WIP pfl upg extractor

src/common.rs

@@ -1,5 +1,5 @@
 use std::fs::{File};
-use std::io::{Read, Seek, SeekFrom};
+use std::io::{self, Read, Seek, SeekFrom};
 
 pub fn read_file(mut file: &File, offset: u64, size: usize) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
     file.seek(SeekFrom::Start(offset))?;
@@ -9,4 +9,15 @@ pub fn read_file(mut file: &File, offset: u64, size: usize) -> Result<Vec<u8>, B
     // reset seek (!
     file.seek(SeekFrom::Start(offset))?;
     Ok(buffer)
+}
+
+pub fn read_exact<R: Read>(reader: &mut R, size: usize) -> io::Result<Vec<u8>> {
+    let mut buf = vec![0u8; size];
+    reader.read_exact(&mut buf)?;
+    Ok(buf)
+}
+
+pub fn string_from_bytes(buf: &[u8]) -> String {
+    let end = buf.iter().position(|&b| b == 0).unwrap_or(buf.len());
+    String::from_utf8_lossy(&buf[..end]).to_string()
 }