def extract_rdf_files(rdf_tarball, rdf_path):
if path(rdf_path).exists():
logger.info("\tRDF-files folder already exists in {}".format(rdf_path))
return
logger.info("\tExtracting {} into {}".format(rdf_tarball, rdf_path))
# create destdir if not exists
dest = path(rdf_path)
dest.mkdir_p()
cmd = "tar -C {dest} --strip-components 2 -x -f {tarb}".format(
dest=rdf_path, tarb=rdf_tarball)
exec_cmd(cmd)
return
def optimize_epub(src, dst):
logger.info("\t\tCreating ePUB at {}".format(dst))
zipped_files = []
# create temp directory to extract to
tmpd = tempfile.mkdtemp(dir=TMP_FOLDER)
with zipfile.ZipFile(src, 'r') as zf:
zipped_files = zf.namelist()
zf.extractall(tmpd)
remove_cover = False
for fname in zipped_files:
fnp = os.path.join(tmpd, fname)
if path(fname).ext in ('.png', '.jpeg', '.jpg', '.gif'):
# special case to remove ugly cover
if fname.endswith('cover.jpg') and is_bad_cover(fnp):
zipped_files.remove(fname)
remove_cover = True
else:
optimize_image(path_for_cmd(fnp))
if path(fname).ext in ('.htm', '.html'):
f = open(fnp, 'r')
html = update_html_for_static(book=book,
html_content=f.read(),
epub=True)
f.close()
with open(fnp, 'w') as f:
f.write(html)
if path(fname).ext == '.ncx':
pattern = "*** START: FULL LICENSE ***"
f = open(fnp, 'r')
ncx = f.read()
f.close()
soup = BeautifulSoup(ncx, ["lxml", "xml"])
for tag in soup.findAll('text'):
if pattern in tag.text:
s = tag.parent.parent
s.decompose()
for s in s.next_siblings:
s.decompose()
s.next_sibling
with open(fnp, 'w') as f:
f.write(soup.encode())
# delete {id}/cover.jpg if exist and update {id}/content.opf
if remove_cover:
# remove cover
path(os.path.join(tmpd, str(book.id), 'cover.jpg')).unlink_p()
soup = None
opff = os.path.join(tmpd, str(book.id), 'content.opf')
if os.path.exists(opff):
with open(opff, 'r') as fd:
soup = BeautifulSoup(fd.read(), ["lxml", "xml"])
for elem in soup.findAll():
if getattr(elem, 'attrs', {}).get('href') == 'cover.jpg':
elem.decompose()
with (open(opff, 'w')) as fd:
fd.write(soup.encode())
with cd(tmpd):
exec_cmd('zip -q0X "{dst}" mimetype'.format(dst=path_for_cmd(dst)))
exec_cmd('zip -qXr9D "{dst}" {files}'.format(
dst=path_for_cmd(dst),
files=" ".join(
[f for f in zipped_files if not f == 'mimetype'])))
path(tmpd).rmtree_p()
def optimize_jpeg(fpath):
exec_cmd('jpegoptim --strip-all -m50 "{path}"'.format(path=fpath))
def optimize_png(fpath):
pngquant = 'pngquant --nofs --force --ext=".png" "{path}"'
advdef = 'advdef -z -4 -i 5 "{path}"'
exec_cmd(pngquant.format(path=fpath))
exec_cmd(advdef.format(path=fpath))
def optimize_gif(fpath):
exec_cmd('gifsicle -O3 "{path}" -o "{path}"'.format(path=fpath))
def build_zimfile(static_folder, zim_path=None,
languages=[], formats=[],
title=None, description=None,
only_books=[]):
if not languages:
languages = ['mul']
languages.sort()
formats.sort()
if title is None:
if len(languages) > 5:
title = ("Project Gutenberg Library with {formats}"
.format(formats=",".join(formats)))
else:
title = ("Project Gutenberg Library ({langs}) with {formats}"
.format(langs=",".join(languages),
formats=",".join(formats)))
logger.info("\tWritting ZIM for {}".format(title))
if description is None:
description = "The first producer of free ebooks"
if zim_path is None:
if len(languages) > 1:
zim_path = "gutenberg_all_{date}.zim".format(
date=datetime.datetime.now().strftime('%m_%Y'))
else:
zim_path = "gutenberg_{lang}_all_{date}.zim".format(
lang=languages[0],
date=datetime.datetime.now().strftime('%Y-%m'))
languages = [ISO_MATRIX.get(lang, lang) for lang in languages]
languages.sort()
context = {
'languages': ','.join(languages),
'title': title,
'description': description,
'creator': 'gutenberg.org',
'publisher': 'Kiwix',
'home': 'Home.html',
'favicon': 'favicon.png',
'static': static_folder,
'zim': zim_path
}
cmd = ('zimwriterfs --welcome=\\"{home}\\" --favicon=\\"{favicon}\\" '
'--language=\\"{languages}\\" --title=\\"{title}\\" '
'--description=\\"{description}\\" '
'--creator=\\"{creator}\\" --publisher=\\"{publisher}\\" \\"{static}\\" \\"{zim}\\"'
.format(**context))
logger.debug("\t\t{}".format(re.sub('\\\\"','"',cmd)))
if exec_cmd(cmd):
logger.info("Successfuly created ZIM file at {}".format(zim_path))
else:
logger.error("Unable to create ZIM file :(")
def optimize_epub(src, dst):
logger.info("\t\tCreating ePUB at {}".format(dst))
zipped_files = []
# create temp directory to extract to
tmpd = tempfile.mkdtemp(dir=TMP_FOLDER)
with zipfile.ZipFile(src, 'r') as zf:
zipped_files = zf.namelist()
zf.extractall(tmpd)
remove_cover = False
for fname in zipped_files:
fnp = os.path.join(tmpd, fname)
if path(fname).ext in ('.png', '.jpeg', '.jpg', '.gif'):
# special case to remove ugly cover
if fname.endswith('cover.jpg') and is_bad_cover(fnp):
zipped_files.remove(fname)
remove_cover = True
else:
optimize_image(path_for_cmd(fnp))
if path(fname).ext in ('.htm', '.html'):
f = open(fnp, 'r')
html = update_html_for_static(book=book,
html_content=f.read(),
epub=True)
f.close()
with open(fnp, 'w') as f:
f.write(html)
if path(fname).ext == '.ncx':
pattern = "*** START: FULL LICENSE ***"
f = open(fnp, 'r')
ncx = f.read()
f.close()
soup = BeautifulSoup(ncx, ["lxml", "xml"])
for tag in soup.findAll('text'):
if pattern in tag.text:
s = tag.parent.parent
s.decompose()
for s in s.next_siblings:
s.decompose()
s.next_sibling
with open(fnp, 'w') as f:
f.write(soup.encode())
# delete {id}/cover.jpg if exist and update {id}/content.opf
if remove_cover:
# remove cover
path(os.path.join(tmpd, str(book.id), 'cover.jpg')).unlink_p()
soup = None
opff = os.path.join(tmpd, str(book.id), 'content.opf')
if os.path.exists(opff):
with open(opff, 'r') as fd:
soup = BeautifulSoup(fd.read(), ["lxml", "xml"])
for elem in soup.findAll():
if getattr(elem, 'attrs', {}).get('href') == 'cover.jpg':
elem.decompose()
with(open(opff, 'w')) as fd:
fd.write(soup.encode())
with cd(tmpd):
exec_cmd('zip -q0X "{dst}" mimetype'.format(dst=path_for_cmd(dst)))
exec_cmd('zip -qXr9D "{dst}" {files}'
.format(dst=path_for_cmd(dst),
files=" ".join([f for f in zipped_files
if not f == 'mimetype'])))
path(tmpd).rmtree_p()
def optimize_jpeg(fpath):
exec_cmd('jpegoptim --strip-all -m50 "{path}"'.format(path=fpath))
def optimize_png(fpath):
pngquant = 'pngquant --nofs --force --ext=".png" "{path}"'
advdef = 'advdef -z -4 -i 5 "{path}"'
exec_cmd(pngquant.format(path=fpath))
exec_cmd(advdef.format(path=fpath))
def optimize_gif(fpath):
exec_cmd('gifsicle -O3 "{path}" -o "{path}"'.format(path=fpath))
