77 lines
2.5 KiB
C++
77 lines
2.5 KiB
C++
// This may look like C code, but it is really -*- C++ -*-
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/*
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Copyright (C) 1988 Free Software Foundation
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written by Doug Lea (dl@rocky.oswego.edu)
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This file is part of GNU CC.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY. No author or distributor
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accepts responsibility to anyone for the consequences of using it
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or for whether it serves any particular purpose or works at all,
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unless he says so in writing. Refer to the GNU CC General Public
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License for full details.
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Everyone is granted permission to copy, modify and redistribute
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GNU CC, but only under the conditions described in the
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GNU CC General Public License. A copy of this license is
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supposed to have been given to you along with GNU CC so you
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can know your rights and responsibilities. It should be in a
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file named COPYING. Among other things, the copyright notice
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and this notice must be preserved on all copies.
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*/
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#ifndef _Regex_h
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#ifdef __GNUG__
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#pragma once
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#pragma interface
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#endif
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#define _Regex_h 1
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struct re_pattern_buffer; // defined elsewhere
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struct re_registers;
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class Regex
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{
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private:
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Regex(const Regex&) {} // no X(X&)
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void operator = (const Regex&) {} // no assignment
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protected:
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re_pattern_buffer* buf;
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re_registers* reg;
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public:
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Regex(const char* t,
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int fast = 0,
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int bufsize = 40,
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const char* transtable = 0);
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~Regex();
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int match(const char* s, int len, int pos = 0) const;
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int search(const char* s, int len,
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int& matchlen, int startpos = 0) const;
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int match_info(int& start, int& length, int nth = 0) const;
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int OK() const; // representation invariant
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};
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// some built in regular expressions
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extern const Regex RXwhite; // = "[ \n\t\r\v\f]+"
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extern const Regex RXint; // = "-?[0-9]+"
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extern const Regex RXdouble; // = "-?\\(\\([0-9]+\\.[0-9]*\\)\\|
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// \\([0-9]+\\)\\|\\(\\.[0-9]+\\)\\)
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// \\([eE][---+]?[0-9]+\\)?"
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extern const Regex RXalpha; // = "[A-Za-z]+"
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extern const Regex RXlowercase; // = "[a-z]+"
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extern const Regex RXuppercase; // = "[A-Z]+"
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extern const Regex RXalphanum; // = "[0-9A-Za-z]+"
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extern const Regex RXidentifier; // = "[A-Za-z_][A-Za-z0-9_]*"
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#endif
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