1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1985-2012 AT&T Intellectual Property * 5* and is licensed under the * 6* Eclipse Public License, Version 1.0 * 7* by AT&T Intellectual Property * 8* * 9* A copy of the License is available at * 10* http://www.eclipse.org/org/documents/epl-v10.html * 11* (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12* * 13* Information and Software Systems Research * 14* AT&T Research * 15* Florham Park NJ * 16* * 17* Glenn Fowler <gsf@research.att.com> * 18* David Korn <dgk@research.att.com> * 19* Phong Vo <kpv@research.att.com> * 20* * 21***********************************************************************/ 22#pragma prototyped 23 24/* 25 * regex library interface 26 */ 27 28#ifdef _AST_STD_I 29#define _REGEX_H -1 30#define regex_t int 31#define regmatch_t int 32#endif 33#ifndef _REGEX_H 34#define _REGEX_H 1 35#undef regex_t 36#undef regmatch_t 37 38#include <ast_common.h> 39#include <ast_wchar.h> 40#include <ast_api.h> 41 42#define REG_VERSION 20100930L 43 44/* regcomp flags */ 45 46#define REG_AUGMENTED 0x00000001 /* enable ! & < > */ 47#define REG_EXTENDED 0x00000002 /* enable ( | ) */ 48#define REG_ICASE 0x00000004 /* ignore case in match */ 49#define REG_NEWLINE 0x00000008 /* ^/$ match embedded \n */ 50#define REG_NOSUB 0x00000010 /* don't report subexp matches */ 51#define REG_SHELL 0x00000020 /* shell pattern syntax */ 52 53/* nonstandard regcomp flags */ 54 55#define REG_LEFT 0x00000100 /* implicit ^... */ 56#define REG_LITERAL 0x00000200 /* no operators */ 57#define REG_MINIMAL 0x00000400 /* minimal match */ 58#define REG_NULL 0x00000800 /* allow null patterns */ 59#define REG_RIGHT 0x00001000 /* implicit ...$ */ 60#define REG_LENIENT 0x00002000 /* look the other way */ 61#define REG_ESCAPE 0x00004000 /* \ escapes delimiter in [...] */ 62#define REG_FIRST 0x00008000 /* first match found will do */ 63#define REG_MULTIPLE 0x00010000 /* multiple \n sep patterns */ 64#define REG_DISCIPLINE 0x00020000 /* regex_t.re_disc is valid */ 65#define REG_SPAN 0x00040000 /* . matches \n */ 66#define REG_COMMENT 0x00080000 /* ignore pattern space & #...\n*/ 67#define REG_MULTIREF 0x00100000 /* multiple digit backrefs */ 68#define REG_MUSTDELIM 0x08000000 /* all delimiters required */ 69#define REG_DELIMITED 0x10000000 /* pattern[0] is delimiter */ 70#define REG_CLASS_ESCAPE 0x80000000 /* \ escapes in [...] */ 71 72#define REG_SHELL_DOT 0x00200000 /* explicit leading . match */ 73#define REG_SHELL_ESCAPED 0x00400000 /* \ not special */ 74#define REG_SHELL_GROUP 0x20000000 /* (|&) inside [@|&](...) only */ 75#define REG_SHELL_PATH 0x00800000 /* explicit / match */ 76 77#define REG_REGEXP 0x40000000 /* <regexp.h> compatibility */ 78 79/* regexec flags */ 80 81#define REG_NOTBOL 0x00000040 /* ^ is not a special char */ 82#define REG_NOTEOL 0x00000080 /* $ is not a special char */ 83 84/* nonstandard regexec flags */ 85 86#define REG_INVERT 0x01000000 /* invert regrexec match sense */ 87#define REG_STARTEND 0x02000000 /* subject==match[0].rm_{so,eo} */ 88#define REG_ADVANCE 0x04000000 /* advance match[0].rm_{so,eo} */ 89 90/* regalloc flags */ 91 92#define REG_NOFREE 0x00000001 /* don't free */ 93 94/* regsub flags */ 95 96#define REG_SUB_ALL 0x00000001 /* substitute all occurrences */ 97#define REG_SUB_LOWER 0x00000002 /* substitute to lower case */ 98#define REG_SUB_UPPER 0x00000004 /* substitute to upper case */ 99#define REG_SUB_PRINT 0x00000010 /* internal no-op */ 100#define REG_SUB_NUMBER 0x00000020 /* internal no-op */ 101#define REG_SUB_STOP 0x00000040 /* internal no-op */ 102#define REG_SUB_WRITE 0x00000080 /* internal no-op */ 103#define REG_SUB_LAST 0x00000100 /* last substitution option */ 104#define REG_SUB_FULL 0x00000200 /* fully delimited */ 105#define REG_SUB_USER 0x00001000 /* first user flag bit */ 106 107/* regex error codes */ 108 109#define REG_ENOSYS (-1) /* not supported */ 110#define REG_NOMATCH 1 /* regexec didn't match */ 111#define REG_BADPAT 2 /* invalid regular expression */ 112#define REG_ECOLLATE 3 /* invalid collation element */ 113#define REG_ECTYPE 4 /* invalid character class */ 114#define REG_EESCAPE 5 /* trailing \ in pattern */ 115#define REG_ESUBREG 6 /* invalid \digit backreference */ 116#define REG_EBRACK 7 /* [...] imbalance */ 117#define REG_EPAREN 8 /* \(...\) or (...) imbalance */ 118#define REG_EBRACE 9 /* \{...\} or {...} imbalance */ 119#define REG_BADBR 10 /* invalid {...} digits */ 120#define REG_ERANGE 11 /* invalid [...] range endpoint */ 121#define REG_ESPACE 12 /* out of space */ 122#define REG_BADRPT 13 /* unary op not preceded by re */ 123#define REG_ENULL 14 /* empty subexpr in pattern */ 124#define REG_ECOUNT 15 /* re component count overflow */ 125#define REG_BADESC 16 /* invalid \char escape */ 126#define REG_VERSIONID 17 /* version id (pseudo error) */ 127#define REG_EFLAGS 18 /* flags conflict */ 128#define REG_EDELIM 19 /* invalid or omitted delimiter */ 129#define REG_PANIC 20 /* unrecoverable internal error */ 130 131struct regex_s; typedef struct regex_s regex_t; 132struct regdisc_s; typedef struct regdisc_s regdisc_t; 133 134typedef int (*regclass_t)(int); 135typedef uint32_t regflags_t; 136typedef int (*regerror_t)(const regex_t*, regdisc_t*, int, ...); 137typedef void* (*regcomp_t)(const regex_t*, const char*, size_t, regdisc_t*); 138typedef int (*regexec_t)(const regex_t*, void*, const char*, size_t, const char*, size_t, char**, regdisc_t*); 139typedef void* (*regresize_t)(void*, void*, size_t); 140typedef int (*regrecord_t)(void*, const char*, size_t); 141 142#if ASTAPI(20120528) 143typedef ssize_t regoff_t; 144#else 145typedef int regoff_t; 146#endif 147 148typedef struct regmatch_s 149{ 150 regoff_t rm_so; /* offset of start */ 151 regoff_t rm_eo; /* offset of end */ 152} regmatch_t; 153 154typedef struct regsub_s 155{ 156 regflags_t re_flags; /* regsubcomp() flags */ 157 char* re_buf; /* regsubexec() output buffer */ 158 size_t re_len; /* re_buf length */ 159 int re_min; /* regsubcomp() min matches */ 160#ifdef _REG_SUB_PRIVATE_ 161 _REG_SUB_PRIVATE_ 162#endif 163} regsub_t; 164 165struct regdisc_s 166{ 167 unsigned long re_version; /* discipline version */ 168 regflags_t re_flags; /* discipline flags */ 169 regerror_t re_errorf; /* error function */ 170 int re_errorlevel; /* errorf level */ 171 regresize_t re_resizef; /* alloc/free function */ 172 void* re_resizehandle;/* resizef handle */ 173 regcomp_t re_compf; /* (?{...}) compile function */ 174 regexec_t re_execf; /* (?{...}) execute function */ 175 unsigned char* re_map; /* external to native ccode map */ 176}; 177 178typedef struct regstat_s 179{ 180 regflags_t re_flags; /* REG_* */ 181 ssize_t re_min; /* min anchored match length */ 182 ssize_t re_max; /* max anchored match length */ 183 ssize_t re_record; /* regrexec() match length */ 184 regflags_t re_info; /* REG_* info */ 185} regstat_t; 186 187struct regex_s 188{ 189 size_t re_nsub; /* number of subexpressions */ 190 struct reglib_s*re_info; /* library private info */ 191 size_t re_npat; /* number of pattern chars used */ 192 regdisc_t* re_disc; /* REG_DISCIPLINE discipline */ 193 regsub_t* re_sub; /* regsubcomp() data */ 194}; 195 196#define reginit(disc) (memset(disc,0,sizeof(*(disc))),(disc)->re_version=REG_VERSION) 197 198#if _BLD_ast && defined(__EXPORT__) 199#define extern __EXPORT__ 200#endif 201 202extern int regcomp(regex_t*, const char*, regflags_t); 203extern size_t regerror(int, const regex_t*, char*, size_t); 204extern int regexec(const regex_t*, const char*, size_t, regmatch_t*, regflags_t); 205extern void regfree(regex_t*); 206 207/* nonstandard hooks */ 208 209#define _REG_cache 1 /* have regcache() */ 210#define _REG_class 1 /* have regclass() */ 211#define _REG_collate 1 /* have regcollate(), regclass() */ 212#define _REG_comb 1 /* have regcomb() */ 213#define _REG_decomp 1 /* have regdecomp() */ 214#define _REG_dup 1 /* have regdup() */ 215#define _REG_fatal 1 /* have regfatal(), regfatalpat() */ 216#define _REG_ncomp 1 /* have regncomp() */ 217#define _REG_nexec 1 /* have regnexec() */ 218#define _REG_rexec 1 /* have regrexec(), regrecord() */ 219#define _REG_stat 1 /* have regstat() */ 220#define _REG_subcomp 1 /* have regsubcomp(), regsubexec() */ 221 222extern regclass_t regclass(const char*, char**); 223extern int regaddclass(const char*, regclass_t); 224extern int regcollate(const char*, char**, char*, size_t, wchar_t*); 225extern int regcomb(regex_t*, regex_t*); 226extern size_t regdecomp(regex_t*, regflags_t, char*, size_t); 227extern int regdup(regex_t*, regex_t*); 228extern int regncomp(regex_t*, const char*, size_t, regflags_t); 229extern int regnexec(const regex_t*, const char*, size_t, size_t, regmatch_t*, regflags_t); 230extern void regfatal(regex_t*, int, int); 231extern void regfatalpat(regex_t*, int, int, const char*); 232extern int regrecord(const regex_t*); 233extern int regrexec(const regex_t*, const char*, size_t, size_t, regmatch_t*, regflags_t, int, void*, regrecord_t); 234extern regstat_t* regstat(const regex_t*); 235 236extern regex_t* regcache(const char*, regflags_t, int*); 237 238extern int regsubcomp(regex_t*, const char*, const regflags_t*, int, regflags_t); 239extern int regsubexec(const regex_t*, const char*, size_t, regmatch_t*); 240extern int regsubflags(regex_t*, const char*, char**, int, const regflags_t*, int*, regflags_t*); 241extern void regsubfree(regex_t*); 242 243/* obsolete hooks */ 244 245#ifndef _SFIO_H 246struct _sfio_s; 247#endif 248 249extern void regalloc(void*, regresize_t, regflags_t); 250extern int regsub(const regex_t*, struct _sfio_s*, const char*, const char*, size_t, regmatch_t*, regflags_t); 251 252#undef extern 253 254#endif 255