[8] | 1 | /*
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| 2 | * TOPPERS Software
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| 3 | * Toyohashi Open Platform for Embedded Real-Time Systems
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| 4 | *
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| 5 | * Copyright (C) 2007-2008 by TAKAGI Nobuhisa
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| 6 | *
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| 7 | * ãLì ÒÍCȺÌ(1)`(4)Ìðð½·êÉÀèC{\tgEF
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| 8 | * Ai{\tgEFAðüϵ½àÌðÜÞDȺ¯¶jðgpE¡»Eü
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| 9 | * ÏEÄzziȺCpÆÄÔj·é±Æð³Åø·éD
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| 10 | * (1) {\tgEFAð\[XR[hÌ`Åp·éêÉÍCãLÌì
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| 11 | * \¦C±Ìpð¨æѺL̳ÛØKèªC»ÌÜÜÌ`Å\[
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| 12 | * XR[hÉÜÜêÄ¢é±ÆD
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| 13 | * (2) {\tgEFAðCCu`®ÈÇC¼Ì\tgEFAJÉg
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| 14 | * pÅ«é`ÅÄzz·éêÉÍCÄzzɺ¤hL
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| 15 | gip
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| 16 | * Ò}j
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| 17 | AÈÇjÉCãLÌì \¦C±Ìpð¨æѺL
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| 18 | * ̳ÛØKèðfÚ·é±ÆD
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| 19 | * (3) {\tgEFAðC@íÉgÝÞÈÇC¼Ì\tgEFAJÉg
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| 20 | * pÅ«È¢`ÅÄzz·éêÉÍCÌ¢¸ê©Ìðð½·±
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| 21 | * ÆD
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| 22 | * (a) Äzzɺ¤hL
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| 23 | gipÒ}j
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| 24 | AÈÇjÉCãLÌ
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| 25 | * ì \¦C±Ìpð¨æѺL̳ÛØKèðfÚ·é±ÆD
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| 26 | * (b) ÄzzÌ`ÔðCÊÉèßéû@ÉæÁÄCTOPPERSvWFNgÉ
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| 27 | * ñ·é±ÆD
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| 28 | * (4) {\tgEFAÌpÉæè¼ÚIܽÍÔÚIɶ¶é¢©Èé¹
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| 29 | * Q©çàCãLì Ò¨æÑTOPPERSvWFNgðÆÓ·é±ÆD
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| 30 | * ܽC{\tgEFAÌ[UܽÍGh[U©çÌ¢©Èé
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| 31 | * RÉîÿ©çàCãLì Ò¨æÑTOPPERSvWFNgð
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| 32 | * ÆÓ·é±ÆD
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| 33 | *
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| 34 | * {\tgEFAÍC³ÛØÅñ³êÄ¢éàÌÅ éDãLì Ò¨
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| 35 | * æÑTOPPERSvWFNgÍC{\tgEFAÉÖµÄCÁèÌgpÚI
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| 36 | * ÉηéK«àÜßÄC¢©ÈéÛØàsíÈ¢DܽC{\tgEF
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| 37 | * AÌpÉæè¼ÚIܽÍÔÚIɶ¶½¢©Èé¹QÉÖµÄàC»
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| 38 | * ÌÓCðíÈ¢D
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| 39 | *
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| 40 | */
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| 41 |
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| 42 | /*!
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| 43 | * \file toppers/csv.hpp
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| 44 | * \brief CSVt@CüoÍÉÖ·éé¾è`
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| 45 | */
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| 46 | #ifndef TOPPERS_CSV_HPP_
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| 47 | #define TOPPERS_CSV_HPP_
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| 48 |
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| 49 | #include <stdexcept>
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| 50 | #include <ostream>
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| 51 | #include <iterator>
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| 52 | #include <string>
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| 53 | #include <vector>
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| 54 | #include <algorithm>
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| 55 | #include <boost/utility.hpp>
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| 56 | #include "toppers/misc.hpp"
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| 57 |
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| 58 | namespace toppers
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| 59 | {
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| 60 |
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| 61 | class csv_error : public std::runtime_error
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| 62 | {
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| 63 | public:
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| 64 | explicit csv_error( long line )
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| 65 | : std::runtime_error( "CSV parse error" ), line_( line )
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| 66 | {
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| 67 | }
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| 68 | long line() const
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| 69 | {
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| 70 | return line_;
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| 71 | }
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| 72 | private:
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| 73 | long line_;
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| 74 | };
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| 75 |
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| 76 | /*!
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| 77 | * \class basic_csv csv.hpp "toppers/csv.hpp"
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| 78 | * \brief CSV t@CÌðÍNX
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| 79 | */
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| 80 | template < typename CharT, class Traits = std::char_traits< CharT > >
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| 81 | class basic_csv
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| 82 | {
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| 83 | public:
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| 84 | typedef std::basic_string< CharT, Traits > string_type;
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| 85 | typedef typename std::vector< std::vector< string_type > >::const_iterator const_iterator;
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| 86 | typedef typename std::vector< std::vector< string_type > >::const_reference const_reference;
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| 87 | typedef typename std::vector< std::vector< string_type > >::value_type value_type;
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| 88 | typedef typename std::vector< std::vector< string_type > >::size_type size_type;
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| 89 |
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| 90 | basic_csv();
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| 91 | template < class InputIterator >
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| 92 | basic_csv( InputIterator first, InputIterator last )
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| 93 | {
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| 94 | read( first, last );
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| 95 | }
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| 96 |
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| 97 | template < class InputIterator >
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| 98 | void read( InputIterator first, InputIterator last )
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| 99 | {
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| 100 | const CharT dquo = widen< CharT >( '\"' );
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| 101 | const CharT comma = widen< CharT >( ',' );
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| 102 | const CharT lf = widen< CharT >( '\n' );
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| 103 | enum
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| 104 | {
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| 105 | none,
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| 106 | non_escaped,
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| 107 | escape_opened,
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| 108 | escape_closed
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| 109 | } state = none;
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| 110 | std::vector< std::vector< string_type > > records;
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| 111 | std::vector< string_type > record;
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| 112 | string_type field;
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| 113 | long line = 1;
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| 114 |
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| 115 | record.reserve( 16 );
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| 116 | field.reserve( 255 );
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| 117 |
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| 118 | while ( first != last )
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| 119 | {
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| 120 | CharT ch = *first;
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| 121 | if ( ch == dquo )
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| 122 | {
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| 123 | switch ( state )
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| 124 | {
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| 125 | case none:
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| 126 | state = escape_opened;
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| 127 | break;
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| 128 | case escape_opened:
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| 129 | ++first;
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| 130 | ch = *first;
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| 131 | if ( ch == dquo ) // "" ¾Á½ÌÅA" ðÇÁ
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| 132 | {
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| 133 | field.push_back( dquo );
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| 134 | }
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| 135 | else // ¶ "
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| 136 | {
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| 137 | state = escape_closed;
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| 138 | }
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| 139 | continue; // ++first ð±êÈãÀs³¹È¢
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| 140 | default:
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| 141 | throw csv_error( line );
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| 142 | break;
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| 143 | }
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| 144 | }
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| 145 | else // ch != dquo
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| 146 | {
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| 147 | if ( state == escape_opened )
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| 148 | {
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| 149 | field.push_back( ch );
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| 150 | }
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| 151 | else
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| 152 | {
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| 153 | if ( ch == comma || ch == lf )
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| 154 | {
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| 155 | record.push_back( field );
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| 156 | field.clear();
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| 157 | state = none;
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| 158 | if ( ch == lf ) // üsiRFC4180 Å͵§ÉÍ CR-LF ȯêÎÈçÈ¢ªAÆè ¦¸ '\n' Æ·éj
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| 159 | {
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| 160 | records.push_back( record );
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| 161 | record.clear();
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| 162 | ++line;
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| 163 | }
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| 164 | }
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| 165 | else
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| 166 | {
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| 167 | field.push_back( ch );
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| 168 | // CharT const* debug_string = field.c_str();
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| 169 | }
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| 170 | }
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| 171 | }
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| 172 | ++first;
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| 173 | }
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| 174 | records_.swap( records );
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| 175 | }
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| 176 | template < class OutputIterator >
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| 177 | void write( OutputIterator result ) const
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| 178 | {
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| 179 | const CharT dquo = widen< CharT >( '\"' );
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| 180 | const CharT comma = widen< CharT >( ',' );
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| 181 | const CharT lf = widen< CharT >( '\n' );
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| 182 |
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| 183 | for ( typename std::vector< std::vector< string_type > >::const_iterator r_iter( records_.begin() ), r_last( records_.end() );
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| 184 | r_iter != r_last;
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| 185 | ++r_iter )
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| 186 | {
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| 187 | for ( typename std::vector< string_type >::const_iterator f_iter( r_iter->begin() ), f_last( r_iter->end() );
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| 188 | f_iter != f_last;
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| 189 | ++f_iter )
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| 190 | {
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| 191 | std::string field;
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| 192 | bool need_escape = false;
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| 193 |
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| 194 | for ( typename string_type::const_iterator s_iter( f_iter->begin() ), s_last( f_iter->end() );
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| 195 | s_iter != s_last;
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| 196 | ++s_iter )
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| 197 | {
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| 198 | CharT ch = *s_iter;
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| 199 | if ( ch == dquo )
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| 200 | {
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| 201 | field.push_back( dquo );
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| 202 | need_escape = true;
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| 203 | }
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| 204 | else if ( ch == comma || ch == lf )
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| 205 | {
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| 206 | need_escape = true;
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| 207 | }
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| 208 | field.push_back( ch );
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| 209 | }
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| 210 |
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| 211 | if ( need_escape )
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| 212 | {
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| 213 | field = dquo + field + dquo;
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| 214 | }
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| 215 | result = std::copy( field.begin(), field.end(), result );
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| 216 | if ( boost::next( f_iter ) != f_last )
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| 217 | {
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| 218 | *result++ = comma;
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| 219 | }
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| 220 | }
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| 221 | *result++ = lf;
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| 222 | }
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| 223 | }
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| 224 |
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| 225 | const_iterator begin() const
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| 226 | {
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| 227 | return records_.begin();
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| 228 | }
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| 229 | const_iterator end() const
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| 230 | {
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| 231 | return records_.end();
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| 232 | }
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| 233 | const_reference at( size_type pos ) const
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| 234 | {
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| 235 | return records_.at( pos );
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| 236 | }
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| 237 | const_reference operator[]( size_type pos ) const
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| 238 | {
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| 239 | return records_[ pos ];
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| 240 | }
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| 241 | bool empty() const
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| 242 | {
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| 243 | return records_.empty();
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| 244 | }
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| 245 | size_type size() const
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| 246 | {
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| 247 | return records_.size();
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| 248 | }
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| 249 | void swap( basic_csv& other )
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| 250 | {
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| 251 | records_.swap( other.records_ );
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| 252 | }
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| 253 | private:
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| 254 | std::vector< std::vector< string_type > > records_;
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| 255 | };
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| 256 |
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| 257 | typedef basic_csv< char > csv;
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| 258 | typedef basic_csv< wchar_t > wcsv;
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| 259 |
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| 260 | }
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| 261 |
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| 262 | #endif // TOPPERS_CSV_HPP_
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