Data commit

Task/Bitmap-Read-a-PPM-file/C-sharp/bitmap-read-a-ppm-file.cs

@@ -0,0 +1,33 @@
+using System.IO;
+class PPMReader
+{
+    public static Bitmap ReadBitmapFromPPM(string file)
+    {
+        var reader = new BinaryReader(new FileStream(file, FileMode.Open));
+        if (reader.ReadChar() != 'P' || reader.ReadChar() != '6')
+            return null;
+        reader.ReadChar(); //Eat newline
+        string widths = "", heights = "";
+        char temp;
+        while ((temp = reader.ReadChar()) != ' ')
+            widths += temp;
+        while ((temp = reader.ReadChar()) >= '0' && temp <= '9')
+            heights += temp;
+        if (reader.ReadChar() != '2' || reader.ReadChar() != '5' || reader.ReadChar() != '5')
+            return null;
+        reader.ReadChar(); //Eat the last newline
+        int width = int.Parse(widths),
+            height = int.Parse(heights);
+        Bitmap bitmap = new Bitmap(width, height);
+        //Read in the pixels
+        for (int y = 0; y < height; y++)
+            for (int x = 0; x < width; x++)
+                bitmap.SetPixel(x, y, new Bitmap.Color()
+                {
+                    Red = reader.ReadByte(),
+                    Green = reader.ReadByte(),
+                    Blue = reader.ReadByte()
+                });
+        return bitmap;
+    }
+}