file_rw

file_rw is a Rust crate for high-performance, memory-mapped file I/O utilities.

Features

• High-performance file reading and writing capabilities
• Memory-mapped files for efficient access and manipulation
• High-level, efficient abstractions of common operations on file contents

Installation

You can include the crate in your Rust project by either:

• Adding the following to your Cargo.toml file:

[dependencies]
file_rw = "0.3.1"

• Run the following Cargo command to automatically do so:

cargo add file_rw

Modules

• file: File operations
• read: File reading capabilities
• write: File writing capabilities

Re-exports

The crate re-exports the FileReader and FileWriter structs for external use. These structs contain the aforementioned utilities.

Examples

use file_rw::{FileReader, FileWriter};
use tempfile::tempdir;

let tempdir = tempdir().unwrap();
let tempdir_path = tempdir.path();
let test_path = tempdir_path.join("test.txt");
let mut writer = FileWriter::open(&test_path);
writer.append("Hello World!"); //Hello World!
writer.overwrite("Hello"); //Hello
writer.write("Hullo"); //Hullo

writer.find_replace_nth("l", "y", 0); //Huylo
writer.find_replace("u", "e"); //Heylo
writer.find_replace("lo", "yyy"); //Heyyyy
writer.find_replace_all("y", "i"); //Heiiii
writer.find_replace("e", "i"); //Hiiiii
let reader = writer.to_reader();
let content = reader.read_to_string();
assert_eq!(content, "Hiiiii");