private static IEnumerable <string> SplitPathData(string pathData)
{
foreach (var split in PathDataSplitter.SplitByCommands(pathData))
{
yield return(split[0].ToString());
var parameters = PathDataSplitter.SplitParameters(split.Substring(1));
foreach (var x in parameters)
{
yield return(x);
}
}
}
public static string Fix([CanBeNull] string pathData)
{
const char moveToUpper = 'M';
pathData = pathData?.Trim();
if (string.IsNullOrEmpty(pathData))
{
return(pathData);
}
if (char.ToUpper(pathData[0]) != moveToUpper)
{
throw new UnsupportedFormatException("Path data must begin with a moveto command.");
}
var result = new StringBuilder();
foreach (var split in PathDataSplitter.SplitByCommands(pathData))
{
var command = split[0];
var parameters = PathDataSplitter.SplitParameters(split.Substring(1)).Select(ReformatParameter).ToArray();
Func <IEnumerable <string>, string> join = x => string.Join(" ", x);
result.Append(command);
if (char.ToUpper(command) == moveToUpper && parameters.Length > 2)
{
var lineTo = char.IsUpper(command) ? 'L' : 'l';
result.Append(join(parameters.Take(2)));
result.Append(lineTo);
result.Append(join(parameters.Skip(2)));
}
else
{
result.Append(join(parameters));
}
}
result[0] = moveToUpper;
return(result.ToString());
}
