mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-11-14 05:36:48 +03:00
258 lines
8.7 KiB
Python
258 lines
8.7 KiB
Python
from helper import unittest, PillowTestCase, hopper
|
|
from PIL import Image, PdfParser
|
|
import io
|
|
import os
|
|
import os.path
|
|
import tempfile
|
|
|
|
|
|
class TestFilePdf(PillowTestCase):
|
|
|
|
def helper_save_as_pdf(self, mode, **kwargs):
|
|
# Arrange
|
|
im = hopper(mode)
|
|
outfile = self.tempfile("temp_" + mode + ".pdf")
|
|
|
|
# Act
|
|
im.save(outfile, **kwargs)
|
|
|
|
# Assert
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
with PdfParser.PdfParser(outfile) as pdf:
|
|
if kwargs.get("append_images", False) or \
|
|
kwargs.get("append", False):
|
|
self.assertGreater(len(pdf.pages), 1)
|
|
else:
|
|
self.assertGreater(len(pdf.pages), 0)
|
|
|
|
return outfile
|
|
|
|
def test_monochrome(self):
|
|
# Arrange
|
|
mode = "1"
|
|
|
|
# Act / Assert
|
|
self.helper_save_as_pdf(mode)
|
|
|
|
def test_greyscale(self):
|
|
# Arrange
|
|
mode = "L"
|
|
|
|
# Act / Assert
|
|
self.helper_save_as_pdf(mode)
|
|
|
|
def test_rgb(self):
|
|
# Arrange
|
|
mode = "RGB"
|
|
|
|
# Act / Assert
|
|
self.helper_save_as_pdf(mode)
|
|
|
|
def test_p_mode(self):
|
|
# Arrange
|
|
mode = "P"
|
|
|
|
# Act / Assert
|
|
self.helper_save_as_pdf(mode)
|
|
|
|
def test_cmyk_mode(self):
|
|
# Arrange
|
|
mode = "CMYK"
|
|
|
|
# Act / Assert
|
|
self.helper_save_as_pdf(mode)
|
|
|
|
def test_unsupported_mode(self):
|
|
im = hopper("LA")
|
|
outfile = self.tempfile("temp_LA.pdf")
|
|
|
|
self.assertRaises(ValueError, im.save, outfile)
|
|
|
|
def test_save_all(self):
|
|
# Single frame image
|
|
self.helper_save_as_pdf("RGB", save_all=True)
|
|
|
|
# Multiframe image
|
|
im = Image.open("Tests/images/dispose_bgnd.gif")
|
|
|
|
outfile = self.tempfile('temp.pdf')
|
|
im.save(outfile, save_all=True)
|
|
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
|
|
# Append images
|
|
ims = [hopper()]
|
|
im.copy().save(outfile, save_all=True, append_images=ims)
|
|
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
|
|
# Test appending using a generator
|
|
def imGenerator(ims):
|
|
for im in ims:
|
|
yield im
|
|
im.save(outfile, save_all=True, append_images=imGenerator(ims))
|
|
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
|
|
# Append JPEG images
|
|
jpeg = Image.open("Tests/images/flower.jpg")
|
|
jpeg.save(outfile, save_all=True, append_images=[jpeg.copy()])
|
|
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
|
|
def test_multiframe_normal_save(self):
|
|
# Test saving a multiframe image without save_all
|
|
im = Image.open("Tests/images/dispose_bgnd.gif")
|
|
|
|
outfile = self.tempfile('temp.pdf')
|
|
im.save(outfile)
|
|
|
|
self.assertTrue(os.path.isfile(outfile))
|
|
self.assertGreater(os.path.getsize(outfile), 0)
|
|
|
|
def test_pdf_open(self):
|
|
# fail on a buffer full of null bytes
|
|
self.assertRaises(
|
|
PdfParser.PdfFormatError,
|
|
PdfParser.PdfParser, buf=bytearray(65536))
|
|
|
|
# make an empty PDF object
|
|
with PdfParser.PdfParser() as empty_pdf:
|
|
self.assertEqual(len(empty_pdf.pages), 0)
|
|
self.assertEqual(len(empty_pdf.info), 0)
|
|
self.assertFalse(empty_pdf.should_close_buf)
|
|
self.assertFalse(empty_pdf.should_close_file)
|
|
|
|
# make a PDF file
|
|
pdf_filename = self.helper_save_as_pdf("RGB")
|
|
|
|
# open the PDF file
|
|
with PdfParser.PdfParser(filename=pdf_filename) as hopper_pdf:
|
|
self.assertEqual(len(hopper_pdf.pages), 1)
|
|
self.assertTrue(hopper_pdf.should_close_buf)
|
|
self.assertTrue(hopper_pdf.should_close_file)
|
|
|
|
# read a PDF file from a buffer with a non-zero offset
|
|
with open(pdf_filename, "rb") as f:
|
|
content = b"xyzzy" + f.read()
|
|
with PdfParser.PdfParser(buf=content, start_offset=5) as hopper_pdf:
|
|
self.assertEqual(len(hopper_pdf.pages), 1)
|
|
self.assertFalse(hopper_pdf.should_close_buf)
|
|
self.assertFalse(hopper_pdf.should_close_file)
|
|
|
|
# read a PDF file from an already open file
|
|
with open(pdf_filename, "rb") as f:
|
|
with PdfParser.PdfParser(f=f) as hopper_pdf:
|
|
self.assertEqual(len(hopper_pdf.pages), 1)
|
|
self.assertTrue(hopper_pdf.should_close_buf)
|
|
self.assertFalse(hopper_pdf.should_close_file)
|
|
|
|
def test_pdf_append_fails_on_nonexistent_file(self):
|
|
im = hopper("RGB")
|
|
temp_dir = tempfile.mkdtemp()
|
|
try:
|
|
self.assertRaises(IOError,
|
|
im.save,
|
|
os.path.join(temp_dir, "nonexistent.pdf"),
|
|
append=True)
|
|
finally:
|
|
os.rmdir(temp_dir)
|
|
|
|
def check_pdf_pages_consistency(self, pdf):
|
|
pages_info = pdf.read_indirect(pdf.pages_ref)
|
|
self.assertNotIn(b"Parent", pages_info)
|
|
self.assertIn(b"Kids", pages_info)
|
|
kids_not_used = pages_info[b"Kids"]
|
|
for page_ref in pdf.pages:
|
|
while True:
|
|
if page_ref in kids_not_used:
|
|
kids_not_used.remove(page_ref)
|
|
page_info = pdf.read_indirect(page_ref)
|
|
self.assertIn(b"Parent", page_info)
|
|
page_ref = page_info[b"Parent"]
|
|
if page_ref == pdf.pages_ref:
|
|
break
|
|
self.assertEqual(pdf.pages_ref, page_info[b"Parent"])
|
|
self.assertEqual(kids_not_used, [])
|
|
|
|
def test_pdf_append(self):
|
|
# make a PDF file
|
|
pdf_filename = self.helper_save_as_pdf("RGB", producer="PdfParser")
|
|
|
|
# open it, check pages and info
|
|
with PdfParser.PdfParser(pdf_filename, mode="r+b") as pdf:
|
|
self.assertEqual(len(pdf.pages), 1)
|
|
self.assertEqual(len(pdf.info), 1)
|
|
self.assertEqual(pdf.info.Producer, "PdfParser")
|
|
self.check_pdf_pages_consistency(pdf)
|
|
|
|
# append some info
|
|
pdf.info.Title = "abc"
|
|
pdf.info.Author = "def"
|
|
pdf.info.Subject = u"ghi\uABCD"
|
|
pdf.info.Keywords = "qw)e\\r(ty"
|
|
pdf.info.Creator = "hopper()"
|
|
pdf.start_writing()
|
|
pdf.write_xref_and_trailer()
|
|
|
|
# open it again, check pages and info again
|
|
with PdfParser.PdfParser(pdf_filename) as pdf:
|
|
self.assertEqual(len(pdf.pages), 1)
|
|
self.assertEqual(len(pdf.info), 6)
|
|
self.assertEqual(pdf.info.Title, "abc")
|
|
self.check_pdf_pages_consistency(pdf)
|
|
|
|
# append two images
|
|
mode_CMYK = hopper("CMYK")
|
|
mode_P = hopper("P")
|
|
mode_CMYK.save(pdf_filename,
|
|
append=True, save_all=True, append_images=[mode_P])
|
|
|
|
# open the PDF again, check pages and info again
|
|
with PdfParser.PdfParser(pdf_filename) as pdf:
|
|
self.assertEqual(len(pdf.pages), 3)
|
|
self.assertEqual(len(pdf.info), 6)
|
|
self.assertEqual(PdfParser.decode_text(pdf.info[b"Title"]), "abc")
|
|
self.assertEqual(pdf.info.Title, "abc")
|
|
self.assertEqual(pdf.info.Producer, "PdfParser")
|
|
self.assertEqual(pdf.info.Keywords, "qw)e\\r(ty")
|
|
self.assertEqual(pdf.info.Subject, u"ghi\uABCD")
|
|
self.check_pdf_pages_consistency(pdf)
|
|
|
|
def test_pdf_info(self):
|
|
# make a PDF file
|
|
pdf_filename = self.helper_save_as_pdf(
|
|
"RGB", title="title", author="author", subject="subject",
|
|
keywords="keywords", creator="creator", producer="producer")
|
|
|
|
# open it, check pages and info
|
|
with PdfParser.PdfParser(pdf_filename) as pdf:
|
|
self.assertEqual(len(pdf.info), 6)
|
|
self.assertEqual(pdf.info.Title, "title")
|
|
self.assertEqual(pdf.info.Author, "author")
|
|
self.assertEqual(pdf.info.Subject, "subject")
|
|
self.assertEqual(pdf.info.Keywords, "keywords")
|
|
self.assertEqual(pdf.info.Creator, "creator")
|
|
self.assertEqual(pdf.info.Producer, "producer")
|
|
self.check_pdf_pages_consistency(pdf)
|
|
|
|
def test_pdf_append_to_bytesio(self):
|
|
im = hopper("RGB")
|
|
f = io.BytesIO()
|
|
im.save(f, format="PDF")
|
|
initial_size = len(f.getvalue())
|
|
self.assertGreater(initial_size, 0)
|
|
im = hopper("P")
|
|
f = io.BytesIO(f.getvalue())
|
|
im.save(f, format="PDF", append=True)
|
|
self.assertGreater(len(f.getvalue()), initial_size)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|