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1 /** |
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2 * Relational pipes |
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3 * Copyright © 2020 František Kučera (Frantovo.cz, GlobalCode.info) |
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4 * |
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5 * This program is free software: you can redistribute it and/or modify |
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6 * it under the terms of the GNU General Public License as published by |
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7 * the Free Software Foundation, version 3 of the License. |
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8 * |
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9 * This program is distributed in the hope that it will be useful, |
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 * GNU General Public License for more details. |
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13 * |
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14 * You should have received a copy of the GNU General Public License |
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15 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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16 */ |
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17 #pragma once |
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18 |
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19 #include <memory> |
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20 #include <string> |
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21 #include <vector> |
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22 #include <iostream> |
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23 #include <sstream> |
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24 #include <locale> |
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25 #include <codecvt> |
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26 |
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27 #include <relpipe/common/type/typedefs.h> |
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28 #include <relpipe/reader/TypeId.h> |
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29 #include <relpipe/reader/handlers/RelationalReaderStringHandler.h> |
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30 #include <relpipe/reader/handlers/AttributeMetadata.h> |
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31 |
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32 #include "Configuration.h" |
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33 #include "INIWriter.h" |
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34 |
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35 namespace relpipe { |
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36 namespace out { |
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37 namespace ini { |
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38 |
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39 class INILiteralHandler : public relpipe::reader::handlers::RelationalReaderStringHandler { |
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40 private: |
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41 INIWriter& writer; |
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42 relpipe::common::type::StringX sectionAttributeName; |
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43 relpipe::common::type::StringX currentSection; |
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44 std::vector<relpipe::reader::handlers::AttributeMetadata> currentAttributes; |
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45 relpipe::common::type::Integer relationCount = 0; |
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46 relpipe::common::type::Integer currentAttributeIndex = 0; |
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47 public: |
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48 |
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49 INILiteralHandler(INIWriter& writer, relpipe::common::type::StringX sectionAttributeName = L"") : writer(writer), sectionAttributeName(sectionAttributeName) { |
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50 } |
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51 |
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52 virtual ~INILiteralHandler() { |
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53 } |
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54 |
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55 void startRelation(relpipe::common::type::StringX name, std::vector<relpipe::reader::handlers::AttributeMetadata> attributes) override { |
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56 if (relationCount) writer.endSection(); |
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57 currentSection = name; |
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58 currentAttributes = attributes; |
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59 INIWriter::SectionStartEvent e; |
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60 e.name = name; |
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61 writer.startSection(e); |
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62 relationCount++; |
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63 } |
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64 |
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65 void attribute(const relpipe::common::type::StringX& value) override { |
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66 if (currentAttributeIndex && currentAttributeIndex % currentAttributes.size() == 0) { |
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67 currentAttributeIndex = 0; |
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68 writer.endSection(); |
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69 // Usually there should be only one record in each relation. |
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70 // But if there are more of them, we will rather create multiple sections with same name (makes more sense) |
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71 // than duplicate keys in a single section. |
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72 INIWriter::SectionStartEvent e; |
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73 e.name = currentSection; |
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74 writer.startSection(e); |
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75 } |
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76 |
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77 INIWriter::EntryEvent e; |
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78 e.key = currentAttributes[currentAttributeIndex].getAttributeName(); |
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79 e.value = value; |
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80 writer.entry(e); |
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81 |
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82 currentAttributeIndex++; |
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83 } |
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84 |
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85 void endOfPipe() { |
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86 writer.endSection(); |
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87 } |
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88 |
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89 }; |
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90 |
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91 } |
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92 } |
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93 } |