def __call__(self, values):
new_values = []
for v in arg_to_iter(values):
if isinstance(v, (str, unicode)):
v = remove_entities(v).strip()
new_values.append(int(v))
return new_values
def text(region):
"""Converts HTML to text. There is no attempt at formatting other than
removing excessive whitespace,
For example:
>>> t = lambda s: text(htmlregion(s))
>>> t(u'<h1>test</h1>')
u'test'
Leading and trailing whitespace are removed
>>> t(u'<h1> test</h1> ')
u'test'
Comments are removed
>>> t(u'test <!-- this is a comment --> me')
u'test me'
Text between script tags is ignored
>>> t(u"scripts are<script>n't</script> ignored")
u'scripts are ignored'
HTML entities are converted to text
>>> t(u"only £42")
u'only \\xa342'
"""
chunks = _process_markup(
region,
lambda text: remove_entities(text, encoding=region.htmlpage.encoding),
lambda tag: u' ')
text = u''.join(chunks)
return _WS.sub(u' ', text).strip()
def text(region):
"""Converts HTML to text. There is no attempt at formatting other than
removing excessive whitespace,
For example:
>>> t = lambda s: text(htmlregion(s))
>>> t(u'<h1>test</h1>')
u'test'
Leading and trailing whitespace are removed
>>> t(u'<h1> test</h1> ')
u'test'
Comments are removed
>>> t(u'test <!-- this is a comment --> me')
u'test me'
Text between script tags is ignored
>>> t(u"scripts are<script>n't</script> ignored")
u'scripts are ignored'
HTML entities are converted to text
>>> t(u"only £42")
u'only \\xa342'
"""
chunks = _process_markup(region,
lambda text: remove_entities(text, encoding=region.htmlpage.encoding),
lambda tag: u' '
)
text = u''.join(chunks)
return _WS.sub(u' ', text).strip()
def mklink(url, anchortext=None, nofollow=False):
url = url.strip()
fullurl = urljoin(base_href,
remove_entities(url, encoding=htmlpage.encoding))
return Link(fullurl.encode(htmlpage.encoding),
text=anchortext,
nofollow=nofollow)
def __call__(self, values):
new_values = []
for v in arg_to_iter(values):
if isinstance(v, (str, unicode)):
v = remove_entities(v).strip()
new_values.append(int(v))
return new_values
def __call__(self, values):
new_values = []
for v in arg_to_iter(values):
if isinstance(v, (str, unicode)):
v = remove_entities(v).strip()
v = v.lower() == "true"
else:
v = bool(v)
new_values.append(v)
return new_values
def _extract_links(self, response_text, response_url, response_encoding):
base_url = self.base_url if self.base_url else response_url
clean_url = lambda u: urljoin_rfc(base_url, remove_entities(clean_link(u.decode(response_encoding))))
clean_text = lambda t: replace_escape_chars(remove_tags(t.decode(response_encoding))).strip()
links_text = linkre.findall(response_text)
urlstext = set([(clean_url(url), clean_text(text)) for url, _, text in links_text])
return [Link(url, text) for url, text in urlstext]
def __call__(self, values):
new_values = []
for v in arg_to_iter(values):
if isinstance(v, (str, unicode)):
v = remove_entities(v).strip()
v = (v.lower() == 'true')
else:
v = bool(v)
new_values.append(v)
return new_values
def image_url(txt):
"""convert text to a url
this is quite conservative, since relative urls are supported
Example:
>>> image_url('')
>>> image_url(' ')
>>> image_url(' \\n\\n ')
>>> image_url('foo-bar.jpg')
['foo-bar.jpg']
>>> image_url('/images/main_logo12.gif')
['/images/main_logo12.gif']
>>> image_url("http://www.image.com/image.jpg")
['http://www.image.com/image.jpg']
>>> image_url("http://www.domain.com/path1/path2/path3/image.jpg")
['http://www.domain.com/path1/path2/path3/image.jpg']
>>> image_url("/path1/path2/path3/image.jpg")
['/path1/path2/path3/image.jpg']
>>> image_url("path1/path2/image.jpg")
['path1/path2/image.jpg']
>>> image_url("background-image : url(http://www.site.com/path1/path2/image.jpg)")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background-image : url('http://www.site.com/path1/path2/image.jpg')")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('background-image : url("http://www.site.com/path1/path2/image.jpg")')
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background : url(http://www.site.com/path1/path2/image.jpg)")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background : url('http://www.site.com/path1/path2/image.jpg')")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('background : url("http://www.site.com/path1/path2/image.jpg")')
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350')
['/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350']
>>> image_url('http://www.site.com/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350')
['http://www.site.com/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350']
>>> image_url('http://s7d4.scene7.com/is/image/Kohler/jaa03267?hei=425&wid=457&op_usm=2,1,2,1&qlt=80')
['http://s7d4.scene7.com/is/image/Kohler/jaa03267?hei=425&wid=457&op_usm=2,1,2,1&qlt=80']
>>> image_url('../image.aspx?thumb=true&boxSize=175&img=Unknoportrait[1].jpg')
['../image.aspx?thumb=true&boxSize=175&img=Unknoportrait%5B1%5D.jpg']
>>> image_url('http://www.sundancecatalog.com/mgen/catalog/test.ms?args=%2245932|MERIDIAN+PENDANT|.jpg%22&is=336,336,0xffffff')
['http://www.sundancecatalog.com/mgen/catalog/test.ms?args=%2245932|MERIDIAN+PENDANT|.jpg%22&is=336,336,0xffffff']
>>> image_url('http://www.site.com/image.php')
['http://www.site.com/image.php']
>>> image_url('background-image:URL(http://s7d5.scene7.com/is/image/wasserstrom/165133?wid=227&hei=227&defaultImage=noimage_wasserstrom)')
['http://s7d5.scene7.com/is/image/wasserstrom/165133?wid=227&hei=227&defaultImage=noimage_wasserstrom']
"""
imgurl = extract_image_url(txt)
return [safe_url_string(remove_entities(url(imgurl)))] if imgurl else None
def image_url(txt):
"""convert text to a url
this is quite conservative, since relative urls are supported
Example:
>>> image_url('')
>>> image_url(' ')
>>> image_url(' \\n\\n ')
>>> image_url('foo-bar.jpg')
['foo-bar.jpg']
>>> image_url('/images/main_logo12.gif')
['/images/main_logo12.gif']
>>> image_url("http://www.image.com/image.jpg")
['http://www.image.com/image.jpg']
>>> image_url("http://www.domain.com/path1/path2/path3/image.jpg")
['http://www.domain.com/path1/path2/path3/image.jpg']
>>> image_url("/path1/path2/path3/image.jpg")
['/path1/path2/path3/image.jpg']
>>> image_url("path1/path2/image.jpg")
['path1/path2/image.jpg']
>>> image_url("background-image : url(http://www.site.com/path1/path2/image.jpg)")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background-image : url('http://www.site.com/path1/path2/image.jpg')")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('background-image : url("http://www.site.com/path1/path2/image.jpg")')
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background : url(http://www.site.com/path1/path2/image.jpg)")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background : url('http://www.site.com/path1/path2/image.jpg')")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('background : url("http://www.site.com/path1/path2/image.jpg")')
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350')
['/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350']
>>> image_url('http://www.site.com/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350')
['http://www.site.com/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350']
>>> image_url('http://s7d4.scene7.com/is/image/Kohler/jaa03267?hei=425&wid=457&op_usm=2,1,2,1&qlt=80')
['http://s7d4.scene7.com/is/image/Kohler/jaa03267?hei=425&wid=457&op_usm=2,1,2,1&qlt=80']
>>> image_url('../image.aspx?thumb=true&boxSize=175&img=Unknoportrait[1].jpg')
['../image.aspx?thumb=true&boxSize=175&img=Unknoportrait%5B1%5D.jpg']
>>> image_url('http://www.sundancecatalog.com/mgen/catalog/test.ms?args=%2245932|MERIDIAN+PENDANT|.jpg%22&is=336,336,0xffffff')
['http://www.sundancecatalog.com/mgen/catalog/test.ms?args=%2245932|MERIDIAN+PENDANT|.jpg%22&is=336,336,0xffffff']
>>> image_url('http://www.site.com/image.php')
['http://www.site.com/image.php']
>>> image_url('background-image:URL(http://s7d5.scene7.com/is/image/wasserstrom/165133?wid=227&hei=227&defaultImage=noimage_wasserstrom)')
['http://s7d5.scene7.com/is/image/wasserstrom/165133?wid=227&hei=227&defaultImage=noimage_wasserstrom']
"""
imgurl = extract_image_url(txt)
return [safe_url_string(remove_entities(url(imgurl)))] if imgurl else None
def extract_regex(regex, text, encoding='utf-8'):
"""Extract a list of unicode strings from the given text/encoding using the following policies:
* if the regex contains a named group called "extract" that will be returned
* if the regex contains multiple numbered groups, all those will be returned (flattened)
* if the regex doesn't contain any group the entire regex matching is returned
"""
if isinstance(regex, basestring):
regex = re.compile(regex)
try:
strings = [regex.search(text).group('extract')] # named group
except:
strings = regex.findall(text) # full regex or numbered groups
strings = flatten(strings)
if isinstance(text, unicode):
return [remove_entities(s, keep=['lt', 'amp']) for s in strings]
else:
return [remove_entities(unicode(s, encoding), keep=['lt', 'amp']) for s in strings]
def _extract_links(self, response_text, response_url, response_encoding):
base_url = urljoin_rfc(
response_url, self.base_url) if self.base_url else response_url
clean_url = lambda u: urljoin_rfc(
base_url, remove_entities(clean_link(u.decode(response_encoding))))
clean_text = lambda t: replace_escape_chars(
remove_tags(t.decode(response_encoding))).strip()
links_text = linkre.findall(response_text)
urlstext = set([(clean_url(url), clean_text(text))
for url, _, text in links_text])
return [Link(url, text) for url, text in urlstext]
def extract_regex(regex, text, encoding='utf-8'):
"""Extract a list of unicode strings from the given text/encoding using the following policies:
* if the regex contains a named group called "extract" that will be returned
* if the regex contains multiple numbered groups, all those will be returned (flattened)
* if the regex doesn't contain any group the entire regex matching is returned
"""
if isinstance(regex, basestring):
regex = re.compile(regex)
try:
strings = [regex.search(text).group('extract')] # named group
except:
strings = regex.findall(text) # full regex or numbered groups
strings = flatten(strings)
if isinstance(text, unicode):
return [remove_entities(s, keep=['lt', 'amp']) for s in strings]
else:
return [
remove_entities(unicode(s, encoding), keep=['lt', 'amp'])
for s in strings
]
def get_meta_refresh(response):
"""Parse the http-equiv parameter of the HTML meta element from the given
response and return a tuple (interval, url) where interval is an integer
containing the delay in seconds (or zero if not present) and url is a
string with the absolute url to redirect.
If no meta redirect is found, (None, None) is returned.
"""
if response not in _metaref_cache:
body_chunk = remove_comments(remove_entities(response.body_as_unicode()[0:4096]))
match = META_REFRESH_RE.search(body_chunk)
if match:
interval = float(match.group('int'))
url = safe_url_string(match.group('url').strip(' "\''))
url = urljoin_rfc(response.url, url)
_metaref_cache[response] = (interval, url)
else:
_metaref_cache[response] = (None, None)
#_metaref_cache[response] = match.groups() if match else (None, None)
return _metaref_cache[response]
def get_meta_refresh(response):
"""Parse the http-equiv parameter of the HTML meta element from the given
response and return a tuple (interval, url) where interval is an integer
containing the delay in seconds (or zero if not present) and url is a
string with the absolute url to redirect.
If no meta redirect is found, (None, None) is returned.
"""
if response not in _metaref_cache:
body_chunk = remove_comments(
remove_entities(response.body_as_unicode()[0:4096]))
match = META_REFRESH_RE.search(body_chunk)
if match:
interval = float(match.group('int'))
url = safe_url_string(match.group('url').strip(' "\''))
url = urljoin_rfc(response.url, url)
_metaref_cache[response] = (interval, url)
else:
_metaref_cache[response] = (None, None)
#_metaref_cache[response] = match.groups() if match else (None, None)
return _metaref_cache[response]
def get_meta_refresh(response):
"""Parse the http-equiv parameter of the HTML meta element from the given
response and return a tuple (interval, url) where interval is an integer
containing the delay in seconds (or zero if not present) and url is a
string with the absolute url to redirect.
If no meta redirect is found, (None, None) is returned.
"""
if response not in _metaref_cache:
body_chunk = remove_comments(remove_entities(response.body_as_unicode()[0:4096]))
for match1 in META_TAG_RE.finditer(body_chunk):
params = {}
for match2 in META_TAG_ATTRS_RE.finditer(match1.group(1)):
params[match2.group("key")] = match2.group("value")
if params.get("http-equiv") == "refresh":
match = META_CONTENT_RE.search(params.get("content", ""))
if match:
interval = float(match.group("int"))
url = urljoin_rfc(response.url, safe_url_string((match.group("url") or "").strip(' "\'')))
_metaref_cache[response] = (interval, url)
return (interval, url)
_metaref_cache[response] = (None, None)
return _metaref_cache[response]
def mklink(url, anchortext=None, nofollow=False):
url = url.strip()
fullurl = urljoin(base_href, remove_entities(url, encoding=htmlpage.encoding))
return Link(fullurl.encode(htmlpage.encoding), text=anchortext, nofollow=nofollow)
def __call__(self, values):
return [remove_entities(v) for v in arg_to_iter(values)]
def iterlinks(htmlpage):
"""Iterate through the links in the HtmlPage passed
For example:
>>> from scrapely.htmlpage import HtmlPage
>>> p = HtmlPage(body=u"Please visit <a href='http://scrapinghub.com/'>Scrapinghub</a>")
>>> iterlinks(p).next()
Link(url='http://scrapinghub.com/', text=u'Scrapinghub', fragment='', nofollow=False)
>>> p = HtmlPage(body=u"Go <a href='home.html'>Home</a>")
>>> iterlinks(p).next()
Link(url='home.html', text=u'Home', fragment='', nofollow=False)
When a url is specified, absolute urls are made:
>>> p.url = 'http://scrapinghub.com/'
>>> iterlinks(p).next()
Link(url='http://scrapinghub.com/home.html', text=u'Home', fragment='', nofollow=False)
Base href attributes in the page are respected
>>> p.body = u"<html><head><base href='myproject/'/></head><body>see my <a href='index.html'>project</a></body>"
>>> iterlinks(p).next()
Link(url='http://scrapinghub.com/myproject/index.html', text=u'project', fragment='', nofollow=False)
>>> p.body = u"<html><head><base href='http://scrape.io/myproject/'/></head><body>see my <a href='index.html'>project</a></body>"
>>> iterlinks(p).next()
Link(url='http://scrape.io/myproject/index.html', text=u'project', fragment='', nofollow=False)
Frameset and iframe urls are extracted
>>> p = HtmlPage(body=u"<html><frameset><frame src=frame1.html><frame src=frame2.html></frameset><iframe src='iframe.html'/></html>")
>>> [l.url for l in iterlinks(p)]
['frame1.html', 'frame2.html', 'iframe.html']
As are meta refresh tags:
>>> p = HtmlPage(body=u"<html><head><meta http-equiv='refresh' content='5;url=http://example.com/' />")
>>> iterlinks(p).next().url
'http://example.com/'
nofollow is set to True if the link has a rel='nofollow' attribute:
>>> p = HtmlPage(body=u"<a href='somewhere.html' rel='nofollow'>somewhere</a>")
>>> list(iterlinks(p))
[Link(url='somewhere.html', text=u'somewhere', fragment='', nofollow=True)]
It does not require well formed HTML and behaves similar to many browsers
>>> p = HtmlPage(body=u"<a href='foo'>foo <a href=bar>bar</a><a href='baz'/>baz")
>>> list(iterlinks(p))
[Link(url='foo', text=u'foo ', fragment='', nofollow=False), Link(url='bar', text=u'bar', fragment='', nofollow=False), Link(url='baz', text=u'baz', fragment='', nofollow=False)]
Leading and trailing whitespace should be removed, including in base href
>>> p = HtmlPage(body=u"<head><base href=' foo/ '/></head><a href='bar '/>baz")
>>> list(iterlinks(p))
[Link(url='foo/bar', text=u'baz', fragment='', nofollow=False)]
Test standard onclick links
>>> p = HtmlPage(url="http://www.example.com", body=u"<html><td onclick=window.open('page.html?productid=23','win2') >")
>>> list(iterlinks(p))
[Link(url='http://www.example.com/page.html?productid=23', text=None, fragment='', nofollow=False)]
>>> p = HtmlPage("http://www.example.com", body=u"<html><a href='#' onclick=window.open('page.html?productid=24','win2') >")
>>> list(iterlinks(p))
[Link(url='http://www.example.com/page.html?productid=24', text=None, fragment='', nofollow=False)]
>>> p = HtmlPage(body=u"<html><div onclick=window.location.href='http://www.jungleberry.co.uk/Fair-Trade-Earrings/Aguas-Earrings.htm'>")
>>> list(iterlinks(p))
[Link(url='http://www.jungleberry.co.uk/Fair-Trade-Earrings/Aguas-Earrings.htm', text=None, fragment='', nofollow=False)]
Onclick with no href
>>> p = HtmlPage("http://www.example.com", body=u"<html><a onclick=window.open('page.html?productid=24','win2') >")
>>> list(iterlinks(p))
[Link(url='http://www.example.com/page.html?productid=24', text=None, fragment='', nofollow=False)]
Dont generate link when target is an anchor
>>> p = HtmlPage("http://www.example.com", body=u"<html><a href='#section1' >")
>>> list(iterlinks(p))
[]
Extract links from <link> tags in page header
>>> p = HtmlPage("http://example.blogspot.com/", body=u"<html><head><link rel='me' href='http://www.blogger.com/profile/987372' /></head><body>This is my body!</body></html>")
>>> list(iterlinks(p))
[Link(url='http://www.blogger.com/profile/987372', text=None, fragment='', nofollow=False)]
"""
base_href = remove_entities(htmlpage.url, encoding=htmlpage.encoding)
def mklink(url, anchortext=None, nofollow=False):
url = url.strip()
fullurl = urljoin(base_href,
remove_entities(url, encoding=htmlpage.encoding))
return Link(fullurl.encode(htmlpage.encoding),
text=anchortext,
nofollow=nofollow)
# iter to quickly scan only tags
tag_iter = (t for t in htmlpage.parsed_body if isinstance(t, HtmlTag))
# parse body
astart = ahref = None
nofollow = False
for nexttag in tag_iter:
tagname = nexttag.tag
attributes = nexttag.attributes
if tagname == 'a' and (nexttag.tag_type == HtmlTagType.CLOSE_TAG or attributes.get('href') \
and not attributes.get('href', '').startswith('#')):
if astart:
yield mklink(ahref, htmlpage.body[astart:nexttag.start],
nofollow)
astart = ahref = None
nofollow = False
href = attributes.get('href')
if href:
ahref = href
astart = nexttag.end
nofollow = attributes.get('rel') == u'nofollow'
elif tagname == 'head':
# scan ahead until end of head section
for nexttag in tag_iter:
tagname = nexttag.tag
if (tagname == 'head' and \
nexttag.tag_type == HtmlTagType.CLOSE_TAG) or \
tagname == 'body':
break
if tagname == 'base':
href = nexttag.attributes.get('href')
if href:
joined_base = urljoin(htmlpage.url, href.strip(),
htmlpage.encoding)
base_href = remove_entities(joined_base,
encoding=htmlpage.encoding)
elif tagname == 'meta':
attrs = nexttag.attributes
if attrs.get('http-equiv') == 'refresh':
m = _META_REFRESH_CONTENT_RE.search(
attrs.get('content', ''))
if m:
target = m.group('url')
if target:
yield mklink(target)
elif tagname == 'link':
href = nexttag.attributes.get('href')
if href:
yield mklink(href)
elif tagname == 'area':
href = attributes.get('href')
if href:
nofollow = attributes.get('rel') == u'nofollow'
yield mklink(href, attributes.get('alt', ''), nofollow)
elif tagname in ('frame', 'iframe'):
target = attributes.get('src')
if target:
yield mklink(target)
elif 'onclick' in attributes:
match = _ONCLICK_LINK_RE.search(attributes["onclick"] or "")
if not match:
continue
target = match.group("url")
nofollow = attributes.get('rel') == u'nofollow'
yield mklink(target, nofollow=nofollow)
if astart:
yield mklink(ahref, htmlpage.body[astart:])
def iterlinks(htmlpage):
"""Iterate through the links in the HtmlPage passed
For example:
>>> from scrapely.htmlpage import HtmlPage
>>> p = HtmlPage(body=u"Please visit <a href='http://scrapinghub.com/'>Scrapinghub</a>")
>>> iterlinks(p).next()
Link(url='http://scrapinghub.com/', text=u'Scrapinghub', fragment='', nofollow=False)
>>> p = HtmlPage(body=u"Go <a href='home.html'>Home</a>")
>>> iterlinks(p).next()
Link(url='home.html', text=u'Home', fragment='', nofollow=False)
When a url is specified, absolute urls are made:
>>> p.url = 'http://scrapinghub.com/'
>>> iterlinks(p).next()
Link(url='http://scrapinghub.com/home.html', text=u'Home', fragment='', nofollow=False)
Base href attributes in the page are respected
>>> p.body = u"<html><head><base href='myproject/'/></head><body>see my <a href='index.html'>project</a></body>"
>>> iterlinks(p).next()
Link(url='http://scrapinghub.com/myproject/index.html', text=u'project', fragment='', nofollow=False)
>>> p.body = u"<html><head><base href='http://scrape.io/myproject/'/></head><body>see my <a href='index.html'>project</a></body>"
>>> iterlinks(p).next()
Link(url='http://scrape.io/myproject/index.html', text=u'project', fragment='', nofollow=False)
Frameset and iframe urls are extracted
>>> p = HtmlPage(body=u"<html><frameset><frame src=frame1.html><frame src=frame2.html></frameset><iframe src='iframe.html'/></html>")
>>> [l.url for l in iterlinks(p)]
['frame1.html', 'frame2.html', 'iframe.html']
As are meta refresh tags:
>>> p = HtmlPage(body=u"<html><head><meta http-equiv='refresh' content='5;url=http://example.com/' />")
>>> iterlinks(p).next().url
'http://example.com/'
nofollow is set to True if the link has a rel='nofollow' attribute:
>>> p = HtmlPage(body=u"<a href='somewhere.html' rel='nofollow'>somewhere</a>")
>>> list(iterlinks(p))
[Link(url='somewhere.html', text=u'somewhere', fragment='', nofollow=True)]
It does not require well formed HTML and behaves similar to many browsers
>>> p = HtmlPage(body=u"<a href='foo'>foo <a href=bar>bar</a><a href='baz'/>baz")
>>> list(iterlinks(p))
[Link(url='foo', text=u'foo ', fragment='', nofollow=False), Link(url='bar', text=u'bar', fragment='', nofollow=False), Link(url='baz', text=u'baz', fragment='', nofollow=False)]
Leading and trailing whitespace should be removed, including in base href
>>> p = HtmlPage(body=u"<head><base href=' foo/ '/></head><a href='bar '/>baz")
>>> list(iterlinks(p))
[Link(url='foo/bar', text=u'baz', fragment='', nofollow=False)]
Test standard onclick links
>>> p = HtmlPage(url="http://www.example.com", body=u"<html><td onclick=window.open('page.html?productid=23','win2') >")
>>> list(iterlinks(p))
[Link(url='http://www.example.com/page.html?productid=23', text=None, fragment='', nofollow=False)]
>>> p = HtmlPage("http://www.example.com", body=u"<html><a href='#' onclick=window.open('page.html?productid=24','win2') >")
>>> list(iterlinks(p))
[Link(url='http://www.example.com/page.html?productid=24', text=None, fragment='', nofollow=False)]
>>> p = HtmlPage(body=u"<html><div onclick=window.location.href='http://www.jungleberry.co.uk/Fair-Trade-Earrings/Aguas-Earrings.htm'>")
>>> list(iterlinks(p))
[Link(url='http://www.jungleberry.co.uk/Fair-Trade-Earrings/Aguas-Earrings.htm', text=None, fragment='', nofollow=False)]
Onclick with no href
>>> p = HtmlPage("http://www.example.com", body=u"<html><a onclick=window.open('page.html?productid=24','win2') >")
>>> list(iterlinks(p))
[Link(url='http://www.example.com/page.html?productid=24', text=None, fragment='', nofollow=False)]
Dont generate link when target is an anchor
>>> p = HtmlPage("http://www.example.com", body=u"<html><a href='#section1' >")
>>> list(iterlinks(p))
[]
"""
base_href = remove_entities(htmlpage.url, encoding=htmlpage.encoding)
def mklink(url, anchortext=None, nofollow=False):
url = url.strip()
fullurl = urljoin(base_href, remove_entities(url, encoding=htmlpage.encoding))
return Link(fullurl.encode(htmlpage.encoding), text=anchortext, nofollow=nofollow)
# iter to quickly scan only tags
tag_iter = (t for t in htmlpage.parsed_body if isinstance(t, HtmlTag))
# parse body
astart = ahref = None
nofollow = False
for nexttag in tag_iter:
tagname = nexttag.tag
attributes = nexttag.attributes
if tagname == 'a' and (nexttag.tag_type == HtmlTagType.CLOSE_TAG or attributes.get('href') \
and not attributes.get('href', '').startswith('#')):
if astart:
yield mklink(ahref, htmlpage.body[astart:nexttag.start], nofollow)
astart = ahref = None
nofollow = False
href = attributes.get('href')
if href:
ahref = href
astart = nexttag.end
nofollow = attributes.get('rel') == u'nofollow'
elif tagname == 'head':
# scan ahead until end of head section
for nexttag in tag_iter:
tagname = nexttag.tag
if (tagname == 'head' and \
nexttag.tag_type == HtmlTagType.CLOSE_TAG) or \
tagname == 'body':
break
if tagname == 'base':
href = nexttag.attributes.get('href')
if href:
joined_base = urljoin(htmlpage.url, href.strip(),
htmlpage.encoding)
base_href = remove_entities(joined_base,
encoding=htmlpage.encoding)
elif tagname == 'meta':
attrs = nexttag.attributes
if attrs.get('http-equiv') == 'refresh':
m = _META_REFRESH_CONTENT_RE.search(attrs.get('content', ''))
if m:
target = m.group('url')
if target:
yield mklink(target)
elif tagname == 'area':
href = attributes.get('href')
if href:
nofollow = attributes.get('rel') == u'nofollow'
yield mklink(href, attributes.get('alt', ''), nofollow)
elif tagname in ('frame', 'iframe'):
target = attributes.get('src')
if target:
yield mklink(target)
elif 'onclick' in attributes:
match = _ONCLICK_LINK_RE.search(attributes["onclick"] or "")
if not match:
continue
target = match.group("url")
nofollow = attributes.get('rel') == u'nofollow'
yield mklink(target, nofollow=nofollow)
if astart:
yield mklink(ahref, htmlpage.body[astart:])
def test_remove_entities(self):
# make sure it always return uncode
assert isinstance(remove_entities('no entities'), unicode)
assert isinstance(remove_entities('Price: £100!'), unicode)
# regular conversions
self.assertEqual(remove_entities(u'As low as £100!'),
u'As low as \xa3100!')
self.assertEqual(remove_entities('As low as £100!'),
u'As low as \xa3100!')
self.assertEqual(remove_entities('redirectTo=search&searchtext=MR0221Y&aff=buyat&affsrc=d_data&cm_mmc=buyat-_-ELECTRICAL & SEASONAL-_-MR0221Y-_-9-carat gold ½oz solid crucifix pendant'),
u'redirectTo=search&searchtext=MR0221Y&aff=buyat&affsrc=d_data&cm_mmc=buyat-_-ELECTRICAL & SEASONAL-_-MR0221Y-_-9-carat gold \xbdoz solid crucifix pendant')
# keep some entities
self.assertEqual(remove_entities('<b>Low < High & Medium £ six</b>', keep=['lt', 'amp']),
u'<b>Low < High & Medium \xa3 six</b>')
# illegal entities
self.assertEqual(remove_entities('a < b &illegal; c � six', remove_illegal=False),
u'a < b &illegal; c � six')
self.assertEqual(remove_entities('a < b &illegal; c � six', remove_illegal=True),
u'a < b c six')
self.assertEqual(remove_entities('x≤y'), u'x\u2264y')
# check browser hack for numeric character references in the 80-9F range
self.assertEqual(remove_entities('x™y', encoding='cp1252'), u'x\u2122y')
# encoding
self.assertEqual(remove_entities('x\x99™™y', encoding='cp1252'), \
u'x\u2122\u2122\u2122y')
def image_url(txt):
"""convert text to a url
this is quite conservative, since relative urls are supported
Example:
>>> image_url('')
>>> image_url(' ')
>>> image_url(' \\n\\n ')
>>> image_url('foo-bar.jpg')
['foo-bar.jpg']
>>> image_url('/images/main_logo12.gif')
['/images/main_logo12.gif']
>>> image_url("http://www.image.com/image.jpg")
['http://www.image.com/image.jpg']
>>> image_url("http://www.domain.com/path1/path2/path3/image.jpg")
['http://www.domain.com/path1/path2/path3/image.jpg']
>>> image_url("/path1/path2/path3/image.jpg")
['/path1/path2/path3/image.jpg']
>>> image_url("path1/path2/image.jpg")
['path1/path2/image.jpg']
>>> image_url("background-image : url(http://www.site.com/path1/path2/image.jpg)")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background-image : url('http://www.site.com/path1/path2/image.jpg')")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('background-image : url("http://www.site.com/path1/path2/image.jpg")')
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background : url(http://www.site.com/path1/path2/image.jpg)")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background : url('http://www.site.com/path1/path2/image.jpg')")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('background : url("http://www.site.com/path1/path2/image.jpg")')
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350')
['/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350']
>>> image_url('http://www.site.com/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350')
['http://www.site.com/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350']
>>> image_url('http://s7d4.scene7.com/is/image/Kohler/jaa03267?hei=425&wid=457&op_usm=2,1,2,1&qlt=80')
['http://s7d4.scene7.com/is/image/Kohler/jaa03267?hei=425&wid=457&op_usm=2,1,2,1&qlt=80']
>>> image_url('../image.aspx?thumb=true&boxSize=175&img=Unknoportrait[1].jpg')
['../image.aspx?thumb=true&boxSize=175&img=Unknoportrait%5B1%5D.jpg']
>>> image_url('http://www.sundancecatalog.com/mgen/catalog/test.ms?args=%2245932|MERIDIAN+PENDANT|.jpg%22&is=336,336,0xffffff')
['http://www.sundancecatalog.com/mgen/catalog/test.ms?args=%2245932|MERIDIAN+PENDANT|.jpg%22&is=336,336,0xffffff']
>>> image_url('http://www.site.com/image.php')
['http://www.site.com/image.php']
>>> image_url('background-image:URL(http://s7d5.scene7.com/is/image/wasserstrom/165133?wid=227&hei=227&defaultImage=noimage_wasserstrom)')
['http://s7d5.scene7.com/is/image/wasserstrom/165133?wid=227&hei=227&defaultImage=noimage_wasserstrom']
"""
txt = url(txt)
imgurl = None
if txt:
# check if the text is style content
m = _CSS_IMAGERE.search(txt)
txt = m.groups()[0] if m else txt
parsed = urlparse.urlparse(txt)
path = None
m = _IMAGE_PATH_RE.search(parsed.path)
if m:
path = m.group()
elif parsed.query:
m = _GENERIC_PATH_RE.search(parsed.path)
if m:
path = m.group()
if path is not None:
parsed = list(parsed)
parsed[2] = path
imgurl = urlparse.urlunparse(parsed)
if not imgurl:
imgurl = txt
return [safe_url_string(remove_entities(url(imgurl)))] if imgurl else None
def test_remove_entities(self):
# make sure it always return uncode
assert isinstance(remove_entities('no entities'), unicode)
assert isinstance(remove_entities('Price: £100!'), unicode)
# regular conversions
self.assertEqual(remove_entities(u'As low as £100!'),
u'As low as \xa3100!')
self.assertEqual(remove_entities('As low as £100!'),
u'As low as \xa3100!')
self.assertEqual(
remove_entities(
'redirectTo=search&searchtext=MR0221Y&aff=buyat&affsrc=d_data&cm_mmc=buyat-_-ELECTRICAL & SEASONAL-_-MR0221Y-_-9-carat gold ½oz solid crucifix pendant'
),
u'redirectTo=search&searchtext=MR0221Y&aff=buyat&affsrc=d_data&cm_mmc=buyat-_-ELECTRICAL & SEASONAL-_-MR0221Y-_-9-carat gold \xbdoz solid crucifix pendant'
)
# keep some entities
self.assertEqual(
remove_entities('<b>Low < High & Medium £ six</b>',
keep=['lt', 'amp']),
u'<b>Low < High & Medium \xa3 six</b>')
# illegal entities
self.assertEqual(
remove_entities('a < b &illegal; c � six',
remove_illegal=False),
u'a < b &illegal; c � six')
self.assertEqual(
remove_entities('a < b &illegal; c � six',
remove_illegal=True), u'a < b c six')
self.assertEqual(remove_entities('x≤y'), u'x\u2264y')
# check browser hack for numeric character references in the 80-9F range
self.assertEqual(remove_entities('x™y', encoding='cp1252'),
u'x\u2122y')
# encoding
self.assertEqual(remove_entities('x\x99™™y', encoding='cp1252'), \
u'x\u2122\u2122\u2122y')
def image_url(txt):
"""convert text to a url
this is quite conservative, since relative urls are supported
Example:
>>> image_url('')
>>> image_url(' ')
>>> image_url(' \\n\\n ')
>>> image_url('foo-bar.jpg')
['foo-bar.jpg']
>>> image_url('/images/main_logo12.gif')
['/images/main_logo12.gif']
>>> image_url("http://www.image.com/image.jpg")
['http://www.image.com/image.jpg']
>>> image_url("http://www.domain.com/path1/path2/path3/image.jpg")
['http://www.domain.com/path1/path2/path3/image.jpg']
>>> image_url("/path1/path2/path3/image.jpg")
['/path1/path2/path3/image.jpg']
>>> image_url("path1/path2/image.jpg")
['path1/path2/image.jpg']
>>> image_url("background-image : url(http://www.site.com/path1/path2/image.jpg)")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background-image : url('http://www.site.com/path1/path2/image.jpg')")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('background-image : url("http://www.site.com/path1/path2/image.jpg")')
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background : url(http://www.site.com/path1/path2/image.jpg)")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url("background : url('http://www.site.com/path1/path2/image.jpg')")
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('background : url("http://www.site.com/path1/path2/image.jpg")')
['http://www.site.com/path1/path2/image.jpg']
>>> image_url('/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350')
['/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350']
>>> image_url('http://www.site.com/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350')
['http://www.site.com/getimage.php?image=totalgardens/outbbq2_400.jpg&type=prod&resizeto=350']
>>> image_url('http://s7d4.scene7.com/is/image/Kohler/jaa03267?hei=425&wid=457&op_usm=2,1,2,1&qlt=80')
['http://s7d4.scene7.com/is/image/Kohler/jaa03267?hei=425&wid=457&op_usm=2,1,2,1&qlt=80']
>>> image_url('../image.aspx?thumb=true&boxSize=175&img=Unknoportrait[1].jpg')
['../image.aspx?thumb=true&boxSize=175&img=Unknoportrait%5B1%5D.jpg']
>>> image_url('http://www.sundancecatalog.com/mgen/catalog/test.ms?args=%2245932|MERIDIAN+PENDANT|.jpg%22&is=336,336,0xffffff')
['http://www.sundancecatalog.com/mgen/catalog/test.ms?args=%2245932|MERIDIAN+PENDANT|.jpg%22&is=336,336,0xffffff']
>>> image_url('http://www.site.com/image.php')
['http://www.site.com/image.php']
>>> image_url('background-image:URL(http://s7d5.scene7.com/is/image/wasserstrom/165133?wid=227&hei=227&defaultImage=noimage_wasserstrom)')
['http://s7d5.scene7.com/is/image/wasserstrom/165133?wid=227&hei=227&defaultImage=noimage_wasserstrom']
"""
txt = url(txt)
imgurl = None
if txt:
# check if the text is style content
m = _CSS_IMAGERE.search(txt)
txt = m.groups()[0] if m else txt
parsed = urlparse.urlparse(txt)
path = None
m = _IMAGE_PATH_RE.search(parsed.path)
if m:
path = m.group()
elif parsed.query:
m = _GENERIC_PATH_RE.search(parsed.path)
if m:
path = m.group()
if path is not None:
parsed = list(parsed)
parsed[2] = path
imgurl = urlparse.urlunparse(parsed)
if not imgurl:
imgurl = txt
return [safe_url_string(remove_entities(url(imgurl)))] if imgurl else None
def iterlinks(htmlpage):
"""Iterate through the links in the HtmlPage passed
For example:
>>> from scrapely.htmlpage import HtmlPage
>>> p = HtmlPage(body=u"Please visit <a href='http://scrapinghub.com/'>Scrapinghub</a>")
>>> iterlinks(p).next()
Link(url='http://scrapinghub.com/', text=u'Scrapinghub', fragment='', nofollow=False)
>>> p = HtmlPage(body=u"Go <a href='home.html'>Home</a>")
>>> iterlinks(p).next()
Link(url='home.html', text=u'Home', fragment='', nofollow=False)
When a url is specified, absolute urls are made:
>>> p.url = 'http://scrapinghub.com/'
>>> iterlinks(p).next()
Link(url='http://scrapinghub.com/home.html', text=u'Home', fragment='', nofollow=False)
Base href attributes in the page are respected
>>> p.body = u"<html><head><base href='myproject/'/></head><body>see my <a href='index.html'>project</a></body>"
>>> iterlinks(p).next()
Link(url='http://scrapinghub.com/myproject/index.html', text=u'project', fragment='', nofollow=False)
>>> p.body = u"<html><head><base href='http://scrape.io/myproject/'/></head><body>see my <a href='index.html'>project</a></body>"
>>> iterlinks(p).next()
Link(url='http://scrape.io/myproject/index.html', text=u'project', fragment='', nofollow=False)
Frameset and iframe urls are extracted
>>> p = HtmlPage(body=u"<html><frameset><frame src=frame1.html><frame src=frame2.html></frameset><iframe src='iframe.html'/></html>")
>>> [l.url for l in iterlinks(p)]
['frame1.html', 'frame2.html', 'iframe.html']
As are meta refresh tags:
>>> p = HtmlPage(body=u"<html><head><meta http-equiv='refresh' content='5;url=http://example.com/' />")
>>> iterlinks(p).next().url
'http://example.com/'
nofollow is set to True if the link has a rel='nofollow' attribute:
>>> p = HtmlPage(body=u"<a href='somewhere.html' rel='nofollow'>somewhere</a>")
>>> list(iterlinks(p))
[Link(url='somewhere.html', text=u'somewhere', fragment='', nofollow=True)]
It does not require well formed HTML and behaves similar to many browsers
>>> p = HtmlPage(body=u"<a href='foo'>foo <a href=bar>bar</a><a href='baz'/>baz")
>>> list(iterlinks(p))
[Link(url='foo', text=u'foo ', fragment='', nofollow=False), Link(url='bar', text=u'bar', fragment='', nofollow=False), Link(url='baz', text=u'baz', fragment='', nofollow=False)]
Leading and trailing whitespace should be removed, including in base href
>>> p = HtmlPage(body=u"<head><base href=' foo/ '/></head><a href='bar '/>baz")
>>> list(iterlinks(p))
[Link(url='foo/bar', text=u'baz', fragment='', nofollow=False)]
"""
base_href = remove_entities(htmlpage.url, encoding=htmlpage.encoding)
def mklink(url, anchortext=None, nofollow=False):
url = url.strip()
fullurl = urljoin_rfc(base_href, remove_entities(url, encoding=htmlpage.encoding), htmlpage.encoding)
return Link(fullurl, text=anchortext, nofollow=nofollow)
# iter to quickly scan only tags
tag_iter = (t for t in htmlpage.parsed_body if isinstance(t, HtmlTag))
# parse body
astart = ahref = None
nofollow = False
for nexttag in tag_iter:
tagname = nexttag.tag
attributes = nexttag.attributes
if tagname == "a":
if astart:
yield mklink(ahref, htmlpage.body[astart : nexttag.start], nofollow)
astart = ahref = None
nofollow = False
if nexttag.tag_type != HtmlTagType.CLOSE_TAG:
href = attributes.get("href")
if href and not href.startswith("#"):
ahref = href
astart = nexttag.end
nofollow = attributes.get("rel") == u"nofollow"
elif tagname == "head":
# scan ahead until end of head section
for nexttag in tag_iter:
tagname = nexttag.tag
if (tagname == "head" and nexttag.tag_type == HtmlTagType.CLOSE_TAG) or tagname == "body":
break
if tagname == "base":
href = nexttag.attributes.get("href")
if href:
joined_base = urljoin_rfc(htmlpage.url, href.strip(), htmlpage.encoding)
base_href = remove_entities(joined_base, encoding=htmlpage.encoding)
elif tagname == "meta":
attrs = nexttag.attributes
if attrs.get("http-equiv") == "refresh":
m = _META_REFRESH_CONTENT_RE.search(attrs.get("content", ""))
if m:
target = m.group("url")
if target:
yield mklink(target)
elif tagname == "area":
href = attributes.get("href")
if href:
nofollow = attributes.get("rel") == u"nofollow"
yield mklink(href, attributes.get("alt", ""), nofollow)
elif tagname in ("frame", "iframe"):
target = attributes.get("src")
if target:
yield mklink(target)
elif "onclick" in attributes:
# FIXME: extract URLs in onclick and add doctests
pass
if astart:
yield mklink(ahref, htmlpage.body[astart:])
def parse_product(self, response):
soup = BeautifulSoup(response.body)
if not soup.find('div', attrs={'class': 'product'}):
retry_request = _retry_page(response)
if retry_request:
yield retry_request
else:
self.log(
"Error parsing page, couldn't extract product name: %s" %
response.url)
return
main_name = soup.find('div', attrs={'class': 'product'}).h1.text
main_name = remove_entities(main_name)
brand_el = soup.find(
lambda tag: tag.name == 'td' and 'brand' in tag.text.lower())
brand = brand_el.findNextSibling('td').text.strip() if brand_el else ''
cat_names = [
span.a.text
for span in soup.find('div', attrs={
'class': 'breadcrumbtrail'
}).span.findAll('span') if span.a
][2:]
image_url = soup.find('img', {'itemprop': 'image'})
image_url = image_url['src'] if image_url else None
table = soup.find('table', id='responsive-table')
options = soup.findAll('div', attrs={'class': 'option'})
if table:
for row in table.findAll('tr'):
# Skip head row
if not row.td:
continue
name = row.find('span', attrs={'class': 'name'}).text
name = remove_entities(name)
if not _main_name_in_opt_name(main_name, name):
name = main_name + ' ' + name
identifier = row.find('span', attrs={'class': 'codenumber'})
if not identifier:
self.errors.append(
"Identifier not found for products on page: %s" %
response.url)
continue
identifier = identifier.text
price = row.find(_is_price_tag).text
real_price = extract_price(price)
if real_price < 15:
shipping_cost = 3
elif real_price < 40:
shipping_cost = 4
elif real_price < 130:
shipping_cost = 7
else:
shipping_cost = None
loader = ProductLoaderWithNameStrip(Product(),
response=response)
loader.add_value('name', name)
loader.add_value('url', response.url)
loader.add_value('brand', brand)
loader.add_value('identifier', identifier)
loader.add_value('sku', identifier)
loader.add_value('price', price)
for cat_name in cat_names:
loader.add_value('category', cat_name)
loader.add_value('shipping_cost', shipping_cost)
loader.add_value('image_url', image_url)
yield loader.load_item()
elif options:
main_id = response.url.split('.')[-2].split('p-')[-1]
price = soup.find('span', attrs={'class': 'inctax'}).span.text
real_price = extract_price(price)
if real_price < 15:
shipping_cost = 3
elif real_price < 40:
shipping_cost = 4
elif real_price < 130:
shipping_cost = 7
else:
shipping_cost = None
results = {}
for opt in options:
opt_name = opt.label.span.text
results[opt_name] = []
for subopt in opt.select.findAll('option'):
subopt_name = subopt.text
subopt_value = _soup_el_get_attr(subopt, 'value')
if subopt_value == '0':
continue
results[opt_name].append({
'id':
remove_entities(subopt_name).replace('"', ''),
'name':
opt_name + ': ' + subopt_name
})
for opt_tuple in product(*results.values()):
name = _build_opt_name(main_name, opt_tuple)
identifier = _build_opt_id(main_id, opt_tuple)
loader = ProductLoaderWithNameStrip(Product(),
response=response)
loader.add_value('name', name)
loader.add_value('url', response.url)
loader.add_value('brand', brand)
loader.add_value('identifier', identifier)
loader.add_value('sku', identifier)
loader.add_value('price', price)
for cat_name in cat_names:
loader.add_value('category', cat_name)
loader.add_value('shipping_cost', shipping_cost)
loader.add_value('image_url', image_url)
yield loader.load_item()
def __call__(self, values):
return [remove_entities(v) for v in arg_to_iter(values)]