netdata/python.d/python_modules/urllib3/fields.py at master · beride/netdata · GitHub

History

178 lines (146 loc) · 5.8 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

from __future__ import absolute_import

import email.utils

import mimetypes

from .packages import six

def guess_content_type(filename, default='application/octet-stream'):

"""

Guess the "Content-Type" of a file.

:param filename:

The filename to guess the "Content-Type" of using :mod:`mimetypes`.

:param default:

If no "Content-Type" can be guessed, default to `default`.

"""

if filename:

return mimetypes.guess_type(filename)[0] or default

return default

def format_header_param(name, value):

"""

Helper function to format and quote a single header parameter.

Particularly useful for header parameters which might contain

non-ASCII values, like file names. This follows RFC 2231, as

suggested by RFC 2388 Section 4.4.

:param name:

The name of the parameter, a string expected to be ASCII only.

:param value:

The value of the parameter, provided as a unicode string.

"""

if not any(ch in value for ch in '"\\\r\n'):

result = '%s="%s"' % (name, value)

try:

result.encode('ascii')

except (UnicodeEncodeError, UnicodeDecodeError):

pass

else:

return result

if not six.PY3 and isinstance(value, six.text_type): # Python 2:

value = value.encode('utf-8')

value = email.utils.encode_rfc2231(value, 'utf-8')

value = '%s*=%s' % (name, value)

return value

class RequestField(object):

"""

A data container for request body parameters.

:param name:

The name of this request field.

:param data:

The data/value body.

:param filename:

An optional filename of the request field.

:param headers:

An optional dict-like object of headers to initially use for the field.

"""

def __init__(self, name, data, filename=None, headers=None):

self._name = name

self._filename = filename

self.data = data

self.headers = {}

if headers:

self.headers = dict(headers)

@classmethod

def from_tuples(cls, fieldname, value):

"""

A :class:`~urllib3.fields.RequestField` factory from old-style tuple parameters.

Supports constructing :class:`~urllib3.fields.RequestField` from

parameter of key/value strings AND key/filetuple. A filetuple is a

(filename, data, MIME type) tuple where the MIME type is optional.

For example::

'foo': 'bar',

'fakefile': ('foofile.txt', 'contents of foofile'),

'realfile': ('barfile.txt', open('realfile').read()),

'typedfile': ('bazfile.bin', open('bazfile').read(), 'image/jpeg'),

'nonamefile': 'contents of nonamefile field',

Field names and filenames must be unicode.

"""

if isinstance(value, tuple):

if len(value) == 3:

filename, data, content_type = value

else:

filename, data = value

content_type = guess_content_type(filename)

else:

filename = None

content_type = None

data = value

request_param = cls(fieldname, data, filename=filename)

request_param.make_multipart(content_type=content_type)

return request_param

def _render_part(self, name, value):

"""

Overridable helper function to format a single header parameter.

:param name:

The name of the parameter, a string expected to be ASCII only.

:param value:

The value of the parameter, provided as a unicode string.

"""

return format_header_param(name, value)

def _render_parts(self, header_parts):

"""

Helper function to format and quote a single header.

Useful for single headers that are composed of multiple items. E.g.,

'Content-Disposition' fields.

:param header_parts:

A sequence of (k, v) typles or a :class:`dict` of (k, v) to format

as `k1="v1"; k2="v2"; ...`.

"""

parts = []

iterable = header_parts

if isinstance(header_parts, dict):

iterable = header_parts.items()

for name, value in iterable:

if value is not None:

parts.append(self._render_part(name, value))

return '; '.join(parts)

def render_headers(self):

"""

Renders the headers for this request field.

"""

lines = []

sort_keys = ['Content-Disposition', 'Content-Type', 'Content-Location']

for sort_key in sort_keys:

if self.headers.get(sort_key, False):

lines.append('%s: %s' % (sort_key, self.headers[sort_key]))

for header_name, header_value in self.headers.items():

if header_name not in sort_keys:

if header_value:

lines.append('%s: %s' % (header_name, header_value))

lines.append('\r\n')

return '\r\n'.join(lines)

def make_multipart(self, content_disposition=None, content_type=None,

content_location=None):

"""

Makes this request field into a multipart request field.

This method overrides "Content-Disposition", "Content-Type" and

"Content-Location" headers to the request parameter.

:param content_type:

The 'Content-Type' of the request body.

:param content_location:

The 'Content-Location' of the request body.

"""

self.headers['Content-Disposition'] = content_disposition or 'form-data'

self.headers['Content-Disposition'] += '; '.join([

'', self._render_parts(

(('name', self._name), ('filename', self._filename))

)

])

self.headers['Content-Type'] = content_type

self.headers['Content-Location'] = content_location

netdata/python.d/python_modules/urllib3/fields.py at master · beride/netdata · GitHub

Expand file tree

Breadcrumbs

fields.py

Latest commit

History

Breadcrumbs

fields.py

File metadata and controls