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Metadata

Struct Metadata 

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pub struct Metadata { /* private fields */ }
Expand description

PDF document metadata.

Contains standard PDF metadata fields. All fields are optional since PDFs may have incomplete or missing metadata.

§Example

use pdfvec::{Extractor, Result};

fn main() -> Result<()> {
    let data = std::fs::read("document.pdf")?;
    let meta = Extractor::new().extract_metadata(&data)?;

    println!("Title: {:?}", meta.title());
    println!("Author: {:?}", meta.author());
    println!("Pages: {}", meta.page_count());
    Ok(())
}

Implementations§

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impl Metadata

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pub fn title(&self) -> Option<&str>

Returns the document title, if present.

§Example
let meta = Extractor::new().extract_metadata(&data)?;
if let Some(title) = meta.title() {
    println!("Document: {title}");
}
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pub fn author(&self) -> Option<&str>

Returns the document author, if present.

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pub fn subject(&self) -> Option<&str>

Returns the document subject, if present.

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pub fn keywords(&self) -> Option<&str>

Returns the document keywords, if present.

Keywords are typically comma or space separated.

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pub fn creator(&self) -> Option<&str>

Returns the application that created the original document.

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pub fn producer(&self) -> Option<&str>

Returns the application that produced the PDF.

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pub fn creation_date(&self) -> Option<DateTime<Utc>>

Returns the document creation date, if present and valid.

§Example
let meta = Extractor::new().extract_metadata(&data)?;
if let Some(date) = meta.creation_date() {
    println!("Created: {}", date.format("%Y-%m-%d"));
}
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pub fn modification_date(&self) -> Option<DateTime<Utc>>

Returns the document modification date, if present and valid.

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pub fn page_count(&self) -> u32

Returns the number of pages in the document.

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pub fn has_title(&self) -> bool

Returns true if the document has a title.

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pub fn has_author(&self) -> bool

Returns true if the document has an author.

Trait Implementations§

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impl Clone for Metadata

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fn clone(&self) -> Metadata

Returns a duplicate 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 Metadata

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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 Metadata

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fn default() -> Metadata

Returns the “default value” for a type. Read more
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impl PartialEq for Metadata

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

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 Eq for Metadata

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impl StructuralPartialEq for Metadata

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, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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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.