added Schema::infer

README.md

@@ -159,6 +159,13 @@ validate the row to get a list of errors
 $schema->validateRow(["id" => "foobar"]);  // ["id is not numeric", "name is required" .. ]
 ```
 
+Infer schema based on source data:
+
+```php
+$schema = Schema::infer("tests/fixtures/data.csv");
+$table->schema()->fields();  // ["first_name" => StringField, "last_name" => StringField, "order" => IntegerField]
+```
+
 You can also create a new empty schema for editing
 
 ```php

src/Schema.php

@@ -85,6 +85,13 @@ public static function validate($descriptor)
         }
     }
 
+    public static function infer($dataSource, $csvDialect = null, $limit = null)
+    {
+        $table = new Table($dataSource, null, $csvDialect);
+
+        return $table->schema($limit ? $limit : 100);
+    }
+
     /**
      * @return object
      */

tests/SchemaTest.php

@@ -517,6 +517,35 @@ public function testSpecsUriFormat()
         ]], $validator->getErrors());
     }
 
+    public function testSchemaInfer()
+    {
+        $schema = Schema::infer('tests/fixtures/data.csv');
+        $this->assertEquals((object) [
+            'fields' => [
+                (object) ['name' => 'first_name', 'type' => 'string'],
+                (object) ['name' => 'last_name', 'type' => 'string'],
+                (object) ['name' => 'order', 'type' => 'integer'],
+            ],
+        ], $schema->descriptor());
+    }
+
+    public function testSchemaInferCsvDialect()
+    {
+        $schema = Schema::infer('tests/fixtures/data.lolsv', [
+            'delimiter' => 'o',
+            'quoteChar' => 'L',
+            'header' => true,
+            'caseSensitiveHeader' => false,
+        ]);
+        $this->assertEquals((object) [
+            'fields' => [
+                (object) ['name' => 'first_name', 'type' => 'string'],
+                (object) ['name' => 'last_name', 'type' => 'string'],
+                (object) ['name' => 'order', 'type' => 'integer'],
+            ],
+        ], $schema->descriptor());
+    }
+
     public function tearDown()
     {
         foreach ($this->tempFiles as $tempFile) {