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c90a4eabae
In looking at other help output, I noticed that they use two spaces, in place of clap's 4, and it doesn't suffer from legibility. If it doesn't make the output worse, let's go ahead and make it as dense so we fit more content on the screen. This is a part of #4132
2 KiB
2 KiB
This requires enabling the [derive feature flag][crate::_features].
Help:
$ typed-derive --help
Usage: typed-derive[EXE] [OPTIONS]
Options:
-O <OPTIMIZATION> Implicitly using `std::str::FromStr`
-I <DIR> Allow invalid UTF-8 paths
--bind <BIND> Handle IP addresses
--sleep <SLEEP> Allow human-readable durations
-D <DEFINES> Hand-written parser for tuples
-h, --help Print help information
Optimization-level (number)
$ typed-derive -O 1
Args { optimization: Some(1), include: None, bind: None, sleep: None, defines: [] }
$ typed-derive -O plaid
? failed
error: Invalid value "plaid" for '-O <OPTIMIZATION>': invalid digit found in string
For more information try --help
Include (path)
$ typed-derive -I../hello
Args { optimization: None, include: Some("../hello"), bind: None, sleep: None, defines: [] }
IP Address
$ typed-derive --bind 192.0.0.1
Args { optimization: None, include: None, bind: Some(192.0.0.1), sleep: None, defines: [] }
$ typed-derive --bind localhost
? failed
error: Invalid value "localhost" for '--bind <BIND>': invalid IP address syntax
For more information try --help
Time
$ typed-derive --sleep 10s
Args { optimization: None, include: None, bind: None, sleep: Some(Duration(10s)), defines: [] }
$ typed-derive --sleep forever
? failed
error: Invalid value "forever" for '--sleep <SLEEP>': expected number at 0
For more information try --help
Defines (key-value pairs)
$ typed-derive -D Foo=10 -D Alice=30
Args { optimization: None, include: None, bind: None, sleep: None, defines: [("Foo", 10), ("Alice", 30)] }
$ typed-derive -D Foo
? failed
error: Invalid value "Foo" for '-D <DEFINES>': invalid KEY=value: no `=` found in `Foo`
For more information try --help
$ typed-derive -D Foo=Bar
? failed
error: Invalid value "Foo=Bar" for '-D <DEFINES>': invalid digit found in string
For more information try --help