342 lines
10 KiB
Plaintext
342 lines
10 KiB
Plaintext
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#compdef bazel
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# Copyright 2015 The Bazel Authors. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Installation
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# ------------
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#
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# 1. Add this script to a directory on your $fpath:
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# fpath[1,0]=~/.zsh/completion/
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# mkdir -p ~/.zsh/completion/
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# cp scripts/zsh_completion/_bazel ~/.zsh/completion
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#
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# 2. Optionally, add the following to your .zshrc.
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# zstyle ':completion:*' use-cache on
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# zstyle ':completion:*' cache-path ~/.zsh/cache
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#
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# This way, the completion script does not have to parse Bazel's options
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# repeatedly. The directory in cache-path must be created manually.
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#
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# 3. Restart the shell
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#
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# Options
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# -------
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# completion:init:bazel:* cache-lifetime
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# Lifetime for the completion cache (if turned on, default: 1 week)
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local curcontext="$curcontext" state line
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: ${BAZEL_COMPLETION_PACKAGE_PATH:=%workspace%}
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: ${BAZEL:=bazel}
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_bazel_b() { ${BAZEL} --noblock_for_lock "$@" 2>/dev/null; }
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# Default cache lifetime is 1 week
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zstyle -s ":completion:${curcontext}:" cache-lifetime lifetime
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if [[ -z "${lifetime}" ]]; then
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lifetime=$((60*60*24*7))
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fi
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_bazel_cache_policy() {
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local -a oldp
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oldp=( "$1"(Nms+${lifetime}) )
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(( $#oldp ))
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}
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_set_cache_policy() {
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zstyle -s ":completion:*:$curcontext*" cache-policy update_policy
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if [[ -z "$update_policy" ]]; then
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zstyle ":completion:$curcontext*" cache-policy _bazel_cache_policy
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fi
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}
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# Skips over all global arguments. After invocation, OFFSET contains the
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# position of the bazel command in $words.
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_adapt_subcommand_offset() {
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OFFSET=2
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for w in ${words[2,-1]}; do
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if [[ $w == (#b)-* ]]; then
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(( OFFSET++ ))
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else
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return
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fi
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done
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}
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# Retrieve the cache but also check that the value is not empty.
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_bazel_safe_retrieve_cache() {
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_retrieve_cache $1 && [[ ${(P)#2} -gt 0 ]]
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}
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# Puts the name of the variable that contains the options for the bazel
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# subcommand handed in as the first argument into the global variable
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# _bazel_cmd_options.
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_bazel_get_options() {
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local lcmd=$1
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_bazel_cmd_options=_bazel_${lcmd}_options
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_bazel_cmd_args=_bazel_${lcmd}_args
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if [[ ${(P)#_bazel_cmd_options} != 0 ]]; then
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return
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fi
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if _cache_invalid BAZEL_${lcmd}_options || _cache_invalid BAZEL_${lcmd}_args \
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|| ! _bazel_safe_retrieve_cache BAZEL_${lcmd}_options ${_bazel_cmd_options} \
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|| ! _retrieve_cache BAZEL_${lcmd}_args ${_bazel_cmd_args}; then
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if ! eval "$(_bazel_b help completion)"; then
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return
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fi
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local opts_var
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if [[ $lcmd == "startup_options" ]]; then
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opts_var="BAZEL_STARTUP_OPTIONS"
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else
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opts_var="BAZEL_COMMAND_${lcmd:u}_FLAGS"
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fi
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local -a raw_options
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if ! eval "raw_options=(\${(@f)$opts_var})"; then
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return
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fi
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local -a option_list
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for opt in $raw_options; do
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case $opt in
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--*"={"*)
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local lst="${${opt##*"={"}%"}"}"
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local opt="${opt%%=*}="
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option_list+=("${opt}:string:_values '' ${lst//,/ }") ;;
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--*=path)
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option_list+=("${opt%path}:path:_files") ;;
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--*=label)
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option_list+=("${opt%label}:target:_bazel_complete_target") ;;
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--*=*)
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option_list+=("${opt}:string:") ;;
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*)
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option_list+=("$opt") ;;
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esac
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done
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local -a cmd_args
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local cmd_type
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if eval "cmd_type=\${BAZEL_COMMAND_${lcmd:u}_ARGUMENT}" && [[ -n $cmd_type ]]; then
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case $cmd_type in
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label|label-*)
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cmd_args+=("*::${cmd_type}:_bazel_complete_target_${cmd_type//-/_}") ;;
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info-key)
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cmd_args+=('1::key:_bazel_info_key') ;;
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path)
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cmd_args+=('1::profile:_path_files') ;;
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"command|{"*"}")
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local lst=${${cmd_type#"command|{"}%"}"}
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cmd_args+=("1::topic:_bazel_help_topic -- ${lst//,/ }") ;;
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esac
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fi
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typeset -g "${_bazel_cmd_options}"="${(pj:|:)option_list[*]}"
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_store_cache BAZEL_${lcmd}_options ${_bazel_cmd_options}
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typeset -g "${_bazel_cmd_args}"="${(pj:|:)cmd_args[*]}"
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_store_cache BAZEL_${lcmd}_args ${_bazel_cmd_args}
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fi
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}
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_get_build_targets() {
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local pkg=$1
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local rule_re
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typeset -a completions
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case $target_type in
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test)
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rule_re=".*_test"
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;;
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build)
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rule_re=".*"
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;;
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bin)
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rule_re=".*_test|.*_binary"
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;;
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esac
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completions=(${$(_bazel_b query "kind(\"${rule_re}\", ${pkg}:all)" 2>/dev/null)##*:})
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if ( (( ${#completions} > 0 )) && [[ $target_type != run ]] ); then
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completions+=(all)
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fi
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echo ${completions[*]}
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}
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# Returns all packages that match $PREFIX. PREFIX may start with //, in which
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# case the workspace roots are searched. Otherwise, they are completed based on
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# PWD.
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_get_build_packages() {
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local workspace pfx
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typeset -a package_roots paths final_paths
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workspace=$PWD
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package_roots=(${(ps.:.)BAZEL_COMPLETION_PACKAGE_PATH})
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package_roots=(${^package_roots//\%workspace\%/$workspace})
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if [[ "${(e)PREFIX}" == //* ]]; then
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pfx=${(e)PREFIX[2,-1]}
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else
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pfx=${(e)PREFIX}
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fi
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paths=(${^package_roots}/${pfx}*(/))
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for p in ${paths[*]}; do
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if [[ -f ${p}/BUILD || -f ${p}/BUILD.bazel ]]; then
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final_paths+=(${p##*/}:)
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fi
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final_paths+=(${p##*/}/)
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done
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echo ${final_paths[*]}
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}
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_package_remove_slash() {
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if [[ $KEYS == ':' && $LBUFFER == */ ]]; then
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LBUFFER=${LBUFFER[1,-2]}
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fi
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}
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# Completion function for BUILD targets, called by the completion system.
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_bazel_complete_target() {
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local expl
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typeset -a packages targets
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if [[ "${(e)PREFIX}" != *:* ]]; then
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# There is no : in the prefix, completion can be either
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# a package or a target, if the cwd is a package itself.
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if [[ -f $PWD/BUILD || -f $PWD/BUILD.bazel ]]; then
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targets=($(_get_build_targets ""))
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_description build_target expl "BUILD target"
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compadd "${expl[@]}" -a targets
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fi
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packages=($(_get_build_packages))
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_description build_package expl "BUILD package"
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# Chop of the leading path segments from the prefix for display.
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compset -P '*/'
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compadd -R _package_remove_slash -S '' "${expl[@]}" -a packages
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else
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targets=($(_get_build_targets "${${(e)PREFIX}%:*}"))
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_description build_target expl "BUILD target"
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# Ignore the current prefix for the upcoming completion, since we only list
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# the names of the targets, not the full path.
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compset -P '*:'
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compadd "${expl[@]}" -a targets
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fi
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}
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_bazel_complete_target_label() {
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typeset -g target_type=build
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_bazel_complete_target
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}
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_bazel_complete_target_label_test() {
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typeset -g target_type=test
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_bazel_complete_target
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}
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_bazel_complete_target_label_bin() {
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typeset -g target_type=bin
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_bazel_complete_target
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}
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### Actual completion commands
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_bazel() {
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_adapt_subcommand_offset
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if (( CURRENT - OFFSET > 0 )); then
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# Remember the subcommand name, stored globally so we can access it
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# from any subsequent function
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cmd=${words[OFFSET]//-/_}
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# Set the context for the subcommand.
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curcontext="${curcontext%:*:*}:bazel-$cmd:"
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_set_cache_policy
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# Narrow the range of words we are looking at to exclude cmd
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# name and any leading options
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(( CURRENT = CURRENT - OFFSET + 1 ))
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shift $((OFFSET - 1)) words
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# Run the completion for the subcommand
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_bazel_get_options $cmd
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_arguments : \
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${(Pps:|:)_bazel_cmd_options} \
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${(Pps:|:)_bazel_cmd_args}
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else
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_set_cache_policy
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# Start special handling for global options,
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# which can be retrieved by calling
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# $ bazel help startup_options
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_bazel_get_options startup_options
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_arguments : \
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${(Pps:|:)_bazel_cmd_options} \
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"*:commands:_bazel_commands"
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fi
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return
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}
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_get_commands() {
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# bazel_cmd_list is a global (g) array (a)
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typeset -ga _bazel_cmd_list
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# Use `bazel help` instead of `bazel help completion` to get command
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# descriptions.
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if _bazel_cmd_list=("${(@f)$(_bazel_b help | awk '
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/Available commands/ { command=1; }
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/ [-a-z]+[ \t]+.+/ { if (command) { printf "%s:", $1; for (i=2; i<=NF; i++) printf "%s ", $i; print "" } }
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/^$/ { command=0; }')}"); then
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_store_cache BAZEL_commands _bazel_cmd_list
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fi
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}
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# Completion function for bazel subcommands, called by the completion system.
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_bazel_commands() {
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if [[ ${#_bazel_cmd_list} == 0 ]]; then
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if _cache_invalid BAZEL_commands \
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|| ! _bazel_safe_retrieve_cache BAZEL_commands _bazel_cmd_list; then
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_get_commands
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fi
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fi
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_describe -t bazel-commands 'Bazel command' _bazel_cmd_list
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}
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# Completion function for bazel help options, called by the completion system.
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_bazel_help_topic() {
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if [[ ${#_bazel_cmd_list} == 0 ]]; then
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if _cache_invalid BAZEL_commands \
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|| ! _bazel_safe_retrieve_cache BAZEL_commands _bazel_cmd_list; then
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_get_commands
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fi
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fi
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while [[ $# -gt 0 ]]; do
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if [[ $1 == -- ]]; then
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shift
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break
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fi
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shift
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done
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_bazel_help_list=($@)
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_bazel_help_list+=($_bazel_cmd_list)
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_describe -t bazel-help 'Help topic' _bazel_help_list
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}
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# Completion function for bazel info keys, called by the completion system.
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_bazel_info_key() {
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if [[ ${#_bazel_info_keys_list} == 0 ]]; then
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if _cache_invalid BAZEL_info_keys \
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|| ! _bazel_safe_retrieve_cache BAZEL_info_keys _bazel_info_keys_list; then
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typeset -ga _bazel_info_keys_list
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# Use `bazel help` instead of `bazel help completion` to get info-key
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# descriptions.
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if _bazel_info_keys_list=("${(@f)$(_bazel_b help info-keys | awk '
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{ printf "%s:", $1; for (i=2; i<=NF; i++) printf "%s ", $i; print "" }')}"); then
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_store_cache BAZEL_info_keys _bazel_info_keys_list
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fi
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fi
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fi
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_describe -t bazel-info 'Key' _bazel_info_keys_list
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}
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