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1 // Copyright (C) 2000 Bruce Guenter <bruceg@em.ca> |
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2 // |
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3 // This program is free software; you can redistribute it and/or modify |
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4 // it under the terms of the GNU General Public License as published by |
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5 // the Free Software Foundation; either version 2 of the License, or |
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6 // (at your option) any later version. |
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7 // |
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8 // This program is distributed in the hope that it will be useful, |
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9 // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 // GNU General Public License for more details. |
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12 // |
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13 // You should have received a copy of the GNU General Public License |
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14 // along with this program; if not, write to the Free Software |
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15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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16 |
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17 #include <config.h> |
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18 #include "vpwtable.h" |
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19 #include <stdlib.h> |
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20 #include <gdbm.h> |
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21 |
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22 class gdbm_vpwtable_reader : public vpwtable_reader |
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23 { |
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24 private: |
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25 GDBM_FILE dbf; |
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26 datum key; |
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27 public: |
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28 gdbm_vpwtable_reader(const mystring& filename); |
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29 ~gdbm_vpwtable_reader(); |
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30 bool operator!() const; |
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31 bool get(vpwentry& out); |
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32 bool rewind(); |
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33 bool end(); |
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34 }; |
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35 |
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36 vpwtable_reader* vpwtable::start_read() const |
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37 { |
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38 return new gdbm_vpwtable_reader(filename); |
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39 } |
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40 |
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41 gdbm_vpwtable_reader::gdbm_vpwtable_reader(const mystring& filename) |
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42 : dbf(gdbm_open((char*)filename.c_str(), 0, GDBM_READER, 0, 0)) |
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43 { |
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44 if(dbf) |
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45 key = gdbm_firstkey(dbf); |
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46 else |
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47 key.dptr = 0; |
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48 } |
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49 |
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50 gdbm_vpwtable_reader::~gdbm_vpwtable_reader() |
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51 { |
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52 end(); |
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53 } |
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54 |
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55 bool gdbm_vpwtable_reader::operator!() const |
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56 { |
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57 return !dbf; |
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58 } |
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59 |
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60 bool gdbm_vpwtable_reader::end() |
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61 { |
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62 if(dbf) |
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63 gdbm_close(dbf); |
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64 if(key.dptr) |
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65 free(key.dptr); |
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66 dbf = 0; |
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67 key.dptr = 0; |
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68 return true; |
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69 } |
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70 |
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71 bool gdbm_vpwtable_reader::rewind() |
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72 { |
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73 if(dbf) { |
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74 key = gdbm_firstkey(dbf); |
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75 return true; |
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76 } |
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77 return false; |
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78 } |
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79 |
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80 bool gdbm_vpwtable_reader::get(vpwentry& out) |
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81 { |
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82 if(key.dptr) { |
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83 mystring name(key.dptr, key.dsize); |
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84 datum rec = gdbm_fetch(dbf, key); |
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85 mystring result(rec.dptr, rec.dsize); |
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86 free(rec.dptr); |
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87 if(!out.from_record(name, result)) |
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88 return false; |
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89 key = gdbm_nextkey(dbf, key); |
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90 return true; |
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91 } |
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92 return false; |
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93 } |