static void ParseChar(ReadOnlySpan <string> values, ref BitmapChar character)
{
foreach (var valuePair in values)
{
var splitValues = valuePair.Split("=", StringSplitOptions.TrimEntries);
var key = splitValues[0];
var value = splitValues[1];
switch (key)
{
case "id": character.Id = int.Parse(value); break;
case "x": character.X = int.Parse(value); break;
case "y": character.Y = int.Parse(value); break;
case "width": character.Width = int.Parse(value); break;
case "height": character.Height = int.Parse(value); break;
case "xoffset": character.XOffset = int.Parse(value); break;
case "yoffset": character.YOffset = int.Parse(value); break;
case "xadvance": character.XAdvance = int.Parse(value); break;
case "page": character.Page = int.Parse(value); break;
case "chnl": character.Channel = int.Parse(value); break;
}
}
}
public static BitmapFont ReadFromFile(string path)
{
var info = new Info();
var common = new CommonSettings();
var page = new Page();
BitmapChar[] chars = null;
Kerning[] kernings = null;
var charIndex = 0;
var kerningIndex = 0;
using var file = File.OpenText(path);
string line;
while ((line = file.ReadLine()) != null)
{
var values = line.SplitQuotedStrings(' ');
if (values.Length == 0)
{
continue;
}
var valueSpan = new ReadOnlySpan <string>(values, 1, values.Length - 1);
switch (values[0])
{
case "info":
ParseInfo(valueSpan, ref info);
break;
case "common":
ParseCommon(valueSpan, ref common);
break;
case "page":
ParsePage(valueSpan, ref page);
break;
case "chars":
chars = new BitmapChar[int.Parse(valueSpan[0].Split("=")[1])];
break;
case "kernings":
kernings = new Kerning[int.Parse(valueSpan[0].Split("=")[1])];
break;
case "char":
if (chars == null)
{
throw new InvalidOperationException("Chars has not been initialized, corrupt file");
}
ParseChar(valueSpan, ref chars[charIndex++]);
break;
case "kerning":
if (kernings == null)
{
throw new InvalidOperationException("Kernings has not been initialized, corrupt file");
}
ParseKerning(valueSpan, ref kernings[kerningIndex++]);
break;
}
}
// Only supports a single bitmap
return(new BitmapFont
{
Info = info,
Common = common,
Chars = chars,
Page = page,
Kernings = kernings,
Bitmap = File.ReadAllBytes(Path.Combine(Path.GetDirectoryName(path), page.File))
});
