Struct ttf_parser::parser::Stream

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pub struct Stream<'a> {
    data: &'a [u8],
    offset: usize,
}
Expand description

A streaming binary parser.

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§data: &'a [u8]§offset: usize

Implementations§

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impl<'a> Stream<'a>

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pub fn new(data: &'a [u8]) -> Self

Creates a new Stream parser.

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pub fn new_at(data: &'a [u8], offset: usize) -> Option<Self>

Creates a new Stream parser at offset.

Returns None when offset is out of bounds.

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pub fn at_end(&self) -> bool

Checks that stream reached the end of the data.

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pub fn jump_to_end(&mut self)

Jumps to the end of the stream.

Useful to indicate that we parsed all the data.

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pub fn offset(&self) -> usize

Returns the current offset.

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pub fn tail(&self) -> Option<&'a [u8]>

Returns the trailing data.

Returns None when Stream is reached the end.

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pub fn skip<T: FromData>(&mut self)

Advances by FromData::SIZE.

Doesn’t check bounds.

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pub fn advance(&mut self, len: usize)

Advances by the specified len.

Doesn’t check bounds.

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pub fn advance_checked(&mut self, len: usize) -> Option<()>

Advances by the specified len and checks for bounds.

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pub fn read<T: FromData>(&mut self) -> Option<T>

Parses the type from the steam.

Returns None when there is not enough data left in the stream or the type parsing failed.

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pub fn read_at<T: FromData>(data: &[u8], offset: usize) -> Option<T>

Parses the type from the steam at offset.

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pub fn read_bytes(&mut self, len: usize) -> Option<&'a [u8]>

Reads N bytes from the stream.

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pub fn read_array16<T: FromData>( &mut self, count: u16, ) -> Option<LazyArray16<'a, T>>

Reads the next count types as a slice.

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pub fn read_array32<T: FromData>( &mut self, count: u32, ) -> Option<LazyArray32<'a, T>>

Reads the next count types as a slice.

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pub fn read_at_offset16(&mut self, data: &'a [u8]) -> Option<&'a [u8]>

Trait Implementations§

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impl<'a> Clone for Stream<'a>

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fn clone(&self) -> Stream<'a>

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<'a> Debug for Stream<'a>

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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<'a> Default for Stream<'a>

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fn default() -> Stream<'a>

Returns the “default value” for a type. Read more
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impl<'a> StreamExt<'a> for Stream<'a>

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fn parse_at_offset16<T: FromSlice<'a>>(&mut self, data: &'a [u8]) -> Option<T>

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impl<'a> StreamExt<'a> for Stream<'a>

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fn read_at_offset32(&mut self, data: &'a [u8]) -> Option<&'a [u8]>

Auto Trait Implementations§

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impl<'a> Freeze for Stream<'a>

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impl<'a> RefUnwindSafe for Stream<'a>

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impl<'a> Send for Stream<'a>

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impl<'a> Sync for Stream<'a>

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impl<'a> Unpin for Stream<'a>

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impl<'a> UnwindSafe for Stream<'a>

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> 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.