Struct UnicodeBuffer 

pub struct UnicodeBuffer(/* private fields */);

A buffer that contains an input string ready for shaping.

Implementations

impl UnicodeBuffer

pub fn new() -> UnicodeBuffer

Create a new UnicodeBuffer.

pub fn len(&self) -> usize

Returns the length of the data of the buffer.

This corresponds to the number of unicode codepoints contained in the buffer.

pub fn reserve(&mut self, size: usize) -> bool

Ensures that the buffer can hold at least size codepoints.

pub fn is_empty(&self) -> bool

Returns true if the buffer contains no elements.

pub fn push_str(&mut self, str: &str)

Pushes a string to a buffer.

pub fn set_pre_context(&mut self, str: &str)

Sets the pre-context for this buffer.

pub fn set_post_context(&mut self, str: &str)

Sets the post-context for this buffer.

pub fn add(&mut self, codepoint: char, cluster: u32)

Appends a character to a buffer with the given cluster value.

pub fn set_direction(&mut self, direction: Direction)

Set the text direction of the Buffer’s contents.

pub fn direction(&self) -> Direction

Returns the Buffer’s text direction.

pub fn set_script(&mut self, script: Script)

Set the script from an ISO15924 tag.

pub fn script(&self) -> Script

Get the ISO15924 script tag.

pub fn set_language(&mut self, lang: Language)

Set the buffer language.

pub fn set_not_found_variation_selector_glyph(&mut self, glyph: u32)

Set the glyph value to replace not-found variation-selector characters with.

pub fn language(&self) -> Option<Language>

Get the buffer language.

pub fn guess_segment_properties(&mut self)

Guess the segment properties (direction, language, script) for the current buffer.

pub fn set_flags(&mut self, flags: BufferFlags)

Set the flags for this buffer.

pub fn flags(&self) -> BufferFlags

Get the flags for this buffer.

pub fn set_cluster_level(&mut self, cluster_level: BufferClusterLevel)

Set the cluster level of the buffer.

pub fn cluster_level(&self) -> BufferClusterLevel

Retrieve the cluster level of the buffer.

pub fn reset_clusters(&mut self)

Resets clusters.

pub fn clear(&mut self)

Clear the contents of the buffer.

Trait Implementations

impl Debug for UnicodeBuffer

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

Formats the value using the given formatter.

impl Default for UnicodeBuffer

fn default() -> UnicodeBuffer

Returns the “default value” for a type.