Release v3.0a1 (python-escpos#209 from python-escpos/development)

Release v3.0a1

.gitignore

@@ -23,3 +23,8 @@ src/escpos/version.py
 
 # testing temporary directories
 test/test-cli-output/
+
+# vim swap files
+*.swp
+*.swn
+*.swo

.travis.yml

@@ -29,7 +29,7 @@ matrix:
       env: TOXENV=docs
     - python: 2.7
       env: TOXENV=flake8
-    - python: 3.5
+    - python: 3.6
       env: TOXENV=flake8
   allow_failures:
     - python: 3.6-dev
@@ -44,3 +44,16 @@ notifications:
   email:
     on_success: never
     on_failure: change
+deploy:
+# Github deployment
+  - provider: releases
+    api_key:
+      secure: oiR3r5AIx9ENIRtbUKIxorRx8GMv4BxgVIZcieXbgSTN4DBZdRWdzs1Xxngu/90Xf79G0X+XGxZyXrYN7eFFNp0kUYj8kwZ1aS/dyR88scskumERWi1Hv5WUJrYGrDe7PcjNGsJ2jw0nNnRPKG87Y84aR4lQygyGBSlDcdrOBnBv0sHYJMxRvHSRkGgWpur06QIOGOk4oOipTXR/7E9cg3YQC5nvZAf2QiprwTa8IcOSFlZQPykEVRYSiAgXrgqBYcZzpX0hAGuIBv7DmPI2ORTF+t79Wbhxhnho3gGJleDv7Z96//sf1vQNCG6qOgeIc9ZY08Jm1AwXQoW0p6F1/XcEPxeyPDkXJzlojE9rjYNLCPL4gxb/LESEuUafm0U4JGMsZ6hnsBOw583yTuAdfQuJ9M+QaSyem6OVNkky3+DKAD3z0WJnl9jmGXIXigNSIxD25XhpvY+j9P0XTLBG1GT2Q+wXCIjSYJc2XnYcdgVJcLoxSWk1fKj/KPi7buAWtqwnL3tjeldpMMOZMliPUTWMM14zoGskHztt0JCkAtcotm9AQtvL8eZ2LHLDK/jyLzjv0wAwU5vzSVp14XHLZl7Q0AIoNc20p1EYGa9C/gSPd9CkrWZoG4lMOiAu3tp2PRLVrdXH3ZWSPQq4Ek5MczrUTkmB82XErNbOa8QB1Dw=
+    file: .tox/dist/python-escpos*.zip
+    file_glob: true
+    skip_cleanup: true
+    on:
+      tags: true
+      repo: python-escpos/python-escpos
+      branch: master
+      condition: $TRAVIS_PYTHON_VERSION = "3.5"

CHANGELOG.rst

@@ -2,6 +2,24 @@
 Changelog
 *********
 
+2017-03-29 - Version 3.0a1 - "Headcrash"
+----------------------------------------
+This release is the second alpha release of the new version 3.0. Please
+be aware that the API will still change until v3.0 is released.
+
+changes
+^^^^^^^
+- automatically upload releases to GitHub
+- add environment variable ESCPOS_CAPABILITIES_FILE
+- automatically handle cases where full cut or partial cut is not available
+- add print_and_feed
+
+contributors
+^^^^^^^^^^^^
+- Sam Cheng
+- Patrick Kanzler
+- Dmytro Katyukha
+
 2017-01-31 - Version 3.0a - "Grey Area"
 ---------------------------------------
 This release is the first alpha release of the new version 3.0. Please

codecov.yml

@@ -7,10 +7,6 @@ coverage:
       default:  # status context
         target: auto
         threshold: "1%"
-    patch:
-      default:
-        target: auto
-        threshold: "1%"
   range: "60...100"
 
 comment: off

doc/user/usage.rst

@@ -216,6 +216,32 @@ Here you can download an example, that will print a set of common barcodes:
 
     * :download:`barcode.bin </download/barcode.bin>` by `@mike42 <https://github.com/mike42>`_
 
+Advanced Usage: change capabilities-profile
+-------------------------------------------
+
+Packaged together with the escpos-code is a capabilities-file. This file in
+JSON-format describes the capabilities of different printers. It is developed and hosted in
+`escpos-printer-db <https://github.com/receipt-print-hq/escpos-printer-db>`_.
+
+Certain applications like the usage of `cx_freeze <https://cx-freeze.readthedocs.io>`_ might change the
+packaging structure. This leads to the capabilities-profile not being found.
+In this case you can use the environment-variable `ESCPOS_CAPABILITIES_FILE`.
+The following code is an example.
+
+.. code-block:: shell
+
+   # use packaged capabilities-profile
+   python-escpos cut
+
+   # use capabilities-profile that you have put in /usr/python-escpos
+   export ESCPOS_CAPABILITIES_FILE=/usr/python-escpos/capabilities.json
+   python-escpos cut
+
+   # use packaged file again
+   unset ESCPOS_CAPABILITIES_FILE
+   python-escpos cut
+
+
 Hint: preprocess printing
 -------------------------
 

src/escpos/capabilities.py

@@ -1,10 +1,15 @@
 import re
 import six
-from os import path
+from os import environ, path
 import yaml
 
 # Load external printer database
-with open(path.join(path.dirname(__file__), 'capabilities.json')) as f:
+if 'ESCPOS_CAPABILITIES_FILE' in environ:
+    file_path = environ['ESCPOS_CAPABILITIES_FILE']
+else:
+    file_path = path.join(path.dirname(__file__), 'capabilities.json')
+
+with open(file_path) as f:
     CAPABILITIES = yaml.load(f)
 
 PROFILES = CAPABILITIES['profiles']

src/escpos/cli.py

@@ -100,6 +100,12 @@ def str_to_bool(string):
                 'option_strings': ('--content',),
                 'help': 'Text to print as a qr code',
                 'required': True,
+            },
+            {
+                'option_strings': ('--size',),
+                'help': 'QR code size (1-16) [default:3]',
+                'required': False,
+                'type': int,
             }
         ],
     },

src/escpos/escpos.py

@@ -564,7 +564,7 @@ def line_spacing(self, spacing=None, divisor=180):
 
         self._raw(LINESPACING_FUNCS[divisor] + six.int2byte(spacing))
 
-    def cut(self, mode=''):
+    def cut(self, mode='FULL'):
         """ Cut paper.
 
         Without any arguments the paper will be cut completely. With 'mode=PART' a partial cut will
@@ -573,15 +573,25 @@ def cut(self, mode=''):
 
         .. todo:: Check this function on TM-T88II.
 
-        :param mode: set to 'PART' for a partial cut
+        :param mode: set to 'PART' for a partial cut. default: 'FULL'
+        :raises ValueError: if mode not in ('FULL', 'PART')
         """
-        # Fix the size between last line and cut
-        # TODO: handle this with a line feed
-        self._raw(b"\n\n\n\n\n\n")
-        if mode.upper() == "PART":
-            self._raw(PAPER_PART_CUT)
-        else:  # DEFAULT MODE: FULL CUT
-            self._raw(PAPER_FULL_CUT)
+        self.print_and_feed(6)
+
+        mode = mode.upper()
+        if mode not in ('FULL', 'PART'):
+            raise ValueError("Mode must be one of ('FULL', 'PART')")
+
+        if mode == "PART":
+            if self.profile.supports('paperPartCut'):
+                self._raw(PAPER_PART_CUT)
+            elif self.profile.supports('paperFullCut'):
+                self._raw(PAPER_FULL_CUT)
+        elif mode == "FULL":
+            if self.profile.supports('paperFullCut'):
+                self._raw(PAPER_FULL_CUT)
+            elif self.profile.supports('paperPartCut'):
+                self._raw(PAPER_PART_CUT)
 
     def cashdraw(self, pin):
         """ Send pulse to kick the cash drawer
@@ -620,6 +630,20 @@ def hw(self, hw):
         else:  # DEFAULT: DOES NOTHING
             pass
 
+    def print_and_feed(self, n=1):
+        """ Print data in print buffer and feed *n* lines
+
+            if n not in range (0, 255) then ValueError will be raised
+
+            :param n: number of n to feed. 0 <= n <= 255. default: 1
+            :raises ValueError: if not 0 <= n <= 255
+        """
+        if 0 <= n <= 255:
+            # ESC d n
+            self._raw(ESC + b"d" + six.int2byte(n))
+        else:
+            raise ValueError("n must be betwen 0 and 255")
+
     def control(self, ctl, pos=4):
         """ Feed control sequences
 
@@ -634,11 +658,6 @@ def control(self, ctl, pos=4):
         :param pos: integer between 1 and 16, controls the horizontal tab position
         :raises: :py:exc:`~escpos.exceptions.TabPosError`
         """
-        # Set tab positions
-        if not (1 <= pos <= 16):
-            raise TabPosError()
-        else:
-            self._raw(CTL_SET_HT + six.int2byte(pos))
         # Set position
         if ctl.upper() == "LF":
             self._raw(CTL_LF)
@@ -647,6 +666,12 @@ def control(self, ctl, pos=4):
         elif ctl.upper() == "CR":
             self._raw(CTL_CR)
         elif ctl.upper() == "HT":
+            if not (1 <= pos <= 16):
+                raise TabPosError()
+            else:
+                # Set tab positions
+                self._raw(CTL_SET_HT + six.int2byte(pos))
+
             self._raw(CTL_HT)
         elif ctl.upper() == "VT":
             self._raw(CTL_VT)