/
ls_local.rs
71 lines (63 loc) 路 2.36 KB
/
ls_local.rs
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use crate::alias::{list_aliases, StoredAlias};
use crate::config::FnmConfig;
use crate::current_version::current_version;
use crate::version::Version;
use colored::*;
use snafu::{ResultExt, Snafu};
use std::collections::HashMap;
use structopt::StructOpt;
#[derive(StructOpt, Debug)]
pub struct LsLocal {}
impl super::command::Command for LsLocal {
type Error = Error;
fn apply(self, config: &FnmConfig) -> Result<(), Self::Error> {
let base_dir = config.installations_dir();
let mut versions =
crate::installed_versions::list(base_dir).context(CantListLocallyInstalledVersion)?;
versions.insert(0, Version::Bypassed);
versions.sort();
let aliases_hash = generate_aliases_hash(&config).context(CantReadAliases)?;
let curr_version = current_version(&config).ok().flatten();
for version in versions {
let version_aliases = match aliases_hash.get(&version.v_str()) {
None => "".into(),
Some(versions) => {
let version_string = versions
.iter()
.map(|x| x.name())
.collect::<Vec<_>>()
.join(", ");
format!(" {}", version_string.dimmed())
}
};
let version_str = format!("* {}{}", version, version_aliases);
if curr_version == Some(version) {
println!("{}", version_str.cyan());
} else {
println!("{}", version_str);
}
}
Ok(())
}
}
fn generate_aliases_hash(config: &FnmConfig) -> std::io::Result<HashMap<String, Vec<StoredAlias>>> {
let mut aliases = list_aliases(&config)?;
let mut hashmap: HashMap<String, Vec<StoredAlias>> = HashMap::with_capacity(aliases.len());
for alias in aliases.drain(..) {
if let Some(value) = hashmap.get_mut(alias.s_ver()) {
value.push(alias);
} else {
hashmap.insert(alias.s_ver().into(), vec![alias]);
}
}
Ok(hashmap)
}
#[derive(Debug, Snafu)]
pub enum Error {
#[snafu(display("Can't list locally installed versions: {}", source))]
CantListLocallyInstalledVersion {
source: crate::installed_versions::Error,
},
#[snafu(display("Can't read aliases: {}", source))]
CantReadAliases { source: std::io::Error },
}