Struct FileReader 

pub struct FileReader { /* private fields */ }

File reader with support for memory mapping.

Automatically chooses the best reading strategy based on file size:

• Small files (< 1MB): Read directly into memory
• Large files (>= 1MB): Use memory mapping

Examples

use rlm_rs::io::FileReader;

let reader = FileReader::open("large_file.txt").unwrap();
let content = reader.read_to_string().unwrap();

Implementations

impl FileReader

pub fn open<P: AsRef<Path>>(path: P) -> Result<Self>

Opens a file for reading.

Arguments

• path - Path to the file.

Errors

Returns an error if the file doesn’t exist or can’t be opened.

pub const fn size(&self) -> u64

Returns the file size in bytes.

pub fn path(&self) -> &str

Returns the file path.

pub fn read_to_string(&self) -> Result<String>

Reads the file content as a string.

Uses memory mapping for large files.

Errors

Returns an error if reading fails or content is not valid UTF-8.

pub fn read_to_bytes(&self) -> Result<Vec<u8>>

Reads the file content as bytes.

Errors

Returns an error if reading fails.

pub fn mmap(&self) -> Result<Mmap>

Creates a memory-mapped view of the file.

Useful when you need to access the file content multiple times without copying.

Errors

Returns an error if memory mapping fails.