[build.rs] Fix scdoc parent stdio inheritance

Signed-off-by: Shinyzenith <[email protected]>

build.rs

@@ -2,19 +2,19 @@ use std::{
     fs::{read_dir, File, OpenOptions},
     io::ErrorKind,
     path::Path,
-    process::exit,
-    process::{Command, Stdio},
+    process::{exit, Command, Stdio},
 };
 
 fn main() {
-    // Check if scdoc command exists
-    match Command::new("scdoc").spawn() {
-        Err(e) => {
-            if let ErrorKind::NotFound = e.kind() {
-                exit(0);
-            }
+    if let Err(e) = Command::new("scdoc")
+        .stdin(Stdio::null())
+        .stdout(Stdio::null())
+        .stderr(Stdio::null())
+        .spawn()
+    {
+        if let ErrorKind::NotFound = e.kind() {
+            exit(0);
         }
-        _ => {}
     }
 
     let mut man_pages: Vec<(String, String)> = Vec::new();
@@ -25,17 +25,18 @@ fn main() {
         }
 
         if let Some(file_name) = path.path().to_str() {
+            if path.path().extension().unwrap().to_str().unwrap() == "gz" {
+                continue;
+            }
+
             let man_page_name = file_name.replace(".scd", ".gz");
             man_pages.push((file_name.to_string(), man_page_name));
         }
     }
 
     for man_page in man_pages {
-        let output = OpenOptions::new()
-            .write(true)
-            .create(true)
-            .open(Path::new(&man_page.1))
-            .unwrap();
+        let output =
+            OpenOptions::new().write(true).create(true).open(Path::new(&man_page.1)).unwrap();
         _ = Command::new("scdoc")
             .stdin(Stdio::from(File::open(man_page.0).unwrap()))
             .stdout(output)