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uucore: coreopts alignment, spacing, and optional usage

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This commit is contained in:
nathanross 2016-08-11 23:20:39 -04:00
parent 2e41535d69
commit f2dc230d0e
1 changed files with 23 additions and 11 deletions
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34
src/uucore/coreopts.rs
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@ -6,7 +6,8 @@ pub struct HelpText<'a> {
pub version : &'a str,
pub syntax : &'a str,
pub summary : &'a str,
pub long_help : &'a str
pub long_help : &'a str,
pub display_usage : bool
}
pub struct CoreOptions<'a> {
@ -43,21 +44,21 @@ impl<'a> CoreOptions<'a> {
crash!(1, "{}", f);
}
}.unwrap();
if matches.opt_present("help") {
if matches.opt_present("help") {
let usage_str = if self.help_text.display_usage {
format!("\n {}\n\n Reference\n",
self.options.usage(self.help_text.summary)
).replace("Options:", " Options:")
} else { String::new() };
print!("
{0} {1}
{0} {2}
{3}
Reference
{4}
",
self.help_text.name, self.help_text.version, self.help_text.syntax, self.options.usage(self.help_text.summary), self.help_text.long_help);
{3}{4}
", self.help_text.name, self.help_text.version, self.help_text.syntax, usage_str, self.help_text.long_help);
exit!(0);
} else if matches.opt_present("version") {
print!("{} {}", self.help_text.name, self.help_text.version);
println!("{} {}", self.help_text.name, self.help_text.version);
exit!(0);
}
matches
@ -72,7 +73,18 @@ macro_rules! new_coreopts {
version: env!("CARGO_PKG_VERSION"),
syntax: $syntax,
summary: $summary,
long_help: $long_help
long_help: $long_help,
display_usage: true
})
);
($syntax: expr, $summary: expr, $long_help: expr, $display_usage: expr) => (
uucore::coreopts::CoreOptions::new(uucore::coreopts::HelpText {
name: executable!(),
version: env!("CARGO_PKG_VERSION"),
syntax: $syntax,
summary: $summary,
long_help: $long_help,
display_usage: $display_usage
})
);
}