |
| extern int strncmp (__const char *__s1, __const char *__s2, size_t __n) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| |
| /* Compare the collated forms of S1 and S2. */ |
| extern int strcoll (__const char *__s1, __const char *__s2) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| /* Put a transformation of SRC into no more than N bytes of DEST. */ |
| extern size_t strxfrm (char *__restrict __dest, |
| __const char *__restrict __src, size_t __n) |
| __THROW __nonnull ((2)); |
| __END_NAMESPACE_STD |
| |
| #if defined __USE_GNU && defined __UCLIBC_HAS_XLOCALE__ |
| /* The following functions are equivalent to the both above but they |
| take the locale they use for the collation as an extra argument. |
| This is not standardsized but something like will come. */ |
| # include <xlocale.h> |
| |
| /* Compare the collated forms of S1 and S2 using rules from L. */ |
| extern int strcoll_l (__const char *__s1, __const char *__s2, __locale_t __l) |
| __THROW __attribute_pure__ __nonnull ((1, 2, 3)); |
| /* Put a transformation of SRC into no more than N bytes of DEST. */ |
| extern size_t strxfrm_l (char *__dest, __const char *__src, size_t __n, |
| __locale_t __l) __THROW __nonnull ((2, 4)); |
| #endif |
| |
| #if defined __USE_SVID || defined __USE_BSD || defined __USE_XOPEN_EXTENDED |
| /* Duplicate S, returning an identical malloc'd string. */ |
| extern char *strdup (__const char *__s) |
| __THROW __attribute_malloc__ __nonnull ((1)); |
| #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]. */ |
| #if defined __USE_GNU |
| extern char *strndup (__const char *__string, size_t __n) |
| __THROW __attribute_malloc__ __nonnull ((1)); |
| #endif |
| |
| #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 = (char *) __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 = (char *) __builtin_alloca (__len + 1); \ |
| __new[__len] = '\0'; \ |
| (char *) memcpy (__new, __old, __len); \ |
| })) |
| #endif |
| |
| __BEGIN_NAMESPACE_STD |
| /* Find the first occurrence of C in S. */ |
| extern char *strchr (__const char *__s, int __c) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| /* Find the last occurrence of C in S. */ |
| extern char *strrchr (__const char *__s, int __c) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| __END_NAMESPACE_STD |
| |
| #ifdef __USE_GNU |
| /* This function is similar to `strchr'. But it returns a pointer to |
| the closing NUL byte in case C is not found in S. */ |
| extern char *strchrnul (__const char *__s, int __c) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| #endif |
| |
| __BEGIN_NAMESPACE_STD |
| /* Return the length of the initial segment of S which |
| consists entirely of characters not in REJECT. */ |
| extern size_t strcspn (__const char *__s, __const char *__reject) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| /* Return the length of the initial segment of S which |
| consists entirely of characters in ACCEPT. */ |
| extern size_t strspn (__const char *__s, __const char *__accept) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| /* Find the first occurrence in S of any character in ACCEPT. */ |
| extern char *strpbrk (__const char *__s, __const char *__accept) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| /* Find the first occurrence of NEEDLE in HAYSTACK. */ |
| extern char *strstr (__const char *__haystack, __const char *__needle) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| |
| |
| /* Divide S into tokens separated by characters in DELIM. */ |
| extern char *strtok (char *__restrict __s, __const char *__restrict __delim) |
| __THROW __nonnull ((2)); |
| __END_NAMESPACE_STD |
| |
| /* Divide S into tokens separated by characters in DELIM. Information |
| passed between calls are stored in SAVE_PTR. */ |
| #if 0 /* uClibc: disabled */ |
| extern char *__strtok_r (char *__restrict __s, |
| __const char *__restrict __delim, |
| char **__restrict __save_ptr) |
| __THROW __nonnull ((2, 3)); |
| #endif |
| #if defined __USE_POSIX || defined __USE_MISC |
| extern char *strtok_r (char *__restrict __s, __const char *__restrict __delim, |
| char **__restrict __save_ptr) |
| __THROW __nonnull ((2, 3)); |
| #endif |
| |
| #ifdef __USE_GNU |
| /* Similar to `strstr' but this function ignores the case of both strings. */ |
| extern char *strcasestr (__const char *__haystack, __const char *__needle) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| #endif |
| |
| #ifdef __USE_GNU |
| /* Find the first occurrence of NEEDLE in HAYSTACK. |
| NEEDLE is NEEDLELEN bytes long; |
| HAYSTACK is HAYSTACKLEN bytes long. */ |
| extern void *memmem (__const void *__haystack, size_t __haystacklen, |
| __const void *__needle, size_t __needlelen) |
| __THROW __attribute_pure__ __nonnull ((1, 3)); |
| |
| /* Copy N bytes of SRC to DEST, return pointer to bytes after the |
| last written byte. */ |
| #if 0 /* uClibc: disabled */ |
| extern void *__mempcpy (void *__restrict __dest, |
| __const void *__restrict __src, size_t __n) |
| __THROW __nonnull ((1, 2)); |
| #endif |
| extern void *mempcpy (void *__restrict __dest, |
| __const void *__restrict __src, size_t __n) |
| __THROW __nonnull ((1, 2)); |
| #endif |
| |
| |
| __BEGIN_NAMESPACE_STD |
| /* Return the length of S. */ |
| extern size_t strlen (__const char *__s) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| __END_NAMESPACE_STD |
| |
| #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 (__const char *__string, size_t __maxlen) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| #endif |
| |
| |
| __BEGIN_NAMESPACE_STD |
| /* Return a string describing the meaning of the `errno' code in ERRNUM. */ |
| extern char *strerror (int __errnum) __THROW; |
| __END_NAMESPACE_STD |
| #if defined __USE_XOPEN2K || defined __USE_MISC |
| /* Reentrant version of `strerror'. |
| There are 2 flavors of `strerror_r', GNU which returns the string |
| and may or may not use the supplied temporary buffer and POSIX one |
| which fills the string into the buffer. |
| To use the POSIX version, -D_XOPEN_SOURCE=600 or -D_POSIX_C_SOURCE=200112L |
| without -D_GNU_SOURCE is needed, otherwise the GNU version is |
| preferred. */ |
| # if defined __USE_XOPEN2K && !defined __USE_GNU |
| /* Fill BUF with a string describing the meaning of the `errno' code in |
| ERRNUM. */ |
| extern int __xpg_strerror_r (int __errnum, char *__buf, size_t __buflen) |
| __THROW __nonnull ((2)); |
| # ifdef __REDIRECT_NTH |
| extern int __REDIRECT_NTH (strerror_r, |
| (int __errnum, char *__buf, size_t __buflen), |
| __xpg_strerror_r) __nonnull ((2)); |
| # else |
| # define strerror_r __xpg_strerror_r |
| # endif |
| # else |
| /* If a temporary buffer is required, at most BUFLEN bytes of BUF will be |
| used. */ |
| extern char *__glibc_strerror_r (int __errnum, char *__buf, size_t __buflen) |
| __THROW __nonnull ((2)); |
| # ifdef __REDIRECT_NTH |
| extern char * __REDIRECT_NTH (strerror_r, |
| (int __errnum, char *__buf, size_t __buflen), |
| __glibc_strerror_r) __nonnull ((2)); |
| # else |
| # define strerror_r __glibc_strerror_r |
| # endif |
| # endif |
| #endif |
| |
| /* We define this function always since `bzero' is sometimes needed when |
| the namespace rules does not allow this. */ |
| #if 0 /* uClibc: disabled */ |
| extern void __bzero (void *__s, size_t __n) __THROW __nonnull ((1)); |
| #endif |
| |
| #ifdef __USE_BSD |
| # ifdef __UCLIBC_SUSV3_LEGACY__ |
| /* Copy N bytes of SRC to DEST (like memmove, but args reversed). */ |
| extern void bcopy (__const void *__src, void *__dest, size_t __n) |
| __THROW __nonnull ((1, 2)); |
| |
| /* Set N bytes of S to 0. */ |
| extern void bzero (void *__s, size_t __n) __THROW __nonnull ((1)); |
| |
| /* Compare N bytes of S1 and S2 (same as memcmp). */ |
| extern int bcmp (__const void *__s1, __const void *__s2, size_t __n) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| |
| /* Find the first occurrence of C in S (same as strchr). */ |
| extern char *index (__const char *__s, int __c) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| |
| /* Find the last occurrence of C in S (same as strrchr). */ |
| extern char *rindex (__const char *__s, int __c) |
| __THROW __attribute_pure__ __nonnull ((1)); |
| # else |
| # ifdef __UCLIBC_SUSV3_LEGACY_MACROS__ |
| /* bcopy/bzero/bcmp/index/rindex are marked LEGACY in SuSv3. |
| * They are replaced as proposed by SuSv3. Don't sync this part |
| * with glibc and keep it in sync with strings.h. */ |
| |
| # define bcopy(src,dest,n) (memmove((dest), (src), (n)), (void) 0) |
| # define bzero(s,n) (memset((s), '\0', (n)), (void) 0) |
| # define bcmp(s1,s2,n) memcmp((s1), (s2), (size_t)(n)) |
| # define index(s,c) strchr((s), (c)) |
| # define rindex(s,c) strrchr((s), (c)) |
| # endif |
| # endif |
| |
| /* 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 (int __i) __THROW __attribute__ ((__const__)); |
| |
| /* The following two functions are non-standard but necessary for non-32 bit |
| platforms. */ |
| #if 0 /*def __USE_GNU*/ |
| extern int ffsl (long int __l) __THROW __attribute__ ((__const__)); |
| # ifdef __GNUC__ |
| __extension__ extern int ffsll (long long int __ll) |
| __THROW __attribute__ ((__const__)); |
| # endif |
| # endif |
| |
| /* Compare S1 and S2, ignoring case. */ |
| extern int strcasecmp (__const char *__s1, __const char *__s2) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| |
| /* Compare no more than N chars of S1 and S2, ignoring case. */ |
| extern int strncasecmp (__const char *__s1, __const char *__s2, size_t __n) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| #endif /* Use BSD. */ |
| |
| #if defined __USE_GNU && defined __UCLIBC_HAS_XLOCALE__ |
| /* Again versions of a few functions which use the given locale instead |
| of the global one. */ |
| extern int strcasecmp_l (__const char *__s1, __const char *__s2, |
| __locale_t __loc) |
| __THROW __attribute_pure__ __nonnull ((1, 2, 3)); |
| |
| extern int strncasecmp_l (__const char *__s1, __const char *__s2, |
| size_t __n, __locale_t __loc) |
| __THROW __attribute_pure__ __nonnull ((1, 2, 4)); |
| #endif |
| |
| #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 (char **__restrict __stringp, |
| __const char *__restrict __delim) |
| __THROW __nonnull ((1, 2)); |
| #endif |
| |
| #ifdef __USE_GNU |
| /* Compare S1 and S2 as strings holding name & indices/version numbers. */ |
| #if 0 |
| extern int strverscmp (__const char *__s1, __const char *__s2) |
| __THROW __attribute_pure__ __nonnull ((1, 2)); |
| #endif |
| |
| /* Return a string describing the meaning of the signal number in SIG. */ |
| extern char *strsignal (int __sig) __THROW; |
| |
| /* Copy SRC to DEST, returning the address of the terminating '\0' in DEST. */ |
| #if 0 /* uClibc: disabled */ |
| extern char *__stpcpy (char *__restrict __dest, __const char *__restrict __src) |
| __THROW __nonnull ((1, 2)); |
| #endif |
| extern char *stpcpy (char *__restrict __dest, __const char *__restrict __src) |
| __THROW __nonnull ((1, 2)); |
| |
| /* Copy no more than N characters of SRC to DEST, returning the address of |
| the last character written into DEST. */ |
| #if 0 /* uClibc: disabled */ |
| extern char *__stpncpy (char *__restrict __dest, |
| __const char *__restrict __src, size_t __n) |
| __THROW __nonnull ((1, 2)); |
| #endif |
| extern char *stpncpy (char *__restrict __dest, |
| __const char *__restrict __src, size_t __n) |
| __THROW __nonnull ((1, 2)); |
| |
| #if 0 /* uClibc does not support strfry or memfrob. */ |
| /* Sautee STRING briskly. */ |
| extern char *strfry (char *__string) __THROW __nonnull ((1)); |
| |
| /* Frobnicate N bytes of S. */ |
| extern void *memfrob (void *__s, size_t __n) __THROW __nonnull ((1)); |
| #endif |
| |
| # ifndef basename |
| /* Return the file name within directory of FILENAME. We don't |
| declare the function if the `basename' macro is available (defined |
| in <libgen.h>) which makes the XPG version of this function |
| available. */ |
| extern char *basename (__const char *__filename) __THROW __nonnull ((1)); |
| # endif |
| #endif |
| |
| |
| #ifdef __USE_BSD |
| /* Two OpenBSD extension functions. */ |
| extern size_t strlcat(char *__restrict dst, const char *__restrict src, |
| size_t n) __THROW __nonnull ((1, 2)); |
| extern size_t strlcpy(char *__restrict dst, const char *__restrict src, |
| size_t n) __THROW __nonnull ((1, 2)); |
| #endif |
| |
| __END_DECLS |
| |
| #endif /* string.h */ |
