Fix for json fields containing a dollar sign (Issue #59)

src/JsonSchema/SchemaBuilder.php

@@ -396,7 +396,15 @@ private function processOther()
             } elseif ($value instanceof \stdClass) {
                 $export = '(object)' . PhpCode::varExport((array)$value);
             } elseif (is_string($value)) {
-                $export = '"' . str_replace(array('\\', "\n", "\r", "\t", '"', '${', '{$'), array('\\\\', '\n', '\r', '\t', '\"', '\${', '{\$'), $value) . '"';
+                switch ($key) {
+                    case 'pattern':
+                        $export = '"' . str_replace(array('\\', "\n", "\r", "\t", '"', '${', '{$'), array('\\\\', '\n', '\r', '\t', '\"', '\${', '{\$'), $value) . '"';
+                        break;
+                    default:
+                        $export = '"' . str_replace(array('\\', "\n", "\r", "\t", '"', '$'), array('\\\\', '\n', '\r', '\t', '\"', '\$'), $value) . '"';
+                        break;
+                }
+
             } else {
                 $export = PhpCode::varExport($value);
             }

tests/src/PHPUnit/Issues/Issue59Test.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace Swaggest\PhpCodeBuilder\Tests\PHPUnit\Issues;
+
+use Swaggest\JsonSchema\Exception\ConstException;
+use Swaggest\JsonSchema\Exception\ObjectException;
+use Swaggest\JsonSchema\Schema;
+use Swaggest\PhpCodeBuilder\App\PhpApp;
+use Swaggest\PhpCodeBuilder\JsonSchema\ClassHookCallback;
+use Swaggest\PhpCodeBuilder\JsonSchema\PhpBuilder;
+use Swaggest\PhpCodeBuilder\PhpClass;
+use Swaggest\PhpCodeBuilder\Tests\Tmp\Issue59\Sample;
+
+/**
+ * @see https://github.com/swaggest/php-code-builder/issues/59
+ */
+class Issue59Test extends \PHPUnit_Framework_TestCase
+{
+    function testIssue59()
+    {
+        $schemaJson = <<<'JSON'
+{
+  "type": "object",
+  "description": "Description with $dollar sign",
+  "properties": {
+    "foo": {
+      "type": "string"
+    }
+  }
+}
+JSON;
+
+        $appPath = realpath(__DIR__ . '/../../Tmp') . '/Issue59';
+        $appNs = 'Swaggest\PhpCodeBuilder\Tests\Tmp\\Issue59';
+
+        $app = new PhpApp();
+        $app->setNamespaceRoot($appNs, '.');
+
+        $schema = Schema::import(json_decode($schemaJson));
+        $builder = new PhpBuilder();
+        $builder->buildSetters = false;
+        $builder->makeEnumConstants = true;
+        $builder->skipSchemaDescriptions = false;
+
+        $builder->classCreatedHook = new ClassHookCallback(
+            function (PhpClass $class, $path, $schema) use ($app, $appNs) {
+                $class->setNamespace($appNs);
+                if ('#' === $path) {
+                    $class->setName('Sample'); // Class name for root schema
+                }
+                $app->addClass($class);
+            }
+        );
+
+
+        $builder->getType($schema);
+
+        $app->clearOldFiles($appPath);
+        $app->store($appPath);
+
+        exec('git diff ' . $appPath, $out);
+        $out = implode("\n", $out);
+        $this->assertSame('', $out, "Generated files changed");
+    }
+
+
+    function testGeneratedValid()
+    {
+        Sample::import((object)array('foo' => 'abc'));
+    }
+
+}

tests/src/Tmp/Issue59/Sample.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * @file ATTENTION!!! The code below was carefully crafted by a mean machine.
+ * Please consider to NOT put any emotional human-generated modifications as the splendid AI will throw them away with no mercy.
+ */
+
+namespace Swaggest\PhpCodeBuilder\Tests\Tmp\Issue59;
+
+use Swaggest\JsonSchema\Constraint\Properties;
+use Swaggest\JsonSchema\Schema;
+use Swaggest\JsonSchema\Structure\ClassStructure;
+
+
+class Sample extends ClassStructure
+{
+    /** @var string */
+    public $foo;
+
+    /**
+     * @param Properties|static $properties
+     * @param Schema $ownerSchema
+     */
+    public static function setUpProperties($properties, Schema $ownerSchema)
+    {
+        $properties->foo = Schema::string();
+        $ownerSchema->type = Schema::OBJECT;
+        $ownerSchema->description = "Description with \$dollar sign";
+    }
+}