Пример #1
0
def _get_form(
    response: TextResponse,
    formname: Optional[str],
    formid: Optional[str],
    formnumber: Optional[int],
    formxpath: Optional[str],
) -> FormElement:
    """Find the wanted form element within the given response."""
    root = create_root_node(response.text,
                            HTMLParser,
                            base_url=get_base_url(response))
    forms = root.xpath('//form')
    if not forms:
        raise ValueError(f"No <form> element found in {response}")

    if formname is not None:
        f = root.xpath(f'//form[@name="{formname}"]')
        if f:
            return f[0]

    if formid is not None:
        f = root.xpath(f'//form[@id="{formid}"]')
        if f:
            return f[0]

    # Get form element from xpath, if not found, go up
    if formxpath is not None:
        nodes = root.xpath(formxpath)
        if nodes:
            el = nodes[0]
            while True:
                if el.tag == 'form':
                    return el
                el = el.getparent()
                if el is None:
                    break
        raise ValueError(f'No <form> element found with {formxpath}')

    # If we get here, it means that either formname was None or invalid
    if formnumber is not None:
        try:
            form = forms[formnumber]
        except IndexError:
            raise IndexError(
                f"Form number {formnumber} not found in {response}")
        else:
            return form
Пример #2
0
def _get_form(response, formname, formid, formnumber, formxpath):
    """Find the form element """
    root = create_root_node(response.text,
                            lxml.html.HTMLParser,
                            base_url=get_base_url(response))
    forms = root.xpath('//form')
    if not forms:
        return None  #todo:mmmm
        raise ValueError("No <form> element found in %s" % response)

    if formname is not None:
        f = root.xpath('//form[@name="%s"]' % formname)
        if f:
            return f[0]

    if formid is not None:
        f = root.xpath('//form[@id="%s"]' % formid)
        if f:
            return f[0]

    # Get form element from xpath, if not found, go up
    if formxpath is not None:
        nodes = root.xpath(formxpath)
        if nodes:
            el = nodes[0]
            while True:
                if el.tag == 'form':
                    return el
                el = el.getparent()
                if el is None:
                    break
        encoded = formxpath if six.PY3 else formxpath.encode('unicode_escape')
        raise ValueError('No <form> element found with %s' % encoded)

    # If we get here, it means that either formname was None
    # or invalid
    if formnumber is not None:
        try:
            form = forms[formnumber]
        except IndexError:
            raise IndexError("Form number %d not found in %s" %
                             (formnumber, response))
        else:
            return form
Пример #3
0
Файл: form.py Проект: 01-/scrapy
def _get_form(response, formname, formid, formnumber, formxpath):
    """Find the form element """
    root = create_root_node(response.text, lxml.html.HTMLParser,
                            base_url=get_base_url(response))
    forms = root.xpath('//form')
    if not forms:
        raise ValueError("No <form> element found in %s" % response)

    if formname is not None:
        f = root.xpath('//form[@name="%s"]' % formname)
        if f:
            return f[0]

    if formid is not None:
        f = root.xpath('//form[@id="%s"]' % formid)
        if f:
            return f[0]

    # Get form element from xpath, if not found, go up
    if formxpath is not None:
        nodes = root.xpath(formxpath)
        if nodes:
            el = nodes[0]
            while True:
                if el.tag == 'form':
                    return el
                el = el.getparent()
                if el is None:
                    break
        encoded = formxpath if six.PY3 else formxpath.encode('unicode_escape')
        raise ValueError('No <form> element found with %s' % encoded)

    # If we get here, it means that either formname was None
    # or invalid
    if formnumber is not None:
        try:
            form = forms[formnumber]
        except IndexError:
            raise IndexError("Form number %d not found in %s" %
                             (formnumber, response))
        else:
            return form
Пример #4
0
def _get_form(response, formname, formid, formnumber, formxpath):
    """Find the form element """
    root = create_root_node(response.text,
                            lxml.html.HTMLParser,
                            base_url=get_base_url(response))
    forms = root.xpath("//form")
    if not forms:
        raise ValueError(f"No <form> element found in {response}")

    if formname is not None:
        f = root.xpath(f'//form[@name="{formname}"]')
        if f:
            return f[0]

    if formid is not None:
        f = root.xpath(f'//form[@id="{formid}"]')
        if f:
            return f[0]

    # Get form element from xpath, if not found, go up
    if formxpath is not None:
        nodes = root.xpath(formxpath)
        if nodes:
            el = nodes[0]
            while True:
                if el.tag == "form":
                    return el
                el = el.getparent()
                if el is None:
                    break
        raise ValueError(f"No <form> element found with {formxpath}")

    # If we get here, it means that either formname was None
    # or invalid
    if formnumber is not None:
        try:
            form = forms[formnumber]
        except IndexError:
            raise IndexError(
                f"Form number {formnumber} not found in {response}")
        else:
            return form
Пример #5
0
def parse_html(html):
    """ Create an lxml.html.HtmlElement from a string with html.
    """
    return create_root_node(html, lxml.html.HTMLParser)