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* posix/regex_internal.c (re_string_skip_chars): Also return the last

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wide character.
	(re_string_reconstruct): Calculate the context by itself when the
	offset points out of the valid range.
	(re_string_context_at): Use wide character when MB_CUR_MAX > 1.
	* posix/regex_internal.h (WIDE_NEWLINE_CHAR): New macro.
	(IS_WIDE_WORD_CHAR): New macro.
	(IS_WIDE_NEWLINE): New macro.
This commit is contained in:
Roland McGrath 2002-11-13 04:00:16 +00:00
parent 43317e8e78
commit 1843975c42
3 changed files with 68 additions and 12 deletions
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11
ChangeLog
View File

@ -1,3 +1,14 @@
2002-11-11 Isamu Hasegawa <isamu@yamato.ibm.com>
* posix/regex_internal.c (re_string_skip_chars): Also return the last
wide character.
(re_string_reconstruct): Calculate the context by itself when the
offset points out of the valid range.
(re_string_context_at): Use wide character when MB_CUR_MAX > 1.
* posix/regex_internal.h (WIDE_NEWLINE_CHAR): New macro.
(IS_WIDE_WORD_CHAR): New macro.
(IS_WIDE_NEWLINE): New macro.
2002-11-12 Andreas Jaeger <aj@suse.de>
* sysdeps/x86_64/strchr.S: Don't use one register for two

66
posix/regex_internal.c
View File

@ -66,7 +66,8 @@ static void re_string_construct_common (const char *str, int len,
re_string_t *pstr,
RE_TRANSLATE_TYPE trans, int icase);
#ifdef RE_ENABLE_I18N
static int re_string_skip_chars (re_string_t *pstr, int new_raw_idx);
static int re_string_skip_chars (re_string_t *pstr, int new_raw_idx,
wint_t *last_wc);
#endif /* RE_ENABLE_I18N */
static re_dfastate_t *create_newstate_common (re_dfa_t *dfa,
const re_node_set *nodes,
@ -338,21 +339,24 @@ build_wcs_upper_buffer (pstr)
Return the index. */
static int
re_string_skip_chars (pstr, new_raw_idx)
re_string_skip_chars (pstr, new_raw_idx, last_wc)
re_string_t *pstr;
int new_raw_idx;
wint_t *last_wc;
{
mbstate_t prev_st;
int rawbuf_idx, mbclen;
wchar_t wc = 0;
/* Skip the characters which are not necessary to check. */
for (rawbuf_idx = pstr->raw_mbs_idx + pstr->valid_len;
rawbuf_idx < new_raw_idx;)
{
int remain_len = pstr->len - rawbuf_idx;
int remain_len;
remain_len = pstr->len - rawbuf_idx;
prev_st = pstr->cur_state;
mbclen = mbrlen ((const char *) pstr->raw_mbs + rawbuf_idx, remain_len,
&pstr->cur_state);
mbclen = mbrtowc (&wc, (const char *) pstr->raw_mbs + rawbuf_idx,
remain_len, &pstr->cur_state);
if (BE (mbclen == (size_t) -2 || mbclen == (size_t) -1 || mbclen == 0, 0))
{
/* We treat these cases as a singlebyte character. */
@ -362,6 +366,7 @@ re_string_skip_chars (pstr, new_raw_idx)
/* Then proceed the next character. */
rawbuf_idx += mbclen;
}
*last_wc = (wint_t) wc;
return rawbuf_idx;
}
#endif /* RE_ENABLE_I18N */
@ -441,12 +446,12 @@ re_string_reconstruct (pstr, idx, eflags, newline)
if (offset != 0)
{
pstr->tip_context = re_string_context_at (pstr, offset - 1, eflags,
newline);
/* Are the characters which are already checked remain? */
if (offset < pstr->valid_len)
{
/* Yes, move them to the front of the buffer. */
pstr->tip_context = re_string_context_at (pstr, offset - 1, eflags,
newline);
#ifdef RE_ENABLE_I18N
if (MB_CUR_MAX > 1)
memmove (pstr->wcs, pstr->wcs + offset,
@ -471,11 +476,26 @@ re_string_reconstruct (pstr, idx, eflags, newline)
if (MB_CUR_MAX > 1)
{
int wcs_idx;
pstr->valid_len = re_string_skip_chars (pstr, idx) - idx;
wint_t wc;
pstr->valid_len = re_string_skip_chars (pstr, idx, &wc) - idx;
for (wcs_idx = 0; wcs_idx < pstr->valid_len; ++wcs_idx)
pstr->wcs[wcs_idx] = WEOF;
if (pstr->trans && wc <= 0xff)
wc = pstr->trans[wc];
pstr->tip_context = (IS_WIDE_WORD_CHAR (wc) ? CONTEXT_WORD
: ((newline && IS_WIDE_NEWLINE (wc))
? CONTEXT_NEWLINE : 0));
}
else
#endif /* RE_ENABLE_I18N */
{
int c = pstr->raw_mbs[pstr->raw_mbs_idx + offset - 1];
if (pstr->trans)
c = pstr->trans[c];
pstr->tip_context = (IS_WORD_CHAR (c) ? CONTEXT_WORD
: ((newline && IS_NEWLINE (c))
? CONTEXT_NEWLINE : 0));
}
}
if (!MBS_CASE_ALLOCATED (pstr))
{
@ -542,10 +562,32 @@ re_string_context_at (input, idx, eflags, newline_anchor)
return ((eflags & REG_NOTEOL) ? CONTEXT_ENDBUF
: CONTEXT_NEWLINE | CONTEXT_ENDBUF);
}
c = re_string_byte_at (input, idx);
if (IS_WORD_CHAR (c))
return CONTEXT_WORD;
return (newline_anchor && IS_NEWLINE (c)) ? CONTEXT_NEWLINE : 0;
if (MB_CUR_MAX == 1)
{
c = re_string_byte_at (input, idx);
if (IS_WORD_CHAR (c))
return CONTEXT_WORD;
return (newline_anchor && IS_NEWLINE (c)) ? CONTEXT_NEWLINE : 0;
}
else
{
wint_t wc;
int wc_idx = idx;
while(input->wcs[wc_idx] == WEOF)
{
#ifdef DEBUG
/* It must not happen. */
assert (wc_idx >= 0);
#endif
--wc_idx;
if (wc_idx < 0)
return input->tip_context;
}
wc = input->wcs[wc_idx];
if (IS_WIDE_WORD_CHAR (wc))
return CONTEXT_WORD;
return (newline_anchor && IS_WIDE_NEWLINE (wc)) ? CONTEXT_NEWLINE : 0;
}
}
/* Functions for set operation. */

3
posix/regex_internal.h
View File

@ -30,6 +30,7 @@
/* The character which represents newline. */
#define NEWLINE_CHAR '\n'
#define WIDE_NEWLINE_CHAR L'\n'
/* Rename to standard API for using out of glibc. */
#ifndef _LIBC
@ -349,6 +350,8 @@ typedef struct bin_tree_t bin_tree_t;
#define IS_WORD_CHAR(ch) (isalnum (ch) || (ch) == '_')
#define IS_NEWLINE(ch) ((ch) == NEWLINE_CHAR)
#define IS_WIDE_WORD_CHAR(ch) (iswalnum (ch) || (ch) == L'_')
#define IS_WIDE_NEWLINE(ch) ((ch) == WIDE_NEWLINE_CHAR)
#define NOT_SATISFY_PREV_CONSTRAINT(constraint,context) \
((((constraint) & PREV_WORD_CONSTRAINT) && !IS_WORD_CONTEXT (context)) \