def __init__(self, log):
self.log = log
self.ocr = OpenSyllabusOCR(log)
class TextExtractor(object):
"""
Class for extracting text data from pdf, doc/docx, html and other
"""
def __init__(self, log):
self.log = log
self.ocr = OpenSyllabusOCR(log)
def pdf(self, path):
"""
Method for extracting text data from pdf files
Input: full path to pdf file
Output: extracted text
"""
try:
pdf = PdfFileReader(file(os.path.join(DATA_DIR, path), 'rb'))
text = '\n'.join([page.extractText() for page in pdf.pages])
except Exception as e:
self.log.exception(e)
else:
if not re.sub('[\n]+', '', text):
return self.ocr.extract(os.path.join(DATA_DIR, path))
return text
def doc(self, path):
"""
Method for extracting text data from doc files
Input: full path to doc file
Output: extracted text
"""
try:
p = subprocess.Popen(['antiword', os.path.join(DATA_DIR, path)], stdout=subprocess.PIPE)
text = p.communicate()[0]
except Exception as e:
self.log.exception(e)
else:
return text
def docx(self, path):
"""
Method for extracting text data from docx files
Input: full path to docx file
Output: extracted text
"""
try:
docx = opendocx(os.path.join(DATA_DIR, path))
text = '\n'.join([page for page in getdocumenttext(docx)])
except Exception as e:
self.log.exception(e)
else:
return text
def htm(self, path):
"""
Method for extracting text data from htm files
Input: full path to htm file
Output: extracted text
"""
return self.html(path)
def html(self, path):
"""
Method for extracting text data from html files
Input: full path to html file
Output: extracted text
"""
try:
fh = open(os.path.join(DATA_DIR, path), 'r')
etree = html.fromstring(Cleaner(style=True).clean_html(fh.read()))
text = ' '.join(clean_list(etree.xpath('//text()')))
except Exception as e:
self.log.exception(e)
else:
return text
