def main():
filename = pathlib.Path(PDF_FILE_IN)
password = '******'
with Pdf.open(filename) as pdf:
filename_encrypted = filename.parents[
0] / f"{filename.stem}_encrypted.pdf"
pdf.save(filename_encrypted,
encryption=Encryption(user=password, owner=password))
def compile_all(exam, subtitle, out, do_twice, email, exam_type, semester,
deadline):
"""
Compile individualized PDFs for the specified exam.
Exam must have been deployed first.
"""
if not out:
out = "out/latex/" + exam
pathlib.Path(out).mkdir(parents=True, exist_ok=True)
exam_data = get_exam(exam=exam)
password = exam_data.pop("secret")[:-1]
print(password)
exam_str = json.dumps(exam_data)
roster = get_roster(exam=exam)
if email:
roster = [line_info for line_info in roster if line_info[0] == email]
if len(roster) == 0:
if deadline:
roster = [(email, deadline)]
else:
raise ValueError("Email does not exist in the roster!")
for email, deadline in roster:
if not deadline:
continue
exam_data = json.loads(exam_str)
scramble(email, exam_data)
deadline_utc = datetime.utcfromtimestamp(int(deadline))
deadline_pst = pytz.utc.localize(deadline_utc).astimezone(
pytz.timezone("America/Los_Angeles"))
deadline_string = deadline_pst.strftime("%I:%M%p")
with render_latex(
exam_data,
{
"emailaddress": sanitize_email(email),
"deadline": deadline_string,
"coursecode": prettify(exam.split("-")[0]),
"description": subtitle,
"examtype": exam_type,
"semester": semester,
},
do_twice=do_twice,
) as pdf:
pdf = Pdf.open(BytesIO(pdf))
pdf.save(
os.path.join(
out, "exam_" + email.replace("@", "_").replace(".", "_") +
".pdf"),
encryption=Encryption(owner=password, user=password),
)
pdf.close()
def protegendo_pdf_senha():
with Pdf.open('PDF_Exemplo4.pdf') as pdf:
restricoes = Permissions(extract=False,
print_highres=False,
modify_form=False)
pdf.save('PDF_protegido_com_senha.pdf',
encryption=Encryption(user='******',
allow=restricoes,
owner='senha'))
pdf.close()
def encryptFile(filename, password):
try:
filename_not_encrypted = filename[:-4]+'.pdf'
filename_encrypted = filename.strip('.pdf')+'_encrypted.pdf'
pdf = Pdf.open(filename_not_encrypted)
pdf.save(filename_encrypted, encryption=Encryption(
owner="base_password_to_open_books", user=password, R=4))
pdf.close()
return True
except Exception as e:
print("Already encrypted file")
return False
if __name__ == '__main__':
# images path(folder)
image_path = ''
# pdf file name without suffix
file_name = ''
images = [
os.path.join(image_path, filename)
for filename in os.listdir(image_path)
]
images = natsorted(images, key=take_filename)
image_list = []
for image in images:
print(image)
image_list.append(Image.open(image).convert('RGB'))
if not os.path.exists('tmp'):
os.makedirs('tmp')
image_list[0].save(f'tmp/{file_name}.pdf',
save_all=True,
append_images=image_list[1:])
with Pdf.open(f'tmp/{file_name}.pdf') as pdf:
# owner: owner password
# user: view password
pdf.save(f'{file_name}.pdf',
encryption=Encryption(owner='owner-pwd', user='******'))
os.remove(f'tmp/{file_name}.pdf')