/* This may look like C code, but it is really -*- C++ -*- */ /* Provides an Iterator for keyword characters. Copyright (C) 1989-1998 Free Software Foundation, Inc. written by Douglas C. Schmidt (schmidt@ics.uci.edu) This file is part of GNU GPERF. GNU GPERF is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 1, or (at your option) any later version. GNU GPERF 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 General Public License for more details. You should have received a copy of the GNU General Public License along with GNU GPERF; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* Provides an Iterator that expands and decodes a control string containing digits and ranges, returning an integer every time the generator function is called. This is used to decode the user's key position requests. For example: "-k 1,2,5-10,$" will return 1, 2, 5, 6, 7, 8, 9, 10, and 0 ( representing the abstract ``last character of the key'' on successive calls to the member function operator (). No errors are handled in these routines, they are passed back to the calling routines via a user-supplied Error_Value */ #ifndef iterator_h #define iterator_h 1 class Iterator { private: const char *str; /* A pointer to the string provided by the user. */ int end; /* Value returned after last key is processed. */ int end_word; /* A value marking the abstract ``end of word'' ( usually '$'). */ int error_value; /* Error value returned when input is syntactically erroneous. */ int hi_bound; /* Greatest possible value, inclusive. */ int lo_bound; /* Smallest possible value, inclusive. */ public: Iterator (const char *s, int lo, int hi, int word_end, int bad_val, int key_end); int operator () (void); }; #endif