def is_alive():
"""
Test if printer is connected
"""
params = dict(request.params)
logger.debug('Testing printer connection....')
result = 'ok'
try:
printer.device()
except:
result = 'no'
logger.debug('params: %s' % str(params))
# Getting jquery id
jquery = params['jsonp']
answer = '%s({"result": "%s"});' % (jquery, result)
# Set response as json
response.headers['Content-type'] = 'application/json'
return answer
def open_cashbox():
"""
Open the cash box
"""
logger.info('open_cashbox')
try:
device = printer.device()
device.open_cashbox()
except (SystemExit, KeyboardInterrupt):
raise
except Exception:
logger.error('Failed to open the cashbox', exc_info=True)
return
def do_print(receipt):
# Import configuration
from proxypos.proxypos import config
import copy
# Process receipt and split content if needed
logger.debug('Max Lines configuration: %s',
str(config.get('receipt.maxLines')))
receipts = []
if (config.get('receipt.maxLines') > 0 and
len(receipt['orderlines']) > config.get('receipt.maxLines')):
logger.debug('Spliting %s', receipt['orderlines'])
# Split orderlines in chunks
chunks = _chunks(receipt['orderlines'], config.get('receipt.maxLines'))
# Process each chunk and create new receipts
for chunk in chunks:
tmpreceipt = copy.deepcopy(receipt)
# Replacer orderlines with current chunk
tmpreceipt['orderlines'] = chunk
# Recalculate total for this chunk
tmpreceipt['discount'] = _total(chunk, 'discount')
tmpreceipt['total_without_tax'] = _total(chunk, 'price_without_tax')
tmpreceipt['total_with_tax'] = _total(chunk, 'price_with_tax')
receipts.append(tmpreceipt)
else:
receipts.append(receipt)
# Here the receipts are actually printed
for receipt in receipts:
try:
logger.info('Printing receipt %s', str(receipt))
device = printer.device()
device.print_receipt(receipt)
if config.get('receipt.cutPaper'):
device.lineFeedCut(1, True)
except Exception:
logger.error('Failed to print receipt', exc_info=True)