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 <stdio.h>
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26 | #include "UCArray.h"
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27 |
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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<unsigned long> levelStarts;
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48 | unsigned long numFrags;
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49 | unsigned 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, unsigned long levelPtr,
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55 | unsigned long _numFrags, unsigned long _numLevelDocs);
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56 |
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57 | bool FragToLevel (unsigned long fragNum, unsigned 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 | unsigned long levelNum, unsigned 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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