1 #ifndef _REGEX_H_ 2 #define _REGEX_H_ /* never again */ 3 /* 4 * regular expressions 5 * 6 * Copyright (c) 1998, 1999 Henry Spencer. All rights reserved. 7 * 8 * Development of this software was funded, in part, by Cray Research Inc., 9 * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics 10 * Corporation, none of whom are responsible for the results. The author 11 * thanks all of them. 12 * 13 * Redistribution and use in source and binary forms -- with or without 14 * modification -- are permitted for any purpose, provided that 15 * redistributions in source form retain this entire copyright notice and 16 * indicate the origin and nature of any modifications. 17 * 18 * I'd appreciate being given credit for this package in the documentation 19 * of software which uses it, but that is not a requirement. 20 * 21 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 22 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 23 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 24 * HENRY SPENCER BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 30 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 * src/include/regex/regex.h 33 */ 34 35 /* 36 * Add your own defines, if needed, here. 37 */ 38 #include "mb/pg_wchar.h" 39 40 /* 41 * interface types etc. 42 */ 43 44 /* 45 * regoff_t has to be large enough to hold either off_t or ssize_t, 46 * and must be signed; it's only a guess that long is suitable. 47 */ 48 typedef long regoff_t; 49 50 /* 51 * other interface types 52 */ 53 54 /* the biggie, a compiled RE (or rather, a front end to same) */ 55 typedef struct 56 { 57 int re_magic; /* magic number */ 58 size_t re_nsub; /* number of subexpressions */ 59 long re_info; /* information about RE */ 60 #define REG_UBACKREF 000001 61 #define REG_ULOOKAROUND 000002 62 #define REG_UBOUNDS 000004 63 #define REG_UBRACES 000010 64 #define REG_UBSALNUM 000020 65 #define REG_UPBOTCH 000040 66 #define REG_UBBS 000100 67 #define REG_UNONPOSIX 000200 68 #define REG_UUNSPEC 000400 69 #define REG_UUNPORT 001000 70 #define REG_ULOCALE 002000 71 #define REG_UEMPTYMATCH 004000 72 #define REG_UIMPOSSIBLE 010000 73 #define REG_USHORTEST 020000 74 int re_csize; /* sizeof(character) */ 75 char *re_endp; /* backward compatibility kludge */ 76 Oid re_collation; /* Collation that defines LC_CTYPE behavior */ 77 /* the rest is opaque pointers to hidden innards */ 78 char *re_guts; /* `char *' is more portable than `void *' */ 79 char *re_fns; 80 } regex_t; 81 82 /* result reporting (may acquire more fields later) */ 83 typedef struct 84 { 85 regoff_t rm_so; /* start of substring */ 86 regoff_t rm_eo; /* end of substring */ 87 } regmatch_t; 88 89 /* supplementary control and reporting */ 90 typedef struct 91 { 92 regmatch_t rm_extend; /* see REG_EXPECT */ 93 } rm_detail_t; 94 95 96 97 /* 98 * regex compilation flags 99 */ 100 #define REG_BASIC 000000 /* BREs (convenience) */ 101 #define REG_EXTENDED 000001 /* EREs */ 102 #define REG_ADVF 000002 /* advanced features in EREs */ 103 #define REG_ADVANCED 000003 /* AREs (which are also EREs) */ 104 #define REG_QUOTE 000004 /* no special characters, none */ 105 #define REG_NOSPEC REG_QUOTE /* historical synonym */ 106 #define REG_ICASE 000010 /* ignore case */ 107 #define REG_NOSUB 000020 /* don't care about subexpressions */ 108 #define REG_EXPANDED 000040 /* expanded format, white space & comments */ 109 #define REG_NLSTOP 000100 /* \n doesn't match . or [^ ] */ 110 #define REG_NLANCH 000200 /* ^ matches after \n, $ before */ 111 #define REG_NEWLINE 000300 /* newlines are line terminators */ 112 #define REG_PEND 000400 /* ugh -- backward-compatibility hack */ 113 #define REG_EXPECT 001000 /* report details on partial/limited matches */ 114 #define REG_BOSONLY 002000 /* temporary kludge for BOS-only matches */ 115 #define REG_DUMP 004000 /* none of your business :-) */ 116 #define REG_FAKE 010000 /* none of your business :-) */ 117 #define REG_PROGRESS 020000 /* none of your business :-) */ 118 119 120 121 /* 122 * regex execution flags 123 */ 124 #define REG_NOTBOL 0001 /* BOS is not BOL */ 125 #define REG_NOTEOL 0002 /* EOS is not EOL */ 126 #define REG_STARTEND 0004 /* backward compatibility kludge */ 127 #define REG_FTRACE 0010 /* none of your business */ 128 #define REG_MTRACE 0020 /* none of your business */ 129 #define REG_SMALL 0040 /* none of your business */ 130 131 132 /* 133 * error reporting 134 * Be careful if modifying the list of error codes -- the table used by 135 * regerror() is generated automatically from this file! 136 */ 137 #define REG_OKAY 0 /* no errors detected */ 138 #define REG_NOMATCH 1 /* failed to match */ 139 #define REG_BADPAT 2 /* invalid regexp */ 140 #define REG_ECOLLATE 3 /* invalid collating element */ 141 #define REG_ECTYPE 4 /* invalid character class */ 142 #define REG_EESCAPE 5 /* invalid escape \ sequence */ 143 #define REG_ESUBREG 6 /* invalid backreference number */ 144 #define REG_EBRACK 7 /* brackets [] not balanced */ 145 #define REG_EPAREN 8 /* parentheses () not balanced */ 146 #define REG_EBRACE 9 /* braces {} not balanced */ 147 #define REG_BADBR 10 /* invalid repetition count(s) */ 148 #define REG_ERANGE 11 /* invalid character range */ 149 #define REG_ESPACE 12 /* out of memory */ 150 #define REG_BADRPT 13 /* quantifier operand invalid */ 151 #define REG_ASSERT 15 /* "can't happen" -- you found a bug */ 152 #define REG_INVARG 16 /* invalid argument to regex function */ 153 #define REG_MIXED 17 /* character widths of regex and string differ */ 154 #define REG_BADOPT 18 /* invalid embedded option */ 155 #define REG_ETOOBIG 19 /* regular expression is too complex */ 156 #define REG_ECOLORS 20 /* too many colors */ 157 #define REG_CANCEL 21 /* operation cancelled */ 158 /* two specials for debugging and testing */ 159 #define REG_ATOI 101 /* convert error-code name to number */ 160 #define REG_ITOA 102 /* convert error-code number to name */ 161 /* non-error result codes for pg_regprefix */ 162 #define REG_PREFIX (-1) /* identified a common prefix */ 163 #define REG_EXACT (-2) /* identified an exact match */ 164 165 166 167 /* 168 * the prototypes for exported functions 169 */ 170 extern int pg_regcomp(regex_t *, const pg_wchar *, size_t, int, Oid); 171 extern int pg_regexec(regex_t *, const pg_wchar *, size_t, size_t, rm_detail_t *, size_t, regmatch_t[], int); 172 extern int pg_regprefix(regex_t *, pg_wchar **, size_t *); 173 extern void pg_regfree(regex_t *); 174 extern size_t pg_regerror(int, const regex_t *, char *, size_t); 175 extern void pg_set_regex_collation(Oid collation); 176 177 #endif /* _REGEX_H_ */ 178