1 /* Extended regular expression matching and search library.
2 Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library 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 GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 #ifndef _REGEX_INTERNAL_H
22 #define _REGEX_INTERNAL_H 1
30 #if defined HAVE_LANGINFO_H || defined HAVE_LANGINFO_CODESET || defined _LIBC
31 # include <langinfo.h>
33 #if defined HAVE_LOCALE_H || defined _LIBC
36 #if defined HAVE_WCHAR_H || defined _LIBC
38 #endif /* HAVE_WCHAR_H || _LIBC */
39 #if defined HAVE_WCTYPE_H || defined _LIBC
41 #endif /* HAVE_WCTYPE_H || _LIBC */
43 # include <bits/libc-lock.h>
45 # define __libc_lock_define(CLASS,NAME)
46 # define __libc_lock_init(NAME) do { } while (0)
47 # define __libc_lock_lock(NAME) do { } while (0)
48 # define __libc_lock_unlock(NAME) do { } while (0)
51 /* In case that the system doesn't have isblank(). */
52 #if !defined _LIBC && !defined HAVE_ISBLANK && !defined isblank
53 # define isblank(ch) ((ch) == ' ' || (ch) == '\t')
57 # ifndef _RE_DEFINE_LOCALE_FUNCTIONS
58 # define _RE_DEFINE_LOCALE_FUNCTIONS 1
59 # include <locale/localeinfo.h>
60 # include <locale/elem-hash.h>
61 # include <locale/coll-lookup.h>
65 /* This is for other GNU distributions with internationalized messages. */
66 #if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC
70 # define gettext(msgid) \
71 INTUSE(__dcgettext) (_libc_intl_domainname, msgid, LC_MESSAGES)
74 # define gettext(msgid) (msgid)
78 /* This define is so xgettext can find the internationalizable
80 # define gettext_noop(String) String
83 #if (defined MB_CUR_MAX && HAVE_LOCALE_H && HAVE_WCTYPE_H && HAVE_WCHAR_H && HAVE_WCRTOMB && HAVE_MBRTOWC && HAVE_WCSCOLL) || _LIBC
84 # define RE_ENABLE_I18N
88 # define BE(expr, val) __builtin_expect (expr, val)
90 # define BE(expr, val) (expr)
94 /* Number of bits in a byte. */
96 /* Number of single byte character. */
99 #define COLL_ELEM_LEN_MAX 8
101 /* The character which represents newline. */
102 #define NEWLINE_CHAR '\n'
103 #define WIDE_NEWLINE_CHAR L'\n'
105 /* Rename to standard API for using out of glibc. */
107 # define __wctype wctype
108 # define __iswctype iswctype
109 # define __btowc btowc
110 # define __mempcpy mempcpy
111 # define __wcrtomb wcrtomb
112 # define __regfree regfree
113 # define attribute_hidden
114 #endif /* not _LIBC */
117 # define __attribute(arg) __attribute__ (arg)
119 # define __attribute(arg)
122 extern const char __re_error_msgid
[] attribute_hidden
;
123 extern const size_t __re_error_msgid_idx
[] attribute_hidden
;
125 /* Number of bits in an unsinged int. */
126 #define UINT_BITS (sizeof (unsigned int) * BYTE_BITS)
127 /* Number of unsigned int in an bit_set. */
128 #define BITSET_UINTS ((SBC_MAX + UINT_BITS - 1) / UINT_BITS)
129 typedef unsigned int bitset
[BITSET_UINTS
];
130 typedef unsigned int *re_bitset_ptr_t
;
131 typedef const unsigned int *re_const_bitset_ptr_t
;
133 #define bitset_set(set,i) (set[i / UINT_BITS] |= 1 << i % UINT_BITS)
134 #define bitset_clear(set,i) (set[i / UINT_BITS] &= ~(1 << i % UINT_BITS))
135 #define bitset_contain(set,i) (set[i / UINT_BITS] & (1 << i % UINT_BITS))
136 #define bitset_empty(set) memset (set, 0, sizeof (unsigned int) * BITSET_UINTS)
137 #define bitset_set_all(set) \
138 memset (set, 255, sizeof (unsigned int) * BITSET_UINTS)
139 #define bitset_copy(dest,src) \
140 memcpy (dest, src, sizeof (unsigned int) * BITSET_UINTS)
141 static inline void bitset_not (bitset set
);
142 static inline void bitset_merge (bitset dest
, const bitset src
);
143 static inline void bitset_not_merge (bitset dest
, const bitset src
);
144 static inline void bitset_mask (bitset dest
, const bitset src
);
146 #define PREV_WORD_CONSTRAINT 0x0001
147 #define PREV_NOTWORD_CONSTRAINT 0x0002
148 #define NEXT_WORD_CONSTRAINT 0x0004
149 #define NEXT_NOTWORD_CONSTRAINT 0x0008
150 #define PREV_NEWLINE_CONSTRAINT 0x0010
151 #define NEXT_NEWLINE_CONSTRAINT 0x0020
152 #define PREV_BEGBUF_CONSTRAINT 0x0040
153 #define NEXT_ENDBUF_CONSTRAINT 0x0080
154 #define WORD_DELIM_CONSTRAINT 0x0100
155 #define NOT_WORD_DELIM_CONSTRAINT 0x0200
159 INSIDE_WORD
= PREV_WORD_CONSTRAINT
| NEXT_WORD_CONSTRAINT
,
160 WORD_FIRST
= PREV_NOTWORD_CONSTRAINT
| NEXT_WORD_CONSTRAINT
,
161 WORD_LAST
= PREV_WORD_CONSTRAINT
| NEXT_NOTWORD_CONSTRAINT
,
162 INSIDE_NOTWORD
= PREV_NOTWORD_CONSTRAINT
| NEXT_NOTWORD_CONSTRAINT
,
163 LINE_FIRST
= PREV_NEWLINE_CONSTRAINT
,
164 LINE_LAST
= NEXT_NEWLINE_CONSTRAINT
,
165 BUF_FIRST
= PREV_BEGBUF_CONSTRAINT
,
166 BUF_LAST
= NEXT_ENDBUF_CONSTRAINT
,
167 WORD_DELIM
= WORD_DELIM_CONSTRAINT
,
168 NOT_WORD_DELIM
= NOT_WORD_DELIM_CONSTRAINT
182 /* Node type, These are used by token, node, tree. */
188 #ifdef RE_ENABLE_I18N
191 #endif /* RE_ENABLE_I18N */
193 /* We define EPSILON_BIT as a macro so that OP_OPEN_SUBEXP is used
194 when the debugger shows values of this enum type. */
195 #define EPSILON_BIT 8
196 OP_OPEN_SUBEXP
= EPSILON_BIT
| 0,
197 OP_CLOSE_SUBEXP
= EPSILON_BIT
| 1,
198 OP_ALT
= EPSILON_BIT
| 2,
199 OP_DUP_ASTERISK
= EPSILON_BIT
| 3,
200 ANCHOR
= EPSILON_BIT
| 4,
202 /* Tree type, these are used only by tree. */
206 /* Token type, these are used only by token. */
218 OP_CLOSE_EQUIV_CLASS
,
229 #ifdef RE_ENABLE_I18N
232 /* Multibyte characters. */
235 /* Collating symbols. */
240 /* Equivalence classes. */
242 int32_t *equiv_classes
;
245 /* Range expressions. */
247 uint32_t *range_starts
;
248 uint32_t *range_ends
;
249 # else /* not _LIBC */
250 wchar_t *range_starts
;
252 # endif /* not _LIBC */
254 /* Character classes. */
255 wctype_t *char_classes
;
257 /* If this character set is the non-matching list. */
258 unsigned int non_match
: 1;
260 /* # of multibyte characters. */
263 /* # of collating symbols. */
266 /* # of equivalence classes. */
269 /* # of range expressions. */
272 /* # of character classes. */
275 #endif /* RE_ENABLE_I18N */
281 unsigned char c
; /* for CHARACTER */
282 re_bitset_ptr_t sbcset
; /* for SIMPLE_BRACKET */
283 #ifdef RE_ENABLE_I18N
284 re_charset_t
*mbcset
; /* for COMPLEX_BRACKET */
285 #endif /* RE_ENABLE_I18N */
286 int idx
; /* for BACK_REF */
287 re_context_type ctx_type
; /* for ANCHOR */
290 re_token_type_t type
: 8;
292 re_token_type_t type
;
294 unsigned int constraint
: 10; /* context constraint */
295 unsigned int duplicated
: 1;
296 unsigned int opt_subexp
: 1;
297 #ifdef RE_ENABLE_I18N
298 unsigned int accept_mb
: 1;
299 /* These 2 bits can be moved into the union if needed (e.g. if running out
300 of bits; move opr.c to opr.c.c and move the flags to opr.c.flags). */
301 unsigned int mb_partial
: 1;
303 unsigned int word_char
: 1;
306 #define IS_EPSILON_NODE(type) ((type) & EPSILON_BIT)
310 /* Indicate the raw buffer which is the original string passed as an
311 argument of regexec(), re_search(), etc.. */
312 const unsigned char *raw_mbs
;
313 /* Store the multibyte string. In case of "case insensitive mode" like
314 REG_ICASE, upper cases of the string are stored, otherwise MBS points
315 the same address that RAW_MBS points. */
317 #ifdef RE_ENABLE_I18N
318 /* Store the wide character string which is corresponding to MBS. */
323 /* Index in RAW_MBS. Each character mbs[i] corresponds to
324 raw_mbs[raw_mbs_idx + i]. */
326 /* The length of the valid characters in the buffers. */
328 /* The corresponding number of bytes in raw_mbs array. */
330 /* The length of the buffers MBS and WCS. */
332 /* The index in MBS, which is updated by re_string_fetch_byte. */
334 /* length of RAW_MBS array. */
336 /* This is RAW_LEN - RAW_MBS_IDX + VALID_LEN - VALID_RAW_LEN. */
338 /* End of the buffer may be shorter than its length in the cases such
339 as re_match_2, re_search_2. Then, we use STOP for end of the buffer
342 /* This is RAW_STOP - RAW_MBS_IDX adjusted through OFFSETS. */
345 /* The context of mbs[0]. We store the context independently, since
346 the context of mbs[0] may be different from raw_mbs[0], which is
347 the beginning of the input string. */
348 unsigned int tip_context
;
349 /* The translation passed as a part of an argument of re_compile_pattern. */
350 unsigned RE_TRANSLATE_TYPE trans
;
351 /* Copy of re_dfa_t's word_char. */
352 re_const_bitset_ptr_t word_char
;
353 /* 1 if REG_ICASE. */
355 unsigned char is_utf8
;
356 unsigned char map_notascii
;
357 unsigned char mbs_allocated
;
358 unsigned char offsets_needed
;
359 unsigned char newline_anchor
;
360 unsigned char word_ops_used
;
363 typedef struct re_string_t re_string_t
;
367 typedef struct re_dfa_t re_dfa_t
;
371 # define internal_function __attribute ((regparm (3), stdcall))
373 # define internal_function
377 #ifndef RE_NO_INTERNAL_PROTOTYPES
378 static reg_errcode_t
re_string_allocate (re_string_t
*pstr
, const char *str
,
379 int len
, int init_len
,
380 RE_TRANSLATE_TYPE trans
, int icase
,
383 static reg_errcode_t
re_string_construct (re_string_t
*pstr
, const char *str
,
384 int len
, RE_TRANSLATE_TYPE trans
,
385 int icase
, const re_dfa_t
*dfa
)
387 static reg_errcode_t
re_string_reconstruct (re_string_t
*pstr
, int idx
,
388 int eflags
) internal_function
;
389 static reg_errcode_t
re_string_realloc_buffers (re_string_t
*pstr
,
392 # ifdef RE_ENABLE_I18N
393 static void build_wcs_buffer (re_string_t
*pstr
) internal_function
;
394 static int build_wcs_upper_buffer (re_string_t
*pstr
) internal_function
;
395 # endif /* RE_ENABLE_I18N */
396 static void build_upper_buffer (re_string_t
*pstr
) internal_function
;
397 static void re_string_translate_buffer (re_string_t
*pstr
) internal_function
;
398 static void re_string_destruct (re_string_t
*pstr
) internal_function
;
399 # ifdef RE_ENABLE_I18N
400 static int re_string_elem_size_at (const re_string_t
*pstr
, int idx
)
401 internal_function
__attribute ((pure
));
402 static inline int re_string_char_size_at (const re_string_t
*pstr
, int idx
)
403 internal_function
__attribute ((pure
));
404 static inline wint_t re_string_wchar_at (const re_string_t
*pstr
, int idx
)
405 internal_function
__attribute ((pure
));
406 # endif /* RE_ENABLE_I18N */
407 static unsigned int re_string_context_at (const re_string_t
*input
, int idx
,
409 internal_function
__attribute ((pure
));
410 static unsigned char re_string_peek_byte_case (const re_string_t
*pstr
,
412 internal_function
__attribute ((pure
));
413 static unsigned char re_string_fetch_byte_case (re_string_t
*pstr
)
414 internal_function
__attribute ((pure
));
416 #define re_string_peek_byte(pstr, offset) \
417 ((pstr)->mbs[(pstr)->cur_idx + offset])
418 #define re_string_fetch_byte(pstr) \
419 ((pstr)->mbs[(pstr)->cur_idx++])
420 #define re_string_first_byte(pstr, idx) \
421 ((idx) == (pstr)->valid_len || (pstr)->wcs[idx] != WEOF)
422 #define re_string_is_single_byte_char(pstr, idx) \
423 ((pstr)->wcs[idx] != WEOF && ((pstr)->valid_len == (idx) + 1 \
424 || (pstr)->wcs[(idx) + 1] != WEOF))
425 #define re_string_eoi(pstr) ((pstr)->stop <= (pstr)->cur_idx)
426 #define re_string_cur_idx(pstr) ((pstr)->cur_idx)
427 #define re_string_get_buffer(pstr) ((pstr)->mbs)
428 #define re_string_length(pstr) ((pstr)->len)
429 #define re_string_byte_at(pstr,idx) ((pstr)->mbs[idx])
430 #define re_string_skip_bytes(pstr,idx) ((pstr)->cur_idx += (idx))
431 #define re_string_set_index(pstr,idx) ((pstr)->cur_idx = (idx))
433 #define re_malloc(t,n) ((t *) malloc ((n) * sizeof (t)))
434 #define re_realloc(p,t,n) ((t *) realloc (p, (n) * sizeof (t)))
435 #define re_free(p) free (p)
439 struct bin_tree_t
*parent
;
440 struct bin_tree_t
*left
;
441 struct bin_tree_t
*right
;
442 struct bin_tree_t
*first
;
443 struct bin_tree_t
*next
;
447 /* `node_idx' is the index in dfa->nodes, if `type' == 0.
448 Otherwise `type' indicate the type of this node. */
451 typedef struct bin_tree_t bin_tree_t
;
453 #define BIN_TREE_STORAGE_SIZE \
454 ((1024 - sizeof (void *)) / sizeof (bin_tree_t))
456 struct bin_tree_storage_t
458 struct bin_tree_storage_t
*next
;
459 bin_tree_t data
[BIN_TREE_STORAGE_SIZE
];
461 typedef struct bin_tree_storage_t bin_tree_storage_t
;
463 #define CONTEXT_WORD 1
464 #define CONTEXT_NEWLINE (CONTEXT_WORD << 1)
465 #define CONTEXT_BEGBUF (CONTEXT_NEWLINE << 1)
466 #define CONTEXT_ENDBUF (CONTEXT_BEGBUF << 1)
468 #define IS_WORD_CONTEXT(c) ((c) & CONTEXT_WORD)
469 #define IS_NEWLINE_CONTEXT(c) ((c) & CONTEXT_NEWLINE)
470 #define IS_BEGBUF_CONTEXT(c) ((c) & CONTEXT_BEGBUF)
471 #define IS_ENDBUF_CONTEXT(c) ((c) & CONTEXT_ENDBUF)
472 #define IS_ORDINARY_CONTEXT(c) ((c) == 0)
474 #define IS_WORD_CHAR(ch) (isalnum (ch) || (ch) == '_')
475 #define IS_NEWLINE(ch) ((ch) == NEWLINE_CHAR)
476 #define IS_WIDE_WORD_CHAR(ch) (iswalnum (ch) || (ch) == L'_')
477 #define IS_WIDE_NEWLINE(ch) ((ch) == WIDE_NEWLINE_CHAR)
479 #define NOT_SATISFY_PREV_CONSTRAINT(constraint,context) \
480 ((((constraint) & PREV_WORD_CONSTRAINT) && !IS_WORD_CONTEXT (context)) \
481 || ((constraint & PREV_NOTWORD_CONSTRAINT) && IS_WORD_CONTEXT (context)) \
482 || ((constraint & PREV_NEWLINE_CONSTRAINT) && !IS_NEWLINE_CONTEXT (context))\
483 || ((constraint & PREV_BEGBUF_CONSTRAINT) && !IS_BEGBUF_CONTEXT (context)))
485 #define NOT_SATISFY_NEXT_CONSTRAINT(constraint,context) \
486 ((((constraint) & NEXT_WORD_CONSTRAINT) && !IS_WORD_CONTEXT (context)) \
487 || (((constraint) & NEXT_NOTWORD_CONSTRAINT) && IS_WORD_CONTEXT (context)) \
488 || (((constraint) & NEXT_NEWLINE_CONSTRAINT) && !IS_NEWLINE_CONTEXT (context)) \
489 || (((constraint) & NEXT_ENDBUF_CONSTRAINT) && !IS_ENDBUF_CONTEXT (context)))
495 re_node_set non_eps_nodes
;
496 re_node_set inveclosure
;
497 re_node_set
*entrance_nodes
;
498 struct re_dfastate_t
**trtable
, **word_trtable
;
499 unsigned int context
: 4;
500 unsigned int halt
: 1;
501 /* If this state can accept `multi byte'.
502 Note that we refer to multibyte characters, and multi character
503 collating elements as `multi byte'. */
504 unsigned int accept_mb
: 1;
505 /* If this state has backreference node(s). */
506 unsigned int has_backref
: 1;
507 unsigned int has_constraint
: 1;
509 typedef struct re_dfastate_t re_dfastate_t
;
511 struct re_state_table_entry
515 re_dfastate_t
**array
;
518 /* Array type used in re_sub_match_last_t and re_sub_match_top_t. */
524 re_dfastate_t
**array
;
527 /* Store information about the node NODE whose type is OP_CLOSE_SUBEXP. */
532 int str_idx
; /* The position NODE match at. */
534 } re_sub_match_last_t
;
536 /* Store information about the node NODE whose type is OP_OPEN_SUBEXP.
537 And information about the node, whose type is OP_CLOSE_SUBEXP,
538 corresponding to NODE is stored in LASTS. */
544 int next_last_offset
;
546 int alasts
; /* Allocation size of LASTS. */
547 int nlasts
; /* The number of LASTS. */
548 re_sub_match_last_t
**lasts
;
549 } re_sub_match_top_t
;
551 struct re_backref_cache_entry
559 unsigned short int eps_reachable_subexps_map
;
564 /* The string object corresponding to the input string. */
566 #if defined _LIBC || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
571 /* EFLAGS of the argument of regexec. */
573 /* Where the matching ends. */
576 /* The state log used by the matcher. */
577 re_dfastate_t
**state_log
;
579 /* Back reference cache. */
582 struct re_backref_cache_entry
*bkref_ents
;
586 re_sub_match_top_t
**sub_tops
;
587 } re_match_context_t
;
591 re_dfastate_t
**sifted_states
;
592 re_dfastate_t
**limited_states
;
598 struct re_fail_stack_ent_t
603 re_node_set eps_via_nodes
;
606 struct re_fail_stack_t
610 struct re_fail_stack_ent_t
*stack
;
621 re_node_set
*eclosures
;
622 re_node_set
*inveclosures
;
623 struct re_state_table_entry
*state_table
;
624 re_dfastate_t
*init_state
;
625 re_dfastate_t
*init_state_word
;
626 re_dfastate_t
*init_state_nl
;
627 re_dfastate_t
*init_state_begbuf
;
628 bin_tree_t
*str_tree
;
629 bin_tree_storage_t
*str_tree_storage
;
630 re_bitset_ptr_t sb_char
;
631 int str_tree_storage_idx
;
633 /* number of subexpressions `re_nsub' is in regex_t. */
634 unsigned int state_hash_mask
;
637 int nbackref
; /* The number of backreference in this dfa. */
639 /* Bitmap expressing which backreference is used. */
640 unsigned int used_bkref_map
;
641 unsigned int completed_bkref_map
;
643 unsigned int has_plural_match
: 1;
644 /* If this dfa has "multibyte node", which is a backreference or
645 a node which can accept multibyte character or multi character
646 collating element. */
647 unsigned int has_mb_node
: 1;
648 unsigned int is_utf8
: 1;
649 unsigned int map_notascii
: 1;
650 unsigned int word_ops_used
: 1;
658 __libc_lock_define (, lock
)
661 #ifndef RE_NO_INTERNAL_PROTOTYPES
662 static reg_errcode_t
re_node_set_alloc (re_node_set
*set
, int size
) internal_function
;
663 static reg_errcode_t
re_node_set_init_1 (re_node_set
*set
, int elem
) internal_function
;
664 static reg_errcode_t
re_node_set_init_2 (re_node_set
*set
, int elem1
,
665 int elem2
) internal_function
;
666 #define re_node_set_init_empty(set) memset (set, '\0', sizeof (re_node_set))
667 static reg_errcode_t
re_node_set_init_copy (re_node_set
*dest
,
668 const re_node_set
*src
) internal_function
;
669 static reg_errcode_t
re_node_set_add_intersect (re_node_set
*dest
,
670 const re_node_set
*src1
,
671 const re_node_set
*src2
) internal_function
;
672 static reg_errcode_t
re_node_set_init_union (re_node_set
*dest
,
673 const re_node_set
*src1
,
674 const re_node_set
*src2
) internal_function
;
675 static reg_errcode_t
re_node_set_merge (re_node_set
*dest
,
676 const re_node_set
*src
) internal_function
;
677 static int re_node_set_insert (re_node_set
*set
, int elem
) internal_function
;
678 static int re_node_set_insert_last (re_node_set
*set
,
679 int elem
) internal_function
;
680 static int re_node_set_compare (const re_node_set
*set1
,
681 const re_node_set
*set2
)
682 internal_function
__attribute ((pure
));
683 static int re_node_set_contains (const re_node_set
*set
, int elem
)
684 internal_function
__attribute ((pure
));
685 static void re_node_set_remove_at (re_node_set
*set
, int idx
) internal_function
;
686 #define re_node_set_remove(set,id) \
687 (re_node_set_remove_at (set, re_node_set_contains (set, id) - 1))
688 #define re_node_set_empty(p) ((p)->nelem = 0)
689 #define re_node_set_free(set) re_free ((set)->elems)
690 static int re_dfa_add_node (re_dfa_t
*dfa
, re_token_t token
) internal_function
;
691 static re_dfastate_t
*re_acquire_state (reg_errcode_t
*err
, re_dfa_t
*dfa
,
692 const re_node_set
*nodes
) internal_function
;
693 static re_dfastate_t
*re_acquire_state_context (reg_errcode_t
*err
,
695 const re_node_set
*nodes
,
696 unsigned int context
) internal_function
;
697 static void free_state (re_dfastate_t
*state
) internal_function
;
712 bracket_elem_type type
;
722 /* Inline functions for bitset operation. */
724 bitset_not (bitset set
)
727 for (bitset_i
= 0; bitset_i
< BITSET_UINTS
; ++bitset_i
)
728 set
[bitset_i
] = ~set
[bitset_i
];
732 bitset_merge (bitset dest
, const bitset src
)
735 for (bitset_i
= 0; bitset_i
< BITSET_UINTS
; ++bitset_i
)
736 dest
[bitset_i
] |= src
[bitset_i
];
740 bitset_not_merge (bitset dest
, const bitset src
)
743 for (i
= 0; i
< BITSET_UINTS
; ++i
)
748 bitset_mask (bitset dest
, const bitset src
)
751 for (bitset_i
= 0; bitset_i
< BITSET_UINTS
; ++bitset_i
)
752 dest
[bitset_i
] &= src
[bitset_i
];
755 #if defined RE_ENABLE_I18N && !defined RE_NO_INTERNAL_PROTOTYPES
756 /* Inline functions for re_string. */
759 re_string_char_size_at (const re_string_t
*pstr
, int idx
)
762 if (pstr
->mb_cur_max
== 1)
764 for (byte_idx
= 1; idx
+ byte_idx
< pstr
->valid_len
; ++byte_idx
)
765 if (pstr
->wcs
[idx
+ byte_idx
] != WEOF
)
772 re_string_wchar_at (const re_string_t
*pstr
, int idx
)
774 if (pstr
->mb_cur_max
== 1)
775 return (wint_t) pstr
->mbs
[idx
];
776 return (wint_t) pstr
->wcs
[idx
];
781 re_string_elem_size_at (const re_string_t
*pstr
, int idx
)
784 const unsigned char *p
, *extra
;
785 const int32_t *table
, *indirect
;
787 # include <locale/weight.h>
788 uint_fast32_t nrules
= _NL_CURRENT_WORD (LC_COLLATE
, _NL_COLLATE_NRULES
);
792 table
= (const int32_t *) _NL_CURRENT (LC_COLLATE
, _NL_COLLATE_TABLEMB
);
793 extra
= (const unsigned char *)
794 _NL_CURRENT (LC_COLLATE
, _NL_COLLATE_EXTRAMB
);
795 indirect
= (const int32_t *) _NL_CURRENT (LC_COLLATE
,
796 _NL_COLLATE_INDIRECTMB
);
799 return p
- pstr
->mbs
- idx
;
805 #endif /* RE_ENABLE_I18N */
807 #endif /* _REGEX_INTERNAL_H */