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test_pdf.py
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test_pdf.py
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"""
weasyprint.tests.test_pdf
-------------------------
Test PDF-related code, including metadata, bookmarks and hyperlinks.
"""
import hashlib
import io
import os
import re
from codecs import BOM_UTF16_BE
import pytest
from weasyprint import Attachment
from weasyprint.urls import path2url
from .testing_utils import (
FakeHTML, assert_no_logs, capture_logs, resource_filename)
# Top and right positions in points, rounded to the default float precision of
# 6 digits, a rendered by pydyf
TOP = round(297 * 72 / 25.4, 6)
RIGHT = round(210 * 72 / 25.4, 6)
@assert_no_logs
@pytest.mark.parametrize('zoom', (1, 1.5, 0.5))
def test_page_size_zoom(zoom):
pdf = FakeHTML(string='<style>@page{size:3in 4in').write_pdf(zoom=zoom)
assert '/MediaBox [ 0 0 {} {} ]'.format(
int(216 * zoom), int(288 * zoom)).encode('ascii') in pdf
@assert_no_logs
def test_bookmarks_1():
pdf = FakeHTML(string='''
<h1>a</h1> #
<h4>b</h4> ####
<h3>c</h3> ###
<h2>d</h2> ##
<h1>e</h1> #
''').write_pdf()
# a
# |_ b
# |_ c
# L_ d
# e
assert re.findall(b'/Count ([0-9-]*)', pdf)[-1] == b'5'
assert re.findall(b'/Title \\((.*)\\)', pdf) == [
b'a', b'b', b'c', b'd', b'e']
@assert_no_logs
def test_bookmarks_2():
pdf = FakeHTML(string='<body>').write_pdf()
assert b'Outlines' not in pdf
@assert_no_logs
def test_bookmarks_3():
pdf = FakeHTML(string='<h1>a nbsp…</h1>').write_pdf()
assert re.findall(b'/Title <(.*)>', pdf) == [
b'feff006100a0006e0062007300702026']
@assert_no_logs
def test_bookmarks_4():
pdf = FakeHTML(string='''
<style>
* { height: 90pt; margin: 0 0 10pt 0 }
</style>
<h1>1</h1>
<h1>2</h1>
<h2 style="position: relative; left: 20pt">3</h2>
<h2>4</h2>
<h3>5</h3>
<span style="display: block; page-break-before: always"></span>
<h2>6</h2>
<h1>7</h1>
<h2>8</h2>
<h3>9</h3>
<h1>10</h1>
<h2>11</h2>
''').write_pdf()
# 1
# 2
# |_ 3
# |_ 4
# | L_ 5
# L_ 6
# 7
# L_ 8
# L_ 9
# 10
# L_ 11
assert re.findall(b'/Title \\((.*)\\)', pdf) == [
str(i).encode('ascii') for i in range(1, 12)]
counts = re.findall(b'/Count ([0-9-]*)', pdf)
counts.pop(0) # Page count
outlines = counts.pop()
assert outlines == b'11'
assert counts == [
b'0', b'4', b'0', b'1', b'0', b'0', b'2', b'1', b'0', b'1', b'0']
@assert_no_logs
def test_bookmarks_5():
pdf = FakeHTML(string='''
<h2>1</h2> level 1
<h4>2</h4> level 2
<h2>3</h2> level 1
<h3>4</h3> level 2
<h4>5</h4> level 3
''').write_pdf()
# 1
# L_ 2
# 3
# L_ 4
# L_ 5
assert re.findall(b'/Title \\((.*)\\)', pdf) == [
str(i).encode('ascii') for i in range(1, 6)]
counts = re.findall(b'/Count ([0-9-]*)', pdf)
counts.pop(0) # Page count
outlines = counts.pop()
assert outlines == b'5'
assert counts == [b'1', b'0', b'2', b'1', b'0']
@assert_no_logs
def test_bookmarks_6():
pdf = FakeHTML(string='''
<h2>1</h2> h2 level 1
<h4>2</h4> h4 level 2
<h3>3</h3> h3 level 2
<h5>4</h5> h5 level 3
<h1>5</h1> h1 level 1
<h2>6</h2> h2 level 2
<h2>7</h2> h2 level 2
<h4>8</h4> h4 level 3
<h1>9</h1> h1 level 1
''').write_pdf()
# 1
# |_ 2
# L_ 3
# L_ 4
# 5
# |_ 6
# L_ 7
# L_ 8
# 9
assert re.findall(b'/Title \\((.*)\\)', pdf) == [
str(i).encode('ascii') for i in range(1, 10)]
counts = re.findall(b'/Count ([0-9-]*)', pdf)
counts.pop(0) # Page count
outlines = counts.pop()
assert outlines == b'9'
assert counts == [b'3', b'0', b'1', b'0', b'3', b'0', b'1', b'0', b'0']
@assert_no_logs
def test_bookmarks_7():
# Reference for the next test. zoom=1
pdf = FakeHTML(string='<h2>a</h2>').write_pdf()
assert re.findall(b'/Title \\((.*)\\)', pdf) == [b'a']
dest, = re.findall(b'/Dest \\[(.*)\\]', pdf)
y = round(float(dest.strip().split()[-2]))
pdf = FakeHTML(string='<h2>a</h2>').write_pdf(zoom=1.5)
assert re.findall(b'/Title \\((.*)\\)', pdf) == [b'a']
dest, = re.findall(b'/Dest \\[(.*)\\]', pdf)
assert round(float(dest.strip().split()[-2])) == 1.5 * y
@assert_no_logs
def test_bookmarks_8():
pdf = FakeHTML(string='''
<h1>a</h1>
<h2>b</h2>
<h3>c</h3>
<h2 style="bookmark-state: closed">d</h2>
<h3>e</h3>
<h4>f</h4>
<h1>g</h1>
''').write_pdf()
# a
# |_ b
# | |_ c
# |_ d (closed)
# | |_ e
# | |_ f
# g
assert re.findall(b'/Title \\((.*)\\)', pdf) == [
b'a', b'b', b'c', b'd', b'e', b'f', b'g']
counts = re.findall(b'/Count ([0-9-]*)', pdf)
counts.pop(0) # Page count
outlines = counts.pop()
assert outlines == b'5'
assert counts == [b'3', b'1', b'0', b'-2', b'1', b'0', b'0']
@assert_no_logs
def test_bookmarks_9():
pdf = FakeHTML(string='''
<h1 style="bookmark-label: 'h1 on page ' counter(page)">a</h1>
''').write_pdf()
counts = re.findall(b'/Count ([0-9-]*)', pdf)
outlines = counts.pop()
assert outlines == b'1'
assert re.findall(b'/Title \\((.*)\\)', pdf) == [b'h1 on page 1']
@assert_no_logs
def test_bookmarks_10():
pdf = FakeHTML(string='''
<style>
div:before, div:after {
content: '';
bookmark-level: 1;
bookmark-label: 'x';
}
</style>
<div>a</div>
''').write_pdf()
# x
# x
counts = re.findall(b'/Count ([0-9-]*)', pdf)
outlines = counts.pop()
assert outlines == b'2'
assert re.findall(b'/Title \\((.*)\\)', pdf) == [b'x', b'x']
@assert_no_logs
def test_bookmarks_11():
pdf = FakeHTML(string='''
<div style="display:inline; white-space:pre;
bookmark-level:1; bookmark-label:'a'">
a
a
a
</div>
<div style="bookmark-level:1; bookmark-label:'b'">
<div>b</div>
<div style="break-before:always">c</div>
</div>
''').write_pdf()
# a
# b
counts = re.findall(b'/Count ([0-9-]*)', pdf)
outlines = counts.pop()
assert outlines == b'2'
assert re.findall(b'/Title \\((.*)\\)', pdf) == [b'a', b'b']
@assert_no_logs
def test_bookmarks_12():
pdf = FakeHTML(string='''
<div style="bookmark-level:1; bookmark-label:contents">a</div>
''').write_pdf()
# a
counts = re.findall(b'/Count ([0-9-]*)', pdf)
outlines = counts.pop()
assert outlines == b'1'
assert re.findall(b'/Title \\((.*)\\)', pdf) == [b'a']
@assert_no_logs
def test_bookmarks_13():
pdf = FakeHTML(string='''
<div style="bookmark-level:1; bookmark-label:contents;
text-transform:uppercase">a</div>
''').write_pdf()
# a
counts = re.findall(b'/Count ([0-9-]*)', pdf)
outlines = counts.pop()
assert outlines == b'1'
assert re.findall(b'/Title \\((.*)\\)', pdf) == [b'a']
@assert_no_logs
def test_bookmarks_14():
pdf = FakeHTML(string='''
<h1>a</h1>
<h1> b c d </h1>
<h1> e
f </h1>
<h1> g <span> h </span> i </h1>
''').write_pdf()
# a
# |_ b
# |_ c
# L_ d
# e
assert re.findall(b'/Count ([0-9-]*)', pdf)[-1] == b'4'
assert re.findall(b'/Title \\((.*)\\)', pdf) == [
b'a', b'b c d', b'e f', b'g h i']
@assert_no_logs
def test_links_none():
pdf = FakeHTML(string='<body>').write_pdf()
assert b'Annots' not in pdf
@assert_no_logs
def test_links():
pdf = FakeHTML(string='''
<style>
body { margin: 0; font-size: 10pt; line-height: 2 }
p { display: block; height: 90pt; margin: 0 0 10pt 0 }
img { width: 30pt; vertical-align: top }
</style>
<p><a href="http://weasyprint.org"><img src=pattern.png></a></p>
<p style="padding: 0 10pt"><a
href="#lipsum"><img style="border: solid 1pt"
src=pattern.png></a></p>
<p id=hello>Hello, World</p>
<p id=lipsum>
<a style="display: block; page-break-before: always; height: 30pt"
href="#hel%6Co"></a>a
</p>
''', base_url=resource_filename('<inline HTML>')).write_pdf()
uris = re.findall(b'/URI \\((.*)\\)', pdf)
types = re.findall(b'/S (.*)', pdf)
subtypes = re.findall(b'/Subtype (.*)', pdf)
rects = [
[float(number) for number in match.split()] for match in re.findall(
b'/Rect \\[ ([\\d\\.]+ [\\d\\.]+ [\\d\\.]+ [\\d\\.]+) \\]', pdf)]
# 30pt wide (like the image), 20pt high (like line-height)
assert uris.pop(0) == b'http://weasyprint.org'
assert subtypes.pop(0) == b'/Link'
assert types.pop(0) == b'/URI'
assert rects.pop(0) == [0, TOP, 30, TOP - 20]
# The image itself: 30*30pt
assert uris.pop(0) == b'http://weasyprint.org'
assert subtypes.pop(0) == b'/Link'
assert types.pop(0) == b'/URI'
assert rects.pop(0) == [0, TOP, 30, TOP - 30]
# 32pt wide (image + 2 * 1pt of border), 20pt high
assert subtypes.pop(0) == b'/Link'
assert b'/Dest (lipsum)' in pdf
link = re.search(
b'\\(lipsum\\) \\[ \\d+ 0 R /XYZ ([\\d\\.]+ [\\d\\.]+ [\\d\\.]+) ]',
pdf).group(1)
assert [float(number) for number in link.split()] == [0, TOP, 0]
assert rects.pop(0) == [10, TOP - 100, 10 + 32, TOP - 100 - 20]
# The image itself: 32*32pt
assert subtypes.pop(0) == b'/Link'
assert rects.pop(0) == [10, TOP - 100, 10 + 32, TOP - 100 - 32]
# 100% wide (block), 30pt high
assert subtypes.pop(0) == b'/Link'
assert b'/Dest (hello)' in pdf
link = re.search(
b'\\(hello\\) \\[ \\d+ 0 R /XYZ ([\\d\\.]+ [\\d\\.]+ [\\d\\.]+) ]',
pdf).group(1)
assert [float(number) for number in link.split()] == [0, TOP - 200, 0]
assert rects.pop(0) == [0, TOP, RIGHT, TOP - 30]
@assert_no_logs
def test_sorted_links():
# Regression test for https://github.com/Kozea/WeasyPrint/issues/1352
pdf = FakeHTML(string='''
<p id="zzz">zzz</p>
<p id="aaa">aaa</p>
<a href="#zzz">z</a>
<a href="#aaa">a</a>
''', base_url=resource_filename('<inline HTML>')).write_pdf()
assert b'(zzz) [' in pdf.split(b'(aaa) [')[-1]
@assert_no_logs
def test_relative_links_no_height():
# 100% wide (block), 0pt high
pdf = FakeHTML(
string='<a href="../lipsum" style="display: block"></a>a',
base_url='http://weasyprint.org/foo/bar/').write_pdf()
assert b'/S /URI\n/URI (http://weasyprint.org/foo/lipsum)'
assert f'/Rect [ 0 {TOP} {RIGHT} {TOP} ]'.encode('ascii') in pdf
@assert_no_logs
def test_relative_links_missing_base():
# Relative URI reference without a base URI
pdf = FakeHTML(
string='<a href="../lipsum" style="display: block"></a>a',
base_url=None).write_pdf()
assert b'/S /URI\n/URI (../lipsum)'
assert f'/Rect [ 0 {TOP} {RIGHT} {TOP} ]'.encode('ascii') in pdf
@assert_no_logs
def test_relative_links_missing_base_link():
# Relative URI reference without a base URI: not supported for -weasy-link
with capture_logs() as logs:
pdf = FakeHTML(
string='<div style="-weasy-link: url(../lipsum)">',
base_url=None).write_pdf()
assert b'/Annots' not in pdf
assert len(logs) == 1
assert 'WARNING: Ignored `-weasy-link: url(../lipsum)`' in logs[0]
assert 'Relative URI reference without a base URI' in logs[0]
@assert_no_logs
def test_relative_links_internal():
# Internal URI reference without a base URI: OK
pdf = FakeHTML(
string='<a href="#lipsum" id="lipsum" style="display: block"></a>a',
base_url=None).write_pdf()
assert b'/Dest (lipsum)' in pdf
link = re.search(
b'\\(lipsum\\) \\[ \\d+ 0 R /XYZ ([\\d\\.]+ [\\d\\.]+ [\\d\\.]+) ]',
pdf).group(1)
assert [float(number) for number in link.split()] == [0, TOP, 0]
rect = re.search(
b'/Rect \\[ ([\\d\\.]+ [\\d\\.]+ [\\d\\.]+ [\\d\\.]+) \\]',
pdf).group(1)
assert [float(number) for number in rect.split()] == [0, TOP, RIGHT, TOP]
@assert_no_logs
def test_relative_links_anchors():
pdf = FakeHTML(
string='<div style="-weasy-link: url(#lipsum)" id="lipsum"></div>a',
base_url=None).write_pdf()
assert b'/Dest (lipsum)' in pdf
link = re.search(
b'\\(lipsum\\) \\[ \\d+ 0 R /XYZ ([\\d\\.]+ [\\d\\.]+ [\\d\\.]+) ]',
pdf).group(1)
assert [float(number) for number in link.split()] == [0, TOP, 0]
rect = re.search(
b'/Rect \\[ ([\\d\\.]+ [\\d\\.]+ [\\d\\.]+ [\\d\\.]+) \\]',
pdf).group(1)
assert [float(number) for number in rect.split()] == [0, TOP, RIGHT, TOP]
@assert_no_logs
def test_relative_links_different_base():
pdf = FakeHTML(
string='<a href="/test/lipsum"></a>a',
base_url='http://weasyprint.org/foo/bar/').write_pdf()
assert b'http://weasyprint.org/test/lipsum' in pdf
@assert_no_logs
def test_relative_links_same_base():
pdf = FakeHTML(
string='<a id="test" href="/foo/bar/#test"></a>a',
base_url='http://weasyprint.org/foo/bar/').write_pdf()
assert b'/Dest (test)' in pdf
@assert_no_logs
def test_missing_links():
with capture_logs() as logs:
pdf = FakeHTML(string='''
<style> a { display: block; height: 15pt } </style>
<a href="#lipsum"></a>
<a href="#missing" id="lipsum"></a>
<a href=""></a>a
''', base_url=None).write_pdf()
assert b'/Dest (lipsum)' in pdf
assert len(logs) == 1
link = re.search(
b'\\(lipsum\\) \\[ \\d+ 0 R /XYZ ([\\d\\.]+ [\\d\\.]+ [\\d\\.]+) ]',
pdf).group(1)
assert [float(number) for number in link.split()] == [0, TOP - 15, 0]
rect = re.search(
b'/Rect \\[ ([\\d\\.]+ [\\d\\.]+ [\\d\\.]+ [\\d\\.]+) \\]',
pdf).group(1)
assert [float(number) for number in rect.split()] == [
0, TOP, RIGHT, TOP - 15]
assert 'ERROR: No anchor #missing for internal URI reference' in logs[0]
@assert_no_logs
def test_embed_gif():
assert b'/Filter /DCTDecode' not in FakeHTML(
base_url=resource_filename('dummy.html'),
string='<img src="pattern.gif">').write_pdf()
@assert_no_logs
def test_embed_jpeg():
# JPEG-encoded image, embedded in PDF:
assert b'/Filter /DCTDecode' in FakeHTML(
base_url=resource_filename('dummy.html'),
string='<img src="blue.jpg">').write_pdf()
@assert_no_logs
def test_embed_image_once():
# Image repeated multiple times, embedded once
assert FakeHTML(
base_url=resource_filename('dummy.html'),
string='''
<img src="blue.jpg">
<div style="background: url(blue.jpg)"></div>
<img src="blue.jpg">
<div style="background: url(blue.jpg) no-repeat"></div>
''').write_pdf().count(b'/Filter /DCTDecode') == 1
@assert_no_logs
def test_document_info():
pdf = FakeHTML(string='''
<meta name=author content="I Me & Myself">
<title>Test document</title>
<h1>Another title</h1>
<meta name=generator content="Human after all">
<meta name=keywords content="html ,\tcss,
pdf,css">
<meta name=description content="Blah… ">
<meta name=dcterms.created content=2011-04-21T23:00:00Z>
<meta name=dcterms.modified content=2013-07-21T23:46+01:00>
''').write_pdf()
assert b'/Author (I Me & Myself)' in pdf
assert b'/Title (Test document)' in pdf
assert (
b'/Creator <feff00480075006d0061006e00a00061'
b'006600740065007200a00061006c006c>') in pdf
assert b'/Keywords (html, css, pdf)' in pdf
assert b'/Subject <feff0042006c0061006820260020>' in pdf
assert b'/CreationDate (20110421230000Z)' in pdf
assert b"/ModDate (20130721234600+01'00)" in pdf
@assert_no_logs
def test_embedded_files_attachments(tmpdir):
absolute_tmp_file = tmpdir.join('some_file.txt').strpath
adata = b'12345678'
with open(absolute_tmp_file, 'wb') as afile:
afile.write(adata)
absolute_url = path2url(absolute_tmp_file)
assert absolute_url.startswith('file://')
relative_tmp_file = tmpdir.join('äöü.txt').strpath
rdata = b'abcdefgh'
with open(relative_tmp_file, 'wb') as rfile:
rfile.write(rdata)
pdf = FakeHTML(
string='''
<title>Test document</title>
<meta charset="utf-8">
<link
rel="attachment"
title="some file attachment äöü"
href="data:,hi%20there">
<link rel="attachment" href="{0}">
<link rel="attachment" href="{1}">
<h1>Heading 1</h1>
<h2>Heading 2</h2>
'''.format(absolute_url, os.path.basename(relative_tmp_file)),
base_url=tmpdir.strpath,
).write_pdf(
attachments=[
Attachment('data:,oob attachment', description='Hello'),
'data:,raw URL',
io.BytesIO(b'file like obj')
]
)
assert (
'<{}>'.format(hashlib.md5(b'hi there').hexdigest()).encode('ascii')
in pdf)
assert b'/F ()' in pdf
assert b'/UF (attachment.bin)' in pdf
name = BOM_UTF16_BE + 'some file attachment äöü'.encode('utf-16-be')
assert b'/Desc <' + name.hex().encode('ascii') + b'>' in pdf
assert hashlib.md5(adata).hexdigest().encode('ascii') in pdf
assert os.path.basename(absolute_tmp_file).encode('ascii') in pdf
assert hashlib.md5(rdata).hexdigest().encode('ascii') in pdf
name = BOM_UTF16_BE + 'some file attachment äöü'.encode('utf-16-be')
assert b'/Desc <' + name.hex().encode('ascii') + b'>' in pdf
assert hashlib.md5(b'oob attachment').hexdigest().encode('ascii') in pdf
assert b'/Desc (Hello)' in pdf
assert hashlib.md5(b'raw URL').hexdigest().encode('ascii') in pdf
assert hashlib.md5(b'file like obj').hexdigest().encode('ascii') in pdf
assert b'/EmbeddedFiles' in pdf
assert b'/Outlines' in pdf
@assert_no_logs
def test_attachments_data():
pdf = FakeHTML(string='''
<title>Test document 2</title>
<meta charset="utf-8">
<link rel="attachment" href="data:,some data">
''').write_pdf()
md5 = '<{}>'.format(hashlib.md5(b'some data').hexdigest()).encode('ascii')
assert md5 in pdf
@assert_no_logs
def test_attachments_none():
pdf = FakeHTML(string='''
<title>Test document 3</title>
<meta charset="utf-8">
<h1>Heading</h1>
''').write_pdf()
assert b'Names' not in pdf
assert b'Outlines' in pdf
@assert_no_logs
def test_attachments_none_empty():
pdf = FakeHTML(string='''
<title>Test document 3</title>
<meta charset="utf-8">
''').write_pdf()
assert b'Names' not in pdf
assert b'Outlines' not in pdf
@assert_no_logs
def test_annotations():
pdf = FakeHTML(string='''
<title>Test document</title>
<meta charset="utf-8">
<a
rel="attachment"
href="data:,some data"
download>A link that lets you download an attachment</a>
''').write_pdf()
assert hashlib.md5(b'some data').hexdigest().encode('ascii') in pdf
assert b'/FileAttachment' in pdf
assert b'/EmbeddedFiles' not in pdf
@pytest.mark.parametrize('style, media, bleed, trim', (
('bleed: 30pt; size: 10pt',
[-30, -30, 40, 40],
[-10, -10, 20, 20],
[0, 0, 10, 10]),
('bleed: 15pt 3pt 6pt 18pt; size: 12pt 15pt',
[-18, -15, 15, 21],
[-10, -10, 15, 21],
[0, 0, 12, 15]),
))
@assert_no_logs
def test_bleed(style, media, bleed, trim):
pdf = FakeHTML(string='''
<title>Test document</title>
<style>@page { %s }</style>
<body>test
''' % style).write_pdf()
assert '/MediaBox [ {} {} {} {} ]'.format(*media).encode('ascii') in pdf
assert '/BleedBox [ {} {} {} {} ]'.format(*bleed).encode('ascii') in pdf
assert '/TrimBox [ {} {} {} {} ]'.format(*trim).encode('ascii') in pdf