pyspider.libs.Response.encoding() - Code Metrics - Inspection of "fix RuntimeError: IOLoop is already running #374" - binux/pyspider - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 06039e...395744 )

by Roy

created 2016-01-21 20:56 UTC

pyspider.libs.Response.encoding() F

↳ Parent: pyspider.libs.Response

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Metric	Value
cc	11
dl	0
loc	37
rs	3.1764

How to fix Complexity

#!/usr/bin/env python
# -*- encoding: utf-8 -*-
# vim: set et sw=4 ts=4 sts=4 ff=unix fenc=utf8:
# Author: Binux<[email protected]>
#         http://binux.me
# Created on 2012-11-02 11:16:02

import six
import json
import chardet
import lxml.html
import lxml.etree
from pyquery import PyQuery
from requests.structures import CaseInsensitiveDict
from requests.utils import get_encoding_from_headers
try:
    from requests.utils import get_encodings_from_content
except ImportError:
    get_encodings_from_content = None
from requests import HTTPError
from pyspider.libs import utils


class Response(object):

    def __init__(self):
        self.status_code = None
        self.url = None
        self.orig_url = None
        self.headers = CaseInsensitiveDict()
        self.content = ''
        self.cookies = {}
        self.error = None
        self.save = None
        self.js_script_result = None
        self.time = 0

    def __repr__(self):
        return u'<Response [%d]>' % self.status_code

    def __bool__(self):
        """Returns true if `status_code` is 200 and no error"""
        return self.ok

    def __nonzero__(self):
        """Returns true if `status_code` is 200 and no error."""
        return self.ok

    @property
    def ok(self):
        """Return true if `status_code` is 200 and no error."""
        try:
            self.raise_for_status()
        except:
            return False
        return True

    @property
    def encoding(self):
        """
        encoding of Response.content.

        if Response.encoding is None, encoding will be guessed
        by header or content or chardet if available.
        """
        if hasattr(self, '_encoding'):
            return self._encoding

        # content is unicode
        if isinstance(self.content, six.text_type):
            return 'unicode'

        # Try charset from content-type
        encoding = get_encoding_from_headers(self.headers)
        if encoding == 'ISO-8859-1':
            encoding = None

        # Try charset from content
        if not encoding and get_encodings_from_content:
            if six.PY3:
                encoding = get_encodings_from_content(utils.pretty_unicode(self.content[:100]))
            else:
                encoding = get_encodings_from_content(self.content)
            encoding = encoding and encoding[0] or None

        # Fallback to auto-detected encoding.
        if not encoding and chardet is not None:
            encoding = chardet.detect(self.content)['encoding']

        if encoding and encoding.lower() == 'gb2312':
            encoding = 'gb18030'

        self._encoding = encoding or 'utf-8'
        return self._encoding

    @encoding.setter
    def encoding(self, value):
        """
        set encoding of content manually
        it will overwrite the guessed encoding
        """
        self._encoding = value
        self._text = None

    @property
    def text(self):
        """
        Content of the response, in unicode.

        if Response.encoding is None and chardet module is available, encoding
        will be guessed.
        """
        if hasattr(self, '_text') and self._text:
            return self._text
        if not self.content:
            return u''
        if isinstance(self.content, six.text_type):
            return self.content

        content = None
        encoding = self.encoding

        # Decode unicode from given encoding.
        try:
            content = self.content.decode(encoding, 'replace')
        except LookupError:
            # A LookupError is raised if the encoding was not found which could
            # indicate a misspelling or similar mistake.
            #
            # So we try blindly encoding.
            content = self.content.decode('utf-8', 'replace')

        self._text = content
        return content

    @property
    def json(self):
        """Returns the json-encoded content of the response, if any."""
        if hasattr(self, '_json'):
            return self._json
        try:
            self._json = json.loads(self.text or self.content)
        except ValueError:
            self._json = None
        return self._json

    @property
    def doc(self):
        """Returns a PyQuery object of the response's content"""
        if hasattr(self, '_doc'):
            return self._doc
        elements = self.etree
        doc = self._doc = PyQuery(elements)
        doc.make_links_absolute(self.url)
        return doc

    @property
    def etree(self):
        """Returns a lxml object of the response's content that can be selected by xpath"""
        if not hasattr(self, '_elements'):
            try:
                parser = lxml.html.HTMLParser(encoding=self.encoding)
                self._elements = lxml.html.fromstring(self.content, parser=parser)
            except LookupError:
                # lxml would raise LookupError when encoding not supported
                # try fromstring without encoding instead.
                # on windows, unicode is not availabe as encoding for lxml
                self._elements = lxml.html.fromstring(self.content)
        if isinstance(self._elements, lxml.etree._ElementTree):
            self._elements = self._elements.getroot()
        return self._elements

    def raise_for_status(self, allow_redirects=True):
        """Raises stored :class:`HTTPError` or :class:`URLError`, if one occurred."""

        if self.status_code == 304:
            return
        elif self.error:
            http_error = HTTPError(self.error)
        elif (self.status_code >= 300) and (self.status_code < 400) and not allow_redirects:
            http_error = HTTPError('%s Redirection' % (self.status_code))
        elif (self.status_code >= 400) and (self.status_code < 500):
            http_error = HTTPError('%s Client Error' % (self.status_code))
        elif (self.status_code >= 500) and (self.status_code < 600):
            http_error = HTTPError('%s Server Error' % (self.status_code))
        else:
            return

        http_error.response = self
        raise http_error

    def isok(self):
        try:
            self.raise_for_status()
            return True
        except:
            return False


def rebuild_response(r):
    response = Response()
    response.status_code = r.get('status_code', 599)
    response.url = r.get('url', '')
    response.headers = CaseInsensitiveDict(r.get('headers', {}))
    response.content = r.get('content', '')
    response.cookies = r.get('cookies', {})
    response.error = r.get('error')
    response.time = r.get('time', 0)
    response.orig_url = r.get('orig_url', response.url)
    response.js_script_result = r.get('js_script_result')
    response.save = r.get('save')
    return response


1			#!/usr/bin/env python
2			# -- encoding: utf-8 --
3			# vim: set et sw=4 ts=4 sts=4 ff=unix fenc=utf8:
4			# Author: Binux<[email protected]>
5			# http://binux.me
6			# Created on 2012-11-02 11:16:02
7
8			import six
9			import json
10			import chardet
11			import lxml.html
12			import lxml.etree
13			from pyquery import PyQuery
14			from requests.structures import CaseInsensitiveDict
15			from requests.utils import get_encoding_from_headers
16			try:
17			from requests.utils import get_encodings_from_content
18			except ImportError:
19			get_encodings_from_content = None
20			from requests import HTTPError
21			from pyspider.libs import utils
22
23
24			class Response(object):
25
26			def __init__(self):
27			self.status_code = None
28			self.url = None
29			self.orig_url = None
30			self.headers = CaseInsensitiveDict()
31			self.content = ''
32			self.cookies = {}
33			self.error = None
34			self.save = None
35			self.js_script_result = None
36			self.time = 0
37
38			def __repr__(self):
39			return u'<Response [%d]>' % self.status_code
40
41			def __bool__(self):
42			"""Returns true if `status_code` is 200 and no error"""
43			return self.ok
44
45			def __nonzero__(self):
46			"""Returns true if `status_code` is 200 and no error."""
47			return self.ok
48
49			@property
50			def ok(self):
51			"""Return true if `status_code` is 200 and no error."""
52			try:
53			self.raise_for_status()
54			except:
55			return False
56			return True
57
58			@property
59			def encoding(self):
60			"""
61			encoding of Response.content.
62
63			if Response.encoding is None, encoding will be guessed
64			by header or content or chardet if available.
65			"""
66			if hasattr(self, '_encoding'):
67			return self._encoding
68
69			# content is unicode
70			if isinstance(self.content, six.text_type):
71			return 'unicode'
72
73			# Try charset from content-type
74			encoding = get_encoding_from_headers(self.headers)
75			if encoding == 'ISO-8859-1':
76			encoding = None
77
78			# Try charset from content
79			if not encoding and get_encodings_from_content:
80			if six.PY3:
81			encoding = get_encodings_from_content(utils.pretty_unicode(self.content[:100]))
82			else:
83			encoding = get_encodings_from_content(self.content)
84			encoding = encoding and encoding[0] or None
85
86			# Fallback to auto-detected encoding.
87			if not encoding and chardet is not None:
88			encoding = chardet.detect(self.content)['encoding']
89
90			if encoding and encoding.lower() == 'gb2312':
91			encoding = 'gb18030'
92
93			self._encoding = encoding or 'utf-8'
94			return self._encoding
95
96			@encoding.setter
97			def encoding(self, value):
98			"""
99			set encoding of content manually
100			it will overwrite the guessed encoding
101			"""
102			self._encoding = value
103			self._text = None
104
105			@property
106			def text(self):
107			"""
108			Content of the response, in unicode.
109
110			if Response.encoding is None and chardet module is available, encoding
111			will be guessed.
112			"""
113			if hasattr(self, '_text') and self._text:
114			return self._text
115			if not self.content:
116			return u''
117			if isinstance(self.content, six.text_type):
118			return self.content
119
120			content = None
121			encoding = self.encoding
122
123			# Decode unicode from given encoding.
124			try:
125			content = self.content.decode(encoding, 'replace')
126			except LookupError:
127			# A LookupError is raised if the encoding was not found which could
128			# indicate a misspelling or similar mistake.
129			#
130			# So we try blindly encoding.
131			content = self.content.decode('utf-8', 'replace')
132
133			self._text = content
134			return content
135
136			@property
137			def json(self):
138			"""Returns the json-encoded content of the response, if any."""
139			if hasattr(self, '_json'):
140			return self._json
141			try:
142			self._json = json.loads(self.text or self.content)
143			except ValueError:
144			self._json = None
145			return self._json
146
147			@property
148			def doc(self):
149			"""Returns a PyQuery object of the response's content"""
150			if hasattr(self, '_doc'):
151			return self._doc
152			elements = self.etree
153			doc = self._doc = PyQuery(elements)
154			doc.make_links_absolute(self.url)
155			return doc
156
157			@property
158			def etree(self):
159			"""Returns a lxml object of the response's content that can be selected by xpath"""
160			if not hasattr(self, '_elements'):
161			try:
162			parser = lxml.html.HTMLParser(encoding=self.encoding)
163			self._elements = lxml.html.fromstring(self.content, parser=parser)
164			except LookupError:
165			# lxml would raise LookupError when encoding not supported
166			# try fromstring without encoding instead.
167			# on windows, unicode is not availabe as encoding for lxml
168			self._elements = lxml.html.fromstring(self.content)
169			if isinstance(self._elements, lxml.etree._ElementTree):
170			self._elements = self._elements.getroot()
171			return self._elements
172
173			def raise_for_status(self, allow_redirects=True):
174			"""Raises stored :class:`HTTPError` or :class:`URLError`, if one occurred."""
175
176			if self.status_code == 304:
177			return
178			elif self.error:
179			http_error = HTTPError(self.error)
180			elif (self.status_code >= 300) and (self.status_code < 400) and not allow_redirects:
181			http_error = HTTPError('%s Redirection' % (self.status_code))
182			elif (self.status_code >= 400) and (self.status_code < 500):
183			http_error = HTTPError('%s Client Error' % (self.status_code))
184			elif (self.status_code >= 500) and (self.status_code < 600):
185			http_error = HTTPError('%s Server Error' % (self.status_code))
186			else:
187			return
188
189			http_error.response = self
190			raise http_error
191
192			def isok(self):
193			try:
194			self.raise_for_status()
195			return True
196			except:
197			return False
198
199
200			def rebuild_response(r):
201			response = Response()
202			response.status_code = r.get('status_code', 599)
203			response.url = r.get('url', '')
204			response.headers = CaseInsensitiveDict(r.get('headers', {}))
205			response.content = r.get('content', '')
206			response.cookies = r.get('cookies', {})
207			response.error = r.get('error')
208			response.time = r.get('time', 0)
209			response.orig_url = r.get('orig_url', response.url)
210			response.js_script_result = r.get('js_script_result')
211			response.save = r.get('save')
212			return response
213

binux / pyspider

Push — master ( 06039e...395744 )

pyspider.libs.Response.encoding() F

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