1 | /* ---------------------------------------------------------------------------- |
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2 | libconfig - A library for processing structured configuration files |
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3 | Copyright (C) 2005-2009 Mark A Lindner |
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4 | |
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5 | This file is part of libconfig. |
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6 | |
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7 | This library is free software; you can redistribute it and/or |
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8 | modify it under the terms of the GNU Lesser General Public License |
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9 | as published by the Free Software Foundation; either version 2.1 of |
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10 | the License, or (at your option) any later version. |
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11 | |
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12 | This library is distributed in the hope that it will be useful, but |
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13 | WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 | Lesser General Public License for more details. |
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16 | |
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17 | You should have received a copy of the GNU Library General Public |
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18 | License along with this library; if not, see |
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19 | <http://www.gnu.org/licenses/>. |
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20 | ---------------------------------------------------------------------------- |
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21 | */ |
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22 | |
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23 | #include <iostream> |
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24 | #include <iomanip> |
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25 | #include <cstdlib> |
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26 | #include <libconfig.h++> |
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27 | |
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28 | using namespace std; |
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29 | using namespace libconfig; |
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30 | |
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31 | // This example reads the configuration file 'example.cfg', adds a new |
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32 | // movie record to the movies list, and writes the updated configuration to |
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33 | // 'updated.cfg'. |
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34 | |
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35 | int main(int argc, char **argv) |
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36 | { |
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37 | static const char *output_file = "updated.cfg"; |
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38 | |
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39 | Config cfg; |
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40 | |
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41 | // Read the file. If there is an error, report it and exit. |
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42 | try |
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43 | { |
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44 | cfg.readFile("example.cfg"); |
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45 | } |
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46 | catch(const FileIOException &fioex) |
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47 | { |
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48 | std::cerr << "I/O error while reading file." << std::endl; |
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49 | return(EXIT_FAILURE); |
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50 | } |
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51 | catch(const ParseException &pex) |
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52 | { |
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53 | std::cerr << "Parse error at " << pex.getFile() << ":" << pex.getLine() |
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54 | << " - " << pex.getError() << std::endl; |
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55 | return(EXIT_FAILURE); |
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56 | } |
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57 | |
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58 | // Find the 'movies' setting. Add intermediate settings if they don't yet |
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59 | // exist. |
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60 | Setting &root = cfg.getRoot(); |
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61 | |
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62 | if(! root.exists("inventory")) |
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63 | root.add("inventory", Setting::TypeGroup); |
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64 | |
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65 | Setting &inventory = root["inventory"]; |
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66 | |
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67 | if(! inventory.exists("movies")) |
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68 | inventory.add("movies", Setting::TypeList); |
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69 | |
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70 | Setting &movies = inventory["movies"]; |
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71 | |
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72 | // Create the new movie entry. |
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73 | Setting &movie = movies.add(Setting::TypeGroup); |
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74 | |
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75 | movie.add("title", Setting::TypeString) = "Buckaroo Banzai"; |
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76 | movie.add("media", Setting::TypeString) = "DVD"; |
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77 | movie.add("price", Setting::TypeFloat) = 12.99; |
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78 | movie.add("qty", Setting::TypeInt) = 20; |
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79 | |
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80 | // Write out the updated configuration. |
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81 | try |
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82 | { |
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83 | cfg.writeFile(output_file); |
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84 | cerr << "Updated configuration successfully written to: " << output_file |
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85 | << endl; |
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86 | |
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87 | } |
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88 | catch(const FileIOException &fioex) |
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89 | { |
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90 | cerr << "I/O error while writing file: " << output_file << endl; |
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91 | return(EXIT_FAILURE); |
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92 | } |
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93 | |
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94 | return(EXIT_SUCCESS); |
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95 | } |
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96 | |
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97 | // eof |
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