From 3550730a9fb18bed62578a261e360dd9aaad6b2a Mon Sep 17 00:00:00 2001
From: Jephte Clain <Jephte.Clain@univ-reunion.fr>
Date: Wed, 24 Apr 2024 23:16:47 +0400
Subject: [PATCH] bugs

---
 src/cl.php              | 9 +++++++++
 src/os/EOFException.php | 4 ++--
 src/os/IOException.php  | 4 ++--
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/cl.php b/src/cl.php
index 6d57b73..eb9fcf7 100644
--- a/src/cl.php
+++ b/src/cl.php
@@ -141,6 +141,15 @@ class cl {
     return $array !== null? array_keys($array): [];
   }
 
+  /**
+   * retourner la première valeur de $array ou $default si le tableau est null
+   * ou vide
+   */
+  static final function first($array, $default=null) {
+    if (is_array($array)) return $array[array_key_first($array)];
+    return $default;
+  }
+
   #############################################################################
 
   /**
diff --git a/src/os/EOFException.php b/src/os/EOFException.php
index 8f8e2ea..0fc65fa 100644
--- a/src/os/EOFException.php
+++ b/src/os/EOFException.php
@@ -7,8 +7,8 @@ namespace nur\sery\os;
  */
 class EOFException extends IOException {
   static final function ensure_not_eof($data, bool $throw=true, $eof=false) {
-    if (!$throw) return null;
-    elseif ($data !== $eof) return $data;
+    if ($data !== $eof) return $data;
+    elseif (!$throw) return null;
     else throw new self();
   }
 }
diff --git a/src/os/IOException.php b/src/os/IOException.php
index 69fce1d..262b6e7 100644
--- a/src/os/IOException.php
+++ b/src/os/IOException.php
@@ -27,8 +27,8 @@ class IOException extends RuntimeException {
   }
 
   static final function ensure_valid($value, bool $throw=true, $invalid=false) {
-    if (!$throw) return null;
-    elseif ($value !== $invalid) return $value;
+    if ($value !== $invalid) return $value;
+    elseif (!$throw) return null;
     else throw self::error();
   }