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rustup_mode.rs
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rustup_mode.rs
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use crate::common;
use crate::errors::*;
use crate::help::*;
use crate::self_update;
use crate::term2;
use crate::term2::Terminal;
use clap::{App, AppSettings, Arg, ArgGroup, ArgMatches, Shell, SubCommand};
use rustup::dist::dist::{PartialTargetTriple, PartialToolchainDesc, TargetTriple};
use rustup::dist::manifest::Component;
use rustup::utils::utils::{self, ExitCode};
use rustup::{command, Cfg, Toolchain};
use std::error::Error;
use std::fmt;
use std::io::Write;
use std::iter;
use std::path::{Path, PathBuf};
use std::process::{self, Command};
use std::str::FromStr;
fn handle_epipe(res: Result<()>) -> Result<()> {
match res {
Err(Error(ErrorKind::Io(ref err), _)) if err.kind() == std::io::ErrorKind::BrokenPipe => {
Ok(())
}
res => res,
}
}
pub fn main() -> Result<()> {
crate::self_update::cleanup_self_updater()?;
let matches = cli().get_matches();
let verbose = matches.is_present("verbose");
let cfg = &common::set_globals(verbose)?;
if maybe_upgrade_data(cfg, &matches)? {
return Ok(());
}
cfg.check_metadata_version()?;
match matches.subcommand() {
("dump-testament", _) => common::dump_testament(),
("show", Some(c)) => match c.subcommand() {
("active-toolchain", Some(_)) => handle_epipe(show_active_toolchain(cfg))?,
(_, _) => handle_epipe(show(cfg))?,
},
("install", Some(m)) => update(cfg, m)?,
("update", Some(m)) => update(cfg, m)?,
("uninstall", Some(m)) => toolchain_remove(cfg, m)?,
("default", Some(m)) => default_(cfg, m)?,
("toolchain", Some(c)) => match c.subcommand() {
("install", Some(m)) => update(cfg, m)?,
("list", Some(_)) => handle_epipe(common::list_toolchains(cfg))?,
("link", Some(m)) => toolchain_link(cfg, m)?,
("uninstall", Some(m)) => toolchain_remove(cfg, m)?,
(_, _) => unreachable!(),
},
("target", Some(c)) => match c.subcommand() {
("list", Some(m)) => handle_epipe(target_list(cfg, m))?,
("add", Some(m)) => target_add(cfg, m)?,
("remove", Some(m)) => target_remove(cfg, m)?,
(_, _) => unreachable!(),
},
("component", Some(c)) => match c.subcommand() {
("list", Some(m)) => handle_epipe(component_list(cfg, m))?,
("add", Some(m)) => component_add(cfg, m)?,
("remove", Some(m)) => component_remove(cfg, m)?,
(_, _) => unreachable!(),
},
("override", Some(c)) => match c.subcommand() {
("list", Some(_)) => handle_epipe(common::list_overrides(cfg))?,
("set", Some(m)) => override_add(cfg, m)?,
("unset", Some(m)) => override_remove(cfg, m)?,
(_, _) => unreachable!(),
},
("run", Some(m)) => run(cfg, m)?,
("which", Some(m)) => which(cfg, m)?,
("doc", Some(m)) => doc(cfg, m)?,
("man", Some(m)) => man(cfg, m)?,
("self", Some(c)) => match c.subcommand() {
("update", Some(_)) => self_update::update()?,
("uninstall", Some(m)) => self_uninstall(m)?,
(_, _) => unreachable!(),
},
("set", Some(c)) => match c.subcommand() {
("default-host", Some(m)) => set_default_host_triple(&cfg, m)?,
(_, _) => unreachable!(),
},
("completions", Some(c)) => {
if let Some(shell) = c.value_of("shell") {
output_completion_script(
shell.parse::<Shell>().unwrap(),
c.value_of("command")
.and_then(|cmd| cmd.parse::<CompletionCommand>().ok())
.unwrap_or(CompletionCommand::Rustup),
)?;
}
}
(_, _) => unreachable!(),
}
Ok(())
}
pub fn cli() -> App<'static, 'static> {
let mut app = App::new("rustup")
.version(common::version())
.about("The Rust toolchain installer")
.after_help(RUSTUP_HELP)
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.arg(
Arg::with_name("verbose")
.help("Enable verbose output")
.short("v")
.long("verbose"),
)
.subcommand(
SubCommand::with_name("dump-testament")
.about("Dump information about the build")
.setting(AppSettings::Hidden) // Not for users, only CI
)
.subcommand(
SubCommand::with_name("show")
.about("Show the active and installed toolchains")
.after_help(SHOW_HELP)
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.subcommand(
SubCommand::with_name("active-toolchain")
.about("Show the active toolchain")
.after_help(SHOW_ACTIVE_TOOLCHAIN_HELP),
),
)
.subcommand(
SubCommand::with_name("install")
.about("Update Rust toolchains")
.after_help(INSTALL_HELP)
.setting(AppSettings::Hidden) // synonym for 'toolchain install'
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true)
.multiple(true),
)
.arg(
Arg::with_name("no-self-update")
.help("Don't perform self-update when running the `rustup install` command")
.long("no-self-update")
.takes_value(false)
)
.arg(
Arg::with_name("force")
.help("Force an update, even if some components are missing")
.long("force")
.takes_value(false),
),
)
.subcommand(
SubCommand::with_name("uninstall")
.about("Uninstall Rust toolchains")
.setting(AppSettings::Hidden) // synonym for 'toolchain uninstall'
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true)
.multiple(true),
),
)
.subcommand(
SubCommand::with_name("update")
.about("Update Rust toolchains and rustup")
.after_help(UPDATE_HELP)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(false)
.multiple(true),
)
.arg(
Arg::with_name("no-self-update")
.help("Don't perform self update when running the `rustup update` command")
.long("no-self-update")
.takes_value(false)
)
.arg(
Arg::with_name("force")
.help("Force an update, even if some components are missing")
.long("force")
.takes_value(false),
),
)
.subcommand(
SubCommand::with_name("default")
.about("Set the default toolchain")
.after_help(DEFAULT_HELP)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(false),
),
)
.subcommand(
SubCommand::with_name("toolchain")
.about("Modify or query the installed toolchains")
.after_help(TOOLCHAIN_HELP)
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(SubCommand::with_name("list").about("List installed toolchains"))
.subcommand(
SubCommand::with_name("install")
.about("Install or update a given toolchain")
.aliases(&["update", "add"])
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true)
.multiple(true),
)
.arg(
Arg::with_name("no-self-update")
.help("Don't perform self update when running the `rustup toolchain install` command")
.long("no-self-update")
.takes_value(false)
),
)
.subcommand(
SubCommand::with_name("uninstall")
.about("Uninstall a toolchain")
.alias("remove")
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true)
.multiple(true),
),
)
.subcommand(
SubCommand::with_name("link")
.about("Create a custom toolchain by symlinking to a directory")
.after_help(TOOLCHAIN_LINK_HELP)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true),
)
.arg(Arg::with_name("path").required(true)),
),
)
.subcommand(
SubCommand::with_name("target")
.about("Modify a toolchain's supported targets")
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("list")
.about("List installed and available targets")
.arg(
Arg::with_name("installed")
.long("--installed")
.help("List only installed targets"),
)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
)
.subcommand(
SubCommand::with_name("add")
.about("Add a target to a Rust toolchain")
.alias("install")
.arg(
Arg::with_name("target")
.required(true)
.multiple(true)
.help(
"List of targets to install; \
\"all\" installs all available targets"
)
)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
)
.subcommand(
SubCommand::with_name("remove")
.about("Remove a target from a Rust toolchain")
.alias("uninstall")
.arg(Arg::with_name("target").required(true).multiple(true))
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
),
)
.subcommand(
SubCommand::with_name("component")
.about("Modify a toolchain's installed components")
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("list")
.about("List installed and available components")
.arg(
Arg::with_name("installed")
.long("--installed")
.help("List only installed components"),
)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
)
.subcommand(
SubCommand::with_name("add")
.about("Add a component to a Rust toolchain")
.arg(Arg::with_name("component").required(true).multiple(true))
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
)
.arg(Arg::with_name("target").long("target").takes_value(true)),
)
.subcommand(
SubCommand::with_name("remove")
.about("Remove a component from a Rust toolchain")
.arg(Arg::with_name("component").required(true).multiple(true))
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
)
.arg(Arg::with_name("target").long("target").takes_value(true)),
),
)
.subcommand(
SubCommand::with_name("override")
.about("Modify directory toolchain overrides")
.after_help(OVERRIDE_HELP)
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("list").about("List directory toolchain overrides"),
)
.subcommand(
SubCommand::with_name("set")
.about("Set the override toolchain for a directory")
.alias("add")
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true),
)
.arg(
Arg::with_name("path")
.long("path")
.takes_value(true)
.help("Path to the directory"),
),
)
.subcommand(
SubCommand::with_name("unset")
.about("Remove the override toolchain for a directory")
.after_help(OVERRIDE_UNSET_HELP)
.alias("remove")
.arg(
Arg::with_name("path")
.long("path")
.takes_value(true)
.help("Path to the directory"),
)
.arg(
Arg::with_name("nonexistent")
.long("nonexistent")
.takes_value(false)
.help("Remove override toolchain for all nonexistent directories"),
),
),
)
.subcommand(
SubCommand::with_name("run")
.about("Run a command with an environment configured for a given toolchain")
.after_help(RUN_HELP)
.setting(AppSettings::TrailingVarArg)
.arg(
Arg::with_name("install")
.help("Install the requested toolchain if needed")
.long("install"),
)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.required(true),
)
.arg(
Arg::with_name("command")
.required(true)
.multiple(true)
.use_delimiter(false),
),
)
.subcommand(
SubCommand::with_name("which")
.about("Display which binary will be run for a given command")
.arg(Arg::with_name("command").required(true)),
)
.subcommand(
SubCommand::with_name("doc")
.alias("docs")
.about("Open the documentation for the current toolchain")
.after_help(DOC_HELP)
.arg(
Arg::with_name("path")
.long("path")
.help("Only print the path to the documentation"),
)
.args(
&DOCS_DATA
.iter()
.map(|(name, help_msg, _)| Arg::with_name(name).long(name).help(help_msg))
.collect::<Vec<_>>(),
)
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
)
.group(
ArgGroup::with_name("page").args(
&DOCS_DATA
.iter()
.map(|(name, _, _)| *name)
.collect::<Vec<_>>(),
),
),
);
if cfg!(not(target_os = "windows")) {
app = app.subcommand(
SubCommand::with_name("man")
.about("View the man page for a given command")
.arg(Arg::with_name("command").required(true))
.arg(
Arg::with_name("toolchain")
.help(TOOLCHAIN_ARG_HELP)
.long("toolchain")
.takes_value(true),
),
);
}
app = app
.subcommand(
SubCommand::with_name("self")
.about("Modify the rustup installation")
.setting(AppSettings::VersionlessSubcommands)
.setting(AppSettings::DeriveDisplayOrder)
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("update").about("Download and install updates to rustup"),
)
.subcommand(
SubCommand::with_name("uninstall")
.about("Uninstall rustup.")
.arg(Arg::with_name("no-prompt").short("y")),
)
.subcommand(
SubCommand::with_name("upgrade-data")
.about("Upgrade the internal data format."),
),
)
.subcommand(
SubCommand::with_name("set")
.about("Alter rustup settings")
.setting(AppSettings::SubcommandRequiredElseHelp)
.subcommand(
SubCommand::with_name("default-host")
.about("The triple used to identify toolchains when not specified")
.arg(Arg::with_name("host_triple").required(true)),
),
);
// Clap provides no good way to say that help should be printed in all
// cases where an argument without a default is not provided. The following
// creates lists out all the conditions where the "shell" argument are
// provided and give the default of "rustup". This way if "shell" is not
// provided then the help will still be printed.
let completion_defaults = Shell::variants()
.iter()
.map(|&shell| ("shell", Some(shell), "rustup"))
.collect::<Vec<_>>();
app.subcommand(
SubCommand::with_name("completions")
.about("Generate completion scripts for your shell")
.after_help(COMPLETIONS_HELP)
.setting(AppSettings::ArgRequiredElseHelp)
.arg(Arg::with_name("shell").possible_values(&Shell::variants()))
.arg(
Arg::with_name("command")
.possible_values(&CompletionCommand::variants())
.default_value_ifs(&completion_defaults[..]),
),
)
}
fn maybe_upgrade_data(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<bool> {
match m.subcommand() {
("self", Some(c)) => match c.subcommand() {
("upgrade-data", Some(_)) => {
cfg.upgrade_data()?;
Ok(true)
}
_ => Ok(false),
},
_ => Ok(false),
}
}
fn update_bare_triple_check(cfg: &Cfg, name: &str) -> Result<()> {
if let Some(triple) = PartialTargetTriple::new(name) {
warn!("(partial) target triple specified instead of toolchain name");
let installed_toolchains = cfg.list_toolchains()?;
let default = cfg.find_default()?;
let default_name = default.map(|t| t.name().to_string()).unwrap_or_default();
let mut candidates = vec![];
for t in installed_toolchains {
if t == default_name {
continue;
}
if let Ok(desc) = PartialToolchainDesc::from_str(&t) {
fn triple_comp_eq(given: &str, from_desc: Option<&String>) -> bool {
from_desc.map_or(false, |s| *s == *given)
}
let triple_matches = triple
.arch
.as_ref()
.map_or(true, |s| triple_comp_eq(s, desc.target.arch.as_ref()))
&& triple
.os
.as_ref()
.map_or(true, |s| triple_comp_eq(s, desc.target.os.as_ref()))
&& triple
.env
.as_ref()
.map_or(true, |s| triple_comp_eq(s, desc.target.env.as_ref()));
if triple_matches {
candidates.push(t);
}
}
}
match candidates.len() {
0 => err!("no candidate toolchains found"),
1 => println!("\nyou may use the following toolchain: {}\n", candidates[0]),
_ => {
println!("\nyou may use one of the following toolchains:");
for n in &candidates {
println!("{}", n);
}
println!();
}
}
return Err(ErrorKind::ToolchainNotInstalled(name.to_string()).into());
}
Ok(())
}
fn default_bare_triple_check(cfg: &Cfg, name: &str) -> Result<()> {
if let Some(triple) = PartialTargetTriple::new(name) {
warn!("(partial) target triple specified instead of toolchain name");
let default = cfg.find_default()?;
let default_name = default.map(|t| t.name().to_string()).unwrap_or_default();
if let Ok(mut desc) = PartialToolchainDesc::from_str(&default_name) {
desc.target = triple;
let maybe_toolchain = format!("{}", desc);
let toolchain = cfg.get_toolchain(maybe_toolchain.as_ref(), false)?;
if toolchain.name() == default_name {
warn!(
"(partial) triple '{}' resolves to a toolchain that is already default",
name
);
} else {
println!(
"\nyou may use the following toolchain: {}\n",
toolchain.name()
);
}
return Err(ErrorKind::ToolchainNotInstalled(name.to_string()).into());
}
}
Ok(())
}
fn default_(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
if m.is_present("toolchain") {
let toolchain = m.value_of("toolchain").expect("");
default_bare_triple_check(cfg, toolchain)?;
let toolchain = cfg.get_toolchain(toolchain, false)?;
let status = if !toolchain.is_custom() {
Some(toolchain.install_from_dist_if_not_installed()?)
} else if !toolchain.exists() {
return Err(ErrorKind::ToolchainNotInstalled(toolchain.name().to_string()).into());
} else {
None
};
toolchain.make_default()?;
if let Some(status) = status {
println!();
common::show_channel_update(cfg, toolchain.name(), Ok(status))?;
}
let cwd = utils::current_dir()?;
if let Some((toolchain, reason)) = cfg.find_override(&cwd)? {
info!(
"note that the toolchain '{}' is currently in use ({})",
toolchain.name(),
reason
);
}
} else {
let default_toolchain: Result<String> = cfg
.get_default()?
.ok_or_else(|| "no default toolchain configured".into());
println!("{} (default)", default_toolchain?);
}
Ok(())
}
fn update(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
let self_update = !m.is_present("no-self-update") && !self_update::NEVER_SELF_UPDATE;
if let Some(names) = m.values_of("toolchain") {
for name in names {
update_bare_triple_check(cfg, name)?;
let toolchain = cfg.get_toolchain(name, false)?;
let status = if !toolchain.is_custom() {
Some(toolchain.install_from_dist(m.is_present("force"))?)
} else if !toolchain.exists() {
return Err(ErrorKind::InvalidToolchainName(toolchain.name().to_string()).into());
} else {
None
};
if let Some(status) = status {
println!();
common::show_channel_update(cfg, toolchain.name(), Ok(status))?;
}
if cfg.get_default()?.is_none() {
use rustup::UpdateStatus;
if let Some(UpdateStatus::Installed) = status {
toolchain.make_default()?;
}
}
}
if self_update {
common::self_update(|| Ok(()))?;
}
} else {
common::update_all_channels(cfg, self_update, m.is_present("force"))?;
}
Ok(())
}
fn run(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
let toolchain = m.value_of("toolchain").expect("");
let args = m.values_of("command").unwrap();
let args: Vec<_> = args.collect();
let cmd = cfg.create_command_for_toolchain(toolchain, m.is_present("install"), args[0])?;
let ExitCode(c) = command::run_command_for_dir(cmd, args[0], &args[1..])?;
process::exit(c)
}
fn which(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
let binary = m.value_of("command").expect("");
let binary_path = cfg
.which_binary(&utils::current_dir()?, binary)?
.expect("binary not found");
utils::assert_is_file(&binary_path)?;
println!("{}", binary_path.display());
Ok(())
}
fn show(cfg: &Cfg) -> Result<()> {
// Print host triple
{
let mut t = term2::stdout();
t.attr(term2::Attr::Bold)?;
write!(t, "Default host: ")?;
t.reset()?;
writeln!(t, "{}", cfg.get_default_host_triple()?)?;
writeln!(t)?;
}
let cwd = utils::current_dir()?;
let installed_toolchains = cfg.list_toolchains()?;
let active_toolchain = cfg.find_override_toolchain_or_default(&cwd);
// active_toolchain will carry the reason we don't have one in its detail.
let active_targets = if let Ok(ref at) = active_toolchain {
if let Some((ref t, _)) = *at {
match t.list_components() {
Ok(cs_vec) => cs_vec
.into_iter()
.filter(|c| c.component.short_name_in_manifest() == "rust-std")
.filter(|c| c.installed)
.collect(),
Err(_) => vec![],
}
} else {
vec![]
}
} else {
vec![]
};
let show_installed_toolchains = installed_toolchains.len() > 1;
let show_active_targets = active_targets.len() > 1;
let show_active_toolchain = true;
// Only need to display headers if we have multiple sections
let show_headers = [
show_installed_toolchains,
show_active_targets,
show_active_toolchain,
]
.iter()
.filter(|x| **x)
.count()
> 1;
if show_installed_toolchains {
let mut t = term2::stdout();
if show_headers {
print_header(&mut t, "installed toolchains")?;
}
let default_name: Result<String> = cfg
.get_default()?
.ok_or_else(|| "no default toolchain configured".into());
let default_name = default_name?;
for it in installed_toolchains {
if default_name == it {
writeln!(t, "{} (default)", it)?;
} else {
writeln!(t, "{}", it)?;
}
}
if show_headers {
writeln!(t)?
};
}
if show_active_targets {
let mut t = term2::stdout();
if show_headers {
print_header(&mut t, "installed targets for active toolchain")?;
}
for at in active_targets {
writeln!(
t,
"{}",
at.component
.target
.as_ref()
.expect("rust-std should have a target")
)?;
}
if show_headers {
writeln!(t)?;
};
}
if show_active_toolchain {
let mut t = term2::stdout();
if show_headers {
print_header(&mut t, "active toolchain")?;
}
match active_toolchain {
Ok(atc) => match atc {
Some((ref toolchain, Some(ref reason))) => {
writeln!(t, "{} ({})", toolchain.name(), reason)?;
writeln!(t, "{}", common::rustc_version(toolchain))?;
}
Some((ref toolchain, None)) => {
writeln!(t, "{} (default)", toolchain.name())?;
writeln!(t, "{}", common::rustc_version(toolchain))?;
}
None => {
writeln!(t, "no active toolchain")?;
}
},
Err(err) => {
if let Some(cause) = err.source() {
writeln!(t, "(error: {}, {})", err, cause)?;
} else {
writeln!(t, "(error: {})", err)?;
}
}
}
if show_headers {
writeln!(t)?
}
}
fn print_header(t: &mut term::StdoutTerminal, s: &str) -> Result<()> {
t.attr(term2::Attr::Bold)?;
writeln!(t, "{}", s)?;
writeln!(t, "{}", iter::repeat("-").take(s.len()).collect::<String>())?;
writeln!(t)?;
t.reset()?;
Ok(())
}
Ok(())
}
fn show_active_toolchain(cfg: &Cfg) -> Result<()> {
let cwd = utils::current_dir()?;
if let Some((toolchain, reason)) = cfg.find_override_toolchain_or_default(&cwd)? {
if reason.is_some() {
println!("{} ({})", toolchain.name(), reason.unwrap());
} else {
println!("{} (default)", toolchain.name());
}
}
Ok(())
}
fn target_list(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
let toolchain = explicit_or_dir_toolchain(cfg, m)?;
if m.is_present("installed") {
common::list_installed_targets(&toolchain)
} else {
common::list_targets(&toolchain)
}
}
fn target_add(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
let toolchain = explicit_or_dir_toolchain(cfg, m)?;
let mut targets: Vec<String> = m
.values_of("target")
.expect("")
.map(ToString::to_string)
.collect();
if targets.contains(&"all".to_string()) {
if targets.len() != 1 {
return Err(ErrorKind::TargetAllSpecifiedWithTargets(targets).into());
}
targets.clear();
for component in toolchain.list_components()? {
if component.component.short_name_in_manifest() == "rust-std"
&& component.available
&& !component.installed
{
let target = component
.component
.target
.as_ref()
.expect("rust-std should have a target");
targets.push(target.to_string());
}
}
}
for target in &targets {
let new_component = Component::new("rust-std".to_string(), Some(TargetTriple::new(target)));
toolchain.add_component(new_component)?;
}
Ok(())
}
fn target_remove(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
let toolchain = explicit_or_dir_toolchain(cfg, m)?;
for target in m.values_of("target").expect("") {
let new_component = Component::new("rust-std".to_string(), Some(TargetTriple::new(target)));
toolchain.remove_component(new_component)?;
}
Ok(())
}
fn component_list(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
let toolchain = explicit_or_dir_toolchain(cfg, m)?;
if m.is_present("installed") {
common::list_installed_components(&toolchain)
} else {
common::list_components(&toolchain)
}
}
fn component_add(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
let toolchain = explicit_or_dir_toolchain(cfg, m)?;
let target = m.value_of("target").map(TargetTriple::new).or_else(|| {
toolchain
.desc()
.as_ref()
.ok()
.map(|desc| desc.target.clone())
});
for component in m.values_of("component").expect("") {
let new_component = Component::new(component.to_string(), target.clone());
toolchain.add_component(new_component)?;
}
Ok(())
}
fn component_remove(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
let toolchain = explicit_or_dir_toolchain(cfg, m)?;
let target = m.value_of("target").map(TargetTriple::new).or_else(|| {
toolchain
.desc()
.as_ref()
.ok()
.map(|desc| desc.target.clone())
});
for component in m.values_of("component").expect("") {
let new_component = Component::new(component.to_string(), target.clone());
toolchain.remove_component(new_component)?;
}
Ok(())
}
fn explicit_or_dir_toolchain<'a>(cfg: &'a Cfg, m: &ArgMatches<'_>) -> Result<Toolchain<'a>> {
let toolchain = m.value_of("toolchain");
if let Some(toolchain) = toolchain {
let toolchain = cfg.get_toolchain(toolchain, false)?;
return Ok(toolchain);
}
let cwd = utils::current_dir()?;
let (toolchain, _) = cfg.toolchain_for_dir(&cwd)?;
Ok(toolchain)
}
fn toolchain_link(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
let toolchain = m.value_of("toolchain").expect("");
let path = m.value_of("path").expect("");
let toolchain = cfg.get_toolchain(toolchain, true)?;
toolchain
.install_from_dir(Path::new(path), true)
.map_err(std::convert::Into::into)
}
fn toolchain_remove(cfg: &Cfg, m: &ArgMatches<'_>) -> Result<()> {
for toolchain in m.values_of("toolchain").expect("") {
let toolchain = cfg.get_toolchain(toolchain, false)?;
toolchain.remove()?;
}
Ok(())
}