H[e]x[e]r is a tool for binary-related visualisation.
hxr is brilliant at conversions. If you want to convert a number from decimal to hex:
$ hxr query -u 255
ff 00 00 00
If you want to see binary output too, add -b
$ hxr query -bu 255
ff 00 00 00
1111 1111 0000 0000 0000 0000 0000 0000
Is 4 bytes too much? Tell it the size -s
$ hxr query -bu 255 -s 1
ff
1111 1111
What about signed integers?
hxr query -bd -255
01 ff ff ff
0000 0001 1111 1111 1111 1111 1111 1111
What about text?
hxr query -t "hello"
h e l l o
68 65 6c 6c 6f
0110 1000 0110 0101 0110 1100 0110 1100 0110 1111
The evaluate command has two modes: an expression mode (experimental) and an input file mode.
To use the evaluate command with a file, simple give it a file and the type word-size for every chunk:
hxr evaluate --file main.cpp --type b
0010 0011 35
0110 1001 105
0110 1110 110
0110 0011 99
0110 1100 108
0111 0101 117
0110 0100 100
0110 0101 101
0010 0000 32
0011 1100 60
0110 0001 97
0111 0010 114
0111 0010 114
0110 0001 97
0111 1001 121
0011 1110 62
and it will read one byte at a time, and give you a decimal output of every byte.
If you have other data and know it's type, for instance a binary dump of an array of unsigned 32-bit integers:
hxr mem.bin --type u32
0110 0100 0000 0000 0000 0000 0000 0000 100
1100 1000 0000 0000 0000 0000 0000 0000 200
0010 1100 0000 0001 0000 0000 0000 0000 300
1001 0000 0000 0001 0000 0000 0000 0000 400
1111 0100 0000 0001 0000 0000 0000 0000 500
Notice how the last column in both examples is the decimal representation of the data.
The easiest way is to use nix:
nix develop
cmake --workflow --preset debug --fresh
# or
cmake --workflow --preset release --fresh