rsfetch

This is a WIP rewrite of rsfetch from scratch.
I've been really unhappy with the codebase now for various reasons.
It's made development for rsfetch downright unpleasant at times.

---

A blazing fast (<20 ms) information fetching utility.
According to hyperfine anyways.

Table of Contents:

• Example Output
• Extra Info
• Features
• Help
• TODO

Example Output

$ cargo run --features=music -- -cDdEeghkmMstuUp portage

CPU:          Intel Core i5-3470 CPU @ 3.20GHz
Device:       OptiPlex 7010
Distro:       Gentoo
Editor:       /usr/bin/emacsclient
Environment:  bspwm
GPU:          AMD/ATI Cedar Radeon HD 5000/6000/7350/8350 Series
Hostname:     gentoo
Kernel:       5.4.48-ck-valley
Memory:       15971 MB
Packages:     87 (explicit), 570 (total)
Shell:        /bin/bash
Terminal:     xterm
Uptime:       2d 9h 54m
User:         valley
Music:        System Of A Down - System Of A Down (1998) - Know

$ cargo run --features=music,pretty_output -- -cDdEeghkmMstuUp portage -C 0

0──────────────────────────────────────────────────────────────────────0
│ CPU         │ Intel Core i5-3470 CPU @ 3.20GHz                       │
│ Distro      │ Gentoo                                                 │
│ Device      │ OptiPlex 7010                                          │
│ Editor      │ /usr/bin/emacsclient                                   │
│ Environment │ bspwm                                                  │
│ GPU         │ AMD/ATI Cedar Radeon HD 5000/6000/7350/8350 Series     │
│ Hostname    │ gentoo                                                 │
│ Kernel      │ 5.4.48-ck-valley                                       │
│ Memory      │ 15971 MB                                               │
│ Packages    │ 87 (explicit), 570 (total)                             │
│ Shell       │ /bin/bash                                              │
│ Terminal    │ xterm                                                  │
│ Uptime      │ 2d 9h 54m                                              │
│ User        │ valley                                                 │
│ Music       │ System Of A Down - System Of A Down (1998) - Suite-Pee │
0──────────────────────────────────────────────────────────────────────0

Extra info

Crate deps and binary size depending on features for rsfetch:

• No Features: 16 crates, 2.5 MB (not stripped), 868 KB (stripped)
• music: 20 crates, 2.6 MB (not stripped), 940 KB (stripped)
• pretty_output: 36 crates, 2.6 MB (not stripped), 1.0 MB (stripped)
• music,pretty_output: 40 crates, 2.7 MB (not stripped), 1.1 MB (stripped)

Crates explicitely used, and why:

• clap: CLI framework
• mpd: completely optional, used for the feature music
• nixinfo: contains all of the information gathering functions
• prettytable-rs: completely optional, used for the feature pretty_output

Tokei stats (cropped to save space): tokei -t=rust .

===============================================================================
 Language            Files        Lines         Code     Comments       Blanks
===============================================================================
 Rust                    2          224          219            0            5
===============================================================================

Features

Currently there are 2 features. They are completely optional.

• music, this will cause nixinfo to pull in the mpd crate, and display the music info as:

artist - album (date) - title

• pretty_output, this will cause rsfetch to pull in the prettytable-rs crate, see example above for how it looks.

Help

$ cargo run -- --help

rsfetch 0.1.0
Phate6660 <https://pages.codeberg.org/Phate6660>

An info fetch tool written in Rust. Everything is off by default, enable what you want.

USAGE:
    rsfetch [FLAGS] [OPTIONS]

FLAGS:
    -c               Display the model of the CPU.
    -D               Display the name of the device.
    -d               Display the name of the distro.
    -E               Display the name of the user's editor. Must have the $EDITOR environmental variable set.
    -e               Display the user's environment. First checks for a DE, before resorting to parsing your
                     $HOME/.xinitrc for your WM.
        --help       Prints help information
    -h               Display the hostname of the device.
    -k               Display the name of the kernel.
    -m               Display free/total memory.
    -M               Display currently playing music. Only mpd is supported. Must be built with the music feature.
    -s               Display the name of the user's shell.
    -t               Display the name of the user's terminal.
    -u               Display the uptime.
    -U               Display the name of the user.
    -V, --version    Prints version information

OPTIONS:
    -C, --corner <char>         Set the corner character.
    -p, --packages <manager>    Display package count.
    -T, --temperature <C/F>     Display CPU temp for Raspberry Pi, must have CPU field enabled.

TODO

• better pretty output by either handling it myself (scary!) or replacing prettytable-rs with a lighter crate
• implement async
• information gathering functions are split off into a separate lib (implemented -- nixinfo)