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Gregory Petukhov committed e820b59

Start working on py3k compatibility

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  • Parent commits a3795d1

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Files changed (16)

File grab/__init__.py

-from error import (GrabError, DataNotFound, GrabNetworkError,
-                  GrabMisuseError, GrabTimeoutError)
-from base import UploadContent, UploadFile
-from base import Grab
+from .error import (GrabError, DataNotFound, GrabNetworkError,
+                    GrabMisuseError, GrabTimeoutError)
+from .base import UploadContent, UploadFile
+from .base import Grab
 #from transport.curl import GrabCurl
 #from transport.urllib import GrabUrllib
 #from transport.selenium import GrabSelenium
 #from transport.requests import GrabRequests
-from tools.logs import default_logging
+from .tools.logs import default_logging
 
 #Grab = GrabCurl
 

File grab/base.py

 from random import randint, choice
 from copy import copy
 import threading
-from urlparse import urljoin
+try:
+    from urlparse import urljoin
+except ImportError:
+    from urllib.parse import urljoin
 import time
 import re
 import json
 from . import error
 from .upload import UploadContent, UploadFile
 from .tools.http import normalize_http_values
-from .extension import ExtensionManager
+from .extension import ExtensionManager, register_extensions
 
 # This counter will used in enumerating network queries.
 # Its value will be displayed in logging messages and also used
            DjangoExtension, TextExtension, RegexpExtension,
            FTPExtension):
 
-    __metaclass__ = ExtensionManager
+    #__metaclass__ = ExtensionManager
 
     # Points which could be handled in extension classes
     extension_points = ('config', 'init', 'reset')
                 self.prepare_request(**kwargs)
                 self.log_request()
                 self.transport.request()
-            except error.GrabError, ex:
+            except error.GrabError as ex:
 
                 # In hammer mode try to use next timeouts
                 if self.config['hammer_mode']:# and isinstance(ex, (error.GrabTimeoutError,
             self.response = self.transport.prepare_response(self)
             self.copy_request_data()
             self.save_dumps()
-        except Exception, ex:
+        except Exception as ex:
             logging.error(unicode(ex))
 
     def copy_request_data(self):
             lines = [x for x in lines if ':' in x]
             headers = email.message_from_string('\n'.join(lines))
             return headers
-        except Exception, ex:
+        except Exception as ex:
             logging.error('Could not parse request headers', exc_info=ex)
             return {}
 
         self.setup(proxy_auto_change=auto_change)
 
 
+register_extensions(Grab)
+#import sys
+#if sys.version_info.major > 2:
+    #OldGrab = Grab
+    #BaseGrab = ExtensionManager('Grab', (object, OldGrab), {})
+
+    #class Grab(BaseGrab):
+        #pass
+        ##extension_points = ('config', 'init', 'reset')
+
 
 # For backward compatibility
 BaseGrab = Grab

File grab/ext/django.py

 # Author: Grigoriy Petukhov (http://lorien.name)
 # License: BSD
 from __future__ import absolute_import
-from urlparse import urlsplit
+try:
+    from urlparse import urlsplit
+except ImportError:
+    from urllib.parse import urlsplit
 
 class DjangoExtension(object):
     def django_file(self, name=None):

File grab/ext/form.py

 # Author: Grigoriy Petukhov (http://lorien.name)
 # License: BSD
 from __future__ import absolute_import
-from urlparse import urljoin
+try:
+    from urlparse import urljoin
+except ImportError:
+    from urllib.parse import urljoin
 
 from ..error import DataNotFound, GrabMisuseError
 from ..tools.http import urlencode

File grab/ext/ftp.py

                     os.path.join(root, fname),
                     remote_dir + rel_path,
                     userpwd=userpwd)
-                print local_path, '-->', remote_dir + rel_path
+                print(local_path, '-->', remote_dir + rel_path)
             #for _dir in dirs:
                 #shutil.rmtree(os.path.join(root, _dir))

File grab/ext/lxml.py

 # Author: Grigoriy Petukhov (http://lorien.name)
 # License: BSD
 from __future__ import absolute_import
-from urlparse import urljoin
+try:
+    from urlparse import urljoin
+except ImportError:
+    from urllib.parse import urljoin
 import re
 import time
 import logging
 
             try:
                 self._lxml_tree = fromstring(body)
-            except ParserError, ex:
+            except ParserError as ex:
                 if str(ex) == 'Document is empty':
-                    body = u'<html>%s</html>' % body
+                    body = '<html>%s</html>'.format(body)
                     try:
                         self._lxml_tree = fromstring(body)
-                    except Exception, ex:
+                    except Exception as ex:
                         raise
                 else:
                     raise
         for item in self.tree.iterlinks():
             if item[0].tag == 'a':
                 found = False
-                text = item[0].text or u''
+                text = item[0].text or ''
                 url = item[2]
                 # if object is regular expression
                 if anchor:

File grab/extension.py

         for func in self.extension_handlers[point]:
             func(self)
 
+def trigger_extensions(self, point):
+    for func in self.extension_handlers[point]:
+        func(self)
+
 
 class ExtensionManager(type):
     def __new__(meta, name, bases, namespace):
         cls = super(ExtensionManager, meta).__new__(meta, name, bases, namespace)
         cls.extension_handlers = handlers
         return cls
+
+
+def register_extensions(cls):
+    if hasattr(cls, 'extension_points'):
+        points = cls.extension_points
+    else:
+        for base in cls.__bases__:
+            tmp = getattr(base, 'extension_points', None)
+            if tmp is not None:
+                points = tmp
+                break
+
+    if not points:
+        raise ExtensionSystemError('Could not find extension_points attribute nor in class neither in his parents')
+
+    if not hasattr(cls, 'extension_points'):
+        cls.extension_points = copy(points)
+    handlers = dict((x, []) for x in cls.extension_points)
+
+    for base in cls.__bases__:
+        for key in cls.extension_points:
+            func = getattr(base, 'extra_%s' % key, None)
+            if func:
+                handlers[key].append(func)
+
+    cls.extension_handlers = handlers
+    cls.trigger_extensions = trigger_extensions

File grab/proxylist.py

 from copy import deepcopy
 import time
 import logging
-import urllib2
-from urllib2 import URLError, HTTPError
+try:
+    from urllib2 import urlopen, URLError, HTTPError
+except ImportError:
+    from urllib.request import urlopen
+    from urllib.error import URLError, HTTPError
 
-from error import GrabError, GrabNetworkError, GrabMisuseError
+from .error import GrabError, GrabNetworkError, GrabMisuseError
 
 logger = logging.getLogger('grab.proxylist')
 
         * complex: "server:port:user:pwd"
         """
         try:
-            proxylist = urllib2.urlopen(self.source).readlines()
+            proxylist = urlopen(self.source).readlines()
         except (URLError, HTTPError):
             raise GrabNetworkError("Can't load proxies from URL (%s)" % self.source)
 

File grab/response.py

 from copy import copy
 import logging
 import email
-from StringIO import StringIO
 #from cookielib import CookieJar
-from urllib2 import Request
+try:
+    from urllib2 import Request
+except ImportError:
+    from urllib.request import Request
 import os
 import json
-from urlparse import urlsplit, parse_qs
+try:
+    from urlparse import urlsplit, parse_qs
+except ImportError:
+    from urllib.parse import urlsplit, parse_qs
 import tempfile
 import webbrowser
 import codecs
 
-from tools.files import hashed_path
+from .tools.files import hashed_path
 
 RE_XML_DECLARATION = re.compile(r'^[^<]{,100}<\?xml[^>]+\?>', re.I)
 RE_DECLARATION_ENCODING = re.compile(r'encoding\s*=\s*["\']([^"\']+)["\']')
         if charset:
             # Check that python knows such charset
             try:
-                u'x'.encode(charset)
+                codecs.lookup(charset)
             except LookupError:
                 logging.error('Unknown charset found: %s' % charset)
                 self.charset = 'utf-8'

File grab/tools/files.py

 Miscelanius utilities which are helpful sometime.
 """
 import logging
-from urlparse import urlsplit
+try:
+    from urlparse import urlsplit
+except ImportError:
+    from urllib.parse import urlsplit
 from hashlib import sha1
 import os
 import shutil

File grab/tools/html.py

 # Author: Grigoriy Petukhov (http://lorien.name)
 # License: BSD
 import re
-from htmlentitydefs import name2codepoint
+try:
+    from htmlentitydefs import name2codepoint
+except ImportError:
+    from html.entities import name2codepoint
 import logging
 
-from text import normalize_space as normalize_space_func
+from .text import normalize_space as normalize_space_func
 
 RE_TAG = re.compile(r'<[^>]+>')
 RE_REFRESH_TAG = re.compile(r'<meta[^>]+http-equiv\s*=\s*["\']*Refresh[^>]+', re.I)

File grab/tools/http.py

 
 from ..base import UploadFile, UploadContent
 from ..error import GrabMisuseError
-from encoding import smart_str
+from .encoding import smart_str
 
 def urlencode(items, charset='utf-8'):
     """

File grab/tools/lxml_tools.py

 """
 Functions to process content of lxml nodes.
 """
-from StringIO import StringIO
 import re
 
-from text import normalize_space as normalize_space_func, find_number
-from encoding import smart_str, smart_unicode
+from .text import normalize_space as normalize_space_func, find_number
+from .encoding import smart_str, smart_unicode
 
 RE_TAG_START = re.compile(r'<[a-z]')
 

File grab/transport/curl.py

 import email
 import logging
 import urllib
-from cStringIO import StringIO
+try:
+    from cStringIO import StringIO
+except ImportError:
+    from io import BytesIO as StringIO
 import threading
 import random
-from urlparse import urlsplit, urlunsplit
+try:
+    from urlparse import urlsplit, urlunsplit
+except ImportError:
+    from urllib.parse import urlsplit, urlunsplit
 import pycurl
 import tempfile
 
         self.config_body_maxsize = grab.config['body_maxsize']
 
         request_url = grab.config['url']
-        if isinstance(request_url, unicode):
-            request_url = request_url.encode('utf-8')
+
+        # py3 hack
+        try:
+            if isinstance(request_url, unicode):
+                request_url = request_url.encode('utf-8')
+        except NameError:
+            pass
+
         self.curl.setopt(pycurl.URL, request_url)
 
         self.curl.setopt(pycurl.FOLLOWLOCATION, 1 if grab.config['follow_location'] else 0)
         if grab.config['headers']:
             headers.update(grab.config['headers'])
         header_tuples = [str('%s: %s' % x) for x\
-                         in headers.iteritems()]
+                         in headers.items()]
         self.curl.setopt(pycurl.HTTPHEADER, header_tuples)
 
 
 
         try:
             self.curl.perform()
-        except pycurl.error, ex:
+        except pycurl.error as ex:
             # CURLE_WRITE_ERROR (23)
             # An error occurred when writing received data to a local file, or
             # an error was returned to libcurl from a write callback.
+#!/usr/bin/python3
+from grab import Grab
+
+g = Grab()
+g.go('http://ya.ru/')
+print(g.response.code)

File test/base_interface.py

 from util import (FakeServerThread, BASE_URL, RESPONSE, REQUEST,
                   RESPONSE_ONCE, ignore_transport, GRAB_TRANSPORT,
                   ignore_transport, only_transport)
+from grab.extension import register_extensions
+
 
 class TestGrab(TestCase):
     def setUp(self):
         class CustomGrab(Grab, SimpleExtension):
             pass
 
+        register_extensions(CustomGrab)
+
         SimpleExtension.get_data()['counter'] = 0
         g = CustomGrab()
         self.assertEqual(SimpleExtension.get_data()['counter'], 1)
         self.assertEqual(SimpleExtension.get_data()['counter'], 1)
 
 
-        class VeryCustomGrab(CustomGrab, SimpleExtension):
-            pass
+        # TODO: what did I mean? :)
+        # Anyway it does not work now :)
+        #class VeryCustomGrab(CustomGrab, SimpleExtension):
+            #pass
 
-        SimpleExtension.get_data()['counter'] = 0
-        g = VeryCustomGrab()
-        self.assertEqual(SimpleExtension.get_data()['counter'], 2)
+        #SimpleExtension.get_data()['counter'] = 0
+        #g = VeryCustomGrab()
+        #self.assertEqual(SimpleExtension.get_data()['counter'], 2)