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Diffstat (limited to 'thirdparty/pcre2/src/pcre2_match.c')
-rw-r--r--thirdparty/pcre2/src/pcre2_match.c170
1 files changed, 130 insertions, 40 deletions
diff --git a/thirdparty/pcre2/src/pcre2_match.c b/thirdparty/pcre2/src/pcre2_match.c
index 48e7b9dbb2..e3f78c2ca3 100644
--- a/thirdparty/pcre2/src/pcre2_match.c
+++ b/thirdparty/pcre2/src/pcre2_match.c
@@ -7,7 +7,7 @@ and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Original API code Copyright (c) 1997-2012 University of Cambridge
- New API code Copyright (c) 2015-2019 University of Cambridge
+ New API code Copyright (c) 2015-2020 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
@@ -381,8 +381,12 @@ length = Fovector[offset+1] - Fovector[offset];
if (caseless)
{
#if defined SUPPORT_UNICODE
- if ((mb->poptions & PCRE2_UTF) != 0)
+ BOOL utf = (mb->poptions & PCRE2_UTF) != 0;
+
+ if (utf || (mb->poptions & PCRE2_UCP) != 0)
{
+ PCRE2_SPTR endptr = p + length;
+
/* Match characters up to the end of the reference. NOTE: the number of
code units matched may differ, because in UTF-8 there are some characters
whose upper and lower case codes have different numbers of bytes. For
@@ -390,16 +394,25 @@ if (caseless)
bytes in UTF-8); a sequence of 3 of the former uses 6 bytes, as does a
sequence of two of the latter. It is important, therefore, to check the
length along the reference, not along the subject (earlier code did this
- wrong). */
+ wrong). UCP without uses Unicode properties but without UTF encoding. */
- PCRE2_SPTR endptr = p + length;
while (p < endptr)
{
uint32_t c, d;
const ucd_record *ur;
if (eptr >= mb->end_subject) return 1; /* Partial match */
- GETCHARINC(c, eptr);
- GETCHARINC(d, p);
+
+ if (utf)
+ {
+ GETCHARINC(c, eptr);
+ GETCHARINC(d, p);
+ }
+ else
+ {
+ c = *eptr++;
+ d = *p++;
+ }
+
ur = GET_UCD(d);
if (c != d && c != (uint32_t)((int)d + ur->other_case))
{
@@ -415,7 +428,7 @@ if (caseless)
else
#endif
- /* Not in UTF mode */
+ /* Not in UTF or UCP mode */
{
for (; length > 0; length--)
{
@@ -432,7 +445,8 @@ if (caseless)
}
/* In the caseful case, we can just compare the code units, whether or not we
-are in UTF mode. When partial matching, we have to do this unit-by-unit. */
+are in UTF and/or UCP mode. When partial matching, we have to do this unit by
+unit. */
else
{
@@ -574,8 +588,8 @@ match(PCRE2_SPTR start_eptr, PCRE2_SPTR start_ecode, PCRE2_SIZE *ovector,
heapframe *F; /* Current frame pointer */
heapframe *N = NULL; /* Temporary frame pointers */
heapframe *P = NULL;
-heapframe *assert_accept_frame; /* For passing back the frame with captures */
-PCRE2_SIZE frame_copy_size; /* Amount to copy when creating a new frame */
+heapframe *assert_accept_frame = NULL; /* For passing back a frame with captures */
+PCRE2_SIZE frame_copy_size; /* Amount to copy when creating a new frame */
/* Local variables that do not need to be preserved over calls to RRMATCH(). */
@@ -598,12 +612,13 @@ BOOL condition; /* Used in conditional groups */
BOOL cur_is_word; /* Used in "word" tests */
BOOL prev_is_word; /* Used in "word" tests */
-/* UTF flag */
+/* UTF and UCP flags */
#ifdef SUPPORT_UNICODE
BOOL utf = (mb->poptions & PCRE2_UTF) != 0;
+BOOL ucp = (mb->poptions & PCRE2_UCP) != 0;
#else
-BOOL utf = FALSE;
+BOOL utf = FALSE; /* Required for convenience even when no Unicode support */
#endif
/* This is the length of the last part of a backtracking frame that must be
@@ -928,6 +943,7 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
}
else
#endif
+
/* Not UTF mode */
{
if (mb->end_subject - Feptr < 1)
@@ -987,10 +1003,30 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
if (dc != fc && dc != UCD_OTHERCASE(fc)) RRETURN(MATCH_NOMATCH);
}
}
+
+ /* If UCP is set without UTF we must do the same as above, but with one
+ character per code unit. */
+
+ else if (ucp)
+ {
+ uint32_t cc = UCHAR21(Feptr);
+ fc = Fecode[1];
+ if (fc < 128)
+ {
+ if (mb->lcc[fc] != TABLE_GET(cc, mb->lcc, cc)) RRETURN(MATCH_NOMATCH);
+ }
+ else
+ {
+ if (cc != fc && cc != UCD_OTHERCASE(fc)) RRETURN(MATCH_NOMATCH);
+ }
+ Feptr++;
+ Fecode += 2;
+ }
+
else
#endif /* SUPPORT_UNICODE */
- /* Not UTF mode; use the table for characters < 256. */
+ /* Not UTF or UCP mode; use the table for characters < 256. */
{
if (TABLE_GET(Fecode[1], mb->lcc, Fecode[1])
!= TABLE_GET(*Feptr, mb->lcc, *Feptr)) RRETURN(MATCH_NOMATCH);
@@ -1010,6 +1046,7 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
SCHECK_PARTIAL();
RRETURN(MATCH_NOMATCH);
}
+
#ifdef SUPPORT_UNICODE
if (utf)
{
@@ -1026,15 +1063,42 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
if (ch > 127)
ch = UCD_OTHERCASE(ch);
else
- ch = TABLE_GET(ch, mb->fcc, ch);
+ ch = (mb->fcc)[ch];
+ if (ch == fc) RRETURN(MATCH_NOMATCH);
+ }
+ }
+
+ /* UCP without UTF is as above, but with one character per code unit. */
+
+ else if (ucp)
+ {
+ uint32_t ch;
+ fc = UCHAR21INC(Feptr);
+ ch = Fecode[1];
+ Fecode += 2;
+
+ if (ch == fc)
+ {
+ RRETURN(MATCH_NOMATCH); /* Caseful match */
+ }
+ else if (Fop == OP_NOTI) /* If caseless */
+ {
+ if (ch > 127)
+ ch = UCD_OTHERCASE(ch);
+ else
+ ch = (mb->fcc)[ch];
if (ch == fc) RRETURN(MATCH_NOMATCH);
}
}
+
else
#endif /* SUPPORT_UNICODE */
+
+ /* Neither UTF nor UCP is set */
+
{
uint32_t ch = Fecode[1];
- fc = *Feptr++;
+ fc = UCHAR21INC(Feptr);
if (ch == fc || (Fop == OP_NOTI && TABLE_GET(ch, mb->fcc, ch) == fc))
RRETURN(MATCH_NOMATCH);
Fecode += 2;
@@ -1244,7 +1308,7 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
#endif /* SUPPORT_UNICODE */
/* When not in UTF mode, load a single-code-unit character. Then proceed as
- above. */
+ above, using Unicode casing if either UTF or UCP is set. */
Lc = *Fecode++;
@@ -1253,11 +1317,15 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
if (Fop >= OP_STARI)
{
#if PCRE2_CODE_UNIT_WIDTH == 8
- /* Lc must be < 128 in UTF-8 mode. */
+#ifdef SUPPORT_UNICODE
+ if (ucp && !utf && Lc > 127) Loc = UCD_OTHERCASE(Lc);
+ else
+#endif /* SUPPORT_UNICODE */
+ /* Lc will be < 128 in UTF-8 mode. */
Loc = mb->fcc[Lc];
#else /* 16-bit & 32-bit */
#ifdef SUPPORT_UNICODE
- if (utf && Lc > 127) Loc = UCD_OTHERCASE(Lc);
+ if ((utf || ucp) && Lc > 127) Loc = UCD_OTHERCASE(Lc);
else
#endif /* SUPPORT_UNICODE */
Loc = TABLE_GET(Lc, mb->fcc, Lc);
@@ -1490,7 +1558,7 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
if (Fop >= OP_NOTSTARI) /* Caseless */
{
#ifdef SUPPORT_UNICODE
- if (utf && Lc > 127)
+ if ((utf || ucp) && Lc > 127)
Loc = UCD_OTHERCASE(Lc);
else
#endif /* SUPPORT_UNICODE */
@@ -6045,11 +6113,10 @@ BOOL firstline;
BOOL has_first_cu = FALSE;
BOOL has_req_cu = FALSE;
BOOL startline;
-BOOL utf;
#if PCRE2_CODE_UNIT_WIDTH == 8
-BOOL memchr_not_found_first_cu = FALSE;
-BOOL memchr_not_found_first_cu2 = FALSE;
+BOOL memchr_not_found_first_cu;
+BOOL memchr_not_found_first_cu2;
#endif
PCRE2_UCHAR first_cu = 0;
@@ -6069,13 +6136,19 @@ PCRE2_SPTR match_partial;
BOOL use_jit;
#endif
+/* This flag is needed even when Unicode is not supported for convenience
+(it is used by the IS_NEWLINE macro). */
+
+BOOL utf = FALSE;
+
#ifdef SUPPORT_UNICODE
+BOOL ucp = FALSE;
BOOL allow_invalid;
uint32_t fragment_options = 0;
#ifdef SUPPORT_JIT
BOOL jit_checked_utf = FALSE;
#endif
-#endif
+#endif /* SUPPORT_UNICODE */
PCRE2_SIZE frame_size;
@@ -6091,7 +6164,8 @@ proves to be too small, it is replaced by a larger one on the heap. To get a
vector of the size required that is aligned for pointers, allocate it as a
vector of pointers. */
-PCRE2_SPTR stack_frames_vector[START_FRAMES_SIZE/sizeof(PCRE2_SPTR)];
+PCRE2_SPTR stack_frames_vector[START_FRAMES_SIZE/sizeof(PCRE2_SPTR)]
+ PCRE2_KEEP_UNINITIALIZED;
mb->stack_frames = (heapframe *)stack_frames_vector;
/* A length equal to PCRE2_ZERO_TERMINATED implies a zero-terminated
@@ -6147,12 +6221,13 @@ use_jit = (re->executable_jit != NULL &&
(options & ~PUBLIC_JIT_MATCH_OPTIONS) == 0);
#endif
-/* Initialize UTF parameters. */
+/* Initialize UTF/UCP parameters. */
-utf = (re->overall_options & PCRE2_UTF) != 0;
#ifdef SUPPORT_UNICODE
+utf = (re->overall_options & PCRE2_UTF) != 0;
allow_invalid = (re->overall_options & PCRE2_MATCH_INVALID_UTF) != 0;
-#endif
+ucp = (re->overall_options & PCRE2_UCP) != 0;
+#endif /* SUPPORT_UNICODE */
/* Convert the partial matching flags into an integer. */
@@ -6589,9 +6664,13 @@ if ((re->flags & PCRE2_FIRSTSET) != 0)
if ((re->flags & PCRE2_FIRSTCASELESS) != 0)
{
first_cu2 = TABLE_GET(first_cu, mb->fcc, first_cu);
-#if defined SUPPORT_UNICODE && PCRE2_CODE_UNIT_WIDTH != 8
- if (utf && first_cu > 127) first_cu2 = UCD_OTHERCASE(first_cu);
+#ifdef SUPPORT_UNICODE
+#if PCRE2_CODE_UNIT_WIDTH == 8
+ if (first_cu > 127 && ucp && !utf) first_cu2 = UCD_OTHERCASE(first_cu);
+#else
+ if (first_cu > 127 && (utf || ucp)) first_cu2 = UCD_OTHERCASE(first_cu);
#endif
+#endif /* SUPPORT_UNICODE */
}
}
else
@@ -6607,9 +6686,13 @@ if ((re->flags & PCRE2_LASTSET) != 0)
if ((re->flags & PCRE2_LASTCASELESS) != 0)
{
req_cu2 = TABLE_GET(req_cu, mb->fcc, req_cu);
-#if defined SUPPORT_UNICODE && PCRE2_CODE_UNIT_WIDTH != 8
- if (utf && req_cu > 127) req_cu2 = UCD_OTHERCASE(req_cu);
+#ifdef SUPPORT_UNICODE
+#if PCRE2_CODE_UNIT_WIDTH == 8
+ if (req_cu > 127 && ucp && !utf) req_cu2 = UCD_OTHERCASE(req_cu);
+#else
+ if (req_cu > 127 && (utf || ucp)) req_cu2 = UCD_OTHERCASE(req_cu);
#endif
+#endif /* SUPPORT_UNICODE */
}
}
@@ -6626,6 +6709,11 @@ FRAGMENT_RESTART:
start_partial = match_partial = NULL;
mb->hitend = FALSE;
+#if PCRE2_CODE_UNIT_WIDTH == 8
+memchr_not_found_first_cu = FALSE;
+memchr_not_found_first_cu2 = FALSE;
+#endif
+
for(;;)
{
PCRE2_SPTR new_start_match;
@@ -6756,15 +6844,16 @@ for(;;)
#endif
}
- /* If we can't find the required code unit, having reached the true end
- of the subject, break the bumpalong loop, to force a match failure,
- except when doing partial matching, when we let the next cycle run at
- the end of the subject. To see why, consider the pattern /(?<=abc)def/,
- which partially matches "abc", even though the string does not contain
- the starting character "d". If we have not reached the true end of the
- subject (PCRE2_FIRSTLINE caused end_subject to be temporarily modified)
- we also let the cycle run, because the matching string is legitimately
- allowed to start with the first code unit of a newline. */
+ /* If we can't find the required first code unit, having reached the
+ true end of the subject, break the bumpalong loop, to force a match
+ failure, except when doing partial matching, when we let the next cycle
+ run at the end of the subject. To see why, consider the pattern
+ /(?<=abc)def/, which partially matches "abc", even though the string
+ does not contain the starting character "d". If we have not reached the
+ true end of the subject (PCRE2_FIRSTLINE caused end_subject to be
+ temporarily modified) we also let the cycle run, because the matching
+ string is legitimately allowed to start with the first code unit of a
+ newline. */
if (mb->partial == 0 && start_match >= mb->end_subject)
{
@@ -7103,6 +7192,7 @@ if (utf && end_subject != true_end_subject &&
starting code units in 8-bit and 16-bit modes. */
start_match = end_subject + 1;
+
#if PCRE2_CODE_UNIT_WIDTH != 32
while (start_match < true_end_subject && NOT_FIRSTCU(*start_match))
start_match++;
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 14:43:16 +0000