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i-bash/lib/glob/sm_loop.c
Chet Ramey a0c0a00fc4 Bash-4.4 distribution sources and documentation
2016-09-15 16:59:08 -04:00

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/* Copyright (C) 1991-2011 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Bash 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with Bash. If not, see <http://www.gnu.org/licenses/>.
*/
int FCT __P((CHAR *, CHAR *, int));
static int GMATCH __P((CHAR *, CHAR *, CHAR *, CHAR *, int));
static CHAR *PARSE_COLLSYM __P((CHAR *, INT *));
static CHAR *BRACKMATCH __P((CHAR *, U_CHAR, int));
static int EXTMATCH __P((INT, CHAR *, CHAR *, CHAR *, CHAR *, int));
/*static*/ CHAR *PATSCAN __P((CHAR *, CHAR *, INT));
int
FCT (pattern, string, flags)
CHAR *pattern;
CHAR *string;
int flags;
{
CHAR *se, *pe;
if (string == 0 || pattern == 0)
return FNM_NOMATCH;
se = string + STRLEN ((XCHAR *)string);
pe = pattern + STRLEN ((XCHAR *)pattern);
return (GMATCH (string, se, pattern, pe, flags));
}
/* Match STRING against the filename pattern PATTERN, returning zero if
it matches, FNM_NOMATCH if not. */
static int
GMATCH (string, se, pattern, pe, flags)
CHAR *string, *se;
CHAR *pattern, *pe;
int flags;
{
CHAR *p, *n; /* pattern, string */
INT c; /* current pattern character - XXX U_CHAR? */
INT sc; /* current string character - XXX U_CHAR? */
p = pattern;
n = string;
if (string == 0 || pattern == 0)
return FNM_NOMATCH;
#if DEBUG_MATCHING
fprintf(stderr, "gmatch: string = %s; se = %s\n", string, se);
fprintf(stderr, "gmatch: pattern = %s; pe = %s\n", pattern, pe);
#endif
while (p < pe)
{
c = *p++;
c = FOLD (c);
sc = n < se ? *n : '\0';
#ifdef EXTENDED_GLOB
/* EXTMATCH () will handle recursively calling GMATCH, so we can
just return what EXTMATCH() returns. */
if ((flags & FNM_EXTMATCH) && *p == L('(') &&
(c == L('+') || c == L('*') || c == L('?') || c == L('@') || c == L('!'))) /* ) */
{
int lflags;
/* If we're not matching the start of the string, we're not
concerned about the special cases for matching `.' */
lflags = (n == string) ? flags : (flags & ~FNM_PERIOD);
return (EXTMATCH (c, n, se, p, pe, lflags));
}
#endif /* EXTENDED_GLOB */
switch (c)
{
case L('?'): /* Match single character */
if (sc == '\0')
return FNM_NOMATCH;
else if ((flags & FNM_PATHNAME) && sc == L('/'))
/* If we are matching a pathname, `?' can never match a `/'. */
return FNM_NOMATCH;
else if ((flags & FNM_PERIOD) && sc == L('.') &&
(n == string || ((flags & FNM_PATHNAME) && n[-1] == L('/'))))
/* `?' cannot match a `.' if it is the first character of the
string or if it is the first character following a slash and
we are matching a pathname. */
return FNM_NOMATCH;
break;
case L('\\'): /* backslash escape removes special meaning */
if (p == pe)
return FNM_NOMATCH;
if ((flags & FNM_NOESCAPE) == 0)
{
c = *p++;
/* A trailing `\' cannot match. */
if (p > pe)
return FNM_NOMATCH;
c = FOLD (c);
}
if (FOLD (sc) != (U_CHAR)c)
return FNM_NOMATCH;
break;
case '*': /* Match zero or more characters */
if ((flags & FNM_PERIOD) && sc == L('.') &&
(n == string || ((flags & FNM_PATHNAME) && n[-1] == L('/'))))
/* `*' cannot match a `.' if it is the first character of the
string or if it is the first character following a slash and
we are matching a pathname. */
return FNM_NOMATCH;
if (p == pe)
return 0;
/* Collapse multiple consecutive `*' and `?', but make sure that
one character of the string is consumed for each `?'. */
for (c = *p++; (c == L('?') || c == L('*')); c = *p++)
{
if ((flags & FNM_PATHNAME) && sc == L('/'))
/* A slash does not match a wildcard under FNM_PATHNAME. */
return FNM_NOMATCH;
#ifdef EXTENDED_GLOB
else if ((flags & FNM_EXTMATCH) && c == L('?') && *p == L('(')) /* ) */
{
CHAR *newn;
#if 0
for (newn = n; newn < se; ++newn)
{
if (EXTMATCH (c, newn, se, p, pe, flags) == 0)
return (0);
}
#else
/* We can match 0 or 1 times. If we match, return success */
if (EXTMATCH (c, n, se, p, pe, flags) == 0)
return (0);
#endif
/* We didn't match the extended glob pattern, but
that's OK, since we can match 0 or 1 occurrences.
We need to skip the glob pattern and see if we
match the rest of the string. */
newn = PATSCAN (p + 1, pe, 0);
/* If NEWN is 0, we have an ill-formed pattern. */
p = newn ? newn : pe;
}
#endif
else if (c == L('?'))
{
if (sc == L('\0'))
return FNM_NOMATCH;
/* One character of the string is consumed in matching
this ? wildcard, so *??? won't match if there are
fewer than three characters. */
n++;
sc = n < se ? *n : '\0';
}
#ifdef EXTENDED_GLOB
/* Handle ******(patlist) */
if ((flags & FNM_EXTMATCH) && c == L('*') && *p == L('(')) /*)*/
{
CHAR *newn;
/* We need to check whether or not the extended glob
pattern matches the remainder of the string.
If it does, we match the entire pattern. */
for (newn = n; newn < se; ++newn)
{
if (EXTMATCH (c, newn, se, p, pe, flags) == 0)
return (0);
}
/* We didn't match the extended glob pattern, but
that's OK, since we can match 0 or more occurrences.
We need to skip the glob pattern and see if we
match the rest of the string. */
newn = PATSCAN (p + 1, pe, 0);
/* If NEWN is 0, we have an ill-formed pattern. */
p = newn ? newn : pe;
}
#endif
if (p == pe)
break;
}
/* The wildcards are the last element of the pattern. The name
cannot match completely if we are looking for a pathname and
it contains another slash, unless FNM_LEADING_DIR is set. */
if (c == L('\0'))
{
int r = (flags & FNM_PATHNAME) == 0 ? 0 : FNM_NOMATCH;
if (flags & FNM_PATHNAME)
{
if (flags & FNM_LEADING_DIR)
r = 0;
else if (MEMCHR (n, L('/'), se - n) == NULL)
r = 0;
}
return r;
}
/* If we've hit the end of the pattern and the last character of
the pattern was handled by the loop above, we've succeeded.
Otherwise, we need to match that last character. */
if (p == pe && (c == L('?') || c == L('*')))
return (0);
/* If we've hit the end of the string and the rest of the pattern
is something that matches the empty string, we can succeed. */
#if defined (EXTENDED_GLOB)
if (n == se && ((flags & FNM_EXTMATCH) && (c == L('!') || c == L('?')) && *p == L('(')))
{
--p;
if (EXTMATCH (c, n, se, p, pe, flags) == 0)
return (c == L('!') ? FNM_NOMATCH : 0);
return (c == L('!') ? 0 : FNM_NOMATCH);
}
#endif
/* If we stop at a slash in the pattern and we are looking for a
pathname ([star]/foo), then consume enough of the string to stop
at any slash and then try to match the rest of the pattern. If
the string doesn't contain a slash, fail */
if (c == L('/') && (flags & FNM_PATHNAME))
{
while (n < se && *n != L('/'))
++n;
if (n < se && *n == L('/') && (GMATCH (n+1, se, p, pe, flags) == 0))
return 0;
return FNM_NOMATCH; /* XXX */
}
/* General case, use recursion. */
{
U_CHAR c1;
const CHAR *endp;
endp = MEMCHR (n, (flags & FNM_PATHNAME) ? L('/') : L('\0'), se - n);
if (endp == 0)
endp = se;
c1 = ((flags & FNM_NOESCAPE) == 0 && c == L('\\')) ? *p : c;
c1 = FOLD (c1);
for (--p; n < endp; ++n)
{
/* Only call strmatch if the first character indicates a
possible match. We can check the first character if
we're not doing an extended glob match. */
if ((flags & FNM_EXTMATCH) == 0 && c != L('[') && FOLD (*n) != c1) /*]*/
continue;
/* If we're doing an extended glob match and the pattern is not
one of the extended glob patterns, we can check the first
character. */
if ((flags & FNM_EXTMATCH) && p[1] != L('(') && /*)*/
STRCHR (L("?*+@!"), *p) == 0 && c != L('[') && FOLD (*n) != c1) /*]*/
continue;
/* Otherwise, we just recurse. */
if (GMATCH (n, se, p, pe, flags & ~FNM_PERIOD) == 0)
return (0);
}
return FNM_NOMATCH;
}
case L('['):
{
if (sc == L('\0') || n == se)
return FNM_NOMATCH;
/* A character class cannot match a `.' if it is the first
character of the string or if it is the first character
following a slash and we are matching a pathname. */
if ((flags & FNM_PERIOD) && sc == L('.') &&
(n == string || ((flags & FNM_PATHNAME) && n[-1] == L('/'))))
return (FNM_NOMATCH);
p = BRACKMATCH (p, sc, flags);
if (p == 0)
return FNM_NOMATCH;
}
break;
default:
if ((U_CHAR)c != FOLD (sc))
return (FNM_NOMATCH);
}
++n;
}
if (n == se)
return (0);
if ((flags & FNM_LEADING_DIR) && *n == L('/'))
/* The FNM_LEADING_DIR flag says that "foo*" matches "foobar/frobozz". */
return 0;
return (FNM_NOMATCH);
}
/* Parse a bracket expression collating symbol ([.sym.]) starting at P, find
the value of the symbol, and move P past the collating symbol expression.
The value is returned in *VP, if VP is not null. */
static CHAR *
PARSE_COLLSYM (p, vp)
CHAR *p;
INT *vp;
{
register int pc;
INT val;
p++; /* move past the `.' */
for (pc = 0; p[pc]; pc++)
if (p[pc] == L('.') && p[pc+1] == L(']'))
break;
val = COLLSYM (p, pc);
if (vp)
*vp = val;
return (p + pc + 2);
}
/* Use prototype definition here because of type promotion. */
static CHAR *
#if defined (PROTOTYPES)
BRACKMATCH (CHAR *p, U_CHAR test, int flags)
#else
BRACKMATCH (p, test, flags)
CHAR *p;
U_CHAR test;
int flags;
#endif
{
register CHAR cstart, cend, c;
register int not; /* Nonzero if the sense of the character class is inverted. */
int brcnt, forcecoll;
INT pc;
CHAR *savep;
test = FOLD (test);
savep = p;
/* POSIX.2 3.13.1 says that an exclamation mark (`!') shall replace the
circumflex (`^') in its role in a `nonmatching list'. A bracket
expression starting with an unquoted circumflex character produces
unspecified results. This implementation treats the two identically. */
if (not = (*p == L('!') || *p == L('^')))
++p;
c = *p++;
for (;;)
{
/* Initialize cstart and cend in case `-' is the last
character of the pattern. */
cstart = cend = c;
forcecoll = 0;
/* POSIX.2 equivalence class: [=c=]. See POSIX.2 2.8.3.2. Find
the end of the equivalence class, move the pattern pointer past
it, and check for equivalence. XXX - this handles only
single-character equivalence classes, which is wrong, or at
least incomplete. */
if (c == L('[') && *p == L('=') && p[2] == L('=') && p[3] == L(']'))
{
pc = FOLD (p[1]);
p += 4;
if (COLLEQUIV (test, pc))
{
/*[*/ /* Move past the closing `]', since the first thing we do at
the `matched:' label is back p up one. */
p++;
goto matched;
}
else
{
c = *p++;
if (c == L('\0'))
return ((test == L('[')) ? savep : (CHAR *)0); /*]*/
c = FOLD (c);
continue;
}
}
/* POSIX.2 character class expression. See POSIX.2 2.8.3.2. */
if (c == L('[') && *p == L(':'))
{
CHAR *close, *ccname;
pc = 0; /* make sure invalid char classes don't match. */
/* Find end of character class name */
for (close = p + 1; *close != '\0'; close++)
if (*close == L(':') && *(close+1) == L(']'))
break;
if (*close != L('\0'))
{
ccname = (CHAR *)malloc ((close - p) * sizeof (CHAR));
if (ccname == 0)
pc = 0;
else
{
bcopy (p + 1, ccname, (close - p - 1) * sizeof (CHAR));
*(ccname + (close - p - 1)) = L('\0');
pc = IS_CCLASS (test, (XCHAR *)ccname);
}
if (pc == -1)
pc = 0;
else
p = close + 2;
free (ccname);
}
if (pc)
{
/*[*/ /* Move past the closing `]', since the first thing we do at
the `matched:' label is back p up one. */
p++;
goto matched;
}
else
{
/* continue the loop here, since this expression can't be
the first part of a range expression. */
c = *p++;
if (c == L('\0'))
return ((test == L('[')) ? savep : (CHAR *)0);
else if (c == L(']'))
break;
c = FOLD (c);
continue;
}
}
/* POSIX.2 collating symbols. See POSIX.2 2.8.3.2. Find the end of
the symbol name, make sure it is terminated by `.]', translate
the name to a character using the external table, and do the
comparison. */
if (c == L('[') && *p == L('.'))
{
p = PARSE_COLLSYM (p, &pc);
/* An invalid collating symbol cannot be the first point of a
range. If it is, we set cstart to one greater than `test',
so any comparisons later will fail. */
cstart = (pc == INVALID) ? test + 1 : pc;
forcecoll = 1;
}
if (!(flags & FNM_NOESCAPE) && c == L('\\'))
{
if (*p == '\0')
return (CHAR *)0;
cstart = cend = *p++;
}
cstart = cend = FOLD (cstart);
/* POSIX.2 2.8.3.1.2 says: `An expression containing a `[' that
is not preceded by a backslash and is not part of a bracket
expression produces undefined results.' This implementation
treats the `[' as just a character to be matched if there is
not a closing `]'. */
if (c == L('\0'))
return ((test == L('[')) ? savep : (CHAR *)0);
c = *p++;
c = FOLD (c);
if ((flags & FNM_PATHNAME) && c == L('/'))
/* [/] can never match when matching a pathname. */
return (CHAR *)0;
/* This introduces a range, unless the `-' is the last
character of the class. Find the end of the range
and move past it. */
if (c == L('-') && *p != L(']'))
{
cend = *p++;
if (!(flags & FNM_NOESCAPE) && cend == L('\\'))
cend = *p++;
if (cend == L('\0'))
return (CHAR *)0;
if (cend == L('[') && *p == L('.'))
{
p = PARSE_COLLSYM (p, &pc);
/* An invalid collating symbol cannot be the second part of a
range expression. If we get one, we set cend to one fewer
than the test character to make sure the range test fails. */
cend = (pc == INVALID) ? test - 1 : pc;
forcecoll = 1;
}
cend = FOLD (cend);
c = *p++;
/* POSIX.2 2.8.3.2: ``The ending range point shall collate
equal to or higher than the starting range point; otherwise
the expression shall be treated as invalid.'' Note that this
applies to only the range expression; the rest of the bracket
expression is still checked for matches. */
if (RANGECMP (cstart, cend, forcecoll) > 0)
{
if (c == L(']'))
break;
c = FOLD (c);
continue;
}
}
if (RANGECMP (test, cstart, forcecoll) >= 0 && RANGECMP (test, cend, forcecoll) <= 0)
goto matched;
if (c == L(']'))
break;
}
/* No match. */
return (!not ? (CHAR *)0 : p);
matched:
/* Skip the rest of the [...] that already matched. */
c = *--p;
brcnt = 1;
while (brcnt > 0)
{
/* A `[' without a matching `]' is just another character to match. */
if (c == L('\0'))
return ((test == L('[')) ? savep : (CHAR *)0);
c = *p++;
if (c == L('[') && (*p == L('=') || *p == L(':') || *p == L('.')))
brcnt++;
else if (c == L(']'))
brcnt--;
else if (!(flags & FNM_NOESCAPE) && c == L('\\'))
{
if (*p == '\0')
return (CHAR *)0;
/* XXX 1003.2d11 is unclear if this is right. */
++p;
}
}
return (not ? (CHAR *)0 : p);
}
#if defined (EXTENDED_GLOB)
/* ksh-like extended pattern matching:
[?*+@!](pat-list)
where pat-list is a list of one or patterns separated by `|'. Operation
is as follows:
?(patlist) match zero or one of the given patterns
*(patlist) match zero or more of the given patterns
+(patlist) match one or more of the given patterns
@(patlist) match exactly one of the given patterns
!(patlist) match anything except one of the given patterns
*/
/* Scan a pattern starting at STRING and ending at END, keeping track of
embedded () and []. If DELIM is 0, we scan until a matching `)'
because we're scanning a `patlist'. Otherwise, we scan until we see
DELIM. In all cases, we never scan past END. The return value is the
first character after the matching DELIM or NULL if the pattern is
empty or invalid. */
/*static*/ CHAR *
PATSCAN (string, end, delim)
CHAR *string, *end;
INT delim;
{
int pnest, bnest, skip;
INT cchar;
CHAR *s, c, *bfirst;
pnest = bnest = skip = 0;
cchar = 0;
bfirst = NULL;
if (string == end)
return (NULL);
for (s = string; c = *s; s++)
{
if (s >= end)
return (s);
if (skip)
{
skip = 0;
continue;
}
switch (c)
{
case L('\\'):
skip = 1;
break;
case L('\0'):
return ((CHAR *)NULL);
/* `[' is not special inside a bracket expression, but it may
introduce one of the special POSIX bracket expressions
([.SYM.], [=c=], [: ... :]) that needs special handling. */
case L('['):
if (bnest == 0)
{
bfirst = s + 1;
if (*bfirst == L('!') || *bfirst == L('^'))
bfirst++;
bnest++;
}
else if (s[1] == L(':') || s[1] == L('.') || s[1] == L('='))
cchar = s[1];
break;
/* `]' is not special if it's the first char (after a leading `!'
or `^') in a bracket expression or if it's part of one of the
special POSIX bracket expressions ([.SYM.], [=c=], [: ... :]) */
case L(']'):
if (bnest)
{
if (cchar && s[-1] == cchar)
cchar = 0;
else if (s != bfirst)
{
bnest--;
bfirst = 0;
}
}
break;
case L('('):
if (bnest == 0)
pnest++;
break;
case L(')'):
if (bnest == 0 && pnest-- <= 0)
return ++s;
break;
case L('|'):
if (bnest == 0 && pnest == 0 && delim == L('|'))
return ++s;
break;
}
}
return (NULL);
}
/* Return 0 if dequoted pattern matches S in the current locale. */
static int
STRCOMPARE (p, pe, s, se)
CHAR *p, *pe, *s, *se;
{
int ret;
CHAR c1, c2;
int l1, l2;
l1 = pe - p;
l2 = se - s;
if (l1 != l2)
return (FNM_NOMATCH); /* unequal lengths, can't be identical */
c1 = *pe;
c2 = *se;
if (c1 != 0)
*pe = '\0';
if (c2 != 0)
*se = '\0';
#if HAVE_MULTIBYTE || defined (HAVE_STRCOLL)
ret = STRCOLL ((XCHAR *)p, (XCHAR *)s);
#else
ret = STRCMP ((XCHAR *)p, (XCHAR *)s);
#endif
if (c1 != 0)
*pe = c1;
if (c2 != 0)
*se = c2;
return (ret == 0 ? ret : FNM_NOMATCH);
}
/* Match a ksh extended pattern specifier. Return FNM_NOMATCH on failure or
0 on success. This is handed the entire rest of the pattern and string
the first time an extended pattern specifier is encountered, so it calls
gmatch recursively. */
static int
EXTMATCH (xc, s, se, p, pe, flags)
INT xc; /* select which operation */
CHAR *s, *se;
CHAR *p, *pe;
int flags;
{
CHAR *prest; /* pointer to rest of pattern */
CHAR *psub; /* pointer to sub-pattern */
CHAR *pnext; /* pointer to next sub-pattern */
CHAR *srest; /* pointer to rest of string */
int m1, m2, xflags; /* xflags = flags passed to recursive matches */
#if DEBUG_MATCHING
fprintf(stderr, "extmatch: xc = %c\n", xc);
fprintf(stderr, "extmatch: s = %s; se = %s\n", s, se);
fprintf(stderr, "extmatch: p = %s; pe = %s\n", p, pe);
fprintf(stderr, "extmatch: flags = %d\n", flags);
#endif
prest = PATSCAN (p + (*p == L('(')), pe, 0); /* ) */
if (prest == 0)
/* If PREST is 0, we failed to scan a valid pattern. In this
case, we just want to compare the two as strings. */
return (STRCOMPARE (p - 1, pe, s, se));
switch (xc)
{
case L('+'): /* match one or more occurrences */
case L('*'): /* match zero or more occurrences */
/* If we can get away with no matches, don't even bother. Just
call GMATCH on the rest of the pattern and return success if
it succeeds. */
if (xc == L('*') && (GMATCH (s, se, prest, pe, flags) == 0))
return 0;
/* OK, we have to do this the hard way. First, we make sure one of
the subpatterns matches, then we try to match the rest of the
string. */
for (psub = p + 1; ; psub = pnext)
{
pnext = PATSCAN (psub, pe, L('|'));
for (srest = s; srest <= se; srest++)
{
/* Match this substring (S -> SREST) against this
subpattern (psub -> pnext - 1) */
m1 = GMATCH (s, srest, psub, pnext - 1, flags) == 0;
/* OK, we matched a subpattern, so make sure the rest of the
string matches the rest of the pattern. Also handle
multiple matches of the pattern. */
if (m1)
{
/* if srest > s, we are not at start of string */
xflags = (srest > s) ? (flags & ~FNM_PERIOD) : flags;
m2 = (GMATCH (srest, se, prest, pe, xflags) == 0) ||
(s != srest && GMATCH (srest, se, p - 1, pe, xflags) == 0);
}
if (m1 && m2)
return (0);
}
if (pnext == prest)
break;
}
return (FNM_NOMATCH);
case L('?'): /* match zero or one of the patterns */
case L('@'): /* match one (or more) of the patterns */
/* If we can get away with no matches, don't even bother. Just
call gmatch on the rest of the pattern and return success if
it succeeds. */
if (xc == L('?') && (GMATCH (s, se, prest, pe, flags) == 0))
return 0;
/* OK, we have to do this the hard way. First, we see if one of
the subpatterns matches, then, if it does, we try to match the
rest of the string. */
for (psub = p + 1; ; psub = pnext)
{
pnext = PATSCAN (psub, pe, L('|'));
srest = (prest == pe) ? se : s;
for ( ; srest <= se; srest++)
{
/* if srest > s, we are not at start of string */
xflags = (srest > s) ? (flags & ~FNM_PERIOD) : flags;
if (GMATCH (s, srest, psub, pnext - 1, flags) == 0 &&
GMATCH (srest, se, prest, pe, xflags) == 0)
return (0);
}
if (pnext == prest)
break;
}
return (FNM_NOMATCH);
case '!': /* match anything *except* one of the patterns */
for (srest = s; srest <= se; srest++)
{
m1 = 0;
for (psub = p + 1; ; psub = pnext)
{
pnext = PATSCAN (psub, pe, L('|'));
/* If one of the patterns matches, just bail immediately. */
if (m1 = (GMATCH (s, srest, psub, pnext - 1, flags) == 0))
break;
if (pnext == prest)
break;
}
/* if srest > s, we are not at start of string */
xflags = (srest > s) ? (flags & ~FNM_PERIOD) : flags;
if (m1 == 0 && GMATCH (srest, se, prest, pe, xflags) == 0)
return (0);
}
return (FNM_NOMATCH);
}
return (FNM_NOMATCH);
}
#endif /* EXTENDED_GLOB */
#undef IS_CCLASS
#undef FOLD
#undef CHAR
#undef U_CHAR
#undef XCHAR
#undef INT
#undef INVALID
#undef FCT
#undef GMATCH
#undef COLLSYM
#undef PARSE_COLLSYM
#undef PATSCAN
#undef STRCOMPARE
#undef EXTMATCH
#undef BRACKMATCH
#undef STRCHR
#undef STRCOLL
#undef STRLEN
#undef STRCMP
#undef MEMCHR
#undef COLLEQUIV
#undef RANGECMP
#undef L
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