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pcre_internal.h
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pcre_internal.h
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/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* PCRE is a library of functions to support regular expressions whose syntax
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
Copyright (c) 1997-2012 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the University of Cambridge nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
-----------------------------------------------------------------------------
*/
/* This header contains definitions that are shared between the different
modules, but which are not relevant to the exported API. This includes some
functions whose names all begin with "_pcre_" or "_pcre16_" depending on
the PRIV macro. */
#ifndef PCRE_INTERNAL_H
#define PCRE_INTERNAL_H
/* Define PCRE_DEBUG to get debugging output on stdout. */
#if 0
#define PCRE_DEBUG
#endif
/* PCRE is compiled as an 8 bit library if it is not requested otherwise. */
#ifndef COMPILE_PCRE16
#define COMPILE_PCRE8
#endif
/* If SUPPORT_UCP is defined, SUPPORT_UTF must also be defined. The
"configure" script ensures this, but not everybody uses "configure". */
#if defined SUPPORT_UCP && !(defined SUPPORT_UTF)
#define SUPPORT_UTF 1
#endif
/* We define SUPPORT_UTF if SUPPORT_UTF8 is enabled for compatibility
reasons with existing code. */
#if defined SUPPORT_UTF8 && !(defined SUPPORT_UTF)
#define SUPPORT_UTF 1
#endif
/* Fixme: SUPPORT_UTF8 should be eventually disappear from the code.
Until then we define it if SUPPORT_UTF is defined. */
#if defined SUPPORT_UTF && !(defined SUPPORT_UTF8)
#define SUPPORT_UTF8 1
#endif
/* We do not support both EBCDIC and UTF-8/16 at the same time. The "configure"
script prevents both being selected, but not everybody uses "configure". */
#if defined EBCDIC && defined SUPPORT_UTF
#error The use of both EBCDIC and SUPPORT_UTF8/16 is not supported.
#endif
/* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
inline, and there are *still* stupid compilers about that don't like indented
pre-processor statements, or at least there were when I first wrote this. After
all, it had only been about 10 years then...
It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
be absolutely sure we get our version. */
#undef DPRINTF
#ifdef PCRE_DEBUG
#define DPRINTF(p) printf p
#else
#define DPRINTF(p) /* Nothing */
#endif
/* Standard C headers plus the external interface definition. The only time
setjmp and stdarg are used is when NO_RECURSE is set. */
#include <ctype.h>
#include <limits.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* When compiling a DLL for Windows, the exported symbols have to be declared
using some MS magic. I found some useful information on this web page:
http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
information there, using __declspec(dllexport) without "extern" we have a
definition; with "extern" we have a declaration. The settings here override the
setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
which is all that is needed for applications (they just import the symbols). We
use:
PCRE_EXP_DECL for declarations
PCRE_EXP_DEFN for definitions of exported functions
PCRE_EXP_DATA_DEFN for definitions of exported variables
The reason for the two DEFN macros is that in non-Windows environments, one
does not want to have "extern" before variable definitions because it leads to
compiler warnings. So we distinguish between functions and variables. In
Windows, the two should always be the same.
The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
which is an application, but needs to import this file in order to "peek" at
internals, can #include pcre.h first to get an application's-eye view.
In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
special-purpose environments) might want to stick other stuff in front of
exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
PCRE_EXP_DATA_DEFN only if they are not already set. */
#ifndef PCRE_EXP_DECL
# ifdef _WIN32
# ifndef PCRE_STATIC
# define PCRE_EXP_DECL extern __declspec(dllexport)
# define PCRE_EXP_DEFN __declspec(dllexport)
# define PCRE_EXP_DATA_DEFN __declspec(dllexport)
# else
# define PCRE_EXP_DECL extern
# define PCRE_EXP_DEFN
# define PCRE_EXP_DATA_DEFN
# endif
# else
# ifdef __cplusplus
# define PCRE_EXP_DECL extern "C"
# else
# define PCRE_EXP_DECL extern
# endif
# ifndef PCRE_EXP_DEFN
# define PCRE_EXP_DEFN PCRE_EXP_DECL
# endif
# ifndef PCRE_EXP_DATA_DEFN
# define PCRE_EXP_DATA_DEFN
# endif
# endif
#endif
/* When compiling with the MSVC compiler, it is sometimes necessary to include
a "calling convention" before exported function names. (This is secondhand
information; I know nothing about MSVC myself). For example, something like
void __cdecl function(....)
might be needed. In order so make this easy, all the exported functions have
PCRE_CALL_CONVENTION just before their names. It is rarely needed; if not
set, we ensure here that it has no effect. */
#ifndef PCRE_CALL_CONVENTION
#define PCRE_CALL_CONVENTION
#endif
/* We need to have types that specify unsigned 8, 16 and 32-bit integers. We
cannot determine these outside the compilation (e.g. by running a program as
part of "configure") because PCRE is often cross-compiled for use on other
systems. Instead we make use of the maximum sizes that are available at
preprocessor time in standard C environments. */
typedef unsigned char pcre_uint8;
#if USHRT_MAX == 65535
typedef unsigned short pcre_uint16;
typedef short pcre_int16;
#elif UINT_MAX == 65535
typedef unsigned int pcre_uint16;
typedef int pcre_int16;
#else
#error Cannot determine a type for 16-bit unsigned integers
#endif
#if UINT_MAX == 4294967295
typedef unsigned int pcre_uint32;
typedef int pcre_int32;
#elif ULONG_MAX == 4294967295
typedef unsigned long int pcre_uint32;
typedef long int pcre_int32;
#else
#error Cannot determine a type for 32-bit unsigned integers
#endif
/* When checking for integer overflow in pcre_compile(), we need to handle
large integers. If a 64-bit integer type is available, we can use that.
Otherwise we have to cast to double, which of course requires floating point
arithmetic. Handle this by defining a macro for the appropriate type. If
stdint.h is available, include it; it may define INT64_MAX. Systems that do not
have stdint.h (e.g. Solaris) may have inttypes.h. The macro int64_t may be set
by "configure". */
#if HAVE_STDINT_H
#include <stdint.h>
#elif HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#if defined INT64_MAX || defined int64_t
#define INT64_OR_DOUBLE int64_t
#else
#define INT64_OR_DOUBLE double
#endif
/* All character handling must be done as unsigned characters. Otherwise there
are problems with top-bit-set characters and functions such as isspace().
However, we leave the interface to the outside world as char * or short *,
because that should make things easier for callers. This character type is
called pcre_uchar.
The IN_UCHARS macro multiply its argument with the byte size of the current
pcre_uchar type. Useful for memcpy and such operations, whose require the
byte size of their input/output buffers.
The MAX_255 macro checks whether its pcre_uchar input is less than 256.
The TABLE_GET macro is designed for accessing elements of tables whose contain
exactly 256 items. When the character is able to contain more than 256
items, some check is needed before accessing these tables.
*/
#ifdef COMPILE_PCRE8
typedef unsigned char pcre_uchar;
#define IN_UCHARS(x) (x)
#define MAX_255(c) 1
#define TABLE_GET(c, table, default) ((table)[c])
#else
#ifdef COMPILE_PCRE16
#if USHRT_MAX != 65535
/* This is a warning message. Change PCRE_UCHAR16 to a 16 bit data type in
pcre.h(.in) and disable (comment out) this message. */
#error Warning: PCRE_UCHAR16 is not a 16 bit data type.
#endif
typedef pcre_uint16 pcre_uchar;
#define IN_UCHARS(x) ((x) << 1)
#define MAX_255(c) ((c) <= 255u)
#define TABLE_GET(c, table, default) (MAX_255(c)? ((table)[c]):(default))
#else
#error Unsupported compiling mode
#endif /* COMPILE_PCRE16 */
#endif /* COMPILE_PCRE8 */
/* This is an unsigned int value that no character can ever have. UTF-8
characters only go up to 0x7fffffff (though Unicode doesn't go beyond
0x0010ffff). */
#define NOTACHAR 0xffffffff
/* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
"any" and "anycrlf" at present). The following macros are used to package up
testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
modules to indicate in which datablock the parameters exist, and what the
start/end of string field names are. */
#define NLTYPE_FIXED 0 /* Newline is a fixed length string */
#define NLTYPE_ANY 1 /* Newline is any Unicode line ending */
#define NLTYPE_ANYCRLF 2 /* Newline is CR, LF, or CRLF */
/* This macro checks for a newline at the given position */
#define IS_NEWLINE(p) \
((NLBLOCK->nltype != NLTYPE_FIXED)? \
((p) < NLBLOCK->PSEND && \
PRIV(is_newline)((p), NLBLOCK->nltype, NLBLOCK->PSEND, \
&(NLBLOCK->nllen), utf)) \
: \
((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
(p)[0] == NLBLOCK->nl[0] && \
(NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \
) \
)
/* This macro checks for a newline immediately preceding the given position */
#define WAS_NEWLINE(p) \
((NLBLOCK->nltype != NLTYPE_FIXED)? \
((p) > NLBLOCK->PSSTART && \
PRIV(was_newline)((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
&(NLBLOCK->nllen), utf)) \
: \
((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
(p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \
(NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \
) \
)
/* When PCRE is compiled as a C++ library, the subject pointer can be replaced
with a custom type. This makes it possible, for example, to allow pcre_exec()
to process subject strings that are discontinuous by using a smart pointer
class. It must always be possible to inspect all of the subject string in
pcre_exec() because of the way it backtracks. Two macros are required in the
normal case, for sign-unspecified and unsigned char pointers. The former is
used for the external interface and appears in pcre.h, which is why its name
must begin with PCRE_. */
#ifdef CUSTOM_SUBJECT_PTR
#define PCRE_PUCHAR CUSTOM_SUBJECT_PTR
#else
#define PCRE_PUCHAR const pcre_uchar *
#endif
/* Include the public PCRE header and the definitions of UCP character property
values. */
#include "pcre.h"
#include "ucp.h"
/* When compiling for use with the Virtual Pascal compiler, these functions
need to have their names changed. PCRE must be compiled with the -DVPCOMPAT
option on the command line. */
#ifdef VPCOMPAT
#define strlen(s) _strlen(s)
#define strncmp(s1,s2,m) _strncmp(s1,s2,m)
#define memcmp(s,c,n) _memcmp(s,c,n)
#define memcpy(d,s,n) _memcpy(d,s,n)
#define memmove(d,s,n) _memmove(d,s,n)
#define memset(s,c,n) _memset(s,c,n)
#else /* VPCOMPAT */
/* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
is set. Otherwise, include an emulating function for those systems that have
neither (there some non-Unix environments where this is the case). */
#ifndef HAVE_MEMMOVE
#undef memmove /* some systems may have a macro */
#ifdef HAVE_BCOPY
#define memmove(a, b, c) bcopy(b, a, c)
#else /* HAVE_BCOPY */
static void *
pcre_memmove(void *d, const void *s, size_t n)
{
size_t i;
unsigned char *dest = (unsigned char *)d;
const unsigned char *src = (const unsigned char *)s;
if (dest > src)
{
dest += n;
src += n;
for (i = 0; i < n; ++i) *(--dest) = *(--src);
return (void *)dest;
}
else
{
for (i = 0; i < n; ++i) *dest++ = *src++;
return (void *)(dest - n);
}
}
#define memmove(a, b, c) pcre_memmove(a, b, c)
#endif /* not HAVE_BCOPY */
#endif /* not HAVE_MEMMOVE */
#endif /* not VPCOMPAT */
/* PCRE keeps offsets in its compiled code as 2-byte quantities (always stored
in big-endian order) by default. These are used, for example, to link from the
start of a subpattern to its alternatives and its end. The use of 2 bytes per
offset limits the size of the compiled regex to around 64K, which is big enough
for almost everybody. However, I received a request for an even bigger limit.
For this reason, and also to make the code easier to maintain, the storing and
loading of offsets from the byte string is now handled by the macros that are
defined here.
The macros are controlled by the value of LINK_SIZE. This defaults to 2 in
the config.h file, but can be overridden by using -D on the command line. This
is automated on Unix systems via the "configure" command. */
#ifdef COMPILE_PCRE8
#if LINK_SIZE == 2
#define PUT(a,n,d) \
(a[n] = (d) >> 8), \
(a[(n)+1] = (d) & 255)
#define GET(a,n) \
(((a)[n] << 8) | (a)[(n)+1])
#define MAX_PATTERN_SIZE (1 << 16)
#elif LINK_SIZE == 3
#define PUT(a,n,d) \
(a[n] = (d) >> 16), \
(a[(n)+1] = (d) >> 8), \
(a[(n)+2] = (d) & 255)
#define GET(a,n) \
(((a)[n] << 16) | ((a)[(n)+1] << 8) | (a)[(n)+2])
#define MAX_PATTERN_SIZE (1 << 24)
#elif LINK_SIZE == 4
#define PUT(a,n,d) \
(a[n] = (d) >> 24), \
(a[(n)+1] = (d) >> 16), \
(a[(n)+2] = (d) >> 8), \
(a[(n)+3] = (d) & 255)
#define GET(a,n) \
(((a)[n] << 24) | ((a)[(n)+1] << 16) | ((a)[(n)+2] << 8) | (a)[(n)+3])
/* Keep it positive */
#define MAX_PATTERN_SIZE (1 << 30)
#else
#error LINK_SIZE must be either 2, 3, or 4
#endif
#else /* COMPILE_PCRE8 */
#ifdef COMPILE_PCRE16
#if LINK_SIZE == 2
#undef LINK_SIZE
#define LINK_SIZE 1
#define PUT(a,n,d) \
(a[n] = (d))
#define GET(a,n) \
(a[n])
#define MAX_PATTERN_SIZE (1 << 16)
#elif LINK_SIZE == 3 || LINK_SIZE == 4
#undef LINK_SIZE
#define LINK_SIZE 2
#define PUT(a,n,d) \
(a[n] = (d) >> 16), \
(a[(n)+1] = (d) & 65535)
#define GET(a,n) \
(((a)[n] << 16) | (a)[(n)+1])
/* Keep it positive */
#define MAX_PATTERN_SIZE (1 << 30)
#else
#error LINK_SIZE must be either 2, 3, or 4
#endif
#else
#error Unsupported compiling mode
#endif /* COMPILE_PCRE16 */
#endif /* COMPILE_PCRE8 */
/* Convenience macro defined in terms of the others */
#define PUTINC(a,n,d) PUT(a,n,d), a += LINK_SIZE
/* PCRE uses some other 2-byte quantities that do not change when the size of
offsets changes. There are used for repeat counts and for other things such as
capturing parenthesis numbers in back references. */
#ifdef COMPILE_PCRE8
#define IMM2_SIZE 2
#define PUT2(a,n,d) \
a[n] = (d) >> 8; \
a[(n)+1] = (d) & 255
#define GET2(a,n) \
(((a)[n] << 8) | (a)[(n)+1])
#else /* COMPILE_PCRE8 */
#ifdef COMPILE_PCRE16
#define IMM2_SIZE 1
#define PUT2(a,n,d) \
a[n] = d
#define GET2(a,n) \
a[n]
#else
#error Unsupported compiling mode
#endif /* COMPILE_PCRE16 */
#endif /* COMPILE_PCRE8 */
#define PUT2INC(a,n,d) PUT2(a,n,d), a += IMM2_SIZE
/* When UTF encoding is being used, a character is no longer just a single
character. The macros for character handling generate simple sequences when
used in character-mode, and more complicated ones for UTF characters.
GETCHARLENTEST and other macros are not used when UTF is not supported,
so they are not defined. To make sure they can never even appear when
UTF support is omitted, we don't even define them. */
#ifndef SUPPORT_UTF
/* #define MAX_VALUE_FOR_SINGLE_CHAR */
/* #define HAS_EXTRALEN(c) */
/* #define GET_EXTRALEN(c) */
/* #define NOT_FIRSTCHAR(c) */
#define GETCHAR(c, eptr) c = *eptr;
#define GETCHARTEST(c, eptr) c = *eptr;
#define GETCHARINC(c, eptr) c = *eptr++;
#define GETCHARINCTEST(c, eptr) c = *eptr++;
#define GETCHARLEN(c, eptr, len) c = *eptr;
/* #define GETCHARLENTEST(c, eptr, len) */
/* #define BACKCHAR(eptr) */
/* #define FORWARDCHAR(eptr) */
/* #define ACROSSCHAR(condition, eptr, action) */
#else /* SUPPORT_UTF */
#ifdef COMPILE_PCRE8
/* These macros were originally written in the form of loops that used data
from the tables whose names start with PRIV(utf8_table). They were rewritten by
a user so as not to use loops, because in some environments this gives a
significant performance advantage, and it seems never to do any harm. */
/* Tells the biggest code point which can be encoded as a single character. */
#define MAX_VALUE_FOR_SINGLE_CHAR 127
/* Tests whether the code point needs extra characters to decode. */
#define HAS_EXTRALEN(c) ((c) >= 0xc0)
/* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
Otherwise it has an undefined behaviour. */
#define GET_EXTRALEN(c) (PRIV(utf8_table4)[(c) & 0x3f])
/* Returns TRUE, if the given character is not the first character
of a UTF sequence. */
#define NOT_FIRSTCHAR(c) (((c) & 0xc0) == 0x80)
/* Base macro to pick up the remaining bytes of a UTF-8 character, not
advancing the pointer. */
#define GETUTF8(c, eptr) \
{ \
if ((c & 0x20) == 0) \
c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
else if ((c & 0x10) == 0) \
c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
else if ((c & 0x08) == 0) \
c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
else if ((c & 0x04) == 0) \
c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
(eptr[4] & 0x3f); \
else \
c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
}
/* Get the next UTF-8 character, not advancing the pointer. This is called when
we know we are in UTF-8 mode. */
#define GETCHAR(c, eptr) \
c = *eptr; \
if (c >= 0xc0) GETUTF8(c, eptr);
/* Get the next UTF-8 character, testing for UTF-8 mode, and not advancing the
pointer. */
#define GETCHARTEST(c, eptr) \
c = *eptr; \
if (utf && c >= 0xc0) GETUTF8(c, eptr);
/* Base macro to pick up the remaining bytes of a UTF-8 character, advancing
the pointer. */
#define GETUTF8INC(c, eptr) \
{ \
if ((c & 0x20) == 0) \
c = ((c & 0x1f) << 6) | (*eptr++ & 0x3f); \
else if ((c & 0x10) == 0) \
{ \
c = ((c & 0x0f) << 12) | ((*eptr & 0x3f) << 6) | (eptr[1] & 0x3f); \
eptr += 2; \
} \
else if ((c & 0x08) == 0) \
{ \
c = ((c & 0x07) << 18) | ((*eptr & 0x3f) << 12) | \
((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
eptr += 3; \
} \
else if ((c & 0x04) == 0) \
{ \
c = ((c & 0x03) << 24) | ((*eptr & 0x3f) << 18) | \
((eptr[1] & 0x3f) << 12) | ((eptr[2] & 0x3f) << 6) | \
(eptr[3] & 0x3f); \
eptr += 4; \
} \
else \
{ \
c = ((c & 0x01) << 30) | ((*eptr & 0x3f) << 24) | \
((eptr[1] & 0x3f) << 18) | ((eptr[2] & 0x3f) << 12) | \
((eptr[3] & 0x3f) << 6) | (eptr[4] & 0x3f); \
eptr += 5; \
} \
}
/* Get the next UTF-8 character, advancing the pointer. This is called when we
know we are in UTF-8 mode. */
#define GETCHARINC(c, eptr) \
c = *eptr++; \
if (c >= 0xc0) GETUTF8INC(c, eptr);
/* Get the next character, testing for UTF-8 mode, and advancing the pointer.
This is called when we don't know if we are in UTF-8 mode. */
#define GETCHARINCTEST(c, eptr) \
c = *eptr++; \
if (utf && c >= 0xc0) GETUTF8INC(c, eptr);
/* Base macro to pick up the remaining bytes of a UTF-8 character, not
advancing the pointer, incrementing the length. */
#define GETUTF8LEN(c, eptr, len) \
{ \
if ((c & 0x20) == 0) \
{ \
c = ((c & 0x1f) << 6) | (eptr[1] & 0x3f); \
len++; \
} \
else if ((c & 0x10) == 0) \
{ \
c = ((c & 0x0f) << 12) | ((eptr[1] & 0x3f) << 6) | (eptr[2] & 0x3f); \
len += 2; \
} \
else if ((c & 0x08) == 0) \
{\
c = ((c & 0x07) << 18) | ((eptr[1] & 0x3f) << 12) | \
((eptr[2] & 0x3f) << 6) | (eptr[3] & 0x3f); \
len += 3; \
} \
else if ((c & 0x04) == 0) \
{ \
c = ((c & 0x03) << 24) | ((eptr[1] & 0x3f) << 18) | \
((eptr[2] & 0x3f) << 12) | ((eptr[3] & 0x3f) << 6) | \
(eptr[4] & 0x3f); \
len += 4; \
} \
else \
{\
c = ((c & 0x01) << 30) | ((eptr[1] & 0x3f) << 24) | \
((eptr[2] & 0x3f) << 18) | ((eptr[3] & 0x3f) << 12) | \
((eptr[4] & 0x3f) << 6) | (eptr[5] & 0x3f); \
len += 5; \
} \
}
/* Get the next UTF-8 character, not advancing the pointer, incrementing length
if there are extra bytes. This is called when we know we are in UTF-8 mode. */
#define GETCHARLEN(c, eptr, len) \
c = *eptr; \
if (c >= 0xc0) GETUTF8LEN(c, eptr, len);
/* Get the next UTF-8 character, testing for UTF-8 mode, not advancing the
pointer, incrementing length if there are extra bytes. This is called when we
do not know if we are in UTF-8 mode. */
#define GETCHARLENTEST(c, eptr, len) \
c = *eptr; \
if (utf && c >= 0xc0) GETUTF8LEN(c, eptr, len);
/* If the pointer is not at the start of a character, move it back until
it is. This is called only in UTF-8 mode - we don't put a test within the macro
because almost all calls are already within a block of UTF-8 only code. */
#define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
/* Same as above, just in the other direction. */
#define FORWARDCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr++
/* Same as above, but it allows a fully customizable form. */
#define ACROSSCHAR(condition, eptr, action) \
while((condition) && ((eptr) & 0xc0) == 0x80) action
#else /* COMPILE_PCRE8 */
#ifdef COMPILE_PCRE16
/* Tells the biggest code point which can be encoded as a single character. */
#define MAX_VALUE_FOR_SINGLE_CHAR 65535
/* Tests whether the code point needs extra characters to decode. */
#define HAS_EXTRALEN(c) (((c) & 0xfc00) == 0xd800)
/* Returns with the additional number of characters if IS_MULTICHAR(c) is TRUE.
Otherwise it has an undefined behaviour. */
#define GET_EXTRALEN(c) 1
/* Returns TRUE, if the given character is not the first character
of a UTF sequence. */
#define NOT_FIRSTCHAR(c) (((c) & 0xfc00) == 0xdc00)
/* Base macro to pick up the low surrogate of a UTF-16 character, not
advancing the pointer. */
#define GETUTF16(c, eptr) \
{ c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; }
/* Get the next UTF-16 character, not advancing the pointer. This is called when
we know we are in UTF-16 mode. */
#define GETCHAR(c, eptr) \
c = *eptr; \
if ((c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
/* Get the next UTF-16 character, testing for UTF-16 mode, and not advancing the
pointer. */
#define GETCHARTEST(c, eptr) \
c = *eptr; \
if (utf && (c & 0xfc00) == 0xd800) GETUTF16(c, eptr);
/* Base macro to pick up the low surrogate of a UTF-16 character, advancing
the pointer. */
#define GETUTF16INC(c, eptr) \
{ c = (((c & 0x3ff) << 10) | (*eptr++ & 0x3ff)) + 0x10000; }
/* Get the next UTF-16 character, advancing the pointer. This is called when we
know we are in UTF-16 mode. */
#define GETCHARINC(c, eptr) \
c = *eptr++; \
if ((c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
/* Get the next character, testing for UTF-16 mode, and advancing the pointer.
This is called when we don't know if we are in UTF-16 mode. */
#define GETCHARINCTEST(c, eptr) \
c = *eptr++; \
if (utf && (c & 0xfc00) == 0xd800) GETUTF16INC(c, eptr);
/* Base macro to pick up the low surrogate of a UTF-16 character, not
advancing the pointer, incrementing the length. */
#define GETUTF16LEN(c, eptr, len) \
{ c = (((c & 0x3ff) << 10) | (eptr[1] & 0x3ff)) + 0x10000; len++; }
/* Get the next UTF-16 character, not advancing the pointer, incrementing
length if there is a low surrogate. This is called when we know we are in
UTF-16 mode. */
#define GETCHARLEN(c, eptr, len) \
c = *eptr; \
if ((c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
/* Get the next UTF-816character, testing for UTF-16 mode, not advancing the
pointer, incrementing length if there is a low surrogate. This is called when
we do not know if we are in UTF-16 mode. */
#define GETCHARLENTEST(c, eptr, len) \
c = *eptr; \
if (utf && (c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
/* If the pointer is not at the start of a character, move it back until
it is. This is called only in UTF-16 mode - we don't put a test within the
macro because almost all calls are already within a block of UTF-16 only
code. */
#define BACKCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr--
/* Same as above, just in the other direction. */
#define FORWARDCHAR(eptr) if ((*eptr & 0xfc00) == 0xdc00) eptr++
/* Same as above, but it allows a fully customizable form. */
#define ACROSSCHAR(condition, eptr, action) \
if ((condition) && ((eptr) & 0xfc00) == 0xdc00) action
#endif
#endif /* COMPILE_PCRE8 */
#endif /* SUPPORT_UTF */
/* In case there is no definition of offsetof() provided - though any proper
Standard C system should have one. */
#ifndef offsetof
#define offsetof(p_type,field) ((size_t)&(((p_type *)0)->field))
#endif
/* Private flags containing information about the compiled regex. They used to
live at the top end of the options word, but that got almost full, so now they
are in a 16-bit flags word. From release 8.00, PCRE_NOPARTIAL is unused, as
the restrictions on partial matching have been lifted. It remains for backwards
compatibility. */
#ifdef COMPILE_PCRE8
#define PCRE_MODE 0x0001 /* compiled in 8 bit mode */
#endif
#ifdef COMPILE_PCRE16
#define PCRE_MODE 0x0002 /* compiled in 16 bit mode */
#endif
#define PCRE_FIRSTSET 0x0010 /* first_char is set */
#define PCRE_FCH_CASELESS 0x0020 /* caseless first char */
#define PCRE_REQCHSET 0x0040 /* req_byte is set */
#define PCRE_RCH_CASELESS 0x0080 /* caseless requested char */
#define PCRE_STARTLINE 0x0100 /* start after \n for multiline */
#define PCRE_NOPARTIAL 0x0200 /* can't use partial with this regex */
#define PCRE_JCHANGED 0x0400 /* j option used in regex */
#define PCRE_HASCRORLF 0x0800 /* explicit \r or \n in pattern */
#define PCRE_HASTHEN 0x1000 /* pattern contains (*THEN) */
/* Flags for the "extra" block produced by pcre_study(). */
#define PCRE_STUDY_MAPPED 0x0001 /* a map of starting chars exists */
#define PCRE_STUDY_MINLEN 0x0002 /* a minimum length field exists */
/* Masks for identifying the public options that are permitted at compile
time, run time, or study time, respectively. */
#define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
PCRE_NEWLINE_ANYCRLF)
#define PUBLIC_COMPILE_OPTIONS \
(PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
PCRE_JAVASCRIPT_COMPAT|PCRE_UCP|PCRE_NO_START_OPTIMIZE)
#define PUBLIC_EXEC_OPTIONS \
(PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_NEWLINE_BITS| \
PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE|PCRE_NO_START_OPTIMIZE)
#define PUBLIC_DFA_EXEC_OPTIONS \
(PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
PCRE_NO_UTF8_CHECK|PCRE_PARTIAL_HARD|PCRE_PARTIAL_SOFT|PCRE_DFA_SHORTEST| \
PCRE_DFA_RESTART|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
PCRE_NO_START_OPTIMIZE)
#define PUBLIC_STUDY_OPTIONS \
PCRE_STUDY_JIT_COMPILE
/* Magic number to provide a small check against being handed junk. */
#define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
/* This variable is used to detect a loaded regular expression
in different endianness. */
#define REVERSED_MAGIC_NUMBER 0x45524350UL /* 'ERCP' */
/* Negative values for the firstchar and reqchar variables */
#define REQ_UNSET (-2)
#define REQ_NONE (-1)
/* The maximum remaining length of subject we are prepared to search for a
req_byte match. */
#define REQ_BYTE_MAX 1000
/* Miscellaneous definitions. The #ifndef is to pacify compiler warnings in
environments where these macros are defined elsewhere. Unfortunately, there
is no way to do the same for the typedef. */
typedef int BOOL;
#ifndef FALSE
#define FALSE 0
#define TRUE 1
#endif
/* If PCRE is to support UTF-8 on EBCDIC platforms, we cannot use normal
character constants like '*' because the compiler would emit their EBCDIC code,
which is different from their ASCII/UTF-8 code. Instead we define macros for
the characters so that they always use the ASCII/UTF-8 code when UTF-8 support
is enabled. When UTF-8 support is not enabled, the definitions use character
literals. Both character and string versions of each character are needed, and
there are some longer strings as well.
This means that, on EBCDIC platforms, the PCRE library can handle either
EBCDIC, or UTF-8, but not both. To support both in the same compiled library
would need different lookups depending on whether PCRE_UTF8 was set or not.
This would make it impossible to use characters in switch/case statements,
which would reduce performance. For a theoretical use (which nobody has asked
for) in a minority area (EBCDIC platforms), this is not sensible. Any
application that did need both could compile two versions of the library, using
macros to give the functions distinct names. */
#ifndef SUPPORT_UTF
/* UTF-8 support is not enabled; use the platform-dependent character literals
so that PCRE works on both ASCII and EBCDIC platforms, in non-UTF-mode only. */
#define CHAR_HT '\t'
#define CHAR_VT '\v'
#define CHAR_FF '\f'
#define CHAR_CR '\r'
#define CHAR_NL '\n'
#define CHAR_BS '\b'
#define CHAR_BEL '\a'
#ifdef EBCDIC
#define CHAR_ESC '\047'
#define CHAR_DEL '\007'
#else
#define CHAR_ESC '\033'
#define CHAR_DEL '\177'
#endif
#define CHAR_SPACE ' '
#define CHAR_EXCLAMATION_MARK '!'
#define CHAR_QUOTATION_MARK '"'
#define CHAR_NUMBER_SIGN '#'
#define CHAR_DOLLAR_SIGN '$'
#define CHAR_PERCENT_SIGN '%'
#define CHAR_AMPERSAND '&'
#define CHAR_APOSTROPHE '\''
#define CHAR_LEFT_PARENTHESIS '('
#define CHAR_RIGHT_PARENTHESIS ')'
#define CHAR_ASTERISK '*'
#define CHAR_PLUS '+'
#define CHAR_COMMA ','
#define CHAR_MINUS '-'
#define CHAR_DOT '.'
#define CHAR_SLASH '/'
#define CHAR_0 '0'
#define CHAR_1 '1'
#define CHAR_2 '2'
#define CHAR_3 '3'
#define CHAR_4 '4'
#define CHAR_5 '5'
#define CHAR_6 '6'
#define CHAR_7 '7'
#define CHAR_8 '8'
#define CHAR_9 '9'
#define CHAR_COLON ':'
#define CHAR_SEMICOLON ';'
#define CHAR_LESS_THAN_SIGN '<'
#define CHAR_EQUALS_SIGN '='
#define CHAR_GREATER_THAN_SIGN '>'
#define CHAR_QUESTION_MARK '?'
#define CHAR_COMMERCIAL_AT '@'
#define CHAR_A 'A'
#define CHAR_B 'B'
#define CHAR_C 'C'
#define CHAR_D 'D'
#define CHAR_E 'E'
#define CHAR_F 'F'
#define CHAR_G 'G'
#define CHAR_H 'H'
#define CHAR_I 'I'