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use crate::error::{Error, PermissionType, Result};
use crossterm::event::{read, Event, KeyCode, KeyEvent};
use crossterm::terminal;
use std::fs::File;
use std::io::ErrorKind;
use std::path::PathBuf;
pub fn open_file(filename: &PathBuf) -> Result<Option<File>> {
File::open(filename).map(Some).or_else(|e| match e {
e if e.kind() == ErrorKind::NotFound => Ok(None),
e if e.kind() == ErrorKind::PermissionDenied => {
Err(Error::Permissions(PermissionType::Read, filename.clone()))
}
e => Err(Error::from(e)),
})
}
pub fn create_file(filename: &PathBuf) -> Result<File> {
File::create(filename).map_err(|e| {
if e.kind() == ErrorKind::PermissionDenied {
Error::Permissions(PermissionType::Write, filename.clone())
} else {
Error::from(e)
}
})
}
pub fn wait_for_char(c: char) -> Result<bool> {
terminal::enable_raw_mode()?;
let mut pressed = false;
loop {
match read()? {
Event::Key(KeyEvent {
code: KeyCode::Char(ch),
..
}) if ch == c => {
pressed = true;
break;
}
Event::Key(_) => break,
_ => (),
}
}
terminal::disable_raw_mode()?;
Ok(pressed)
}
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