arnau478/hevi

Hex viewer

Hi! My name is Arnau

Zig lover
💾 OS-dev as a hobby
⚔️ Linux user
🧪 Coding since 2016

hevi's Issues

Do not show multiples when less than a KiB

For small files, it looks a bit weird to see File size: 294 bytes (294.00 B) at the end. It would be better to just print File size: 294 bytes in that case.

Exporters

Add "exporter" functionality. This would export the binary data into a specific format, usually a programming language constant declaration.

Example

Executing hevi some_file --exporter c would return a C array declaration, like:

unsigned char some_file[] = {0x00, 0x11, 0x22, 0x33};

Skipping lines

Add an option to skip all lines that are exactly the same as both the previous and the next one.

Example

dead beef dead beef dead beef dead beef
dead beef dead beef dead beef dead beef
dead beef dead beef dead beef dead beef
dead beef dead beef dead beef dead beef
dead beef dead beef dead beef dead beef

would turn into something like

dead beef dead beef dead beef dead beef
... 3 lines skipped ...
dead beef dead beef dead beef dead beef

Custom color

Right now, the color is hardcoded to yellow. It would be wise to allow the user to change this with a flag.

We should keep in mind how ANSI colors work. We might want the flag value to either be a color name (e.g. red) or a hex color. The first case would use color codes like ESC[33m while the latter would use ANSI truecolor.

We could of course implement some sort of truecolor detection, but that seems a bit overkill. Although I wanted to do something like that to set the --color default (#7)

Flags to disable offset and text

It would be good to have flags that disable the offset and the ASCII output

An option to hide size

Add a command line option in order to not print the file size at the end of the dump.

Possible names:

• --no-size Concise, but can be misleading
• --no-filesize/ Verbose, but solves --no-size's problem
• --no-stat Can be misleading (we're not showing a full stat, even though that's what's happening internally)

Use custom argument parser

clap is actually pretty good, but having a custom argument parser will make further development much easier.

Uppercase hex

Add an option to choose between uppercase and lowercase hexadecimal formatting

Autodetect ANSI color

Default --color to what hevi guesses, with some sort of ANSI detection

Man page

Create a man page for hevi, explaining its usage, flags, and with a link to this issue tracker.