| 1 | /**********************************************************************
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| 2 | *
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| 3 | * maptools.h --
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| 4 | * Copyright (C) 1999 The New Zealand Digital Library Project
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| 5 | *
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| 6 | * A component of the Greenstone digital library software
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| 7 | * from the New Zealand Digital Library Project at the
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| 8 | * University of Waikato, New Zealand.
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| 9 | *
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| 10 | * This program is free software; you can redistribute it and/or modify
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| 11 | * it under the terms of the GNU General Public License as published by
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| 12 | * the Free Software Foundation; either version 2 of the License, or
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| 13 | * (at your option) any later version.
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| 14 | *
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| 15 | * This program is distributed in the hope that it will be useful,
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | * GNU General Public License for more details.
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| 19 | *
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| 20 | * You should have received a copy of the GNU General Public License
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| 21 | * along with this program; if not, write to the Free Software
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| 22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | *
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| 24 | *********************************************************************/
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| 25 |
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| 26 |
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| 27 | #ifndef MAPTOOLS_H
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| 28 | #define MAPTOOLS_H
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| 29 |
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| 30 |
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| 31 | #include "gsdlconf.h"
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| 32 | #include "text_t.h"
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| 33 |
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| 34 | // stringmap is a mapping which remembers the original order
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| 35 | // of the map, but is very fast to look up.
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| 36 | class stringmap {
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| 37 | protected:
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| 38 | text_tarray fromorder;
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| 39 | text_tmap mapfrom;
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| 40 |
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| 41 | public:
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| 42 | void clear ();
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| 43 |
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| 44 | void importmap (const text_tarray &maparray);
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| 45 | void importmap (const text_tarray &maparray, bool keepold);
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| 46 | void exportmap (text_tarray &maparray) const;
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| 47 |
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| 48 | void getfromarray (text_tarray &fromarray) const;
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| 49 | void gettoarray (text_tarray &toarray) const;
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| 50 |
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| 51 | bool fromexists (const text_t &from) const;
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| 52 | bool toexists (const text_t &to) const;
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| 53 |
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| 54 | // from2to and to2from return false if the key (the "from"
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| 55 | // field or the "to" field) cannot be found
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| 56 | bool from2to (const text_t &from, text_t &to) const;
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| 57 | bool to2from (const text_t &to, text_t &from) const;
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| 58 | };
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| 59 |
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| 60 |
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| 61 | // a few useful functions used by stringmap
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| 62 | void splitmapentry (const text_t &mapentry, text_t &from, text_t &to);
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| 63 | void joinmapentry (const text_t &from, const text_t &to, text_t &mapentry);
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| 64 |
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| 65 |
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| 66 | #endif
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