Remove libc dependency (#336)

* remove libc dependency

* save snapshots from stdout

Cargo.toml

@@ -7,7 +7,6 @@ edition = "2021"
 
 [dependencies]
 intder = { git = "https://github.com/ntBre/intder" }
-libc = "0.2.169"
 nalgebra = "0.33.2"
 psqs = { git = "https://github.com/ntBre/psqs" }
 rust-anpass = { git = "https://github.com/ntBre/rust-anpass" }

src/main.rs

@@ -1,4 +1,4 @@
-use std::{fs::File, os::unix::prelude::AsRawFd, path::Path};
+use std::path::Path;
 
 use pbqff::{
     cleanup,
@@ -75,15 +75,7 @@ fn main() -> Result<(), std::io::Error> {
     if path.exists() && !args.overwrite {
         die!("existing pbqff output. overwrite with -o/--overwrite");
     }
-    let outfile = File::create(path).expect("failed to create outfile");
-    let logfile = File::create("pbqff.log").expect("failed to create log file");
-    let out_fd = outfile.as_raw_fd();
-    let log_fd = logfile.as_raw_fd();
-    // redirect stdout to outfile and stderr to logfile
-    unsafe {
-        libc::dup2(out_fd, 1);
-        libc::dup2(log_fd, 2);
-    }
+
     let config = Config::load(&args.infile);
     println!("PID: {}", std::process::id());
     println!("version: {}", version());

tests/run.rs

@@ -1,4 +1,4 @@
-use std::{fs::read_to_string, path::Path};
+use std::path::Path;
 
 use assert_cmd::Command;
 use insta::{assert_snapshot, with_settings};
@@ -21,11 +21,11 @@ fn run(path: &str, other_files: &[&str]) -> std::io::Result<()> {
     let assert = cmd.arg("pbqff.toml").current_dir(&dir).assert();
     let output = assert.get_output();
 
+    let stderr = String::from_utf8_lossy(&output.stderr);
+    let stdout = String::from_utf8_lossy(&output.stdout);
     assert!(
         output.status.success(),
-        "stderr: {}\nlog: {}",
-        String::from_utf8_lossy(&output.stderr),
-        read_to_string(dir.path().join("pbqff.log"))?,
+        "stderr: {stderr}\nstdout: {stdout}"
     );
 
     // filter out essentially all of the numerical results just to check that
@@ -49,7 +49,7 @@ fn run(path: &str, other_files: &[&str]) -> std::io::Result<()> {
         snapshot_suffix => path
 
     }, {
-        assert_snapshot!(read_to_string(dir.path().join("pbqff.out")).unwrap());
+        assert_snapshot!(stdout);
     });
 
     Ok(())