View Source grisp_bitmap (grisp v2.8.0)
Bitstring editing and printing.
Summary
Functions
Get a part of a bitstring.
Equivalent to get_bits(Bin, Start * 8, Len * 8)
.
Print binary as hexadecimal numbers.
Print binary as numbers.
Replace a part of a bitsting.
Equivalent to set_bits(Bin, Start * 8, Value)
.
Types
Functions
-spec get_bits(bitstring(), non_neg_integer(), non_neg_integer()) -> bitstring().
Get a part of a bitstring.
Example
1> grisp_bitmap:get_bits(<<1,2,3,4,5>>, 6, 2).
<<1:2>>
-spec get_bytes(binary(), non_neg_integer(), non_neg_integer()) -> binary().
Equivalent to get_bits(Bin, Start * 8, Len * 8)
.
-spec pp(bitstring()) -> ok.
Print binary as hexadecimal numbers.
Example
2> grisp_bitmap:pp(<<16#f2, 17>>).
F2 11
ok
Print binary as numbers.
Example
3> grisp_bitmap:pp(<<16#f2, 17>>, nib).
1111 0010 0001 0001
ok
4> grisp_bitmap:pp(<<16#f2, 17>>, #{display => bin}).
1111 0010 0001 0001
ok
-spec set_bits(bitstring(), non_neg_integer(), bitstring()) -> bitstring().
Replace a part of a bitsting.
Example
5> grisp_bitmap:pp(grisp_bitmap:set_bits(<<2#00000000>>, 6, <<2#1:1>>), bin).
00000010
ok
-spec set_bytes(binary(), non_neg_integer(), bitstring()) -> binary().
Equivalent to set_bits(Bin, Start * 8, Value)
.