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Dir : ~/proc/thread-self/root/usr/share/doc/python3-pip/
View File Name : pip_sphinxext.py

"""pip sphinx extensions"""

import optparse
import sys
from textwrap import dedent

from docutils import nodes
from docutils.parsers import rst
from docutils.statemachine import ViewList

from pip._internal.cli import cmdoptions
from pip._internal.commands import create_command


class PipCommandUsage(rst.Directive):
    required_arguments = 1

    def run(self):
        cmd = create_command(self.arguments[0])
        usage = dedent(
            cmd.usage.replace('%prog', 'pip {}'.format(cmd.name))
        ).strip()
        node = nodes.literal_block(usage, usage)
        return [node]


class PipCommandDescription(rst.Directive):
    required_arguments = 1

    def run(self):
        node = nodes.paragraph()
        node.document = self.state.document
        desc = ViewList()
        cmd = create_command(self.arguments[0])
        description = dedent(cmd.__doc__)
        for line in description.split('\n'):
            desc.append(line, "")
        self.state.nested_parse(desc, 0, node)
        return [node]


class PipOptions(rst.Directive):

    def _format_option(self, option, cmd_name=None):
        if cmd_name:
            bookmark_line = ".. _`%s_%s`:" % (cmd_name, option._long_opts[0])
        else:
            bookmark_line = ".. _`%s`:" % option._long_opts[0]
        line = ".. option:: "
        if option._short_opts:
            line += option._short_opts[0]
        if option._short_opts and option._long_opts:
            line += ", %s" % option._long_opts[0]
        elif option._long_opts:
            line += option._long_opts[0]
        if option.takes_value():
            metavar = option.metavar or option.dest.lower()
            line += " <%s>" % metavar.lower()
        # fix defaults
        opt_help = option.help.replace('%default', str(option.default))
        # fix paths with sys.prefix
        opt_help = opt_help.replace(sys.prefix, "<sys.prefix>")
        return [bookmark_line, "", line, "", "    %s" % opt_help, ""]

    def _format_options(self, options, cmd_name=None):
        for option in options:
            if option.help == optparse.SUPPRESS_HELP:
                continue
            for line in self._format_option(option, cmd_name):
                self.view_list.append(line, "")

    def run(self):
        node = nodes.paragraph()
        node.document = self.state.document
        self.view_list = ViewList()
        self.process_options()
        self.state.nested_parse(self.view_list, 0, node)
        return [node]


class PipGeneralOptions(PipOptions):
    def process_options(self):
        self._format_options(
            [o() for o in cmdoptions.general_group['options']]
        )


class PipIndexOptions(PipOptions):
    required_arguments = 1

    def process_options(self):
        cmd_name = self.arguments[0]
        self._format_options(
            [o() for o in cmdoptions.index_group['options']],
            cmd_name=cmd_name,
        )


class PipCommandOptions(PipOptions):
    required_arguments = 1

    def process_options(self):
        cmd = create_command(self.arguments[0])
        self._format_options(
            cmd.parser.option_groups[0].option_list,
            cmd_name=cmd.name,
        )


def setup(app):
    app.add_directive('pip-command-usage', PipCommandUsage)
    app.add_directive('pip-command-description', PipCommandDescription)
    app.add_directive('pip-command-options', PipCommandOptions)
    app.add_directive('pip-general-options', PipGeneralOptions)
    app.add_directive('pip-index-options', PipIndexOptions)