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python-escpos
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Reduce many lines of code to a loop

This commit is contained in:
Davis Goglin 2016-03-28 11:16:37 -07:00
parent 1a000d29fd
commit 8101e1ec9f
1 changed files with 354 additions and 229 deletions
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583
escpos/cli.py
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@ -46,9 +46,350 @@ DEMO_FUNCTIONS = {
{'bc': 'GS1 DataBar Truncated', 'code': '0000000000000', 'function_type': 'B'},
{'bc': 'GS1 DataBar Limited', 'code': '0000000000000', 'function_type': 'B'},
{'bc': 'GS1 DataBar Expanded', 'code': '00AAAAAAA', 'function_type': 'B'},
]
],
}
# Used to build the CLI
# A list of dictionaries. Each dict is a CLI argument.
# Keys:
# parser: A dict of args for command_parsers.add_parser
# defaults: A dict of args for subparser.set_defaults
# arguments: A list of dicts of args for subparser.add_argument
ESCPOS_COMMANDS = [
{
'parser': {
'name': 'qr',
'help': 'Print a QR code',
},
'defaults': {
'func': 'qr',
},
'arguments': [
{
'option_strings': ('--text',),
'help': 'Text to print as a qr code',
'required': True,
}
],
},
{
'parser': {
'name': 'barcode',
'help': 'Print a barcode',
},
'defaults': {
'func': 'barcode',
},
'arguments': [
{
'option_strings': ('--code',),
'help': 'Barcode data to print',
'required': True,
},
{
'option_strings': ('--bc',),
'help': 'Barcode format',
'required': True,
},
{
'option_strings': ('--height',),
'help': 'Barcode height in px',
'type': int,
},
{
'option_strings': ('--width',),
'help': 'Barcode width',
'type': int,
},
{
'option_strings': ('--pos',),
'help': 'Label position',
'choices': ['BELOW', 'ABOVE', 'BOTH', 'OFF'],
},
{
'option_strings': ('--font',),
'help': 'Label font',
'choices': ['A', 'B'],
},
{
'option_strings': ('--align_ct',),
'help': 'Align barcode center',
'type': bool,
},
{
'option_strings': ('--function_type',),
'help': 'ESCPOS function type',
'choices': ['A', 'B'],
},
],
},
{
'parser': {
'name': 'text',
'help': 'Print plain text',
},
'defaults': {
'func': 'text',
},
'arguments': [
{
'option_strings': ('--text',),
'help': 'Text to print as a qr code',
'required': True,
}
],
},
{
'parser': {
'name': 'block_text',
'help': 'Print wrapped text',
},
'defaults': {
'func': 'block_text',
},
'arguments': [
{
'option_strings': ('--txt',),
'help': 'block_text to print',
'required': True,
},
{
'option_strings': ('--columns',),
'help': 'Number of columns',
'type': int,
},
],
},
{
'parser': {
'name': 'cut',
'help': 'Cut the paper',
},
'defaults': {
'func': 'cut',
},
'arguments': [
{
'option_strings': ('--mode',),
'help': 'Type of cut',
'choices': ['FULL', 'PART'],
},
],
},
{
'parser': {
'name': 'cashdraw',
'help': 'Kick the cash drawer',
},
'defaults': {
'func': 'cashdraw',
},
'arguments': [
{
'option_strings': ('--pin',),
'help': 'Which PIN to kick',
'choices': [2, 5],
},
],
},
{
'parser': {
'name': 'image',
'help': 'Print an image',
},
'defaults': {
'func': 'image',
},
'arguments': [
{
'option_strings': ('--path_img',),
'help': 'Path to image',
'required': True,
},
],
},
{
'parser': {
'name': 'fullimage',
'help': 'Print a fullimage',
},
'defaults': {
'func': 'fullimage',
},
'arguments': [
{
'option_strings': ('--img',),
'help': 'Path to img',
'required': True,
},
{
'option_strings': ('--max_height',),
'help': 'Max height of image in px',
'type': int,
},
{
'option_strings': ('--width',),
'help': 'Max width of image in px',
'type': int,
},
{
'option_strings': ('--histeq',),
'help': 'Equalize the histrogram',
'type': bool,
},
{
'option_strings': ('--bandsize',),
'help': 'Size of bands to divide into when printing',
'type': int,
},
],
},
{
'parser': {
'name': 'charcode',
'help': 'Set character code table',
},
'defaults': {
'func': 'charcode',
},
'arguments': [
{
'option_strings': ('--code',),
'help': 'Character code',
'required': True,
},
],
},
{
'parser': {
'name': 'set',
'help': 'Set text properties',
},
'defaults': {
'func': 'set',
},
'arguments': [
{
'option_strings': ('--align',),
'help': 'Horizontal alignment',
'choices': ['left', 'center', 'right'],
},
{
'option_strings': ('--font',),
'help': 'Font choice',
'choices': ['left', 'center', 'right'],
},
{
'option_strings': ('--text_type',),
'help': 'Text properties',
'choices': ['B', 'U', 'U2', 'BU', 'BU2', 'NORMAL'],
},
{
'option_strings': ('--width',),
'help': 'Width multiplier',
'type': int,
},
{
'option_strings': ('--height',),
'help': 'Height multiplier',
'type': int,
},
{
'option_strings': ('--density',),
'help': 'Print density',
'type': int,
},
{
'option_strings': ('--invert',),
'help': 'White on black printing',
'type': bool,
},
{
'option_strings': ('--smooth',),
'help': 'Text smoothing. Effective on >: 4x4 text',
'type': bool,
},
{
'option_strings': ('--flip',),
'help': 'Text smoothing. Effective on >: 4x4 text',
'type': bool,
},
],
},
{
'parser': {
'name': 'hw',
'help': 'Hardware operations',
},
'defaults': {
'func': 'hw',
},
'arguments': [
{
'option_strings': ('--hw',),
'help': 'Operation',
'choices': ['INIT', 'SELECT', 'RESET'],
'required': True,
},
],
},
{
'parser': {
'name': 'control',
'help': 'Control sequences',
},
'defaults': {
'func': 'control',
},
'arguments': [
{
'option_strings': ('--ctl',),
'help': 'Control sequence',
'choices': ['LF', 'FF', 'CR', 'HT', 'VT'],
'required': True,
},
{
'option_strings': ('--pos',),
'help': 'Horizontal tab position (1-4)',
'type': int,
},
],
},
{
'parser': {
'name': 'panel_buttons',
'help': 'Controls panel buttons',
},
'defaults': {
'func': 'panel_buttons',
},
'arguments': [
{
'option_strings': ('--enable',),
'help': 'Feed button enabled',
'type': bool,
'required': True,
},
],
},
{
'parser': {
'name': 'raw',
'help': 'Raw data',
},
'defaults': {
'func': '_raw',
},
'arguments': [
{
'option_strings': ('--msg',),
'help': 'Raw data to send',
'required': True,
},
],
},
]
def main():
"""
@ -56,6 +397,8 @@ def main():
line arguments. Called when run from a CLI.
"""
# Load the configuration and defined printer
saved_config = config.Config()
printer = saved_config.printer()
@ -65,239 +408,21 @@ def main():
'file. See documentation for details.',
)
# Everything runs off of a subparser so we can use the format
#cli [subparser] -args
command_subparsers = parser.add_subparsers(
title='ESCPOS Command',
)
# From here on func needs to be a string, since we don't have a printer to work on yet
parser_command_qr = command_subparsers.add_parser('qr', help='Print a QR code')
parser_command_qr.set_defaults(func='qr')
parser_command_qr.add_argument(
'--text',
help='Text to print as a qr code',
required=True
)
parser_command_barcode = command_subparsers.add_parser('barcode', help='Print a barcode')
parser_command_barcode.set_defaults(func='barcode')
parser_command_barcode.add_argument(
'--code',
help='Barcode data to print',
required=True
)
parser_command_barcode.add_argument(
'--bc',
help='Barcode format',
required=True
)
parser_command_barcode.add_argument(
'--height',
help='Barcode height in px',
type=int
)
parser_command_barcode.add_argument(
'--width',
help='Barcode width',
type=int
)
parser_command_barcode.add_argument(
'--pos',
help='Label position',
choices=['BELOW', 'ABOVE', 'BOTH', 'OFF']
)
parser_command_barcode.add_argument(
'--font',
help='Label font',
choices=['A', 'B']
)
parser_command_barcode.add_argument(
'--align_ct',
help='Align barcode center',
type=bool
)
parser_command_barcode.add_argument(
'--function_type',
help='ESCPOS function type',
choices=['A', 'B']
)
parser_command_text = command_subparsers.add_parser('text', help='Print plain text')
parser_command_text.set_defaults(func='text')
parser_command_text.add_argument(
'--txt',
help='Text to print',
required=True
)
parser_command_block_text = command_subparsers.add_parser('block_text',
help='Print wrapped text')
parser_command_block_text.set_defaults(func='block_text')
parser_command_block_text.add_argument(
'--txt',
help='block_text to print',
required=True
)
parser_command_block_text.add_argument(
'--columns',
help='Number of columns',
type=int
)
parser_command_cut = command_subparsers.add_parser('cut', help='Cut the paper')
parser_command_cut.set_defaults(func='cut')
parser_command_cut.add_argument(
'--mode',
help='Type of cut',
choices=['FULL', 'PART']
)
parser_command_cashdraw = command_subparsers.add_parser('cashdraw', help='Kick the cash drawer')
parser_command_cashdraw.set_defaults(func='cashdraw')
parser_command_cashdraw.add_argument(
'--pin',
help='Which PIN to kick',
choices=[2, 5]
)
parser_command_image = command_subparsers.add_parser('image', help='Print an image')
parser_command_image.set_defaults(func='image')
parser_command_image.add_argument(
'--path_img',
help='Path to image',
required=True
)
parser_command_fullimage = command_subparsers.add_parser('fullimage', help='Print an fullimage')
parser_command_fullimage.set_defaults(func='fullimage')
parser_command_fullimage.add_argument(
'--img',
help='Path to img',
required=True
)
parser_command_fullimage.add_argument(
'--max_height',
help='Max height of image in px',
type=int
)
parser_command_fullimage.add_argument(
'--width',
help='Max width of image in px',
type=int
)
parser_command_fullimage.add_argument(
'--histeq',
help='Equalize the histrogram',
type=bool
)
parser_command_fullimage.add_argument(
'--bandsize',
help='Size of bands to divide into when printing',
type=int
)
# Not supported
# parser_command_direct_image = command_subparsers.add_parser('direct_direct_image',
# help='Print an direct_image')
# parser_command_direct_image.set_defaults(func='direct_image')
parser_command_charcode = command_subparsers.add_parser('charcode',
help='Set character code table')
parser_command_charcode.set_defaults(func='charcode')
parser_command_charcode.add_argument(
'--code',
help='Character code',
required=True
)
parser_command_set = command_subparsers.add_parser('set', help='Set text properties')
parser_command_set.set_defaults(func='set')
parser_command_set.add_argument(
'--align',
help='Horizontal alignment',
choices=['left', 'center', 'right']
)
parser_command_set.add_argument(
'--font',
help='Font choice',
choices=['left', 'center', 'right']
)
parser_command_set.add_argument(
'--text_type',
help='Text properties',
choices=['B', 'U', 'U2', 'BU', 'BU2', 'NORMAL']
)
parser_command_set.add_argument(
'--width',
help='Width multiplier',
type=int
)
parser_command_set.add_argument(
'--height',
help='Height multiplier',
type=int
)
parser_command_set.add_argument(
'--density',
help='Print density',
type=int
)
parser_command_set.add_argument(
'--invert',
help='White on black printing',
type=bool
)
parser_command_set.add_argument(
'--smooth',
help='Text smoothing. Effective on >= 4x4 text',
type=bool
)
parser_command_set.add_argument(
'--flip',
help='Text smoothing. Effective on >= 4x4 text',
type=bool
)
parser_command_hw = command_subparsers.add_parser('hw', help='Hardware operations')
parser_command_hw.set_defaults(func='hw')
parser_command_hw.add_argument(
'--hw',
help='Operation',
choices=['INIT', 'SELECT', 'RESET'],
required=True
)
parser_command_control = command_subparsers.add_parser('control', help='Control sequences')
parser_command_control.set_defaults(func='control')
parser_command_control.add_argument(
'--ctl',
help='Control sequence',
choices=['LF', 'FF', 'CR', 'HT', 'VT'],
required=True
)
parser_command_control.add_argument(
'--pos',
help='Horizontal tab position (1-4)',
type=int
)
parser_command_panel_buttons = command_subparsers.add_parser('panel_buttons',
help='Disables panel buttons')
parser_command_panel_buttons.set_defaults(func='panel_buttons')
parser_command_panel_buttons.add_argument(
'--enable',
help='Feed button enabled',
type=bool,
required=True
)
parser_command_raw = command_subparsers.add_parser('raw', help='Raw text')
parser_command_raw.set_defaults(func='_raw')
parser_command_raw.add_argument(
'--msg',
help='Raw data to send',
required=True
)
# Build the ESCPOS command arguments
for command in ESCPOS_COMMANDS:
parser_command = command_subparsers.add_parser(**command['parser'])
parser_command.set_defaults(**command['defaults'])
for argument in command['arguments']:
option_strings = argument.pop('option_strings')
parser_command.add_argument(*option_strings, **argument)
# Build any custom arguments
parser_command_demo = command_subparsers.add_parser('demo',
help='Demonstrates various functions')
parser_command_demo.set_defaults(func='demo')