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web_printer.py
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web_printer.py
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import os
import logging
from flask import Flask, request, redirect, url_for, render_template
from werkzeug.utils import secure_filename
from subprocess import run
from datetime import datetime
import subprocess
UPLOAD_FOLDER = 'FILE_STORE'
if not os.path.exists(UPLOAD_FOLDER):
os.makedirs(UPLOAD_FOLDER)
app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
def makeLogger(logFile):
logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
fh = logging.FileHandler(logFile)
logger.addHandler(fh)
return logger
logger = makeLogger('webprinter.log')
def getNumberOfPage(pdfFile):
t = subprocess.run(f"pdfinfo {pdfFile} | awk '/^Pages:/ {{print $2}}'",shell=True,stdout=subprocess.PIPE)#,text=True)
v = t.stdout.strip()
try:
v = v.decode()
except (UnicodeDecodeError, AttributeError):
pass
return v
# check the list of available printers with `lpstat -p -d`
# pass the particular printer with `-P` flag to `lpr`
def printFile(file,pages,orientation,per_page):
# return 0
command = ['lpr',file,'-o', 'fit-to-page', '-o', f'number-up={per_page}', '-P', 'HP-ColorLaserJet-M153-M154']
#^ Auto fit to page, provide custom scale later
if pages:
command.extend(['-o',f'page-ranges={pages}'])
if orientation=='Landscape':
command.extend(['-o','orientation-requested=4'])
ret = run(command)
return ret.returncode
@app.route('/', methods=['GET', 'POST'])
def upload_file():
retCodes = []
if request.method == 'POST':
try:
pages = request.form.get('pages')
ornt = request.form.get('orientation')
per_page = request.form.get('perpage')
for file in request.files.getlist('file'):
if not file or file.filename == '':
return render_template('out.html',data="No file attached")
filename = secure_filename(file.filename)
newpath = os.path.join(app.config['UPLOAD_FOLDER'], filename)
file.save(newpath)
# print(newpath)
# log things
pg = getNumberOfPage(newpath)
txt = f"[{datetime.now().strftime('%I:%M:%S %p %d-%m-%Y')}] - File: {file}, Total No. of pages: {pg} "
if pages: txt += f"Pages to print: {pages} "
if per_page: txt += f"Per page: {per_page}"
logger.info(txt)
ret = printFile(newpath,pages,ornt,per_page)
retCodes.append(ret)
if all(retCodes)==0:
txt = "Print job submitted successfully"
else:
txt = "Unable to submit print job"
except Exception as e:
print(e)
txt = "Unable to submit print job"
return render_template('out.html',data=txt)
return render_template('index.html')
if __name__ == '__main__':
# from waitress import serve
# serve(app,host='0.0.0.0',port=8080)
# gunicorn -w 4 'web_printer:app' -b '0.0.0.0:8080'
app.run(host='0.0.0.0', port=8080,debug=True)