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annotate venv/lib/python2.7/site-packages/requests/packages/urllib3/filepost.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 import codecs
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2
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3 from uuid import uuid4
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4 from io import BytesIO
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5
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6 from .packages import six
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7 from .packages.six import b
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8 from .fields import RequestField
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9
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10 writer = codecs.lookup('utf-8')[3]
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11
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12
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13 def choose_boundary():
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14 """
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15 Our embarassingly-simple replacement for mimetools.choose_boundary.
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16 """
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17 return uuid4().hex
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18
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19
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20 def iter_field_objects(fields):
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21 """
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22 Iterate over fields.
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23
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24 Supports list of (k, v) tuples and dicts, and lists of
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25 :class:`~urllib3.fields.RequestField`.
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26
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27 """
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28 if isinstance(fields, dict):
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29 i = six.iteritems(fields)
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30 else:
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31 i = iter(fields)
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32
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33 for field in i:
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34 if isinstance(field, RequestField):
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35 yield field
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36 else:
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37 yield RequestField.from_tuples(*field)
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38
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39
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40 def iter_fields(fields):
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41 """
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42 .. deprecated:: 1.6
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43
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44 Iterate over fields.
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45
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46 The addition of :class:`~urllib3.fields.RequestField` makes this function
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47 obsolete. Instead, use :func:`iter_field_objects`, which returns
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48 :class:`~urllib3.fields.RequestField` objects.
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49
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50 Supports list of (k, v) tuples and dicts.
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51 """
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52 if isinstance(fields, dict):
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53 return ((k, v) for k, v in six.iteritems(fields))
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54
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55 return ((k, v) for k, v in fields)
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56
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57
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58 def encode_multipart_formdata(fields, boundary=None):
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59 """
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60 Encode a dictionary of ``fields`` using the multipart/form-data MIME format.
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61
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62 :param fields:
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63 Dictionary of fields or list of (key, :class:`~urllib3.fields.RequestField`).
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64
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65 :param boundary:
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66 If not specified, then a random boundary will be generated using
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67 :func:`mimetools.choose_boundary`.
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68 """
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69 body = BytesIO()
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70 if boundary is None:
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71 boundary = choose_boundary()
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72
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73 for field in iter_field_objects(fields):
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74 body.write(b('--%s\r\n' % (boundary)))
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75
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76 writer(body).write(field.render_headers())
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77 data = field.data
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78
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79 if isinstance(data, int):
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80 data = str(data) # Backwards compatibility
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81
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82 if isinstance(data, six.text_type):
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83 writer(body).write(data)
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84 else:
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85 body.write(data)
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86
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87 body.write(b'\r\n')
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88
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89 body.write(b('--%s--\r\n' % (boundary)))
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90
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91 content_type = str('multipart/form-data; boundary=%s' % boundary)
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92
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93 return body.getvalue(), content_type