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Worst scripts in history: generate ical invite from Comboios de Portugal PDF ticket with two trips
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# Requires pdfminer, icalendar | |
# both are easy_install'able | |
import itertools, re | |
from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter | |
from pdfminer.converter import TextConverter | |
from pdfminer.layout import LAParams | |
from pdfminer.pdfpage import PDFPage | |
from cStringIO import StringIO | |
from datetime import date, time, datetime, timedelta | |
from icalendar import Calendar, Event | |
def convert_pdf_to_txt(path): | |
rsrcmgr = PDFResourceManager() | |
retstr = StringIO() | |
codec = 'utf-8' | |
laparams = LAParams() | |
device = TextConverter(rsrcmgr, retstr, codec=codec, laparams=laparams) | |
fp = file(path, 'rb') | |
interpreter = PDFPageInterpreter(rsrcmgr, device) | |
password = "" | |
maxpages = 0 | |
caching = True | |
pagenos=set() | |
for page in PDFPage.get_pages(fp, pagenos, maxpages=maxpages, password=password,caching=caching, check_extractable=True): | |
interpreter.process_page(page) | |
fp.close() | |
device.close() | |
str = retstr.getvalue() | |
retstr.close() | |
return str | |
def gen_ical_from_file(filename, output_filename="invite.ical"): | |
result = convert_pdf_to_txt(filename).split("\n") | |
dates = list(filter(lambda x : x.startswith("Data: "), result)) | |
dates = list(date(*(int(i) for i in d.replace("Data: ","").split("-"))) for d in dates) | |
times_and_notes = list(itertools.dropwhile(lambda x: not x.startswith("Volta:"), | |
itertools.takewhile(lambda x: "Bilhete de Identidade" not in x, result)))[2:-3] | |
times_and_notes = times_and_notes[:3], times_and_notes[-3:] | |
times = list(list(re.findall("\d\d:\d\d", t ) | |
for t in filter(lambda x: x.startswith("Partida:"), leg))[0][0] | |
for leg in times_and_notes) | |
times = list(time(*(int(i,10) for i in t.split(":"))) for t in times) | |
cal = Calendar() | |
for trip_date,trip_time,notes in zip(dates, times, times_and_notes): | |
dt = datetime.combine(trip_date, trip_time) | |
evt = Event() | |
evt.add("summary", notes[0]) | |
evt.add("dtstart", dt) | |
evt.add("dtend", dt+timedelta(hours=3)) | |
evt.add("description", "\n".join(notes)) | |
cal.add_component(evt) | |
with file(output_filename,"wb") as output: | |
output.write(cal.to_ical()) | |
print("Wrote ical to "+output_filename) | |
if __name__=="__main__": | |
import sys, os.path | |
output_filename = "invite.ical" | |
if(len(sys.argv) == 1): raise Exception("Must be called with pdf filepath") | |
if(len(sys.argv) == 3): output_filename = sys.argv[2] | |
if(not os.path.exists(sys.argv[1])): raise Exception("File "+sys.argv[1]+" does not exist") | |
gen_ical_from_file(sys.argv[1], output_filename) |
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