Struct Ifd 

pub struct Ifd { /* private fields */ }

A parsed Image File Directory — one node in the IFD chain (a TIFF page, or an EXIF/GPS/Interop sub-directory).

Fields are kept sorted in ascending tag order, as required on disk (TIFF 6.0 §2); the accessors preserve that invariant.

Implementations

impl Ifd

pub fn new() -> Ifd

Creates an empty directory.

pub fn fields(&self) -> &[Field]

Returns the directory’s fields, sorted by ascending tag.

pub fn get(&self, tag: u16) -> Option<&Value>

Returns the value of tag, or None if absent.

pub fn get_u32(&self, tag: u16) -> Option<u32>

Returns tag coerced to a single u32 (accepting BYTE/SHORT/LONG).

pub fn get_u32_vec(&self, tag: u16) -> Option<Vec<u32>>

Returns tag coerced to a Vec<u32> (accepting BYTE/SHORT/LONG).

pub fn set(&mut self, tag: u16, value: Value)

Inserts or replaces the value of tag, keeping the fields sorted.

Trait Implementations

impl Clone for Ifd

fn clone(&self) -> Ifd

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Ifd

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

Formats the value using the given formatter.

impl Default for Ifd

fn default() -> Ifd

Returns the “default value” for a type.

impl PartialEq for Ifd

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl StructuralPartialEq for Ifd