Struct clap::builder::NonEmptyStringValueParser
source · #[non_exhaustive]pub struct NonEmptyStringValueParser {}
Expand description
Parse non-empty string values
See also:
Example
Usage:
let mut cmd = clap::Command::new("raw")
.arg(
clap::Arg::new("append")
.value_parser(clap::builder::NonEmptyStringValueParser::new())
.required(true)
);
let m = cmd.try_get_matches_from_mut(["cmd", "true"]).unwrap();
let port: &String = m.get_one("append")
.expect("required");
assert_eq!(port, "true");
Semantics:
let value_parser = clap::builder::NonEmptyStringValueParser::new();
assert_eq!(value_parser.parse_ref(&cmd, arg, OsStr::new("random")).unwrap(), "random");
assert!(value_parser.parse_ref(&cmd, arg, OsStr::new("")).is_err());
Implementations§
Trait Implementations§
source§impl Clone for NonEmptyStringValueParser
impl Clone for NonEmptyStringValueParser
source§fn clone(&self) -> NonEmptyStringValueParser
fn clone(&self) -> NonEmptyStringValueParser
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for NonEmptyStringValueParser
impl Debug for NonEmptyStringValueParser
source§impl Default for NonEmptyStringValueParser
impl Default for NonEmptyStringValueParser
source§impl TypedValueParser for NonEmptyStringValueParser
impl TypedValueParser for NonEmptyStringValueParser
source§fn parse_ref(
&self,
cmd: &Command<'_>,
arg: Option<&Arg<'_>>,
value: &OsStr
) -> Result<Self::Value, Error>
fn parse_ref(
&self,
cmd: &Command<'_>,
arg: Option<&Arg<'_>>,
value: &OsStr
) -> Result<Self::Value, Error>
Parse the argument value Read more
source§fn parse(
&self,
cmd: &Command<'_>,
arg: Option<&Arg<'_>>,
value: OsString
) -> Result<Self::Value, Error>
fn parse(
&self,
cmd: &Command<'_>,
arg: Option<&Arg<'_>>,
value: OsString
) -> Result<Self::Value, Error>
Parse the argument value Read more
source§fn possible_values(
&self
) -> Option<Box<dyn Iterator<Item = PossibleValue<'static>> + '_>>
fn possible_values(
&self
) -> Option<Box<dyn Iterator<Item = PossibleValue<'static>> + '_>>
Reflect on enumerated value properties Read more