331 lines
11 KiB
C++
331 lines
11 KiB
C++
/*
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*
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* Copyright (c) 1998-2002
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* John Maddock
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*
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* Use, modification and distribution are subject to the
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* Boost Software License, Version 1.0. (See accompanying file
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* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*
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*/
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/*
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* LOCATION: see http://www.boost.org for most recent version.
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* FILE cregex.cpp
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* VERSION see <boost/version.hpp>
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* DESCRIPTION: Declares POSIX API functions
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* + boost::RegEx high level wrapper.
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*/
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#ifndef BOOST_RE_CREGEX_HPP_INCLUDED
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#define BOOST_RE_CREGEX_HPP_INCLUDED
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#ifndef BOOST_REGEX_CONFIG_HPP
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#include <boost/regex/config.hpp>
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#endif
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#include <boost/regex/v4/match_flags.hpp>
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#include <boost/regex/v4/error_type.hpp>
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#ifdef __cplusplus
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#include <cstddef>
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#else
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#include <stddef.h>
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#endif
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#ifdef BOOST_MSVC
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#pragma warning(push)
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#pragma warning(disable: 4103)
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#endif
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_PREFIX
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#endif
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#ifdef BOOST_MSVC
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#pragma warning(pop)
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#endif
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/* include these defs only for POSIX compatablity */
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#ifdef __cplusplus
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namespace boost{
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extern "C" {
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#endif
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#if defined(__cplusplus) && !defined(BOOST_NO_STDC_NAMESPACE)
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typedef std::ptrdiff_t regoff_t;
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typedef std::size_t regsize_t;
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#else
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typedef ptrdiff_t regoff_t;
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typedef size_t regsize_t;
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#endif
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typedef struct
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{
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unsigned int re_magic;
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#ifdef __cplusplus
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std::size_t re_nsub; /* number of parenthesized subexpressions */
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#else
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size_t re_nsub;
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#endif
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const char* re_endp; /* end pointer for REG_PEND */
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void* guts; /* none of your business :-) */
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match_flag_type eflags; /* none of your business :-) */
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} regex_tA;
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#ifndef BOOST_NO_WREGEX
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typedef struct
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{
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unsigned int re_magic;
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#ifdef __cplusplus
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std::size_t re_nsub; /* number of parenthesized subexpressions */
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#else
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size_t re_nsub;
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#endif
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const wchar_t* re_endp; /* end pointer for REG_PEND */
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void* guts; /* none of your business :-) */
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match_flag_type eflags; /* none of your business :-) */
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} regex_tW;
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#endif
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typedef struct
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{
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regoff_t rm_so; /* start of match */
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regoff_t rm_eo; /* end of match */
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} regmatch_t;
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/* regcomp() flags */
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typedef enum{
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REG_BASIC = 0000,
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REG_EXTENDED = 0001,
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REG_ICASE = 0002,
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REG_NOSUB = 0004,
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REG_NEWLINE = 0010,
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REG_NOSPEC = 0020,
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REG_PEND = 0040,
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REG_DUMP = 0200,
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REG_NOCOLLATE = 0400,
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REG_ESCAPE_IN_LISTS = 01000,
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REG_NEWLINE_ALT = 02000,
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REG_PERLEX = 04000,
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REG_PERL = REG_EXTENDED | REG_NOCOLLATE | REG_ESCAPE_IN_LISTS | REG_PERLEX,
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REG_AWK = REG_EXTENDED | REG_ESCAPE_IN_LISTS,
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REG_GREP = REG_BASIC | REG_NEWLINE_ALT,
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REG_EGREP = REG_EXTENDED | REG_NEWLINE_ALT,
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REG_ASSERT = 15,
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REG_INVARG = 16,
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REG_ATOI = 255, /* convert name to number (!) */
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REG_ITOA = 0400 /* convert number to name (!) */
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} reg_comp_flags;
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/* regexec() flags */
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typedef enum{
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REG_NOTBOL = 00001,
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REG_NOTEOL = 00002,
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REG_STARTEND = 00004
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} reg_exec_flags;
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/*
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* POSIX error codes:
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*/
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typedef unsigned reg_error_t;
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typedef reg_error_t reg_errcode_t; /* backwards compatibility */
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static const reg_error_t REG_NOERROR = 0; /* Success. */
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static const reg_error_t REG_NOMATCH = 1; /* Didn't find a match (for regexec). */
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/* POSIX regcomp return error codes. (In the order listed in the
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standard.) */
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static const reg_error_t REG_BADPAT = 2; /* Invalid pattern. */
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static const reg_error_t REG_ECOLLATE = 3; /* Undefined collating element. */
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static const reg_error_t REG_ECTYPE = 4; /* Invalid character class name. */
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static const reg_error_t REG_EESCAPE = 5; /* Trailing backslash. */
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static const reg_error_t REG_ESUBREG = 6; /* Invalid back reference. */
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static const reg_error_t REG_EBRACK = 7; /* Unmatched left bracket. */
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static const reg_error_t REG_EPAREN = 8; /* Parenthesis imbalance. */
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static const reg_error_t REG_EBRACE = 9; /* Unmatched \{. */
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static const reg_error_t REG_BADBR = 10; /* Invalid contents of \{\}. */
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static const reg_error_t REG_ERANGE = 11; /* Invalid range end. */
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static const reg_error_t REG_ESPACE = 12; /* Ran out of memory. */
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static const reg_error_t REG_BADRPT = 13; /* No preceding re for repetition op. */
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static const reg_error_t REG_EEND = 14; /* unexpected end of expression */
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static const reg_error_t REG_ESIZE = 15; /* expression too big */
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static const reg_error_t REG_ERPAREN = 8; /* = REG_EPAREN : unmatched right parenthesis */
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static const reg_error_t REG_EMPTY = 17; /* empty expression */
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static const reg_error_t REG_E_MEMORY = 15; /* = REG_ESIZE : out of memory */
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static const reg_error_t REG_ECOMPLEXITY = 18; /* complexity too high */
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static const reg_error_t REG_ESTACK = 19; /* out of stack space */
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static const reg_error_t REG_E_PERL = 20; /* Perl (?...) error */
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static const reg_error_t REG_E_UNKNOWN = 21; /* unknown error */
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static const reg_error_t REG_ENOSYS = 21; /* = REG_E_UNKNOWN : Reserved. */
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BOOST_REGEX_DECL int BOOST_REGEX_CCALL regcompA(regex_tA*, const char*, int);
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BOOST_REGEX_DECL regsize_t BOOST_REGEX_CCALL regerrorA(int, const regex_tA*, char*, regsize_t);
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BOOST_REGEX_DECL int BOOST_REGEX_CCALL regexecA(const regex_tA*, const char*, regsize_t, regmatch_t*, int);
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BOOST_REGEX_DECL void BOOST_REGEX_CCALL regfreeA(regex_tA*);
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#ifndef BOOST_NO_WREGEX
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BOOST_REGEX_DECL int BOOST_REGEX_CCALL regcompW(regex_tW*, const wchar_t*, int);
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BOOST_REGEX_DECL regsize_t BOOST_REGEX_CCALL regerrorW(int, const regex_tW*, wchar_t*, regsize_t);
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BOOST_REGEX_DECL int BOOST_REGEX_CCALL regexecW(const regex_tW*, const wchar_t*, regsize_t, regmatch_t*, int);
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BOOST_REGEX_DECL void BOOST_REGEX_CCALL regfreeW(regex_tW*);
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#endif
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#ifdef UNICODE
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#define regcomp regcompW
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#define regerror regerrorW
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#define regexec regexecW
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#define regfree regfreeW
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#define regex_t regex_tW
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#else
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#define regcomp regcompA
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#define regerror regerrorA
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#define regexec regexecA
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#define regfree regfreeA
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#define regex_t regex_tA
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#endif
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#ifdef BOOST_MSVC
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#pragma warning(push)
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#pragma warning(disable: 4103)
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#endif
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_SUFFIX
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#endif
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#ifdef BOOST_MSVC
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#pragma warning(pop)
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#endif
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#ifdef __cplusplus
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} /* extern "C" */
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} /* namespace */
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#endif
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#if defined(__cplusplus)
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/*
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* C++ high level wrapper goes here:
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*/
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#include <string>
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#include <vector>
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namespace boost{
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#ifdef BOOST_MSVC
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#pragma warning(push)
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#pragma warning(disable: 4103)
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#endif
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_PREFIX
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#endif
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#ifdef BOOST_MSVC
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#pragma warning(pop)
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#endif
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class RegEx;
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namespace BOOST_REGEX_DETAIL_NS{
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class RegExData;
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struct pred1;
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struct pred2;
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struct pred3;
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struct pred4;
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} /* namespace BOOST_REGEX_DETAIL_NS */
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#if (defined(BOOST_MSVC) || defined(__BORLANDC__)) && !defined(BOOST_DISABLE_WIN32)
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typedef bool (__cdecl *GrepCallback)(const RegEx& expression);
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typedef bool (__cdecl *GrepFileCallback)(const char* file, const RegEx& expression);
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typedef bool (__cdecl *FindFilesCallback)(const char* file);
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#else
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typedef bool (*GrepCallback)(const RegEx& expression);
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typedef bool (*GrepFileCallback)(const char* file, const RegEx& expression);
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typedef bool (*FindFilesCallback)(const char* file);
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#endif
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class BOOST_REGEX_DECL RegEx
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{
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private:
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BOOST_REGEX_DETAIL_NS::RegExData* pdata;
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public:
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RegEx();
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RegEx(const RegEx& o);
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~RegEx();
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explicit RegEx(const char* c, bool icase = false);
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explicit RegEx(const std::string& s, bool icase = false);
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RegEx& operator=(const RegEx& o);
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RegEx& operator=(const char* p);
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RegEx& operator=(const std::string& s){ return this->operator=(s.c_str()); }
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unsigned int SetExpression(const char* p, bool icase = false);
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unsigned int SetExpression(const std::string& s, bool icase = false){ return SetExpression(s.c_str(), icase); }
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std::string Expression()const;
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unsigned int error_code()const;
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/*
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* now matching operators:
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*/
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bool Match(const char* p, match_flag_type flags = match_default);
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bool Match(const std::string& s, match_flag_type flags = match_default) { return Match(s.c_str(), flags); }
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bool Search(const char* p, match_flag_type flags = match_default);
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bool Search(const std::string& s, match_flag_type flags = match_default) { return Search(s.c_str(), flags); }
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unsigned int Grep(GrepCallback cb, const char* p, match_flag_type flags = match_default);
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unsigned int Grep(GrepCallback cb, const std::string& s, match_flag_type flags = match_default) { return Grep(cb, s.c_str(), flags); }
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unsigned int Grep(std::vector<std::string>& v, const char* p, match_flag_type flags = match_default);
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unsigned int Grep(std::vector<std::string>& v, const std::string& s, match_flag_type flags = match_default) { return Grep(v, s.c_str(), flags); }
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unsigned int Grep(std::vector<std::size_t>& v, const char* p, match_flag_type flags = match_default);
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unsigned int Grep(std::vector<std::size_t>& v, const std::string& s, match_flag_type flags = match_default) { return Grep(v, s.c_str(), flags); }
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#ifndef BOOST_REGEX_NO_FILEITER
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unsigned int GrepFiles(GrepFileCallback cb, const char* files, bool recurse = false, match_flag_type flags = match_default);
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unsigned int GrepFiles(GrepFileCallback cb, const std::string& files, bool recurse = false, match_flag_type flags = match_default) { return GrepFiles(cb, files.c_str(), recurse, flags); }
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unsigned int FindFiles(FindFilesCallback cb, const char* files, bool recurse = false, match_flag_type flags = match_default);
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unsigned int FindFiles(FindFilesCallback cb, const std::string& files, bool recurse = false, match_flag_type flags = match_default) { return FindFiles(cb, files.c_str(), recurse, flags); }
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#endif
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std::string Merge(const std::string& in, const std::string& fmt,
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bool copy = true, match_flag_type flags = match_default);
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std::string Merge(const char* in, const char* fmt,
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bool copy = true, match_flag_type flags = match_default);
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std::size_t Split(std::vector<std::string>& v, std::string& s, match_flag_type flags = match_default, unsigned max_count = ~0);
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/*
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* now operators for returning what matched in more detail:
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*/
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std::size_t Position(int i = 0)const;
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std::size_t Length(int i = 0)const;
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bool Matched(int i = 0)const;
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std::size_t Marks()const;
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std::string What(int i = 0)const;
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std::string operator[](int i)const { return What(i); }
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static const std::size_t npos;
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friend struct BOOST_REGEX_DETAIL_NS::pred1;
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friend struct BOOST_REGEX_DETAIL_NS::pred2;
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friend struct BOOST_REGEX_DETAIL_NS::pred3;
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friend struct BOOST_REGEX_DETAIL_NS::pred4;
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};
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#ifdef BOOST_MSVC
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#pragma warning(push)
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#pragma warning(disable: 4103)
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#endif
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_SUFFIX
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#endif
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#ifdef BOOST_MSVC
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#pragma warning(pop)
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#endif
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} /* namespace boost */
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#endif /* __cplusplus */
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#endif /* include guard */
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