patch: provide fallback for mb_funcs when mbstring ext isn't loaded

Author: dimtrovich

src/Helper/InflectsString.php

@@ -12,7 +12,11 @@
 namespace Ahc\Cli\Helper;
 
 use function lcfirst;
+use function mb_strwidth;
+use function mb_substr;
 use function str_replace;
+use function strlen;
+use function substr;
 use function trim;
 use function ucwords;
 
@@ -47,4 +51,28 @@ public function toWords(string $string): string
 
         return ucwords($words);
     }
+
+    /**
+     * Return width of string
+     */
+    public function strwidth(string $string): int
+    {
+        if (function_exists('mb_strwidth')) {
+            return mb_strwidth($string);
+        }
+
+        return strlen($string);
+    }
+
+    /**
+     * Get part of string
+     */
+    public function substr(string $string, int $start, ?int $length = null): string
+    {
+        if (function_exists('mb_substr')) {
+            return mb_substr($string, $start, $length);
+        }
+
+        return substr($string, $start, $length);
+    }
 }

src/Output/Table.php

@@ -23,8 +23,6 @@
 use function implode;
 use function is_array;
 use function max;
-use function mb_strwidth;
-use function mb_substr;
 use function reset;
 use function sprintf;
 use function str_repeat;
@@ -84,7 +82,7 @@ public function render(array $rows, array $styles = []): string
                     $word = str_replace($matches[1], '', $text);
                     $word = preg_replace('/\\x1b\[0m/', '', $word);
 
-                    $size += mb_strwidth($text) - mb_strwidth($word);
+                    $size += $this->strwidth($text) - $this->strwidth($word);
                 }
 
                 $parts[] = "$start " . $this->strPad($text, $size, ' ') . " $end";
@@ -131,8 +129,8 @@ protected function normalize(array $rows): array
                 return $col;
             }, $cols);
 
-            $span   = array_map('mb_strwidth', $cols);
-            $span[] = mb_strwidth($col);
+            $span   = array_map([$this, 'strwidth'], $cols);
+            $span[] = $this->strwidth($col);
             $value  = max($span);
         }
 
@@ -182,10 +180,10 @@ protected function parseStyle(array|callable $style, $val, array $row, array $ta
      */
     protected function strPad(string $string, int $length, string $pad_string = ' '): string
     {
-        if (1 > $paddingRequired = $length - mb_strwidth($string)) {
+        if (1 > $paddingRequired = $length - $this->strwidth($string)) {
             return $string;
         }
 
-        return $string . mb_substr(str_repeat($pad_string, $paddingRequired), 0, $paddingRequired);
+        return $string . $this->substr(str_repeat($pad_string, $paddingRequired), 0, $paddingRequired);
     }
 }

src/Output/Writer.php

@@ -11,6 +11,7 @@
 
 namespace Ahc\Cli\Output;
 
+use Ahc\Cli\Helper\InflectsString;
 use Ahc\Cli\Helper\Terminal;
 
 use function fopen;
@@ -19,7 +20,6 @@
 use function method_exists;
 use function str_repeat;
 use function stripos;
-use function strlen;
 use function strpos;
 use function ucfirst;
 
@@ -190,6 +190,8 @@
  */
 class Writer
 {
+    use InflectsString;
+
     /** @var resource Output file handle */
     protected $stream;
 
@@ -339,7 +341,7 @@ public function justify(string $first, ?string $second = null, array $options =
 
         $second        = (string) $second;
         $terminalWidth = $this->terminal->width() ?? 80;
-        $dashWidth     = $terminalWidth - (mb_strwidth($first) + mb_strwidth($second));
+        $dashWidth     = $terminalWidth - ($this->strwidth($first) + $this->strwidth($second));
         // remove left and right margins because we're going to add 1 space on each side (after/before the text).
         // if we don't have a second element, we just remove the left margin
         $dashWidth -= $second === '' ? 1 : 2;