From ccf8f404a8c77694b8d0f076152d8514d0750732 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Fri, 14 Oct 2022 19:36:20 +0200
Subject: [PATCH] libc: Make the stdio initialization code cleaner

---
 libs/libc/src/init.cpp | 33 +++++++++++++++------------------
 1 file changed, 15 insertions(+), 18 deletions(-)

diff --git a/libs/libc/src/init.cpp b/libs/libc/src/init.cpp
index 24df6f78..77e80d14 100644
--- a/libs/libc/src/init.cpp
+++ b/libs/libc/src/init.cpp
@@ -10,25 +10,22 @@ static void terminate_libc()
     fclose(stderr);
 }
 
+static void check_for_file(int fd, FILE** target_stream, const char* path, const char* mode)
+{
+    if (lseek(fd, 0, SEEK_CUR) < 0)
+    {
+        if (errno == EBADF) *target_stream = fopen(path, mode);
+        else
+            exit(errno);
+        if (!*target_stream) exit(errno);
+        errno = 0;
+    }
+    else { *target_stream = fdopen(fd, mode); }
+}
+
 extern "C" void initialize_libc()
 {
-    if (lseek(0, 0, SEEK_CUR) < 0)
-    {
-        if (errno == EBADF) stdout = fopen("/dev/console", "rw");
-        else
-            exit(errno);
-        if (!stdout) exit(errno);
-        errno = 0;
-    }
-    else { stdout = fdopen(0, "rw"); }
-    if (lseek(1, 0, SEEK_CUR) < 0)
-    {
-        if (errno == EBADF) stderr = fopen("/dev/console", "rw");
-        else
-            exit(errno);
-        if (!stderr) exit(errno);
-        errno = 0;
-    }
-    else { stderr = fdopen(1, "rw"); }
+    check_for_file(0, &stdout, "/dev/console", "rw");
+    check_for_file(1, &stderr, "/dev/console", "rw");
     atexit(terminate_libc);
 }
\ No newline at end of file