regex.h
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- #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.
- *
- *
- *
- * Prototypes etc. marked with "^" within comments get gathered up (and
- * possibly edited) by the regfwd program and inserted near the bottom of
- * this file.
- *
- * We offer the option of declaring one wide-character version of the
- * RE functions as well as the char versions. To do that, define
- * __REG_WIDE_T to the type of wide characters (unfortunately, there
- * is no consensus that wchar_t is suitable) and __REG_WIDE_COMPILE and
- * __REG_WIDE_EXEC to the names to be used for the compile and execute
- * functions (suggestion: re_Xcomp and re_Xexec, where X is a letter
- * suggestive of the wide type, e.g. re_ucomp and re_uexec for Unicode).
- * For cranky old compilers, it may be necessary to do something like:
- * #define __REG_WIDE_COMPILE(a,b,c,d) re_Xcomp(a,b,c,d)
- * #define __REG_WIDE_EXEC(a,b,c,d,e,f,g) re_Xexec(a,b,c,d,e,f,g)
- * rather than just #defining the names as parameterless macros.
- *
- * For some specialized purposes, it may be desirable to suppress the
- * declarations of the "front end" functions, regcomp() and regexec(),
- * or of the char versions of the compile and execute functions. To
- * suppress the front-end functions, define __REG_NOFRONT. To suppress
- * the char versions, define __REG_NOCHAR.
- *
- * The right place to do those defines (and some others you may want, see
- * below) would be <sys/types.h>. If you don't have control of that file,
- * the right place to add your own defines to this file is marked below.
- * This is normally done automatically, by the makefile and regmkhdr, based
- * on the contents of regcustom.h.
- */
- /*
- * voodoo for C++
- */
- #ifdef __cplusplus
- extern "C" {
- #endif
- /*
- * Add your own defines, if needed, here.
- */
- /*
- * Location where a chunk of regcustom.h is automatically spliced into
- * this file (working from its prototype, regproto.h).
- */
- /* --- begin --- */
- /* ensure certain things don't sneak in from system headers */
- #ifdef __REG_WIDE_T
- #undef __REG_WIDE_T
- #endif
- #ifdef __REG_WIDE_COMPILE
- #undef __REG_WIDE_COMPILE
- #endif
- #ifdef __REG_WIDE_EXEC
- #undef __REG_WIDE_EXEC
- #endif
- #ifdef __REG_REGOFF_T
- #undef __REG_REGOFF_T
- #endif
- #ifdef __REG_VOID_T
- #undef __REG_VOID_T
- #endif
- #ifdef __REG_CONST
- #undef __REG_CONST
- #endif
- #ifdef __REG_NOFRONT
- #undef __REG_NOFRONT
- #endif
- #ifdef __REG_NOCHAR
- #undef __REG_NOCHAR
- #endif
- /* interface types */
- #define __REG_WIDE_T Tcl_UniChar
- #define __REG_REGOFF_T long /* not really right, but good enough... */
- #define __REG_VOID_T VOID
- #define __REG_CONST CONST
- /* names and declarations */
- #define __REG_WIDE_COMPILE TclReComp
- #define __REG_WIDE_EXEC TclReExec
- #define __REG_NOFRONT /* don't want regcomp() and regexec() */
- #define __REG_NOCHAR /* or the char versions */
- #define regfree TclReFree
- #define regerror TclReError
- /* --- end --- */
- /*
- * 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, so we
- * offer <sys/types.h> an override.
- */
- #ifdef __REG_REGOFF_T
- typedef __REG_REGOFF_T regoff_t;
- #else
- typedef long regoff_t;
- #endif
- /*
- * For benefit of old compilers, we offer <sys/types.h> the option of
- * overriding the `void' type used to declare nonexistent return types.
- */
- #ifdef __REG_VOID_T
- typedef __REG_VOID_T re_void;
- #else
- typedef void re_void;
- #endif
- /*
- * Also for benefit of old compilers, <sys/types.h> can supply a macro
- * which expands to a substitute for `const'.
- */
- #ifndef __REG_CONST
- #define __REG_CONST const
- #endif
- /*
- * 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;
- /*
- * compilation
- ^ #ifndef __REG_NOCHAR
- ^ int re_comp(regex_t *, __REG_CONST char *, size_t, int);
- ^ #endif
- ^ #ifndef __REG_NOFRONT
- ^ int regcomp(regex_t *, __REG_CONST char *, int);
- ^ #endif
- ^ #ifdef __REG_WIDE_T
- ^ int __REG_WIDE_COMPILE(regex_t *, __REG_CONST __REG_WIDE_T *, size_t, int);
- ^ #endif
- */
- #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 :-) */
- /*
- * execution
- ^ #ifndef __REG_NOCHAR
- ^ int re_exec(regex_t *, __REG_CONST char *, size_t,
- ^ rm_detail_t *, size_t, regmatch_t [], int);
- ^ #endif
- ^ #ifndef __REG_NOFRONT
- ^ int regexec(regex_t *, __REG_CONST char *, size_t, regmatch_t [], int);
- ^ #endif
- ^ #ifdef __REG_WIDE_T
- ^ int __REG_WIDE_EXEC(regex_t *, __REG_CONST __REG_WIDE_T *, size_t,
- ^ rm_detail_t *, size_t, regmatch_t [], int);
- ^ #endif
- */
- #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 */
- /*
- * misc generics (may be more functions here eventually)
- ^ re_void regfree(regex_t *);
- */
- /*
- * error reporting
- * Be careful if modifying the list of error codes -- the table used by
- * regerror() is generated automatically from this file!
- *
- * Note that there is no wide-char variant of regerror at this time; what
- * kind of character is used for error reports is independent of what kind
- * is used in matching.
- *
- ^ extern size_t regerror(int, __REG_CONST regex_t *, char *, size_t);
- */
- #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 */
- #define REG_ETOOBIG 19 /* nfa has too many states */
- /* 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, as possibly munched by regfwd
- */
- /* =====^!^===== begin forwards =====^!^===== */
- /* automatically gathered by fwd; do not hand-edit */
- /* === regproto.h === */
- #ifndef __REG_NOCHAR
- int re_comp _ANSI_ARGS_((regex_t *, __REG_CONST char *, size_t, int));
- #endif
- #ifndef __REG_NOFRONT
- int regcomp _ANSI_ARGS_((regex_t *, __REG_CONST char *, int));
- #endif
- #ifdef __REG_WIDE_T
- int __REG_WIDE_COMPILE _ANSI_ARGS_((regex_t *, __REG_CONST __REG_WIDE_T *, size_t, int));
- #endif
- #ifndef __REG_NOCHAR
- int re_exec _ANSI_ARGS_((regex_t *, __REG_CONST char *, size_t, rm_detail_t *, size_t, regmatch_t [], int));
- #endif
- #ifndef __REG_NOFRONT
- int regexec _ANSI_ARGS_((regex_t *, __REG_CONST char *, size_t, regmatch_t [], int));
- #endif
- #ifdef __REG_WIDE_T
- int __REG_WIDE_EXEC _ANSI_ARGS_((regex_t *, __REG_CONST __REG_WIDE_T *, size_t, rm_detail_t *, size_t, regmatch_t [], int));
- #endif
- re_void regfree _ANSI_ARGS_((regex_t *));
- extern size_t regerror _ANSI_ARGS_((int, __REG_CONST regex_t *, char *, size_t));
- /* automatically gathered by fwd; do not hand-edit */
- /* =====^!^===== end forwards =====^!^===== */
- /*
- * more C++ voodoo
- */
- #ifdef __cplusplus
- }
- #endif
- #endif