mirror of
https://github.com/kovidgoyal/calibre.git
synced 2025-07-08 10:44:09 -04:00
Handle EPUB files that have non image based covers. Fixes #1092 (EPUB Conversion Error)
This commit is contained in:
Kovid Goyal
parent
2eb80adcd1
commit
ba99c66fcd
@ -32,7 +32,8 @@ Conversion of HTML/OPF files follows several stages:
|
||||
* The EPUB container is created.
|
||||
'''
|
||||
|
||||
import os, sys, re, cStringIO
|
||||
import os, sys, re, cStringIO, logging
|
||||
from contextlib import nested
|
||||
|
||||
from lxml.etree import XPath
|
||||
try:
|
||||
@ -118,6 +119,77 @@ def parse_content(filelist, opts, tdir):
|
||||
|
||||
return resource_map, hp.htmlfile_map, toc
|
||||
|
||||
def resize_cover(im, opts):
|
||||
width, height = im.size
|
||||
dw, dh = (opts.profile.screen_size[0]-width)/float(width), (opts.profile.screen_size[1]-height)/float(height)
|
||||
delta = min(dw, dh)
|
||||
if delta > 0:
|
||||
nwidth = int(width + delta*(width))
|
||||
nheight = int(height + delta*(height))
|
||||
im = im.resize((int(nwidth), int(nheight)), PILImage.ANTIALIAS).convert('RGB')
|
||||
return im
|
||||
|
||||
def process_title_page(mi, filelist, htmlfilemap, opts, tdir):
|
||||
old_title_page = None
|
||||
if mi.cover:
|
||||
if os.path.samefile(filelist[0].path, mi.cover):
|
||||
old_title_page = htmlfilemap[filelist[0].path]
|
||||
|
||||
#logger = logging.getLogger('html2epub')
|
||||
metadata_cover = mi.cover
|
||||
if metadata_cover and not os.path.exists(metadata_cover):
|
||||
metadata_cover = None
|
||||
if metadata_cover is not None:
|
||||
with open(metadata_cover, 'rb') as src:
|
||||
try:
|
||||
im = PILImage.open(src)
|
||||
if opts.profile.screen_size is not None:
|
||||
im = resize_cover(im, opts)
|
||||
metadata_cover = im
|
||||
except:
|
||||
metadata_cover = None
|
||||
|
||||
specified_cover = opts.cover
|
||||
if specified_cover and not os.path.exists(specified_cover):
|
||||
specified_cover = None
|
||||
if specified_cover is not None:
|
||||
with open(specified_cover, 'rb') as src:
|
||||
try:
|
||||
im = PILImage.open(src)
|
||||
if opts.profile.screen_size is not None:
|
||||
im = resize_cover(im, opts)
|
||||
specified_cover = im
|
||||
except:
|
||||
specified_cover = None
|
||||
|
||||
cover = metadata_cover if specified_cover is None or (opts.prefer_metadata_cover and metadata_cover is not None) else specified_cover
|
||||
if hasattr(cover, 'save'):
|
||||
cpath = '/'.join(('resources', '_cover_.jpg'))
|
||||
cover_dest = os.path.join(tdir, 'content', *cpath.split('/'))
|
||||
with open(cover_dest, 'wb') as f:
|
||||
im.save(f, format='jpeg')
|
||||
titlepage = '''\
|
||||
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
|
||||
<head>
|
||||
<title>Cover</title>
|
||||
<style type="text/css">@page {padding: 0pt; margin:0pt}</style>
|
||||
</head>
|
||||
<body style="padding: 0pt; margin: 0pt;}">
|
||||
<div style="text-align:center">
|
||||
<img style="text-align: center" src="%s" alt="cover" />
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
'''%cpath
|
||||
tp = 'calibre_title_page.html' if old_title_page is None else old_title_page
|
||||
tppath = os.path.join(tdir, 'content', tp)
|
||||
with open(tppath, 'wb') as f:
|
||||
f.write(titlepage)
|
||||
return tp if old_title_page is None else None, True
|
||||
|
||||
return None, old_title_page is not None
|
||||
|
||||
|
||||
def convert(htmlfile, opts, notification=None):
|
||||
htmlfile = os.path.abspath(htmlfile)
|
||||
if opts.output is None:
|
||||
@ -143,49 +215,16 @@ def convert(htmlfile, opts, notification=None):
|
||||
if opts.keep_intermediate:
|
||||
print 'Intermediate files in', tdir
|
||||
resource_map, htmlfile_map, generated_toc = parse_content(filelist, opts, tdir)
|
||||
logger = logging.getLogger('html2epub')
|
||||
resources = [os.path.join(tdir, 'content', f) for f in resource_map.values()]
|
||||
|
||||
cover_src = None
|
||||
if mi.cover and os.access(mi.cover, os.R_OK):
|
||||
cover_src = mi.cover
|
||||
else:
|
||||
mi.cover = None
|
||||
if opts.cover is not None and not opts.prefer_metadata_cover:
|
||||
cover_src = opts.cover
|
||||
|
||||
if cover_src is not None:
|
||||
cover_dest = os.path.join(tdir, 'content', 'resources', '_cover_.jpg')
|
||||
PILImage.open(cover_src).convert('RGB').save(cover_dest)
|
||||
mi.cover = cover_dest
|
||||
resources.append(cover_dest)
|
||||
|
||||
title_page, has_title_page = process_title_page(mi, filelist, htmlfile_map, opts, tdir)
|
||||
spine = [htmlfile_map[f.path] for f in filelist]
|
||||
if mi.cover:
|
||||
cpath = '/'.join(('resources', os.path.basename(mi.cover)))
|
||||
if opts.profile.screen_size is not None:
|
||||
im = PILImage.open(os.path.join(tdir, 'content', *cpath.split('/')))
|
||||
width, height = im.size
|
||||
dw, dh = (opts.profile.screen_size[0]-width)/float(width), (opts.profile.screen_size[1]-height)/float(height)
|
||||
delta = min(dw, dh)
|
||||
if delta > 0:
|
||||
nwidth = int(width + delta*(width))
|
||||
nheight = int(height + delta*(height))
|
||||
im.resize((int(nwidth), int(nheight)), PILImage.ANTIALIAS).convert('RGB').save(os.path.join(tdir, 'content', *cpath.split('/')))
|
||||
cover = '''\
|
||||
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
|
||||
<head><title>Cover Page</title><style type="text/css">@page {padding: 0pt; margin:0pt}</style></head>
|
||||
<body style="padding: 0pt; margin: 0pt;}">
|
||||
<div style="text-align:center">
|
||||
<img src="%s" alt="cover" />
|
||||
</div>
|
||||
</body>
|
||||
</html>'''%cpath
|
||||
cpath = os.path.join(tdir, 'content', 'calibre_cover_page.html')
|
||||
with open(cpath, 'wb') as f:
|
||||
f.write(cover)
|
||||
spine[0:0] = [os.path.basename(cpath)]
|
||||
mi.cover = None
|
||||
mi.cover_data = (None, None)
|
||||
if title_page is not None:
|
||||
spine = [title_page] + spine
|
||||
mi.cover = None
|
||||
mi.cover_data = (None, None)
|
||||
|
||||
|
||||
mi = create_metadata(tdir, mi, spine, resources)
|
||||
@ -200,8 +239,6 @@ def convert(htmlfile, opts, notification=None):
|
||||
opf_path = os.path.join(tdir, 'metadata.opf')
|
||||
with open(opf_path, 'wb') as f:
|
||||
mi.render(f, buf, 'toc.ncx')
|
||||
if opts.show_opf:
|
||||
print open(os.path.join(tdir, 'metadata.opf')).read()
|
||||
toc = buf.getvalue()
|
||||
if toc:
|
||||
with open(os.path.join(tdir, 'toc.ncx'), 'wb') as f:
|
||||
@ -209,9 +246,18 @@ def convert(htmlfile, opts, notification=None):
|
||||
if opts.show_ncx:
|
||||
print toc
|
||||
split(opf_path, opts)
|
||||
opf = OPF(opf_path, tdir)
|
||||
opf.remove_guide()
|
||||
if has_title_page:
|
||||
opf.create_guide_element()
|
||||
opf.add_guide_item('cover', 'Cover', 'content/'+spine[0])
|
||||
with open(opf_path, 'wb') as f:
|
||||
f.write(opf.render())
|
||||
epub = initialize_container(opts.output)
|
||||
epub.add_dir(tdir)
|
||||
print 'Output written to', opts.output
|
||||
if opts.show_opf:
|
||||
print open(os.path.join(tdir, 'metadata.opf')).read()
|
||||
logger.info('Output written to %s'%opts.output)
|
||||
if opts.extract_to is not None:
|
||||
epub.extractall(opts.extract_to)
|
||||
|
||||
|
||||
@ -530,6 +530,27 @@ class OPF(object):
|
||||
i = spine.index(x)
|
||||
spine[i:i+1] = items
|
||||
|
||||
def create_guide_element(self):
|
||||
e = etree.SubElement(self.root, '{%s}guide'%self.NAMESPACES['opf'])
|
||||
e.text = '\n '
|
||||
e.tail = '\n'
|
||||
return e
|
||||
|
||||
def remove_guide(self):
|
||||
self.guide = None
|
||||
for g in self.root.xpath('./*[re:match(name(), "guide", "i")]', namespaces={'re':'http://exslt.org/regular-expressions'}):
|
||||
self.root.remove(g)
|
||||
|
||||
def create_guide_item(self, type, title, href):
|
||||
e = etree.Element('{%s}reference'%self.NAMESPACES['opf'],
|
||||
type=type, title=title, href=href)
|
||||
e.tail='\n'
|
||||
return e
|
||||
|
||||
def add_guide_item(self, type, title, href):
|
||||
g = self.root.xpath('./*[re:match(name(), "guide", "i")]', namespaces={'re':'http://exslt.org/regular-expressions'})[0]
|
||||
g.append(self.create_guide_item(type, title, href))
|
||||
|
||||
def iterguide(self):
|
||||
return self.guide_path(self.root)
|
||||
|
||||
@ -628,6 +649,7 @@ class OPF(object):
|
||||
matches[0].text = unicode(val)
|
||||
return property(fget=fget, fset=fset)
|
||||
|
||||
|
||||
@apply
|
||||
def cover():
|
||||
|
||||
@ -641,8 +663,12 @@ class OPF(object):
|
||||
def fset(self, path):
|
||||
if self.guide is not None:
|
||||
self.guide.set_cover(path)
|
||||
for item in list(self.iterguide()):
|
||||
if 'cover' in item.get('type', ''):
|
||||
item.getparent().remove(item)
|
||||
|
||||
else:
|
||||
g = etree.SubElement(self.root, 'opf:guide', nsmap=self.NAMESPACES)
|
||||
g = self.create_guide_element()
|
||||
self.guide = Guide()
|
||||
self.guide.set_cover(path)
|
||||
etree.SubElement(g, 'opf:reference', nsmap=self.NAMESPACES,
|
||||
|
||||
@ -72,6 +72,6 @@ class TemporaryDirectory(object):
|
||||
return self.tdir
|
||||
|
||||
def __exit__(self, *args):
|
||||
if not self.keep:
|
||||
shutil.rmtree(self.tdir)
|
||||
|
||||
if not self.keep and os.path.exists(self.tdir):
|
||||
shutil.rmtree(self.tdir, ignore_errors=True)
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user