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1/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
2/* A GNU-like <string.h>.
3
4 Copyright (C) 1995-1996, 2001-2008 Free Software Foundation, Inc.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software Foundation,
18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
19
20#ifndef _GL_STRING_H
21
22/* The include_next requires a split double-inclusion guard. */
23#include_next <string.h>
24
25#ifndef _GL_STRING_H
26#define _GL_STRING_H
27
28
29#ifndef __attribute__
30/* This feature is available in gcc versions 2.5 and later. */
31# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)
32# define __attribute__(Spec) /* empty */
33# endif
34/* The attribute __pure__ was added in gcc 2.96. */
35# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
36# define __pure__ /* empty */
37# endif
38#endif
39
40
41/* The definition of GL_LINK_WARNING is copied here. */
42/* GL_LINK_WARNING("literal string") arranges to emit the literal string as
43 a linker warning on most glibc systems.
44 We use a linker warning rather than a preprocessor warning, because
45 #warning cannot be used inside macros. */
46#ifndef GL_LINK_WARNING
47 /* This works on platforms with GNU ld and ELF object format.
48 Testing __GLIBC__ is sufficient for asserting that GNU ld is in use.
49 Testing __ELF__ guarantees the ELF object format.
50 Testing __GNUC__ is necessary for the compound expression syntax. */
51# if defined __GLIBC__ && defined __ELF__ && defined __GNUC__
52# define GL_LINK_WARNING(message) \
53 GL_LINK_WARNING1 (__FILE__, __LINE__, message)
54# define GL_LINK_WARNING1(file, line, message) \
55 GL_LINK_WARNING2 (file, line, message) /* macroexpand file and line */
56# define GL_LINK_WARNING2(file, line, message) \
57 GL_LINK_WARNING3 (file ":" #line ": warning: " message)
58# define GL_LINK_WARNING3(message) \
59 ({ static const char warning[sizeof (message)] \
60 __attribute__ ((__unused__, \
61 __section__ (".gnu.warning"), \
62 __aligned__ (1))) \
63 = message "\n"; \
64 (void)0; \
65 })
66# else
67# define GL_LINK_WARNING(message) ((void) 0)
68# endif
69#endif
70
71
72#ifdef __cplusplus
73extern "C" {
74#endif
75
76
77/* Return the first occurrence of NEEDLE in HAYSTACK. */
78#if 0
79# if 0
80# define memmem rpl_memmem
81# endif
82# if ! 1 || 0
83extern void *memmem (void const *__haystack, size_t __haystack_len,
84 void const *__needle, size_t __needle_len)
85 __attribute__ ((__pure__));
86# endif
87#elif defined GNULIB_POSIXCHECK
88# undef memmem
89# define memmem(a,al,b,bl) \
90 (GL_LINK_WARNING ("memmem is unportable and often quadratic - " \
91 "use gnulib module memmem-simple for portability, " \
92 "and module memmem for speed" ), \
93 memmem (a, al, b, bl))
94#endif
95
96/* Copy N bytes of SRC to DEST, return pointer to bytes after the
97 last written byte. */
98#if 0
99# if ! 1
100extern void *mempcpy (void *restrict __dest, void const *restrict __src,
101 size_t __n);
102# endif
103#elif defined GNULIB_POSIXCHECK
104# undef mempcpy
105# define mempcpy(a,b,n) \
106 (GL_LINK_WARNING ("mempcpy is unportable - " \
107 "use gnulib module mempcpy for portability"), \
108 mempcpy (a, b, n))
109#endif
110
111/* Search backwards through a block for a byte (specified as an int). */
112#if 0
113# if ! 1
114extern void *memrchr (void const *, int, size_t)
115 __attribute__ ((__pure__));
116# endif
117#elif defined GNULIB_POSIXCHECK
118# undef memrchr
119# define memrchr(a,b,c) \
120 (GL_LINK_WARNING ("memrchr is unportable - " \
121 "use gnulib module memrchr for portability"), \
122 memrchr (a, b, c))
123#endif
124
125/* Copy SRC to DST, returning the address of the terminating '\0' in DST. */
126#if 0
127# if ! 1
128extern char *stpcpy (char *restrict __dst, char const *restrict __src);
129# endif
130#elif defined GNULIB_POSIXCHECK
131# undef stpcpy
132# define stpcpy(a,b) \
133 (GL_LINK_WARNING ("stpcpy is unportable - " \
134 "use gnulib module stpcpy for portability"), \
135 stpcpy (a, b))
136#endif
137
138/* Copy no more than N bytes of SRC to DST, returning a pointer past the
139 last non-NUL byte written into DST. */
140#if 0
141# if ! 1
142# define stpncpy gnu_stpncpy
143extern char *stpncpy (char *restrict __dst, char const *restrict __src,
144 size_t __n);
145# endif
146#elif defined GNULIB_POSIXCHECK
147# undef stpncpy
148# define stpncpy(a,b,n) \
149 (GL_LINK_WARNING ("stpncpy is unportable - " \
150 "use gnulib module stpncpy for portability"), \
151 stpncpy (a, b, n))
152#endif
153
154#if defined GNULIB_POSIXCHECK
155/* strchr() does not work with multibyte strings if the locale encoding is
156 GB18030 and the character to be searched is a digit. */
157# undef strchr
158# define strchr(s,c) \
159 (GL_LINK_WARNING ("strchr cannot work correctly on character strings " \
160 "in some multibyte locales - " \
161 "use mbschr if you care about internationalization"), \
162 strchr (s, c))
163#endif
164
165/* Find the first occurrence of C in S or the final NUL byte. */
166#if 0
167# if ! 1
168extern char *strchrnul (char const *__s, int __c_in)
169 __attribute__ ((__pure__));
170# endif
171#elif defined GNULIB_POSIXCHECK
172# undef strchrnul
173# define strchrnul(a,b) \
174 (GL_LINK_WARNING ("strchrnul is unportable - " \
175 "use gnulib module strchrnul for portability"), \
176 strchrnul (a, b))
177#endif
178
179/* Duplicate S, returning an identical malloc'd string. */
180#if 1
181# if ! 1 && ! defined strdup
182extern char *strdup (char const *__s);
183# endif
184#elif defined GNULIB_POSIXCHECK
185# undef strdup
186# define strdup(a) \
187 (GL_LINK_WARNING ("strdup is unportable - " \
188 "use gnulib module strdup for portability"), \
189 strdup (a))
190#endif
191
192/* Return a newly allocated copy of at most N bytes of STRING. */
193#if 1
194# if ! 1
195# undef strndup
196# define strndup rpl_strndup
197# endif
198# if ! 1 || ! 1
199extern char *strndup (char const *__string, size_t __n);
200# endif
201#elif defined GNULIB_POSIXCHECK
202# undef strndup
203# define strndup(a,n) \
204 (GL_LINK_WARNING ("strndup is unportable - " \
205 "use gnulib module strndup for portability"), \
206 strndup (a, n))
207#endif
208
209/* Find the length (number of bytes) of STRING, but scan at most
210 MAXLEN bytes. If no '\0' terminator is found in that many bytes,
211 return MAXLEN. */
212#if 1
213# if ! 1
214extern size_t strnlen (char const *__string, size_t __maxlen)
215 __attribute__ ((__pure__));
216# endif
217#elif defined GNULIB_POSIXCHECK
218# undef strnlen
219# define strnlen(a,n) \
220 (GL_LINK_WARNING ("strnlen is unportable - " \
221 "use gnulib module strnlen for portability"), \
222 strnlen (a, n))
223#endif
224
225#if defined GNULIB_POSIXCHECK
226/* strcspn() assumes the second argument is a list of single-byte characters.
227 Even in this simple case, it does not work with multibyte strings if the
228 locale encoding is GB18030 and one of the characters to be searched is a
229 digit. */
230# undef strcspn
231# define strcspn(s,a) \
232 (GL_LINK_WARNING ("strcspn cannot work correctly on character strings " \
233 "in multibyte locales - " \
234 "use mbscspn if you care about internationalization"), \
235 strcspn (s, a))
236#endif
237
238/* Find the first occurrence in S of any character in ACCEPT. */
239#if 0
240# if ! 1
241extern char *strpbrk (char const *__s, char const *__accept)
242 __attribute__ ((__pure__));
243# endif
244# if defined GNULIB_POSIXCHECK
245/* strpbrk() assumes the second argument is a list of single-byte characters.
246 Even in this simple case, it does not work with multibyte strings if the
247 locale encoding is GB18030 and one of the characters to be searched is a
248 digit. */
249# undef strpbrk
250# define strpbrk(s,a) \
251 (GL_LINK_WARNING ("strpbrk cannot work correctly on character strings " \
252 "in multibyte locales - " \
253 "use mbspbrk if you care about internationalization"), \
254 strpbrk (s, a))
255# endif
256#elif defined GNULIB_POSIXCHECK
257# undef strpbrk
258# define strpbrk(s,a) \
259 (GL_LINK_WARNING ("strpbrk is unportable - " \
260 "use gnulib module strpbrk for portability"), \
261 strpbrk (s, a))
262#endif
263
264#if defined GNULIB_POSIXCHECK
265/* strspn() assumes the second argument is a list of single-byte characters.
266 Even in this simple case, it cannot work with multibyte strings. */
267# undef strspn
268# define strspn(s,a) \
269 (GL_LINK_WARNING ("strspn cannot work correctly on character strings " \
270 "in multibyte locales - " \
271 "use mbsspn if you care about internationalization"), \
272 strspn (s, a))
273#endif
274
275#if defined GNULIB_POSIXCHECK
276/* strrchr() does not work with multibyte strings if the locale encoding is
277 GB18030 and the character to be searched is a digit. */
278# undef strrchr
279# define strrchr(s,c) \
280 (GL_LINK_WARNING ("strrchr cannot work correctly on character strings " \
281 "in some multibyte locales - " \
282 "use mbsrchr if you care about internationalization"), \
283 strrchr (s, c))
284#endif
285
286/* Search the next delimiter (char listed in DELIM) starting at *STRINGP.
287 If one is found, overwrite it with a NUL, and advance *STRINGP
288 to point to the next char after it. Otherwise, set *STRINGP to NULL.
289 If *STRINGP was already NULL, nothing happens.
290 Return the old value of *STRINGP.
291
292 This is a variant of strtok() that is multithread-safe and supports
293 empty fields.
294
295 Caveat: It modifies the original string.
296 Caveat: These functions cannot be used on constant strings.
297 Caveat: The identity of the delimiting character is lost.
298 Caveat: It doesn't work with multibyte strings unless all of the delimiter
299 characters are ASCII characters < 0x30.
300
301 See also strtok_r(). */
302#if 0
303# if ! 1
304extern char *strsep (char **restrict __stringp, char const *restrict __delim);
305# endif
306# if defined GNULIB_POSIXCHECK
307# undef strsep
308# define strsep(s,d) \
309 (GL_LINK_WARNING ("strsep cannot work correctly on character strings " \
310 "in multibyte locales - " \
311 "use mbssep if you care about internationalization"), \
312 strsep (s, d))
313# endif
314#elif defined GNULIB_POSIXCHECK
315# undef strsep
316# define strsep(s,d) \
317 (GL_LINK_WARNING ("strsep is unportable - " \
318 "use gnulib module strsep for portability"), \
319 strsep (s, d))
320#endif
321
322#if 0
323# if 0
324# define strstr rpl_strstr
325char *strstr (const char *haystack, const char *needle)
326 __attribute__ ((__pure__));
327# endif
328#elif defined GNULIB_POSIXCHECK
329/* strstr() does not work with multibyte strings if the locale encoding is
330 different from UTF-8:
331 POSIX says that it operates on "strings", and "string" in POSIX is defined
332 as a sequence of bytes, not of characters. */
333# undef strstr
334# define strstr(a,b) \
335 (GL_LINK_WARNING ("strstr is quadratic on many systems, and cannot " \
336 "work correctly on character strings in most " \
337 "multibyte locales - " \
338 "use mbsstr if you care about internationalization, " \
339 "or use strstr if you care about speed"), \
340 strstr (a, b))
341#endif
342
343/* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive
344 comparison. */
345#if 0
346# if 0
347# define strcasestr rpl_strcasestr
348# endif
349# if ! 1 || 0
350extern char *strcasestr (const char *haystack, const char *needle)
351 __attribute__ ((__pure__));
352# endif
353#elif defined GNULIB_POSIXCHECK
354/* strcasestr() does not work with multibyte strings:
355 It is a glibc extension, and glibc implements it only for unibyte
356 locales. */
357# undef strcasestr
358# define strcasestr(a,b) \
359 (GL_LINK_WARNING ("strcasestr does work correctly on character strings " \
360 "in multibyte locales - " \
361 "use mbscasestr if you care about " \
362 "internationalization, or use c-strcasestr if you want " \
363 "a locale independent function"), \
364 strcasestr (a, b))
365#endif
366
367/* Parse S into tokens separated by characters in DELIM.
368 If S is NULL, the saved pointer in SAVE_PTR is used as
369 the next starting point. For example:
370 char s[] = "-abc-=-def";
371 char *sp;
372 x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def"
373 x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL
374 x = strtok_r(NULL, "=", &sp); // x = NULL
375 // s = "abc\0-def\0"
376
377 This is a variant of strtok() that is multithread-safe.
378
379 For the POSIX documentation for this function, see:
380 http://www.opengroup.org/susv3xsh/strtok.html
381
382 Caveat: It modifies the original string.
383 Caveat: These functions cannot be used on constant strings.
384 Caveat: The identity of the delimiting character is lost.
385 Caveat: It doesn't work with multibyte strings unless all of the delimiter
386 characters are ASCII characters < 0x30.
387
388 See also strsep(). */
389#if 0
390# if ! 1
391extern char *strtok_r (char *restrict s, char const *restrict delim,
392 char **restrict save_ptr);
393# endif
394# if defined GNULIB_POSIXCHECK
395# undef strtok_r
396# define strtok_r(s,d,p) \
397 (GL_LINK_WARNING ("strtok_r cannot work correctly on character strings " \
398 "in multibyte locales - " \
399 "use mbstok_r if you care about internationalization"), \
400 strtok_r (s, d, p))
401# endif
402#elif defined GNULIB_POSIXCHECK
403# undef strtok_r
404# define strtok_r(s,d,p) \
405 (GL_LINK_WARNING ("strtok_r is unportable - " \
406 "use gnulib module strtok_r for portability"), \
407 strtok_r (s, d, p))
408#endif
409
410
411/* The following functions are not specified by POSIX. They are gnulib
412 extensions. */
413
414#if 0
415/* Return the number of multibyte characters in the character string STRING.
416 This considers multibyte characters, unlike strlen, which counts bytes. */
417extern size_t mbslen (const char *string);
418#endif
419
420#if 0
421/* Return the number of multibyte characters in the character string starting
422 at STRING and ending at STRING + LEN. */
423extern size_t mbsnlen (const char *string, size_t len);
424#endif
425
426#if 0
427/* Locate the first single-byte character C in the character string STRING,
428 and return a pointer to it. Return NULL if C is not found in STRING.
429 Unlike strchr(), this function works correctly in multibyte locales with
430 encodings such as GB18030. */
431# define mbschr rpl_mbschr /* avoid collision with HP-UX function */
432extern char * mbschr (const char *string, int c);
433#endif
434
435#if 0
436/* Locate the last single-byte character C in the character string STRING,
437 and return a pointer to it. Return NULL if C is not found in STRING.
438 Unlike strrchr(), this function works correctly in multibyte locales with
439 encodings such as GB18030. */
440# define mbsrchr rpl_mbsrchr /* avoid collision with HP-UX function */
441extern char * mbsrchr (const char *string, int c);
442#endif
443
444#if 0
445/* Find the first occurrence of the character string NEEDLE in the character
446 string HAYSTACK. Return NULL if NEEDLE is not found in HAYSTACK.
447 Unlike strstr(), this function works correctly in multibyte locales with
448 encodings different from UTF-8. */
449extern char * mbsstr (const char *haystack, const char *needle);
450#endif
451
452#if 0
453/* Compare the character strings S1 and S2, ignoring case, returning less than,
454 equal to or greater than zero if S1 is lexicographically less than, equal to
455 or greater than S2.
456 Note: This function may, in multibyte locales, return 0 for strings of
457 different lengths!
458 Unlike strcasecmp(), this function works correctly in multibyte locales. */
459extern int mbscasecmp (const char *s1, const char *s2);
460#endif
461
462#if 0
463/* Compare the initial segment of the character string S1 consisting of at most
464 N characters with the initial segment of the character string S2 consisting
465 of at most N characters, ignoring case, returning less than, equal to or
466 greater than zero if the initial segment of S1 is lexicographically less
467 than, equal to or greater than the initial segment of S2.
468 Note: This function may, in multibyte locales, return 0 for initial segments
469 of different lengths!
470 Unlike strncasecmp(), this function works correctly in multibyte locales.
471 But beware that N is not a byte count but a character count! */
472extern int mbsncasecmp (const char *s1, const char *s2, size_t n);
473#endif
474
475#if 0
476/* Compare the initial segment of the character string STRING consisting of
477 at most mbslen (PREFIX) characters with the character string PREFIX,
478 ignoring case, returning less than, equal to or greater than zero if this
479 initial segment is lexicographically less than, equal to or greater than
480 PREFIX.
481 Note: This function may, in multibyte locales, return 0 if STRING is of
482 smaller length than PREFIX!
483 Unlike strncasecmp(), this function works correctly in multibyte
484 locales. */
485extern char * mbspcasecmp (const char *string, const char *prefix);
486#endif
487
488#if 0
489/* Find the first occurrence of the character string NEEDLE in the character
490 string HAYSTACK, using case-insensitive comparison.
491 Note: This function may, in multibyte locales, return success even if
492 strlen (haystack) < strlen (needle) !
493 Unlike strcasestr(), this function works correctly in multibyte locales. */
494extern char * mbscasestr (const char *haystack, const char *needle);
495#endif
496
497#if 0
498/* Find the first occurrence in the character string STRING of any character
499 in the character string ACCEPT. Return the number of bytes from the
500 beginning of the string to this occurrence, or to the end of the string
501 if none exists.
502 Unlike strcspn(), this function works correctly in multibyte locales. */
503extern size_t mbscspn (const char *string, const char *accept);
504#endif
505
506#if 0
507/* Find the first occurrence in the character string STRING of any character
508 in the character string ACCEPT. Return the pointer to it, or NULL if none
509 exists.
510 Unlike strpbrk(), this function works correctly in multibyte locales. */
511# define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */
512extern char * mbspbrk (const char *string, const char *accept);
513#endif
514
515#if 0
516/* Find the first occurrence in the character string STRING of any character
517 not in the character string REJECT. Return the number of bytes from the
518 beginning of the string to this occurrence, or to the end of the string
519 if none exists.
520 Unlike strspn(), this function works correctly in multibyte locales. */
521extern size_t mbsspn (const char *string, const char *reject);
522#endif
523
524#if 0
525/* Search the next delimiter (multibyte character listed in the character
526 string DELIM) starting at the character string *STRINGP.
527 If one is found, overwrite it with a NUL, and advance *STRINGP to point
528 to the next multibyte character after it. Otherwise, set *STRINGP to NULL.
529 If *STRINGP was already NULL, nothing happens.
530 Return the old value of *STRINGP.
531
532 This is a variant of mbstok_r() that supports empty fields.
533
534 Caveat: It modifies the original string.
535 Caveat: These functions cannot be used on constant strings.
536 Caveat: The identity of the delimiting character is lost.
537
538 See also mbstok_r(). */
539extern char * mbssep (char **stringp, const char *delim);
540#endif
541
542#if 0
543/* Parse the character string STRING into tokens separated by characters in
544 the character string DELIM.
545 If STRING is NULL, the saved pointer in SAVE_PTR is used as
546 the next starting point. For example:
547 char s[] = "-abc-=-def";
548 char *sp;
549 x = mbstok_r(s, "-", &sp); // x = "abc", sp = "=-def"
550 x = mbstok_r(NULL, "-=", &sp); // x = "def", sp = NULL
551 x = mbstok_r(NULL, "=", &sp); // x = NULL
552 // s = "abc\0-def\0"
553
554 Caveat: It modifies the original string.
555 Caveat: These functions cannot be used on constant strings.
556 Caveat: The identity of the delimiting character is lost.
557
558 See also mbssep(). */
559extern char * mbstok_r (char *string, const char *delim, char **save_ptr);
560#endif
561
562/* Map any int, typically from errno, into an error message. */
563#if 1
564# if 0
565# undef strerror
566# define strerror rpl_strerror
567extern char *strerror (int);
568# endif
569#elif defined GNULIB_POSIXCHECK
570# undef strerror
571# define strerror(e) \
572 (GL_LINK_WARNING ("strerror is unportable - " \
573 "use gnulib module strerror to guarantee non-NULL result"), \
574 strerror (e))
575#endif
576
577#if 0
578# if 0
579# define strsignal rpl_strsignal
580# endif
581# if ! 1 || 0
582extern char *strsignal (int __sig);
583# endif
584#elif defined GNULIB_POSIXCHECK
585# undef strsignal
586# define strsignal(a) \
587 (GL_LINK_WARNING ("strsignal is unportable - " \
588 "use gnulib module strsignal for portability"), \
589 strsignal (a))
590#endif
591
592
593#ifdef __cplusplus
594}
595#endif
596
597#endif /* _GL_STRING_H */
598#endif /* _GL_STRING_H */