The PDFReader class¶
- class ferenda.PDFReader(pages=None, filename=None, workdir=None, images=True, convert_to_pdf=False, keep_xml=True, ocr_lang=None, fontspec=None)¶
Parses PDF files and makes the content available as a object hierarchy. Calling the read() method returns a ferenda.pdfreader.PDFFile object, which is a list of ferenda.pdfreader.Page objects, which each is a list of ferenda.pdfreader.Textbox objects, which each is a list of ferenda.pdfreader.Textelement objects.
This class depends on the command line tool pdftohtml from poppler.
The class can also handle any other type of document (such as Word/OOXML/WordPerfect/RTF) that OpenOffice or LibreOffice handles by first converting it to PDF using the soffice command line tool (which then must be in your $PATH).
If the PDF contains only scanned pages (without any OCR information), the pages can be run through the tesseract command line tool (which, again, needs to be in your $PATH). You need to provide the main language of the document as the ocr_lang parameter, and you need to have installed the tesseract language files for that language.
- dims = 'bbox (?P<left>\\d+) (?P<top>\\d+) (?P<right>\\d+) (?P<bottom>\\d+)'¶
search(string[, pos[, endpos]]) -> match object or None. Scan through string looking for a match, and return a corresponding match object instance. Return None if no position in the string matches.
- tagname = 'div'¶
- classname = 'pdfreader'¶
- textboxes(gluefunc=None, pageobjects=False, keepempty=False)¶
Return an iterator of the textboxes available.
gluefunc should be a callable that is called with (textbox, nextbox, prevbox), and returns True iff nextbox should be appended to textbox.
If pageobjects, the iterator can return Page objects to signal that pagebreak has ocurred (these Page objects may or may not have Textbox elements).
If keepempty, process and return textboxes that have no text content (these are filtered out by default)
Returns the median box width of all pages.
- class ferenda.pdfreader.Page(*args, **kwargs)¶
Represents a Page in a PDF file. Has width and height properties.
- tagname = 'div'¶
- classname = 'pdfpage'¶
- margins = None¶
- boundingbox(top=0, left=0, bottom=None, right=None)¶
A generator of ferenda.pdfreader.Textbox objects that fit into the bounding box specified by the parameters.
- class ferenda.pdfreader.Textbox(*args, **kwargs)¶
A textbox is a amount of text on a PDF page, with top, left, width and height properties that specifies the bounding box of the text. The fontid property specifies the id of font used (use getfont() to get a dict of all font properties). A textbox consists of a list of Textelements which may differ in basic formatting (bold and or italics), but otherwise all text in a Textbox has the same font and size.
- tagname = 'p'¶
- classname = 'textbox'¶
- as_xhtml(uri, parent_uri=None)¶