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Refactoring

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This commit is contained in:
Jakub Roztocil
2019-08-31 15:17:10 +02:00
parent 466df77b6b
commit aba3b1ec01
25 changed files with 1041 additions and 960 deletions
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httpie/cli/__init__.py Normal file
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387
httpie/cli/argparser.py Normal file
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import argparse
import errno
import os
import re
import sys
from argparse import RawDescriptionHelpFormatter
from textwrap import dedent
from urllib.parse import urlsplit
from httpie.cli.argtypes import AuthCredentials, KeyValueArgType, parse_auth
from httpie.cli.constants import (
HTTP_GET, HTTP_POST, OUTPUT_OPTIONS, OUTPUT_OPTIONS_DEFAULT,
OUTPUT_OPTIONS_DEFAULT_STDOUT_REDIRECTED, OUT_RESP_BODY, PRETTY_MAP,
PRETTY_STDOUT_TTY_ONLY, SEPARATOR_CREDENTIALS, SEPARATOR_GROUP_ALL_ITEMS,
SEPARATOR_GROUP_DATA_ITEMS, URL_SCHEME_RE,
)
from httpie.cli.exceptions import ParseError
from httpie.cli.requestitems import RequestItems
from httpie.context import Environment
from httpie.plugins import plugin_manager
from httpie.utils import ExplicitNullAuth, get_content_type
class HTTPieHelpFormatter(RawDescriptionHelpFormatter):
"""A nicer help formatter.
Help for arguments can be indented and contain new lines.
It will be de-dented and arguments in the help
will be separated by a blank line for better readability.
"""
def __init__(self, max_help_position=6, *args, **kwargs):
# A smaller indent for args help.
kwargs['max_help_position'] = max_help_position
super().__init__(*args, **kwargs)
def _split_lines(self, text, width):
text = dedent(text).strip() + '\n\n'
return text.splitlines()
class HTTPieArgumentParser(argparse.ArgumentParser):
"""Adds additional logic to `argparse.ArgumentParser`.
Handles all input (CLI args, file args, stdin), applies defaults,
and performs extra validation.
"""
def __init__(self, *args, formatter_class=HTTPieHelpFormatter, **kwargs):
kwargs['add_help'] = False
super().__init__(*args, formatter_class=formatter_class, **kwargs)
self.env = None
self.args = None
self.has_stdin_data = False
# noinspection PyMethodOverriding
def parse_args(
self,
env: Environment,
program_name='http',
args=None,
namespace=None
) -> argparse.Namespace:
self.env = env
self.args, no_options = super().parse_known_args(args, namespace)
if self.args.debug:
self.args.traceback = True
self.has_stdin_data = (
self.env.stdin
and not self.args.ignore_stdin
and not self.env.stdin_isatty
)
# Arguments processing and environment setup.
self._apply_no_options(no_options)
self._validate_download_options()
self._setup_standard_streams()
self._process_output_options()
self._process_pretty_options()
self._guess_method()
self._parse_items()
if self.has_stdin_data:
self._body_from_file(self.env.stdin)
if not URL_SCHEME_RE.match(self.args.url):
if os.path.basename(program_name) == 'https':
scheme = 'https://'
else:
scheme = self.args.default_scheme + "://"
# See if we're using curl style shorthand for localhost (:3000/foo)
shorthand = re.match(r'^:(?!:)(\d*)(/?.*)$', self.args.url)
if shorthand:
port = shorthand.group(1)
rest = shorthand.group(2)
self.args.url = scheme + 'localhost'
if port:
self.args.url += ':' + port
self.args.url += rest
else:
self.args.url = scheme + self.args.url
self._process_auth()
return self.args
# noinspection PyShadowingBuiltins
def _print_message(self, message, file=None):
# Sneak in our stderr/stdout.
file = {
sys.stdout: self.env.stdout,
sys.stderr: self.env.stderr,
None: self.env.stderr
}.get(file, file)
if not hasattr(file, 'buffer') and isinstance(message, str):
message = message.encode(self.env.stdout_encoding)
super()._print_message(message, file)
def _setup_standard_streams(self):
"""
Modify `env.stdout` and `env.stdout_isatty` based on args, if needed.
"""
self.args.output_file_specified = bool(self.args.output_file)
if self.args.download:
# FIXME: Come up with a cleaner solution.
if not self.args.output_file and not self.env.stdout_isatty:
# Use stdout as the download output file.
self.args.output_file = self.env.stdout
# With `--download`, we write everything that would normally go to
# `stdout` to `stderr` instead. Let's replace the stream so that
# we don't have to use many `if`s throughout the codebase.
# The response body will be treated separately.
self.env.stdout = self.env.stderr
self.env.stdout_isatty = self.env.stderr_isatty
elif self.args.output_file:
# When not `--download`ing, then `--output` simply replaces
# `stdout`. The file is opened for appending, which isn't what
# we want in this case.
self.args.output_file.seek(0)
try:
self.args.output_file.truncate()
except IOError as e:
if e.errno == errno.EINVAL:
# E.g. /dev/null on Linux.
pass
else:
raise
self.env.stdout = self.args.output_file
self.env.stdout_isatty = False
def _process_auth(self):
# TODO: refactor
self.args.auth_plugin = None
default_auth_plugin = plugin_manager.get_auth_plugins()[0]
auth_type_set = self.args.auth_type is not None
url = urlsplit(self.args.url)
if self.args.auth is None and not auth_type_set:
if url.username is not None:
# Handle http://username:password@hostname/
username = url.username
password = url.password or ''
self.args.auth = AuthCredentials(
key=username,
value=password,
sep=SEPARATOR_CREDENTIALS,
orig=SEPARATOR_CREDENTIALS.join([username, password])
)
if self.args.auth is not None or auth_type_set:
if not self.args.auth_type:
self.args.auth_type = default_auth_plugin.auth_type
plugin = plugin_manager.get_auth_plugin(self.args.auth_type)()
if plugin.auth_require and self.args.auth is None:
self.error('--auth required')
plugin.raw_auth = self.args.auth
self.args.auth_plugin = plugin
already_parsed = isinstance(self.args.auth, AuthCredentials)
if self.args.auth is None or not plugin.auth_parse:
self.args.auth = plugin.get_auth()
else:
if already_parsed:
# from the URL
credentials = self.args.auth
else:
credentials = parse_auth(self.args.auth)
if (not credentials.has_password()
and plugin.prompt_password):
if self.args.ignore_stdin:
# Non-tty stdin read by now
self.error(
'Unable to prompt for passwords because'
' --ignore-stdin is set.'
)
credentials.prompt_password(url.netloc)
self.args.auth = plugin.get_auth(
username=credentials.key,
password=credentials.value,
)
if not self.args.auth and self.args.ignore_netrc:
# Set a no-op auth to force requests to ignore .netrc
# <https://github.com/psf/requests/issues/2773#issuecomment-174312831>
self.args.auth = ExplicitNullAuth()
def _apply_no_options(self, no_options):
"""For every `--no-OPTION` in `no_options`, set `args.OPTION` to
its default value. This allows for un-setting of options, e.g.,
specified in config.
"""
invalid = []
for option in no_options:
if not option.startswith('--no-'):
invalid.append(option)
continue
# --no-option => --option
inverted = '--' + option[5:]
for action in self._actions:
if inverted in action.option_strings:
setattr(self.args, action.dest, action.default)
break
else:
invalid.append(option)
if invalid:
msg = 'unrecognized arguments: %s'
self.error(msg % ' '.join(invalid))
def _body_from_file(self, fd):
"""There can only be one source of request data.
Bytes are always read.
"""
if self.args.data:
self.error('Request body (from stdin or a file) and request '
'data (key=value) cannot be mixed. Pass '
'--ignore-stdin to let key/value take priority.')
self.args.data = getattr(fd, 'buffer', fd).read()
def _guess_method(self):
"""Set `args.method` if not specified to either POST or GET
based on whether the request has data or not.
"""
if self.args.method is None:
# Invoked as `http URL'.
assert not self.args.request_items
if self.has_stdin_data:
self.args.method = HTTP_POST
else:
self.args.method = HTTP_GET
# FIXME: False positive, e.g., "localhost" matches but is a valid URL.
elif not re.match('^[a-zA-Z]+$', self.args.method):
# Invoked as `http URL item+'. The URL is now in `args.method`
# and the first ITEM is now incorrectly in `args.url`.
try:
# Parse the URL as an ITEM and store it as the first ITEM arg.
self.args.request_items.insert(0, KeyValueArgType(
*SEPARATOR_GROUP_ALL_ITEMS).__call__(self.args.url))
except argparse.ArgumentTypeError as e:
if self.args.traceback:
raise
self.error(e.args[0])
else:
# Set the URL correctly
self.args.url = self.args.method
# Infer the method
has_data = (
self.has_stdin_data
or any(
item.sep in SEPARATOR_GROUP_DATA_ITEMS
for item in self.args.request_items)
)
self.args.method = HTTP_POST if has_data else HTTP_GET
def _parse_items(self):
"""
Parse `args.request_items` into `args.headers`, `args.data`,
`args.params`, and `args.files`.
"""
try:
request_items = RequestItems.from_args(
request_item_args=self.args.request_items,
as_form=self.args.form,
)
except ParseError as e:
if self.args.traceback:
raise
self.error(e.args[0])
else:
self.args.headers = request_items.headers
self.args.data = request_items.data
self.args.files = request_items.files
self.args.params = request_items.params
if self.args.files and not self.args.form:
# `http url @/path/to/file`
file_fields = list(self.args.files.keys())
if file_fields != ['']:
self.error(
'Invalid file fields (perhaps you meant --form?): %s'
% ','.join(file_fields))
fn, fd, ct = self.args.files['']
self.args.files = {}
self._body_from_file(fd)
if 'Content-Type' not in self.args.headers:
content_type = get_content_type(fn)
if content_type:
self.args.headers['Content-Type'] = content_type
def _process_output_options(self):
"""Apply defaults to output options, or validate the provided ones.
The default output options are stdout-type-sensitive.
"""
def check_options(value, option):
unknown = set(value) - OUTPUT_OPTIONS
if unknown:
self.error('Unknown output options: {0}={1}'.format(
option,
','.join(unknown)
))
if self.args.verbose:
self.args.all = True
if self.args.output_options is None:
if self.args.verbose:
self.args.output_options = ''.join(OUTPUT_OPTIONS)
else:
self.args.output_options = (
OUTPUT_OPTIONS_DEFAULT
if self.env.stdout_isatty
else OUTPUT_OPTIONS_DEFAULT_STDOUT_REDIRECTED
)
if self.args.output_options_history is None:
self.args.output_options_history = self.args.output_options
check_options(self.args.output_options, '--print')
check_options(self.args.output_options_history, '--history-print')
if self.args.download and OUT_RESP_BODY in self.args.output_options:
# Response body is always downloaded with --download and it goes
# through a different routine, so we remove it.
self.args.output_options = str(
set(self.args.output_options) - set(OUT_RESP_BODY))
def _process_pretty_options(self):
if self.args.prettify == PRETTY_STDOUT_TTY_ONLY:
self.args.prettify = PRETTY_MAP[
'all' if self.env.stdout_isatty else 'none']
elif (self.args.prettify and self.env.is_windows
and self.args.output_file):
self.error('Only terminal output can be colorized on Windows.')
else:
# noinspection PyTypeChecker
self.args.prettify = PRETTY_MAP[self.args.prettify]
def _validate_download_options(self):
if not self.args.download:
if self.args.download_resume:
self.error('--continue only works with --download')
if self.args.download_resume and not (
self.args.download and self.args.output_file):
self.error('--continue requires --output to be specified')

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httpie/cli/argtypes.py Normal file
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import argparse
import getpass
import os
import sys
from httpie.cli.constants import SEPARATOR_CREDENTIALS
from httpie.sessions import VALID_SESSION_NAME_PATTERN
class KeyValueArg:
"""Base key-value pair parsed from CLI."""
def __init__(self, key, value, sep, orig):
self.key = key
self.value = value
self.sep = sep
self.orig = orig
def __eq__(self, other):
return self.__dict__ == other.__dict__
def __repr__(self):
return repr(self.__dict__)
class SessionNameValidator:
def __init__(self, error_message):
self.error_message = error_message
def __call__(self, value):
# Session name can be a path or just a name.
if (os.path.sep not in value
and not VALID_SESSION_NAME_PATTERN.search(value)):
raise argparse.ArgumentError(None, self.error_message)
return value
class Escaped(str):
"""Represents an escaped character."""
class KeyValueArgType:
"""A key-value pair argument type used with `argparse`.
Parses a key-value arg and constructs a `KeyValuArge` instance.
Used for headers, form data, and other key-value pair types.
"""
key_value_class = KeyValueArg
def __init__(self, *separators):
self.separators = separators
self.special_characters = set('\\')
for separator in separators:
self.special_characters.update(separator)
def __call__(self, string) -> KeyValueArg:
"""Parse `string` and return `self.key_value_class()` instance.
The best of `self.separators` is determined (first found, longest).
Back slash escaped characters aren't considered as separators
(or parts thereof). Literal back slash characters have to be escaped
as well (r'\\').
"""
def tokenize(string):
r"""Tokenize `string`. There are only two token types - strings
and escaped characters:
tokenize(r'foo\=bar\\baz')
=> ['foo', Escaped('='), 'bar', Escaped('\\'), 'baz']
"""
tokens = ['']
characters = iter(string)
for char in characters:
if char == '\\':
char = next(characters, '')
if char not in self.special_characters:
tokens[-1] += '\\' + char
else:
tokens.extend([Escaped(char), ''])
else:
tokens[-1] += char
return tokens
tokens = tokenize(string)
# Sorting by length ensures that the longest one will be
# chosen as it will overwrite any shorter ones starting
# at the same position in the `found` dictionary.
separators = sorted(self.separators, key=len)
for i, token in enumerate(tokens):
if isinstance(token, Escaped):
continue
found = {}
for sep in separators:
pos = token.find(sep)
if pos != -1:
found[pos] = sep
if found:
# Starting first, longest separator found.
sep = found[min(found.keys())]
key, value = token.split(sep, 1)
# Any preceding tokens are part of the key.
key = ''.join(tokens[:i]) + key
# Any following tokens are part of the value.
value += ''.join(tokens[i + 1:])
break
else:
raise argparse.ArgumentTypeError(
u'"%s" is not a valid value' % string)
return self.key_value_class(
key=key, value=value, sep=sep, orig=string)
class AuthCredentials(KeyValueArg):
"""Represents parsed credentials."""
def _getpass(self, prompt):
# To allow mocking.
return getpass.getpass(str(prompt))
def has_password(self):
return self.value is not None
def prompt_password(self, host):
try:
self.value = self._getpass(
'http: password for %s@%s: ' % (self.key, host))
except (EOFError, KeyboardInterrupt):
sys.stderr.write('\n')
sys.exit(0)
class AuthCredentialsArgType(KeyValueArgType):
"""A key-value arg type that parses credentials."""
key_value_class = AuthCredentials
def __call__(self, string):
"""Parse credentials from `string`.
("username" or "username:password").
"""
try:
return super().__call__(string)
except argparse.ArgumentTypeError:
# No password provided, will prompt for it later.
return self.key_value_class(
key=string,
value=None,
sep=SEPARATOR_CREDENTIALS,
orig=string
)
parse_auth = AuthCredentialsArgType(SEPARATOR_CREDENTIALS)
def readable_file_arg(filename):
try:
with open(filename, 'rb'):
return filename
except IOError as ex:
raise argparse.ArgumentTypeError('%s: %s' % (filename, ex.args[1]))

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httpie/cli/constants.py Normal file
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"""Parsing and processing of CLI input (args, auth credentials, files, stdin).
"""
import re
import ssl
# TODO: Use MultiDict for headers once added to `requests`.
# https://github.com/jakubroztocil/httpie/issues/130
# ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
# <https://tools.ietf.org/html/rfc3986#section-3.1>
URL_SCHEME_RE = re.compile(r'^[a-z][a-z0-9.+-]*://', re.IGNORECASE)
HTTP_POST = 'POST'
HTTP_GET = 'GET'
# Various separators used in args
SEPARATOR_HEADER = ':'
SEPARATOR_HEADER_EMPTY = ';'
SEPARATOR_CREDENTIALS = ':'
SEPARATOR_PROXY = ':'
SEPARATOR_DATA_STRING = '='
SEPARATOR_DATA_RAW_JSON = ':='
SEPARATOR_FILE_UPLOAD = '@'
SEPARATOR_DATA_EMBED_FILE_CONTENTS = '=@'
SEPARATOR_DATA_EMBED_RAW_JSON_FILE = ':=@'
SEPARATOR_QUERY_PARAM = '=='
# Separators that become request data
SEPARATOR_GROUP_DATA_ITEMS = frozenset({
SEPARATOR_DATA_STRING,
SEPARATOR_DATA_RAW_JSON,
SEPARATOR_FILE_UPLOAD,
SEPARATOR_DATA_EMBED_FILE_CONTENTS,
SEPARATOR_DATA_EMBED_RAW_JSON_FILE
})
# Separators for items whose value is a filename to be embedded
SEPARATOR_GROUP_DATA_EMBED_ITEMS = frozenset({
SEPARATOR_DATA_EMBED_FILE_CONTENTS,
SEPARATOR_DATA_EMBED_RAW_JSON_FILE,
})
# Separators for raw JSON items
SEPARATOR_GROUP_RAW_JSON_ITEMS = frozenset([
SEPARATOR_DATA_RAW_JSON,
SEPARATOR_DATA_EMBED_RAW_JSON_FILE,
])
# Separators allowed in ITEM arguments
SEPARATOR_GROUP_ALL_ITEMS = frozenset({
SEPARATOR_HEADER,
SEPARATOR_HEADER_EMPTY,
SEPARATOR_QUERY_PARAM,
SEPARATOR_DATA_STRING,
SEPARATOR_DATA_RAW_JSON,
SEPARATOR_FILE_UPLOAD,
SEPARATOR_DATA_EMBED_FILE_CONTENTS,
SEPARATOR_DATA_EMBED_RAW_JSON_FILE,
})
# Output options
OUT_REQ_HEAD = 'H'
OUT_REQ_BODY = 'B'
OUT_RESP_HEAD = 'h'
OUT_RESP_BODY = 'b'
OUTPUT_OPTIONS = frozenset({
OUT_REQ_HEAD,
OUT_REQ_BODY,
OUT_RESP_HEAD,
OUT_RESP_BODY
})
# Pretty
PRETTY_MAP = {
'all': ['format', 'colors'],
'colors': ['colors'],
'format': ['format'],
'none': []
}
PRETTY_STDOUT_TTY_ONLY = object()
# Defaults
OUTPUT_OPTIONS_DEFAULT = OUT_RESP_HEAD + OUT_RESP_BODY
OUTPUT_OPTIONS_DEFAULT_STDOUT_REDIRECTED = OUT_RESP_BODY
SSL_VERSION_ARG_MAPPING = {
'ssl2.3': 'PROTOCOL_SSLv23',
'ssl3': 'PROTOCOL_SSLv3',
'tls1': 'PROTOCOL_TLSv1',
'tls1.1': 'PROTOCOL_TLSv1_1',
'tls1.2': 'PROTOCOL_TLSv1_2',
'tls1.3': 'PROTOCOL_TLSv1_3',
}
SSL_VERSION_ARG_MAPPING = {
cli_arg: getattr(ssl, ssl_constant)
for cli_arg, ssl_constant in SSL_VERSION_ARG_MAPPING.items()
if hasattr(ssl, ssl_constant)
}

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httpie/cli/definition.py Normal file
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"""
CLI arguments definition.
"""
from argparse import (FileType, OPTIONAL, SUPPRESS, ZERO_OR_MORE)
from textwrap import dedent, wrap
from httpie import __doc__, __version__
from httpie.cli.argparser import HTTPieArgumentParser
from httpie.cli.argtypes import (
KeyValueArgType, SessionNameValidator, readable_file_arg,
)
from httpie.cli.constants import (
OUTPUT_OPTIONS, OUTPUT_OPTIONS_DEFAULT, OUT_REQ_BODY, OUT_REQ_HEAD,
OUT_RESP_BODY, OUT_RESP_HEAD, PRETTY_MAP, PRETTY_STDOUT_TTY_ONLY,
SEPARATOR_GROUP_ALL_ITEMS, SEPARATOR_PROXY, SSL_VERSION_ARG_MAPPING,
)
from httpie.output.formatters.colors import (
AUTO_STYLE, AVAILABLE_STYLES, DEFAULT_STYLE,
)
from httpie.plugins import plugin_manager
from httpie.plugins.builtin import BuiltinAuthPlugin
from httpie.sessions import DEFAULT_SESSIONS_DIR
parser = HTTPieArgumentParser(
prog='http',
description='%s <http://httpie.org>' % __doc__.strip(),
epilog=dedent("""
For every --OPTION there is also a --no-OPTION that reverts OPTION
to its default value.
Suggestions and bug reports are greatly appreciated:
https://github.com/jakubroztocil/httpie/issues
"""),
)
#######################################################################
# Positional arguments.
#######################################################################
positional = parser.add_argument_group(
title='Positional Arguments',
description=dedent("""
These arguments come after any flags and in the order they are listed here.
Only URL is required.
""")
)
positional.add_argument(
dest='method',
metavar='METHOD',
nargs=OPTIONAL,
default=None,
help="""
The HTTP method to be used for the request (GET, POST, PUT, DELETE, ...).
This argument can be omitted in which case HTTPie will use POST if there
is some data to be sent, otherwise GET:
$ http example.org # => GET
$ http example.org hello=world # => POST
"""
)
positional.add_argument(
dest='url',
metavar='URL',
help="""
The scheme defaults to 'http://' if the URL does not include one.
(You can override this with: --default-scheme=https)
You can also use a shorthand for localhost
$ http :3000 # => http://localhost:3000
$ http :/foo # => http://localhost/foo
"""
)
positional.add_argument(
dest='request_items',
metavar='REQUEST_ITEM',
nargs=ZERO_OR_MORE,
default=None,
type=KeyValueArgType(*SEPARATOR_GROUP_ALL_ITEMS),
help=r"""
Optional key-value pairs to be included in the request. The separator used
determines the type:
':' HTTP headers:
Referer:http://httpie.org Cookie:foo=bar User-Agent:bacon/1.0
'==' URL parameters to be appended to the request URI:
search==httpie
'=' Data fields to be serialized into a JSON object (with --json, -j)
or form data (with --form, -f):
name=HTTPie language=Python description='CLI HTTP client'
':=' Non-string JSON data fields (only with --json, -j):
awesome:=true amount:=42 colors:='["red", "green", "blue"]'
'@' Form file fields (only with --form, -f):
cs@~/Documents/CV.pdf
'=@' A data field like '=', but takes a file path and embeds its content:
essay=@Documents/essay.txt
':=@' A raw JSON field like ':=', but takes a file path and embeds its content:
package:=@./package.json
You can use a backslash to escape a colliding separator in the field name:
field-name-with\:colon=value
"""
)
#######################################################################
# Content type.
#######################################################################
content_type = parser.add_argument_group(
title='Predefined Content Types',
description=None
)
content_type.add_argument(
'--json', '-j',
action='store_true',
help="""
(default) Data items from the command line are serialized as a JSON object.
The Content-Type and Accept headers are set to application/json
(if not specified).
"""
)
content_type.add_argument(
'--form', '-f',
action='store_true',
help="""
Data items from the command line are serialized as form fields.
The Content-Type is set to application/x-www-form-urlencoded (if not
specified). The presence of any file fields results in a
multipart/form-data request.
"""
)
#######################################################################
# Content processing.
#######################################################################
content_processing = parser.add_argument_group(
title='Content Processing Options',
description=None
)
content_processing.add_argument(
'--compress', '-x',
action='count',
help="""
Content compressed (encoded) with Deflate algorithm.
The Content-Encoding header is set to deflate.
Compression is skipped if it appears that compression ratio is
negative. Compression can be forced by repeating the argument.
"""
)
#######################################################################
# Output processing
#######################################################################
output_processing = parser.add_argument_group(title='Output Processing')
output_processing.add_argument(
'--pretty',
dest='prettify',
default=PRETTY_STDOUT_TTY_ONLY,
choices=sorted(PRETTY_MAP.keys()),
help="""
Controls output processing. The value can be "none" to not prettify
the output (default for redirected output), "all" to apply both colors
and formatting (default for terminal output), "colors", or "format".
"""
)
output_processing.add_argument(
'--style', '-s',
dest='style',
metavar='STYLE',
default=DEFAULT_STYLE,
choices=AVAILABLE_STYLES,
help="""
Output coloring style (default is "{default}"). One of:
{available_styles}
The "{auto_style}" style follows your terminal's ANSI color styles.
For non-{auto_style} styles to work properly, please make sure that the
$TERM environment variable is set to "xterm-256color" or similar
(e.g., via `export TERM=xterm-256color' in your ~/.bashrc).
""".format(
default=DEFAULT_STYLE,
available_styles='\n'.join(
'{0}{1}'.format(8 * ' ', line.strip())
for line in wrap(', '.join(sorted(AVAILABLE_STYLES)), 60)
).rstrip(),
auto_style=AUTO_STYLE,
)
)
#######################################################################
# Output options
#######################################################################
output_options = parser.add_argument_group(title='Output Options')
output_options.add_argument(
'--print', '-p',
dest='output_options',
metavar='WHAT',
help=f"""
String specifying what the output should contain:
'{OUT_REQ_HEAD}' request headers
'{OUT_REQ_BODY}' request body
'{OUT_RESP_HEAD}' response headers
'{OUT_RESP_BODY}' response body
The default behaviour is '{OUTPUT_OPTIONS_DEFAULT}' (i.e., the response
headers and body is printed), if standard output is not redirected.
If the output is piped to another program or to a file, then only the
response body is printed by default.
"""
)
output_options.add_argument(
'--headers', '-h',
dest='output_options',
action='store_const',
const=OUT_RESP_HEAD,
help=f"""
Print only the response headers. Shortcut for --print={OUT_RESP_HEAD}.
"""
)
output_options.add_argument(
'--body', '-b',
dest='output_options',
action='store_const',
const=OUT_RESP_BODY,
help=f"""
Print only the response body. Shortcut for --print={OUT_RESP_BODY}.
"""
)
output_options.add_argument(
'--verbose', '-v',
dest='verbose',
action='store_true',
help="""
Verbose output. Print the whole request as well as the response. Also print
any intermediary requests/responses (such as redirects).
It's a shortcut for: --all --print={0}
""".format(''.join(OUTPUT_OPTIONS))
)
output_options.add_argument(
'--all',
default=False,
action='store_true',
help="""
By default, only the final request/response is shown. Use this flag to show
any intermediary requests/responses as well. Intermediary requests include
followed redirects (with --follow), the first unauthorized request when
Digest auth is used (--auth=digest), etc.
"""
)
output_options.add_argument(
'--history-print', '-P',
dest='output_options_history',
metavar='WHAT',
help="""
The same as --print, -p but applies only to intermediary requests/responses
(such as redirects) when their inclusion is enabled with --all. If this
options is not specified, then they are formatted the same way as the final
response.
"""
)
output_options.add_argument(
'--stream', '-S',
action='store_true',
default=False,
help="""
Always stream the output by line, i.e., behave like `tail -f'.
Without --stream and with --pretty (either set or implied),
HTTPie fetches the whole response before it outputs the processed data.
Set this option when you want to continuously display a prettified
long-lived response, such as one from the Twitter streaming API.
It is useful also without --pretty: It ensures that the output is flushed
more often and in smaller chunks.
"""
)
output_options.add_argument(
'--output', '-o',
type=FileType('a+b'),
dest='output_file',
metavar='FILE',
help="""
Save output to FILE instead of stdout. If --download is also set, then only
the response body is saved to FILE. Other parts of the HTTP exchange are
printed to stderr.
"""
)
output_options.add_argument(
'--download', '-d',
action='store_true',
default=False,
help="""
Do not print the response body to stdout. Rather, download it and store it
in a file. The filename is guessed unless specified with --output
[filename]. This action is similar to the default behaviour of wget.
"""
)
output_options.add_argument(
'--continue', '-c',
dest='download_resume',
action='store_true',
default=False,
help="""
Resume an interrupted download. Note that the --output option needs to be
specified as well.
"""
)
#######################################################################
# Sessions
#######################################################################
sessions = parser.add_argument_group(title='Sessions') \
.add_mutually_exclusive_group(required=False)
session_name_validator = SessionNameValidator(
'Session name contains invalid characters.'
)
sessions.add_argument(
'--session',
metavar='SESSION_NAME_OR_PATH',
type=session_name_validator,
help=f"""
Create, or reuse and update a session. Within a session, custom headers,
auth credential, as well as any cookies sent by the server persist between
requests.
Session files are stored in:
{DEFAULT_SESSIONS_DIR}/<HOST>/<SESSION_NAME>.json.
"""
)
sessions.add_argument(
'--session-read-only',
metavar='SESSION_NAME_OR_PATH',
type=session_name_validator,
help="""
Create or read a session without updating it form the request/response
exchange.
"""
)
#######################################################################
# Authentication
#######################################################################
# ``requests.request`` keyword arguments.
auth = parser.add_argument_group(title='Authentication')
auth.add_argument(
'--auth', '-a',
default=None,
metavar='USER[:PASS]',
help="""
If only the username is provided (-a username), HTTPie will prompt
for the password.
""",
)
class _AuthTypeLazyChoices:
# Needed for plugin testing
def __contains__(self, item):
return item in plugin_manager.get_auth_plugin_mapping()
def __iter__(self):
return iter(sorted(plugin_manager.get_auth_plugin_mapping().keys()))
_auth_plugins = plugin_manager.get_auth_plugins()
auth.add_argument(
'--auth-type', '-A',
choices=_AuthTypeLazyChoices(),
default=None,
help="""
The authentication mechanism to be used. Defaults to "{default}".
{types}
""".format(default=_auth_plugins[0].auth_type, types='\n '.join(
'"{type}": {name}{package}{description}'.format(
type=plugin.auth_type,
name=plugin.name,
package=(
'' if issubclass(plugin, BuiltinAuthPlugin)
else ' (provided by %s)' % plugin.package_name
),
description=(
'' if not plugin.description else
'\n ' + ('\n '.join(wrap(plugin.description)))
)
)
for plugin in _auth_plugins
)),
)
auth.add_argument(
'--ignore-netrc',
default=False,
action='store_true',
help="""
Ignore credentials from .netrc.
""",
)
#######################################################################
# Network
#######################################################################
network = parser.add_argument_group(title='Network')
network.add_argument(
'--proxy',
default=[],
action='append',
metavar='PROTOCOL:PROXY_URL',
type=KeyValueArgType(SEPARATOR_PROXY),
help="""
String mapping protocol to the URL of the proxy
(e.g. http:http://foo.bar:3128). You can specify multiple proxies with
different protocols. The environment variables $ALL_PROXY, $HTTP_PROXY,
and $HTTPS_proxy are supported as well.
"""
)
network.add_argument(
'--follow', '-F',
default=False,
action='store_true',
help="""
Follow 30x Location redirects.
"""
)
network.add_argument(
'--max-redirects',
type=int,
default=30,
help="""
By default, requests have a limit of 30 redirects (works with --follow).
"""
)
network.add_argument(
'--max-headers',
type=int,
default=0,
help="""
The maximum number of response headers to be read before giving up
(default 0, i.e., no limit).
"""
)
network.add_argument(
'--timeout',
type=float,
default=0,
metavar='SECONDS',
help="""
The connection timeout of the request in seconds.
The default value is 0, i.e., there is no timeout limit.
This is not a time limit on the entire response download;
rather, an error is reported if the server has not issued a response for
timeout seconds (more precisely, if no bytes have been received on
the underlying socket for timeout seconds).
"""
)
network.add_argument(
'--check-status',
default=False,
action='store_true',
help="""
By default, HTTPie exits with 0 when no network or other fatal errors
occur. This flag instructs HTTPie to also check the HTTP status code and
exit with an error if the status indicates one.
When the server replies with a 4xx (Client Error) or 5xx (Server Error)
status code, HTTPie exits with 4 or 5 respectively. If the response is a
3xx (Redirect) and --follow hasn't been set, then the exit status is 3.
Also an error message is written to stderr if stdout is redirected.
"""
)
#######################################################################
# SSL
#######################################################################
ssl = parser.add_argument_group(title='SSL')
ssl.add_argument(
'--verify',
default='yes',
help="""
Set to "no" (or "false") to skip checking the host's SSL certificate.
Defaults to "yes" ("true"). You can also pass the path to a CA_BUNDLE file
for private certs. (Or you can set the REQUESTS_CA_BUNDLE environment
variable instead.)
"""
)
ssl.add_argument(
'--ssl', # TODO: Maybe something more general, such as --secure-protocol?
dest='ssl_version',
choices=list(sorted(SSL_VERSION_ARG_MAPPING.keys())),
help="""
The desired protocol version to use. This will default to
SSL v2.3 which will negotiate the highest protocol that both
the server and your installation of OpenSSL support. Available protocols
may vary depending on OpenSSL installation (only the supported ones
are shown here).
"""
)
ssl.add_argument(
'--cert',
default=None,
type=readable_file_arg,
help="""
You can specify a local cert to use as client side SSL certificate.
This file may either contain both private key and certificate or you may
specify --cert-key separately.
"""
)
ssl.add_argument(
'--cert-key',
default=None,
type=readable_file_arg,
help="""
The private key to use with SSL. Only needed if --cert is given and the
certificate file does not contain the private key.
"""
)
#######################################################################
# Troubleshooting
#######################################################################
troubleshooting = parser.add_argument_group(title='Troubleshooting')
troubleshooting.add_argument(
'--ignore-stdin', '-I',
action='store_true',
default=False,
help="""
Do not attempt to read stdin.
"""
)
troubleshooting.add_argument(
'--help',
action='help',
default=SUPPRESS,
help="""
Show this help message and exit.
"""
)
troubleshooting.add_argument(
'--version',
action='version',
version=__version__,
help="""
Show version and exit.
"""
)
troubleshooting.add_argument(
'--traceback',
action='store_true',
default=False,
help="""
Prints the exception traceback should one occur.
"""
)
troubleshooting.add_argument(
'--default-scheme',
default="http",
help="""
The default scheme to use if not specified in the URL.
"""
)
troubleshooting.add_argument(
'--debug',
action='store_true',
default=False,
help="""
Prints the exception traceback should one occur, as well as other
information useful for debugging HTTPie itself and for reporting bugs.
"""
)

53
httpie/cli/dicts.py Normal file
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@@ -0,0 +1,53 @@
from collections import OrderedDict
from requests.structures import CaseInsensitiveDict
class RequestHeadersDict(CaseInsensitiveDict):
"""
Headers are case-insensitive and multiple values are currently not supported.
"""
class RequestJSONDataDict(OrderedDict):
pass
class MultiValueOrderedDict(OrderedDict):
"""Multi-value dict for URL parameters and form data."""
def __setitem__(self, key, value):
"""
If `key` is assigned more than once, `self[key]` holds a
`list` of all the values.
This allows having multiple fields with the same name in form
data and URL params.
"""
assert not isinstance(value, list)
if key not in self:
super().__setitem__(key, value)
else:
if not isinstance(self[key], list):
super().__setitem__(key, [self[key]])
self[key].append(value)
class RequestQueryParamsDict(MultiValueOrderedDict):
pass
class RequestDataDict(MultiValueOrderedDict):
def items(self):
for key, values in super(MultiValueOrderedDict, self).items():
if not isinstance(values, list):
values = [values]
for value in values:
yield key, value
class RequestFilesDict(RequestDataDict):
pass

2
httpie/cli/exceptions.py Normal file
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class ParseError(Exception):
pass

162
httpie/cli/requestitems.py Normal file
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@@ -0,0 +1,162 @@
import os
from io import BytesIO
from typing import Callable, Dict, IO, List, Optional, Tuple, Union
from httpie.cli.argtypes import KeyValueArg
from httpie.cli.constants import (
SEPARATOR_DATA_EMBED_FILE_CONTENTS, SEPARATOR_DATA_EMBED_RAW_JSON_FILE,
SEPARATOR_DATA_RAW_JSON,
SEPARATOR_DATA_STRING, SEPARATOR_FILE_UPLOAD, SEPARATOR_HEADER,
SEPARATOR_HEADER_EMPTY,
SEPARATOR_QUERY_PARAM,
)
from httpie.cli.dicts import (
RequestDataDict, RequestFilesDict, RequestHeadersDict, RequestJSONDataDict,
RequestQueryParamsDict,
)
from httpie.cli.exceptions import ParseError
from httpie.utils import (get_content_type, load_json_preserve_order)
class RequestItems:
def __init__(self, as_form=False, chunked=False):
self.headers = RequestHeadersDict()
self.data = RequestDataDict() if as_form else RequestJSONDataDict()
self.files = RequestFilesDict()
self.params = RequestQueryParamsDict()
self.chunked = chunked
@classmethod
def from_args(
cls,
request_item_args: List[KeyValueArg],
as_form=False,
chunked=False
) -> 'RequestItems':
instance = RequestItems(as_form=as_form, chunked=chunked)
rules: Dict[str, Tuple[Callable, dict]] = {
SEPARATOR_HEADER: (
process_header_arg,
instance.headers,
),
SEPARATOR_HEADER_EMPTY: (
process_empty_header_arg,
instance.headers,
),
SEPARATOR_QUERY_PARAM: (
process_query_param_arg,
instance.params,
),
SEPARATOR_FILE_UPLOAD: (
process_file_upload_arg,
instance.files,
),
SEPARATOR_DATA_STRING: (
process_data_item_arg,
instance.data,
),
SEPARATOR_DATA_EMBED_FILE_CONTENTS: (
process_data_embed_file_contents_arg,
instance.data,
),
SEPARATOR_DATA_RAW_JSON: (
process_data_raw_json_embed_arg,
instance.data,
),
SEPARATOR_DATA_EMBED_RAW_JSON_FILE: (
process_data_embed_raw_json_file_arg,
instance.data,
),
}
for arg in request_item_args:
processor_func, target_dict = rules[arg.sep]
target_dict[arg.key] = processor_func(arg)
return instance
JSONType = Union[str, bool, int, list, dict]
def process_header_arg(arg: KeyValueArg) -> Optional[str]:
return arg.value or None
def process_empty_header_arg(arg: KeyValueArg) -> str:
if arg.value:
raise ParseError(
'Invalid item "%s" '
'(to specify an empty header use `Header;`)'
% arg.orig
)
return arg.value
def process_query_param_arg(arg: KeyValueArg) -> str:
return arg.value
def process_file_upload_arg(arg: KeyValueArg) -> Tuple[str, IO, str]:
filename = arg.value
try:
with open(os.path.expanduser(filename), 'rb') as f:
contents = f.read()
except IOError as e:
raise ParseError('"%s": %s' % (arg.orig, e))
return (
os.path.basename(filename),
BytesIO(contents),
get_content_type(filename),
)
def parse_file_item_chunked(arg: KeyValueArg):
fn = arg.value
try:
f = open(os.path.expanduser(fn), 'rb')
except IOError as e:
raise ParseError('"%s": %s' % (arg.orig, e))
return os.path.basename(fn), f, get_content_type(fn)
def process_data_item_arg(arg: KeyValueArg) -> str:
return arg.value
def process_data_embed_file_contents_arg(arg: KeyValueArg) -> str:
return load_text_file(arg)
def process_data_embed_raw_json_file_arg(arg: KeyValueArg) -> JSONType:
contents = load_text_file(arg)
value = load_json(arg, contents)
return value
def process_data_raw_json_embed_arg(arg: KeyValueArg) -> JSONType:
value = load_json(arg, arg.value)
return value
def load_text_file(item) -> str:
path = item.value
try:
with open(os.path.expanduser(path), 'rb') as f:
return f.read().decode('utf8')
except IOError as e:
raise ParseError('"%s": %s' % (item.orig, e))
except UnicodeDecodeError:
raise ParseError(
'"%s": cannot embed the content of "%s",'
' not a UTF8 or ASCII-encoded text file'
% (item.orig, item.value)
)
def load_json(arg: KeyValueArg, contents: str) -> JSONType:
try:
return load_json_preserve_order(contents)
except ValueError as e:
raise ParseError('"%s": %s' % (arg.orig, e))