[1137] | 1 | /* -*- C++ -*- |
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| 2 | * src/lemon/graph_reader.h - Part of LEMON, a generic C++ optimization library |
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| 3 | * |
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[1164] | 4 | * Copyright (C) 2005 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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[1137] | 5 | * (Egervary Combinatorial Optimization Research Group, EGRES). |
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| 6 | * |
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| 7 | * Permission to use, modify and distribute this software is granted |
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| 8 | * provided that this copyright notice appears in all copies. For |
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| 9 | * precise terms see the accompanying LICENSE file. |
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| 10 | * |
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| 11 | * This software is provided "AS IS" with no warranty of any kind, |
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| 12 | * express or implied, and with no claim as to its suitability for any |
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| 13 | * purpose. |
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| 14 | * |
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| 15 | */ |
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| 16 | |
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| 17 | ///\ingroup gio |
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| 18 | ///\file |
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| 19 | ///\brief Graph reader. |
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| 20 | |
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[1214] | 21 | #ifndef LEMON_GRAPH_READER_H |
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| 22 | #define LEMON_GRAPH_READER_H |
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| 23 | |
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[1137] | 24 | #include <iostream> |
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| 25 | #include <sstream> |
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| 26 | |
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| 27 | #include <map> |
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| 28 | #include <vector> |
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| 29 | |
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| 30 | #include <memory> |
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| 31 | |
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| 32 | #include <lemon/error.h> |
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| 33 | |
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| 34 | |
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| 35 | namespace lemon { |
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| 36 | |
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| 37 | |
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| 38 | /// \brief Standard ReaderTraits for the GraphReader class. |
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| 39 | /// |
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| 40 | /// Standard ReaderTraits for the GraphReader class. |
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| 41 | /// It defines standard reading method for all type of value. |
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| 42 | struct DefaultReaderTraits { |
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| 43 | |
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| 44 | /// \brief Template class for reading an value. |
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| 45 | /// |
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| 46 | /// Template class for reading an value. |
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| 47 | template <typename _Value> |
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| 48 | struct Reader { |
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| 49 | /// The value type. |
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| 50 | typedef _Value Value; |
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| 51 | /// \brief Reads a value from the given stream. |
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| 52 | /// |
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| 53 | /// Reads a value from the given stream. |
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| 54 | void read(std::istream& is, Value& value) { |
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| 55 | if (!(is >> value)) |
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[1208] | 56 | throw DataFormatError("Default reader format exception"); |
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[1137] | 57 | } |
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| 58 | }; |
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| 59 | |
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| 60 | /// The reader class for the not needed maps. |
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| 61 | typedef Reader<std::string> DefaultReader; |
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| 62 | |
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| 63 | }; |
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| 64 | |
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| 65 | /// \brief Reader class for quoted strings. |
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| 66 | /// |
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| 67 | /// Reader class for quoted strings. It can process the escape |
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| 68 | /// sequences in the string. |
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| 69 | class QuotedStringReader { |
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| 70 | public: |
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| 71 | typedef std::string Value; |
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| 72 | |
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| 73 | /// \brief Constructor for the reader. |
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| 74 | /// |
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| 75 | /// Constructor for the reader. If the given parameter is true |
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| 76 | /// the reader processes the escape sequences. |
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| 77 | QuotedStringReader(bool _escaped = true) : escaped(_escaped) {} |
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| 78 | |
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| 79 | /// \brief Reads a quoted string from the given stream. |
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| 80 | /// |
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| 81 | /// Reads a quoted string from the given stream. |
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| 82 | void read(std::istream& is, std::string& value) { |
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| 83 | char c; |
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| 84 | value.clear(); |
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| 85 | is >> ws; |
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| 86 | if (!is.get(c) || c != '\"') |
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[1208] | 87 | throw DataFormatError("Quoted string format error"); |
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[1137] | 88 | while (is.get(c) && c != '\"') { |
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| 89 | if (escaped && c == '\\') { |
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| 90 | value += readEscape(is); |
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| 91 | } else { |
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| 92 | value += c; |
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| 93 | } |
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| 94 | } |
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[1208] | 95 | if (!is) throw DataFormatError("Quoted string format error"); |
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[1137] | 96 | } |
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| 97 | |
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| 98 | private: |
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| 99 | |
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| 100 | static char readEscape(std::istream& is) { |
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| 101 | char c; |
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| 102 | switch (is.get(c), c) { |
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| 103 | case '\\': |
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| 104 | return '\\'; |
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| 105 | case '\"': |
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| 106 | return '\"'; |
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| 107 | case '\'': |
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| 108 | return '\''; |
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| 109 | case '\?': |
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| 110 | return '\?'; |
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| 111 | case 'a': |
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| 112 | return '\a'; |
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| 113 | case 'b': |
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| 114 | return '\b'; |
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| 115 | case 'f': |
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| 116 | return '\f'; |
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| 117 | case 'n': |
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| 118 | return '\n'; |
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| 119 | case 'r': |
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| 120 | return '\r'; |
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| 121 | case 't': |
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| 122 | return '\t'; |
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| 123 | case 'v': |
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| 124 | return '\v'; |
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| 125 | case 'x': |
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| 126 | { |
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| 127 | int code; |
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| 128 | if (!is.get(c) || !isHex(c)) |
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[1208] | 129 | throw DataFormatError("Escape format error"); |
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[1137] | 130 | else if (code = valueHex(c), !is.get(c) || !isHex(c)) is.putback(c); |
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| 131 | else code = code * 16 + valueHex(c); |
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| 132 | return code; |
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| 133 | } |
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| 134 | default: |
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| 135 | { |
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| 136 | int code; |
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| 137 | if (!isOct(c)) |
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[1208] | 138 | throw DataFormatError("Escape format error"); |
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[1137] | 139 | else if (code = valueOct(c), !is.get(c) || !isOct(c)) |
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| 140 | is.putback(c); |
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| 141 | else if (code = code * 8 + valueOct(c), !is.get(c) || !isOct(c)) |
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| 142 | is.putback(c); |
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| 143 | else code = code * 8 + valueOct(c); |
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| 144 | return code; |
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| 145 | } |
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| 146 | } |
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| 147 | } |
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| 148 | |
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| 149 | static bool isOct(char c) { |
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| 150 | return '0' <= c && c <='7'; |
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| 151 | } |
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| 152 | |
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| 153 | static int valueOct(char c) { |
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| 154 | return c - '0'; |
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| 155 | } |
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| 156 | |
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| 157 | static bool isHex(char c) { |
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| 158 | return ('0' <= c && c <= '9') || |
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| 159 | ('a' <= c && c <= 'z') || |
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| 160 | ('A' <= c && c <= 'Z'); |
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| 161 | } |
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| 162 | |
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| 163 | static int valueHex(char c) { |
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| 164 | if ('0' <= c && c <= '9') return c - '0'; |
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| 165 | if ('a' <= c && c <= 'z') return c - 'a' + 10; |
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| 166 | return c - 'A' + 10; |
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| 167 | } |
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| 168 | |
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| 169 | bool escaped; |
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| 170 | }; |
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| 171 | |
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| 172 | /// \brief The graph reader class. |
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| 173 | /// |
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| 174 | /// The reader class for the graph input. |
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[1138] | 175 | /// \see \ref GraphWriter |
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| 176 | /// \see \ref graph-io-page |
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[1137] | 177 | template <typename _Graph, typename _ReaderTraits = DefaultReaderTraits> |
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| 178 | class GraphReader { |
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| 179 | public: |
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| 180 | |
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| 181 | typedef _Graph Graph; |
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| 182 | typedef typename Graph::Node Node; |
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| 183 | typedef typename Graph::Edge Edge; |
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| 184 | |
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| 185 | typedef _ReaderTraits ReaderTraits; |
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| 186 | typedef typename ReaderTraits::DefaultReader DefaultReader; |
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| 187 | |
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| 188 | /// \brief Construct a new GraphReader. |
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| 189 | /// |
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[1208] | 190 | /// Construct a new GraphReader. It reads into the given graph |
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| 191 | /// and it use the given reader as the default skipper. |
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[1137] | 192 | GraphReader(std::istream& _is, Graph& _graph, |
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| 193 | const DefaultReader& _reader = DefaultReader()) |
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| 194 | : is(_is), graph(_graph), nodeSkipper(_reader), edgeSkipper(_reader) {} |
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| 195 | |
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| 196 | /// \brief Destruct the graph reader. |
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| 197 | /// |
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| 198 | /// Destruct the graph reader. |
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| 199 | ~GraphReader() { |
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| 200 | |
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| 201 | for (typename NodeMapReaders::iterator it = node_map_readers.begin(); |
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| 202 | it != node_map_readers.end(); ++it) { |
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| 203 | delete it->second; |
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| 204 | } |
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| 205 | |
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| 206 | for (typename EdgeMapReaders::iterator it = edge_map_readers.begin(); |
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| 207 | it != edge_map_readers.end(); ++it) { |
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| 208 | delete it->second; |
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| 209 | } |
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| 210 | |
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| 211 | } |
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| 212 | |
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| 213 | /// \brief Add a new node map reader command for the reader. |
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| 214 | /// |
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| 215 | /// Add a new node map reader command for the reader. |
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| 216 | template <typename Map> |
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| 217 | GraphReader& addNodeMap(std::string name, Map& map) { |
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| 218 | return addNodeMap<typename ReaderTraits::template |
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| 219 | Reader<typename Map::Value>, Map>(name, map); |
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| 220 | } |
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| 221 | |
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| 222 | /// \brief Add a new node map reader command for the reader. |
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| 223 | /// |
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| 224 | /// Add a new node map reader command for the reader. |
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| 225 | template <typename Reader, typename Map> |
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| 226 | GraphReader& addNodeMap(std::string name, Map& map, |
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| 227 | const Reader& reader = Reader()) { |
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| 228 | if (node_map_readers.find(name) != node_map_readers.end()) { |
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[1208] | 229 | ErrorMessage msg; |
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| 230 | msg << "Multiple read rule for node map: " << name; |
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[1214] | 231 | throw IOParameterError(msg.message()); |
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[1137] | 232 | } |
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| 233 | node_map_readers.insert( |
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| 234 | make_pair(name, new MapReader<Node, Map, Reader>(map, reader))); |
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| 235 | return *this; |
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| 236 | } |
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| 237 | |
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| 238 | /// \brief Add a new node map skipper command for the reader. |
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| 239 | /// |
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| 240 | /// Add a new node map skipper command for the reader. |
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| 241 | template <typename Reader> |
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| 242 | GraphReader& skipNodeMap(std::string name, |
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| 243 | const Reader& reader = Reader()) { |
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| 244 | if (node_map_readers.find(name) != node_map_readers.end()) { |
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[1208] | 245 | ErrorMessage msg; |
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| 246 | msg << "Multiple read rule for node map: " << name; |
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[1214] | 247 | throw IOParameterError(msg.message()); |
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[1137] | 248 | } |
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| 249 | node_map_readers.insert( |
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| 250 | make_pair(name, new SkipReader<Node, Reader>(reader))); |
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| 251 | return *this; |
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| 252 | } |
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| 253 | |
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| 254 | /// \brief Add a new edge map reader command for the reader. |
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| 255 | /// |
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| 256 | /// Add a new edge map reader command for the reader. |
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| 257 | template <typename Map> |
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| 258 | GraphReader& addEdgeMap(std::string name, Map& map) { |
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| 259 | return addEdgeMap<typename ReaderTraits::template |
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| 260 | Reader<typename Map::Value>, Map>(name, map); |
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| 261 | } |
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| 262 | |
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| 263 | |
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| 264 | /// \brief Add a new edge map reader command for the reader. |
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| 265 | /// |
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| 266 | /// Add a new edge map reader command for the reader. |
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| 267 | template <typename Reader, typename Map> |
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| 268 | GraphReader& addEdgeMap(std::string name, Map& map, |
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| 269 | const Reader& reader = Reader()) { |
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| 270 | if (edge_map_readers.find(name) != edge_map_readers.end()) { |
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[1208] | 271 | ErrorMessage msg; |
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| 272 | msg << "Multiple read rule for edge map: " << name; |
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[1214] | 273 | throw IOParameterError(msg.message()); |
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[1137] | 274 | } |
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| 275 | edge_map_readers.insert( |
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| 276 | make_pair(name, new MapReader<Edge, Map, Reader>(map, reader))); |
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| 277 | return *this; |
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| 278 | } |
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| 279 | |
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| 280 | /// \brief Add a new edge map skipper command for the reader. |
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| 281 | /// |
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| 282 | /// Add a new edge map skipper command for the reader. |
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| 283 | template <typename Reader> |
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| 284 | GraphReader& skipEdgeMap(std::string name, |
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| 285 | const Reader& reader = Reader()) { |
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| 286 | if (edge_map_readers.find(name) != edge_map_readers.end()) { |
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[1208] | 287 | ErrorMessage msg; |
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| 288 | msg << "Multiple read rule for edge map: " << name; |
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[1214] | 289 | throw IOParameterError(msg.message()); |
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[1137] | 290 | } |
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| 291 | edge_map_readers.insert( |
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| 292 | make_pair(name, new SkipReader<Edge, Reader>(reader))); |
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| 293 | return *this; |
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| 294 | } |
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| 295 | |
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| 296 | /// \brief Add a new labeled node reader for the reader. |
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| 297 | /// |
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| 298 | /// Add a new labeled node reader for the reader. |
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| 299 | GraphReader& addNode(std::string name, Node& node) { |
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| 300 | if (node_readers.find(name) != node_readers.end()) { |
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[1208] | 301 | ErrorMessage msg; |
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| 302 | msg << "Multiple read rule for node: " << name; |
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[1214] | 303 | throw IOParameterError(msg.message()); |
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[1137] | 304 | } |
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| 305 | node_readers.insert(make_pair(name, &node)); |
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| 306 | return *this; |
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| 307 | } |
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| 308 | |
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| 309 | /// \brief Add a new labeled edge reader for the reader. |
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| 310 | /// |
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| 311 | /// Add a new labeled edge reader for the reader. |
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| 312 | GraphReader& addEdge(std::string name, Edge& edge) { |
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| 313 | if (edge_readers.find(name) != edge_readers.end()) { |
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[1208] | 314 | ErrorMessage msg; |
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| 315 | msg << "Multiple read rule for edge: " << name; |
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[1214] | 316 | throw IOParameterError(msg.message()); |
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[1137] | 317 | } |
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| 318 | edge_readers.insert(make_pair(name, &edge)); |
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| 319 | return *this; |
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| 320 | } |
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| 321 | |
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| 322 | /// \brief Executes the reader commands. |
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| 323 | /// |
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| 324 | /// Executes the reader commands. |
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| 325 | void run() { |
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| 326 | int line_num = 0; |
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| 327 | std::auto_ptr<InverterBase<Node> > nodeInverter; |
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| 328 | std::auto_ptr<InverterBase<Edge> > edgeInverter; |
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| 329 | try { |
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| 330 | std::string line = readNotEmptyLine(is, line_num); |
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| 331 | if (line.find("@nodeset") == 0) { |
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| 332 | line = readNodeSet(line_num, nodeInverter); |
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| 333 | } |
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| 334 | if (line.find("@edgeset") == 0) { |
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| 335 | line = readEdgeSet(line_num, edgeInverter, nodeInverter); |
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| 336 | } |
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| 337 | if (line.find("@nodes") == 0) { |
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| 338 | line = readNodes(line_num, nodeInverter); |
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| 339 | } |
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| 340 | if (line.find("@edges") == 0) { |
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| 341 | line = readEdges(line_num, edgeInverter); |
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| 342 | } |
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| 343 | if (line.find("@end") != 0) { |
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[1208] | 344 | throw DataFormatError("Invalid control sequence error"); |
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[1137] | 345 | } |
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[1208] | 346 | } catch (DataFormatError e) { |
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| 347 | e.line(line_num); |
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| 348 | throw e; |
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[1137] | 349 | } |
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| 350 | } |
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| 351 | |
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| 352 | private: |
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| 353 | |
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| 354 | template <typename Item> class InverterBase; |
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| 355 | |
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| 356 | std::string readNodeSet(int& line_num, |
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| 357 | auto_ptr<InverterBase<Node> > & nodeInverter) { |
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| 358 | std::vector<ReaderBase<Node>* > index; |
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| 359 | { |
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| 360 | std::string line = readNotEmptyLine(is, line_num); |
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| 361 | std::string id; |
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| 362 | std::istringstream ls(line); |
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| 363 | while (ls >> id) { |
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| 364 | if (id[0] == '#') break; |
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| 365 | typename NodeMapReaders::iterator it = node_map_readers.find(id); |
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| 366 | if (it != node_map_readers.end()) { |
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| 367 | index.push_back(it->second); |
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| 368 | node_map_readers.erase(it); |
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| 369 | } else { |
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| 370 | index.push_back(&nodeSkipper); |
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| 371 | } |
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| 372 | } |
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| 373 | } |
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| 374 | |
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| 375 | if (index.size() == 0) { |
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[1208] | 376 | throw DataFormatError("Cannot find node id map"); |
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[1137] | 377 | } |
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| 378 | |
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| 379 | nodeInverter = auto_ptr<InverterBase<Node> >(index[0]->getInverter()); |
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| 380 | std::string line; |
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| 381 | while (line = readNotEmptyLine(is, line_num), line[0] != '@') { |
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| 382 | Node node = graph.addNode(); |
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| 383 | std::istringstream ls(line); |
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| 384 | nodeInverter->read(ls, node); |
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| 385 | for (int i = 1; i < (int)index.size(); ++i) { |
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| 386 | index[i]->read(ls, node); |
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| 387 | } |
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| 388 | } |
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| 389 | return line; |
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| 390 | } |
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| 391 | |
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| 392 | std::string readEdgeSet(int& line_num, |
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| 393 | auto_ptr<InverterBase<Edge> > & edgeInverter, |
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| 394 | auto_ptr<InverterBase<Node> > & nodeInverter) { |
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| 395 | std::vector<ReaderBase<Edge>*> index; |
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| 396 | { |
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| 397 | std::string line = readNotEmptyLine(is, line_num); |
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| 398 | std::string id; |
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| 399 | std::istringstream ls(line); |
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| 400 | while (ls >> id) { |
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| 401 | if (id[0] == '#') break; |
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| 402 | typename EdgeMapReaders::iterator it = edge_map_readers.find(id); |
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| 403 | if (it != edge_map_readers.end()) { |
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| 404 | index.push_back(it->second); |
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| 405 | edge_map_readers.erase(it); |
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| 406 | } else { |
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| 407 | index.push_back(&edgeSkipper); |
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| 408 | } |
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| 409 | } |
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| 410 | } |
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| 411 | |
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| 412 | if (index.size() == 0) { |
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[1208] | 413 | throw DataFormatError("Cannot find edge id map"); |
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[1137] | 414 | } |
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| 415 | |
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| 416 | edgeInverter = auto_ptr<InverterBase<Edge> >(index[0]->getInverter()); |
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| 417 | std::string line; |
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| 418 | while (line = readNotEmptyLine(is, line_num), line[0] != '@') { |
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| 419 | std::istringstream ls(line); |
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| 420 | Node source = nodeInverter->read(ls); |
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| 421 | Node target = nodeInverter->read(ls); |
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| 422 | Edge edge = graph.addEdge(source, target); |
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| 423 | edgeInverter->read(ls, edge); |
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| 424 | for (int i = 1; i < (int)index.size(); ++i) { |
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| 425 | index[i]->read(ls, edge); |
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| 426 | } |
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| 427 | } |
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| 428 | return line; |
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| 429 | } |
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| 430 | |
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| 431 | std::string readNodes(int& line_num, |
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| 432 | auto_ptr<InverterBase<Node> >& nodeInverter) { |
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| 433 | std::string line; |
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| 434 | while (line = readNotEmptyLine(is, line_num), line[0] != '@') { |
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| 435 | std::istringstream ls(line); |
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| 436 | std::string name; |
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| 437 | ls >> name; |
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| 438 | typename NodeReaders::iterator it = node_readers.find(name); |
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| 439 | if (it != node_readers.end()) { |
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| 440 | *(it -> second) = nodeInverter->read(ls); |
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| 441 | } |
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| 442 | } |
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| 443 | return line; |
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| 444 | } |
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| 445 | |
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| 446 | std::string readEdges(int& line_num, |
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| 447 | auto_ptr<InverterBase<Edge> >& edgeInverter) { |
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| 448 | std::string line; |
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| 449 | while (line = readNotEmptyLine(is, line_num), line[0] != '@') { |
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| 450 | std::istringstream ls(line); |
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| 451 | std::string name; |
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| 452 | ls >> name; |
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| 453 | typename EdgeReaders::iterator it = edge_readers.find(name); |
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| 454 | if (it != edge_readers.end()) { |
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| 455 | *(it -> second) = edgeInverter->read(ls); |
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| 456 | } |
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| 457 | } |
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| 458 | return line; |
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| 459 | } |
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| 460 | |
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| 461 | std::string readNotEmptyLine(std::istream& is, int& line_num) { |
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| 462 | std::string line; |
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| 463 | while (++line_num, getline(is, line)) { |
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| 464 | int vi = line.find_first_not_of(" \t"); |
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| 465 | if (vi != (int)string::npos && line[vi] != '#') { |
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| 466 | return line.substr(vi); |
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| 467 | } |
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| 468 | } |
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[1208] | 469 | throw DataFormatError("End of stream error"); |
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[1137] | 470 | } |
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| 471 | |
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| 472 | // Inverters store and give back the Item from the id, |
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| 473 | // and may put the ids into a map. |
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| 474 | |
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| 475 | template <typename _Item> |
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| 476 | class InverterBase { |
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| 477 | public: |
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| 478 | typedef _Item Item; |
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| 479 | virtual void read(std::istream&, const Item&) = 0; |
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| 480 | virtual Item read(std::istream&) = 0; |
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| 481 | }; |
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| 482 | |
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| 483 | template <typename _Item, typename _Map, typename _Reader> |
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| 484 | class MapReaderInverter : public InverterBase<_Item> { |
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| 485 | public: |
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| 486 | typedef _Item Item; |
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| 487 | typedef _Reader Reader; |
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| 488 | typedef typename Reader::Value Value; |
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| 489 | typedef _Map Map; |
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| 490 | typedef std::map<Value, Item> Inverse; |
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| 491 | |
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| 492 | Map& map; |
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| 493 | Reader reader; |
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| 494 | Inverse inverse; |
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| 495 | |
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| 496 | MapReaderInverter(Map& _map, const Reader& _reader) |
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| 497 | : map(_map), reader(_reader) {} |
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| 498 | |
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| 499 | virtual ~MapReaderInverter() {} |
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| 500 | |
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| 501 | virtual void read(std::istream& is, const Item& item) { |
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| 502 | Value value; |
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| 503 | reader.read(is, value); |
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| 504 | map.set(item, value); |
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| 505 | typename Inverse::iterator it = inverse.find(value); |
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| 506 | if (it == inverse.end()) { |
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| 507 | inverse.insert(make_pair(value, item)); |
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| 508 | } else { |
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[1208] | 509 | throw DataFormatError("Multiple ID occurence"); |
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[1137] | 510 | } |
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| 511 | } |
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| 512 | |
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| 513 | virtual Item read(std::istream& is) { |
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| 514 | Value value; |
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| 515 | reader.read(is, value); |
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| 516 | typename Inverse::const_iterator it = inverse.find(value); |
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| 517 | if (it != inverse.end()) { |
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| 518 | return it->second; |
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| 519 | } else { |
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[1208] | 520 | throw DataFormatError("Invalid ID error"); |
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[1137] | 521 | } |
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| 522 | } |
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| 523 | }; |
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| 524 | |
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| 525 | template <typename _Item, typename _Reader> |
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| 526 | class SkipReaderInverter : public InverterBase<_Item> { |
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| 527 | public: |
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| 528 | typedef _Item Item; |
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| 529 | typedef _Reader Reader; |
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| 530 | typedef typename Reader::Value Value; |
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| 531 | typedef std::map<Value, Item> Inverse; |
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| 532 | |
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| 533 | Reader reader; |
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| 534 | |
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| 535 | SkipReaderInverter(const Reader& _reader) |
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| 536 | : reader(_reader) {} |
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| 537 | |
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| 538 | virtual ~SkipReaderInverter() {} |
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| 539 | |
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| 540 | virtual void read(std::istream& is, const Item& item) { |
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| 541 | Value value; |
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| 542 | reader.read(is, value); |
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| 543 | typename Inverse::iterator it = inverse.find(value); |
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| 544 | if (it == inverse.end()) { |
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| 545 | inverse.insert(make_pair(value, item)); |
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| 546 | } else { |
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[1208] | 547 | throw DataFormatError("Multiple ID occurence error"); |
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[1137] | 548 | } |
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| 549 | } |
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| 550 | |
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| 551 | virtual Item read(std::istream& is) { |
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| 552 | Value value; |
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| 553 | reader.read(is, value); |
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| 554 | typename Inverse::const_iterator it = inverse.find(value); |
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| 555 | if (it != inverse.end()) { |
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| 556 | return it->second; |
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| 557 | } else { |
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[1208] | 558 | throw DataFormatError("Invalid ID error"); |
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[1137] | 559 | } |
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| 560 | } |
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| 561 | private: |
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| 562 | Inverse inverse; |
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| 563 | }; |
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| 564 | |
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| 565 | // Readers |
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| 566 | |
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| 567 | template <typename _Item> |
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| 568 | class ReaderBase { |
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| 569 | public: |
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| 570 | typedef _Item Item; |
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| 571 | |
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| 572 | // virtual ~ReaderBase() {} |
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| 573 | |
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| 574 | virtual void read(std::istream& is, const Item& item) = 0; |
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| 575 | virtual InverterBase<_Item>* getInverter() = 0; |
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| 576 | }; |
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| 577 | |
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| 578 | template <typename _Item, typename _Map, typename _Reader> |
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| 579 | class MapReader : public ReaderBase<_Item> { |
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| 580 | public: |
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| 581 | typedef _Map Map; |
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| 582 | typedef _Reader Reader; |
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| 583 | typedef typename Reader::Value Value; |
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| 584 | typedef _Item Item; |
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| 585 | |
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| 586 | Map& map; |
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| 587 | Reader reader; |
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| 588 | |
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| 589 | MapReader(Map& _map, const Reader& _reader) |
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| 590 | : map(_map), reader(_reader) {} |
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| 591 | |
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| 592 | virtual ~MapReader() {} |
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| 593 | |
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| 594 | virtual void read(std::istream& is, const Item& item) { |
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| 595 | Value value; |
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| 596 | reader.read(is, value); |
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| 597 | map.set(item, value); |
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| 598 | } |
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| 599 | |
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| 600 | virtual InverterBase<_Item>* getInverter() { |
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| 601 | return new MapReaderInverter<Item, Map, Reader>(map, reader); |
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| 602 | } |
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| 603 | }; |
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| 604 | |
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| 605 | |
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| 606 | template <typename _Item, typename _Reader> |
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| 607 | class SkipReader : public ReaderBase<_Item> { |
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| 608 | public: |
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| 609 | typedef _Reader Reader; |
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| 610 | typedef typename Reader::Value Value; |
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| 611 | typedef _Item Item; |
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| 612 | |
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| 613 | Reader reader; |
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| 614 | SkipReader(const Reader& _reader) : reader(_reader) {} |
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| 615 | |
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| 616 | virtual ~SkipReader() {} |
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| 617 | |
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[1250] | 618 | virtual void read(std::istream& is, const Item&) { |
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[1137] | 619 | Value value; |
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| 620 | reader.read(is, value); |
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| 621 | } |
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| 622 | |
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| 623 | virtual InverterBase<Item>* getInverter() { |
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| 624 | return new SkipReaderInverter<Item, Reader>(reader); |
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| 625 | } |
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| 626 | }; |
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| 627 | |
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| 628 | |
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| 629 | typedef std::map<std::string, ReaderBase<Node>*> NodeMapReaders; |
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| 630 | NodeMapReaders node_map_readers; |
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| 631 | |
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| 632 | typedef std::map<std::string, ReaderBase<Edge>*> EdgeMapReaders; |
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| 633 | EdgeMapReaders edge_map_readers; |
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| 634 | |
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| 635 | typedef std::map<std::string, Node*> NodeReaders; |
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| 636 | NodeReaders node_readers; |
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| 637 | |
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| 638 | typedef std::map<std::string, Edge*> EdgeReaders; |
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| 639 | EdgeReaders edge_readers; |
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| 640 | |
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| 641 | std::istream& is; |
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| 642 | Graph& graph; |
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| 643 | |
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| 644 | SkipReader<Node, DefaultReader> nodeSkipper; |
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| 645 | SkipReader<Edge, DefaultReader> edgeSkipper; |
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| 646 | |
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| 647 | }; |
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| 648 | |
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[1208] | 649 | /// Ready to use reader function. |
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| 650 | template<typename Graph, typename CapacityMap, typename CostMap> |
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| 651 | void readGraph(std::istream& is, Graph &g, CapacityMap& capacity, |
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| 652 | typename Graph::Node &s, typename Graph::Node &t, |
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| 653 | CostMap& cost) { |
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| 654 | GraphReader<Graph> reader(is, g); |
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| 655 | reader.addEdgeMap("capacity", capacity); |
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| 656 | reader.addEdgeMap("cost", cost); |
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| 657 | reader.addNode("source", s); |
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| 658 | reader.addNode("target", t); |
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| 659 | reader.run(); |
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| 660 | } |
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| 661 | |
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| 662 | template<typename Graph, typename CapacityMap> |
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| 663 | void readGraph(std::istream& is, Graph &g, CapacityMap& capacity, |
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| 664 | typename Graph::Node &s, typename Graph::Node &t) { |
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| 665 | GraphReader<Graph> reader(is, g); |
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| 666 | reader.addEdgeMap("capacity", capacity); |
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| 667 | reader.addNode("source", s); |
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| 668 | reader.addNode("target", t); |
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| 669 | reader.run(); |
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| 670 | } |
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| 671 | |
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| 672 | template<typename Graph, typename CapacityMap> |
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| 673 | void readGraph(std::istream& is, Graph &g, CapacityMap& capacity, |
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| 674 | typename Graph::Node &s) { |
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| 675 | GraphReader<Graph> reader(is, g); |
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| 676 | reader.addEdgeMap("capacity", capacity); |
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| 677 | reader.addNode("source", s); |
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| 678 | reader.run(); |
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| 679 | } |
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| 680 | |
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| 681 | template<typename Graph, typename CapacityMap> |
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| 682 | void readGraph(std::istream& is, Graph &g, CapacityMap& capacity) { |
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| 683 | GraphReader<Graph> reader(is, g); |
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| 684 | reader.addEdgeMap("capacity", capacity); |
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| 685 | reader.run(); |
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| 686 | } |
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| 687 | |
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| 688 | template<typename Graph> |
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| 689 | void readGraph(std::istream& is, Graph &g) { |
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| 690 | GraphReader<Graph> reader(is, g); |
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| 691 | reader.run(); |
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| 692 | } |
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| 693 | |
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[1137] | 694 | } |
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[1214] | 695 | |
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| 696 | #endif |
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