REFACTOR style and PEP8, fixes #66
This commit is contained in:
Patrick Kanzler
parent
096445631f
commit
07d8e073ae
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@ -1 +1 @@
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__all__ = ["constants","escpos","exceptions","printer"]
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__all__ = ["constants", "escpos", "exceptions", "printer"]
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@ -1,86 +1,86 @@
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""" ESC/POS Commands (Constants) """
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# Feed control sequences
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CTL_LF = '\x0a' # Print and line feed
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CTL_FF = '\x0c' # Form feed
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CTL_CR = '\x0d' # Carriage return
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CTL_HT = '\x09' # Horizontal tab
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CTL_SET_HT = '\x1b\x44' # Set horizontal tab positions
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CTL_VT = '\x1b\x64\x04' # Vertical tab
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CTL_LF = '\x0a' # Print and line feed
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CTL_FF = '\x0c' # Form feed
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CTL_CR = '\x0d' # Carriage return
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CTL_HT = '\x09' # Horizontal tab
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CTL_SET_HT = '\x1b\x44' # Set horizontal tab positions
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CTL_VT = '\x1b\x64\x04' # Vertical tab
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# Printer hardware
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HW_INIT = '\x1b\x40' # Clear data in buffer and reset modes
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HW_SELECT = '\x1b\x3d\x01' # Printer select
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HW_RESET = '\x1b\x3f\x0a\x00' # Reset printer hardware
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HW_INIT = '\x1b\x40' # Clear data in buffer and reset modes
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HW_SELECT = '\x1b\x3d\x01' # Printer select
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HW_RESET = '\x1b\x3f\x0a\x00' # Reset printer hardware
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# Cash Drawer
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CD_KICK_2 = '\x1b\x70\x00' # Sends a pulse to pin 2 []
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CD_KICK_5 = '\x1b\x70\x01' # Sends a pulse to pin 5 []
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CD_KICK_2 = '\x1b\x70\x00' # Sends a pulse to pin 2 []
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CD_KICK_5 = '\x1b\x70\x01' # Sends a pulse to pin 5 []
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# Paper
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PAPER_FULL_CUT = '\x1d\x56\x00' # Full cut paper
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PAPER_PART_CUT = '\x1d\x56\x01' # Partial cut paper
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PAPER_FULL_CUT = '\x1d\x56\x00' # Full cut paper
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PAPER_PART_CUT = '\x1d\x56\x01' # Partial cut paper
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# Text format
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TXT_NORMAL = '\x1b\x21\x00' # Normal text
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TXT_2HEIGHT = '\x1b\x21\x10' # Double height text
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TXT_2WIDTH = '\x1b\x21\x20' # Double width text
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TXT_4SQUARE = '\x1b\x21\x30' # Quad area text
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TXT_UNDERL_OFF = '\x1b\x2d\x00' # Underline font OFF
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TXT_UNDERL_ON = '\x1b\x2d\x01' # Underline font 1-dot ON
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TXT_UNDERL2_ON = '\x1b\x2d\x02' # Underline font 2-dot ON
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TXT_BOLD_OFF = '\x1b\x45\x00' # Bold font OFF
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TXT_BOLD_ON = '\x1b\x45\x01' # Bold font ON
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TXT_FONT_A = '\x1b\x4d\x00' # Font type A
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TXT_FONT_B = '\x1b\x4d\x01' # Font type B
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TXT_ALIGN_LT = '\x1b\x61\x00' # Left justification
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TXT_ALIGN_CT = '\x1b\x61\x01' # Centering
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TXT_ALIGN_RT = '\x1b\x61\x02' # Right justification
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TXT_NORMAL = '\x1b\x21\x00' # Normal text
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TXT_2HEIGHT = '\x1b\x21\x10' # Double height text
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TXT_2WIDTH = '\x1b\x21\x20' # Double width text
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TXT_4SQUARE = '\x1b\x21\x30' # Quad area text
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TXT_UNDERL_OFF = '\x1b\x2d\x00' # Underline font OFF
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TXT_UNDERL_ON = '\x1b\x2d\x01' # Underline font 1-dot ON
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TXT_UNDERL2_ON = '\x1b\x2d\x02' # Underline font 2-dot ON
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TXT_BOLD_OFF = '\x1b\x45\x00' # Bold font OFF
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TXT_BOLD_ON = '\x1b\x45\x01' # Bold font ON
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TXT_FONT_A = '\x1b\x4d\x00' # Font type A
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TXT_FONT_B = '\x1b\x4d\x01' # Font type B
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TXT_ALIGN_LT = '\x1b\x61\x00' # Left justification
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TXT_ALIGN_CT = '\x1b\x61\x01' # Centering
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TXT_ALIGN_RT = '\x1b\x61\x02' # Right justification
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# Char code table
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CHARCODE_PC437 = '\x1b\x74\x00' # USA: Standard Europe
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CHARCODE_JIS = '\x1b\x74\x01' # Japanese Katakana
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CHARCODE_PC850 = '\x1b\x74\x02' # Multilingual
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CHARCODE_PC860 = '\x1b\x74\x03' # Portuguese
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CHARCODE_PC863 = '\x1b\x74\x04' # Canadian-French
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CHARCODE_PC865 = '\x1b\x74\x05' # Nordic
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CHARCODE_WEU = '\x1b\x74\x06' # Simplified Kanji, Hirakana
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CHARCODE_GREEK = '\x1b\x74\x07' # Simplified Kanji
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CHARCODE_HEBREW = '\x1b\x74\x08' # Simplified Kanji
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CHARCODE_PC1252 = '\x1b\x74\x11' # Western European Windows Code Set
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CHARCODE_PC866 = '\x1b\x74\x12' # Cirillic #2
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CHARCODE_PC852 = '\x1b\x74\x13' # Latin 2
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CHARCODE_PC858 = '\x1b\x74\x14' # Euro
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CHARCODE_THAI42 = '\x1b\x74\x15' # Thai character code 42
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CHARCODE_THAI11 = '\x1b\x74\x16' # Thai character code 11
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CHARCODE_THAI13 = '\x1b\x74\x17' # Thai character code 13
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CHARCODE_THAI14 = '\x1b\x74\x18' # Thai character code 14
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CHARCODE_THAI16 = '\x1b\x74\x19' # Thai character code 16
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CHARCODE_THAI17 = '\x1b\x74\x1a' # Thai character code 17
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CHARCODE_THAI18 = '\x1b\x74\x1b' # Thai character code 18
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CHARCODE_PC437 = '\x1b\x74\x00' # USA: Standard Europe
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CHARCODE_JIS = '\x1b\x74\x01' # Japanese Katakana
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CHARCODE_PC850 = '\x1b\x74\x02' # Multilingual
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CHARCODE_PC860 = '\x1b\x74\x03' # Portuguese
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CHARCODE_PC863 = '\x1b\x74\x04' # Canadian-French
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CHARCODE_PC865 = '\x1b\x74\x05' # Nordic
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CHARCODE_WEU = '\x1b\x74\x06' # Simplified Kanji, Hirakana
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CHARCODE_GREEK = '\x1b\x74\x07' # Simplified Kanji
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CHARCODE_HEBREW = '\x1b\x74\x08' # Simplified Kanji
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CHARCODE_PC1252 = '\x1b\x74\x11' # Western European Windows Code Set
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CHARCODE_PC866 = '\x1b\x74\x12' # Cirillic #2
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CHARCODE_PC852 = '\x1b\x74\x13' # Latin 2
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CHARCODE_PC858 = '\x1b\x74\x14' # Euro
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CHARCODE_THAI42 = '\x1b\x74\x15' # Thai character code 42
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CHARCODE_THAI11 = '\x1b\x74\x16' # Thai character code 11
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CHARCODE_THAI13 = '\x1b\x74\x17' # Thai character code 13
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CHARCODE_THAI14 = '\x1b\x74\x18' # Thai character code 14
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CHARCODE_THAI16 = '\x1b\x74\x19' # Thai character code 16
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CHARCODE_THAI17 = '\x1b\x74\x1a' # Thai character code 17
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CHARCODE_THAI18 = '\x1b\x74\x1b' # Thai character code 18
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# Barcode format
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BARCODE_TXT_OFF = '\x1d\x48\x00' # HRI barcode chars OFF
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BARCODE_TXT_ABV = '\x1d\x48\x01' # HRI barcode chars above
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BARCODE_TXT_BLW = '\x1d\x48\x02' # HRI barcode chars below
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BARCODE_TXT_BTH = '\x1d\x48\x03' # HRI barcode chars both above and below
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BARCODE_FONT_A = '\x1d\x66\x00' # Font type A for HRI barcode chars
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BARCODE_FONT_B = '\x1d\x66\x01' # Font type B for HRI barcode chars
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BARCODE_HEIGHT = '\x1d\x68\x64' # Barcode Height [1-255]
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BARCODE_WIDTH = '\x1d\x77\x03' # Barcode Width [2-6]
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BARCODE_UPC_A = '\x1d\x6b\x00' # Barcode type UPC-A
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BARCODE_UPC_E = '\x1d\x6b\x01' # Barcode type UPC-E
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BARCODE_EAN13 = '\x1d\x6b\x02' # Barcode type EAN13
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BARCODE_EAN8 = '\x1d\x6b\x03' # Barcode type EAN8
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BARCODE_CODE39 = '\x1d\x6b\x04' # Barcode type CODE39
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BARCODE_ITF = '\x1d\x6b\x05' # Barcode type ITF
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BARCODE_NW7 = '\x1d\x6b\x06' # Barcode type NW7
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BARCODE_TXT_OFF = '\x1d\x48\x00' # HRI barcode chars OFF
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BARCODE_TXT_ABV = '\x1d\x48\x01' # HRI barcode chars above
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BARCODE_TXT_BLW = '\x1d\x48\x02' # HRI barcode chars below
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BARCODE_TXT_BTH = '\x1d\x48\x03' # HRI barcode chars both above and below
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BARCODE_FONT_A = '\x1d\x66\x00' # Font type A for HRI barcode chars
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BARCODE_FONT_B = '\x1d\x66\x01' # Font type B for HRI barcode chars
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BARCODE_HEIGHT = '\x1d\x68\x64' # Barcode Height [1-255]
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BARCODE_WIDTH = '\x1d\x77\x03' # Barcode Width [2-6]
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BARCODE_UPC_A = '\x1d\x6b\x00' # Barcode type UPC-A
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BARCODE_UPC_E = '\x1d\x6b\x01' # Barcode type UPC-E
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BARCODE_EAN13 = '\x1d\x6b\x02' # Barcode type EAN13
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BARCODE_EAN8 = '\x1d\x6b\x03' # Barcode type EAN8
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BARCODE_CODE39 = '\x1d\x6b\x04' # Barcode type CODE39
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BARCODE_ITF = '\x1d\x6b\x05' # Barcode type ITF
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BARCODE_NW7 = '\x1d\x6b\x06' # Barcode type NW7
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# Image format
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S_RASTER_N = '\x1d\x76\x30\x00' # Set raster image normal size
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S_RASTER_2W = '\x1d\x76\x30\x01' # Set raster image double width
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S_RASTER_2H = '\x1d\x76\x30\x02' # Set raster image double height
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S_RASTER_Q = '\x1d\x76\x30\x03' # Set raster image quadruple
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S_RASTER_N = '\x1d\x76\x30\x00' # Set raster image normal size
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S_RASTER_2W = '\x1d\x76\x30\x01' # Set raster image double width
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S_RASTER_2H = '\x1d\x76\x30\x02' # Set raster image double height
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S_RASTER_Q = '\x1d\x76\x30\x03' # Set raster image quadruple
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# Printing Density
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PD_N50 = '\x1d\x7c\x00' # Printing Density -50%
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PD_N37 = '\x1d\x7c\x01' # Printing Density -37.5%
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PD_N25 = '\x1d\x7c\x02' # Printing Density -25%
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PD_N12 = '\x1d\x7c\x03' # Printing Density -12.5%
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PD_0 = '\x1d\x7c\x04' # Printing Density 0%
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PD_P50 = '\x1d\x7c\x08' # Printing Density +50%
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PD_P37 = '\x1d\x7c\x07' # Printing Density +37.5%
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PD_P25 = '\x1d\x7c\x06' # Printing Density +25%
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PD_P12 = '\x1d\x7c\x05' # Printing Density +12.5%
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PD_N50 = '\x1d\x7c\x00' # Printing Density -50%
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PD_N37 = '\x1d\x7c\x01' # Printing Density -37.5%
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PD_N25 = '\x1d\x7c\x02' # Printing Density -25%
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PD_N12 = '\x1d\x7c\x03' # Printing Density -12.5%
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PD_0 = '\x1d\x7c\x04' # Printing Density 0%
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PD_P50 = '\x1d\x7c\x08' # Printing Density +50%
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PD_P37 = '\x1d\x7c\x07' # Printing Density +37.5%
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PD_P25 = '\x1d\x7c\x06' # Printing Density +25%
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PD_P12 = '\x1d\x7c\x05' # Printing Density +12.5%
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@ -12,27 +12,26 @@ except ImportError:
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from PIL import Image
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import qrcode
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import time
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from constants import *
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from exceptions import *
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class Escpos(object):
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""" ESC/POS Printer object """
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device = None
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device = None
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def _check_image_size(self, size):
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@staticmethod
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def _check_image_size(size):
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""" Check and fix the size of the image to 32 bits """
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if size % 32 == 0:
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return (0, 0)
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return 0, 0
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else:
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image_border = 32 - (size % 32)
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if (image_border % 2) == 0:
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return (image_border / 2, image_border / 2)
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return image_border / 2, image_border / 2
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else:
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return (image_border / 2, (image_border / 2) + 1)
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return image_border / 2, (image_border / 2) + 1
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def _print_image(self, line, size):
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""" Print formatted image """
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@ -41,12 +40,12 @@ class Escpos(object):
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buffer = ""
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self._raw(S_RASTER_N)
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buffer = "%02X%02X%02X%02X" % (((size[0]/size[1])/8), 0, size[1]&0xff, size[1]>>8)
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buffer = "%02X%02X%02X%02X" % (((size[0]/size[1])/8), 0, size[1] & 0xff, size[1] >> 8)
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self._raw(buffer.decode('hex'))
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buffer = ""
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while i < len(line):
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hex_string = int(line[i:i+8],2)
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hex_string = int(line[i:i+8], 2)
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buffer += "%02X" % hex_string
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i += 8
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cont += 1
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@ -55,19 +54,17 @@ class Escpos(object):
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buffer = ""
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cont = 0
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def _convert_image(self, im):
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""" Parse image and prepare it to a printable format """
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pixels = []
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pixels = []
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pix_line = ""
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im_left = ""
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im_left = ""
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im_right = ""
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switch = 0
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img_size = [ 0, 0 ]
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switch = 0
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img_size = [0, 0]
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if im.size[0] > 512:
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print ("WARNING: Image is wider than 512 and could be truncated at print time ")
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print ("WARNING: Image is wider than 512 and could be truncated at print time ")
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if im.size[1] > 0xffff:
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raise ImageSizeError()
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@ -87,7 +84,7 @@ class Escpos(object):
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im_color = (RGB[0] + RGB[1] + RGB[2])
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im_pattern = "1X0"
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pattern_len = len(im_pattern)
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switch = (switch - 1 ) * (-1)
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switch = (switch - 1) * (-1)
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for x in range(pattern_len):
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if im_color <= (255 * 3 / pattern_len * (x+1)):
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if im_pattern[x] == "X":
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self._print_image(pix_line, img_size)
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def image(self,path_img):
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def image(self, path_img):
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""" Open image file """
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im_open = Image.open(path_img)
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# Remove the alpha channel on transparent images
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if im_open.mode == 'RGBA':
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im_open.load()
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im = Image.new("RGB", im_open.size, (255, 255, 255))
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im.paste(im_open, mask=im_open.split()[3])
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else:
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im = im_open.convert("RGB")
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# Remove the alpha channel on transparent images
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if im_open.mode == 'RGBA':
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im_open.load()
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im = Image.new("RGB", im_open.size, (255, 255, 255))
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im.paste(im_open, mask=im_open.split()[3])
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else:
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im = im_open.convert("RGB")
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# Convert the RGB image in printable image
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self._convert_image(im)
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def qr(self,text):
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def qr(self, text):
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""" Print QR Code for the provided string """
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qr_code = qrcode.QRCode(version=4, box_size=4, border=1)
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qr_code.add_data(text)
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# Convert the RGB image in printable image
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self._convert_image(im)
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def charcode(self,code):
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def charcode(self, code):
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""" Set Character Code Table """
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if code.upper() == "USA":
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self._raw(CHARCODE_PC437)
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@ -184,19 +178,19 @@ class Escpos(object):
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# Align Bar Code()
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self._raw(TXT_ALIGN_CT)
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# Height
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if height >=2 or height <=6:
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if height >= 2 or height <= 6:
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self._raw(BARCODE_HEIGHT)
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else:
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raise BarcodeSizeError()
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# Width
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if width >= 1 or width <=255:
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if width >= 1 or width <= 255:
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self._raw(BARCODE_WIDTH)
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else:
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raise BarcodeSizeError()
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# Font
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if font.upper() == "B":
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self._raw(BARCODE_FONT_B)
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else: # DEFAULT FONT: A
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else: # DEFAULT FONT: A
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self._raw(BARCODE_FONT_A)
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# Position
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if pos.upper() == "OFF":
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@ -228,8 +222,7 @@ class Escpos(object):
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if code:
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self._raw(code)
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else:
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raise exception.BarcodeCodeError()
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raise BarcodeCodeError()
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def text(self, txt):
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""" Print alpha-numeric text """
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@ -238,7 +231,6 @@ class Escpos(object):
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else:
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raise TextError()
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def set(self, align='left', font='a', type='normal', width=1, height=1, density=9):
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""" Set text properties """
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# Width
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@ -251,7 +243,7 @@ class Escpos(object):
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elif width == 2 and height != 2:
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self._raw(TXT_NORMAL)
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self._raw(TXT_2WIDTH)
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else: # DEFAULT SIZE: NORMAL
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else: # DEFAULT SIZE: NORMAL
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||||
self._raw(TXT_NORMAL)
|
||||
# Type
|
||||
if type.upper() == "B":
|
||||
|
|
@ -303,10 +295,9 @@ class Escpos(object):
|
|||
self._raw(PD_P37)
|
||||
elif density == 8:
|
||||
self._raw(PD_P50)
|
||||
else:# DEFAULT: DOES NOTHING
|
||||
else: # DEFAULT: DOES NOTHING
|
||||
pass
|
||||
|
||||
|
||||
def cut(self, mode=''):
|
||||
""" Cut paper """
|
||||
# Fix the size between last line and cut
|
||||
|
|
@ -314,10 +305,9 @@ class Escpos(object):
|
|||
self._raw("\n\n\n\n\n\n")
|
||||
if mode.upper() == "PART":
|
||||
self._raw(PAPER_PART_CUT)
|
||||
else: # DEFAULT MODE: FULL CUT
|
||||
else: # DEFAULT MODE: FULL CUT
|
||||
self._raw(PAPER_FULL_CUT)
|
||||
|
||||
|
||||
def cashdraw(self, pin):
|
||||
""" Send pulse to kick the cash drawer """
|
||||
if pin == 2:
|
||||
|
|
@ -327,7 +317,6 @@ class Escpos(object):
|
|||
else:
|
||||
raise CashDrawerError()
|
||||
|
||||
|
||||
def hw(self, hw):
|
||||
""" Hardware operations """
|
||||
if hw.upper() == "INIT":
|
||||
|
|
@ -336,17 +325,16 @@ class Escpos(object):
|
|||
self._raw(HW_SELECT)
|
||||
elif hw.upper() == "RESET":
|
||||
self._raw(HW_RESET)
|
||||
else: # DEFAULT: DOES NOTHING
|
||||
else: # DEFAULT: DOES NOTHING
|
||||
pass
|
||||
|
||||
|
||||
def control(self, ctl, pos=4):
|
||||
""" Feed control sequences """
|
||||
# Set tab positions
|
||||
if pos < 1 or pos > 16:
|
||||
raise TabError()
|
||||
else:
|
||||
self._raw("".join([CTL_SET_HT,hex(pos)]))
|
||||
self._raw("".join([CTL_SET_HT, hex(pos)]))
|
||||
# Set position
|
||||
if ctl.upper() == "LF":
|
||||
self._raw(CTL_LF)
|
||||
|
|
|
|||
|
|
@ -1,6 +1,5 @@
|
|||
""" ESC/POS Exceptions classes """
|
||||
|
||||
import os
|
||||
|
||||
class Error(Exception):
|
||||
""" Base class for ESC/POS errors """
|
||||
|
|
@ -35,6 +34,7 @@ class BarcodeTypeError(Error):
|
|||
def __str__(self):
|
||||
return "No Barcode type is defined"
|
||||
|
||||
|
||||
class BarcodeSizeError(Error):
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
|
|
@ -44,6 +44,7 @@ class BarcodeSizeError(Error):
|
|||
def __str__(self):
|
||||
return "Barcode size is out of range"
|
||||
|
||||
|
||||
class BarcodeCodeError(Error):
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
|
|
@ -53,6 +54,7 @@ class BarcodeCodeError(Error):
|
|||
def __str__(self):
|
||||
return "Code was not supplied"
|
||||
|
||||
|
||||
class ImageSizeError(Error):
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
|
|
@ -62,6 +64,7 @@ class ImageSizeError(Error):
|
|||
def __str__(self):
|
||||
return "Image height is longer than 255px and can't be printed"
|
||||
|
||||
|
||||
class TextError(Error):
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
|
|
|
|||
|
|
@ -12,9 +12,9 @@ import serial
|
|||
import socket
|
||||
|
||||
from escpos import *
|
||||
from constants import *
|
||||
from exceptions import *
|
||||
|
||||
|
||||
class Usb(Escpos):
|
||||
""" Define USB printer """
|
||||
|
||||
|
|
@ -26,14 +26,13 @@ class Usb(Escpos):
|
|||
@param in_ep : Input end point
|
||||
@param out_ep : Output end point
|
||||
"""
|
||||
self.idVendor = idVendor
|
||||
self.idVendor = idVendor
|
||||
self.idProduct = idProduct
|
||||
self.interface = interface
|
||||
self.in_ep = in_ep
|
||||
self.out_ep = out_ep
|
||||
self.in_ep = in_ep
|
||||
self.out_ep = out_ep
|
||||
self.open()
|
||||
|
||||
|
||||
def open(self):
|
||||
""" Search device on USB tree and set is as escpos device """
|
||||
self.device = usb.core.find(idVendor=self.idVendor, idProduct=self.idProduct)
|
||||
|
|
@ -52,7 +51,7 @@ class Usb(Escpos):
|
|||
self.device.detach_kernel_driver(0)
|
||||
except usb.core.USBError as e:
|
||||
if check_driver is not None:
|
||||
print "Could not detatch kernel driver: %s" % str(e)
|
||||
print "Could not detach kernel driver: %s" % str(e)
|
||||
|
||||
try:
|
||||
self.device.set_configuration()
|
||||
|
|
@ -60,12 +59,10 @@ class Usb(Escpos):
|
|||
except usb.core.USBError as e:
|
||||
print "Could not set configuration: %s" % str(e)
|
||||
|
||||
|
||||
def _raw(self, msg):
|
||||
""" Print any command sent in raw format """
|
||||
self.device.write(self.out_ep, msg, self.interface)
|
||||
|
||||
|
||||
def __del__(self):
|
||||
""" Release USB interface """
|
||||
if self.device:
|
||||
|
|
@ -73,13 +70,12 @@ class Usb(Escpos):
|
|||
self.device = None
|
||||
|
||||
|
||||
|
||||
class Serial(Escpos):
|
||||
""" Define Serial printer """
|
||||
|
||||
def __init__(self, devfile="/dev/ttyS0", baudrate=9600, bytesize=8, timeout=1,
|
||||
parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE,
|
||||
xonxoff=False , dsrdtr=True):
|
||||
xonxoff=False, dsrdtr=True):
|
||||
"""
|
||||
@param devfile : Device file under dev filesystem
|
||||
@param baudrate : Baud rate for serial transmission
|
||||
|
|
@ -91,10 +87,10 @@ class Serial(Escpos):
|
|||
@param xonxoff : Software flow control
|
||||
@param dsrdtr : Hardware flow control (False to enable RTS/CTS)
|
||||
"""
|
||||
self.devfile = devfile
|
||||
self.devfile = devfile
|
||||
self.baudrate = baudrate
|
||||
self.bytesize = bytesize
|
||||
self.timeout = timeout
|
||||
self.timeout = timeout
|
||||
|
||||
self.parity = parity
|
||||
self.stopbits = stopbits
|
||||
|
|
@ -103,7 +99,6 @@ class Serial(Escpos):
|
|||
|
||||
self.open()
|
||||
|
||||
|
||||
def open(self):
|
||||
""" Setup serial port and set is as escpos device """
|
||||
self.device = serial.Serial(port=self.devfile, baudrate=self.baudrate,
|
||||
|
|
@ -116,23 +111,20 @@ class Serial(Escpos):
|
|||
else:
|
||||
print "Unable to open serial printer on: %s" % self.devfile
|
||||
|
||||
|
||||
def _raw(self, msg):
|
||||
""" Print any command sent in raw format """
|
||||
self.device.write(msg)
|
||||
|
||||
|
||||
def __del__(self):
|
||||
""" Close Serial interface """
|
||||
if self.device is not None:
|
||||
self.device.close()
|
||||
|
||||
|
||||
|
||||
class Network(Escpos):
|
||||
""" Define Network printer """
|
||||
|
||||
def __init__(self,host,port=9100):
|
||||
def __init__(self, host, port=9100):
|
||||
"""
|
||||
@param host : Printer's hostname or IP address
|
||||
@param port : Port to write to
|
||||
|
|
@ -141,7 +133,6 @@ class Network(Escpos):
|
|||
self.port = port
|
||||
self.open()
|
||||
|
||||
|
||||
def open(self):
|
||||
""" Open TCP socket and set it as escpos device """
|
||||
self.device = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
||||
|
|
@ -150,18 +141,15 @@ class Network(Escpos):
|
|||
if self.device is None:
|
||||
print "Could not open socket for %s" % self.host
|
||||
|
||||
|
||||
def _raw(self, msg):
|
||||
""" Print any command sent in raw format """
|
||||
self.device.send(msg)
|
||||
|
||||
|
||||
def __del__(self):
|
||||
""" Close TCP connection """
|
||||
self.device.close()
|
||||
|
||||
|
||||
|
||||
class File(Escpos):
|
||||
""" Define Generic file printer """
|
||||
|
||||
|
|
@ -172,7 +160,6 @@ class File(Escpos):
|
|||
self.devfile = devfile
|
||||
self.open()
|
||||
|
||||
|
||||
def open(self):
|
||||
""" Open system file """
|
||||
self.device = open(self.devfile, "wb")
|
||||
|
|
@ -180,11 +167,9 @@ class File(Escpos):
|
|||
if self.device is None:
|
||||
print "Could not open the specified file %s" % self.devfile
|
||||
|
||||
|
||||
def _raw(self, msg):
|
||||
""" Print any command sent in raw format """
|
||||
self.device.write(msg);
|
||||
|
||||
self.device.write(msg)
|
||||
|
||||
def __del__(self):
|
||||
""" Close system file """
|
||||
|
|
|
|||
Loading…
Reference in New Issue