1 | /**********************************************************************
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2 | *
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3 | * converter.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 CONVERTER_H
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28 | #define CONVERTER_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 | #include "gsdlunicode.h"
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34 |
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35 | #if defined(GSDL_USE_OBJECTSPACE)
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36 | # include <ospace\std\map>
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37 | #elif defined(GSDL_USE_STL_H)
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38 | # include <map.h>
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39 | #else
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40 | # include <map>
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41 | #endif
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42 |
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43 |
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44 | // inconverter and outconverter ARE NOT destroyed by this class
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45 | // they should be destroyed by the code which created them after
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46 | // no more pointers to the class exist.
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47 | //
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48 | // The above condition enables the class to be copied without
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49 | // copying the converters which might contain a lot of data (and
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50 | // be of an unknown derived type).
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51 | class converterinfo {
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52 | public:
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53 | text_t name;
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54 | inconvertclass *inconverter;
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55 | rzwsoutconvertclass *outconverter;
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56 |
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57 | converterinfo() {inconverter=NULL; outconverter=NULL;}
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58 | };
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59 |
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60 | bool operator==(const converterinfo &x, const converterinfo &y);
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61 | bool operator<(const converterinfo &x, const converterinfo &y);
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62 |
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63 |
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64 | typedef map<text_t, converterinfo, lttext_t> convertmap;
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65 |
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66 | // convertinfoclass is used to store a number of converters
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67 | // indexing them by their name
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68 | class convertinfoclass {
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69 | protected:
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70 | convertmap converters;
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71 |
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72 | public:
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73 | // type support for convertmap
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74 | typedef convertmap::iterator iterator;
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75 | typedef convertmap::const_iterator const_iterator;
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76 | typedef convertmap::reference reference;
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77 | typedef convertmap::const_reference const_reference;
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78 | typedef convertmap::size_type size_type;
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79 | typedef convertmap::difference_type difference_type;
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80 | typedef convertmap::const_reverse_iterator const_reverse_iterator;
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81 | typedef convertmap::reverse_iterator reverse_iterator;
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82 |
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83 | // constructors
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84 | convertinfoclass () {}
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85 |
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86 | // basic container support
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87 | iterator begin () {return converters.begin();}
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88 | const_iterator begin () const {return converters.begin();}
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89 | iterator end () {return converters.end();}
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90 | const_iterator end () const {return converters.end();}
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91 |
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92 | void erase(iterator pos) {converters.erase(pos);}
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93 | void erase(iterator first, iterator last) {converters.erase(first, last);}
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94 | convertinfoclass &operator=(const convertinfoclass &x)
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95 | {converters=x.converters;return *this;}
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96 |
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97 | bool empty () const {return converters.empty();}
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98 | size_type size() const {return converters.size();}
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99 |
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100 | const_iterator find(text_t &key) {return converters.find(key);}
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101 |
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102 | // added functionality
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103 | void clear () {converters.erase(converters.begin(),converters.end());}
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104 |
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105 | // the converters within converterinfo become the property of
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106 | // of this class after add_converter has been called. The converters
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107 | // remain the responsability of the calling code and will not be
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108 | // deleted by this class.
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109 | void add_converter (const text_t &name, inconvertclass *inconverter,
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110 | rzwsoutconvertclass *outconverter);
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111 |
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112 | // get_inconverter will return NULL if the convert could not be found
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113 | inconvertclass *get_inconverter (const text_t &name);
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114 |
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115 | // get_outconverter will return NULL if the convert could not be found
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116 | rzwsoutconvertclass *get_outconverter (const text_t &name);
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117 | };
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118 |
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119 |
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120 |
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121 |
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122 | #endif
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