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EseHeader

Struct EseHeader 

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pub struct EseHeader {
    pub signature: u32,
    pub format_version: u32,
    pub page_size: u32,
    pub db_time: u64,
    pub db_state: u32,
}
Expand description

Parsed ESE database file header.

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§signature: u32

ESE magic: 0x89ABCDEF (little-endian at offset 4).

§format_version: u32

Database format version.

§page_size: u32

Page size in bytes (typically 4096 or 8192).

§db_time: u64

Database time field (offset 0x10, 8 bytes LE).

Stored as a JET_LOGTIME-derived u64. The low 32 bits are compared against per-page db_time values to detect timestamp skew.

§db_state: u32

Database state (offset 0x28).

2 = dirty shutdown (log replay needed), 3 = clean shutdown.

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impl EseHeader

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pub const SIZE: usize = 4096

Size of the ESE header block (first full page).

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pub fn from_bytes(data: &[u8]) -> Result<Self, EseError>

Parse an ESE header from the first 4096 bytes of a database file.

ESE header layout (all little-endian):

  • Offset 0x00 (4 bytes): checksum
  • Offset 0x04 (4 bytes): signature (0x89ABCDEF)
  • Offset 0x08 (4 bytes): format version
  • Offset 0x0C (4 bytes): format revision
  • Offset 0xEC (4 bytes): page size (0 means 4096)

Trait Implementations§

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impl Clone for EseHeader

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fn clone(&self) -> EseHeader

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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

Formats the value using the given formatter. Read more

Auto Trait 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<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

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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.