Experimental communication tools (televex screen + televex print)
https://televex.vvvvvvaria.org/
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95 lines
2.2 KiB
95 lines
2.2 KiB
3 years ago
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import sys, os, re, json
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from datetime import datetime, date
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import html2text
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from escpos import printer
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from tools.asciiWriter.text import make_column
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from tools.asciiWriter.utils import merge, print_lines, make_lines, translate
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def connect():
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# Get the printer's USB initializing code with $ sudo lsbusb
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try:
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lp = printer.Usb(0x4b8,0xe15)
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lp_printer = True
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except:
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lp = None
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lp_printer = False
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return lp, lp_printer
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def database(db):
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if not os.path.exists(db):
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with open(db, 'w') as f:
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f.write(json.dumps({ "printed" : [] }, indent=4))
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return db
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def html2plain(html):
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# remove HTML tags
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txt = re.sub(r'<.*?>', '', html)
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# make line breaks
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# https://git.vvvvvvaria.org/mb/ascii-art-but-with-unicode
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width = 48
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layers = []
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lines, remaining = make_column(txt, line_width=width)
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layers.append(lines)
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merged = merge(width, len(lines), ' ', layers)
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txt = ''
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for line in merged:
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txt += '{}\n'.format(''.join(line))
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return txt
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def update_db(txt, source, db, post=None):
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try:
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items = json.loads(open(db).read())
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except:
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items = { "printed" : [] } # Hmm ...
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# save the publishing date of this post
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if post:
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year = post['published_parsed'][0]
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month = post['published_parsed'][1]
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day = post['published_parsed'][2]
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post_date = date(year, month, day)
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date_str = post_date.strftime('%Y-%m-%d')
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post = None
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else:
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post_date = datetime.now()
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date_str = post_date.strftime('%Y-%m-%d_%H-%M-%S')
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# clean txt from HTML tags
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txt = html2plain(txt)
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# add txt to database
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# and check if this item is new
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item = {
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'source' : source,
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'date' : date_str,
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'printed' : txt
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}
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if item not in items['printed']:
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new_item = True
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with open(db, 'w') as out:
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items['printed'].append(item)
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out.write(json.dumps(items, indent=4))
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out.close()
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else:
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new_item = False
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return new_item, txt
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def print_now(txt, source, db, post=None, lp=None, lp_printer=None):
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# check if this is a new item
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new_item, txt = update_db(txt, source, db, post=post)
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# if this item is new
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# then print!
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if new_item == True:
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if lp_printer == True:
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lp.text(txt)
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lp.cut()
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else:
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# or print in the terminal!
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sys.stderr.write('Printing output to the terminal:\n\n'+txt+'\n\n')
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