| 1 | /**************************************************************************
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| 2 | *
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| 3 | * FragLevelConvert.h -- converting between fragment and document numbers
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| 4 | * Copyright (C) 1999 Rodger McNab
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 2 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 | *
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| 20 | **************************************************************************/
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| 21 |
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| 22 | #ifndef FRAGLEVELCONVERT_H
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| 23 | #define FRAGLEVELCONVERT_H
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| 24 |
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| 25 | #include "mglong.h"
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| 26 | #include <stdio.h>
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| 27 | #include "UCArray.h"
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| 28 |
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| 29 | /*Notes about levelStarts (kjm18) - this is my interpretation of
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| 30 | whats going on, feel free to correct this if its wrong.
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| 31 |
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| 32 | say you have 5 docs, consisting of fragments:
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| 33 | 1: 1-55
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| 34 | 2: 56-83
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| 35 | 3: 84-106
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| 36 | 4: 107-152
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| 37 | 5: 153-211
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| 38 |
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| 39 | then levelStarts would have the values
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| 40 | 0 1 2 3 4 5
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| 41 | 0 55 83 106 152 211
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| 42 |
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| 43 | */
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| 44 | class FragLevelConvert {
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| 45 | protected:
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| 46 | // note fragment start is one before before real start
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| 47 | vector<mg_u_long> levelStarts;
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| 48 | mg_u_long numFrags;
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| 49 | mg_u_long numLevelDocs;
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| 50 |
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| 51 | public:
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| 52 | FragLevelConvert ();
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| 53 |
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| 54 | bool Read (FILE *invfFile, mg_u_long levelPtr,
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| 55 | mg_u_long _numFrags, mg_u_long _numLevelDocs);
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| 56 |
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| 57 | bool FragToLevel (mg_u_long fragNum, mg_u_long &levelDocNum) const;
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| 58 |
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| 59 | // this function converts from one level number to another
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| 60 | // the FragLevelConvert thats calling the method should be loaded with
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| 61 | // the level that you want to convert to, while the sectionLevelConvert
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| 62 | // should be loaded with the level converting from.
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| 63 | // level Num has the old level, DocNum will be returned with the new
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| 64 | // coresponding level
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| 65 | bool LevelToLevel (FragLevelConvert sectionLevelConvert,
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| 66 | mg_u_long levelNum, mg_u_long &DocNum);
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| 67 | };
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| 68 |
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| 69 |
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| 70 | #endif
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