[83] | 1 | /* -*- C++ -*- |
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| 2 | * |
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[174] | 3 | * This file is a part of LEMON, a generic C++ optimization library |
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| 4 | * |
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| 5 | * Copyright (C) 2003-2006 |
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| 6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
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[83] | 7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
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| 8 | * |
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| 9 | * Permission to use, modify and distribute this software is granted |
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| 10 | * provided that this copyright notice appears in all copies. For |
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| 11 | * precise terms see the accompanying LICENSE file. |
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| 12 | * |
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| 13 | * This software is provided "AS IS" with no warranty of any kind, |
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| 14 | * express or implied, and with no claim as to its suitability for any |
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| 15 | * purpose. |
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| 16 | * |
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| 17 | */ |
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[2] | 18 | |
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| 19 | #include <iostream> |
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| 20 | #include <string> |
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| 21 | #include <vector> |
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| 22 | #include <list> |
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| 23 | #include <map> |
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[39] | 24 | #include <lemon/error.h> |
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[150] | 25 | #include <lemon/dim2.h> |
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[2] | 26 | |
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[39] | 27 | namespace lemon { |
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[2] | 28 | |
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[83] | 29 | class XmlIo |
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[39] | 30 | { |
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[83] | 31 | bool _writeMode; |
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| 32 | public: |
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| 33 | ///Check if XmlIo is in write mode. |
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| 34 | bool write() { return _writeMode;} |
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| 35 | ///Check if XmlIo is in read mode. |
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| 36 | bool read() { return !_writeMode;} |
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| 37 | |
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[39] | 38 | std::ostream& os; |
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| 39 | int level; |
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[83] | 40 | |
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[39] | 41 | protected: |
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| 42 | void indent(int level) { |
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| 43 | os << std::endl; |
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| 44 | for(int i=0;i<level;i++) os << ' '; |
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| 45 | } |
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| 46 | void tag(const std::string &_tag) { |
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| 47 | os << '<' << _tag << '>'; |
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| 48 | } |
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| 49 | void etag(const std::string &_tag) { |
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| 50 | os << "</" << _tag << '>'; |
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| 51 | } |
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| 52 | void itag(const std::string &_tag) { indent();tag(_tag); } |
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| 53 | void ietag(const std::string &_tag) { indent();etag(_tag); } |
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[2] | 54 | |
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[39] | 55 | void beginTag(const std::string &_tag) { |
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| 56 | itag(_tag); |
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| 57 | level++; |
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| 58 | } |
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| 59 | void endTag(const std::string &_tag) { |
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| 60 | level--; |
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| 61 | ietag(_tag); |
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| 62 | } |
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[2] | 63 | |
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[39] | 64 | public: |
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[83] | 65 | ///Indent the line according to its level. |
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[39] | 66 | |
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[83] | 67 | ///\warning It can only be used in write mode. |
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| 68 | /// |
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| 69 | void indent() |
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[39] | 70 | { |
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[83] | 71 | if(write()) |
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| 72 | if(level>=0) indent(level); |
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| 73 | else level=0; |
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| 74 | else throw LogicError(); |
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[39] | 75 | } |
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[2] | 76 | |
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[83] | 77 | ///Read/write a tag |
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[2] | 78 | |
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[83] | 79 | ///Read/write a tag. |
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| 80 | ///In write mode it does not start a new line. |
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[39] | 81 | class ContTag |
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| 82 | { |
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[83] | 83 | XmlIo &ix; |
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[39] | 84 | const std::string _tag; |
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| 85 | public: |
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| 86 | ///\e |
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[2] | 87 | |
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[39] | 88 | ///\e |
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| 89 | /// |
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[83] | 90 | ContTag(XmlIo &_ix,const std::string &_t) : |
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[39] | 91 | ix(_ix), _tag(_t) |
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| 92 | { |
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[83] | 93 | if(ix.write()) ix.tag(_tag); |
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| 94 | else ix.useTag(_tag); |
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[39] | 95 | } |
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[83] | 96 | ~ContTag() { |
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| 97 | if(ix.write()) ix.etag(_tag); |
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| 98 | else if(!std::uncaught_exception()) ix.useTag('/'+_tag); |
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| 99 | } |
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[39] | 100 | }; |
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| 101 | |
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[83] | 102 | ///Read/write a tag |
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| 103 | |
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| 104 | ///Read/write a tag. |
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[124] | 105 | ///The whole \<foo\> ... \</foo\> will be placed in a single line. |
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[39] | 106 | class LineTag |
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[2] | 107 | { |
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[83] | 108 | XmlIo &ix; |
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[39] | 109 | const std::string _tag; |
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| 110 | public: |
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| 111 | ///\e |
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| 112 | |
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| 113 | ///\e |
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| 114 | /// |
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[83] | 115 | LineTag(XmlIo &_ix,const std::string &_t) : |
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[39] | 116 | ix(_ix), _tag(_t) |
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| 117 | { |
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[83] | 118 | if(ix.write()) ix.itag(_tag); |
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| 119 | else ix.useTag(_tag); |
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[39] | 120 | } |
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[83] | 121 | ~LineTag() { |
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| 122 | if(ix.write()) ix.etag(_tag); |
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| 123 | else if(!std::uncaught_exception()) ix.useTag('/'+_tag); |
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| 124 | } |
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[39] | 125 | }; |
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| 126 | |
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[83] | 127 | ///Read/write a tag |
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[39] | 128 | |
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[83] | 129 | ///Read/write a tag. |
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[39] | 130 | /// |
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| 131 | class Tag |
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| 132 | { |
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[83] | 133 | XmlIo &ix; |
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[39] | 134 | const std::string _tag; |
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| 135 | public: |
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| 136 | ///\e |
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| 137 | |
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| 138 | ///\e |
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| 139 | /// |
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[83] | 140 | Tag(XmlIo &_ix,const std::string &_t) : |
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[39] | 141 | ix(_ix), _tag(_t) |
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| 142 | { |
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[83] | 143 | if(ix.write()) ix.beginTag(_tag); |
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| 144 | else ix.useTag(_tag); |
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[39] | 145 | } |
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[83] | 146 | ~Tag() { |
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| 147 | if(ix.write()) ix.endTag(_tag); |
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| 148 | else if(!std::uncaught_exception()) ix.useTag('/'+_tag); |
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[39] | 149 | } |
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| 150 | }; |
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[83] | 151 | |
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| 152 | private: |
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| 153 | std::istream& is; |
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| 154 | std::string next_tag; |
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| 155 | int line_number; |
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| 156 | |
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| 157 | void skipWhiteSpaces() |
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| 158 | { |
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| 159 | if(write()) throw LogicError(); |
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| 160 | { |
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| 161 | char c; |
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| 162 | while (is.get(c) && std::isspace(c,is.getloc())) |
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| 163 | if(c=='\n') line_number++; |
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| 164 | is.unget(); |
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| 165 | } |
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| 166 | } |
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| 167 | protected: |
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| 168 | /// Use the next tag. |
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| 169 | |
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| 170 | ///\e |
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| 171 | /// |
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| 172 | void useTag() {next_tag.clear();} |
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| 173 | |
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| 174 | ///Use the next tag and check if it is equal with \c _tag |
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| 175 | |
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| 176 | ///\e |
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| 177 | /// |
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| 178 | void useTag(const std::string &_tag) { |
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| 179 | if(nextTag()==_tag) useTag(); |
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| 180 | else throw DataFormatError("",line_number,"Unexpected token name"); |
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| 181 | } |
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| 182 | public: |
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| 183 | ///Return the next tag (if a tag follows on the stream). |
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| 184 | |
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| 185 | ///\warning It can only be used in read mode. |
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| 186 | /// |
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| 187 | const std::string &nextTag() |
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| 188 | { |
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| 189 | if(write()) throw LogicError(); |
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| 190 | else if(next_tag.empty()) { |
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| 191 | char c; |
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| 192 | skipWhiteSpaces(); |
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| 193 | if(!is.get(c) || c!='<') |
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| 194 | throw DataFormatError("",line_number,"Bad format"); |
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| 195 | next_tag.clear(); |
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| 196 | while (is.get(c) && c!='>') next_tag.push_back(c); |
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| 197 | if(c!='>') |
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| 198 | throw DataFormatError("",line_number,"Bad format"); |
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| 199 | } |
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| 200 | return next_tag; |
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| 201 | } |
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| 202 | |
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| 203 | /**********************************************************************/ |
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| 204 | |
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| 205 | |
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[39] | 206 | ///\e |
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| 207 | |
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| 208 | ///\e |
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| 209 | /// |
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[83] | 210 | XmlIo(std::ostream& _os) : _writeMode(true), os(_os), |
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| 211 | level(-1), |
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[127] | 212 | is(std::cin) {} |
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[83] | 213 | ///\e |
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| 214 | /// |
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| 215 | XmlIo(std::istream& _is) : _writeMode(false), |
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[127] | 216 | os(std::cout), is(_is), |
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[83] | 217 | line_number(1) {} |
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| 218 | |
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| 219 | ~XmlIo() { if(write()) os<< std::endl; } |
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[39] | 220 | |
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[83] | 221 | |
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| 222 | |
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| 223 | XmlIo &operator()(const int &v) |
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[39] | 224 | { |
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[83] | 225 | if(write()) os << v; |
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| 226 | else { |
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| 227 | skipWhiteSpaces(); |
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| 228 | if(!(is >> const_cast<int &>(v))) |
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| 229 | throw DataFormatError("",line_number,"Not an 'int'"); |
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| 230 | } |
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[39] | 231 | return *this; |
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[2] | 232 | } |
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[83] | 233 | XmlIo &operator()(const double &v) |
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| 234 | { |
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| 235 | if(write()) os << v; |
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| 236 | else { |
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| 237 | skipWhiteSpaces(); |
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| 238 | if(!(is >> const_cast<double &>(v))) |
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| 239 | throw DataFormatError("",line_number,"Not an 'double'"); |
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| 240 | } |
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| 241 | return *this; |
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| 242 | } |
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| 243 | XmlIo &operator()(const std::string &v) |
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| 244 | { |
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| 245 | if(write()) |
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| 246 | for(std::string::const_iterator i=v.begin();i!=v.end();++i) |
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| 247 | switch(*i) { |
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| 248 | case '\\': |
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| 249 | os << "\\\\"; |
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| 250 | break; |
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| 251 | case '<': |
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| 252 | os << "\\<"; |
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| 253 | break; |
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| 254 | case '&': |
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| 255 | os << "\\&"; |
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| 256 | break; |
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| 257 | case '\n': |
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| 258 | os << "\\n"; |
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| 259 | break; |
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| 260 | default: |
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| 261 | os<<*i; |
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| 262 | break; |
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| 263 | } |
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| 264 | else { |
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| 265 | std::string &w = const_cast<std::string &>(v); |
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| 266 | w.clear(); |
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| 267 | char c; |
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| 268 | while (is.get(c) && c!='<') |
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| 269 | if(c=='\\') |
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| 270 | if(!is.get(c)) |
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| 271 | throw DataFormatError("",line_number,"Bad string"); |
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| 272 | else switch(c) { |
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| 273 | case 'n': |
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| 274 | w.push_back('\n'); |
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| 275 | break; |
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| 276 | default: |
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| 277 | w.push_back(c); |
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| 278 | break; |
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| 279 | } |
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| 280 | else { |
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| 281 | if(c=='\n') line_number++; |
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| 282 | w.push_back(c); |
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| 283 | } |
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| 284 | if(c!='<') |
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| 285 | throw DataFormatError("",line_number,"Unexpected eof"); |
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| 286 | is.unget(); |
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| 287 | } |
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| 288 | return *this; |
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| 289 | } |
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| 290 | |
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| 291 | |
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| 292 | XmlIo &operator()(const std::string &_tag,const int &v) |
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[39] | 293 | { |
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| 294 | LineTag t(*this,_tag); |
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| 295 | (*this)(v); |
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| 296 | return *this; |
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| 297 | } |
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[83] | 298 | XmlIo &operator()(const std::string &_tag,const double &v) |
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[39] | 299 | { |
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| 300 | LineTag t(*this,_tag); |
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| 301 | (*this)(v); |
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| 302 | return *this; |
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| 303 | } |
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[83] | 304 | XmlIo &operator()(const std::string &_tag,const std::string &v) |
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[39] | 305 | { |
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| 306 | LineTag t(*this,_tag); |
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| 307 | (*this)(v); |
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| 308 | return *this; |
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| 309 | } |
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| 310 | ///\e |
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| 311 | |
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| 312 | ///\e |
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| 313 | /// |
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| 314 | template<class V> |
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[83] | 315 | XmlIo &operator()(const std::string &_tag,const V &v) |
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[39] | 316 | { |
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| 317 | Tag t(*this,_tag); |
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[83] | 318 | xml(*this,const_cast<V &>(v)); |
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[39] | 319 | return *this; |
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| 320 | } |
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| 321 | ///\e |
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| 322 | |
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| 323 | ///\e |
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| 324 | /// |
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| 325 | template<class V> |
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[83] | 326 | XmlIo &operator()(const V &v) |
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[39] | 327 | { |
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[83] | 328 | xml(*this,const_cast<V &>(v)); |
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[39] | 329 | return *this; |
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| 330 | } |
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[83] | 331 | }; |
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[2] | 332 | |
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[39] | 333 | ////////////////////////////////////////////////////////////////////// |
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| 334 | ////////////////////////////////////////////////////////////////////// |
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| 335 | |
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[83] | 336 | ///\e |
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| 337 | |
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| 338 | ///\relates XmlIo |
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| 339 | /// |
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[39] | 340 | template<class A> |
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[83] | 341 | void xml(XmlIo &x,std::auto_ptr<A> &v) |
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[39] | 342 | { |
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[83] | 343 | if(x.write()) v=new A; |
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[39] | 344 | x(*v); |
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| 345 | } |
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[83] | 346 | |
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| 347 | ///\e |
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| 348 | |
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| 349 | ///\relates XmlIo |
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| 350 | /// |
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[39] | 351 | template<class A,class B> |
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[83] | 352 | void xml(XmlIo &x,std::pair<A,B> &v) |
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[39] | 353 | { |
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| 354 | x("first",v.first); |
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| 355 | x("second",v.second); |
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| 356 | } |
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| 357 | |
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[83] | 358 | ///\e |
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| 359 | |
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| 360 | ///\relates XmlIo |
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| 361 | /// |
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| 362 | template<class T> |
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| 363 | void xml(XmlIo &x,std::list<T> &v) |
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[39] | 364 | { |
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[83] | 365 | if(x.write()) |
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| 366 | for(typename std::list<T>::const_iterator it=v.begin(); |
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| 367 | it!=v.end();++it) x("item",*it); |
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| 368 | else while(x.nextTag()=="item") |
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[39] | 369 | { |
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| 370 | v.push_back(T()); |
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| 371 | x("item",v.back()); |
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| 372 | } |
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| 373 | } |
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[83] | 374 | ///\e |
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| 375 | |
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| 376 | ///\relates XmlIo |
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| 377 | /// |
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[39] | 378 | template<class T> |
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[83] | 379 | void xml(XmlIo &x,std::vector<T> &v) |
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[39] | 380 | { |
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[83] | 381 | if(x.write()) |
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| 382 | for(typename std::vector<T>::const_iterator it=v.begin(); |
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| 383 | it!=v.end();++it) x("item",*it); |
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| 384 | else while(x.nextTag()=="item") |
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[39] | 385 | { |
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| 386 | v.push_back(T()); |
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| 387 | x("item",v.back()); |
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| 388 | } |
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| 389 | } |
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| 390 | |
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[83] | 391 | ///\e |
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| 392 | |
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| 393 | ///\relates XmlIo |
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| 394 | /// |
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[39] | 395 | template<class K,class V> |
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[83] | 396 | void xml(XmlIo &x,std::map<K,V> &v) |
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[39] | 397 | { |
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[83] | 398 | if(x.write()) |
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| 399 | for(typename std::map<K,V>::const_iterator it=v.begin(); |
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| 400 | it!=v.end();++it) x("item",*it); |
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| 401 | else while(x.nextTag()=="item") |
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[39] | 402 | { |
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| 403 | typename std::map<K,V>::value_type it; |
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| 404 | x("item",it); |
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| 405 | v.insert(it); |
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| 406 | } |
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| 407 | } |
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| 408 | |
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[83] | 409 | ///\e |
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| 410 | |
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| 411 | ///\relates XmlIo |
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| 412 | /// |
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[39] | 413 | template<class T> |
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[150] | 414 | void xml(XmlIo &x,lemon::dim2::Point<T> &v) |
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[39] | 415 | { |
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[83] | 416 | { XmlIo::LineTag t(x,"x"); x(v.x); } |
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| 417 | { XmlIo::ContTag t(x,"y"); x(v.y); } |
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[39] | 418 | } |
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| 419 | |
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[83] | 420 | ///\e |
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| 421 | |
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| 422 | ///\relates XmlIo |
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| 423 | /// |
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[39] | 424 | template<class T> |
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[150] | 425 | void xml(XmlIo &x,lemon::dim2::BoundingBox<T> &v) |
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[39] | 426 | { |
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[83] | 427 | if(x.write()) { |
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| 428 | if(!v.empty()) { |
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| 429 | x("point",v.bottomLeft()); |
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| 430 | if(v.bottomLeft()!=v.topRight()) x("point",v.topRight()); |
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| 431 | } |
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[39] | 432 | } |
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[83] | 433 | else { |
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| 434 | v.clear(); |
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| 435 | while(x.nextTag()=="point") { |
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[150] | 436 | lemon::dim2::Point<T> co; |
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[83] | 437 | x("point",co); |
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| 438 | v.add(co); |
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| 439 | } |
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[39] | 440 | } |
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| 441 | } |
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[2] | 442 | |
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| 443 | } |
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[83] | 444 | |
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