mirror of
https://github.com/Ap0dexMe0/unixtract.git
synced 2026-07-16 05:04:22 +02:00
23 lines
718 B
Rust
23 lines
718 B
Rust
use std::fs::{File};
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use std::io::{self, Read, Seek, SeekFrom};
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pub fn read_file(mut file: &File, offset: u64, size: usize) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
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file.seek(SeekFrom::Start(offset))?;
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let mut buffer = vec![0u8; size];
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let _bytes_read = file.read(&mut buffer)?;
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// reset seek (!
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file.seek(SeekFrom::Start(offset))?;
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Ok(buffer)
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}
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pub fn read_exact<R: Read>(reader: &mut R, size: usize) -> io::Result<Vec<u8>> {
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let mut buf = vec![0u8; size];
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reader.read_exact(&mut buf)?;
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Ok(buf)
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}
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pub fn string_from_bytes(buf: &[u8]) -> String {
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let end = buf.iter().position(|&b| b == 0).unwrap_or(buf.len());
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String::from_utf8_lossy(&buf[..end]).to_string()
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} |