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126 lines
4.0 KiB
126 lines
4.0 KiB
import sys
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import textwrap
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from optparse import Values
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from typing import List
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from pip._internal.cli.base_command import Command
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from pip._internal.cli.status_codes import SUCCESS
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from pip._internal.utils.misc import get_prog
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BASE_COMPLETION = """
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# pip {shell} completion start{script}# pip {shell} completion end
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"""
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COMPLETION_SCRIPTS = {
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"bash": """
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_pip_completion()
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{{
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COMPREPLY=( $( COMP_WORDS="${{COMP_WORDS[*]}}" \\
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COMP_CWORD=$COMP_CWORD \\
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PIP_AUTO_COMPLETE=1 $1 2>/dev/null ) )
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}}
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complete -o default -F _pip_completion {prog}
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""",
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"zsh": """
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function _pip_completion {{
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local words cword
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read -Ac words
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read -cn cword
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reply=( $( COMP_WORDS="$words[*]" \\
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COMP_CWORD=$(( cword-1 )) \\
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PIP_AUTO_COMPLETE=1 $words[1] 2>/dev/null ))
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}}
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compctl -K _pip_completion {prog}
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""",
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"fish": """
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function __fish_complete_pip
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set -lx COMP_WORDS (commandline -o) ""
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set -lx COMP_CWORD ( \\
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math (contains -i -- (commandline -t) $COMP_WORDS)-1 \\
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)
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set -lx PIP_AUTO_COMPLETE 1
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string split \\ -- (eval $COMP_WORDS[1])
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end
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complete -fa "(__fish_complete_pip)" -c {prog}
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""",
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"powershell": """
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if ((Test-Path Function:\\TabExpansion) -and -not `
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(Test-Path Function:\\_pip_completeBackup)) {{
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Rename-Item Function:\\TabExpansion _pip_completeBackup
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}}
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function TabExpansion($line, $lastWord) {{
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$lastBlock = [regex]::Split($line, '[|;]')[-1].TrimStart()
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if ($lastBlock.StartsWith("{prog} ")) {{
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$Env:COMP_WORDS=$lastBlock
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$Env:COMP_CWORD=$lastBlock.Split().Length - 1
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$Env:PIP_AUTO_COMPLETE=1
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(& {prog}).Split()
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Remove-Item Env:COMP_WORDS
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Remove-Item Env:COMP_CWORD
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Remove-Item Env:PIP_AUTO_COMPLETE
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}}
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elseif (Test-Path Function:\\_pip_completeBackup) {{
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# Fall back on existing tab expansion
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_pip_completeBackup $line $lastWord
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}}
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}}
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""",
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}
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class CompletionCommand(Command):
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"""A helper command to be used for command completion."""
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ignore_require_venv = True
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def add_options(self) -> None:
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self.cmd_opts.add_option(
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"--bash",
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"-b",
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action="store_const",
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const="bash",
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dest="shell",
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help="Emit completion code for bash",
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)
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self.cmd_opts.add_option(
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"--zsh",
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"-z",
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action="store_const",
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const="zsh",
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dest="shell",
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help="Emit completion code for zsh",
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)
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self.cmd_opts.add_option(
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"--fish",
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"-f",
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action="store_const",
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const="fish",
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dest="shell",
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help="Emit completion code for fish",
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)
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self.cmd_opts.add_option(
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"--powershell",
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"-p",
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action="store_const",
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const="powershell",
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dest="shell",
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help="Emit completion code for powershell",
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)
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self.parser.insert_option_group(0, self.cmd_opts)
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def run(self, options: Values, args: List[str]) -> int:
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"""Prints the completion code of the given shell"""
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shells = COMPLETION_SCRIPTS.keys()
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shell_options = ["--" + shell for shell in sorted(shells)]
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if options.shell in shells:
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script = textwrap.dedent(
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COMPLETION_SCRIPTS.get(options.shell, "").format(prog=get_prog())
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)
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print(BASE_COMPLETION.format(script=script, shell=options.shell))
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return SUCCESS
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else:
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sys.stderr.write(
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"ERROR: You must pass {}\n".format(" or ".join(shell_options))
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)
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return SUCCESS
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