diff options
Diffstat (limited to 'Modules/pcre-internal.h')
| -rw-r--r-- | Modules/pcre-internal.h | 146 |
1 files changed, 107 insertions, 39 deletions
diff --git a/Modules/pcre-internal.h b/Modules/pcre-internal.h index 1666465..735c02d 100644 --- a/Modules/pcre-internal.h +++ b/Modules/pcre-internal.h @@ -3,7 +3,7 @@ *************************************************/ -#define PCRE_VERSION "0.95 23-Sep-1997" +#define PCRE_VERSION "1.01 19-Nov-1997" /* This is a library of functions to support regular expressions whose syntax @@ -34,38 +34,54 @@ restrictions: /* This header contains definitions that are shared between the different modules, but which are not relevant to the outside. */ + +/* To cope with SunOS4 and other systems that lack memmove() but have bcopy(), +define a macro for memmove() if USE_BCOPY is defined. */ + +#ifdef USE_BCOPY +#define memmove(a, b, c) bcopy(b, a, c) +#endif + /* Standard C headers plus the external interface definition */ #include <ctype.h> #include <limits.h> +#include <setjmp.h> +#include <stddef.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include "pcre.h" -/* Private options flags start at the most significant end of the byte. The -public options defined in pcre.h start at the least significant end. Make sure -they don't overlap! */ +/* Private options flags start at the most significant end of the two bytes. +The public options defined in pcre.h start at the least significant end. Make +sure they don't overlap! */ -#define PCRE_FIRSTSET 0x80 /* first_char is set */ -#define PCRE_STARTLINE 0x40 /* start after \n for multiline */ +#define PCRE_FIRSTSET 0x8000 /* first_char is set */ +#define PCRE_STARTLINE 0x4000 /* start after \n for multiline */ +#define PCRE_COMPILED_CASELESS 0x2000 /* like it says */ /* Options for the "extra" block produced by pcre_study(). */ #define PCRE_STUDY_CASELESS 0x01 /* study was caseless */ -#define PCRE_STUDY_MAPPED 0x20 /* a map of starting chars exists */ +#define PCRE_STUDY_MAPPED 0x02 /* a map of starting chars exists */ /* Masks for identifying the public options: all permitted at compile time, only some permitted at run or study time. */ #ifdef FOR_PYTHON #define PUBLIC_OPTIONS \ - (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE|PCRE_DOTALL) + (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \ + PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_LOCALE) #else #define PUBLIC_OPTIONS \ - (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE) + (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \ + PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA) #endif -#define PUBLIC_EXEC_OPTIONS (PCRE_CASELESS|PCRE_ANCHORED|PCRE_MULTILINE) +#define PUBLIC_EXEC_OPTIONS \ + (PCRE_CASELESS|PCRE_ANCHORED|PCRE_MULTILINE|PCRE_NOTBOL|PCRE_NOTEOL| \ + PCRE_DOTALL|PCRE_DOLLAR_ENDONLY) + #define PUBLIC_STUDY_OPTIONS (PCRE_CASELESS) /* Magic number to provide a small check against being handed junk. */ @@ -79,26 +95,22 @@ typedef int BOOL; #define FALSE 0 #define TRUE 1 -/* Flags for character classes - see also class_ops table below. */ - -#define CLASS_DIGITS 0x01 -#define CLASS_NOT_DIGITS 0x02 -#define CLASS_WHITESPACE 0x04 -#define CLASS_NOT_WHITESPACE 0x08 -#define CLASS_WORD 0x10 -#define CLASS_NOT_WORD 0x20 - /* These are escaped items that aren't just an encoding of a particular data value such as \n. They must have non-zero values, as check_escape() returns their negation. Also, they must appear in the same order as in the opcode definitions below, up to ESC_Z. The final one must be ESC_REF as subsequent values are used for \1, \2, \3, etc. There is a test in the code for an escape -greater than ESC_b and less than ESC_Z to detect the types that may be +greater than ESC_b and less than ESC_X to detect the types that may be repeated. If any new escapes are put in-between that don't consume a character, that code will have to change. */ enum { ESC_A = 1, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s, ESC_W, ESC_w, - ESC_Z, ESC_REF }; + + /* These are not Perl escapes, so can't appear in the */ + ESC_X, /* simple table-lookup because they must be conditional */ + /* on PCRE_EXTRA. */ + ESC_Z, + ESC_REF }; /* Opcode table: OP_BRA must be last, as all values >= it are used for brackets that extract substrings. Starting from 1 (i.e. after OP_END), the values up to @@ -110,21 +122,28 @@ enum { /* Values corresponding to backslashed metacharacters */ OP_SOD, /* Start of data: \A */ - OP_NOT_WORD_BOUNDARY, /* \W */ - OP_WORD_BOUNDARY, /* \w */ + OP_NOT_WORD_BOUNDARY, /* \B */ + OP_WORD_BOUNDARY, /* \b */ OP_NOT_DIGIT, /* \D */ OP_DIGIT, /* \d */ OP_NOT_WHITESPACE, /* \S */ OP_WHITESPACE, /* \s */ OP_NOT_WORDCHAR, /* \W */ OP_WORDCHAR, /* \w */ + OP_CUT, /* The analogue of Prolog's "cut" operation (extension) */ OP_EOD, /* End of data: or \Z. This must always be the last of the backslashed meta values. */ + OP_NOT_WORD_BOUNDARY_L, /* localized \B */ + OP_WORD_BOUNDARY_L, /* localized \b */ + OP_NOT_WORDCHAR_L, /* localized \W */ + OP_WORDCHAR_L, /* localized \w */ + OP_CIRC, /* Start of line - varies with multiline switch */ OP_DOLL, /* End of line - varies with multiline switch */ OP_ANY, /* Match any character */ OP_CHARS, /* Match string of characters */ + OP_NOT, /* Match anything but the following char */ OP_STAR, /* The maximizing and minimizing versions of */ OP_MINSTAR, /* all these opcodes must come in pairs, with */ @@ -132,9 +151,19 @@ enum { OP_MINPLUS, /* This first set applies to single characters */ OP_QUERY, OP_MINQUERY, - OP_UPTO, /* From 0 to n matches. */ + OP_UPTO, /* From 0 to n matches */ OP_MINUPTO, - OP_EXACT, /* Exactly n matches. */ + OP_EXACT, /* Exactly n matches */ + + OP_NOTSTAR, /* The maximizing and minimizing versions of */ + OP_NOTMINSTAR, /* all these opcodes must come in pairs, with */ + OP_NOTPLUS, /* the minimizing one second. */ + OP_NOTMINPLUS, /* This first set applies to "not" single characters */ + OP_NOTQUERY, + OP_NOTMINQUERY, + OP_NOTUPTO, /* From 0 to n matches */ + OP_NOTMINUPTO, + OP_NOTEXACT, /* Exactly n matches */ OP_TYPESTAR, /* The maximizing and minimizing versions of */ OP_TYPEMINSTAR, /* all these opcodes must come in pairs, with */ @@ -142,9 +171,9 @@ enum { OP_TYPEMINPLUS, /* be in exactly the same order as those above. */ OP_TYPEQUERY, /* This set applies to character types such as \d */ OP_TYPEMINQUERY, - OP_TYPEUPTO, + OP_TYPEUPTO, /* From 0 to n matches */ OP_TYPEMINUPTO, - OP_TYPEEXACT, + OP_TYPEEXACT, /* Exactly n matches */ OP_CRSTAR, /* The maximizing and minimizing versions of */ OP_CRMINSTAR, /* all these opcodes must come in pairs, with */ @@ -152,11 +181,11 @@ enum { OP_CRMINPLUS, /* be in exactly the same order as those above. */ OP_CRQUERY, /* These are for character classes and back refs */ OP_CRMINQUERY, - OP_CRRANGE, /* These are different to the two seta above. */ + OP_CRRANGE, /* These are different to the three seta above. */ OP_CRMINRANGE, OP_CLASS, /* Match a character class */ - OP_NEGCLASS, /* Don't match a character class */ + OP_CLASS_L, /* Match a character class */ OP_REF, /* Match a back reference */ OP_ALT, /* Start of alternation */ @@ -166,6 +195,7 @@ enum { OP_ASSERT, OP_ASSERT_NOT, + OP_ONCE, /* Once matched, don't back up into the subpattern */ OP_BRAZERO, /* These two must remain together and in this */ OP_BRAMINZERO, /* order. */ @@ -179,6 +209,35 @@ left after OP_BRA, i.e. 255 - OP_BRA. We actually set it somewhat lower. */ #define EXTRACT_MAX 99 +/* The texts of compile-time error messages are defined as macros here so that +they can be accessed by the POSIX wrapper and converted into error codes. Yes, +I could have used error codes in the first place, but didn't feel like changing +just to accommodate the POSIX wrapper. */ + +#define ERR1 "\\ at end of pattern" +#define ERR2 "\\c at end of pattern" +#define ERR3 "unrecognized character follows \\" +#define ERR4 "numbers out of order in {} quantifier" +#define ERR5 "number too big in {} quantifier" +#define ERR6 "missing terminating ] for character class" +#define ERR7 "invalid escape sequence in character class" +#define ERR8 "range out of order in character class" +#define ERR9 "nothing to repeat" +#define ERR10 "operand of unlimited repeat could match the empty string" +#define ERR11 "internal error: unexpected repeat" +#define ERR12 "unrecognized character after (?" +#define ERR13 "too many capturing parenthesized sub-patterns" +#define ERR14 "missing )" +#define ERR15 "back reference to non-existent subpattern" +#define ERR16 "erroffset passed as NULL" +#define ERR17 "unknown option bit(s) set" +#define ERR18 "missing ) after comment" +#define ERR19 "too many sets of parentheses" +#define ERR20 "regular expression too large" +#define ERR21 "failed to get memory" +#define ERR22 "unmatched brackets" +#define ERR23 "internal error: code overflow" + /* 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 *, because that @@ -193,8 +252,9 @@ runs on as long as necessary after the end. */ typedef struct real_pcre { unsigned int magic_number; - unsigned char options; + unsigned short int options; unsigned char top_bracket; + unsigned char top_backref; unsigned char first_char; unsigned char code[1]; } real_pcre; @@ -206,21 +266,29 @@ typedef struct real_pcre_extra { unsigned char start_bits[32]; } real_pcre_extra; -/* Global tables from pcre-chartables.c */ +/* Global tables from chartables.c */ extern uschar pcre_lcc[]; -extern uschar pcre_ucc[]; +extern uschar pcre_fcc[]; +extern uschar pcre_cbits[]; extern uschar pcre_ctypes[]; /* Bit definitions for entries in pcre_ctypes[]. */ #define ctype_space 0x01 -#define ctype_digit 0x02 -#define ctype_xdigit 0x04 -#define ctype_word 0x08 /* alphameric or '_' */ -#ifdef FOR_PYTHON -#define ctype_odigit 0x10 /* Octal digits */ -#endif +#define ctype_letter 0x02 +#define ctype_digit 0x04 +#define ctype_xdigit 0x08 +#define ctype_word 0x10 /* alphameric or '_' */ +#define ctype_odigit 0x20 /* octal digit */ #define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */ -/* End of pcre-internal.h */ +/* Offsets for the bitmap tables */ + +#define cbit_digit 0 +#define cbit_letter 32 +#define cbit_word 64 +#define cbit_space 96 +#define cbit_length 128 /* Length of the cbits table */ + +/* End of internal.h */ |