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Use the real constants module.

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This is progressing refactor of the calibre code to make it more
readable, and transform it to something more coherent.

In this patch, there are changes regarding imports for some modules,
instead of polluting namespace of each module with some other modules
symbols, which often were imported from other modules. Yuck.
This commit is contained in:
gryf
2020-05-29 17:04:53 +02:00
parent ee4801228f
commit ce89f5c9d1
54 changed files with 2383 additions and 2081 deletions
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ebook_converter/ebooks/oeb/transforms/cover.py
+52 -56
View File
@@ -1,66 +1,61 @@
import textwrap
import urllib.parse
from lxml import etree
from ebook_converter import guess_type
from ebook_converter.utils.imghdr import identify
from ebook_converter.utils.xml_parse import safe_xml_fromstring
from ebook_converter.polyglot.urllib import unquote
__license__ = 'GPL v3'
__copyright__ = '2010, Kovid Goyal <kovid@kovidgoyal.net>'
__docformat__ = 'restructuredtext en'
class CoverManager(object):
SVG_TEMPLATE = textwrap.dedent('''\
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="calibre:cover" content="true" />
<title>Cover</title>
<style type="text/css" title="override_css">
@page {padding: 0pt; margin:0pt}
body { text-align: center; padding:0pt; margin: 0pt; }
</style>
</head>
<body>
<div>
<svg version="1.1" xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
width="100%%" height="100%%" viewBox="__viewbox__"
preserveAspectRatio="__ar__">
<image width="__width__" height="__height__" xlink:href="%s"/>
</svg>
</div>
</body>
</html>
''')
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="calibre:cover" content="true" />
<title>Cover</title>
<style type="text/css" title="override_css">
@page {padding: 0pt; margin:0pt}
body { text-align: center; padding:0pt; margin: 0pt; }
</style>
</head>
<body>
<div>
<svg version="1.1" xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink"
width="100%%" height="100%%" viewBox="__viewbox__"
preserveAspectRatio="__ar__">
<image width="__width__" height="__height__" xlink:href="%s"/>
</svg>
</div>
</body>
</html>''')
NONSVG_TEMPLATE = textwrap.dedent('''\
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="calibre:cover" content="true" />
<title>Cover</title>
<style type="text/css" title="override_css">
@page {padding: 0pt; margin:0pt}
body { text-align: center; padding:0pt; margin: 0pt }
div { padding:0pt; margin: 0pt }
img { padding:0pt; margin: 0pt }
</style>
</head>
<body>
<div>
<img src="%s" alt="cover" __style__ />
</div>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="calibre:cover" content="true" />
<title>Cover</title>
<style type="text/css" title="override_css">
@page {padding: 0pt; margin:0pt}
body { text-align: center; padding:0pt; margin: 0pt }
div { padding:0pt; margin: 0pt }
img { padding:0pt; margin: 0pt }
</style>
</head>
<body>
<div>
<img src="%s" alt="cover" __style__ />
</div>
</body>
</html>
''')
def __init__(self, no_default_cover=False, no_svg_cover=False,
preserve_aspect_ratio=False, fixed_size=None):
preserve_aspect_ratio=False, fixed_size=None):
self.no_default_cover = no_default_cover
self.no_svg_cover = no_svg_cover
self.preserve_aspect_ratio = preserve_aspect_ratio
@@ -72,9 +67,9 @@ class CoverManager(object):
style = 'style="height: 100%%"'
else:
width, height = fixed_size
style = 'style="height: %s; width: %s"'%(height, width)
style = 'style="height: %s; width: %s"' % (height, width)
self.non_svg_template = self.NONSVG_TEMPLATE.replace('__style__',
style)
style)
def __call__(self, oeb, opts, log):
self.oeb = oeb
@@ -108,22 +103,23 @@ class CoverManager(object):
# if self.preserve_aspect_ratio:
# width, height = 600, 800
self.svg_template = self.svg_template.replace('__viewbox__',
'0 0 %d %d'%(width, height))
'0 0 %d %d' %
(width, height))
self.svg_template = self.svg_template.replace('__width__',
str(width))
str(width))
self.svg_template = self.svg_template.replace('__height__',
str(height))
str(height))
if href is not None:
templ = self.non_svg_template if self.no_svg_cover \
else self.svg_template
tp = templ%unquote(href)
tp = templ % unquote(href)
id, href = m.generate('titlepage', 'titlepage.xhtml')
item = m.add(id, href, guess_type('t.xhtml')[0],
data=safe_xml_fromstring(tp))
data=etree.fromstring(tp))
else:
item = self.oeb.manifest.hrefs[
urllib.parse.urldefrag(self.oeb.guide['titlepage'].href)[0]]
key = urllib.parse.urldefrag(self.oeb.guide['titlepage'].href)[0]
item = self.oeb.manifest.hrefs[key]
if item is not None:
self.oeb.spine.insert(0, item, True)
if 'cover' not in self.oeb.guide.refs: