Soft wrap text with fold and tput cols

[newbee1905]

(Upgrade from #2)

• (feat) Soft wrap text with fold
• (feat) MD syntax for bat|non fixed width for fold

Fold is a gnu utils
Tested with docker image for freebsd test
tput is from ncurses -> probably already existed
Minus the real terminal's width by 10 because of space of the number row

Improve reading experience with softwrap

[mrfluffy-dev]

although the word wrapping is cool the problem I have is the wrapping doesn't take in to account the size of the terminal so going full screen won't have the desired effect.

[newbee1905]

I've already added tput cols to get curent terminal size though

[mrfluffy-dev]

could you change the open_text.rs to something like this.

use std::io::Result;
use std::process::{Command, ExitStatus, Stdio};
extern crate termsize;
pub fn open_bat() -> Result<ExitStatus> {
    let termsize::Size {rows: _, cols} = termsize::get().unwrap();
    let soft_wrap = match Command::new("fold")
        .arg("-s")
        .arg("-w")
        .arg((cols-9).to_string())
        .arg("/tmp/log_e")
        .stdout(Stdio::piped())
        .spawn()
    {
        Err(why) => panic!("couldn't spawn wc: {}", why),
        Ok(soft_wrap) => soft_wrap,
    };

    Command::new("bat")
        .arg("--paging")
        .arg("always")
        .stdin(soft_wrap.stdout.unwrap())
        .spawn()?
        .wait()
}

note I am using the crate termsize = "0.1.6"

also note the -9 in the arg this is coz of the line numbering in bat that has a with of 9.

[mrfluffy-dev]

looks good 🙏 thanks.