git: 8929690a6359 - main - contrib: remove libgnuregex
Kyle Evans
kevans at FreeBSD.org
Sat Jan 2 06:01:03 UTC 2021
The branch main has been updated by kevans:
URL: https://cgit.FreeBSD.org/src/commit/?id=8929690a6359dfba4ed398ef66a4c13e071f10bf
commit 8929690a6359dfba4ed398ef66a4c13e071f10bf
Author: Kyle Evans <kevans at FreeBSD.org>
AuthorDate: 2021-01-02 05:59:21 +0000
Commit: Kyle Evans <kevans at FreeBSD.org>
CommitDate: 2021-01-02 06:00:58 +0000
contrib: remove libgnuregex
This should have been a part of 47d1ad2413da, but it was overlooked. All of
the build bits have been previously removed, and nothing references this
anymore.
---
contrib/libgnuregex/regcomp.c | 3856 ------------------------------
contrib/libgnuregex/regex.c | 76 -
contrib/libgnuregex/regex.h | 582 -----
contrib/libgnuregex/regex_internal.c | 1732 --------------
contrib/libgnuregex/regex_internal.h | 769 ------
contrib/libgnuregex/regexec.c | 4380 ----------------------------------
6 files changed, 11395 deletions(-)
diff --git a/contrib/libgnuregex/regcomp.c b/contrib/libgnuregex/regcomp.c
deleted file mode 100644
index 82b50ad1dd3b..000000000000
--- a/contrib/libgnuregex/regcomp.c
+++ /dev/null
@@ -1,3856 +0,0 @@
-/* Extended regular expression matching and search library.
- Copyright (C) 2002-2007,2009,2010,2011,2012 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Isamu Hasegawa <isamu at yamato.ibm.com>.
-
- 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/>. */
-
-static reg_errcode_t re_compile_internal (regex_t *preg, const char * pattern,
- size_t length, reg_syntax_t syntax);
-static void re_compile_fastmap_iter (regex_t *bufp,
- const re_dfastate_t *init_state,
- char *fastmap);
-static reg_errcode_t init_dfa (re_dfa_t *dfa, size_t pat_len);
-#ifdef RE_ENABLE_I18N
-static void free_charset (re_charset_t *cset);
-#endif /* RE_ENABLE_I18N */
-static void free_workarea_compile (regex_t *preg);
-static reg_errcode_t create_initial_state (re_dfa_t *dfa);
-#ifdef RE_ENABLE_I18N
-static void optimize_utf8 (re_dfa_t *dfa);
-#endif
-static reg_errcode_t analyze (regex_t *preg);
-static reg_errcode_t preorder (bin_tree_t *root,
- reg_errcode_t (fn (void *, bin_tree_t *)),
- void *extra);
-static reg_errcode_t postorder (bin_tree_t *root,
- reg_errcode_t (fn (void *, bin_tree_t *)),
- void *extra);
-static reg_errcode_t optimize_subexps (void *extra, bin_tree_t *node);
-static reg_errcode_t lower_subexps (void *extra, bin_tree_t *node);
-static bin_tree_t *lower_subexp (reg_errcode_t *err, regex_t *preg,
- bin_tree_t *node);
-static reg_errcode_t calc_first (void *extra, bin_tree_t *node);
-static reg_errcode_t calc_next (void *extra, bin_tree_t *node);
-static reg_errcode_t link_nfa_nodes (void *extra, bin_tree_t *node);
-static int duplicate_node (re_dfa_t *dfa, int org_idx, unsigned int constraint);
-static int search_duplicated_node (const re_dfa_t *dfa, int org_node,
- unsigned int constraint);
-static reg_errcode_t calc_eclosure (re_dfa_t *dfa);
-static reg_errcode_t calc_eclosure_iter (re_node_set *new_set, re_dfa_t *dfa,
- int node, int root);
-static reg_errcode_t calc_inveclosure (re_dfa_t *dfa);
-static int fetch_number (re_string_t *input, re_token_t *token,
- reg_syntax_t syntax);
-static int peek_token (re_token_t *token, re_string_t *input,
- reg_syntax_t syntax) internal_function;
-static bin_tree_t *parse (re_string_t *regexp, regex_t *preg,
- reg_syntax_t syntax, reg_errcode_t *err);
-static bin_tree_t *parse_reg_exp (re_string_t *regexp, regex_t *preg,
- re_token_t *token, reg_syntax_t syntax,
- int nest, reg_errcode_t *err);
-static bin_tree_t *parse_branch (re_string_t *regexp, regex_t *preg,
- re_token_t *token, reg_syntax_t syntax,
- int nest, reg_errcode_t *err);
-static bin_tree_t *parse_expression (re_string_t *regexp, regex_t *preg,
- re_token_t *token, reg_syntax_t syntax,
- int nest, reg_errcode_t *err);
-static bin_tree_t *parse_sub_exp (re_string_t *regexp, regex_t *preg,
- re_token_t *token, reg_syntax_t syntax,
- int nest, reg_errcode_t *err);
-static bin_tree_t *parse_dup_op (bin_tree_t *dup_elem, re_string_t *regexp,
- re_dfa_t *dfa, re_token_t *token,
- reg_syntax_t syntax, reg_errcode_t *err);
-static bin_tree_t *parse_bracket_exp (re_string_t *regexp, re_dfa_t *dfa,
- re_token_t *token, reg_syntax_t syntax,
- reg_errcode_t *err);
-static reg_errcode_t parse_bracket_element (bracket_elem_t *elem,
- re_string_t *regexp,
- re_token_t *token, int token_len,
- re_dfa_t *dfa,
- reg_syntax_t syntax,
- int accept_hyphen);
-static reg_errcode_t parse_bracket_symbol (bracket_elem_t *elem,
- re_string_t *regexp,
- re_token_t *token);
-#ifdef RE_ENABLE_I18N
-static reg_errcode_t build_equiv_class (bitset_t sbcset,
- re_charset_t *mbcset,
- int *equiv_class_alloc,
- const unsigned char *name);
-static reg_errcode_t build_charclass (RE_TRANSLATE_TYPE trans,
- bitset_t sbcset,
- re_charset_t *mbcset,
- int *char_class_alloc,
- const unsigned char *class_name,
- reg_syntax_t syntax);
-#else /* not RE_ENABLE_I18N */
-static reg_errcode_t build_equiv_class (bitset_t sbcset,
- const unsigned char *name);
-static reg_errcode_t build_charclass (RE_TRANSLATE_TYPE trans,
- bitset_t sbcset,
- const unsigned char *class_name,
- reg_syntax_t syntax);
-#endif /* not RE_ENABLE_I18N */
-static bin_tree_t *build_charclass_op (re_dfa_t *dfa,
- RE_TRANSLATE_TYPE trans,
- const unsigned char *class_name,
- const unsigned char *extra,
- int non_match, reg_errcode_t *err);
-static bin_tree_t *create_tree (re_dfa_t *dfa,
- bin_tree_t *left, bin_tree_t *right,
- re_token_type_t type);
-static bin_tree_t *create_token_tree (re_dfa_t *dfa,
- bin_tree_t *left, bin_tree_t *right,
- const re_token_t *token);
-static bin_tree_t *duplicate_tree (const bin_tree_t *src, re_dfa_t *dfa);
-static void free_token (re_token_t *node);
-static reg_errcode_t free_tree (void *extra, bin_tree_t *node);
-static reg_errcode_t mark_opt_subexp (void *extra, bin_tree_t *node);
-
-/* This table gives an error message for each of the error codes listed
- in regex.h. Obviously the order here has to be same as there.
- POSIX doesn't require that we do anything for REG_NOERROR,
- but why not be nice? */
-
-const char __re_error_msgid[] attribute_hidden =
- {
-#define REG_NOERROR_IDX 0
- gettext_noop ("Success") /* REG_NOERROR */
- "\0"
-#define REG_NOMATCH_IDX (REG_NOERROR_IDX + sizeof "Success")
- gettext_noop ("No match") /* REG_NOMATCH */
- "\0"
-#define REG_BADPAT_IDX (REG_NOMATCH_IDX + sizeof "No match")
- gettext_noop ("Invalid regular expression") /* REG_BADPAT */
- "\0"
-#define REG_ECOLLATE_IDX (REG_BADPAT_IDX + sizeof "Invalid regular expression")
- gettext_noop ("Invalid collation character") /* REG_ECOLLATE */
- "\0"
-#define REG_ECTYPE_IDX (REG_ECOLLATE_IDX + sizeof "Invalid collation character")
- gettext_noop ("Invalid character class name") /* REG_ECTYPE */
- "\0"
-#define REG_EESCAPE_IDX (REG_ECTYPE_IDX + sizeof "Invalid character class name")
- gettext_noop ("Trailing backslash") /* REG_EESCAPE */
- "\0"
-#define REG_ESUBREG_IDX (REG_EESCAPE_IDX + sizeof "Trailing backslash")
- gettext_noop ("Invalid back reference") /* REG_ESUBREG */
- "\0"
-#define REG_EBRACK_IDX (REG_ESUBREG_IDX + sizeof "Invalid back reference")
- gettext_noop ("Unmatched [ or [^") /* REG_EBRACK */
- "\0"
-#define REG_EPAREN_IDX (REG_EBRACK_IDX + sizeof "Unmatched [ or [^")
- gettext_noop ("Unmatched ( or \\(") /* REG_EPAREN */
- "\0"
-#define REG_EBRACE_IDX (REG_EPAREN_IDX + sizeof "Unmatched ( or \\(")
- gettext_noop ("Unmatched \\{") /* REG_EBRACE */
- "\0"
-#define REG_BADBR_IDX (REG_EBRACE_IDX + sizeof "Unmatched \\{")
- gettext_noop ("Invalid content of \\{\\}") /* REG_BADBR */
- "\0"
-#define REG_ERANGE_IDX (REG_BADBR_IDX + sizeof "Invalid content of \\{\\}")
- gettext_noop ("Invalid range end") /* REG_ERANGE */
- "\0"
-#define REG_ESPACE_IDX (REG_ERANGE_IDX + sizeof "Invalid range end")
- gettext_noop ("Memory exhausted") /* REG_ESPACE */
- "\0"
-#define REG_BADRPT_IDX (REG_ESPACE_IDX + sizeof "Memory exhausted")
- gettext_noop ("Invalid preceding regular expression") /* REG_BADRPT */
- "\0"
-#define REG_EEND_IDX (REG_BADRPT_IDX + sizeof "Invalid preceding regular expression")
- gettext_noop ("Premature end of regular expression") /* REG_EEND */
- "\0"
-#define REG_ESIZE_IDX (REG_EEND_IDX + sizeof "Premature end of regular expression")
- gettext_noop ("Regular expression too big") /* REG_ESIZE */
- "\0"
-#define REG_ERPAREN_IDX (REG_ESIZE_IDX + sizeof "Regular expression too big")
- gettext_noop ("Unmatched ) or \\)") /* REG_ERPAREN */
- };
-
-const size_t __re_error_msgid_idx[] attribute_hidden =
- {
- REG_NOERROR_IDX,
- REG_NOMATCH_IDX,
- REG_BADPAT_IDX,
- REG_ECOLLATE_IDX,
- REG_ECTYPE_IDX,
- REG_EESCAPE_IDX,
- REG_ESUBREG_IDX,
- REG_EBRACK_IDX,
- REG_EPAREN_IDX,
- REG_EBRACE_IDX,
- REG_BADBR_IDX,
- REG_ERANGE_IDX,
- REG_ESPACE_IDX,
- REG_BADRPT_IDX,
- REG_EEND_IDX,
- REG_ESIZE_IDX,
- REG_ERPAREN_IDX
- };
-
-/* Entry points for GNU code. */
-
-/* re_compile_pattern is the GNU regular expression compiler: it
- compiles PATTERN (of length LENGTH) and puts the result in BUFP.
- Returns 0 if the pattern was valid, otherwise an error string.
-
- Assumes the `allocated' (and perhaps `buffer') and `translate' fields
- are set in BUFP on entry. */
-
-const char *
-re_compile_pattern (pattern, length, bufp)
- const char *pattern;
- size_t length;
- struct re_pattern_buffer *bufp;
-{
- reg_errcode_t ret;
-
- /* And GNU code determines whether or not to get register information
- by passing null for the REGS argument to re_match, etc., not by
- setting no_sub, unless RE_NO_SUB is set. */
- bufp->no_sub = !!(re_syntax_options & RE_NO_SUB);
-
- /* Match anchors at newline. */
- bufp->newline_anchor = 1;
-
- ret = re_compile_internal (bufp, pattern, length, re_syntax_options);
-
- if (!ret)
- return NULL;
- return gettext (__re_error_msgid + __re_error_msgid_idx[(int) ret]);
-}
-#ifdef _LIBC
-weak_alias (__re_compile_pattern, re_compile_pattern)
-#endif
-
-/* Set by `re_set_syntax' to the current regexp syntax to recognize. Can
- also be assigned to arbitrarily: each pattern buffer stores its own
- syntax, so it can be changed between regex compilations. */
-/* This has no initializer because initialized variables in Emacs
- become read-only after dumping. */
-reg_syntax_t re_syntax_options;
-
-
-/* Specify the precise syntax of regexps for compilation. This provides
- for compatibility for various utilities which historically have
- different, incompatible syntaxes.
-
- The argument SYNTAX is a bit mask comprised of the various bits
- defined in regex.h. We return the old syntax. */
-
-reg_syntax_t
-re_set_syntax (syntax)
- reg_syntax_t syntax;
-{
- reg_syntax_t ret = re_syntax_options;
-
- re_syntax_options = syntax;
- return ret;
-}
-#ifdef _LIBC
-weak_alias (__re_set_syntax, re_set_syntax)
-#endif
-
-int
-re_compile_fastmap (bufp)
- struct re_pattern_buffer *bufp;
-{
- re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
- char *fastmap = bufp->fastmap;
-
- memset (fastmap, '\0', sizeof (char) * SBC_MAX);
- re_compile_fastmap_iter (bufp, dfa->init_state, fastmap);
- if (dfa->init_state != dfa->init_state_word)
- re_compile_fastmap_iter (bufp, dfa->init_state_word, fastmap);
- if (dfa->init_state != dfa->init_state_nl)
- re_compile_fastmap_iter (bufp, dfa->init_state_nl, fastmap);
- if (dfa->init_state != dfa->init_state_begbuf)
- re_compile_fastmap_iter (bufp, dfa->init_state_begbuf, fastmap);
- bufp->fastmap_accurate = 1;
- return 0;
-}
-#ifdef _LIBC
-weak_alias (__re_compile_fastmap, re_compile_fastmap)
-#endif
-
-static inline void
-__attribute ((always_inline))
-re_set_fastmap (char *fastmap, int icase, int ch)
-{
- fastmap[ch] = 1;
- if (icase)
- fastmap[tolower (ch)] = 1;
-}
-
-/* Helper function for re_compile_fastmap.
- Compile fastmap for the initial_state INIT_STATE. */
-
-static void
-re_compile_fastmap_iter (regex_t *bufp, const re_dfastate_t *init_state,
- char *fastmap)
-{
- re_dfa_t *dfa = (re_dfa_t *) bufp->buffer;
- int node_cnt;
- int icase = (dfa->mb_cur_max == 1 && (bufp->syntax & RE_ICASE));
- for (node_cnt = 0; node_cnt < init_state->nodes.nelem; ++node_cnt)
- {
- int node = init_state->nodes.elems[node_cnt];
- re_token_type_t type = dfa->nodes[node].type;
-
- if (type == CHARACTER)
- {
- re_set_fastmap (fastmap, icase, dfa->nodes[node].opr.c);
-#ifdef RE_ENABLE_I18N
- if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
- {
- unsigned char *buf = alloca (dfa->mb_cur_max), *p;
- wchar_t wc;
- mbstate_t state;
-
- p = buf;
- *p++ = dfa->nodes[node].opr.c;
- while (++node < dfa->nodes_len
- && dfa->nodes[node].type == CHARACTER
- && dfa->nodes[node].mb_partial)
- *p++ = dfa->nodes[node].opr.c;
- memset (&state, '\0', sizeof (state));
- if (__mbrtowc (&wc, (const char *) buf, p - buf,
- &state) == p - buf
- && (__wcrtomb ((char *) buf, towlower (wc), &state)
- != (size_t) -1))
- re_set_fastmap (fastmap, 0, buf[0]);
- }
-#endif
- }
- else if (type == SIMPLE_BRACKET)
- {
- int i, ch;
- for (i = 0, ch = 0; i < BITSET_WORDS; ++i)
- {
- int j;
- bitset_word_t w = dfa->nodes[node].opr.sbcset[i];
- for (j = 0; j < BITSET_WORD_BITS; ++j, ++ch)
- if (w & ((bitset_word_t) 1 << j))
- re_set_fastmap (fastmap, icase, ch);
- }
- }
-#ifdef RE_ENABLE_I18N
- else if (type == COMPLEX_BRACKET)
- {
- re_charset_t *cset = dfa->nodes[node].opr.mbcset;
- int i;
-
-# ifdef _LIBC
- /* See if we have to try all bytes which start multiple collation
- elements.
- e.g. In da_DK, we want to catch 'a' since "aa" is a valid
- collation element, and don't catch 'b' since 'b' is
- the only collation element which starts from 'b' (and
- it is caught by SIMPLE_BRACKET). */
- if (_NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES) != 0
- && (cset->ncoll_syms || cset->nranges))
- {
- const int32_t *table = (const int32_t *)
- _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
- for (i = 0; i < SBC_MAX; ++i)
- if (table[i] < 0)
- re_set_fastmap (fastmap, icase, i);
- }
-# endif /* _LIBC */
-
- /* See if we have to start the match at all multibyte characters,
- i.e. where we would not find an invalid sequence. This only
- applies to multibyte character sets; for single byte character
- sets, the SIMPLE_BRACKET again suffices. */
- if (dfa->mb_cur_max > 1
- && (cset->nchar_classes || cset->non_match || cset->nranges
-# ifdef _LIBC
- || cset->nequiv_classes
-# endif /* _LIBC */
- ))
- {
- unsigned char c = 0;
- do
- {
- mbstate_t mbs;
- memset (&mbs, 0, sizeof (mbs));
- if (__mbrtowc (NULL, (char *) &c, 1, &mbs) == (size_t) -2)
- re_set_fastmap (fastmap, false, (int) c);
- }
- while (++c != 0);
- }
-
- else
- {
- /* ... Else catch all bytes which can start the mbchars. */
- for (i = 0; i < cset->nmbchars; ++i)
- {
- char buf[256];
- mbstate_t state;
- memset (&state, '\0', sizeof (state));
- if (__wcrtomb (buf, cset->mbchars[i], &state) != (size_t) -1)
- re_set_fastmap (fastmap, icase, *(unsigned char *) buf);
- if ((bufp->syntax & RE_ICASE) && dfa->mb_cur_max > 1)
- {
- if (__wcrtomb (buf, towlower (cset->mbchars[i]), &state)
- != (size_t) -1)
- re_set_fastmap (fastmap, false, *(unsigned char *) buf);
- }
- }
- }
- }
-#endif /* RE_ENABLE_I18N */
- else if (type == OP_PERIOD
-#ifdef RE_ENABLE_I18N
- || type == OP_UTF8_PERIOD
-#endif /* RE_ENABLE_I18N */
- || type == END_OF_RE)
- {
- memset (fastmap, '\1', sizeof (char) * SBC_MAX);
- if (type == END_OF_RE)
- bufp->can_be_null = 1;
- return;
- }
- }
-}
-
-/* Entry point for POSIX code. */
-/* regcomp takes a regular expression as a string and compiles it.
-
- PREG is a regex_t *. We do not expect any fields to be initialized,
- since POSIX says we shouldn't. Thus, we set
-
- `buffer' to the compiled pattern;
- `used' to the length of the compiled pattern;
- `syntax' to RE_SYNTAX_POSIX_EXTENDED if the
- REG_EXTENDED bit in CFLAGS is set; otherwise, to
- RE_SYNTAX_POSIX_BASIC;
- `newline_anchor' to REG_NEWLINE being set in CFLAGS;
- `fastmap' to an allocated space for the fastmap;
- `fastmap_accurate' to zero;
- `re_nsub' to the number of subexpressions in PATTERN.
-
- PATTERN is the address of the pattern string.
-
- CFLAGS is a series of bits which affect compilation.
-
- If REG_EXTENDED is set, we use POSIX extended syntax; otherwise, we
- use POSIX basic syntax.
-
- If REG_NEWLINE is set, then . and [^...] don't match newline.
- Also, regexec will try a match beginning after every newline.
-
- If REG_ICASE is set, then we considers upper- and lowercase
- versions of letters to be equivalent when matching.
-
- If REG_NOSUB is set, then when PREG is passed to regexec, that
- routine will report only success or failure, and nothing about the
- registers.
-
- It returns 0 if it succeeds, nonzero if it doesn't. (See regex.h for
- the return codes and their meanings.) */
-
-int
-regcomp (preg, pattern, cflags)
- regex_t *__restrict preg;
- const char *__restrict pattern;
- int cflags;
-{
- reg_errcode_t ret;
- reg_syntax_t syntax = ((cflags & REG_EXTENDED) ? RE_SYNTAX_POSIX_EXTENDED
- : RE_SYNTAX_POSIX_BASIC);
-
- preg->buffer = NULL;
- preg->allocated = 0;
- preg->used = 0;
-
- /* Try to allocate space for the fastmap. */
- preg->fastmap = re_malloc (char, SBC_MAX);
- if (BE (preg->fastmap == NULL, 0))
- return REG_ESPACE;
-
- syntax |= (cflags & REG_ICASE) ? RE_ICASE : 0;
-
- /* If REG_NEWLINE is set, newlines are treated differently. */
- if (cflags & REG_NEWLINE)
- { /* REG_NEWLINE implies neither . nor [^...] match newline. */
- syntax &= ~RE_DOT_NEWLINE;
- syntax |= RE_HAT_LISTS_NOT_NEWLINE;
- /* It also changes the matching behavior. */
- preg->newline_anchor = 1;
- }
- else
- preg->newline_anchor = 0;
- preg->no_sub = !!(cflags & REG_NOSUB);
- preg->translate = NULL;
-
- ret = re_compile_internal (preg, pattern, strlen (pattern), syntax);
-
- /* POSIX doesn't distinguish between an unmatched open-group and an
- unmatched close-group: both are REG_EPAREN. */
- if (ret == REG_ERPAREN)
- ret = REG_EPAREN;
-
- /* We have already checked preg->fastmap != NULL. */
- if (BE (ret == REG_NOERROR, 1))
- /* Compute the fastmap now, since regexec cannot modify the pattern
- buffer. This function never fails in this implementation. */
- (void) re_compile_fastmap (preg);
- else
- {
- /* Some error occurred while compiling the expression. */
- re_free (preg->fastmap);
- preg->fastmap = NULL;
- }
-
- return (int) ret;
-}
-#ifdef _LIBC
-weak_alias (__regcomp, regcomp)
-#endif
-
-/* Returns a message corresponding to an error code, ERRCODE, returned
- from either regcomp or regexec. We don't use PREG here. */
-
-size_t
-regerror (errcode, preg, errbuf, errbuf_size)
- int errcode;
- const regex_t *__restrict preg;
- char *__restrict errbuf;
- size_t errbuf_size;
-{
- const char *msg;
- size_t msg_size;
-
- if (BE (errcode < 0
- || errcode >= (int) (sizeof (__re_error_msgid_idx)
- / sizeof (__re_error_msgid_idx[0])), 0))
- /* Only error codes returned by the rest of the code should be passed
- to this routine. If we are given anything else, or if other regex
- code generates an invalid error code, then the program has a bug.
- Dump core so we can fix it. */
- abort ();
-
- msg = gettext (__re_error_msgid + __re_error_msgid_idx[errcode]);
-
- msg_size = strlen (msg) + 1; /* Includes the null. */
-
- if (BE (errbuf_size != 0, 1))
- {
- if (BE (msg_size > errbuf_size, 0))
- {
-#if defined HAVE_MEMPCPY || defined _LIBC
- *((char *) __mempcpy (errbuf, msg, errbuf_size - 1)) = '\0';
-#else
- memcpy (errbuf, msg, errbuf_size - 1);
- errbuf[errbuf_size - 1] = 0;
-#endif
- }
- else
- memcpy (errbuf, msg, msg_size);
- }
-
- return msg_size;
-}
-#ifdef _LIBC
-weak_alias (__regerror, regerror)
-#endif
-
-
-#ifdef RE_ENABLE_I18N
-/* This static array is used for the map to single-byte characters when
- UTF-8 is used. Otherwise we would allocate memory just to initialize
- it the same all the time. UTF-8 is the preferred encoding so this is
- a worthwhile optimization. */
-static const bitset_t utf8_sb_map =
-{
- /* Set the first 128 bits. */
- [0 ... 0x80 / BITSET_WORD_BITS - 1] = BITSET_WORD_MAX
-};
-#endif
-
-
-static void
-free_dfa_content (re_dfa_t *dfa)
-{
- int i, j;
-
- if (dfa->nodes)
- for (i = 0; i < dfa->nodes_len; ++i)
- free_token (dfa->nodes + i);
- re_free (dfa->nexts);
- for (i = 0; i < dfa->nodes_len; ++i)
- {
- if (dfa->eclosures != NULL)
- re_node_set_free (dfa->eclosures + i);
- if (dfa->inveclosures != NULL)
- re_node_set_free (dfa->inveclosures + i);
- if (dfa->edests != NULL)
- re_node_set_free (dfa->edests + i);
- }
- re_free (dfa->edests);
- re_free (dfa->eclosures);
- re_free (dfa->inveclosures);
- re_free (dfa->nodes);
-
- if (dfa->state_table)
- for (i = 0; i <= dfa->state_hash_mask; ++i)
- {
- struct re_state_table_entry *entry = dfa->state_table + i;
- for (j = 0; j < entry->num; ++j)
- {
- re_dfastate_t *state = entry->array[j];
- free_state (state);
- }
- re_free (entry->array);
- }
- re_free (dfa->state_table);
-#ifdef RE_ENABLE_I18N
- if (dfa->sb_char != utf8_sb_map)
- re_free (dfa->sb_char);
-#endif
- re_free (dfa->subexp_map);
-#ifdef DEBUG
- re_free (dfa->re_str);
-#endif
-
- re_free (dfa);
-}
-
-
-/* Free dynamically allocated space used by PREG. */
-
-void
-regfree (preg)
- regex_t *preg;
-{
- re_dfa_t *dfa = (re_dfa_t *) preg->buffer;
- if (BE (dfa != NULL, 1))
- free_dfa_content (dfa);
- preg->buffer = NULL;
- preg->allocated = 0;
-
- re_free (preg->fastmap);
- preg->fastmap = NULL;
-
- re_free (preg->translate);
- preg->translate = NULL;
-}
-#ifdef _LIBC
-weak_alias (__regfree, regfree)
-#endif
-
-/* Entry points compatible with 4.2 BSD regex library. We don't define
- them unless specifically requested. */
-
-#if defined _REGEX_RE_COMP || defined _LIBC
-
-/* BSD has one and only one pattern buffer. */
-static struct re_pattern_buffer re_comp_buf;
-
-char *
-# ifdef _LIBC
-/* Make these definitions weak in libc, so POSIX programs can redefine
- these names if they don't use our functions, and still use
- regcomp/regexec above without link errors. */
-weak_function
-# endif
-re_comp (s)
- const char *s;
-{
- reg_errcode_t ret;
- char *fastmap;
-
- if (!s)
- {
- if (!re_comp_buf.buffer)
- return gettext ("No previous regular expression");
- return 0;
- }
-
- if (re_comp_buf.buffer)
- {
- fastmap = re_comp_buf.fastmap;
- re_comp_buf.fastmap = NULL;
- __regfree (&re_comp_buf);
- memset (&re_comp_buf, '\0', sizeof (re_comp_buf));
- re_comp_buf.fastmap = fastmap;
- }
-
- if (re_comp_buf.fastmap == NULL)
- {
- re_comp_buf.fastmap = (char *) malloc (SBC_MAX);
- if (re_comp_buf.fastmap == NULL)
- return (char *) gettext (__re_error_msgid
- + __re_error_msgid_idx[(int) REG_ESPACE]);
- }
-
- /* Since `re_exec' always passes NULL for the `regs' argument, we
- don't need to initialize the pattern buffer fields which affect it. */
-
- /* Match anchors at newlines. */
- re_comp_buf.newline_anchor = 1;
-
- ret = re_compile_internal (&re_comp_buf, s, strlen (s), re_syntax_options);
-
- if (!ret)
- return NULL;
-
- /* Yes, we're discarding `const' here if !HAVE_LIBINTL. */
- return (char *) gettext (__re_error_msgid + __re_error_msgid_idx[(int) ret]);
-}
-
-#ifdef _LIBC
-libc_freeres_fn (free_mem)
-{
- __regfree (&re_comp_buf);
-}
-#endif
-
-#endif /* _REGEX_RE_COMP */
-
-/* Internal entry point.
- Compile the regular expression PATTERN, whose length is LENGTH.
- SYNTAX indicate regular expression's syntax. */
-
-static reg_errcode_t
-re_compile_internal (regex_t *preg, const char * pattern, size_t length,
- reg_syntax_t syntax)
-{
- reg_errcode_t err = REG_NOERROR;
- re_dfa_t *dfa;
- re_string_t regexp;
-
- /* Initialize the pattern buffer. */
- preg->fastmap_accurate = 0;
- preg->syntax = syntax;
- preg->not_bol = preg->not_eol = 0;
- preg->used = 0;
- preg->re_nsub = 0;
- preg->can_be_null = 0;
- preg->regs_allocated = REGS_UNALLOCATED;
-
- /* Initialize the dfa. */
- dfa = (re_dfa_t *) preg->buffer;
- if (BE (preg->allocated < sizeof (re_dfa_t), 0))
- {
- /* If zero allocated, but buffer is non-null, try to realloc
- enough space. This loses if buffer's address is bogus, but
- that is the user's responsibility. If ->buffer is NULL this
- is a simple allocation. */
- dfa = re_realloc (preg->buffer, re_dfa_t, 1);
- if (dfa == NULL)
- return REG_ESPACE;
- preg->allocated = sizeof (re_dfa_t);
- preg->buffer = (unsigned char *) dfa;
- }
- preg->used = sizeof (re_dfa_t);
-
- err = init_dfa (dfa, length);
- if (BE (err != REG_NOERROR, 0))
- {
- free_dfa_content (dfa);
- preg->buffer = NULL;
- preg->allocated = 0;
- return err;
- }
-#ifdef DEBUG
- /* Note: length+1 will not overflow since it is checked in init_dfa. */
- dfa->re_str = re_malloc (char, length + 1);
- strncpy (dfa->re_str, pattern, length + 1);
-#endif
-
- __libc_lock_init (dfa->lock);
-
- err = re_string_construct (®exp, pattern, length, preg->translate,
- syntax & RE_ICASE, dfa);
- if (BE (err != REG_NOERROR, 0))
- {
- re_compile_internal_free_return:
- free_workarea_compile (preg);
- re_string_destruct (®exp);
- free_dfa_content (dfa);
- preg->buffer = NULL;
- preg->allocated = 0;
- return err;
- }
-
- /* Parse the regular expression, and build a structure tree. */
- preg->re_nsub = 0;
- dfa->str_tree = parse (®exp, preg, syntax, &err);
- if (BE (dfa->str_tree == NULL, 0))
- goto re_compile_internal_free_return;
-
- /* Analyze the tree and create the nfa. */
- err = analyze (preg);
- if (BE (err != REG_NOERROR, 0))
- goto re_compile_internal_free_return;
-
-#ifdef RE_ENABLE_I18N
- /* If possible, do searching in single byte encoding to speed things up. */
- if (dfa->is_utf8 && !(syntax & RE_ICASE) && preg->translate == NULL)
- optimize_utf8 (dfa);
-#endif
-
- /* Then create the initial state of the dfa. */
- err = create_initial_state (dfa);
-
- /* Release work areas. */
- free_workarea_compile (preg);
- re_string_destruct (®exp);
-
- if (BE (err != REG_NOERROR, 0))
- {
- free_dfa_content (dfa);
- preg->buffer = NULL;
- preg->allocated = 0;
- }
-
- return err;
-}
-
-/* Initialize DFA. We use the length of the regular expression PAT_LEN
- as the initial length of some arrays. */
-
-static reg_errcode_t
-init_dfa (re_dfa_t *dfa, size_t pat_len)
-{
- unsigned int table_size;
-#ifndef _LIBC
- char *codeset_name;
-#endif
-
- memset (dfa, '\0', sizeof (re_dfa_t));
-
- /* Force allocation of str_tree_storage the first time. */
- dfa->str_tree_storage_idx = BIN_TREE_STORAGE_SIZE;
-
- /* Avoid overflows. */
- if (pat_len == SIZE_MAX)
- return REG_ESPACE;
-
- dfa->nodes_alloc = pat_len + 1;
- dfa->nodes = re_malloc (re_token_t, dfa->nodes_alloc);
-
- /* table_size = 2 ^ ceil(log pat_len) */
- for (table_size = 1; ; table_size <<= 1)
- if (table_size > pat_len)
- break;
-
- dfa->state_table = calloc (sizeof (struct re_state_table_entry), table_size);
- dfa->state_hash_mask = table_size - 1;
-
- dfa->mb_cur_max = MB_CUR_MAX;
-#ifdef _LIBC
- if (dfa->mb_cur_max == 6
- && strcmp (_NL_CURRENT (LC_CTYPE, _NL_CTYPE_CODESET_NAME), "UTF-8") == 0)
- dfa->is_utf8 = 1;
- dfa->map_notascii = (_NL_CURRENT_WORD (LC_CTYPE, _NL_CTYPE_MAP_TO_NONASCII)
- != 0);
-#else
-# ifdef HAVE_LANGINFO_CODESET
- codeset_name = nl_langinfo (CODESET);
-# else
- codeset_name = getenv ("LC_ALL");
- if (codeset_name == NULL || codeset_name[0] == '\0')
- codeset_name = getenv ("LC_CTYPE");
- if (codeset_name == NULL || codeset_name[0] == '\0')
- codeset_name = getenv ("LANG");
- if (codeset_name == NULL)
- codeset_name = "";
- else if (strchr (codeset_name, '.') != NULL)
- codeset_name = strchr (codeset_name, '.') + 1;
-# endif
-
- if (strcasecmp (codeset_name, "UTF-8") == 0
- || strcasecmp (codeset_name, "UTF8") == 0)
- dfa->is_utf8 = 1;
-
- /* We check exhaustively in the loop below if this charset is a
- superset of ASCII. */
- dfa->map_notascii = 0;
-#endif
-
-#ifdef RE_ENABLE_I18N
- if (dfa->mb_cur_max > 1)
- {
- if (dfa->is_utf8)
- dfa->sb_char = (re_bitset_ptr_t) utf8_sb_map;
- else
- {
- int i, j, ch;
-
- dfa->sb_char = (re_bitset_ptr_t) calloc (sizeof (bitset_t), 1);
- if (BE (dfa->sb_char == NULL, 0))
- return REG_ESPACE;
-
- /* Set the bits corresponding to single byte chars. */
- for (i = 0, ch = 0; i < BITSET_WORDS; ++i)
- for (j = 0; j < BITSET_WORD_BITS; ++j, ++ch)
- {
- wint_t wch = __btowc (ch);
- if (wch != WEOF)
- dfa->sb_char[i] |= (bitset_word_t) 1 << j;
-# ifndef _LIBC
- if (isascii (ch) && wch != ch)
- dfa->map_notascii = 1;
-# endif
- }
- }
- }
-#endif
-
- if (BE (dfa->nodes == NULL || dfa->state_table == NULL, 0))
- return REG_ESPACE;
- return REG_NOERROR;
-}
-
-/* Initialize WORD_CHAR table, which indicate which character is
- "word". In this case "word" means that it is the word construction
- character used by some operators like "\<", "\>", etc. */
-
-static void
-internal_function
-init_word_char (re_dfa_t *dfa)
-{
- dfa->word_ops_used = 1;
- int i = 0;
- int ch = 0;
- if (BE (dfa->map_notascii == 0, 1))
- {
- /* Avoid uint32_t and uint64_t as some non-GCC platforms lack
- them, an issue when this code is used in Gnulib. */
- bitset_word_t bits0 = 0x00000000;
- bitset_word_t bits1 = 0x03ff0000;
- bitset_word_t bits2 = 0x87fffffe;
- bitset_word_t bits3 = 0x07fffffe;
-
- if (BITSET_WORD_BITS == 64)
- {
- /* Pacify gcc -Woverflow on 32-bit platformns. */
- dfa->word_char[0] = bits1 << 31 << 1 | bits0;
- dfa->word_char[1] = bits3 << 31 << 1 | bits2;
- i = 2;
- }
- else if (BITSET_WORD_BITS == 32)
- {
- dfa->word_char[0] = bits0;
- dfa->word_char[1] = bits1;
- dfa->word_char[2] = bits2;
- dfa->word_char[3] = bits3;
- i = 4;
- }
- else
- goto general_case;
- ch = 128;
*** 10468 LINES SKIPPED ***
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