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Diffstat (limited to 'src/lib/libast/include/regex.h')
| -rw-r--r-- | src/lib/libast/include/regex.h | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/src/lib/libast/include/regex.h b/src/lib/libast/include/regex.h new file mode 100644 index 0000000..8b357fe --- /dev/null +++ b/src/lib/libast/include/regex.h @@ -0,0 +1,248 @@ +/*********************************************************************** +* * +* This software is part of the ast package * +* Copyright (c) 1985-2011 AT&T Intellectual Property * +* and is licensed under the * +* Eclipse Public License, Version 1.0 * +* by AT&T Intellectual Property * +* * +* A copy of the License is available at * +* http://www.eclipse.org/org/documents/epl-v10.html * +* (with md5 checksum b35adb5213ca9657e911e9befb180842) * +* * +* Information and Software Systems Research * +* AT&T Research * +* Florham Park NJ * +* * +* Glenn Fowler <gsf@research.att.com> * +* David Korn <dgk@research.att.com> * +* Phong Vo <kpv@research.att.com> * +* * +***********************************************************************/ +#pragma prototyped + +/* + * regex library interface + */ + +#ifdef _AST_STD_I +#define _REGEX_H -1 +#define regex_t int +#define regmatch_t int +#endif +#ifndef _REGEX_H +#define _REGEX_H 1 +#undef regex_t +#undef regmatch_t + +#include <ast_common.h> +#include <ast_wchar.h> + +#define REG_VERSION 20100930L + +/* regcomp flags */ + +#define REG_AUGMENTED 0x00000001 /* enable ! & < > */ +#define REG_EXTENDED 0x00000002 /* enable ( | ) */ +#define REG_ICASE 0x00000004 /* ignore case in match */ +#define REG_NEWLINE 0x00000008 /* ^/$ match embedded \n */ +#define REG_NOSUB 0x00000010 /* don't report subexp matches */ +#define REG_SHELL 0x00000020 /* shell pattern syntax */ + +/* nonstandard regcomp flags */ + +#define REG_LEFT 0x00000100 /* implicit ^... */ +#define REG_LITERAL 0x00000200 /* no operators */ +#define REG_MINIMAL 0x00000400 /* minimal match */ +#define REG_NULL 0x00000800 /* allow null patterns */ +#define REG_RIGHT 0x00001000 /* implicit ...$ */ +#define REG_LENIENT 0x00002000 /* look the other way */ +#define REG_ESCAPE 0x00004000 /* \ escapes delimiter in [...] */ +#define REG_FIRST 0x00008000 /* first match found will do */ +#define REG_MULTIPLE 0x00010000 /* multiple \n sep patterns */ +#define REG_DISCIPLINE 0x00020000 /* regex_t.re_disc is valid */ +#define REG_SPAN 0x00040000 /* . matches \n */ +#define REG_COMMENT 0x00080000 /* ignore pattern space & #...\n*/ +#define REG_MULTIREF 0x00100000 /* multiple digit backrefs */ +#define REG_MUSTDELIM 0x08000000 /* all delimiters required */ +#define REG_DELIMITED 0x10000000 /* pattern[0] is delimiter */ +#define REG_CLASS_ESCAPE 0x80000000 /* \ escapes in [...] */ + +#define REG_SHELL_DOT 0x00200000 /* explicit leading . match */ +#define REG_SHELL_ESCAPED 0x00400000 /* \ not special */ +#define REG_SHELL_GROUP 0x20000000 /* (|&) inside [@|&](...) only */ +#define REG_SHELL_PATH 0x00800000 /* explicit / match */ + +#define REG_REGEXP 0x40000000 /* <regexp.h> compatibility */ + +/* regexec flags */ + +#define REG_NOTBOL 0x00000040 /* ^ is not a special char */ +#define REG_NOTEOL 0x00000080 /* $ is not a special char */ + +/* nonstandard regexec flags */ + +#define REG_INVERT 0x01000000 /* invert regrexec match sense */ +#define REG_STARTEND 0x02000000 /* subject==match[0].rm_{so,eo} */ +#define REG_ADVANCE 0x04000000 /* advance match[0].rm_{so,eo} */ + +/* regalloc flags */ + +#define REG_NOFREE 0x00000001 /* don't free */ + +/* regsub flags */ + +#define REG_SUB_ALL 0x00000001 /* substitute all occurrences */ +#define REG_SUB_LOWER 0x00000002 /* substitute to lower case */ +#define REG_SUB_UPPER 0x00000004 /* substitute to upper case */ +#define REG_SUB_PRINT 0x00000010 /* internal no-op */ +#define REG_SUB_NUMBER 0x00000020 /* internal no-op */ +#define REG_SUB_STOP 0x00000040 /* internal no-op */ +#define REG_SUB_WRITE 0x00000080 /* internal no-op */ +#define REG_SUB_LAST 0x00000100 /* last substitution option */ +#define REG_SUB_FULL 0x00000200 /* fully delimited */ +#define REG_SUB_USER 0x00001000 /* first user flag bit */ + +/* regex error codes */ + +#define REG_ENOSYS (-1) /* not supported */ +#define REG_NOMATCH 1 /* regexec didn't match */ +#define REG_BADPAT 2 /* invalid regular expression */ +#define REG_ECOLLATE 3 /* invalid collation element */ +#define REG_ECTYPE 4 /* invalid character class */ +#define REG_EESCAPE 5 /* trailing \ in pattern */ +#define REG_ESUBREG 6 /* invalid \digit backreference */ +#define REG_EBRACK 7 /* [...] imbalance */ +#define REG_EPAREN 8 /* \(...\) or (...) imbalance */ +#define REG_EBRACE 9 /* \{...\} or {...} imbalance */ +#define REG_BADBR 10 /* invalid {...} digits */ +#define REG_ERANGE 11 /* invalid [...] range endpoint */ +#define REG_ESPACE 12 /* out of space */ +#define REG_BADRPT 13 /* unary op not preceded by re */ +#define REG_ENULL 14 /* empty subexpr in pattern */ +#define REG_ECOUNT 15 /* re component count overflow */ +#define REG_BADESC 16 /* invalid \char escape */ +#define REG_VERSIONID 17 /* version id (pseudo error) */ +#define REG_EFLAGS 18 /* flags conflict */ +#define REG_EDELIM 19 /* invalid or omitted delimiter */ +#define REG_PANIC 20 /* unrecoverable internal error */ + +struct regex_s; typedef struct regex_s regex_t; +struct regdisc_s; typedef struct regdisc_s regdisc_t; + +typedef int (*regclass_t)(int); +typedef uint32_t regflags_t; +typedef int regoff_t; +typedef int (*regerror_t)(const regex_t*, regdisc_t*, int, ...); +typedef void* (*regcomp_t)(const regex_t*, const char*, size_t, regdisc_t*); +typedef int (*regexec_t)(const regex_t*, void*, const char*, size_t, const char*, size_t, char**, regdisc_t*); +typedef void* (*regresize_t)(void*, void*, size_t); +typedef int (*regrecord_t)(void*, const char*, size_t); + +typedef struct regmatch_s +{ + regoff_t rm_so; /* offset of start */ + regoff_t rm_eo; /* offset of end */ +} regmatch_t; + +typedef struct regsub_s +{ + regflags_t re_flags; /* regsubcomp() flags */ + char* re_buf; /* regsubexec() output buffer */ + size_t re_len; /* re_buf length */ + int re_min; /* regsubcomp() min matches */ +#ifdef _REG_SUB_PRIVATE_ + _REG_SUB_PRIVATE_ +#endif +} regsub_t; + +struct regdisc_s +{ + unsigned long re_version; /* discipline version */ + regflags_t re_flags; /* discipline flags */ + regerror_t re_errorf; /* error function */ + int re_errorlevel; /* errorf level */ + regresize_t re_resizef; /* alloc/free function */ + void* re_resizehandle;/* resizef handle */ + regcomp_t re_compf; /* (?{...}) compile function */ + regexec_t re_execf; /* (?{...}) execute function */ + unsigned char* re_map; /* external to native ccode map */ +}; + +typedef struct regstat_s +{ + regflags_t re_flags; /* REG_* */ + ssize_t re_min; /* min anchored match length */ + ssize_t re_max; /* max anchored match length */ + ssize_t re_record; /* regrexec() match length */ + regflags_t re_info; /* REG_* info */ +} regstat_t; + +struct regex_s +{ + size_t re_nsub; /* number of subexpressions */ + struct reglib_s*re_info; /* library private info */ + size_t re_npat; /* number of pattern chars used */ + regdisc_t* re_disc; /* REG_DISCIPLINE discipline */ + regsub_t* re_sub; /* regsubcomp() data */ +}; + +#define reginit(disc) (memset(disc,0,sizeof(*(disc))),(disc)->re_version=REG_VERSION) + +#if _BLD_ast && defined(__EXPORT__) +#define extern __EXPORT__ +#endif + +extern int regcomp(regex_t*, const char*, regflags_t); +extern size_t regerror(int, const regex_t*, char*, size_t); +extern int regexec(const regex_t*, const char*, size_t, regmatch_t*, regflags_t); +extern void regfree(regex_t*); + +/* nonstandard hooks */ + +#define _REG_cache 1 /* have regcache() */ +#define _REG_class 1 /* have regclass() */ +#define _REG_collate 1 /* have regcollate(), regclass() */ +#define _REG_comb 1 /* have regcomb() */ +#define _REG_decomp 1 /* have regdecomp() */ +#define _REG_dup 1 /* have regdup() */ +#define _REG_fatal 1 /* have regfatal(), regfatalpat() */ +#define _REG_ncomp 1 /* have regncomp() */ +#define _REG_nexec 1 /* have regnexec() */ +#define _REG_rexec 1 /* have regrexec(), regrecord() */ +#define _REG_stat 1 /* have regstat() */ +#define _REG_subcomp 1 /* have regsubcomp(), regsubexec() */ + +extern regclass_t regclass(const char*, char**); +extern int regaddclass(const char*, regclass_t); +extern int regcollate(const char*, char**, char*, size_t, wchar_t*); +extern int regcomb(regex_t*, regex_t*); +extern size_t regdecomp(regex_t*, regflags_t, char*, size_t); +extern int regdup(regex_t*, regex_t*); +extern int regncomp(regex_t*, const char*, size_t, regflags_t); +extern int regnexec(const regex_t*, const char*, size_t, size_t, regmatch_t*, regflags_t); +extern void regfatal(regex_t*, int, int); +extern void regfatalpat(regex_t*, int, int, const char*); +extern int regrecord(const regex_t*); +extern int regrexec(const regex_t*, const char*, size_t, size_t, regmatch_t*, regflags_t, int, void*, regrecord_t); +extern regstat_t* regstat(const regex_t*); + +extern regex_t* regcache(const char*, regflags_t, int*); + +extern int regsubcomp(regex_t*, const char*, const regflags_t*, int, regflags_t); +extern int regsubexec(const regex_t*, const char*, size_t, regmatch_t*); +extern int regsubflags(regex_t*, const char*, char**, int, const regflags_t*, int*, regflags_t*); +extern void regsubfree(regex_t*); + +/* obsolete hooks */ + +#ifndef _SFIO_H +struct _sfio_s; +#endif + +extern void regalloc(void*, regresize_t, regflags_t); +extern int regsub(const regex_t*, struct _sfio_s*, const char*, const char*, size_t, regmatch_t*, regflags_t); + +#undef extern + +#endif |