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import re
import textwrap
from typing import AbstractSet, Iterable, Optional, Tuple
from rich.console import RenderableType
from rich.highlighter import RegexHighlighter
from rich.padding import Padding
from rich.table import Table
from rich.text import Text
from httpie.cli.constants import SEPARATOR_GROUP_ALL_ITEMS
from httpie.cli.options import Argument, ParserSpec, Qualifiers
from httpie.output.ui.palette import GenericColor
SEPARATORS = '|'.join(map(re.escape, SEPARATOR_GROUP_ALL_ITEMS))
STYLE_METAVAR = GenericColor.YELLOW
STYLE_SWITCH = GenericColor.GREEN
STYLE_PROGRAM_NAME = GenericColor.GREEN # .boldify()
STYLE_USAGE_OPTIONAL = GenericColor.GREY
STYLE_USAGE_REGULAR = GenericColor.WHITE
STYLE_USAGE_ERROR = GenericColor.RED
STYLE_USAGE_MISSING = GenericColor.YELLOW
STYLE_BOLD = 'bold'
MAX_CHOICE_CHARS = 80
LEFT_PADDING_2 = (0, 0, 0, 2)
LEFT_PADDING_3 = (0, 0, 0, 3)
LEFT_PADDING_4 = (0, 0, 0, 4)
LEFT_PADDING_5 = (0, 0, 0, 4)
LEFT_INDENT_2 = (1, 0, 0, 2)
LEFT_INDENT_3 = (1, 0, 0, 3)
LEFT_INDENT_BOTTOM_3 = (0, 0, 1, 3)
MORE_INFO_COMMANDS = """
To learn more, you can try:
-> running 'http --manual'
-> visiting our full documentation at https://httpie.io/docs/cli
"""
class OptionsHighlighter(RegexHighlighter):
highlights = [
r'(^|\W)(?P<option>\-{1,2}[\w|-]+)(?![a-zA-Z0-9])',
r'(?P<bold>HTTPie)',
]
options_highlighter = OptionsHighlighter()
def unpack_argument(
argument: Argument,
) -> Tuple[Text, Text]:
opt1 = opt2 = ''
style = None
if argument.aliases:
if len(argument.aliases) >= 2:
opt2, opt1 = argument.aliases
else:
(opt1,) = argument.aliases
else:
opt1 = argument.metavar
style = STYLE_USAGE_REGULAR
return Text(opt1, style=style), Text(opt2)
def to_usage(
spec: ParserSpec,
*,
program_name: Optional[str] = None,
whitelist: AbstractSet[str] = frozenset()
) -> RenderableType:
shown_arguments = [
argument
for group in spec.groups
for argument in group.arguments
if (not argument.aliases or whitelist.intersection(argument.aliases))
]
# Sort the shown_arguments so that --dash options are
# shown first
shown_arguments.sort(key=lambda argument: argument.aliases, reverse=True)
text = Text(program_name or spec.program, style=STYLE_BOLD)
for argument in shown_arguments:
text.append(' ')
is_whitelisted = whitelist.intersection(argument.aliases)
if argument.aliases:
name = '/'.join(sorted(argument.aliases, key=len))
else:
name = argument.metavar
nargs = argument.configuration.get('nargs')
if nargs is Qualifiers.OPTIONAL:
text.append('[' + name + ']', style=STYLE_USAGE_OPTIONAL)
elif nargs is Qualifiers.ZERO_OR_MORE:
text.append(
'[' + name + ' ...]',
style=STYLE_USAGE_OPTIONAL,
)
else:
text.append(
name,
style=STYLE_USAGE_ERROR
if is_whitelisted
else STYLE_USAGE_REGULAR,
)
raw_form = argument.serialize()
if raw_form.get('choices'):
text.append(' ')
text.append(
'{' + ', '.join(raw_form['choices']) + '}',
style=STYLE_USAGE_MISSING,
)
return text
# This part is loosely based on the rich-click's help message
# generation.
def to_help_message(
spec: ParserSpec,
) -> Iterable[RenderableType]:
yield Padding(
options_highlighter(spec.description),
LEFT_INDENT_2,
)
yield Padding(
Text('Usage', style=STYLE_SWITCH),
LEFT_INDENT_2,
)
yield Padding(to_usage(spec), LEFT_INDENT_3)
group_rows = {}
for group in spec.groups:
options_rows = []
for argument in group.arguments:
if argument.is_hidden:
continue
opt1, opt2 = unpack_argument(argument)
if opt2:
opt1.append('/')
opt1.append(opt2)
# Column for a metavar, if we have one
metavar = Text(style=STYLE_METAVAR)
metavar.append(argument.configuration.get('metavar', ''))
if opt1 == metavar:
metavar = Text('')
raw_form = argument.serialize()
desc = raw_form.get('short_description', '')
if raw_form.get('choices'):
desc += ' (choices: '
desc += textwrap.shorten(
', '.join(raw_form.get('choices')),
MAX_CHOICE_CHARS,
)
desc += ')'
rows = [
Padding(
options_highlighter(opt1),
LEFT_PADDING_2,
),
metavar,
options_highlighter(desc),
]
options_rows.append(rows)
if argument.configuration.get('nested_options'):
options_rows.extend(
[
(
Padding(
Text(
key,
style=STYLE_USAGE_OPTIONAL,
),
LEFT_PADDING_4,
),
value,
dec,
)
for key, value, dec in argument.nested_options
]
)
group_rows[group.name] = options_rows
options_table = Table(highlight=False, box=None, show_header=False)
for group_name, options_rows in group_rows.items():
options_table.add_row(Text(), Text(), Text())
options_table.add_row(
Text(group_name, style=STYLE_SWITCH),
Text(),
Text(),
)
options_table.add_row(Text(), Text(), Text())
for row in options_rows:
options_table.add_row(*row)
yield Padding(
Text('Options', style=STYLE_SWITCH),
LEFT_INDENT_2,
)
yield Padding(options_table, LEFT_PADDING_2)
yield Padding(
Text('More Information', style=STYLE_SWITCH),
LEFT_INDENT_2,
)
yield Padding(
MORE_INFO_COMMANDS.rstrip('\n'),
LEFT_PADDING_3
)
yield Padding(
spec.epilog.rstrip('\n'),
LEFT_INDENT_BOTTOM_3,
)
|
