Use autoloader instead of requiring class files

For backwards compatibility (if someone still includes a class file
directly instead of using the autoloader), we make sure to always use
the autoloader whenever appropriate.

Addresses googleapis#341

Author: ltrebing

examples/appengineauth.php

@@ -21,10 +21,7 @@
   Make an API request authenticated via the 
   AppIdentity service on AppEngine.
  ************************************************/
-set_include_path("../src/" . PATH_SEPARATOR . get_include_path());
-require_once 'Google/Client.php';
-require_once 'Google/Auth/AppIdentity.php';
-require_once 'Google/Service/Storage.php';
+require_once realpath(dirname(__FILE__) . '/../autoload.php');
 
 echo pageHeader("AppIdentity Account Access");
 

examples/batch.php

@@ -22,10 +22,7 @@
   books API again as an example, but this time we
   will batch up two queries into a single call.
  ************************************************/
-set_include_path("../src/" . PATH_SEPARATOR . get_include_path());
-require_once 'Google/Client.php';
-require_once 'Google/Service/Books.php';
-require_once 'Google/Http/Batch.php';
+require_once realpath(dirname(__FILE__) . '/../autoload.php');
 
 /************************************************
   We create the client and set the simple API

examples/fileupload.php

@@ -17,10 +17,7 @@
 include_once "templates/base.php";
 session_start();
 
-set_include_path("../src/" . PATH_SEPARATOR . get_include_path());
-require_once 'Google/Client.php';
-require_once 'Google/Http/MediaFileUpload.php';
-require_once 'Google/Service/Drive.php';
+require_once realpath(dirname(__FILE__) . '/../autoload.php');
 
 /************************************************
   We'll setup an empty 20MB file to upload.

examples/idtoken.php

@@ -17,8 +17,7 @@
 include_once "templates/base.php";
 session_start();
 
-set_include_path("../src/" . PATH_SEPARATOR . get_include_path());
-require_once 'Google/Client.php';
+require_once realpath(dirname(__FILE__) . '/../autoload.php');
 
 /************************************************
   ATTENTION: Fill in these values! Make sure

examples/multi-api.php

@@ -17,10 +17,7 @@
 include_once "templates/base.php";
 session_start();
 
-set_include_path("../src/" . PATH_SEPARATOR . get_include_path());
-require_once 'Google/Client.php';
-require_once 'Google/Service/YouTube.php';
-require_once 'Google/Service/Drive.php';
+require_once realpath(dirname(__FILE__) . '/../autoload.php');
 
 /************************************************
   ATTENTION: Fill in these values! Make sure

examples/service-account.php

@@ -21,9 +21,7 @@
   Make an API request authenticated with a service
   account.
  ************************************************/
-set_include_path("../src/" . PATH_SEPARATOR . get_include_path());
-require_once 'Google/Client.php';
-require_once 'Google/Service/Books.php';
+require_once realpath(dirname(__FILE__) . '/../autoload.php');
 
 /************************************************
   ATTENTION: Fill in these values! You can get

examples/simple-query.php

@@ -25,9 +25,7 @@
   should use our quota, which is higher than the
   anonymous quota (which is limited per IP).
  ************************************************/
-set_include_path("../src/" . PATH_SEPARATOR . get_include_path());
-require_once 'Google/Client.php';
-require_once 'Google/Service/Books.php';
+require_once realpath(dirname(__FILE__) . '/../autoload.php');
 
 /************************************************
   We create the client and set the simple API

examples/simplefileupload.php

@@ -17,10 +17,7 @@
 include_once "templates/base.php";
 session_start();
 
-set_include_path("../src/" . PATH_SEPARATOR . get_include_path());
-require_once 'Google/Client.php';
-require_once 'Google/Http/MediaFileUpload.php';
-require_once 'Google/Service/Drive.php';
+require_once realpath(dirname(__FILE__) . '/../autoload.php');
 
 /************************************************
   We'll setup an empty 1MB file to upload.

examples/user-example.php

@@ -17,9 +17,7 @@
 include_once "templates/base.php";
 session_start();
 
-set_include_path("../src/" . PATH_SEPARATOR . get_include_path());
-require_once 'Google/Client.php';
-require_once 'Google/Service/Urlshortener.php';
+require_once realpath(dirname(__FILE__) . '/../autoload.php');
 
 /************************************************
   ATTENTION: Fill in these values! Make sure

src/Google/Auth/Abstract.php

@@ -14,7 +14,8 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-require_once "Google/Http/Request.php";
+
+require_once realpath(dirname(__FILE__) . '/../../../autoload.php');
 
 /**
  * Abstract class for the Authentication in the API client