Struct ReadRange 

pub struct ReadRange {
    pub start_line: Option<usize>,
    pub end_line: Option<usize>,
    pub offset: Option<u64>,
    pub limit: Option<u64>,
}

Range specification for partial file reads.

Fields

start_line: Option<usize>

Start line (1-indexed). If set, read from this line.

end_line: Option<usize>

End line (1-indexed, inclusive). If set, read until this line.

offset: Option<u64>

Byte offset to start reading from.

limit: Option<u64>

Maximum number of bytes to read.

Implementations

impl ReadRange

pub fn lines(start: usize, end: usize) -> ReadRange

Create a range for reading specific lines.

pub fn bytes(offset: u64, limit: u64) -> ReadRange

Create a range for reading bytes at an offset.

pub fn apply(&self, content: &[u8]) -> Vec<u8>

Apply this range to already-read file content.

Byte ranges win over line ranges when both are set. A line range on non-UTF-8 content returns the content untouched (there are no lines to slice). This is the single source of truth for range slicing, shared by the Filesystem::read_range default and the kernel backends.

Trait Implementations

impl Clone for ReadRange

fn clone(&self) -> ReadRange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReadRange

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

Formats the value using the given formatter.

impl Default for ReadRange

fn default() -> ReadRange

Returns the “default value” for a type.