capybara/virtualenv/lib/python2.7/site-packages/lxml/html/__init__.py
def rewrite_links(self, link_repl_func, resolve_base_href=True,
                      base_href=None):
        """
        Rewrite all the links in the document.  For each link
        ``link_repl_func(link)`` will be called, and the return value
        will replace the old link.

        Note that links may not be absolute (unless you first called
        ``make_links_absolute()``), and may be internal (e.g.,
        ``'#anchor'``).  They can also be values like
        ``'mailto:email'`` or ``'javascript:expr'``.

        If you give ``base_href`` then all links passed to
        ``link_repl_func()`` will take that into account.

        If the ``link_repl_func`` returns None, the attribute or
        tag text will be removed completely.
        """
        if base_href is not None:
            # FIXME: this can be done in one pass with a wrapper
            # around link_repl_func
            self.make_links_absolute(
                base_href, resolve_base_href=resolve_base_href)
        elif resolve_base_href:
            self.resolve_base_href()

        for el, attrib, link, pos in self.iterlinks():
            new_link = link_repl_func(link.strip())
            if new_link == link:
                continue
            if new_link is None:
                # Remove the attribute or element content
                if attrib is None:
                    el.text = ''
                else:
                    del el.attrib[attrib]
                continue

            if attrib is None:
                new = el.text[:pos] + new_link + el.text[pos+len(link):]
                el.text = new
            else:
                cur = el.get(attrib)
                if not pos and len(cur) == len(link):
                    new = new_link  # most common case
                else:
                    new = cur[:pos] + new_link + cur[pos+len(link):]
                el.set(attrib, new)
def rewrite_links(self, link_repl_func, resolve_base_href=True,
                      base_href=None):
        """
        Rewrite all the links in the document.  For each link
        ``link_repl_func(link)`` will be called, and the return value
        will replace the old link.

        Note that links may not be absolute (unless you first called
        ``make_links_absolute()``), and may be internal (e.g.,
        ``'#anchor'``).  They can also be values like
        ``'mailto:email'`` or ``'javascript:expr'``.

        If you give ``base_href`` then all links passed to
        ``link_repl_func()`` will take that into account.

        If the ``link_repl_func`` returns None, the attribute or
        tag text will be removed completely.
        """
        if base_href is not None:
            # FIXME: this can be done in one pass with a wrapper
            # around link_repl_func
            self.make_links_absolute(
                base_href, resolve_base_href=resolve_base_href)
        elif resolve_base_href:
            self.resolve_base_href()

        for el, attrib, link, pos in self.iterlinks():
            new_link = link_repl_func(link.strip())
            if new_link == link:
                continue
            if new_link is None:
                # Remove the attribute or element content
                if attrib is None:
                    el.text = ''
                else:
                    del el.attrib[attrib]
                continue

            if attrib is None:
                new = el.text[:pos] + new_link + el.text[pos+len(link):]
                el.text = new
            else:
                cur = el.get(attrib)
                if not pos and len(cur) == len(link):
                    new = new_link  # most common case
                else:
                    new = cur[:pos] + new_link + cur[pos+len(link):]
                el.set(attrib, new)
Rewrite all the links in the document.  For each link
        ``link_repl_func(link)`` will be called, and the return value
        will replace the old link.

        Note that links may not be absolute (unless you first called
        ``make_links_absolute()``), and may be internal (e.g.,
        ``'#anchor'``).  They can also be values like
        ``'mailto:email'`` or ``'javascript:expr'``.

        If you give ``base_href`` then all links passed to
        ``link_repl_func()`` will take that into account.

        If the ``link_repl_func`` returns None, the attribute or
        tag text will be removed completely.