| # Inspired from https://construct.readthedocs.io/en/latest/intro.html#example |
| import construct |
| |
| format = construct.Struct( |
| "signature" / construct.Const(b"BMP"), |
| "width" / construct.Int8ub, |
| "height" / construct.Int8ub, |
| "pixels" / construct.Array(construct.this.width * construct.this.height, construct.Byte), |
| ) |
| a = format.build(dict(width=3,height=2,pixels=[7,8,9,11,12,13])) |
| assert(a == b'BMP\x03\x02\x07\x08\t\x0b\x0c\r') |
| b = format.parse(b'BMP\x03\x02\x07\x08\t\x0b\x0c\r') |
| assert(b.signature == b'BMP') |
| assert(b.width == 3) |
| assert(b.height == 2) |
| assert(b.pixels == [7, 8, 9, 11, 12, 13]) |
