pagedmov
a4f48abd49
Added non-formatted runtime to prompt escape codes Added prompt escape code that expands to the output of a shell function Reworked internal logic for termios control
43 lines
1.2 KiB
Rust
43 lines
1.2 KiB
Rust
pub mod highlight;
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pub mod readline;
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use readline::{FernVi, Readline};
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use crate::{
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expand::expand_prompt, libsh::error::ShResult, prelude::*, shopt::FernEditMode,
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};
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/// Initialize the line editor
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fn get_prompt() -> ShResult<String> {
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let Ok(prompt) = env::var("PS1") else {
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// default prompt expands to:
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//
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// username@hostname
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// short/path/to/pwd/
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// $ _
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let default =
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"\\e[0m\\n\\e[1;0m\\u\\e[1;36m@\\e[1;31m\\h\\n\\e[1;36m\\W\\e[1;32m/\\n\\e[1;32m\\$\\e[0m ";
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return expand_prompt(default);
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};
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let sanitized = format!("\\e[0m{prompt}");
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flog!(DEBUG, "Using prompt: {}", sanitized.replace("\n", "\\n"));
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expand_prompt(&sanitized)
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}
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pub fn readline(edit_mode: FernEditMode, initial: Option<&str>) -> ShResult<String> {
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let prompt = get_prompt()?;
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let mut reader: Box<dyn Readline> = match edit_mode {
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FernEditMode::Vi => {
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let mut fern_vi = FernVi::new(Some(prompt))?;
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if let Some(input) = initial {
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fern_vi = fern_vi.with_initial(input)
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}
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Box::new(fern_vi) as Box<dyn Readline>
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}
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FernEditMode::Emacs => todo!(), // idk if I'm ever gonna do this one actually, I don't use emacs
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};
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reader.readline()
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}
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