On Saturday, 2 May 2020 at 21:05:32 UTC, Baby Beaker wrote:
I need open a Binary EXE, it can be using "rb" mode and convert
it to Hexadecimal for me make some changes and save as "rb"
again. How can I make it? Thank you.
You dont convert binary data to hexadecimal. You display it as
hexadecimal. If you want to print file contents to console in hex
do something like this.
import std.stdio;
import std.algorithm;
auto fd = File("filename", "r"); //open file for reading
ubyte[] data; //a GC allocated buffer for data
fd.rawRead(data); //read the data
data[0..50].each!(n => stdout.writef("%X ",n));
/*take 50 elements from array and for each of them call lambda
that converts ubyte to string in hex format and prints to the
stdout*/
if you want to assign to this data you can do something like this
data[0] = Oxff;
And then write to file
