def Book(options,
logger,
font_delta=0,
header=None,
profile=PRS500_PROFILE,
**settings):
from uuid import uuid4
ps = {}
ps['topmargin'] = options.top_margin
ps['evensidemargin'] = options.left_margin
ps['oddsidemargin'] = options.left_margin
ps['textwidth'] = profile.screen_width - (options.left_margin +
options.right_margin)
ps['textheight'] = profile.screen_height - (options.top_margin + options.bottom_margin) \
- profile.fudge
if header:
hdr = Header()
hb = TextBlock(textStyle=TextStyle(align='foot',
fontsize=int(
profile.header_font_size * 10)),
blockStyle=BlockStyle(blockwidth=ps['textwidth']))
hb.append(header)
hdr.PutObj(hb)
ps['headheight'] = profile.header_height
ps['headsep'] = options.header_separation
ps['header'] = hdr
ps['topmargin'] = 0
ps['textheight'] = profile.screen_height - (options.bottom_margin + ps['topmargin']) \
- ps['headheight'] - ps['headsep'] - profile.fudge
fontsize = int(10 * profile.font_size + font_delta * 20)
baselineskip = fontsize + 20
fonts = find_custom_fonts(options, logger)
tsd = dict(fontsize=fontsize,
parindent=int(10 * profile.parindent),
linespace=int(10 * profile.line_space),
baselineskip=baselineskip,
wordspace=10 * options.wordspace)
if fonts['serif'] and 'normal' in fonts['serif']:
tsd['fontfacename'] = fonts['serif']['normal'][1]
book = _Book(textstyledefault=tsd,
pagestyledefault=ps,
blockstyledefault=dict(blockwidth=ps['textwidth']),
bookid=uuid4().hex,
**settings)
for family in fonts.keys():
if fonts[family]:
for font in fonts[family].values():
book.embed_font(*font)
FONT_FILE_MAP[font[1]] = font[0]
for family in ['serif', 'sans', 'mono']:
if not fonts[family]:
fonts[family] = {'normal': (None, profile.default_fonts[family])}
elif 'normal' not in fonts[family]:
raise ConversionError('Could not find the normal version of the ' +
family + ' font')
return book, fonts
def process_file(lrfpath, opts, logger=None):
if logger is None:
level = logging.DEBUG if opts.verbose else logging.INFO
logger = logging.getLogger('lrf2html')
setup_cli_handlers(logger, level)
if opts.out is None:
opts.out = os.getcwdu()
else:
opts.out = os.path.abspath(opts.out)
if not os.path.isdir(opts.out):
raise ConversionError(opts.out + ' is not a directory')
if not os.path.exists(opts.out):
os.makedirs(opts.out)
document = LRFDocument(open(lrfpath, 'rb'))
LRFConverter(document, opts, logger)
def pdftohtml(output_dir, pdf_path, no_images, as_xml=False):
'''
Convert the pdf into html using the pdftohtml app.
This will write the html as index.html into output_dir.
It will also write all extracted images to the output_dir
'''
pdfsrc = os.path.join(output_dir, 'src.pdf')
index = os.path.join(output_dir, 'index.' + ('xml' if as_xml else 'html'))
with lopen(pdf_path, 'rb') as src, lopen(pdfsrc, 'wb') as dest:
shutil.copyfileobj(src, dest)
with CurrentDir(output_dir):
def a(x):
return os.path.basename(x)
exe = PDFTOHTML
cmd = [
exe, '-enc', 'UTF-8', '-noframes', '-p', '-nomerge', '-nodrm',
a(pdfsrc),
a(index)
]
if isbsd:
cmd.remove('-nodrm')
if no_images:
cmd.append('-i')
if as_xml:
cmd.append('-xml')
logf = PersistentTemporaryFile('pdftohtml_log')
try:
p = popen(cmd,
stderr=logf._fd,
stdout=logf._fd,
stdin=subprocess.PIPE)
except OSError as err:
if err.errno == errno.ENOENT:
raise ConversionError(
_('Could not find pdftohtml, check it is in your PATH'))
else:
raise
ret = eintr_retry_call(p.wait)
logf.flush()
logf.close()
out = lopen(logf.name, 'rb').read().decode('utf-8', 'replace').strip()
if ret != 0:
raise ConversionError('pdftohtml failed with return code: %d\n%s' %
(ret, out))
if out:
prints("pdftohtml log:")
prints(out)
if not os.path.exists(index) or os.stat(index).st_size < 100:
raise DRMError()
if not as_xml:
with lopen(index, 'r+b') as i:
raw = i.read().decode('utf-8')
raw = flip_images(raw)
raw = raw.replace(
'<head',
'<!-- created by calibre\'s pdftohtml -->\n <head', 1)
i.seek(0)
i.truncate()
# versions of pdftohtml >= 0.20 output self closing <br> tags, this
# breaks the pdf heuristics regexps, so replace them
raw = raw.replace('<br/>', '<br>')
raw = re.sub(r'<a\s+name=(\d+)',
r'<a id="\1"',
raw,
flags=re.I)
raw = re.sub(r'<a id="(\d+)"', r'<a id="p\1"', raw, flags=re.I)
raw = re.sub(r'<a href="index.html#(\d+)"',
r'<a href="#p\1"',
raw,
flags=re.I)
raw = replace_entities(raw)
raw = raw.replace('\u00a0', ' ')
i.write(raw.encode('utf-8'))
cmd = [
exe, '-f', '1', '-l', '1', '-xml', '-i', '-enc', 'UTF-8',
'-noframes', '-p', '-nomerge', '-nodrm', '-q', '-stdout',
a(pdfsrc)
]
if isbsd:
cmd.remove('-nodrm')
p = popen(cmd, stdout=subprocess.PIPE)
raw = p.stdout.read().strip()
if p.wait() == 0 and raw:
parse_outline(raw, output_dir)
try:
os.remove(pdfsrc)
except:
pass
def pdftohtml(output_dir, pdf_path, no_images, as_xml=False):
'''
Convert the pdf into html using the pdftohtml app.
This will write the html as index.html into output_dir.
It will also write all extracted images to the output_dir
'''
pdfsrc = os.path.join(output_dir, u'src.pdf')
index = os.path.join(output_dir, u'index.' + ('xml' if as_xml else 'html'))
with open(pdf_path, 'rb') as src, open(pdfsrc, 'wb') as dest:
shutil.copyfileobj(src, dest)
with CurrentDir(output_dir):
# This is necessary as pdftohtml doesn't always (linux) respect
# absolute paths. Also, it allows us to safely pass only bytestring
# arguments to subprocess on widows
# subprocess in python 2 cannot handle unicode arguments on windows
# that cannot be encoded with mbcs. Ensure all args are
# bytestrings.
def a(x):
return os.path.basename(x).encode('ascii')
exe = PDFTOHTML.encode(filesystem_encoding) if isinstance(
PDFTOHTML, unicode) else PDFTOHTML
cmd = [
exe, b'-enc', b'UTF-8', b'-noframes', b'-p', b'-nomerge',
b'-nodrm', b'-q',
a(pdfsrc),
a(index)
]
if isbsd:
cmd.remove(b'-nodrm')
if no_images:
cmd.append(b'-i')
if as_xml:
cmd.append('-xml')
logf = PersistentTemporaryFile(u'pdftohtml_log')
try:
p = popen(cmd,
stderr=logf._fd,
stdout=logf._fd,
stdin=subprocess.PIPE)
except OSError as err:
if err.errno == errno.ENOENT:
raise ConversionError(
_('Could not find pdftohtml, check it is in your PATH'))
else:
raise
while True:
try:
ret = p.wait()
break
except OSError as e:
if e.errno == errno.EINTR:
continue
else:
raise
logf.flush()
logf.close()
out = open(logf.name, 'rb').read().strip()
if ret != 0:
raise ConversionError(b'return code: %d\n%s' % (ret, out))
if out:
print "pdftohtml log:"
print out
if not os.path.exists(index) or os.stat(index).st_size < 100:
raise DRMError()
if not as_xml:
with open(index, 'r+b') as i:
raw = i.read()
raw = flip_images(raw)
raw = '<!-- created by calibre\'s pdftohtml -->\n' + raw
i.seek(0)
i.truncate()
# versions of pdftohtml >= 0.20 output self closing <br> tags, this
# breaks the pdf heuristics regexps, so replace them
raw = raw.replace(b'<br/>', b'<br>')
raw = re.sub(br'<a\s+name=(\d+)',
br'<a id="\1"',
raw,
flags=re.I)
i.write(raw)
cmd = [
exe, b'-f', b'1', '-l', '1', b'-xml', b'-i', b'-enc', b'UTF-8',
b'-noframes', b'-p', b'-nomerge', b'-nodrm', b'-q', b'-stdout',
a(pdfsrc)
]
p = popen(cmd, stdout=subprocess.PIPE)
raw = p.stdout.read().strip()
if p.wait() == 0 and raw:
parse_outline(raw, output_dir)
if isbsd:
cmd.remove(b'-nodrm')
try:
os.remove(pdfsrc)
except:
pass
def XPath(x):
try:
return etree.XPath(x, namespaces=XPNSMAP)
except etree.XPathSyntaxError:
raise ConversionError(
'The syntax of the XPath expression %s is invalid.' % repr(x))
def call_convert_cmd(log, output_dir, pdf_name, first=None, last=None):
'''
Convert the pdf into xml/txt using the pdftohtml/text app.
This will write the output as index.xml/.txt into output_dir.
pdftotext is often better than pdftohtml.
'''
from calibre.ebooks.pdf.pdftohtml import popen
pdfsrc = os.path.join(output_dir, pdf_name)
if USE_PDFTOTEXT:
EXE = 'pdftotext'
index_file = os.path.join(output_dir, 'index.txt')
else:
from calibre.ebooks.pdf.pdftohtml import PDFTOHTML as EXE
index_file = os.path.join(output_dir, 'index.xml')
if os.path.exists(index_file):
os.remove(index_file)
with CurrentDir(output_dir):
# This is necessary as pdftohtml doesn't always (linux) respect
# absolute paths. Also, it allows us to safely pass only bytestring
# arguments to subprocess on widows
# subprocess in python 2 cannot handle unicode arguments on windows
# that cannot be encoded with mbcs. Ensure all args are bytestrings.
def a(x):
return os.path.basename(x).encode('ascii')
exe = EXE.encode(filesystem_encoding) if isinstance(EXE, str) else EXE
if USE_PDFTOTEXT:
cmd = [
exe, b'-enc', b'UTF-8', b'-nopgbrk', b'-q',
a(pdfsrc),
a(index_file)
]
else:
cmd = [
exe, b'-enc', b'UTF-8', b'-noframes', b'-p', b'-nomerge',
b'-nodrm', b'-q',
a(pdfsrc),
a(index_file), b'-xml', b'-i'
]
if isbsd:
cmd.remove(b'-nodrm')
if first is not None:
cmd.append(b'-f')
cmd.append(str(first))
if last is not None:
cmd.append(b'-l')
cmd.append(str(last))
logf = PersistentTemporaryFile('pdftohtml_log')
try:
p = popen(cmd,
stderr=logf._fd,
stdout=logf._fd,
stdin=subprocess.PIPE)
except OSError as err:
if err.errno == errno.ENOENT:
raise ConversionError(
_('Could not find %s, check it is in your PATH') % EXE)
else:
raise
while True:
try:
ret = p.wait()
break
except OSError as e:
if e.errno == errno.EINTR:
continue
else:
raise
logf.flush()
logf.close()
out = open(logf.name, 'rb').read().strip()
if ret != 0:
raise ConversionError(out)
if out:
log('%s log:' % EXE)
log(out)
if not os.path.exists(index_file):
raise DRMError()
if USE_PDFTOTEXT:
with open(index_file, 'r', encoding='utf-8', errors='ignore') as f:
text = f.read()
else:
with open(index_file, 'r', encoding='utf-8', errors='ignore') as f:
# avoid encoding problems
content = f.read().encode('utf-8')
parser = etree.XMLParser(recover=True)
tree = etree.fromstring(clean_ascii_chars(content), parser)
text = ''.join(e.text or '' for e in tree.iter('text'))
return text
