mirror of
https://github.com/kovidgoyal/calibre.git
synced 2025-07-09 03:04:10 -04:00
Merge various OEB-processing enhancements from local development branch.
This commit is contained in:
Marshall T. Vandegrift
commit
23d17f0a66
2
setup.py
2
setup.py
@ -166,7 +166,7 @@ if __name__ == '__main__':
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metadata_sqlite = 'library/metadata_sqlite.sql',
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jquery = 'gui2/viewer/jquery.js',
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jquery_scrollTo = 'gui2/viewer/jquery_scrollTo.js',
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html_css = 'ebooks/lit/html.css',
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html_css = 'ebooks/oeb/html.css',
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)
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DEST = os.path.join('src', APPNAME, 'resources.py')
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@ -15,7 +15,7 @@ from lxml import etree
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from calibre.ebooks.lit import LitError
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from calibre.ebooks.lit.maps import OPF_MAP, HTML_MAP
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import calibre.ebooks.lit.mssha1 as mssha1
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from calibre.ebooks.lit.oeb import urlnormalize
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from calibre.ebooks.oeb.base import urlnormalize
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from calibre.ebooks import DRMError
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from calibre import plugins
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lzx, lxzerror = plugins['lzx']
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@ -23,11 +23,12 @@ from urllib import unquote as urlunquote
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from lxml import etree
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from calibre.ebooks.lit.reader import DirectoryEntry
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import calibre.ebooks.lit.maps as maps
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from calibre.ebooks.lit.oeb import OEB_DOCS, OEB_STYLES, OEB_CSS_MIME, \
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from calibre.ebooks.oeb.base import OEB_DOCS, OEB_STYLES, OEB_CSS_MIME, \
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CSS_MIME, OPF_MIME, XML_NS, XML
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from calibre.ebooks.lit.oeb import namespace, barename, urlnormalize, xpath
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from calibre.ebooks.lit.oeb import prefixname, FauxLogger, OEBBook
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from calibre.ebooks.lit.stylizer import Stylizer
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from calibre.ebooks.oeb.base import namespace, barename, prefixname, \
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urlnormalize, xpath
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from calibre.ebooks.oeb.base import FauxLogger, OEBBook
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from calibre.ebooks.oeb.stylizer import Stylizer
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from calibre.ebooks.lit.lzx import Compressor
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import calibre
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from calibre import LoggingInterface
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2
src/calibre/ebooks/oeb/__init__.py
Normal file
2
src/calibre/ebooks/oeb/__init__.py
Normal file
@ -0,0 +1,2 @@
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__license__ = 'GPL v3'
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__copyright__ = '2008, Marshall T. Vandegrift <llasram@gmail.com>'
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@ -38,12 +38,14 @@ def OPF(name): return '{%s}%s' % (OPF2_NS, name)
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def DC(name): return '{%s}%s' % (DC11_NS, name)
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def NCX(name): return '{%s}%s' % (NCX_NS, name)
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EPUB_MIME = 'application/epub+zip'
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XHTML_MIME = 'application/xhtml+xml'
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CSS_MIME = 'text/css'
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NCX_MIME = 'application/x-dtbncx+xml'
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OPF_MIME = 'application/oebps-package+xml'
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OEB_DOC_MIME = 'text/x-oeb1-document'
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OEB_CSS_MIME = 'text/x-oeb1-css'
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OPENTYPE_MIME = 'font/opentype'
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OEB_STYLES = set([CSS_MIME, OEB_CSS_MIME, 'text/x-oeb-css'])
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OEB_DOCS = set([XHTML_MIME, 'text/html', OEB_DOC_MIME, 'text/x-oeb-document'])
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@ -75,7 +77,14 @@ def prefixname(name, nsrmap):
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def xpath(elem, expr):
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return elem.xpath(expr, namespaces=XPNSMAP)
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URL_UNSAFE = r"""`!@#$%^&*[](){}?+=;:'",<>\| """
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def xml2str(root):
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return etree.tostring(root, encoding='utf-8', xml_declaration=True)
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ASCII_CHARS = set(chr(x) for x in xrange(128))
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URL_SAFE = set(u'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
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u'abcdefghijklmnopqrstuvwxyz'
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u'0123456789' u'_.-/~')
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URL_UNSAFE = ASCII_CHARS - URL_SAFE
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def urlquote(href):
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result = []
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for char in href:
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@ -116,6 +125,9 @@ class DirContainer(AbstractContainer):
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def write(self, path, data):
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path = os.path.join(self.rootdir, path)
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dir = os.path.dirname(path)
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if not os.path.isdir(dir):
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os.makedirs(dir)
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with open(urlunquote(path), 'wb') as f:
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return f.write(data)
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@ -123,6 +135,21 @@ class DirContainer(AbstractContainer):
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path = os.path.join(self.rootdir, path)
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return os.path.isfile(urlunquote(path))
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class DirWriter(object):
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def __init__(self, version=2.0):
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self.version = version
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def dump(self, oeb, path):
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if not os.path.isdir(path):
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os.mkdir(path)
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output = DirContainer(path)
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for item in oeb.manifest.values():
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output.write(item.href, str(item))
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metadata = oeb.to_opf2() if self.version == 2 else oeb.to_opf1()
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for href, data in metadata.values():
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output.write(href, xml2str(data))
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return
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class Metadata(object):
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TERMS = set(['contributor', 'coverage', 'creator', 'date', 'description',
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@ -277,11 +304,33 @@ class Manifest(object):
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return property(fget, fset, fdel)
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data = data()
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def __str__(self):
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data = self.data
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if isinstance(data, etree._Element):
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return xml2str(data)
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return str(data)
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def __cmp__(self, other):
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result = cmp(self.spine_position, other.spine_position)
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if result != 0:
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return result
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return cmp(self.id, other.id)
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def relhref(self, href):
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if '/' not in self.href:
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return href
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base = os.path.dirname(self.href).split('/')
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target, frag = urldefrag(href)
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target = target.split('/')
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for index in xrange(min(len(base), len(target))):
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if base[index] != target[index]: break
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else:
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index += 1
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relhref = (['..'] * (len(base) - index)) + target[index:]
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relhref = '/'.join(relhref)
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if frag:
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relhref = '#'.join((relhref, frag))
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return relhref
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def abshref(self, href):
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if '/' not in self.href:
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@ -361,7 +410,7 @@ class Manifest(object):
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def to_opf2(self, parent=None):
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elem = element(parent, OPF('manifest'))
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for item in self.items.values():
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for item in self.ids.values():
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attrib = {'id': item.id, 'href': item.href,
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'media-type': item.media_type}
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if item.fallback:
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@ -375,18 +424,35 @@ class Spine(object):
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self.oeb = oeb
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self.items = []
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def add(self, item, linear):
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def _linear(self, linear):
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if isinstance(linear, StringTypes):
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linear = linear.lower()
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if linear is None or linear in ('yes', 'true'):
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linear = True
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elif linear in ('no', 'false'):
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linear = False
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item.linear = linear
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return linear
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def add(self, item, linear=None):
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item.linear = self._linear(linear)
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item.spine_position = len(self.items)
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self.items.append(item)
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return item
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def insert(self, index, item, linear):
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item.linear = self._linear(linear)
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item.spine_position = index
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self.items.insert(index, item)
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for i in xrange(index, len(self.items)):
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self.items[i].spine_position = i
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return item
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def remove(self, item):
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index = item.spine_position
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self.items.pop(index)
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for i in xrange(index, len(self.items)):
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self.items[i].spine_position = i
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def __iter__(self):
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for item in self.items:
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yield item
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@ -493,6 +559,12 @@ class TOC(object):
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node = TOC(title, href, klass, id)
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self.nodes.append(node)
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return node
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def iterdescendants(self):
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for node in self.nodes:
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yield node
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for child in node.iterdescendants():
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yield child
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def __iter__(self):
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for node in self.nodes:
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@ -500,6 +572,15 @@ class TOC(object):
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def __getitem__(self, index):
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return self.nodes[index]
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def autolayer(self):
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prev = None
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for node in list(self.nodes):
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if prev and urldefrag(prev.href)[0] == urldefrag(node.href)[0]:
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self.nodes.remove(node)
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prev.nodes.append(node)
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else:
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prev = node
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def depth(self, level=0):
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if self.nodes:
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@ -533,14 +614,15 @@ class TOC(object):
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class OEBBook(object):
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def __init__(self, opfpath, container=None, logger=FauxLogger()):
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if not container:
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def __init__(self, opfpath=None, container=None, logger=FauxLogger()):
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if opfpath and not container:
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container = DirContainer(os.path.dirname(opfpath))
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opfpath = os.path.basename(opfpath)
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self.container = container
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self.logger = logger
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opf = self._read_opf(opfpath)
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self._all_from_opf(opf)
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if opfpath or container:
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opf = self._read_opf(opfpath)
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self._all_from_opf(opf)
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def _convert_opf1(self, opf):
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nroot = etree.Element(OPF('package'),
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@ -45,7 +45,6 @@ html, div, map, dt, isindex, form {
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body {
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display: block;
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margin: 8px;
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}
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p, dl, multicol {
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@ -59,7 +58,7 @@ dd {
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blockquote {
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display: block;
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margin: 1em 40px;
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margin: 1em;
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}
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address {
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@ -74,7 +73,7 @@ center {
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blockquote[type=cite] {
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display: block;
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margin: 1em 0px;
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margin: 1em 0em;
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border-color: blue;
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border-width: thin;
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}
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@ -234,14 +233,6 @@ th {
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/* inlines */
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q:before {
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content: open-quote;
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}
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q:after {
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content: close-quote;
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}
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b, strong {
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font-weight: bolder;
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}
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@ -392,22 +383,6 @@ spacer {
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float: none ! important;
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}
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/* focusable content: anything w/ tabindex >=0 is focusable */
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abbr:focus, acronym:focus, address:focus, applet:focus, b:focus,
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base:focus, big:focus, blockquote:focus, br:focus, canvas:focus, caption:focus,
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center:focus, cite:focus, code:focus, col:focus, colgroup:focus, dd:focus,
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del:focus, dfn:focus, dir:focus, div:focus, dl:focus, dt:focus, em:focus,
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fieldset:focus, font:focus, form:focus, h1:focus, h2:focus, h3:focus, h4:focus,
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h5:focus, h6:focus, hr:focus, i:focus, img:focus, ins:focus,
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kbd:focus, label:focus, legend:focus, li:focus, link:focus, menu:focus,
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object:focus, ol:focus, p:focus, pre:focus, q:focus, s:focus, samp:focus,
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small:focus, span:focus, strike:focus, strong:focus, sub:focus, sup:focus,
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table:focus, tbody:focus, td:focus, tfoot:focus, th:focus, thead:focus,
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tr:focus, tt:focus, u:focus, ul:focus, var:focus {
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/* Don't specify the outline-color, we should always use initial value. */
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outline: 1px dotted;
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}
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/* hidden elements */
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area, base, basefont, head, meta, script, style, title,
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noembed, param, link {
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@ -16,16 +16,19 @@ import itertools
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import types
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import re
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import copy
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from itertools import izip
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import cssutils
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from cssutils.css import CSSStyleRule, CSSPageRule, CSSStyleDeclaration, \
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CSSValueList, cssproperties
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from lxml import etree
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from calibre.ebooks.lit.oeb import XHTML_NS, CSS_MIME, OEB_STYLES
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from calibre.ebooks.lit.oeb import barename, urlnormalize
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from lxml.cssselect import css_to_xpath, ExpressionError
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from calibre.ebooks.oeb.base import XHTML, XHTML_NS, CSS_MIME, OEB_STYLES
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from calibre.ebooks.oeb.base import barename, urlnormalize
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from calibre.resources import html_css
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XHTML_CSS_NAMESPACE = '@namespace "%s";\n' % XHTML_NS
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HTML_CSS_STYLESHEET = cssutils.parseString(html_css)
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XHTML_CSS_NAMESPACE = "@namespace url(http://www.w3.org/1999/xhtml);\n"
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HTML_CSS_STYLESHEET.namespaces['h'] = XHTML_NS
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INHERITED = set(['azimuth', 'border-collapse', 'border-spacing',
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'caption-side', 'color', 'cursor', 'direction', 'elevation',
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@ -82,35 +85,48 @@ DEFAULTS = {'azimuth': 'center', 'background-attachment': 'scroll',
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FONT_SIZE_NAMES = set(['xx-small', 'x-small', 'small', 'medium', 'large',
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'x-large', 'xx-large'])
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|
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FONT_SIZE_LIST = [('xx-small', 1, 6.),
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('x-small', None, 7.),
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('small', 2, 8.),
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('medium', 3, 9.),
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('large', 4, 11.),
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('x-large', 5, 13.),
|
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('xx-large', 6, 15.),
|
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(None, 7, 17.)]
|
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FONT_SIZES = [('xx-small', 1),
|
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('x-small', None),
|
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('small', 2),
|
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('medium', 3),
|
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('large', 4),
|
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('x-large', 5),
|
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('xx-large', 6),
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(None, 7)]
|
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|
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FONT_SIZE_BY_NAME = {}
|
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FONT_SIZE_BY_NUM = {}
|
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for name, num, size in FONT_SIZE_LIST:
|
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FONT_SIZE_BY_NAME[name] = size
|
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FONT_SIZE_BY_NUM[num] = size
|
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|
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XPNSMAP = {'h': XHTML_NS,}
|
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def xpath(elem, expr):
|
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return elem.xpath(expr, namespaces=XPNSMAP)
|
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|
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class CSSSelector(etree.XPath):
|
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def __init__(self, css, namespaces=XPNSMAP):
|
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path = css_to_xpath(css)
|
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etree.XPath.__init__(self, path, namespaces=namespaces)
|
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self.css = css
|
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|
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def __repr__(self):
|
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return '<%s %s for %r>' % (
|
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self.__class__.__name__,
|
||||
hex(abs(id(self)))[2:],
|
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self.css)
|
||||
|
||||
|
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class Page(object):
|
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def __init__(self, width, height, dpi):
|
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self.width = float(width)
|
||||
self.height = float(height)
|
||||
def __init__(self, width, height, dpi, fbase, fsizes):
|
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self.width = (float(width) / dpi) * 72.
|
||||
self.height = (float(height) / dpi) * 72.
|
||||
self.dpi = float(dpi)
|
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self.fbase = float(fbase)
|
||||
self.fsizes = []
|
||||
for (name, num), size in izip(FONT_SIZES, fsizes):
|
||||
self.fsizes.append((name, num, float(size)))
|
||||
self.fnames = dict((name, sz) for name, _, sz in self.fsizes if name)
|
||||
self.fnums = dict((num, sz) for _, num, sz in self.fsizes if num)
|
||||
|
||||
class Profiles(object):
|
||||
PRS500 = Page(584, 754, 168.451)
|
||||
PRS505 = PRS500
|
||||
PRS505 = Page(584, 754, 168.451, 12, [7.5, 9, 10, 12, 15.5, 20, 22, 24])
|
||||
MSLIT = Page(652, 480, 100.0, 13, [10, 11, 13, 16, 18, 20, 22, 26])
|
||||
|
||||
|
||||
class Stylizer(object):
|
||||
@ -126,12 +142,13 @@ class Stylizer(object):
|
||||
parser = cssutils.CSSParser()
|
||||
parser.setFetcher(lambda path: ('utf-8', oeb.container.read(path)))
|
||||
for elem in head:
|
||||
tag = barename(elem.tag)
|
||||
if tag == 'style':
|
||||
text = ''.join(elem.text)
|
||||
if elem.tag == XHTML('style') and elem.text \
|
||||
and elem.get('type', CSS_MIME) in OEB_STYLES:
|
||||
text = XHTML_CSS_NAMESPACE + elem.text
|
||||
stylesheet = parser.parseString(text, href=cssname)
|
||||
stylesheet.namespaces['h'] = XHTML_NS
|
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stylesheets.append(stylesheet)
|
||||
elif tag == 'link' \
|
||||
elif elem.tag == XHTML('link') and elem.get('href') \
|
||||
and elem.get('rel', 'stylesheet') == 'stylesheet' \
|
||||
and elem.get('type', CSS_MIME) in OEB_STYLES:
|
||||
href = urlnormalize(elem.attrib['href'])
|
||||
@ -143,11 +160,13 @@ class Stylizer(object):
|
||||
data = XHTML_CSS_NAMESPACE
|
||||
data += oeb.manifest.hrefs[path].data
|
||||
stylesheet = parser.parseString(data, href=path)
|
||||
stylesheet.namespaces['h'] = XHTML_NS
|
||||
self.STYLESHEETS[path] = stylesheet
|
||||
stylesheets.append(stylesheet)
|
||||
rules = []
|
||||
index = 0
|
||||
self.stylesheets = set()
|
||||
self.page_rule = {}
|
||||
for stylesheet in stylesheets:
|
||||
href = stylesheet.href
|
||||
self.stylesheets.add(href)
|
||||
@ -157,6 +176,16 @@ class Stylizer(object):
|
||||
rules.sort()
|
||||
self.rules = rules
|
||||
self._styles = {}
|
||||
for _, _, cssdict, text, _ in rules:
|
||||
try:
|
||||
selector = CSSSelector(text)
|
||||
except ExpressionError, e:
|
||||
continue
|
||||
for elem in selector(tree):
|
||||
self.style(elem)._update_cssdict(cssdict)
|
||||
for elem in tree.xpath('//*[@style]'):
|
||||
self.style(elem)._apply_style_tag()
|
||||
|
||||
|
||||
def flatten_rule(self, rule, href, index):
|
||||
results = []
|
||||
@ -169,7 +198,7 @@ class Stylizer(object):
|
||||
results.append((specificity, selector, style, text, href))
|
||||
elif isinstance(rule, CSSPageRule):
|
||||
style = self.flatten_style(rule.style)
|
||||
results.append(((0, 0, 0, 0), [], style, '@page', href))
|
||||
self.page_rule.update(style)
|
||||
return results
|
||||
|
||||
def flatten_style(self, cssstyle):
|
||||
@ -186,7 +215,7 @@ class Stylizer(object):
|
||||
size = style['font-size']
|
||||
if size == 'normal': size = 'medium'
|
||||
if size in FONT_SIZE_NAMES:
|
||||
style['font-size'] = "%dpt" % FONT_SIZE_BY_NAME[size]
|
||||
style['font-size'] = "%dpt" % self.page.fnames[size]
|
||||
return style
|
||||
|
||||
def _normalize_edge(self, cssvalue, name):
|
||||
@ -233,9 +262,10 @@ class Stylizer(object):
|
||||
return style
|
||||
|
||||
def style(self, element):
|
||||
try: return self._styles[element]
|
||||
except: pass
|
||||
return Style(element, self)
|
||||
try:
|
||||
return self._styles[element]
|
||||
except KeyError:
|
||||
return Style(element, self)
|
||||
|
||||
def stylesheet(self, name, font_scale=None):
|
||||
rules = []
|
||||
@ -250,74 +280,23 @@ class Stylizer(object):
|
||||
rules.append('%s {\n %s;\n}' % (selector, style))
|
||||
return '\n'.join(rules)
|
||||
|
||||
|
||||
class Style(object):
|
||||
def __init__(self, element, stylizer):
|
||||
self._element = element
|
||||
self._page = stylizer.page
|
||||
self._stylizer = stylizer
|
||||
self._style = self._assemble_style(element, stylizer)
|
||||
self._style = {}
|
||||
stylizer._styles[element] = self
|
||||
|
||||
def _update_cssdict(self, cssdict):
|
||||
self._style.update(cssdict)
|
||||
|
||||
def _assemble_style(self, element, stylizer):
|
||||
result = {}
|
||||
rules = stylizer.rules
|
||||
for _, selector, style, _, _ in rules:
|
||||
if self._selects_element(element, selector):
|
||||
result.update(style)
|
||||
try:
|
||||
style = CSSStyleDeclaration(element.attrib['style'])
|
||||
result.update(stylizer.flatten_style(style))
|
||||
except KeyError:
|
||||
pass
|
||||
return result
|
||||
|
||||
def _selects_element(self, element, selector):
|
||||
def _selects_element(element, items, index):
|
||||
if index == -1:
|
||||
return True
|
||||
item = items[index]
|
||||
if item.type == 'universal':
|
||||
pass
|
||||
elif item.type == 'type-selector':
|
||||
name1 = ("{%s}%s" % item.value).lower()
|
||||
name2 = element.tag.lower()
|
||||
if name1 != name2:
|
||||
return False
|
||||
elif item.type == 'id':
|
||||
name1 = item.value[1:]
|
||||
name2 = element.get('id', '')
|
||||
if name1 != name2:
|
||||
return False
|
||||
elif item.type == 'class':
|
||||
name = item.value[1:].lower()
|
||||
classes = element.get('class', '').lower().split()
|
||||
if name not in classes:
|
||||
return False
|
||||
elif item.type == 'child':
|
||||
parent = element.getparent()
|
||||
if parent is None:
|
||||
return False
|
||||
element = parent
|
||||
elif item.type == 'descendant':
|
||||
element = element.getparent()
|
||||
while element is not None:
|
||||
if _selects_element(element, items, index - 1):
|
||||
return True
|
||||
element = element.getparent()
|
||||
return False
|
||||
elif item.type == 'pseudo-class':
|
||||
if item.value == ':first-child':
|
||||
e = element.getprevious()
|
||||
if e is not None:
|
||||
return False
|
||||
else:
|
||||
return False
|
||||
elif item.type == 'pseudo-element':
|
||||
return False
|
||||
else:
|
||||
return False
|
||||
return _selects_element(element, items, index - 1)
|
||||
return _selects_element(element, selector, len(selector) - 1)
|
||||
def _apply_style_tag(self):
|
||||
attrib = self._element.attrib
|
||||
if 'style' in attrib:
|
||||
style = CSSStyleDeclaration(attrib['style'])
|
||||
self._style.update(self._stylizer.flatten_style(style))
|
||||
|
||||
def _has_parent(self):
|
||||
parent = self._element.getparent()
|
||||
@ -383,18 +362,19 @@ class Style(object):
|
||||
result = None
|
||||
factor = None
|
||||
if value == 'inherit':
|
||||
value = 'medium'
|
||||
# We should only see this if the root element
|
||||
value = self._page.fbase
|
||||
if value in FONT_SIZE_NAMES:
|
||||
result = FONT_SIZE_BY_NAME[value]
|
||||
result = self._page.fnames[value]
|
||||
elif value == 'smaller':
|
||||
factor = 1.0/1.2
|
||||
for _, _, size in FONT_SIZE_LIST:
|
||||
for _, _, size in self._page.fsizes:
|
||||
if base <= size: break
|
||||
factor = None
|
||||
result = size
|
||||
elif value == 'larger':
|
||||
factor = 1.2
|
||||
for _, _, size in reversed(FONT_SIZE_LIST):
|
||||
for _, _, size in reversed(self._page.fsizes):
|
||||
if base >= size: break
|
||||
factor = None
|
||||
result = size
|
||||
@ -410,7 +390,7 @@ class Style(object):
|
||||
styles = self._stylizer._styles
|
||||
base = styles[self._element.getparent()].fontSize
|
||||
else:
|
||||
base = normalize_fontsize(DEFAULTS['font-size'])
|
||||
base = self._page.fbase
|
||||
if 'font-size' in self._style:
|
||||
size = self._style['font-size']
|
||||
result = normalize_fontsize(size, base)
|
||||
@ -441,4 +421,8 @@ class Style(object):
|
||||
|
||||
def __str__(self):
|
||||
items = self._style.items()
|
||||
items.sort()
|
||||
return '; '.join("%s: %s" % (key, val) for key, val in items)
|
||||
|
||||
def cssdict(self):
|
||||
return dict(self._style)
|
||||
Loading…
x
Reference in New Issue
Block a user