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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 | /* Copyright (C) 1991-1993,1995-2004,2007,2009 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, see <http://www.gnu.org/licenses/>. */ /* * 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)); libc_hidden_proto(memcpy) /* 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)); libc_hidden_proto(memmove) __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)); libc_hidden_proto(memccpy) #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)); libc_hidden_proto(memset) /* 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)); libc_hidden_proto(memcmp) /* Search N bytes of S for C. */ extern void *memchr (const void *__s, int __c, size_t __n) __THROW __attribute_pure__ __nonnull ((1)); libc_hidden_proto(memchr) __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)); libc_hidden_proto(rawmemchr) /* 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)); libc_hidden_proto(memrchr) #endif __BEGIN_NAMESPACE_STD /* Copy SRC to DEST. */ extern char *strcpy (char *__restrict __dest, const char *__restrict __src) __THROW __nonnull ((1, 2)); libc_hidden_proto(strcpy) /* 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)); libc_hidden_proto(strncpy) /* Append SRC onto DEST. */ extern char *strcat (char *__restrict __dest, const char *__restrict __src) __THROW __nonnull ((1, 2)); libc_hidden_proto(strcat) /* 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)); libc_hidden_proto(strncat) /* Compare S1 and S2. */ extern int strcmp (const char *__s1, const char *__s2) __THROW __attribute_pure__ __nonnull ((1, 2)); libc_hidden_proto(strcmp) /* 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)); libc_hidden_proto(strncmp) /* Compare the collated forms of S1 and S2. */ extern int strcoll (const char *__s1, const char *__s2) __THROW __attribute_pure__ __nonnull ((1, 2)); libc_hidden_proto(strcoll) /* 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_XOPEN2K8 && 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)); libc_hidden_proto(strcoll_l) /* 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)); libc_hidden_proto(strxfrm_l) #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)); libc_hidden_proto(strdup) #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_XOPEN2K8 extern char *strndup (const char *__string, size_t __n) __THROW __attribute_malloc__ __nonnull ((1)); libc_hidden_proto(strndup) #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)); libc_hidden_proto(strchr) /* Find the last occurrence of C in S. */ extern char *strrchr (const char *__s, int __c) __THROW __attribute_pure__ __nonnull ((1)); libc_hidden_proto(strrchr) __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)); libc_hidden_proto(strchrnul) #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)); libc_hidden_proto(strcspn) /* 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)); libc_hidden_proto(strspn) /* 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)); libc_hidden_proto(strpbrk) /* Find the first occurrence of NEEDLE in HAYSTACK. */ extern char *strstr (const char *__haystack, const char *__needle) __THROW __attribute_pure__ __nonnull ((1, 2)); libc_hidden_proto(strstr) /* Divide S into tokens separated by characters in DELIM. */ extern char *strtok (char *__restrict __s, const char *__restrict __delim) __THROW __nonnull ((2)); libc_hidden_proto(strtok) __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)); libc_hidden_proto(strtok_r) #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)); libc_hidden_proto(strcasestr) #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 __GNUC_PREREQ (3, 4) # define __mempcpy(dest, src, n) __builtin_mempcpy(dest, src, n) #else /* 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)); libc_hidden_proto(mempcpy) #endif __BEGIN_NAMESPACE_STD /* Return the length of S. */ extern size_t strlen (const char *__s) __THROW __attribute_pure__ __nonnull ((1)); libc_hidden_proto(strlen) __END_NAMESPACE_STD #ifdef __USE_XOPEN2K8 /* 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)); libc_hidden_proto(strnlen) #endif __BEGIN_NAMESPACE_STD /* Return a string describing the meaning of the `errno' code in ERRNUM. */ extern char *strerror (int __errnum) __THROW; libc_hidden_proto(strerror) __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)); libc_hidden_proto(__xpg_strerror_r) # 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)); libc_hidden_proto(__glibc_strerror_r) # 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 #if 0 /*defined __USE_XOPEN2K8 && defined __UCLIBC_HAS_XLOCALE__*/ /* Translate error number to string according to the locale L. */ extern char *strerror_l (int __errnum, __locale_t __l) __THROW; #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)); # elif defined(__UCLIBC_SUSV3_LEGACY_MACROS__) && !defined(_STRINGS_H) /* 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. */ /* Copy N bytes of SRC to DEST (like memmove, but args reversed). */ static __inline__ void bcopy (__const void *__src, void *__dest, size_t __n) { memmove(__dest, __src, __n); } /* Set N bytes of S to 0. */ static __inline__ void bzero (void *__s, size_t __n) { memset(__s, 0, __n); } /* Compare N bytes of S1 and S2 (same as memcmp). */ static __inline__ int bcmp (__const void *__s1, __const void *__s2, size_t __n) { return memcmp(__s1, __s2, __n); } /* Find the first occurrence of C in S (same as strchr). */ static __inline__ char *index (__const char *__s, int __c) { return strchr(__s, __c); } /* Find the last occurrence of C in S (same as strrchr). */ static __inline__ char *rindex (__const char *__s, int __c) { return strrchr(__s, __c); } # 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__)); libc_hidden_proto(ffs) /* The following two functions are non-standard but necessary for non-32 bit platforms. */ #ifdef __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)); libc_hidden_proto(strcasecmp) /* 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)); libc_hidden_proto(strncasecmp) #endif /* Use BSD. */ #if defined __USE_XOPEN2K8 && 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)); libc_hidden_proto(strcasecmp_l) extern int strncasecmp_l (const char *__s1, const char *__s2, size_t __n, __locale_t __loc) __THROW __attribute_pure__ __nonnull ((1, 2, 4)); libc_hidden_proto(strncasecmp_l) #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)); libc_hidden_proto(strsep) #endif #ifdef __USE_XOPEN2K8 /* Return a string describing the meaning of the signal number in SIG. */ extern char *strsignal (int __sig) __THROW; libc_hidden_proto(strsignal) /* 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)); libc_hidden_proto(stpcpy) /* 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)); #endif #ifdef __USE_GNU /* Compare S1 and S2 as strings holding name & indices/version numbers. */ extern int strverscmp (const char *__s1, const char *__s2) __THROW __attribute_pure__ __nonnull ((1, 2)); libc_hidden_proto(strverscmp) # 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 /* __USE_GNU */ #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)); libc_hidden_proto(strlcat) extern size_t strlcpy(char *__restrict dst, const char *__restrict src, size_t n) __THROW __nonnull ((1, 2)); libc_hidden_proto(strlcpy) #endif __END_DECLS #if defined(_LIBC) && defined(__UCLIBC_HAS_STRING_ARCH_OPT__) # if defined __i386__ # include <../libc/string/i386/string.h> # endif #endif #endif /* string.h */ |