Regex.h
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上传日期:2007-01-06
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- // This may look like C code, but it is really -*- C++ -*-
- /*
- Copyright (C) 1988 Free Software Foundation
- written by Doug Lea (dl@rocky.oswego.edu)
- This file is part of the GNU C++ Library. This library is free
- software; you can redistribute it and/or modify it under the terms of
- the GNU Library General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
- option) any later version. This library is distributed in the hope
- that it will be useful, but WITHOUT ANY WARRANTY; without even the
- implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- PURPOSE. See the GNU Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #ifndef _Regex_h
- #ifdef __GNUG__
- #pragma interface
- #endif
- #define _Regex_h 1
- #if defined(SHORT_NAMES) || defined(VMS)
- #define re_compile_pattern recmppat
- #define re_pattern_buffer repatbuf
- #define re_registers reregs
- #endif
- struct re_pattern_buffer; // defined elsewhere
- struct re_registers;
- class Regex
- {
- private:
- Regex(const Regex&) {} // no X(X&)
- void operator = (const Regex&) {} // no assignment
- protected:
- re_pattern_buffer* buf;
- re_registers* reg;
- public:
- Regex(const char* t,
- int fast = 0,
- int bufsize = 40,
- const char* transtable = 0);
- ~Regex();
- int match(const char* s, int len, int pos = 0) const;
- int search(const char* s, int len,
- int& matchlen, int startpos = 0) const;
- int match_info(int& start, int& length, int nth = 0) const;
- int OK() const; // representation invariant
- };
- // some built in regular expressions
- extern const Regex RXwhite; // = "[ ntrvf]+"
- extern const Regex RXint; // = "-?[0-9]+"
- extern const Regex RXdouble; // = "-?\(\([0-9]+\.[0-9]*\)\|
- // \([0-9]+\)\|\(\.[0-9]+\)\)
- // \([eE][---+]?[0-9]+\)?"
- extern const Regex RXalpha; // = "[A-Za-z]+"
- extern const Regex RXlowercase; // = "[a-z]+"
- extern const Regex RXuppercase; // = "[A-Z]+"
- extern const Regex RXalphanum; // = "[0-9A-Za-z]+"
- extern const Regex RXidentifier; // = "[A-Za-z_][A-Za-z0-9_]*"
- #endif