home *** CD-ROM | disk | FTP | other *** search
- #ifndef _REGEX_H_
- #define _REGEX_H_ /* never again */
- /*
- * regular expressions
- *
- * Copyright (c) 1998, 1999 Henry Spencer. All rights reserved.
- *
- * Development of this software was funded, in part, by Cray Research Inc.,
- * UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
- * Corporation, none of whom are responsible for the results. The author
- * thanks all of them.
- *
- * Redistribution and use in source and binary forms -- with or without
- * modification -- are permitted for any purpose, provided that
- * redistributions in source form retain this entire copyright notice and
- * indicate the origin and nature of any modifications.
- *
- * I'd appreciate being given credit for this package in the documentation
- * of software which uses it, but that is not a requirement.
- *
- * THIS SOFTWARE IS PROVIDED ``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
- * HENRY SPENCER 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.
- *
- */
-
- /*
- * interface types etc.
- */
-
- /*
- * regoff_t has to be large enough to hold either off_t or ssize_t,
- * and must be signed; it's only a guess that long is suitable.
- */
- typedef long regoff_t;
-
- /*
- * other interface types
- */
-
- /* the biggie, a compiled RE (or rather, a front end to same) */
- typedef struct
- {
- int re_magic; /* magic number */
- size_t re_nsub; /* number of subexpressions */
- long re_info; /* information about RE */
- #define REG_UBACKREF 000001
- #define REG_ULOOKAHEAD 000002
- #define REG_UBOUNDS 000004
- #define REG_UBRACES 000010
- #define REG_UBSALNUM 000020
- #define REG_UPBOTCH 000040
- #define REG_UBBS 000100
- #define REG_UNONPOSIX 000200
- #define REG_UUNSPEC 000400
- #define REG_UUNPORT 001000
- #define REG_ULOCALE 002000
- #define REG_UEMPTYMATCH 004000
- #define REG_UIMPOSSIBLE 010000
- #define REG_USHORTEST 020000
- int re_csize; /* sizeof(character) */
- char *re_endp; /* backward compatibility kludge */
- /* the rest is opaque pointers to hidden innards */
- char *re_guts; /* `char *' is more portable than `void *' */
- char *re_fns;
- } regex_t;
-
- /* result reporting (may acquire more fields later) */
- typedef struct
- {
- regoff_t rm_so; /* start of substring */
- regoff_t rm_eo; /* end of substring */
- } regmatch_t;
-
- /* supplementary control and reporting */
- typedef struct
- {
- regmatch_t rm_extend; /* see REG_EXPECT */
- } rm_detail_t;
-
-
-
- /*
- * regex compilation flags
- */
- #define REG_BASIC 000000 /* BREs (convenience) */
- #define REG_EXTENDED 000001 /* EREs */
- #define REG_ADVF 000002 /* advanced features in EREs */
- #define REG_ADVANCED 000003 /* AREs (which are also EREs) */
- #define REG_QUOTE 000004 /* no special characters, none */
- #define REG_NOSPEC REG_QUOTE /* historical synonym */
- #define REG_ICASE 000010 /* ignore case */
- #define REG_NOSUB 000020 /* don't care about subexpressions */
- #define REG_EXPANDED 000040 /* expanded format, white space & comments */
- #define REG_NLSTOP 000100 /* \n doesn't match . or [^ ] */
- #define REG_NLANCH 000200 /* ^ matches after \n, $ before */
- #define REG_NEWLINE 000300 /* newlines are line terminators */
- #define REG_PEND 000400 /* ugh -- backward-compatibility hack */
- #define REG_EXPECT 001000 /* report details on partial/limited
- * matches */
- #define REG_BOSONLY 002000 /* temporary kludge for BOS-only matches */
- #define REG_DUMP 004000 /* none of your business :-) */
- #define REG_FAKE 010000 /* none of your business :-) */
- #define REG_PROGRESS 020000 /* none of your business :-) */
-
-
-
- /*
- * regex execution flags
- */
- #define REG_NOTBOL 0001 /* BOS is not BOL */
- #define REG_NOTEOL 0002 /* EOS is not EOL */
- #define REG_STARTEND 0004 /* backward compatibility kludge */
- #define REG_FTRACE 0010 /* none of your business */
- #define REG_MTRACE 0020 /* none of your business */
- #define REG_SMALL 0040 /* none of your business */
-
-
- /*
- * error reporting
- * Be careful if modifying the list of error codes -- the table used by
- * regerror() is generated automatically from this file!
- */
- #define REG_OKAY 0 /* no errors detected */
- #define REG_NOMATCH 1 /* failed to match */
- #define REG_BADPAT 2 /* invalid regexp */
- #define REG_ECOLLATE 3 /* invalid collating element */
- #define REG_ECTYPE 4 /* invalid character class */
- #define REG_EESCAPE 5 /* invalid escape \ sequence */
- #define REG_ESUBREG 6 /* invalid backreference number */
- #define REG_EBRACK 7 /* brackets [] not balanced */
- #define REG_EPAREN 8 /* parentheses () not balanced */
- #define REG_EBRACE 9 /* braces {} not balanced */
- #define REG_BADBR 10 /* invalid repetition count(s) */
- #define REG_ERANGE 11 /* invalid character range */
- #define REG_ESPACE 12 /* out of memory */
- #define REG_BADRPT 13 /* quantifier operand invalid */
- #define REG_ASSERT 15 /* "can't happen" -- you found a bug */
- #define REG_INVARG 16 /* invalid argument to regex function */
- #define REG_MIXED 17 /* character widths of regex and string
- * differ */
- #define REG_BADOPT 18 /* invalid embedded option */
- /* two specials for debugging and testing */
- #define REG_ATOI 101 /* convert error-code name to number */
- #define REG_ITOA 102 /* convert error-code number to name */
-
-
-
- /*
- * the prototypes for exported functions
- */
- extern int ul_regcomp(regex_t *, const char *, size_t, int);
-
- extern int ul_regexec(regex_t *, const char *, size_t, size_t,
- rm_detail_t *, size_t, regmatch_t[], int);
- extern void regfree(regex_t *);
- extern size_t regerror(int, const regex_t *, char *, size_t);
-
- /* This evilness is necessary to provide the expected POSIX API */
- #define regcomp(preg, regex, cflags) \
- ul_regcomp((preg), (regex), strlen((regex)), (cflags))
-
- #define regexec(preg, string, nmatch, pmatch, eflags) \
- ul_regexec((preg), (string), strlen((string)), 0, \
- NULL, (nmatch), (pmatch), (eflags))
-
- #endif /* _REGEX_H_ */
-