Add static analysis with phpstan

.github/workflows/phpstan.yml

@@ -0,0 +1,29 @@
+name: Static analysis (phpstan)
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: 8.2
+        extensions: mbstring, gd, bcmath, imagick
+
+    - name: Install dependencies
+      run: composer install --prefer-dist --no-progress --no-interaction
+
+    - name: Run analysis
+      run: vendor/bin/phpstan --error-format=github --no-progress

.github/workflows/phpunit.yml

@@ -1,18 +1,24 @@
-name: phpunit
+name: Unit tests (phpunit)
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - main
+  pull_request:
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
 
     strategy:
       matrix:
         php-versions: ['7.3', '7.4', '8.0', '8.1', '8.2']
 
     steps:
-    - uses: actions/checkout@v4
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
 
     - name: Setup PHP
       uses: shivammathur/setup-php@v2
@@ -24,7 +30,7 @@ jobs:
       run: composer validate
 
     - name: Install dependencies
-      run: composer install --prefer-dist --no-progress
+      run: composer install --prefer-dist --no-progress --no-interaction
 
     - name: Run test suite
       run: composer run-script test

composer.json

@@ -22,7 +22,8 @@
         "ext-mbstring": "*"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.5"
+        "phpunit/phpunit": "^9.5",
+        "phpstan/phpstan": "^1.10"
     },
     "suggest": {
         "ext-bcmath": "Barcode IMB (Intelligent Mail Barcode) needs bcmath extension",

phpstan.neon.dist

@@ -0,0 +1,4 @@
+parameters:
+  paths:
+    - src
+  level: 4

src/BarcodeGeneratorPNG.php

@@ -76,7 +76,7 @@ public function getBarcode(string $barcode, $type, int $widthFactor = 2, int $he
                 $barHeight = round(($bar->getHeight() * $height / $barcodeData->getHeight()), 3);
 
                 // draw a vertical bar
-                if ($this->useImagick && isset($imagickBarsShape)) {
+                if ($this->useImagick) {
                     $imagickBarsShape->rectangle($positionHorizontal, $y, ($positionHorizontal + $barWidth - 1), ($y + $barHeight));
                 } else {
                     imagefilledrectangle($image, $positionHorizontal, $y, ($positionHorizontal + $barWidth - 1), ($y + $barHeight), $gdForegroundColor);
@@ -85,7 +85,7 @@ public function getBarcode(string $barcode, $type, int $widthFactor = 2, int $he
             $positionHorizontal += $barWidth;
         }
 
-        if ($this->useImagick && isset($imagickBarsShape)) {
+        if ($this->useImagick) {
             $image = $this->createImagickImageObject($width, $height);
             $image->drawImage($imagickBarsShape);
             return $image->getImageBlob();

src/Types/TypeCode11.php

@@ -106,6 +106,6 @@ private function getCheckDigitK(string $code): string
         }
         $check %= 11;
 
-        return $check;
+        return (string)$check;
     }
 }

src/Types/TypeCode128.php

@@ -4,6 +4,7 @@
 
 use Picqer\Barcode\Barcode;
 use Picqer\Barcode\BarcodeBar;
+use Picqer\Barcode\Exceptions\BarcodeException;
 use Picqer\Barcode\Exceptions\InvalidCharacterException;
 use Picqer\Barcode\Exceptions\InvalidLengthException;
 
@@ -164,7 +165,7 @@ public function getBarcodeData(string $code): Barcode
                     $char_id = ord($char);
                     if (($char_id >= 241) AND ($char_id <= 244)) {
                         $code_data[] = $fnc_a[$char_id];
-                    } elseif (($char_id >= 0) AND ($char_id <= 95)) {
+                    } elseif ($char_id <= 95) {
                         $code_data[] = strpos($keys_a, $char);
                     } else {
                         throw new InvalidCharacterException('Char ' . $char . ' is unsupported');
@@ -331,11 +332,18 @@ public function getBarcodeData(string $code): Barcode
                                 $code_data[] = intval($chrnum);
                             }
                             break;
+
+                        default:
+                            throw new InvalidCharacterException('Do not support different mode then A, B or C.');
                     }
                 }
         }
 
         // calculate check character
+        if (! isset($startid)) {
+            throw new BarcodeException('Could not determine start char for barcode.');
+        }
+
         $sum = $startid;
         foreach ($code_data as $key => $val) {
             $sum += ($val * ($key + 1));

src/Types/TypeCode32.php

@@ -109,6 +109,6 @@ protected function checksum_code32(string $code): string
             }
         }
 
-        return (string)$s % 10;
+        return (string)($s % 10);
     }
 }

src/Types/TypeIntelligentMailBarcode.php

@@ -378,11 +378,11 @@ public function getBarcodeData(string $code): Barcode
         // convert codewords to characters
         $characters = [];
         $bitmask = 512;
-        foreach ($codewords as $k => $val) {
+        foreach ($codewords as $val) {
             if ($val <= 1286) {
-                $chrcode = $table5of13[$val];
+                $chrcode = (int)$table5of13[$val];
             } else {
-                $chrcode = $table2of13[($val - 1287)];
+                $chrcode = (int)$table2of13[($val - 1287)];
             }
             if (($fcs & $bitmask) > 0) {
                 // bitwise invert
@@ -517,7 +517,7 @@ protected function hex_to_dec($hex)
      * @return array requested table
      * @protected
      */
-    protected function imb_tables($n, $size)
+    protected function imb_tables(int $n, int $size): array
     {
         $table = [];
         $lli = 0; // LUT lower index

src/Types/TypeInterleaved25Checksum.php

@@ -86,6 +86,6 @@ protected function getChecksum(string $code): string
             $r = (10 - $r);
         }
 
-        return $r;
+        return (string)$r;
     }
 }

src/Types/TypePharmacodeTwoCode.php

@@ -9,6 +9,8 @@
 
 use Picqer\Barcode\Barcode;
 use Picqer\Barcode\BarcodeBar;
+use Picqer\Barcode\Exceptions\BarcodeException;
+use Picqer\Barcode\Exceptions\InvalidCharacterException;
 use Picqer\Barcode\Exceptions\InvalidLengthException;
 
 class TypePharmacodeTwoCode implements TypeInterface
@@ -62,6 +64,9 @@ public function getBarcodeData(string $code): Barcode
                     $p = 0;
                     $h = 2;
                     break;
+
+                default:
+                    throw new InvalidCharacterException('Could not find bar for char.');
             }
 
             $barcode->addBar(new BarcodeBar(1, $h, 1, $p));

src/Types/TypeUpcExtension2.php

@@ -20,20 +20,20 @@ public function getBarcodeData(string $code): Barcode
     {
         $len = $this->length;
 
-        //Padding
+        // Padding
         $code = str_pad($code, $len, '0', STR_PAD_LEFT);
 
-        // calculate check digit
+        // Calculate check digit
         if ($len == 2) {
             $r = $code % 4;
         } elseif ($len == 5) {
-            $r = (3 * ($code[0] + $code[2] + $code[4])) + (9 * ($code[1] + $code[3]));
+            $r = (3 * intval($code[0] . $code[2] . $code[4])) + (9 * intval($code[1] . $code[3]));
             $r %= 10;
         } else {
             throw new InvalidCheckDigitException();
         }
 
-        //Convert digits to bars
+        // Convert digits to bars
         $codes = [
             'A' => [ // left odd parity
                 '0' => '0001101',