/// <summary>
/// Parse string line to array of argument
/// </summary>
/// <param name="commandLine"></param>
/// <returns>Array from string that represent arguments</returns>
public static string[] Parse(string commandLine)
{
var args = new Arguments();
char lastChar = default(char);
var enumerator = commandLine.ToArray().GetEnumerator();
while (enumerator.MoveNext())
{
var curChar = (char)enumerator.Current;
var isQuoteChar = IsQuoteChar(curChar, out var quoteType);
var lastIsScapeChar = IsScapeChar(lastChar);
// check if is a phase cenary; have quotes
// 1) Is quote char (" or ')
// 2) AND the last is not a scape char (\)
var beginQuote = isQuoteChar && !lastIsScapeChar;
if (!beginQuote)
{
if (curChar == ' ')
{
args.CloseArgument();
}
else
{
if (lastIsScapeChar && isQuoteChar)
{
args.RemoveLastChar();
}
args.AddInCurrent(curChar);
}
}
else
{
// if here, the current char is a quote " or '
while (enumerator.MoveNext())
{
curChar = (char)enumerator.Current;
if (curChar == quoteType)
{
if (IsScapeChar(lastChar))
{
args.RemoveLastChar();
args.AddInCurrent(quoteType);
}
else
{
// prevent empty quote
// cmd> --arg1 -> 1 args
// cmd> --arg1 "" -> 2 args
if (args.GetCurrentChars().Length == 0)
{
args.AddInCurrent('\0');
}
break;
}
}
else
{
args.AddInCurrent(curChar);
}
lastChar = curChar;
}
}
lastChar = curChar;
}
args.CloseArgument();
return(args.GetArguments());
}
