private IReadOnlyList <Token> ConstructTokens(string p)
{
var tokens = new List <Token>();
for (var i = 0; i < p.Length; i++)
{
var currentToken = new Token();
while (i < p.Length && p[i] != AnySequence)
{
currentToken.AddChar(p[i++]);
}
if (currentToken.Pattern.Length != 0)
{
tokens.Add(currentToken);
}
if (i < p.Length && p[i] == AnySequence)
{
currentToken = new Token();
currentToken.AddChar(AnySequence);
tokens.Add(currentToken);
}
}
for (int i = 0; i + 1 < tokens.Count; i++)
{
//i.e. consequent *
//impossible case is like aa = aa, as it should be one token aaaa
if (tokens[i].Pattern == tokens[i + 1].Pattern)
{
tokens.RemoveAt(i--);
}
}
var distanceToStart = 0;
for (int i = 0; i < tokens.Count; i++)
{
tokens[i].FromStart = distanceToStart;
distanceToStart += tokens[i].Priority;
}
var distanceToEnd = 0;
for (int i = tokens.Count - 1; i >= 0; i--)
{
tokens[i].FromEnd = distanceToEnd;
distanceToEnd += tokens[i].Priority;
}
return(tokens);
}
public void ParseSVGPath(string p)
{
Token Current = new Token();
for (int i = 0; i < p.Length; i++)
{
if (Current.AddChar(p[i]) == false)
{
Tokens.Add(Current);
Current = new Token();
Current.AddChar(p[i]);
}
}
if (Current.Type != TokenType.NoType)
{
Current.AddChar(' ');
Tokens.Add(Current);
}
Token N = NextToken();
while (N != null)
{
switch (N.command)
{
case 'M': MoveToAbs(NextToken().value, NextToken().value); break;
case 'm': MoveToRel(NextToken().value, NextToken().value); break;
case 'L': LineToAbs(NextToken().value, NextToken().value); break;
case 'l':
LineToRel(NextToken().value, NextToken().value);
break;
case 'H':
HorizToAbs(NextToken().value);
break;
case 'h':
HorizToRel(NextToken().value);
break;
case 'V':
VertToAbs(NextToken().value);
break;
case 'v':
VertToRel(NextToken().value);
break;
case 'C':
CurveToAbs(NextToken().value, NextToken().value, NextToken().value, NextToken().value, NextToken().value, NextToken().value);
break;
case 'c':
CurveToRel(NextToken().value, NextToken().value, NextToken().value, NextToken().value, NextToken().value, NextToken().value);
break;
case 'Z':
case 'z':
ClosePoly();
break;
}
N = NextToken();
}
ClosePoly();
}
