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f6ea5628 DJ |
1 | /* A GNU-like <string.h>. |
2 | ||
db026a31 | 3 | Copyright (C) 1995-1996, 2001-2010 Free Software Foundation, Inc. |
f6ea5628 DJ |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
4c38e0a4 | 7 | the Free Software Foundation; either version 3, or (at your option) |
f6ea5628 DJ |
8 | any later version. |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software Foundation, | |
17 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ | |
18 | ||
19 | #ifndef _GL_STRING_H | |
20 | ||
f434ba03 PA |
21 | #if __GNUC__ >= 3 |
22 | @PRAGMA_SYSTEM_HEADER@ | |
23 | #endif | |
24 | ||
f6ea5628 DJ |
25 | /* The include_next requires a split double-inclusion guard. */ |
26 | #@INCLUDE_NEXT@ @NEXT_STRING_H@ | |
27 | ||
28 | #ifndef _GL_STRING_H | |
29 | #define _GL_STRING_H | |
30 | ||
f434ba03 PA |
31 | /* NetBSD 5.0 mis-defines NULL. */ |
32 | #include <stddef.h> | |
33 | ||
34 | /* MirBSD defines mbslen as a macro. */ | |
35 | #if @GNULIB_MBSLEN@ && defined __MirBSD__ | |
36 | # include <wchar.h> | |
37 | #endif | |
f6ea5628 DJ |
38 | |
39 | #ifndef __attribute__ | |
40 | /* This feature is available in gcc versions 2.5 and later. */ | |
41 | # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) | |
42 | # define __attribute__(Spec) /* empty */ | |
43 | # endif | |
44 | /* The attribute __pure__ was added in gcc 2.96. */ | |
45 | # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 96) | |
46 | # define __pure__ /* empty */ | |
47 | # endif | |
48 | #endif | |
49 | ||
50 | ||
f434ba03 PA |
51 | /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */ |
52 | ||
53 | /* The definition of _GL_ARG_NONNULL is copied here. */ | |
54 | ||
55 | /* The definition of _GL_WARN_ON_USE is copied here. */ | |
56 | ||
57 | ||
58 | /* Return the first instance of C within N bytes of S, or NULL. */ | |
59 | #if @GNULIB_MEMCHR@ | |
60 | # if @REPLACE_MEMCHR@ | |
61 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
62 | # define memchr rpl_memchr | |
63 | # endif | |
64 | _GL_FUNCDECL_RPL (memchr, void *, (void const *__s, int __c, size_t __n) | |
65 | __attribute__ ((__pure__)) | |
66 | _GL_ARG_NONNULL ((1))); | |
67 | _GL_CXXALIAS_RPL (memchr, void *, (void const *__s, int __c, size_t __n)); | |
68 | # else | |
69 | # if ! @HAVE_MEMCHR@ | |
70 | _GL_FUNCDECL_SYS (memchr, void *, (void const *__s, int __c, size_t __n) | |
71 | __attribute__ ((__pure__)) | |
72 | _GL_ARG_NONNULL ((1))); | |
73 | # endif | |
74 | /* On some systems, this function is defined as an overloaded function: | |
75 | extern "C" { const void * std::memchr (const void *, int, size_t); } | |
76 | extern "C++" { void * std::memchr (void *, int, size_t); } */ | |
77 | _GL_CXXALIAS_SYS_CAST2 (memchr, | |
78 | void *, (void const *__s, int __c, size_t __n), | |
79 | void const *, (void const *__s, int __c, size_t __n)); | |
80 | # endif | |
81 | # if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \ | |
82 | && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) | |
83 | _GL_CXXALIASWARN1 (memchr, void *, (void *__s, int __c, size_t __n)); | |
84 | _GL_CXXALIASWARN1 (memchr, void const *, | |
85 | (void const *__s, int __c, size_t __n)); | |
86 | # else | |
87 | _GL_CXXALIASWARN (memchr); | |
88 | # endif | |
89 | #elif defined GNULIB_POSIXCHECK | |
90 | # undef memchr | |
91 | /* Assume memchr is always declared. */ | |
92 | _GL_WARN_ON_USE (memchr, "memchr has platform-specific bugs - " | |
93 | "use gnulib module memchr for portability" ); | |
f6ea5628 DJ |
94 | #endif |
95 | ||
f6ea5628 DJ |
96 | /* Return the first occurrence of NEEDLE in HAYSTACK. */ |
97 | #if @GNULIB_MEMMEM@ | |
98 | # if @REPLACE_MEMMEM@ | |
f434ba03 PA |
99 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
100 | # define memmem rpl_memmem | |
101 | # endif | |
102 | _GL_FUNCDECL_RPL (memmem, void *, | |
103 | (void const *__haystack, size_t __haystack_len, | |
104 | void const *__needle, size_t __needle_len) | |
105 | __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 3))); | |
106 | _GL_CXXALIAS_RPL (memmem, void *, | |
107 | (void const *__haystack, size_t __haystack_len, | |
108 | void const *__needle, size_t __needle_len)); | |
109 | # else | |
110 | # if ! @HAVE_DECL_MEMMEM@ | |
111 | _GL_FUNCDECL_SYS (memmem, void *, | |
112 | (void const *__haystack, size_t __haystack_len, | |
113 | void const *__needle, size_t __needle_len) | |
114 | __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 3))); | |
115 | # endif | |
116 | _GL_CXXALIAS_SYS (memmem, void *, | |
117 | (void const *__haystack, size_t __haystack_len, | |
118 | void const *__needle, size_t __needle_len)); | |
f6ea5628 | 119 | # endif |
f434ba03 | 120 | _GL_CXXALIASWARN (memmem); |
f6ea5628 DJ |
121 | #elif defined GNULIB_POSIXCHECK |
122 | # undef memmem | |
f434ba03 PA |
123 | # if HAVE_RAW_DECL_MEMMEM |
124 | _GL_WARN_ON_USE (memmem, "memmem is unportable and often quadratic - " | |
125 | "use gnulib module memmem-simple for portability, " | |
126 | "and module memmem for speed" ); | |
127 | # endif | |
f6ea5628 DJ |
128 | #endif |
129 | ||
130 | /* Copy N bytes of SRC to DEST, return pointer to bytes after the | |
131 | last written byte. */ | |
132 | #if @GNULIB_MEMPCPY@ | |
133 | # if ! @HAVE_MEMPCPY@ | |
f434ba03 PA |
134 | _GL_FUNCDECL_SYS (mempcpy, void *, |
135 | (void *restrict __dest, void const *restrict __src, | |
136 | size_t __n) | |
137 | _GL_ARG_NONNULL ((1, 2))); | |
f6ea5628 | 138 | # endif |
f434ba03 PA |
139 | _GL_CXXALIAS_SYS (mempcpy, void *, |
140 | (void *restrict __dest, void const *restrict __src, | |
141 | size_t __n)); | |
142 | _GL_CXXALIASWARN (mempcpy); | |
f6ea5628 DJ |
143 | #elif defined GNULIB_POSIXCHECK |
144 | # undef mempcpy | |
f434ba03 PA |
145 | # if HAVE_RAW_DECL_MEMPCPY |
146 | _GL_WARN_ON_USE (mempcpy, "mempcpy is unportable - " | |
147 | "use gnulib module mempcpy for portability"); | |
148 | # endif | |
f6ea5628 DJ |
149 | #endif |
150 | ||
151 | /* Search backwards through a block for a byte (specified as an int). */ | |
152 | #if @GNULIB_MEMRCHR@ | |
153 | # if ! @HAVE_DECL_MEMRCHR@ | |
f434ba03 PA |
154 | _GL_FUNCDECL_SYS (memrchr, void *, (void const *, int, size_t) |
155 | __attribute__ ((__pure__)) | |
156 | _GL_ARG_NONNULL ((1))); | |
157 | # endif | |
158 | /* On some systems, this function is defined as an overloaded function: | |
159 | extern "C++" { const void * std::memrchr (const void *, int, size_t); } | |
160 | extern "C++" { void * std::memrchr (void *, int, size_t); } */ | |
161 | _GL_CXXALIAS_SYS_CAST2 (memrchr, | |
162 | void *, (void const *, int, size_t), | |
163 | void const *, (void const *, int, size_t)); | |
164 | # if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \ | |
165 | && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) | |
166 | _GL_CXXALIASWARN1 (memrchr, void *, (void *, int, size_t)); | |
167 | _GL_CXXALIASWARN1 (memrchr, void const *, (void const *, int, size_t)); | |
168 | # else | |
169 | _GL_CXXALIASWARN (memrchr); | |
f6ea5628 DJ |
170 | # endif |
171 | #elif defined GNULIB_POSIXCHECK | |
172 | # undef memrchr | |
f434ba03 PA |
173 | # if HAVE_RAW_DECL_MEMRCHR |
174 | _GL_WARN_ON_USE (memrchr, "memrchr is unportable - " | |
175 | "use gnulib module memrchr for portability"); | |
176 | # endif | |
177 | #endif | |
178 | ||
179 | /* Find the first occurrence of C in S. More efficient than | |
180 | memchr(S,C,N), at the expense of undefined behavior if C does not | |
181 | occur within N bytes. */ | |
182 | #if @GNULIB_RAWMEMCHR@ | |
183 | # if ! @HAVE_RAWMEMCHR@ | |
184 | _GL_FUNCDECL_SYS (rawmemchr, void *, (void const *__s, int __c_in) | |
185 | __attribute__ ((__pure__)) | |
186 | _GL_ARG_NONNULL ((1))); | |
187 | # endif | |
188 | /* On some systems, this function is defined as an overloaded function: | |
189 | extern "C++" { const void * std::rawmemchr (const void *, int); } | |
190 | extern "C++" { void * std::rawmemchr (void *, int); } */ | |
191 | _GL_CXXALIAS_SYS_CAST2 (rawmemchr, | |
192 | void *, (void const *__s, int __c_in), | |
193 | void const *, (void const *__s, int __c_in)); | |
194 | # if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \ | |
195 | && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) | |
196 | _GL_CXXALIASWARN1 (rawmemchr, void *, (void *__s, int __c_in)); | |
197 | _GL_CXXALIASWARN1 (rawmemchr, void const *, (void const *__s, int __c_in)); | |
198 | # else | |
199 | _GL_CXXALIASWARN (rawmemchr); | |
200 | # endif | |
201 | #elif defined GNULIB_POSIXCHECK | |
202 | # undef rawmemchr | |
203 | # if HAVE_RAW_DECL_RAWMEMCHR | |
204 | _GL_WARN_ON_USE (rawmemchr, "rawmemchr is unportable - " | |
205 | "use gnulib module rawmemchr for portability"); | |
206 | # endif | |
f6ea5628 DJ |
207 | #endif |
208 | ||
209 | /* Copy SRC to DST, returning the address of the terminating '\0' in DST. */ | |
210 | #if @GNULIB_STPCPY@ | |
211 | # if ! @HAVE_STPCPY@ | |
f434ba03 PA |
212 | _GL_FUNCDECL_SYS (stpcpy, char *, |
213 | (char *restrict __dst, char const *restrict __src) | |
214 | _GL_ARG_NONNULL ((1, 2))); | |
f6ea5628 | 215 | # endif |
f434ba03 PA |
216 | _GL_CXXALIAS_SYS (stpcpy, char *, |
217 | (char *restrict __dst, char const *restrict __src)); | |
218 | _GL_CXXALIASWARN (stpcpy); | |
f6ea5628 DJ |
219 | #elif defined GNULIB_POSIXCHECK |
220 | # undef stpcpy | |
f434ba03 PA |
221 | # if HAVE_RAW_DECL_STPCPY |
222 | _GL_WARN_ON_USE (stpcpy, "stpcpy is unportable - " | |
223 | "use gnulib module stpcpy for portability"); | |
224 | # endif | |
f6ea5628 DJ |
225 | #endif |
226 | ||
227 | /* Copy no more than N bytes of SRC to DST, returning a pointer past the | |
228 | last non-NUL byte written into DST. */ | |
229 | #if @GNULIB_STPNCPY@ | |
f434ba03 PA |
230 | # if @REPLACE_STPNCPY@ |
231 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
232 | # define stpncpy rpl_stpncpy | |
233 | # endif | |
234 | _GL_FUNCDECL_RPL (stpncpy, char *, | |
235 | (char *restrict __dst, char const *restrict __src, | |
236 | size_t __n) | |
237 | _GL_ARG_NONNULL ((1, 2))); | |
238 | _GL_CXXALIAS_RPL (stpncpy, char *, | |
239 | (char *restrict __dst, char const *restrict __src, | |
240 | size_t __n)); | |
241 | # else | |
242 | # if ! @HAVE_STPNCPY@ | |
243 | _GL_FUNCDECL_SYS (stpncpy, char *, | |
244 | (char *restrict __dst, char const *restrict __src, | |
245 | size_t __n) | |
246 | _GL_ARG_NONNULL ((1, 2))); | |
247 | # endif | |
248 | _GL_CXXALIAS_SYS (stpncpy, char *, | |
249 | (char *restrict __dst, char const *restrict __src, | |
250 | size_t __n)); | |
f6ea5628 | 251 | # endif |
f434ba03 | 252 | _GL_CXXALIASWARN (stpncpy); |
f6ea5628 DJ |
253 | #elif defined GNULIB_POSIXCHECK |
254 | # undef stpncpy | |
f434ba03 PA |
255 | # if HAVE_RAW_DECL_STPNCPY |
256 | _GL_WARN_ON_USE (stpncpy, "stpncpy is unportable - " | |
257 | "use gnulib module stpncpy for portability"); | |
258 | # endif | |
f6ea5628 DJ |
259 | #endif |
260 | ||
261 | #if defined GNULIB_POSIXCHECK | |
262 | /* strchr() does not work with multibyte strings if the locale encoding is | |
263 | GB18030 and the character to be searched is a digit. */ | |
264 | # undef strchr | |
f434ba03 PA |
265 | /* Assume strchr is always declared. */ |
266 | _GL_WARN_ON_USE (strchr, "strchr cannot work correctly on character strings " | |
267 | "in some multibyte locales - " | |
268 | "use mbschr if you care about internationalization"); | |
f6ea5628 DJ |
269 | #endif |
270 | ||
271 | /* Find the first occurrence of C in S or the final NUL byte. */ | |
272 | #if @GNULIB_STRCHRNUL@ | |
273 | # if ! @HAVE_STRCHRNUL@ | |
f434ba03 PA |
274 | _GL_FUNCDECL_SYS (strchrnul, char *, (char const *__s, int __c_in) |
275 | __attribute__ ((__pure__)) | |
276 | _GL_ARG_NONNULL ((1))); | |
277 | # endif | |
278 | /* On some systems, this function is defined as an overloaded function: | |
279 | extern "C++" { const char * std::strchrnul (const char *, int); } | |
280 | extern "C++" { char * std::strchrnul (char *, int); } */ | |
281 | _GL_CXXALIAS_SYS_CAST2 (strchrnul, | |
282 | char *, (char const *__s, int __c_in), | |
283 | char const *, (char const *__s, int __c_in)); | |
284 | # if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \ | |
285 | && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) | |
286 | _GL_CXXALIASWARN1 (strchrnul, char *, (char *__s, int __c_in)); | |
287 | _GL_CXXALIASWARN1 (strchrnul, char const *, (char const *__s, int __c_in)); | |
288 | # else | |
289 | _GL_CXXALIASWARN (strchrnul); | |
f6ea5628 DJ |
290 | # endif |
291 | #elif defined GNULIB_POSIXCHECK | |
292 | # undef strchrnul | |
f434ba03 PA |
293 | # if HAVE_RAW_DECL_STRCHRNUL |
294 | _GL_WARN_ON_USE (strchrnul, "strchrnul is unportable - " | |
295 | "use gnulib module strchrnul for portability"); | |
296 | # endif | |
f6ea5628 DJ |
297 | #endif |
298 | ||
299 | /* Duplicate S, returning an identical malloc'd string. */ | |
300 | #if @GNULIB_STRDUP@ | |
f434ba03 PA |
301 | # if @REPLACE_STRDUP@ |
302 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
303 | # undef strdup | |
304 | # define strdup rpl_strdup | |
305 | # endif | |
306 | _GL_FUNCDECL_RPL (strdup, char *, (char const *__s) _GL_ARG_NONNULL ((1))); | |
307 | _GL_CXXALIAS_RPL (strdup, char *, (char const *__s)); | |
308 | # else | |
309 | # if !(@HAVE_DECL_STRDUP@ || defined strdup) | |
310 | _GL_FUNCDECL_SYS (strdup, char *, (char const *__s) _GL_ARG_NONNULL ((1))); | |
311 | # endif | |
312 | _GL_CXXALIAS_SYS (strdup, char *, (char const *__s)); | |
f6ea5628 | 313 | # endif |
f434ba03 | 314 | _GL_CXXALIASWARN (strdup); |
f6ea5628 DJ |
315 | #elif defined GNULIB_POSIXCHECK |
316 | # undef strdup | |
f434ba03 PA |
317 | # if HAVE_RAW_DECL_STRDUP |
318 | _GL_WARN_ON_USE (strdup, "strdup is unportable - " | |
319 | "use gnulib module strdup for portability"); | |
320 | # endif | |
321 | #endif | |
322 | ||
323 | /* Append no more than N characters from SRC onto DEST. */ | |
324 | #if @GNULIB_STRNCAT@ | |
325 | # if @REPLACE_STRNCAT@ | |
326 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
327 | # undef strncat | |
328 | # define strncat rpl_strncat | |
329 | # endif | |
330 | _GL_FUNCDECL_RPL (strncat, char *, (char *dest, const char *src, size_t n) | |
331 | _GL_ARG_NONNULL ((1, 2))); | |
332 | _GL_CXXALIAS_RPL (strncat, char *, (char *dest, const char *src, size_t n)); | |
333 | # else | |
334 | _GL_CXXALIAS_SYS (strncat, char *, (char *dest, const char *src, size_t n)); | |
335 | # endif | |
336 | _GL_CXXALIASWARN (strncat); | |
337 | #elif defined GNULIB_POSIXCHECK | |
338 | # undef strncat | |
339 | # if HAVE_RAW_DECL_STRNCAT | |
340 | _GL_WARN_ON_USE (strncat, "strncat is unportable - " | |
341 | "use gnulib module strncat for portability"); | |
342 | # endif | |
f6ea5628 DJ |
343 | #endif |
344 | ||
345 | /* Return a newly allocated copy of at most N bytes of STRING. */ | |
346 | #if @GNULIB_STRNDUP@ | |
f434ba03 PA |
347 | # if @REPLACE_STRNDUP@ |
348 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
349 | # undef strndup | |
350 | # define strndup rpl_strndup | |
351 | # endif | |
352 | _GL_FUNCDECL_RPL (strndup, char *, (char const *__string, size_t __n) | |
353 | _GL_ARG_NONNULL ((1))); | |
354 | _GL_CXXALIAS_RPL (strndup, char *, (char const *__string, size_t __n)); | |
355 | # else | |
356 | # if ! @HAVE_DECL_STRNDUP@ | |
357 | _GL_FUNCDECL_SYS (strndup, char *, (char const *__string, size_t __n) | |
358 | _GL_ARG_NONNULL ((1))); | |
359 | # endif | |
360 | _GL_CXXALIAS_SYS (strndup, char *, (char const *__string, size_t __n)); | |
f6ea5628 | 361 | # endif |
f434ba03 | 362 | _GL_CXXALIASWARN (strndup); |
f6ea5628 DJ |
363 | #elif defined GNULIB_POSIXCHECK |
364 | # undef strndup | |
f434ba03 PA |
365 | # if HAVE_RAW_DECL_STRNDUP |
366 | _GL_WARN_ON_USE (strndup, "strndup is unportable - " | |
367 | "use gnulib module strndup for portability"); | |
368 | # endif | |
f6ea5628 DJ |
369 | #endif |
370 | ||
371 | /* Find the length (number of bytes) of STRING, but scan at most | |
372 | MAXLEN bytes. If no '\0' terminator is found in that many bytes, | |
373 | return MAXLEN. */ | |
374 | #if @GNULIB_STRNLEN@ | |
f434ba03 PA |
375 | # if @REPLACE_STRNLEN@ |
376 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
377 | # undef strnlen | |
378 | # define strnlen rpl_strnlen | |
379 | # endif | |
380 | _GL_FUNCDECL_RPL (strnlen, size_t, (char const *__string, size_t __maxlen) | |
381 | __attribute__ ((__pure__)) | |
382 | _GL_ARG_NONNULL ((1))); | |
383 | _GL_CXXALIAS_RPL (strnlen, size_t, (char const *__string, size_t __maxlen)); | |
384 | # else | |
385 | # if ! @HAVE_DECL_STRNLEN@ | |
386 | _GL_FUNCDECL_SYS (strnlen, size_t, (char const *__string, size_t __maxlen) | |
387 | __attribute__ ((__pure__)) | |
388 | _GL_ARG_NONNULL ((1))); | |
389 | # endif | |
390 | _GL_CXXALIAS_SYS (strnlen, size_t, (char const *__string, size_t __maxlen)); | |
f6ea5628 | 391 | # endif |
f434ba03 | 392 | _GL_CXXALIASWARN (strnlen); |
f6ea5628 DJ |
393 | #elif defined GNULIB_POSIXCHECK |
394 | # undef strnlen | |
f434ba03 PA |
395 | # if HAVE_RAW_DECL_STRNLEN |
396 | _GL_WARN_ON_USE (strnlen, "strnlen is unportable - " | |
397 | "use gnulib module strnlen for portability"); | |
398 | # endif | |
f6ea5628 DJ |
399 | #endif |
400 | ||
401 | #if defined GNULIB_POSIXCHECK | |
402 | /* strcspn() assumes the second argument is a list of single-byte characters. | |
403 | Even in this simple case, it does not work with multibyte strings if the | |
404 | locale encoding is GB18030 and one of the characters to be searched is a | |
405 | digit. */ | |
406 | # undef strcspn | |
f434ba03 PA |
407 | /* Assume strcspn is always declared. */ |
408 | _GL_WARN_ON_USE (strcspn, "strcspn cannot work correctly on character strings " | |
409 | "in multibyte locales - " | |
410 | "use mbscspn if you care about internationalization"); | |
f6ea5628 DJ |
411 | #endif |
412 | ||
413 | /* Find the first occurrence in S of any character in ACCEPT. */ | |
414 | #if @GNULIB_STRPBRK@ | |
415 | # if ! @HAVE_STRPBRK@ | |
f434ba03 PA |
416 | _GL_FUNCDECL_SYS (strpbrk, char *, (char const *__s, char const *__accept) |
417 | __attribute__ ((__pure__)) | |
418 | _GL_ARG_NONNULL ((1, 2))); | |
419 | # endif | |
420 | /* On some systems, this function is defined as an overloaded function: | |
421 | extern "C" { const char * strpbrk (const char *, const char *); } | |
422 | extern "C++" { char * strpbrk (char *, const char *); } */ | |
423 | _GL_CXXALIAS_SYS_CAST2 (strpbrk, | |
424 | char *, (char const *__s, char const *__accept), | |
425 | const char *, (char const *__s, char const *__accept)); | |
426 | # if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \ | |
427 | && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) | |
428 | _GL_CXXALIASWARN1 (strpbrk, char *, (char *__s, char const *__accept)); | |
429 | _GL_CXXALIASWARN1 (strpbrk, char const *, | |
430 | (char const *__s, char const *__accept)); | |
431 | # else | |
432 | _GL_CXXALIASWARN (strpbrk); | |
f6ea5628 DJ |
433 | # endif |
434 | # if defined GNULIB_POSIXCHECK | |
435 | /* strpbrk() assumes the second argument is a list of single-byte characters. | |
436 | Even in this simple case, it does not work with multibyte strings if the | |
437 | locale encoding is GB18030 and one of the characters to be searched is a | |
438 | digit. */ | |
439 | # undef strpbrk | |
f434ba03 PA |
440 | _GL_WARN_ON_USE (strpbrk, "strpbrk cannot work correctly on character strings " |
441 | "in multibyte locales - " | |
442 | "use mbspbrk if you care about internationalization"); | |
f6ea5628 DJ |
443 | # endif |
444 | #elif defined GNULIB_POSIXCHECK | |
445 | # undef strpbrk | |
f434ba03 PA |
446 | # if HAVE_RAW_DECL_STRPBRK |
447 | _GL_WARN_ON_USE (strpbrk, "strpbrk is unportable - " | |
448 | "use gnulib module strpbrk for portability"); | |
449 | # endif | |
f6ea5628 DJ |
450 | #endif |
451 | ||
452 | #if defined GNULIB_POSIXCHECK | |
453 | /* strspn() assumes the second argument is a list of single-byte characters. | |
454 | Even in this simple case, it cannot work with multibyte strings. */ | |
455 | # undef strspn | |
f434ba03 PA |
456 | /* Assume strspn is always declared. */ |
457 | _GL_WARN_ON_USE (strspn, "strspn cannot work correctly on character strings " | |
458 | "in multibyte locales - " | |
459 | "use mbsspn if you care about internationalization"); | |
f6ea5628 DJ |
460 | #endif |
461 | ||
462 | #if defined GNULIB_POSIXCHECK | |
463 | /* strrchr() does not work with multibyte strings if the locale encoding is | |
464 | GB18030 and the character to be searched is a digit. */ | |
465 | # undef strrchr | |
f434ba03 PA |
466 | /* Assume strrchr is always declared. */ |
467 | _GL_WARN_ON_USE (strrchr, "strrchr cannot work correctly on character strings " | |
468 | "in some multibyte locales - " | |
469 | "use mbsrchr if you care about internationalization"); | |
f6ea5628 DJ |
470 | #endif |
471 | ||
472 | /* Search the next delimiter (char listed in DELIM) starting at *STRINGP. | |
473 | If one is found, overwrite it with a NUL, and advance *STRINGP | |
474 | to point to the next char after it. Otherwise, set *STRINGP to NULL. | |
475 | If *STRINGP was already NULL, nothing happens. | |
476 | Return the old value of *STRINGP. | |
477 | ||
478 | This is a variant of strtok() that is multithread-safe and supports | |
479 | empty fields. | |
480 | ||
481 | Caveat: It modifies the original string. | |
482 | Caveat: These functions cannot be used on constant strings. | |
483 | Caveat: The identity of the delimiting character is lost. | |
484 | Caveat: It doesn't work with multibyte strings unless all of the delimiter | |
485 | characters are ASCII characters < 0x30. | |
486 | ||
487 | See also strtok_r(). */ | |
488 | #if @GNULIB_STRSEP@ | |
489 | # if ! @HAVE_STRSEP@ | |
f434ba03 PA |
490 | _GL_FUNCDECL_SYS (strsep, char *, |
491 | (char **restrict __stringp, char const *restrict __delim) | |
492 | _GL_ARG_NONNULL ((1, 2))); | |
f6ea5628 | 493 | # endif |
f434ba03 PA |
494 | _GL_CXXALIAS_SYS (strsep, char *, |
495 | (char **restrict __stringp, char const *restrict __delim)); | |
496 | _GL_CXXALIASWARN (strsep); | |
f6ea5628 DJ |
497 | # if defined GNULIB_POSIXCHECK |
498 | # undef strsep | |
f434ba03 PA |
499 | _GL_WARN_ON_USE (strsep, "strsep cannot work correctly on character strings " |
500 | "in multibyte locales - " | |
501 | "use mbssep if you care about internationalization"); | |
f6ea5628 DJ |
502 | # endif |
503 | #elif defined GNULIB_POSIXCHECK | |
504 | # undef strsep | |
f434ba03 PA |
505 | # if HAVE_RAW_DECL_STRSEP |
506 | _GL_WARN_ON_USE (strsep, "strsep is unportable - " | |
507 | "use gnulib module strsep for portability"); | |
508 | # endif | |
f6ea5628 DJ |
509 | #endif |
510 | ||
511 | #if @GNULIB_STRSTR@ | |
512 | # if @REPLACE_STRSTR@ | |
f434ba03 PA |
513 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
514 | # define strstr rpl_strstr | |
515 | # endif | |
516 | _GL_FUNCDECL_RPL (strstr, char *, (const char *haystack, const char *needle) | |
517 | __attribute__ ((__pure__)) | |
518 | _GL_ARG_NONNULL ((1, 2))); | |
519 | _GL_CXXALIAS_RPL (strstr, char *, (const char *haystack, const char *needle)); | |
520 | # else | |
521 | /* On some systems, this function is defined as an overloaded function: | |
522 | extern "C++" { const char * strstr (const char *, const char *); } | |
523 | extern "C++" { char * strstr (char *, const char *); } */ | |
524 | _GL_CXXALIAS_SYS_CAST2 (strstr, | |
525 | char *, (const char *haystack, const char *needle), | |
526 | const char *, (const char *haystack, const char *needle)); | |
527 | # endif | |
528 | # if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \ | |
529 | && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) | |
530 | _GL_CXXALIASWARN1 (strstr, char *, (char *haystack, const char *needle)); | |
531 | _GL_CXXALIASWARN1 (strstr, const char *, | |
532 | (const char *haystack, const char *needle)); | |
533 | # else | |
534 | _GL_CXXALIASWARN (strstr); | |
f6ea5628 DJ |
535 | # endif |
536 | #elif defined GNULIB_POSIXCHECK | |
537 | /* strstr() does not work with multibyte strings if the locale encoding is | |
538 | different from UTF-8: | |
539 | POSIX says that it operates on "strings", and "string" in POSIX is defined | |
540 | as a sequence of bytes, not of characters. */ | |
541 | # undef strstr | |
f434ba03 PA |
542 | /* Assume strstr is always declared. */ |
543 | _GL_WARN_ON_USE (strstr, "strstr is quadratic on many systems, and cannot " | |
544 | "work correctly on character strings in most " | |
545 | "multibyte locales - " | |
546 | "use mbsstr if you care about internationalization, " | |
547 | "or use strstr if you care about speed"); | |
f6ea5628 DJ |
548 | #endif |
549 | ||
550 | /* Find the first occurrence of NEEDLE in HAYSTACK, using case-insensitive | |
551 | comparison. */ | |
552 | #if @GNULIB_STRCASESTR@ | |
553 | # if @REPLACE_STRCASESTR@ | |
f434ba03 PA |
554 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
555 | # define strcasestr rpl_strcasestr | |
556 | # endif | |
557 | _GL_FUNCDECL_RPL (strcasestr, char *, | |
558 | (const char *haystack, const char *needle) | |
559 | __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 2))); | |
560 | _GL_CXXALIAS_RPL (strcasestr, char *, | |
561 | (const char *haystack, const char *needle)); | |
562 | # else | |
563 | # if ! @HAVE_STRCASESTR@ | |
564 | _GL_FUNCDECL_SYS (strcasestr, char *, | |
565 | (const char *haystack, const char *needle) | |
566 | __attribute__ ((__pure__)) _GL_ARG_NONNULL ((1, 2))); | |
567 | # endif | |
568 | /* On some systems, this function is defined as an overloaded function: | |
569 | extern "C++" { const char * strcasestr (const char *, const char *); } | |
570 | extern "C++" { char * strcasestr (char *, const char *); } */ | |
571 | _GL_CXXALIAS_SYS_CAST2 (strcasestr, | |
572 | char *, (const char *haystack, const char *needle), | |
573 | const char *, (const char *haystack, const char *needle)); | |
f6ea5628 | 574 | # endif |
f434ba03 PA |
575 | # if __GLIBC__ == 2 && __GLIBC_MINOR__ >= 10 \ |
576 | && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)) | |
577 | _GL_CXXALIASWARN1 (strcasestr, char *, (char *haystack, const char *needle)); | |
578 | _GL_CXXALIASWARN1 (strcasestr, const char *, | |
579 | (const char *haystack, const char *needle)); | |
580 | # else | |
581 | _GL_CXXALIASWARN (strcasestr); | |
f6ea5628 DJ |
582 | # endif |
583 | #elif defined GNULIB_POSIXCHECK | |
584 | /* strcasestr() does not work with multibyte strings: | |
585 | It is a glibc extension, and glibc implements it only for unibyte | |
586 | locales. */ | |
587 | # undef strcasestr | |
f434ba03 PA |
588 | # if HAVE_RAW_DECL_STRCASESTR |
589 | _GL_WARN_ON_USE (strcasestr, "strcasestr does work correctly on character " | |
590 | "strings in multibyte locales - " | |
591 | "use mbscasestr if you care about " | |
592 | "internationalization, or use c-strcasestr if you want " | |
593 | "a locale independent function"); | |
594 | # endif | |
f6ea5628 DJ |
595 | #endif |
596 | ||
597 | /* Parse S into tokens separated by characters in DELIM. | |
598 | If S is NULL, the saved pointer in SAVE_PTR is used as | |
599 | the next starting point. For example: | |
f434ba03 PA |
600 | char s[] = "-abc-=-def"; |
601 | char *sp; | |
602 | x = strtok_r(s, "-", &sp); // x = "abc", sp = "=-def" | |
603 | x = strtok_r(NULL, "-=", &sp); // x = "def", sp = NULL | |
604 | x = strtok_r(NULL, "=", &sp); // x = NULL | |
605 | // s = "abc\0-def\0" | |
f6ea5628 DJ |
606 | |
607 | This is a variant of strtok() that is multithread-safe. | |
608 | ||
609 | For the POSIX documentation for this function, see: | |
610 | http://www.opengroup.org/susv3xsh/strtok.html | |
611 | ||
612 | Caveat: It modifies the original string. | |
613 | Caveat: These functions cannot be used on constant strings. | |
614 | Caveat: The identity of the delimiting character is lost. | |
615 | Caveat: It doesn't work with multibyte strings unless all of the delimiter | |
616 | characters are ASCII characters < 0x30. | |
617 | ||
618 | See also strsep(). */ | |
619 | #if @GNULIB_STRTOK_R@ | |
f434ba03 PA |
620 | # if @REPLACE_STRTOK_R@ |
621 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
622 | # undef strtok_r | |
623 | # define strtok_r rpl_strtok_r | |
624 | # endif | |
625 | _GL_FUNCDECL_RPL (strtok_r, char *, | |
626 | (char *restrict s, char const *restrict delim, | |
627 | char **restrict save_ptr) | |
628 | _GL_ARG_NONNULL ((2, 3))); | |
629 | _GL_CXXALIAS_RPL (strtok_r, char *, | |
630 | (char *restrict s, char const *restrict delim, | |
631 | char **restrict save_ptr)); | |
632 | # else | |
633 | # if @UNDEFINE_STRTOK_R@ || defined GNULIB_POSIXCHECK | |
634 | # undef strtok_r | |
635 | # endif | |
636 | # if ! @HAVE_DECL_STRTOK_R@ | |
637 | _GL_FUNCDECL_SYS (strtok_r, char *, | |
638 | (char *restrict s, char const *restrict delim, | |
639 | char **restrict save_ptr) | |
640 | _GL_ARG_NONNULL ((2, 3))); | |
641 | # endif | |
642 | _GL_CXXALIAS_SYS (strtok_r, char *, | |
643 | (char *restrict s, char const *restrict delim, | |
644 | char **restrict save_ptr)); | |
f6ea5628 | 645 | # endif |
f434ba03 | 646 | _GL_CXXALIASWARN (strtok_r); |
f6ea5628 | 647 | # if defined GNULIB_POSIXCHECK |
f434ba03 PA |
648 | _GL_WARN_ON_USE (strtok_r, "strtok_r cannot work correctly on character " |
649 | "strings in multibyte locales - " | |
650 | "use mbstok_r if you care about internationalization"); | |
f6ea5628 DJ |
651 | # endif |
652 | #elif defined GNULIB_POSIXCHECK | |
653 | # undef strtok_r | |
f434ba03 PA |
654 | # if HAVE_RAW_DECL_STRTOK_R |
655 | _GL_WARN_ON_USE (strtok_r, "strtok_r is unportable - " | |
656 | "use gnulib module strtok_r for portability"); | |
657 | # endif | |
f6ea5628 DJ |
658 | #endif |
659 | ||
660 | ||
661 | /* The following functions are not specified by POSIX. They are gnulib | |
662 | extensions. */ | |
663 | ||
664 | #if @GNULIB_MBSLEN@ | |
665 | /* Return the number of multibyte characters in the character string STRING. | |
666 | This considers multibyte characters, unlike strlen, which counts bytes. */ | |
f434ba03 PA |
667 | # ifdef __MirBSD__ /* MirBSD defines mbslen as a macro. Override it. */ |
668 | # undef mbslen | |
669 | # endif | |
670 | # if @HAVE_MBSLEN@ /* AIX, OSF/1, MirBSD define mbslen already in libc. */ | |
671 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
672 | # define mbslen rpl_mbslen | |
673 | # endif | |
674 | _GL_FUNCDECL_RPL (mbslen, size_t, (const char *string) _GL_ARG_NONNULL ((1))); | |
675 | _GL_CXXALIAS_RPL (mbslen, size_t, (const char *string)); | |
676 | # else | |
677 | _GL_FUNCDECL_SYS (mbslen, size_t, (const char *string) _GL_ARG_NONNULL ((1))); | |
678 | _GL_CXXALIAS_SYS (mbslen, size_t, (const char *string)); | |
679 | # endif | |
680 | _GL_CXXALIASWARN (mbslen); | |
f6ea5628 DJ |
681 | #endif |
682 | ||
683 | #if @GNULIB_MBSNLEN@ | |
684 | /* Return the number of multibyte characters in the character string starting | |
685 | at STRING and ending at STRING + LEN. */ | |
f434ba03 PA |
686 | _GL_EXTERN_C size_t mbsnlen (const char *string, size_t len) |
687 | _GL_ARG_NONNULL ((1)); | |
f6ea5628 DJ |
688 | #endif |
689 | ||
690 | #if @GNULIB_MBSCHR@ | |
691 | /* Locate the first single-byte character C in the character string STRING, | |
692 | and return a pointer to it. Return NULL if C is not found in STRING. | |
693 | Unlike strchr(), this function works correctly in multibyte locales with | |
694 | encodings such as GB18030. */ | |
f434ba03 PA |
695 | # if defined __hpux |
696 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
697 | # define mbschr rpl_mbschr /* avoid collision with HP-UX function */ | |
698 | # endif | |
699 | _GL_FUNCDECL_RPL (mbschr, char *, (const char *string, int c) | |
700 | _GL_ARG_NONNULL ((1))); | |
701 | _GL_CXXALIAS_RPL (mbschr, char *, (const char *string, int c)); | |
702 | # else | |
703 | _GL_FUNCDECL_SYS (mbschr, char *, (const char *string, int c) | |
704 | _GL_ARG_NONNULL ((1))); | |
705 | _GL_CXXALIAS_SYS (mbschr, char *, (const char *string, int c)); | |
706 | # endif | |
707 | _GL_CXXALIASWARN (mbschr); | |
f6ea5628 DJ |
708 | #endif |
709 | ||
710 | #if @GNULIB_MBSRCHR@ | |
711 | /* Locate the last single-byte character C in the character string STRING, | |
712 | and return a pointer to it. Return NULL if C is not found in STRING. | |
713 | Unlike strrchr(), this function works correctly in multibyte locales with | |
714 | encodings such as GB18030. */ | |
f434ba03 PA |
715 | # if defined __hpux |
716 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
717 | # define mbsrchr rpl_mbsrchr /* avoid collision with HP-UX function */ | |
718 | # endif | |
719 | _GL_FUNCDECL_RPL (mbsrchr, char *, (const char *string, int c) | |
720 | _GL_ARG_NONNULL ((1))); | |
721 | _GL_CXXALIAS_RPL (mbsrchr, char *, (const char *string, int c)); | |
722 | # else | |
723 | _GL_FUNCDECL_SYS (mbsrchr, char *, (const char *string, int c) | |
724 | _GL_ARG_NONNULL ((1))); | |
725 | _GL_CXXALIAS_SYS (mbsrchr, char *, (const char *string, int c)); | |
726 | # endif | |
727 | _GL_CXXALIASWARN (mbsrchr); | |
f6ea5628 DJ |
728 | #endif |
729 | ||
730 | #if @GNULIB_MBSSTR@ | |
731 | /* Find the first occurrence of the character string NEEDLE in the character | |
732 | string HAYSTACK. Return NULL if NEEDLE is not found in HAYSTACK. | |
733 | Unlike strstr(), this function works correctly in multibyte locales with | |
734 | encodings different from UTF-8. */ | |
f434ba03 PA |
735 | _GL_EXTERN_C char * mbsstr (const char *haystack, const char *needle) |
736 | _GL_ARG_NONNULL ((1, 2)); | |
f6ea5628 DJ |
737 | #endif |
738 | ||
739 | #if @GNULIB_MBSCASECMP@ | |
740 | /* Compare the character strings S1 and S2, ignoring case, returning less than, | |
741 | equal to or greater than zero if S1 is lexicographically less than, equal to | |
742 | or greater than S2. | |
743 | Note: This function may, in multibyte locales, return 0 for strings of | |
744 | different lengths! | |
745 | Unlike strcasecmp(), this function works correctly in multibyte locales. */ | |
f434ba03 PA |
746 | _GL_EXTERN_C int mbscasecmp (const char *s1, const char *s2) |
747 | _GL_ARG_NONNULL ((1, 2)); | |
f6ea5628 DJ |
748 | #endif |
749 | ||
750 | #if @GNULIB_MBSNCASECMP@ | |
751 | /* Compare the initial segment of the character string S1 consisting of at most | |
752 | N characters with the initial segment of the character string S2 consisting | |
753 | of at most N characters, ignoring case, returning less than, equal to or | |
754 | greater than zero if the initial segment of S1 is lexicographically less | |
755 | than, equal to or greater than the initial segment of S2. | |
756 | Note: This function may, in multibyte locales, return 0 for initial segments | |
757 | of different lengths! | |
758 | Unlike strncasecmp(), this function works correctly in multibyte locales. | |
759 | But beware that N is not a byte count but a character count! */ | |
f434ba03 PA |
760 | _GL_EXTERN_C int mbsncasecmp (const char *s1, const char *s2, size_t n) |
761 | _GL_ARG_NONNULL ((1, 2)); | |
f6ea5628 DJ |
762 | #endif |
763 | ||
764 | #if @GNULIB_MBSPCASECMP@ | |
765 | /* Compare the initial segment of the character string STRING consisting of | |
766 | at most mbslen (PREFIX) characters with the character string PREFIX, | |
767 | ignoring case, returning less than, equal to or greater than zero if this | |
768 | initial segment is lexicographically less than, equal to or greater than | |
769 | PREFIX. | |
770 | Note: This function may, in multibyte locales, return 0 if STRING is of | |
771 | smaller length than PREFIX! | |
772 | Unlike strncasecmp(), this function works correctly in multibyte | |
773 | locales. */ | |
f434ba03 PA |
774 | _GL_EXTERN_C char * mbspcasecmp (const char *string, const char *prefix) |
775 | _GL_ARG_NONNULL ((1, 2)); | |
f6ea5628 DJ |
776 | #endif |
777 | ||
778 | #if @GNULIB_MBSCASESTR@ | |
779 | /* Find the first occurrence of the character string NEEDLE in the character | |
780 | string HAYSTACK, using case-insensitive comparison. | |
781 | Note: This function may, in multibyte locales, return success even if | |
782 | strlen (haystack) < strlen (needle) ! | |
783 | Unlike strcasestr(), this function works correctly in multibyte locales. */ | |
f434ba03 PA |
784 | _GL_EXTERN_C char * mbscasestr (const char *haystack, const char *needle) |
785 | _GL_ARG_NONNULL ((1, 2)); | |
f6ea5628 DJ |
786 | #endif |
787 | ||
788 | #if @GNULIB_MBSCSPN@ | |
789 | /* Find the first occurrence in the character string STRING of any character | |
790 | in the character string ACCEPT. Return the number of bytes from the | |
791 | beginning of the string to this occurrence, or to the end of the string | |
792 | if none exists. | |
793 | Unlike strcspn(), this function works correctly in multibyte locales. */ | |
f434ba03 PA |
794 | _GL_EXTERN_C size_t mbscspn (const char *string, const char *accept) |
795 | _GL_ARG_NONNULL ((1, 2)); | |
f6ea5628 DJ |
796 | #endif |
797 | ||
798 | #if @GNULIB_MBSPBRK@ | |
799 | /* Find the first occurrence in the character string STRING of any character | |
800 | in the character string ACCEPT. Return the pointer to it, or NULL if none | |
801 | exists. | |
802 | Unlike strpbrk(), this function works correctly in multibyte locales. */ | |
f434ba03 PA |
803 | # if defined __hpux |
804 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | |
805 | # define mbspbrk rpl_mbspbrk /* avoid collision with HP-UX function */ | |
806 | # endif | |
807 | _GL_FUNCDECL_RPL (mbspbrk, char *, (const char *string, const char *accept) | |
808 | _GL_ARG_NONNULL ((1, 2))); | |
809 | _GL_CXXALIAS_RPL (mbspbrk, char *, (const char *string, const char *accept)); | |
810 | # else | |
811 | _GL_FUNCDECL_SYS (mbspbrk, char *, (const char *string, const char *accept) | |
812 | _GL_ARG_NONNULL ((1, 2))); | |
813 | _GL_CXXALIAS_SYS (mbspbrk, char *, (const char *string, const char *accept)); | |
814 | # endif | |
815 | _GL_CXXALIASWARN (mbspbrk); | |
f6ea5628 DJ |
816 | #endif |
817 | ||
818 | #if @GNULIB_MBSSPN@ | |
819 | /* Find the first occurrence in the character string STRING of any character | |
820 | not in the character string REJECT. Return the number of bytes from the | |
821 | beginning of the string to this occurrence, or to the end of the string | |
822 | if none exists. | |
823 | Unlike strspn(), this function works correctly in multibyte locales. */ | |
f434ba03 PA |
824 | _GL_EXTERN_C size_t mbsspn (const char *string, const char *reject) |
825 | _GL_ARG_NONNULL ((1, 2)); | |
f6ea5628 DJ |
826 | #endif |
827 | ||
828 | #if @GNULIB_MBSSEP@ | |
829 | /* Search the next delimiter (multibyte character listed in the character | |
830 | string DELIM) starting at the character string *STRINGP. | |
831 | If one is found, overwrite it with a NUL, and advance *STRINGP to point | |
832 | to the next multibyte character after it. Otherwise, set *STRINGP to NULL. | |
833 | If *STRINGP was already NULL, nothing happens. | |
834 | Return the old value of *STRINGP. | |
835 | ||
836 | This is a variant of mbstok_r() that supports empty fields. | |
837 | ||
838 | Caveat: It modifies the original string. | |
839 | Caveat: These functions cannot be used on constant strings. | |
840 | Caveat: The identity of the delimiting character is lost. | |
841 | ||
842 | See also mbstok_r(). */ | |
f434ba03 PA |
843 | _GL_EXTERN_C char * mbssep (char **stringp, const char *delim) |
844 | _GL_ARG_NONNULL ((1, 2)); | |
f6ea5628 DJ |
845 | #endif |
846 | ||
847 | #if @GNULIB_MBSTOK_R@ | |
848 | /* Parse the character string STRING into tokens separated by characters in | |
849 | the character string DELIM. | |
850 | If STRING is NULL, the saved pointer in SAVE_PTR is used as | |
851 | the next starting point. For example: | |
f434ba03 PA |
852 | char s[] = "-abc-=-def"; |
853 | char *sp; | |
854 | x = mbstok_r(s, "-", &sp); // x = "abc", sp = "=-def" | |
855 | x = mbstok_r(NULL, "-=", &sp); // x = "def", sp = NULL | |
856 | x = mbstok_r(NULL, "=", &sp); // x = NULL | |
857 | // s = "abc\0-def\0" | |
f6ea5628 DJ |
858 | |
859 | Caveat: It modifies the original string. | |
860 | Caveat: These functions cannot be used on constant strings. | |
861 | Caveat: The identity of the delimiting character is lost. | |
862 | ||
863 | See also mbssep(). */ | |
f434ba03 PA |
864 | _GL_EXTERN_C char * mbstok_r (char *string, const char *delim, char **save_ptr) |
865 | _GL_ARG_NONNULL ((2, 3)); | |
f6ea5628 DJ |
866 | #endif |
867 | ||
868 | /* Map any int, typically from errno, into an error message. */ | |
869 | #if @GNULIB_STRERROR@ | |
870 | # if @REPLACE_STRERROR@ | |
f434ba03 PA |
871 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
872 | # undef strerror | |
873 | # define strerror rpl_strerror | |
874 | # endif | |
875 | _GL_FUNCDECL_RPL (strerror, char *, (int)); | |
876 | _GL_CXXALIAS_RPL (strerror, char *, (int)); | |
877 | # else | |
878 | _GL_CXXALIAS_SYS (strerror, char *, (int)); | |
f6ea5628 | 879 | # endif |
f434ba03 | 880 | _GL_CXXALIASWARN (strerror); |
f6ea5628 DJ |
881 | #elif defined GNULIB_POSIXCHECK |
882 | # undef strerror | |
f434ba03 PA |
883 | /* Assume strerror is always declared. */ |
884 | _GL_WARN_ON_USE (strerror, "strerror is unportable - " | |
885 | "use gnulib module strerror to guarantee non-NULL result"); | |
f6ea5628 DJ |
886 | #endif |
887 | ||
888 | #if @GNULIB_STRSIGNAL@ | |
889 | # if @REPLACE_STRSIGNAL@ | |
f434ba03 PA |
890 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) |
891 | # define strsignal rpl_strsignal | |
892 | # endif | |
893 | _GL_FUNCDECL_RPL (strsignal, char *, (int __sig)); | |
894 | _GL_CXXALIAS_RPL (strsignal, char *, (int __sig)); | |
895 | # else | |
896 | # if ! @HAVE_DECL_STRSIGNAL@ | |
897 | _GL_FUNCDECL_SYS (strsignal, char *, (int __sig)); | |
898 | # endif | |
899 | /* Need to cast, because on Cygwin 1.5.x systems, the return type is | |
900 | 'const char *'. */ | |
901 | _GL_CXXALIAS_SYS_CAST (strsignal, char *, (int __sig)); | |
f6ea5628 | 902 | # endif |
f434ba03 | 903 | _GL_CXXALIASWARN (strsignal); |
f6ea5628 DJ |
904 | #elif defined GNULIB_POSIXCHECK |
905 | # undef strsignal | |
f434ba03 PA |
906 | # if HAVE_RAW_DECL_STRSIGNAL |
907 | _GL_WARN_ON_USE (strsignal, "strsignal is unportable - " | |
908 | "use gnulib module strsignal for portability"); | |
909 | # endif | |
f6ea5628 DJ |
910 | #endif |
911 | ||
f434ba03 PA |
912 | #if @GNULIB_STRVERSCMP@ |
913 | # if !@HAVE_STRVERSCMP@ | |
914 | _GL_FUNCDECL_SYS (strverscmp, int, (const char *, const char *) | |
915 | _GL_ARG_NONNULL ((1, 2))); | |
916 | # endif | |
917 | _GL_CXXALIAS_SYS (strverscmp, int, (const char *, const char *)); | |
918 | _GL_CXXALIASWARN (strverscmp); | |
919 | #elif defined GNULIB_POSIXCHECK | |
920 | # undef strverscmp | |
921 | # if HAVE_RAW_DECL_STRVERSCMP | |
922 | _GL_WARN_ON_USE (strverscmp, "strverscmp is unportable - " | |
923 | "use gnulib module strverscmp for portability"); | |
924 | # endif | |
f6ea5628 DJ |
925 | #endif |
926 | ||
f434ba03 | 927 | |
f6ea5628 DJ |
928 | #endif /* _GL_STRING_H */ |
929 | #endif /* _GL_STRING_H */ |