public TextAmenderBuilder(string text, AmendmentBuilder builder, List <TextAmendment> amends, bool markDown = false)
{
MarkDown = markDown;
Builder = builder;
Amends = amends;
Text = new AmendedText()
{
LHS = "",
RHS = "",
InnerText = text
};
foreach (var amend in amends)
{
if (amend.Type == AmendType.Insert)
{
insert(amend);
}
else if (amend.Type == AmendType.Repeal)
{
remove(amend);
}
else
{
replace(amend);
}
}
}
void remove(TextAmendment amend)
{
AmendedText toAmend = Text;
while ((toAmend.StartIndex + toAmend.Length) < amend.Start && toAmend != null)
{
toAmend = toAmend.Next;
}
if (toAmend == null)
{
return;
}
var next = Builder.GetNextNumber(amend);
var remover = new AmendedText()
{
LHS = lhsRemove(next),
RHS = "",
InnerText = ""
};
var wordsAfter = toAmend.Words.Skip(amend.Start - toAmend.StartIndex);
var wordsRemoved = wordsAfter.Take(amend.Length);
var wordsAfterStr = string.Join(' ', wordsAfter);
var wordsRemStr = string.Join(' ', wordsRemoved);
var text = toAmend.InnerText;
text = text.Substring(0, text.Length - wordsAfterStr.Length);
var afterText = toAmend.InnerText.Substring(text.Length + wordsRemStr.Length);
var after = new AmendedText()
{
LHS = "",
RHS = toAmend.RHS,
InnerText = afterText
};
toAmend.RHS = "";
toAmend.InnerText = text;
after.Next = toAmend.Next;
toAmend.Next = remover;
remover.Next = after;
}
void insert(TextAmendment amend)
{
AmendedText toAmend = Text;
while ((toAmend.StartIndex + toAmend.Length) < amend.Start && toAmend != null)
{
toAmend = toAmend.Next;
}
if (toAmend == null)
{
return;
}
var next = Builder.GetNextNumber(amend);
var inserter = new AmendedText()
{
LHS = lhsInsertReplace(next),
RHS = rhs(),
InnerText = amend.New
};
var wordsAfter = toAmend.Words.Skip(amend.Start - toAmend.StartIndex);
var wordsBefore = toAmend.Words.Take(toAmend.Words.Count - wordsAfter.Count());
toAmend.InnerText = string.Join(' ', wordsBefore);
var after = new AmendedText()
{
RHS = toAmend.RHS,
InnerText = string.Join(' ', wordsAfter)
};
toAmend.RHS = "";
after.Next = toAmend.Next;
after.Previous = inserter;
inserter.Next = after;
inserter.Previous = toAmend;
toAmend.Next = inserter;
}
