From 206822ac696ad8ca249d1d7140f020f5b5a2d7b5 Mon Sep 17 00:00:00 2001
From: Omer Akram <om26er@gmail.com>
Date: Wed, 22 May 2019 16:39:26 +0500
Subject: [PATCH 1/5] Enable Windows Support

---
 src/escpos/printer.py | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/src/escpos/printer.py b/src/escpos/printer.py
index d7fc6ac..1763c5c 100644
--- a/src/escpos/printer.py
+++ b/src/escpos/printer.py
@@ -17,6 +17,7 @@ import usb.core
 import usb.util
 import serial
 import socket
+import sys
 
 from .escpos import Escpos
 from .exceptions import USBNotFoundError
@@ -68,19 +69,22 @@ class Usb(Escpos):
         self.idVendor = self.device.idVendor
         self.idProduct = self.device.idProduct
 
-        check_driver = None
+        # detach_kernel_driver() doesn't really work on Windows,
+        # causing the library to not work on that platform.
+        if sys.platform != 'win32':
+            check_driver = None
 
-        try:
-            check_driver = self.device.is_kernel_driver_active(0)
-        except NotImplementedError:
-            pass
-
-        if check_driver is None or check_driver:
             try:
-                self.device.detach_kernel_driver(0)
-            except usb.core.USBError as e:
-                if check_driver is not None:
-                    print("Could not detatch kernel driver: {0}".format(str(e)))
+                check_driver = self.device.is_kernel_driver_active(0)
+            except NotImplementedError:
+                pass
+
+            if check_driver is None or check_driver:
+                try:
+                    self.device.detach_kernel_driver(0)
+                except usb.core.USBError as e:
+                    if check_driver is not None:
+                        print("Could not detatch kernel driver: {0}".format(str(e)))
 
         try:
             self.device.set_configuration()

From d20646b2a941addfc1ca0cacc6d6cdabcfad41d0 Mon Sep 17 00:00:00 2001
From: Omer Akram <om26er@gmail.com>
Date: Wed, 22 May 2019 17:01:13 +0500
Subject: [PATCH 2/5] Make windows enablement code more intelligent

---
 src/escpos/printer.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/escpos/printer.py b/src/escpos/printer.py
index 1763c5c..ed38d4f 100644
--- a/src/escpos/printer.py
+++ b/src/escpos/printer.py
@@ -17,7 +17,6 @@ import usb.core
 import usb.util
 import serial
 import socket
-import sys
 
 from .escpos import Escpos
 from .exceptions import USBNotFoundError
@@ -69,9 +68,11 @@ class Usb(Escpos):
         self.idVendor = self.device.idVendor
         self.idProduct = self.device.idProduct
 
-        # detach_kernel_driver() doesn't really work on Windows,
-        # causing the library to not work on that platform.
-        if sys.platform != 'win32':
+        # pyusb has three backends: libusb0, libusb1 and openusb but
+        # only libusb1 backend implements the methods is_kernel_driver_active()
+        # and detach_kernel_driver(). This change helps enable this
+        # library to work on Windows.
+        if sef.device.backend.__module__.endswith("libusb1"):
             check_driver = None
 
             try:

From 035c42558168bfc3d53867a82115ecb917587808 Mon Sep 17 00:00:00 2001
From: Omer Akram <om26er@gmail.com>
Date: Wed, 22 May 2019 17:09:27 +0500
Subject: [PATCH 3/5] Add author

---
 AUTHORS | 1 +
 1 file changed, 1 insertion(+)

diff --git a/AUTHORS b/AUTHORS
index 6000080..f9e4de9 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -20,6 +20,7 @@ Michael Billington
 Michael Elsdörfer
 mrwunderbar666
 Nathan Bookham
+Omer Akram
 Patrick Kanzler
 primax79
 Qian Linfeng

From 7c01a30d6c9c7422bf940659cb7b0c3142be4cc1 Mon Sep 17 00:00:00 2001
From: Omer Akram <om26er@gmail.com>
Date: Wed, 22 May 2019 17:20:15 +0500
Subject: [PATCH 4/5] fix a typo

---
 src/escpos/printer.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/escpos/printer.py b/src/escpos/printer.py
index ed38d4f..b20876b 100644
--- a/src/escpos/printer.py
+++ b/src/escpos/printer.py
@@ -72,7 +72,7 @@ class Usb(Escpos):
         # only libusb1 backend implements the methods is_kernel_driver_active()
         # and detach_kernel_driver(). This change helps enable this
         # library to work on Windows.
-        if sef.device.backend.__module__.endswith("libusb1"):
+        if self.device.backend.__module__.endswith("libusb1"):
             check_driver = None
 
             try:

From 29ef88f5915b0a34ed0fc11e68af7b950872c8eb Mon Sep 17 00:00:00 2001
From: Omer Akram <om26er@gmail.com>
Date: Wed, 22 May 2019 17:25:33 +0500
Subject: [PATCH 5/5] Better comment

---
 src/escpos/printer.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/escpos/printer.py b/src/escpos/printer.py
index b20876b..648b4bb 100644
--- a/src/escpos/printer.py
+++ b/src/escpos/printer.py
@@ -70,8 +70,8 @@ class Usb(Escpos):
 
         # pyusb has three backends: libusb0, libusb1 and openusb but
         # only libusb1 backend implements the methods is_kernel_driver_active()
-        # and detach_kernel_driver(). This change helps enable this
-        # library to work on Windows.
+        # and detach_kernel_driver().
+        # This helps enable this library to work on Windows.
         if self.device.backend.__module__.endswith("libusb1"):
             check_driver = None