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Move help text and required flag to with chain, make help text optional

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a dinosaur
2025-11-02 01:16:17 +11:00
parent 0d9b86c767
commit 912d282d12
4 changed files with 42 additions and 41 deletions
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10
examples/bin2h.rs
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@@ -203,11 +203,11 @@ pub fn main() -> ExitCode {
// Read & parse arguments from the command line, store results into the above structure
enum Arg { Out, Bin, Txt, Whitespace, Help }
const OPTIONS: Opts<Arg> = Opts::new(&[
Opt::help_flag(Arg::Help, &["--help", "-h"], "Show this help message and exit"),
Opt::positional_required(Arg::Out, "out", "Path to generated header file"),
Opt::value(Arg::Bin, &["--bin", "-b"], "data.bin", "Add a binary file"),
Opt::value(Arg::Txt, &["--txt", "-t"], "text.txt", "Add a text file"),
Opt::value(Arg::Whitespace, &["--whitespace"], "\" \"", "Emitted indentation (Default: \"\\t\")"),
Opt::help_flag(Arg::Help, &["--help", "-h"]).help_text("Show this help message and exit"),
Opt::positional(Arg::Out, "out").help_text("Path to generated header file").required(),
Opt::value(Arg::Bin, &["--bin", "-b"], "data.bin").help_text("Add a binary file"),
Opt::value(Arg::Txt, &["--txt", "-t"], "text.txt").help_text("Add a text file"),
Opt::value(Arg::Whitespace, &["--whitespace"], "\" \"").help_text("Emitted indentation (Default: \"\\t\")"),
]);
match OPTIONS.parse_easy(|program_name, id, _opt, _name, arg| {
match id {

8
examples/btreemap.rs
View File

@@ -8,10 +8,10 @@ use std::process::ExitCode;
fn main() -> ExitCode {
const OPTIONS: Opts<&'static str> = Opts::new(&[
Opt::help_flag("help", &["--help"], "Show this help"),
Opt::positional("positional", "positional", "Positional argument"),
Opt::value("value", &["-v", "--value"], "string", "Value option"),
Opt::flag("flag", &["-f", "--flag"], "Flag option"),
Opt::help_flag("help", &["--help"]).help_text("Show this help"),
Opt::positional("positional", "positional").help_text("Positional argument"),
Opt::value("value", &["-v", "--value"], "string").help_text("Value option"),
Opt::flag("flag", &["-f", "--flag"]).help_text("Flag option"),
]);
let map = match OPTIONS.parse_map_easy() {