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/*
Copyright (C) 2021-2024 Selwin van Dijk
This file is part of signalbackup-tools.
signalbackup-tools is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
signalbackup-tools is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with signalbackup-tools. If not, see <https://www.gnu.org/licenses/>.
*/
#include "csvreader.ih"
CSVReader::CSVState CSVReader::readRow(std::string const &row, CSVReader::CSVState laststate)
{
CSVState state = laststate;
size_t i = 0;
if (laststate == CSVState::UNQUOTEDFIELD)
{
d_results.resize(d_results.size() + 1); // got next row, make room
d_results.back().emplace_back("");
}
else
i = d_results.back().size() - 1;
for (unsigned int c = 0; c < row.size(); ++c)
{
switch (state)
{
case CSVState::UNQUOTEDFIELD:
switch (row[c])
{
case ',': // end of field
d_results.back().push_back("");
++i;
break;
case '"':
state = CSVState::QUOTEDFIELD;
break;
default:
d_results.back()[i].push_back(row[c]);
break;
}
break;
case CSVState::QUOTEDFIELD:
switch (row[c])
{
case '"':
state = (c == row.size() - 1) ? CSVState::UNQUOTEDFIELD : CSVState::QUOTEDQUOTE;
break;
default:
d_results.back()[i].push_back(row[c]);
break;
}
break;
case CSVState::QUOTEDQUOTE:
switch (row[c])
{
case ',': // , after closing quote
d_results.back().push_back("");
++i;
state = CSVState::UNQUOTEDFIELD;
break;
case '"': // "" -> "
d_results.back()[i].push_back('"');
state = CSVState::QUOTEDFIELD;
break;
default: // end of quote
state = CSVState::UNQUOTEDFIELD;
break;
}
break;
}
}
if (state != CSVState::UNQUOTEDFIELD)
d_results.back()[i].push_back('\n');
return state;
}
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