use clap;
use clap::{AppSettings, Arg, ArgMatches};
use cargo::{self, CliResult, Config};
use super::commands;
use super::list_commands;
use crate::command_prelude::*;
pub fn main(config: &mut Config) -> CliResult {
let args = match cli().get_matches_safe() {
Ok(args) => args,
Err(e) => {
if e.kind == clap::ErrorKind::UnrecognizedSubcommand {
let cmd = &e.info.as_ref().unwrap()[0].to_owned();
return super::execute_external_subcommand(config, cmd, &[cmd, "--help"])
.map_err(|_| e.into());
} else {
return Err(e)?;
}
}
};
if args.value_of("unstable-features") == Some("help") {
println!(
"
Available unstable (nightly-only) flags:
-Z avoid-dev-deps -- Avoid installing dev-dependencies if possible
-Z minimal-versions -- Install minimal dependency versions instead of maximum
-Z no-index-update -- Do not update the registry, avoids a network request for benchmarking
-Z offline -- Offline mode that does not perform network requests
-Z unstable-options -- Allow the usage of unstable options such as --registry
-Z config-profile -- Read profiles from .cargo/config files
Run with 'cargo -Z [FLAG] [SUBCOMMAND]'"
);
return Ok(());
}
let is_verbose = args.occurrences_of("verbose") > 0;
if args.is_present("version") {
let version = get_version_string(is_verbose);
print!("{}", version);
return Ok(());
}
if let Some(ref code) = args.value_of("explain") {
let mut procss = config.rustc(None)?.process();
procss.arg("--explain").arg(code).exec()?;
return Ok(());
}
if args.is_present("list") {
println!("Installed Commands:");
for command in list_commands(config) {
match command {
CommandInfo::BuiltIn { name, about } => {
let summary = about.unwrap_or_default();
let summary = summary.lines().next().unwrap_or(&summary); println!(" {:<20} {}", name, summary)
}
CommandInfo::External { name, path } => {
if is_verbose {
println!(" {:<20} {}", name, path.display())
} else {
println!(" {}", name)
}
}
}
}
return Ok(());
}
let args = expand_aliases(config, args)?;
execute_subcommand(config, &args)
}
pub fn get_version_string(is_verbose: bool) -> String {
let version = cargo::version();
let mut version_string = version.to_string();
version_string.push_str("\n");
if is_verbose {
version_string.push_str(&format!(
"release: {}.{}.{}\n",
version.major, version.minor, version.patch
));
if let Some(ref cfg) = version.cfg_info {
if let Some(ref ci) = cfg.commit_info {
version_string.push_str(&format!("commit-hash: {}\n", ci.commit_hash));
version_string.push_str(&format!("commit-date: {}\n", ci.commit_date));
}
}
}
version_string
}
fn expand_aliases(
config: &mut Config,
args: ArgMatches<'static>,
) -> Result<ArgMatches<'static>, CliError> {
if let (cmd, Some(args)) = args.subcommand() {
match (
commands::builtin_exec(cmd),
super::aliased_command(config, cmd)?,
) {
(Some(_), Some(_)) => {
config.shell().warn(format!(
"user-defined alias `{}` is ignored, because it is shadowed by a built-in command",
cmd,
))?;
}
(_, Some(mut alias)) => {
alias.extend(
args.values_of("")
.unwrap_or_default()
.map(|s| s.to_string()),
);
let args = cli()
.setting(AppSettings::NoBinaryName)
.get_matches_from_safe(alias)?;
return expand_aliases(config, args);
}
(_, None) => {}
}
};
Ok(args)
}
fn execute_subcommand(config: &mut Config, args: &ArgMatches<'_>) -> CliResult {
let (cmd, subcommand_args) = match args.subcommand() {
(cmd, Some(args)) => (cmd, args),
_ => {
cli().print_help()?;
return Ok(());
}
};
let arg_target_dir = &subcommand_args.value_of_path("target-dir", config);
config.configure(
args.occurrences_of("verbose") as u32,
if args.is_present("quiet") {
Some(true)
} else {
None
},
&args.value_of("color").map(|s| s.to_string()),
args.is_present("frozen"),
args.is_present("locked"),
arg_target_dir,
&args
.values_of_lossy("unstable-features")
.unwrap_or_default(),
)?;
if let Some(exec) = commands::builtin_exec(cmd) {
return exec(config, subcommand_args);
}
let mut ext_args: Vec<&str> = vec![cmd];
ext_args.extend(subcommand_args.values_of("").unwrap_or_default());
super::execute_external_subcommand(config, cmd, &ext_args)
}
fn cli() -> App {
App::new("cargo")
.settings(&[
AppSettings::UnifiedHelpMessage,
AppSettings::DeriveDisplayOrder,
AppSettings::VersionlessSubcommands,
AppSettings::AllowExternalSubcommands,
])
.about("")
.template(
"\
Rust's package manager
USAGE:
{usage}
OPTIONS:
{unified}
Some common cargo commands are (see all commands with --list):
build Compile the current package
check Analyze the current package and report errors, but don't build object files
clean Remove the target directory
doc Build this package's and its dependencies' documentation
new Create a new cargo package
init Create a new cargo package in an existing directory
run Build and execute src/main.rs
test Run the tests
bench Run the benchmarks
update Update dependencies listed in Cargo.lock
search Search registry for crates
publish Package and upload this package to the registry
install Install a Rust binary. Default location is $HOME/.cargo/bin
uninstall Uninstall a Rust binary
See 'cargo help <command>' for more information on a specific command.\n",
)
.arg(opt("version", "Print version info and exit").short("V"))
.arg(opt("list", "List installed commands"))
.arg(opt("explain", "Run `rustc --explain CODE`").value_name("CODE"))
.arg(
opt(
"verbose",
"Use verbose output (-vv very verbose/build.rs output)",
)
.short("v")
.multiple(true)
.global(true),
)
.arg(
opt("quiet", "No output printed to stdout")
.short("q")
.global(true),
)
.arg(
opt("color", "Coloring: auto, always, never")
.value_name("WHEN")
.global(true),
)
.arg(opt("frozen", "Require Cargo.lock and cache are up to date").global(true))
.arg(opt("locked", "Require Cargo.lock is up to date").global(true))
.arg(
Arg::with_name("unstable-features")
.help("Unstable (nightly-only) flags to Cargo, see 'cargo -Z help' for details")
.short("Z")
.value_name("FLAG")
.multiple(true)
.number_of_values(1)
.global(true),
)
.subcommands(commands::builtin())
}