/// <summary>
/// Parse supplied text using default settings.
/// </summary>
/// <param name="line">Line to parse.</param>
/// <returns>List with list of parse results.</returns>
public static List <List <string> > ParseTable(string line)
{
LexListSettings settings = new LexListSettings();
settings.MultipleRecordsUsingNewLine = true;
return(Parse(line, settings));
}
/// <summary>
/// Parse a non-quoted item e.g. 123 as opposed to "123".
/// </summary>
/// <param name="settings">Parse settings to use.</param>
private void ParseNonQuotedItem(LexListSettings settings)
{
// Read non-quoted text until the separator char is hit.
string item = ReadNonQuotedToken(_separatorMap, true);
if (settings.TrimWhiteSpace)
{
item = item.Trim();
}
// Store the current list item.
_tokenList.Add(item);
}
/// <summary>
/// Check for and handle new line.
/// </summary>
/// <param name="settings">Parse settings to use.</param>
/// <returns>False if no eol was detected, true if it was handled.</returns>
public bool CheckAndHandleNewLine(LexListSettings settings)
{
if (_reader.IsEol())
{
_reader.ConsumeNewLine();
// Check if newline means start of new record.
if (settings.MultipleRecordsUsingNewLine)
{
_lines.Add(_tokenList);
_tokenList = new List <string>();
}
return(true);
}
return(false);
}
/// <summary>
/// Parse a quoted item. e.g. "batman"
/// </summary>
/// <param name="settings">Parse settings to use.</param>
private void ParseQuotedItem(LexListSettings settings)
{
char quote = _reader.CurrentChar;
string item = ReadQuotedToken();
if (settings.TrimWhiteSpace)
{
item = item.Trim();
}
// Store the current list item.
_tokenList.Add(item);
// Check that closing quote is present.
if (Expect(quote))
{
_reader.ReadChar();
}
}
/// <summary>
/// Parse supplied text using supplied settings.
/// </summary>
/// <param name="text">Text to parse.</param>
/// <param name="settings">Parse settings to use.</param>
/// <returns>List with list of parse results.</returns>
public static List <List <string> > Parse(string text, LexListSettings settings)
{
LexList lex = new LexList(settings);
return(lex.ParseLines(text));
}
/// <summary>
/// Parse lines.
/// </summary>
/// <param name="text">Text to parse.</param>
/// <returns>List with list of parse results.</returns>
public List <List <string> > ParseLines(string text)
{
// First cut of lex parser.
// This needs to be handled differently and should allow whitespace to
// be a separator.
LexListSettings settings = _settings as LexListSettings;
Reset(text);
// Move to first char.
_reader.ReadChar();
// Get rid of initial whitespace.
_reader.ConsumeWhiteSpace();
while (!_reader.IsEnded())
{
if (_reader.IsWhiteSpace())
{
_reader.ConsumeWhiteSpace();
// Continue check.
// The consuming of white space always leaves
// the reader at the beginning of a non-whitespace char.
continue;
}
// Check for quotes.
else if (_reader.CurrentChar == '\'' || _reader.CurrentChar == '"')
{
ParseQuotedItem(settings);
}
else
{
ParseNonQuotedItem(settings);
}
// Check for and consume whitespace.
CheckAndConsumeWhiteSpace();
// Check for comma and consume it.
CheckAndHandleComma();
// Consume whitespace
CheckAndConsumeWhiteSpace();
// Handle new lines and whether to store
// next line as another record.
if (!CheckAndHandleNewLine(settings))
{
// Now read next char
_reader.ReadChar();
}
}
// Handle errors.
CheckAndThrowErrors();
// Token list always gets reset in the beginning of this method.
if (_tokenList.Count > 0)
{
_lines.Add(_tokenList);
}
return(_lines);
}
/// <summary>
/// Create with supplied settings.
/// </summary>
/// <param name="settings">Parse settings to use.</param>
public LexList(LexListSettings settings)
{
Init(settings);
}