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Re: [PATCH/RFC] Completion: Add _composer



dana wrote on Mon, 17 Dec 2018 17:09 -0600:
> * Perhaps most questionable is __composer_packages. I couldn't figure out how
>   to reliably complete arbitrary package names, because Composer is incredibly
>   slow to return them, and there are so many that it didn't perform much better
>   when i tried the usual array-caching mechanism. Even asking Composer about
>   packages listed in the project JSON files is pretty slow, and not always
>   accurate. To work around those problems i 'seeded' the function with a bunch
>   of the most popular packages, and then i used `grep -o` to 'parse' the names
>   out of the JSON files. Hard-coding package names in feels especially weird,
>   but...?

Are you familiar with _store_cache and cache-policy?  It's not clear from the comments
whether you've tried that.

> Sorry in advance to anyone who actually combs through this
> 
> dana
> 
> 
> diff --git a/Completion/Unix/Command/_composer b/Completion/Unix/
> Command/_composer
> new file mode 100644
> index 000000000..2f7dc5421
> --- /dev/null
> +++ b/Completion/Unix/Command/_composer
> @@ -0,0 +1,828 @@
> +#compdef composer composer.phar
> +
> +# Notes:
> +# - With some re-arranging, this function could be used as a base for 
> completing
> +#   any Symfony Console application. It's worth mentioning that most 
> Console
> +#   applications provide their help output in structured XML and JSON 
> formats,
> +#   and a helper function could be written to parse these and produce 
> basic
> +#   completion similar to what `_arguments --` does. But it wouldn't be 
> fully
> +#   featured like this
> +# - @todo As mentioned below, we don't offer full completion for 
> arbitrary
> +#   package names; see __composer_packages for details
> +# - @todo We don't complete custom commands (including script aliases). 
> This is
> +#   easy to do in the general case, but it probably requires some 
> clever caching
> +#   to avoid introducing a noticeable lag to every completion 
> operation, due to
> +#   the way command resolution works and the fact that discovering 
> custom
> +#   commands requires making slow calls to Composer
> +# - @todo We don't complete version constraints
> +
> +# _call_program wrapper (same eval/quoting rules applies)
> +# $1     => tag
> +# $2 ... => composer arguments
> +(( $+functions[__composer_call] )) ||
> +__composer_call() {
> +  local -a cmd
> +
> +  __composer_update_work_dir
> +
> +  cmd=( ${_composer_cmd:-composer} -d${_composer_work_dir:-${(q)PWD}} )
> +  (( _composer_is_global )) && cmd+=( global )
> +
> +  _call_program $1 $cmd "${@[2,-1]}"
> +}
> +
> +# Resolve potentially abbreviated/aliased command name to canonical 
> name
> +# $1 => name of scalar parameter to set
> +# $2 => provided command name
> +(( $+functions[__composer_resolve_cmd] )) ||
> +__composer_resolve_cmd() {
> +  local __i __ret=1
> +  local -a __cmds __tmp=( ${(@)_composer_cmds%%:*} )
> +
> +  __cmds=( $__tmp[(r)$2] )
> +  (( $#__cmds )) || __cmds=( ${(M)__tmp:#$2*} )
> +
> +  if (( $#__cmds == 1 )); then
> +    2=$__cmds[1]
> +    (( $+_composer_cmd_aliases[$2] )) && 2=$_composer_cmd_aliases[$2]
> +    __ret=0
> +  else
> +    3=$__cmds[1]
> +
> +    # An ambiguous prefix match isn't ambiguous if all the matches are 
> aliases
> +    # of each other
> +    for (( __i = 2; __i <= $#__cmds; __i++ )); do
> +      if [[ $_composer_cmd_aliases[$__cmds[__i]] == $3 ]]; then
> +        __cmds[__i]=()
> +      elif [[ $_composer_cmd_aliases[$3] == $__cmds[__i] ]]; then
> +        3=$__cmds[__i]
> +        __cmds[__i]=()
> +      fi
> +    done
> +
> +    if (( $#__cmds == 1 )); then
> +      2=$3
> +      __ret=0
> +    elif (( $#__cmds )); then
> +      _message -e ambiguous-commands "ambiguous command: $2 ($__cmds)"
> +    else
> +      # @todo Too annoying without handling custom commands
> +      : _message -e unrecognized-commands "unrecognized command: $2"
> +    fi
> +  fi
> +  : ${(P)1::=$2}
> +  return __ret
> +}
> +
> +# Remove already-used global options (this is a bit silly admittedly)
> +# $1 ... => options given (e.g. ${(k)opt_args})
> +(( $+functions[__composer_prune_global_opts] )) ||
> +__composer_prune_global_opts() {
> +  local opt
> +  local -a excls specs remove
> +
> +  for opt in $@; do
> +    specs=( ${(M)_composer_global_opts:#(*[\*\)]|)${opt}[=+-]#\[*} )
> +    excls=( ${=${(@)${(@M)specs#\([^\)]##\)}//[ \(\)]/ }} )
> +    remove+=(
> +      # Don't remove used options like *-v
> +      ${specs:#(*\)|)\*${opt}[=+-]#\[*}
> +      # But do remove them if a used option excludes them
> +      ${(M)_composer_global_opts:#(*[\*\)]|)(${(j<|>)~${(@b)excls}})[=
> +-]#\[*}
> +    )
> +  done
> +
> +  _composer_global_opts=( ${_composer_global_opts:#(${(j<|>)~$
> {(@b)remove}})} )
> +}
> +
> +# Update the working directory from opt_args/PWD. This is a little 
> irritating to
> +# deal with; for now we're just calling it anywhere it might be 
> important
> +(( $+functions[__composer_update_work_dir] )) ||
> +__composer_update_work_dir() {
> +  if [[ -n ${(v)opt_args[(i)(-d|--working-dir)]} ]]; then
> +    eval _composer_work_dir=${(v)opt_args[(i)(-d|--working-dir)]}
> +  elif [[ -z $_composer_work_dir ]]; then
> +    _composer_work_dir=$PWD
> +  fi
> +}
> +
> +# Complete local/vendored binaries
> +(( $+functions[__composer_binaries] )) ||
> +__composer_binaries() {
> +  local -a tmp
> +
> +  tmp=( ${(f)"$( __composer_call exec-list exec -l )"} )
> +  tmp=( ${(@)tmp%%[[:space:]]##} )
> +  [[ $tmp[1] == *: ]] && tmp[1]=()
> +  tmp=( ${(@)tmp##[\*-][[:space:]]#} )
> +  tmp=( ${(@)tmp%%[[:space:]]##\(local\)} )
> +
> +  (( $#tmp )) || {
> +    _message -e commands 'binary'
> +  }
> +  _wanted commands expl 'binary' compadd -a "$@" - tmp
> +}
> +
> +# Complete commands
> +(( $+functions[__composer_commands] )) ||
> +__composer_commands() {
> +  _describe -t commands command _composer_cmds
> +}
> +
> +# Complete package licences
> +(( $+functions[__composer_licenses] )) ||
> +__composer_licenses() {
> +  # These are just the ones the Composer documentation recommends; the 
> full list
> +  # of supported identifiers can be found at 
> https://spdx.org/licenses/. If
> +  # other functions need to complete licences in the future, it might 
> be wise to
> +  # break this out into a _licenses type
> +  local -a tmp=(
> +    'Apache-2.0:Apache License 2.0'
> +    'BSD-2-Clause:BSD 2-Clause "Simplified" License'
> +    'BSD-3-Clause:BSD 3-Clause "New" or "Revised" License'
> +    'BSD-4-Clause:BSD 4-Clause "Original" or "Old" License'
> +    'GPL-2.0-only:GNU General Public License v2.0 only'
> +    'GPL-2.0-or-later:GNU General Public License v2.0 or later'
> +    'GPL-3.0-only:GNU General Public License v3.0 only'
> +    'GPL-3.0-or-later:GNU General Public License v3.0 or later'
> +    'LGPL-2.1-only:GNU Lesser General Public License v2.1 only'
> +    'LGPL-2.1-or-later:GNU Lesser General Public License v2.1 or later'
> +    'LGPL-3.0-only:GNU Lesser General Public License v3.0 only'
> +    'LGPL-3.0-or-later:GNU Lesser General Public License v3.0 or later'
> +    'MIT:MIT License'
> +    'proprietary:proprietary/closed-source license'
> +  )
> +  _describe -t licenses 'package license' tmp
> +}
> +
> +# Complete packages
> +# --pairs  => complete as package:constraint pairs
> +# --vendor => complete only vendored (installed) packages
> +(( $+functions[__composer_packages] )) ||
> +__composer_packages() {
> +  local cwd
> +  local -a pairs vendor home_dirs pkgs
> +
> +  __composer_update_work_dir
> +
> +  zparseopts -D -E - -vendor=vendor -pairs=pairs
> +
> +  (( $#pairs )) && compset -P '*[:= ]' && {
> +    _message -e versions 'version constraint'
> +    return
> +  }
> +
> +  home_dirs=(
> +    $COMPOSER_HOME(#q/N)
> +    $HOME/.composer(#q/N)
> +    $HOME/.config/composer(#q/N)
> +    ${XDG_CONFIG_HOME:-/@err@}/composer(#q/N)
> +  )
> +
> +  pkgs=( $_composer_work_dir/vendor/*/*(#q/N) )
> +
> +  # Trying to work out the path to the vendor directory when we're 
> global is
> +  # tedious, so we'll just take everything we can find
> +  (( ! $#vendor || _composer_is_global )) &&
> +  pkgs+=( $^home_dirs/vendor/*/*(#q/N) )
> +
> +  # We could use `composer search` or `composer show` here to fetch all 
> of the
> +  # packages from the repositories, but Composer is SO slow to list 
> them, and
> +  # there are SO many of them, that even with array caching it's a 
> deeply
> +  # unpleasant experience trying to complete them. For now we'll just 
> do the
> +  # best we can with the local vendor/cache, JSON files, and some hard-
> coded
> +  # stuff pulled from https://packagist.org/explore/popular and
> +  # https://github.com/topics/php
> +  (( $#vendor )) || pkgs+=(
> +    ${COMPOSER_CACHE_DIR:-/@err@}/files/*/*(#q/N)
> +    $^home_dirs/cache/files/*/*(#q/N)
> +  )
> +
> +  pkgs=( ${(@M)pkgs%%[^/]##/[^/]##} )
> +
> +  (( $#vendor )) || pkgs+=(
> +    cakephp/cakephp codeigniter/framework composer/composer doctrine/
> {dbal,orm}
> +    erusev/parsedown fzaninotto/faker getgrav/grav guzzlehttp/guzzle
> +    laravel/{framework,installer,laravel}
> +    league/{climate,commonmark,csv,flysystem} michelf/php-markdown
> +    mockery/mockery monolog/monolog nesbot/carbon phpmailer/phpmailer
> +    phpunit/phpunit pimple/pimple reactphp/{promise,react}
> +    slim/{slim,slim-skeleton} squizlabs/php_codesniffer smarty/smarty
> +    swiftmailer/swiftmailer
> +    symfony/{console,finder,process,skeleton,symfony,website-skeleton}
> +    twbs/bootstrap twig/twig vlucas/phpdotenv yiisoft/{yii2,yii2-app-
> basic}
> +    ${(f)"$(
> +      _call_program packages-json \
> +        command grep -soE ${(qq):-'"[^/]+\\?/[^/]+"\s*:'} -- \
> +        ${(qq)_composer_work_dir}/composer.json
> +    )"//[$':" \t\\']/}
> +    ${(@)${(f)"$(
> +      _call_program packages-lock \
> +        command grep -soE ${(qq):-'"name"\s*:\s*"[^/]+\\?/[^/]+"'} -- \
> +        ${(qq)_composer_work_dir}/composer.lock
> +    )"//\"name\"/}//[$':" \t\\']/}
> +  )
> +
> +  if [[ $PREFIX == */* ]]; then
> +    _description packages expl "${PREFIX%%/*}/* package"
> +  else
> +    _description packages expl 'package vendor'
> +  fi
> +  _multi_parts "$@" "${(@)expl}" / pkgs
> +}
> +
> +# Complete package repositories
> +(( $+functions[__composer_repositories] )) ||
> +__composer_repositories() {
> +  _alternative \
> +    'urls:repository URL:_urls' \
> +    'files:repository JSON configuration file:_files -g "*.json(#q-.)"' 
> \
> +    'json:repository JSON configuration object:'
> +}
> +
> +# Complete composer.json scripts
> +(( $+functions[__composer_scripts] )) ||
> +__composer_scripts() {
> +  local -a tmp
> +
> +  tmp=( ${(f)"$( __composer_call run-script-list run-script -l )"} )
> +  tmp=( ${(@)tmp##[[:space:]]##} )
> +  tmp=( ${(@)tmp%%[[:space:]]##} )
> +  [[ $tmp[1] == *: ]] && tmp[1]=()
> +  tmp=( ${(@)tmp##[\*-][[:space:]]#} )
> +  tmp=( ${(@)tmp%%[[:space:]]*} )
> +
> +  (( $#tmp )) || {
> +    _message -e commands 'script'
> +  }
> +  _wanted commands expl 'script' compadd -a "$@" - tmp
> +}
> +
> +# Complete package stabilities
> +(( $+functions[__composer_stabilities] )) ||
> +__composer_stabilities() {
> +  _wanted stabilities expl 'package stability' compadd "$@" - \
> +    stable RC beta alpha dev
> +}
> +
> +# Complete package types
> +(( $+functions[__composer_types] )) ||
> +__composer_types() {
> +  # Only the first four here are official types listed in the 
> documentation; the
> +  # others are popular custom types
> +  _wanted types expl 'package type' compadd "$@" - \
> +    composer-plugin library metapackage project \
> +    cakephp-plugin cantao-module drupal-module magento2-module package 
> \
> +    phpcodesniffer-standard silverstripe-module symfony-bundle \
> +    typo3-cms-extension wordpress-plugin yii2-extension
> +}
> +
> +(( $+functions[_composer_archive] )) ||
> +_composer_archive() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--dir=[specify output directory]:output directory:_files -/' \
> +    '--file=[specify output file name]:output file name (without 
> extension):_files' \
> +    '(-f --format)'{-f+,--format=}'[specify archive format]:archive 
> format:(tar zip)' \
> +    '1:: :__composer_packages' \
> +    '2:: :_guard "^-*" "version constraint"'
> +}
> +
> +(( $+functions[_composer_check-platform-reqs] )) ||
> +_composer_check-platform-reqs() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--no-dev[do not check require-dev package requirements]'
> +}
> +
> +(( $+functions[_composer_config] )) ||
> +_composer_config() {
> +  local ret=1
> +  local -a context expl line state state_descr cmd tmp
> +  local -A opt_args
> +
> +  # -a and -f can be used together, in which case auth.json will be 
> looked up in
> +  # the base directory of the -f file. -f and -g can't be used 
> together, but -f
> +  # can still be used to specify config.json with `composer global 
> config`
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    + '(a)' '(A l u : *)'{-a,--auth}'[edit auth.json (with -e)]' \
> +    + '(A)' '(a e u)--absolute[display absolute *-dir setting paths]' \
> +    + '(e)' '(A l u : *)'{-e,--editor}'[open configuration in $EDITOR]' 
> \
> +    + '(f)' '(g)'{-f+,--file=}'[specify {composer,config}.json 
> path]:configuration file:_files' \
> +    + '(g)' {-g,--global}'[use global config.json]' \
> +    + '(l)' '(a e u : *)'{-l,--list}'[list configuration settings]' \
> +    + '(u)' '(a A e l *)--unset[unset specified setting key]' \
> +    + k '(a e l)1: :->key' \
> +    + v '(a e l u)*:: :->val' \
> +  && ret=0
> +  __composer_update_work_dir
> +
> +  case $state in
> +    key)
> +      # `composer config` doesn't seem to actually respect -d...
> +      tmp=( ${(v)opt_args[(i)([^-]##-|)(-f|--file)]} )
> +      cmd=( config -f$^tmp $opt_args[(i)([^-]##-|)(-g|--global)] -l )
> +
> +      tmp=( ${(@M)${(f)"$( __composer_call config-list $cmd )"}#\[*
> \]} )
> +      tmp=( ${(@)tmp//[ \]\[]/} )
> +
> +      _wanted setting-keys expl 'setting key' compadd -a "$@" - tmp && 
> ret=0
> +      ;;
> +    val)
> +      case $words[1] in
> +        *[.-]dirs#|home)
> +          _wanted setting-values expl 'setting value' _files -/ "$@" && 
> ret=0
> +          ;;
> +        *[.-]domains#)
> +          _wanted setting-values expl 'setting value' _hosts "$@" && 
> ret=0
> +          ;;
> +        *[.-]urls#)
> +          _wanted setting-values expl 'setting value' _urls "$@" && 
> ret=0
> +          ;;
> +        *)
> +          # If we wanted we could get specific about booleans, etc., 
> here
> +          _wanted setting-values expl 'setting value' _default "$@" && 
> ret=0
> +          ;;
> +      esac
> +      ;;
> +  esac
> +
> +  return ret
> +}
> +
> +(( $+functions[_composer_create-project] )) ||
> +_composer_create-project() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(--no-dev)--dev[install require-dev packages]' \
> +    '--ignore-platform-reqs[ignore PHP platform requirements]' \
> +    '(--remove-vcs)--keep-vcs[do not remove VCS directory]' \
> +    '!(--no-plugins)--no-custom-installers' \
> +    '(--dev)--no-dev[do not install require-dev packages]' \
> +    '--no-install[skip installation of package dependencies]' \
> +    '--no-progress[do not display download progress]' \
> +    '--no-secure-http[do not use HTTPS]' \
> +    '--no-scripts[prevent execution of scripts defined in root 
> package]' \
> +    '(--prefer-source)--prefer-dist[prefer installation from dist]' \
> +    '(--prefer-dist)--prefer-source[prefer installation from source]' \
> +    '(--keep-vcs)--remove-vcs[force removal of VCS directory]' \
> +    '--repository=[specify package 
> repository]: :__composer_repositories' \
> +    '!(--repository)--repository_url:repository URL:_urls' \
> +    '(-s --stability)'{-s+,--stability=}'[specify minimum 
> stability]: :__composer_stabilities' \
> +    '1: :__composer_packages' \
> +    '2::project directory:_files -/' \
> +    '3:: :_guard "^-*" "version constraint"'
> +}
> +
> +(( $+functions[_composer_depends] )) ||
> +_composer_depends() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(-r --recursive)'{-r,--recursive}'[resolve recursively up to root 
> package]' \
> +    '(-t --tree)'{-t,--tree}'[display in tree format]' \
> +    '1: :__composer_packages --vendor' \
> +    '2:: :_guard "^-*" "version constraint"'
> +}
> +
> +(( $+functions[_composer_dump-autoload] )) ||
> +_composer_dump-autoload() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--apcu[use APCu to cache found/not-found classes]' \
> +    '--no-dev[ignore autoload-dev rules]' \
> +    '--no-scripts[prevent execution of scripts defined in 
> composer.json]' \
> +    + '(a)' '(o)'{-a,--classmap-authoritative}'[auto-load from class 
> maps only (implies -o)]' \
> +    + '(o)' {-o,--optimize}'[use class maps for PSR-0/4 packages]'
> +}
> +
> +(( $+functions[_composer_exec] )) ||
> +_composer_exec() {
> +  local ret=1
> +  local -a context line state state_descr
> +  local -A opt_args
> +
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(: * -l --list)'{-l,--list}'[display available binaries]' \
> +    '1: :__composer_binaries' \
> +    '*: :->next' \
> +  && ret=0
> +
> +  # Can't use *:: here, it won't complete subsequent options
> +  [[ $state == next ]] && {
> +    shift words
> +    (( CURRENT-- ))
> +    unset _composer_cmd
> +    _normal && ret=0
> +  }
> +
> +  return ret
> +}
> +
> +(( $+functions[_composer_global] )) ||
> +_composer_global() {
> +  _composer_is_global=1
> +  _composer "$@"
> +}
> +
> +(( $+functions[_composer_help] )) ||
> +_composer_help() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--format=[specify output format]:output format [txt]:(json md txt 
> xml)' \
> +    '--raw[output raw help (with text format)]' \
> +    '1: :__composer_commands'
> +}
> +
> +(( $+functions[_composer_home] )) ||
> +_composer_home() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(-H --homepage)'{-H,--homepage}'[use home page instead of 
> repository]' \
> +    '(-s --show)'{-s,--show}'[display URL only (do not open)]' \
> +    '*: :__composer_packages' \
> +}
> +
> +(( $+functions[_composer_init] )) ||
> +_composer_init() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--author=[specify package author]:package author' \
> +    '--description=[specify package description]:package description' \
> +    '--homepage=[specify package home page]:package home page:_urls' \
> +    '(-l --license)'{-l+,--license=}'[specify package 
> license]: :__composer_licenses' \
> +    '--name=[specify package name]: :__composer_packages' \
> +    '*--repository=[specify custom package 
> repository]: :__composer_repositories' \
> +    '*--require=[specify package to require]: :__composer_packages --
> pairs' \
> +    '*--require-dev=[specify package to require for 
> development]: :__composer_packages --pairs' \
> +    '(-s --stability)'{-s+,--stability=}'[specify minimum 
> stability]: :__composer_stabilities' \
> +    '--type=-[specify package type]:: :__composer_types'
> +}
> +
> +(( $+functions[_composer_install] )) ||
> +_composer_install() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(--no-dev)--dev[install require-dev packages]' \
> +    '--dry-run[do not actually install (implies -v)]' \
> +    '--ignore-platform-reqs[ignore PHP platform requirements]' \
> +    '!(--no-plugins)--no-custom-installers' \
> +    '(--dev)--no-dev[do not install require-dev packages]' \
> +    '--no-progress[do not display download progress]' \
> +    '--no-scripts[prevent execution of scripts defined in 
> composer.json]' \
> +    '--no-suggest[do not display package suggestions]' \
> +    '(--prefer-source)--prefer-dist[prefer installation from dist]' \
> +    '(--prefer-dist)--prefer-source[prefer installation from source]' \
> +    + '(a)' '(n o)'{-a,--classmap-authoritative}'[auto-load from class 
> maps only (implies -o)]' \
> +    + '(A)' '(n)--apcu-autoloader[use APCu to cache found/not-found 
> classes]' \
> +    + '(n)' '(a A o)--no-autoload[skip auto-loader generation]' \
> +    + '(o)' '(n)'{-o,--optimize}'[use class maps for PSR-0/4 packages]'
> +}
> +
> +(( $+functions[_composer_licenses] )) ||
> +_composer_licenses() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--no-dev[ignore require-dev packages]' \
> +    '--format=[specify output format]:output format [text]:(json text)'
> +}
> +
> +(( $+functions[_composer_list] )) ||
> +_composer_list() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--format=[specify output format]:output format [txt]:(json md txt 
> xml)' \
> +    '--raw[output raw help (with text format)]' \
> +    '1: :_guard "^-*" namespace'
> +}
> +
> +(( $+functions[_composer_outdated] )) ||
> +_composer_outdated() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--format=[specify output format]:output format [text]:(json text)' 
> \
> +    '--strict[return non-zero exit code if there are outdated 
> packages]' \
> +    '1: :__composer_packages --vendor' \
> +    + '(a)' '(D I)'{-a,--all}'[display all installed packages]' \
> +    + '(D)' '(a)'{-D,--direct}'[display only packages directly required 
> by root package]' \
> +    + '(I)' '(a)*--ignore=[ignore specified package (with -
> o)]: :__composer_packages' \
> +    + '(m)' '(a)'{-m,--minor-only}'[display only packages with minor 
> semver updates (with -o)]' \
> +    + '(o)' '!(a)'{-o,--outdated}
> +}
> +
> +(( $+functions[_composer_prohibits] )) ||
> +_composer_prohibits() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(-r --recursive)'{-r,--recursive}'[resolve recursively up to root 
> package]' \
> +    '(-t --tree)'{-t,--tree}'[display in tree format]' \
> +    '1: :__composer_packages --vendor' \
> +    '2:: :_guard "^-*" "version constraint"'
> +}
> +
> +(( $+functions[_composer_remove] )) ||
> +_composer_remove() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--dev[remove package from require-dev]' \
> +    '--ignore-platform-reqs[ignore PHP platform requirements]' \
> +    '(--dev)--no-dev[do not install require-dev packages]' \
> +    '--no-progress[do not display download progress]' \
> +    '--no-scripts[prevent execution of scripts defined in 
> composer.json]' \
> +    '(--update-no-dev)--no-update[do not update dependencies]' \
> +    '(--update-with-dependencies)--no-update-with-dependencies[do not 
> update inherited dependencies]' \
> +    '(--no-update)--update-no-dev[update dependencies with --no-dev 
> option]' \
> +    '(--no-update-with-dependencies)--update-with-dependencies[update 
> inherited dependencies]' \
> +    '*: :__composer_packages --vendor' \
> +    + '(a)' '(n o)'{-a,--classmap-authoritative}'[auto-load from class 
> maps only (implies -o)]' \
> +    + '(A)' '(n)--apcu-autoloader[use APCu to cache found/not-found 
> classes]' \
> +    + '(n)' '(a A o)--no-autoload[skip auto-loader generation]' \
> +    + '(o)' '(n)'{-o,--optimize}'[use class maps for PSR-0/4 packages]'
> +}
> +
> +(( $+functions[_composer_require] )) ||
> +_composer_require() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--dev[add package to require-dev]' \
> +    '--ignore-platform-reqs[ignore PHP platform requirements]' \
> +    '--no-progress[do not display download progress]' \
> +    '--no-scripts[prevent execution of scripts defined in 
> composer.json]' \
> +    '--no-suggest[do not display package suggestions]' \
> +    '(--prefer-source)--prefer-dist[prefer installation from dist]' \
> +    '--prefer-lowest[prefer lowest versions of dependencies]' \
> +    '(--prefer-dist)--prefer-source[prefer installation from source]' \
> +    '--prefer-stable[prefer stable versions of dependencies]' \
> +    '--sort-packages[sort packages when adding/updating dependencies]' 
> \
> +    '(--no-update)--update-no-dev[update dependencies with --no-dev 
> option]' \
> +    '*: :__composer_packages --pairs' \
> +    + '(a)' '(n o)'{-a,--classmap-authoritative}'[auto-load from class 
> maps only (implies -o)]' \
> +    + '(A)' '(n)--apcu-autoloader[use APCu to cache found/not-found 
> classes]' \
> +    + '(n)' '(a A o)--no-autoload[skip auto-loader generation]' \
> +    + '(o)' '(n)'{-o,--optimize}'[use class maps for PSR-0/4 packages]' 
> \
> +    + '(u)' \
> +    '(--update-no-dev)--no-update[do not update dependencies]' \
> +    '--update-with-dependencies[update inherited dependencies, except 
> root requirements]' \
> +    '--update-with-all-dependencies[update all inherited dependencies]'
> +}
> +
> +(( $+functions[_composer_run-script] )) ||
> +_composer_run-script() {
> +  local ret=1
> +  local -a context line state state_descr
> +  local -A opt_args
> +
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(--no-dev)--dev[enable dev mode]' \
> +    '(: * -l --list)'{-l,--list}'[display available scripts]' \
> +    '(--dev)--no-dev[disable dev mode]' \
> +    '--timeout=[specify script time-out]:time-out (seconds)' \
> +    '1: :__composer_scripts' \
> +    '*: :->next' \
> +  && ret=0
> +
> +  # Can't use *:: here, it won't complete subsequent options
> +  [[ $state == next ]] && {
> +    shift words
> +    (( CURRENT-- ))
> +    unset _composer_cmd
> +    _normal && ret=0
> +  }
> +
> +  return ret
> +}
> +
> +(( $+functions[_composer_search] )) ||
> +_composer_search() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(-N --only-name)'{-N,--only-name}'[search package names only]' \
> +    '(-t --type)'{-t+,--type=}'[search for specified package 
> type]: :__composer_types' \
> +    '*: :__composer_packages'
> +}
> +
> +(( $+functions[_composer_self-update] )) ||
> +_composer_self-update() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    + '(c)' \
> +    '--preview[force update to preview channel]' \
> +    '--snapshot[force update to snapshot channel]' \
> +    '--stable[force update to stable channel]' \
> +    + '(C)' '(u)--set-channel-only[set channel as default and exit]' \
> +    + u \
> +    '(C -r --rollback)--clean-backups[delete old back-ups during 
> update]' \
> +    '(C)--no-progress[do not display download progress]' \
> +    '(c C -r --rollback)'{-r,--rollback}'[roll back to earlier 
> installation]' \
> +    '(C)--update-keys[prompt for key update]' \
> +    '(C)1: :_guard "^-*" "Composer version"'
> +}
> +
> +(( $+functions[_composer_show] )) ||
> +_composer_show() {
> +  local ret=1
> +  local -a context line state state_descr
> +  local -A opt_args
> +
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '--format=[specify output format]:output format [text]:(json text)' 
> \
> +    '--strict[return non-zero exit code if there are outdated 
> packages]' \
> +    '1: :->pkgs' \
> +    '2:: :_guard "^-*" "version constraint"' \
> +    + '(a)' '(D I s t)'{-a,--available}'[display only available 
> packages]' \
> +    + '(A)' '(D I s t)--all[display all packages]' \
> +    + '(D)' '(a A p s)'{-D,--direct}'[display only packages directly 
> required by root package]' \
> +    + '(i)' '(s)'{-i,--installed}'[display only installed packages]' \
> +    + '(I)' '(a A s t)*--ignore=[ignore specified package (with -
> o)]: :__composer_packages' \
> +    + '(l)' '(s t)'{-l,--latest}'[display only latest version of 
> installed packages]' \
> +    + '(m)' '(a A s t)'{-m,--minor-only}'[display only packages with 
> minor semver updates (with -o)]' \
> +    + '(N)' '(P)'{-N,--name-only}'[display package names only]' \
> +    + '(o)' '(l t s)'{-o,--outdated}'[like -l, but display only 
> outdated packages]' \
> +    + '(p)' '(D)'{-p,--platform}'[display only PHP platform packages]' 
> \
> +    + '(P)' '(a A N)'{-P,--path}'[display package file paths]' \
> +    + '(s)' '(a A I l o t)'{-s,--self}'[display root package 
> information]' \
> +    + '(t)' '(a A I l o s)'{-t,--tree}'[display in tree format]' \
> +  && ret=0
> +
> +  [[ $state == pkgs ]] &&
> +  if [[ -n $opt_args[(i)[aA]-*] ]]; then
> +    __composer_packages && ret=0
> +  else
> +    __composer_packages --vendor && ret=0
> +  fi
> +
> +  return ret
> +}
> +
> +(( $+functions[_composer_suggests] )) ||
> +_composer_suggests() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(--by-suggestion)--by-package[group results by suggesting 
> package]' \
> +    '(--by-package)--by-suggestion[group results by suggested package]' 
> \
> +    '--no-dev[exclude suggestions from require-dev packages]' \
> +    '*: :__composer_packages --vendor'
> +}
> +
> +(( $+functions[_composer_update] )) ||
> +_composer_update() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(--no-dev)--dev[install require-dev packages]' \
> +    '--dry-run[do not actually update (implies -v)]' \
> +    '(-i -n --interactive --no-interaction)'{-i,--interactive}'[update 
> with interactive interface]' \
> +    '--ignore-platform-reqs[ignore PHP platform requirements]' \
> +    '--lock[update composer.lock hash only]' \
> +    '!(--no-plugins)--no-custom-installers' \
> +    '(--dev)--no-dev[do not install require-dev packages]' \
> +    '--no-progress[do not display download progress]' \
> +    '--no-scripts[prevent execution of scripts defined in 
> composer.json]' \
> +    '--no-suggest[do not display package suggestions]' \
> +    '(--prefer-source)--prefer-dist[prefer installation from dist]' \
> +    '--prefer-lowest[prefer lowest versions of dependencies]' \
> +    '(--prefer-dist)--prefer-source[prefer installation from source]' \
> +    '--prefer-stable[prefer stable versions of dependencies]' \
> +    '--root-reqs[update only root-package dependencies]' \
> +    '*:: :__composer_packages --vendor' \
> +    + '(a)' '(n o)'{-a,--classmap-authoritative}'[auto-load from class 
> maps only (implies -o)]' \
> +    + '(A)' '(n)--apcu-autoloader[use APCu to cache found/not-found 
> classes]' \
> +    + '(n)' '(a A o)--no-autoload[skip auto-loader generation]' \
> +    + '(o)' '(n)'{-o,--optimize}'[use class maps for PSR-0/4 packages]' 
> \
> +    + '(u)' \
> +    '--with-dependencies[update dependencies of whitelisted packages, 
> except root requirements]' \
> +    '--with-all-dependencies[update all dependencies of whitelisted 
> packages]'
> +}
> +
> +(( $+functions[_composer_validate] )) ||
> +_composer_validate() {
> +  _arguments -s -S : \
> +    $_composer_global_opts \
> +    '(-A --with-dependencies)'{-A,--with-dependencies}'[validate 
> composer.json of installed dependencies]' \
> +    '--no-check-all[do not validate completely]' \
> +    '--no-check-lock[ignore out-of-date composer.lock]' \
> +    '--no-check-publish[ignore publish errors]' \
> +    '--strict[return non-zero exit code for warnings as well as 
> errors]' \
> +    '1::composer.json file:_files -g "*.json(#q-.)"'
> +}
> +
> +_composer() {
> +  local ret=1 helps cmd
> +  local -a context line state state_descr
> +  local -A opt_args
> +
> +  # These are meant for use by helper functions; we check for set-ness 
> first in
> +  # case of `composer global`
> +  (( $+_composer_cmd )) || {
> +    local _composer_cmd=$words[1] _composer_is_global=0 
> _composer_work_dir=
> +    local -a _composer_cmds _composer_global_opts
> +    local -A _composer_cmd_aliases
> +
> +    # alias -> canonical (mappings derived from source)
> +    _composer_cmd_aliases=(
> +      browse       home
> +      clearcache   clear-cache
> +      dumpautoload dump-autoload
> +      i            install
> +      info         show
> +      selfupdate   self-update
> +      u            update
> +      upgrade      update
> +      why          depends
> +      why-not      prohibits
> +    )
> +    # Official commands (see note at top about custom ones)
> +    _composer_cmds=(
> +      about:'display short information about Composer'
> +      archive:'create archive of project/package'
> +      check-platform-reqs:'check that platform requirements are 
> satisfied'
> +      clear{-,}cache:'clear internal package cache'
> +      config:'set configuration options'
> +      create-project:'create new project from package'
> +      {depends,why}:'display packages depending on package'
> +      diagnose:'diagnose system problems'
> +      dump{-,}autoload:'dump class auto-loader'
> +      exec:'execute vendored binary/script'
> +      global:'run command in global Composer directory'
> +      help:'display help information'
> +      {home,browse}:'open package home page or repository in browser'
> +      init:'create basic composer.json'
> +      {install,i}:'install packages in composer.{lock,json}'
> +      licenses:'display dependency license information'
> +      list:'display supported commands'
> +      outdated:'display outdated packages'
> +      {prohibits,why-not}:'display packages preventing package from 
> being installed'
> +      remove:'remove and uninstall required package'
> +      require:'add and install required package'
> +      run-script:'run scripts in composer.json'
> +      search:'search packages'
> +      self{-,}update:'upgrade Composer'
> +      {show,info}:'display package information'
> +      status:'display locally modified packages'
> +      suggests:'display package suggestions'
> +      {update,u,upgrade}:'upgrade packages in composer.json and update 
> composer.lock'
> +      validate:'validate composer.{json,lock}'
> +    )
> +    # Global options (can be used both before and after a command)
> +    _composer_global_opts=(
> +      '(-h --help)'{-h,--help}'[display help information]'
> +      '(: * -)'{-V,--version}'[display version information]'
> +
> +      # Symfony handles -vv and -vvv specially
> +      '(-q -v --quiet --verbose)'{-q,--quiet}'[reduce output 
> verbosity]'
> +      '(-q --quiet --verbose)*-v[increase output verbosity]'
> +      '(-q --quiet --verbose)--verbose[increase output verbosity]'
> +
> +      '(--no-ansi)--ansi[force ANSI (color) output]'
> +      '(--ansi)--no-ansi[disable ANSI (color) output]'
> +
> +      '(-n --no-interaction)'{-n,--no-interaction}'[run non-
> interactively]'
> +
> +      '--no-plugins[disable plug-ins]'
> +      '--profile[display timing and memory usage information]'
> +      '(-d --working-dir)'{-d+,--working-dir=}'[specify working 
> directory]:working directory:_files -/'
> +    )
> +  }
> +
> +  # Symfony's Application class naively intercepts --version and --help 
> no
> +  # matter where they appear on the command line. --version is handled
> +  # sufficiently by the global option spec above; for --help, we need 
> to
> +  # simulate the help command
> +  [[ -n $words[(r)(-h|--help)] ]] && {
> +    helps=${#${(M)words[2,CURRENT]:#(-h|--help)}}
> +    words=( "$words[1]" help "${(@)words[2,CURRENT]:#(-h|--help)}" )
> +    (( CURRENT -= helps - 1 ))
> +    __composer_prune_global_opts -h --help
> +  }
> +
> +  _arguments -s -S -A '-*' : \
> +    $_composer_global_opts \
> +    '1: :__composer_commands' \
> +    '*:: :->next' \
> +  && ret=0
> +  __composer_update_work_dir
> +
> +  [[ $state == next ]] && {
> +    # Resolve abbreviated/aliased command names and ensure that 
> $words[1] works
> +    # as expected in our helper functions
> +    __composer_resolve_cmd cmd $words[1]
> +    words[1]=$_composer_cmd
> +
> +    # Don't offer global options again after they've been given
> +    __composer_prune_global_opts ${(k)opt_args}
> +    # This is intentionally done twice
> +    [[ $cmd == help ]] && __composer_prune_global_opts -h --help
> +
> +    if (( $+functions[_composer_$cmd] )); then
> +      _composer_$cmd "$@" && ret=0
> +    else
> +      _arguments -s -S : $_composer_global_opts && ret=0
> +    fi
> +  }
> +
> +  return ret
> +}
> +
> +_composer "$@"
> 



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