[−][src]Function go_flag::parse_args_with_warnings
pub fn parse_args_with_warnings<'a, T, S: AsRef<OsStr>, F>(
args: &[S],
warnings: Option<&mut Vec<FlagWarning>>,
f: F
) -> Result<Vec<T>, FlagError> where
T: FlagValue,
F: FnOnce(&mut FlagSet<'a>),
Parses the given arguments into flags, recording warnings issued.
Flags are registered in the given closure.
Returns
Returns the list of positional arguments (remaining arguments).
Positional arguments can also be parsed. You'll typically need
Vec<String>
, Vec<OsString>
or Vec<PathBuf>
.
Errors
It returns Err
if the given arguments contains invalid flags.
Example
let mut warnings = Vec::new(); let mut force = false; let mut lines = 10_i32; let args = ["--f", "--", "foo"]; let args: Vec<String> = go_flag::parse_args_with_warnings(&args, Some(&mut warnings), |flags| { flags.add_flag("f", &mut force); flags.add_flag("lines", &mut lines); })?; assert_eq!(force, true); assert_eq!(lines, 10); assert_eq!(args, vec![String::from("foo")]); assert_eq!(warnings[0].to_string(), "short flag with double minuses: --f");