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Build font from lines
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removed false stream handler
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@marcogruhl
marcogruhl committed May 3, 2023
1 parent b838a1b commit 9e89d30
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Showing 2 changed files with 111 additions and 104 deletions.
209 changes: 108 additions & 101 deletions BdfFontParser/BdfFont.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -14,134 +14,141 @@ public class BdfFont
public BdfFont(string path)
{
BuildMap(path);
}

public BdfFont(IEnumerable<string> lines)
{
BuildMap(lines);
}

public CharData this[char c] => _charMap[c];

/// <summary>
/// Build Map from path
/// </summary>
/// <param name="path">path to .bdf file</param>
private void BuildMap(string path)
{
IEnumerable<string> lines = File.ReadLines(path);
BuildMap(lines);
}

/// <summary>
/// https://en.wikipedia.org/wiki/Glyph_Bitmap_Distribution_Format
/// Sample used: https://en.wikipedia.org/wiki/GNU_Unifont #Hexdraw representation of the example
/// </summary>
/// <param name="path"></param>
private void BuildMap(string path)
private void BuildMap(IEnumerable<string> lines)
{
using (new FileStream(path, FileMode.Open, FileAccess.Read))
{
IEnumerable<string> lines = File.ReadLines(path);

string name = default;
char character = default;
Width sWidth = default;
Width dWidth = default;
BoundingBox boundingBox = default;
bool error = false;
string name = default;
char character = default;
Width sWidth = default;
Width dWidth = default;
BoundingBox boundingBox = default;
bool error = false;

var bitmapMode = false;
var byteLineIndex = 0;
var bitmapMode = false;
var byteLineIndex = 0;

try
try
{
foreach (var line in lines)
{
foreach (var line in lines)
if (line.StartsWith("FONTBOUNDINGBOX "))
{
if (line.StartsWith("FONTBOUNDINGBOX "))
var lineChar = line.Split(' ');
BoundingBox = new BoundingBox()
{
var lineChar = line.Split(' ');
BoundingBox = new BoundingBox()
{
X = Convert.ToInt16(lineChar[1]),
Y = Convert.ToInt16(lineChar[2]),
OffsetX = Convert.ToInt16(lineChar[3]),
OffsetY = Convert.ToInt16(lineChar[4])
};
}
else if (line.StartsWith("STARTCHAR "))
X = Convert.ToInt16(lineChar[1]),
Y = Convert.ToInt16(lineChar[2]),
OffsetX = Convert.ToInt16(lineChar[3]),
OffsetY = Convert.ToInt16(lineChar[4])
};
}
else if (line.StartsWith("STARTCHAR "))
{
name = line.Substring(10, line.Length - 10);
error = false;
}
else if (line.StartsWith("ENCODING "))
{
var lineChar = line.Substring(9, line.Length - 9);

if (UInt32.TryParse(lineChar, out var charInt))
character = Convert.ToChar(charInt);
else
error = true;
}
else if (line.StartsWith("SWIDTH "))
{
var lineChar = line.Split(' ');
sWidth = new Width()
{
name = line.Substring(10, line.Length - 10);
error = false;
}
else if (line.StartsWith("ENCODING "))
X = Convert.ToInt16(lineChar[1]),
Y = Convert.ToInt16(lineChar[2])
};
}
else if (line.StartsWith("DWIDTH "))
{
var lineChar = line.Split(' ');
dWidth = new Width()
{
var lineChar = line.Substring(9, line.Length - 9);

if(UInt32.TryParse(lineChar, out var charInt))
character = Convert.ToChar(charInt);
else
error = true;
}
else if (line.StartsWith("SWIDTH "))
X = Convert.ToInt16(lineChar[1]),
Y = Convert.ToInt16(lineChar[2])
};
}
else if (line.StartsWith("BBX "))
{
var lineChar = line.Split(' ');
boundingBox = new BoundingBox()
{
var lineChar = line.Split(' ');
sWidth = new Width()
{
X = Convert.ToInt16(lineChar[1]),
Y = Convert.ToInt16(lineChar[2])
};
X = Convert.ToInt16(lineChar[1]),
Y = Convert.ToInt16(lineChar[2]),
OffsetX = Convert.ToInt16(lineChar[3]),
OffsetY = Convert.ToInt16(lineChar[4])
};
}
else if (line.StartsWith("BITMAP"))
{
bitmapMode = true;

}
else if (line.StartsWith("DWIDTH "))
{
var lineChar = line.Split(' ');
dWidth = new Width()
{
X = Convert.ToInt16(lineChar[1]),
Y = Convert.ToInt16(lineChar[2])
};
if (error)
continue;

}
else if (line.StartsWith("BBX "))
_charMap[character] = new CharData()
{
var lineChar = line.Split(' ');
boundingBox = new BoundingBox()
{
X = Convert.ToInt16(lineChar[1]),
Y = Convert.ToInt16(lineChar[2]),
OffsetX = Convert.ToInt16(lineChar[3]),
OffsetY = Convert.ToInt16(lineChar[4])
};
}
else if (line.StartsWith("BITMAP"))
{
bitmapMode = true;
Character = character,
Bitmap = new byte[BoundingBox.Y][],
Name = name,
ScalableWidth = sWidth,
DeviceWidth = dWidth,
BoundingBox = boundingBox
};
}
else if (line.StartsWith("ENDCHAR"))
{
bitmapMode = false;
byteLineIndex = 0;
}
else if (bitmapMode)
{
if (error)
continue;

if(error)
continue;
_charMap[character].Bitmap[byteLineIndex] = new byte[line.Length / 2];

_charMap[character] = new CharData()
{
Character = character,
Bitmap = new byte[BoundingBox.Y][],
Name = name,
ScalableWidth = sWidth,
DeviceWidth = dWidth,
BoundingBox = boundingBox
};
}
else if (line.StartsWith("ENDCHAR"))
for (var i = 0; i < line.Length; i += 2)
{
bitmapMode = false;
byteLineIndex = 0;
_charMap[character].Bitmap[byteLineIndex][i / 2] = Convert.ToByte(line.Substring(i, 2), 16);
}
else if (bitmapMode)
{
if(error)
continue;

_charMap[character].Bitmap[byteLineIndex] = new byte[line.Length / 2];

for (var i = 0; i < line.Length; i += 2)
{
_charMap[character].Bitmap[byteLineIndex][i / 2] = Convert.ToByte(line.Substring(i, 2), 16);
}

byteLineIndex++;
}
byteLineIndex++;
}
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
}
}
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6 changes: 3 additions & 3 deletions BdfFontParser/BdfFontParser.csproj
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Original file line number Diff line number Diff line change
Expand Up @@ -10,13 +10,13 @@
<RepositoryUrl>https://github.com/marcogruhl/BdfFontParser</RepositoryUrl>
<RepositoryType>git</RepositoryType>
<PackageTags>BDF; Glyph Bitmap Distribution Format; Bitmap Distribution Format; C#; dotnet; .NET</PackageTags>
<FileVersion>0.2</FileVersion>
<AssemblyVersion>0.2</AssemblyVersion>
<PackageIcon>Icon.png</PackageIcon>
<Version>0.2</Version>
<Version>0.3</Version>
<PackageLicenseExpression> MIT</PackageLicenseExpression>
<IncludeSymbols>True</IncludeSymbols>
<SymbolPackageFormat>snupkg</SymbolPackageFormat>
<AssemblyVersion>$(PackageVersion)</AssemblyVersion>
<FileVersion>$(PackageVersion)</FileVersion>
</PropertyGroup>

<ItemGroup>
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