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Diffstat (limited to 'tcl8.6/generic/regex.h')
| -rw-r--r-- | tcl8.6/generic/regex.h | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/tcl8.6/generic/regex.h b/tcl8.6/generic/regex.h new file mode 100644 index 0000000..8845f72 --- /dev/null +++ b/tcl8.6/generic/regex.h @@ -0,0 +1,305 @@ +#ifndef _REGEX_H_ +#define _REGEX_H_ /* never again */ + +#include "tclInt.h" + +/* + * 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_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... */ +/* 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 + +/* + * 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 *, const char *, size_t, int); + ^ #endif + ^ #ifndef __REG_NOFRONT + ^ int regcomp(regex_t *, const char *, int); + ^ #endif + ^ #ifdef __REG_WIDE_T + ^ int __REG_WIDE_COMPILE(regex_t *, 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 *, const char *, size_t, + ^ rm_detail_t *, size_t, regmatch_t [], int); + ^ #endif + ^ #ifndef __REG_NOFRONT + ^ int regexec(regex_t *, const char *, size_t, regmatch_t [], int); + ^ #endif + ^ #ifdef __REG_WIDE_T + ^ int __REG_WIDE_EXEC(regex_t *, 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) + ^ 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, 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 /* regular expression is too complex */ +#define REG_ECOLORS 20 /* too many colors */ +/* 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(regex_t *, const char *, size_t, int); +#endif +#ifndef __REG_NOFRONT +int regcomp(regex_t *, const char *, int); +#endif +#ifdef __REG_WIDE_T +MODULE_SCOPE int __REG_WIDE_COMPILE(regex_t *, const __REG_WIDE_T *, size_t, int); +#endif +#ifndef __REG_NOCHAR +int re_exec(regex_t *, const char *, size_t, rm_detail_t *, size_t, regmatch_t [], int); +#endif +#ifndef __REG_NOFRONT +int regexec(regex_t *, const char *, size_t, regmatch_t [], int); +#endif +#ifdef __REG_WIDE_T +MODULE_SCOPE int __REG_WIDE_EXEC(regex_t *, const __REG_WIDE_T *, size_t, rm_detail_t *, size_t, regmatch_t [], int); +#endif +MODULE_SCOPE void regfree(regex_t *); +MODULE_SCOPE size_t regerror(int, const regex_t *, char *, size_t); +/* automatically gathered by fwd; do not hand-edit */ +/* =====^!^===== end forwards =====^!^===== */ + +/* + * more C++ voodoo + */ +#ifdef __cplusplus +} +#endif + +#endif + +/* + * Local Variables: + * mode: c + * c-basic-offset: 4 + * fill-column: 78 + * End: + */ |