# =============== Bitmap header ================
for x in [0..13] do
- bitmap_header[x] = fileReader.read(1)[0].ascii
+ var b = fileReader.read_byte
+ if b == null then
+ return
+ end
+ bitmap_header[x] = b
end
self.file_size = get_value(bitmap_header.subarray(2, 4))
self.data_offset = get_value(bitmap_header.subarray(10, 4))
# =============== DIB header ================
for x in [0..39] do
- dib_header[x] = fileReader.read(1)[0].ascii
+ var b = fileReader.read_byte
+ if b == null then return
+ dib_header[x] = b
end
var dib_size = get_value(dib_header.subarray(0, 4))
# only support BITMAPINFOHEADER
var row = new Array[Int].with_capacity(self.width)
for y in [0..self.width[
do
- var red = fileReader.read(1)[0].ascii * 256 * 256
- var green = fileReader.read(1)[0].ascii * 256
- var blue = fileReader.read(1)[0].ascii
+ var bts = fileReader.read_bytes(3)
+ if bts.length != 3 then return
+ var red = bts[0] << 16
+ var green = bts[1] << 8
+ var blue = bts[2]
row.add(red + green + blue)
end
self.data.add(row)
fileReader.close
end #end of load_from_file method
- # Reads in a series of bytes from the FileReader when loading a Bitmap from a file
- # FileReader.read(1) is used due to https://github.com/privat/nit/issues/1264
- private fun read_chars(fr: FileReader, howMany: Int): String
- do
- var s = ""
- for x in [1..howMany]
- do
- s += fr.read(1)
- end
- return s
- end
-
# Converts the value contained in two or four bytes into an Int. Since Nit
# does not have a byte type, Int is used
private fun get_value(array: Array[Int]): Int