matthiasbeyer/imag
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Add subcommand "help"

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This commit is contained in:
Matthias Beyer 2018-02-07 00:24:31 +01:00
parent edd5925f88
commit c17b256dfd
1 changed files with 18 additions and 1 deletions
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19
bin/core/imag/src/main.rs
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@ -121,7 +121,7 @@ fn main() {
let about = "imag - the PIM suite for the commandline";
let commands = get_commands();
let helptext = help_text(commands.clone());
let app = Runtime::get_default_cli_builder(appname, version, about)
let mut app = Runtime::get_default_cli_builder(appname, version, about)
.settings(&[AppSettings::AllowExternalSubcommands, AppSettings::ArgRequiredElseHelp])
.arg(Arg::with_name("version")
.long("version")
@ -137,6 +137,23 @@ fn main() {
.help("Get the versions of the imag commands"))
.subcommand(SubCommand::with_name("help").help("Show help"))
.after_help(helptext.as_str());
let long_help = {
let mut v = vec![];
if let Err(e) = app.write_long_help(&mut v) {
eprintln!("Error: {:?}", e);
exit(1);
}
String::from_utf8(v).unwrap_or_else(|_| { eprintln!("UTF8 Error"); exit(1) })
};
{
let print_help = app.clone().get_matches().subcommand_name().map(|h| h == "help").unwrap_or(false);
if print_help {
println!("{}", long_help);
exit(0)
}
}
let rt = Runtime::new(app)
.unwrap_or_else(|e| {
println!("Runtime couldn't be setup. Exiting");