Enum termcolor::ColorChoice

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pub enum ColorChoice {
    Always,
    AlwaysAnsi,
    Auto,
    Never,
}
Expand description

ColorChoice represents the color preferences of an end user.

The Default implementation for this type will select Auto, which tries to do the right thing based on the current environment.

The FromStr implementation for this type converts a lowercase kebab-case string of the variant name to the corresponding variant. Any other string results in an error.

Variants§

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Always

Try very hard to emit colors. This includes emitting ANSI colors on Windows if the console API is unavailable.

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AlwaysAnsi

AlwaysAnsi is like Always, except it never tries to use anything other than emitting ANSI color codes.

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Auto

Try to use colors, but don’t force the issue. If the console isn’t available on Windows, or if TERM=dumb, or if NO_COLOR is defined, for example, then don’t use colors.

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Never

Never emit colors.

Implementations§

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impl ColorChoice

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pub(crate) fn should_attempt_color(&self) -> bool

Returns true if we should attempt to write colored output.

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pub(crate) fn env_allows_color(&self) -> bool

Trait Implementations§

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impl Clone for ColorChoice

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fn clone(&self) -> ColorChoice

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ColorChoice

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for ColorChoice

The default is Auto.

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fn default() -> ColorChoice

Returns the “default value” for a type. Read more
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impl FromStr for ColorChoice

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type Err = ColorChoiceParseError

The associated error which can be returned from parsing.
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fn from_str(s: &str) -> Result<ColorChoice, ColorChoiceParseError>

Parses a string s to return a value of this type. Read more
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impl PartialEq for ColorChoice

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fn eq(&self, other: &ColorChoice) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for ColorChoice

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impl Eq for ColorChoice

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impl StructuralPartialEq for ColorChoice

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.