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/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2025 Dominik Reichl <dominik.reichl@t-online.de>
This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
using KeePassLib.Utility;
namespace KeePass.DataExchange
{
public sealed class CsvStreamReader
{
private readonly CharStream m_sChars;
private readonly bool m_bAllowUnquoted;
[Obsolete]
public CsvStreamReader(string strData) : this(strData, false)
{
}
public CsvStreamReader(string strData, bool bAllowUnquoted)
{
m_sChars = new CharStream(strData);
m_bAllowUnquoted = bAllowUnquoted;
}
public string[] ReadLine()
{
char chFirst = m_sChars.PeekChar();
if(chFirst == char.MinValue) return null;
if((chFirst == '\r') || (chFirst == '\n'))
{
m_sChars.ReadChar(); // Advance
return MemUtil.EmptyArray<string>();
}
List<string> l = new List<string>();
StringBuilder sb = new StringBuilder();
bool bInField = false;
while(true)
{
char ch = m_sChars.ReadChar();
if(ch == char.MinValue) break;
if(ch == '\"')
{
if(!bInField) bInField = true;
else if(m_sChars.PeekChar() == '\"')
{
m_sChars.ReadChar();
sb.Append('\"');
}
else
{
if(!m_bAllowUnquoted)
{
l.Add(sb.ToString());
if(sb.Length != 0) sb.Remove(0, sb.Length);
}
bInField = false;
}
}
else if(((ch == '\r') || (ch == '\n')) && !bInField) break;
else if(bInField) sb.Append(ch);
else if(m_bAllowUnquoted)
{
if(ch == ',')
{
l.Add(sb.ToString());
if(sb.Length != 0) sb.Remove(0, sb.Length);
}
else sb.Append(ch);
}
}
Debug.Assert(!bInField);
Debug.Assert(m_bAllowUnquoted || (sb.Length == 0));
if(m_bAllowUnquoted || (sb.Length != 0))
l.Add(sb.ToString());
return l.ToArray();
}
}
}
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