public StateCol(enReadState s, bool addValue)
{
RowEnd = false; AddValue = addValue; NeedChange = true; StateTo = s;
}
public StateCol(bool rowEnd)
{
RowEnd = true; AddValue = false; NeedChange = true; StateTo = enReadState.FieldStart;
}
public StateCol()
{
RowEnd = false; AddValue = false; NeedChange = false; StateTo = enReadState.Error;
}
public StateRow(enReadState s, bool addValue)
{
AddValue = addValue; NeedChange = true; StateTo = s;
}
public StateRow(enReadState s)
{
AddValue = false; NeedChange = true; StateTo = s;
}
public StateRow()
{
AddValue = false; NeedChange = false; StateTo = enReadState.Error;
}
//读取一个单元格的数据，返回值为false表示读取不到数据或者出错了
public bool Read()
{
if (m_state == enReadState.Error)
{
return(false);
}
//到最尾了
if (m_idx >= m_bufferLength)
{
m_isEndOfRow = true;
if (m_value.Length > 0)
{
m_value.Remove(0, m_value.Length);
}
return(false);
}
//检错下
if (m_state != enReadState.FieldStart)
{
Debuger.LogError("逻辑出错");
m_state = enReadState.FieldStart;
}
//初始化下
bool oldEndOfRow = m_isEndOfRow;
m_isEndOfRow = false;
if (m_value.Length > 0)
{
m_value.Remove(0, m_value.Length);
}
//开始逐个解析
char c;
StateRow table;
StateCol handle;
do
{
c = m_buffer[m_idx++];
table = s_parseTable[m_state];
handle = table[c];
if (handle != null)
{
if (handle.NeedChange)
{
m_state = handle.StateTo;
}
if (handle.AddValue)
{
m_value.Append(c);
}
if (handle.RowEnd)
{
m_isEndOfRow = true;
if (m_state != enReadState.FieldStart)
{
Debuger.LogError(string.Format("没有读取完却标志了换行标识 行:{0} 列:{1}", m_row, m_col));
}
}
}
else if (table.NeedChange)
{
m_state = table.StateTo;
if (table.AddValue)
{
m_value.Append(c);
}
}
else
{
m_value.Append(c);
}
if (m_state == enReadState.FieldStart || (m_idx >= m_bufferLength && m_state == enReadState.NonQuotesField) || (m_idx >= m_bufferLength && m_state == enReadState.QuoteInQuotesField))
{
//计算行列
if (oldEndOfRow)
{
++m_row;
m_col = 0;
}
else
{
++m_col;
}
return(true);
}
//判断各种出错情况
if (m_state == enReadState.Error || m_idx >= m_bufferLength)
{
//if (m_value.Length > 0)m_value.Remove(0, m_value.Length);
m_state = enReadState.Error;
return(false);
}
}while(true);
}
