84 lines
2.8 KiB
Bash
84 lines
2.8 KiB
Bash
# Please add "source /path/to/bash-autocomplete.sh" to your .bashrc to use this.
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_clang_filedir()
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{
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# _filedir function provided by recent versions of bash-completion package is
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# better than "compgen -f" because the former honors spaces in pathnames while
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# the latter doesn't. So we use compgen only when _filedir is not provided.
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_filedir 2> /dev/null || COMPREPLY=( $( compgen -f ) )
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}
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_clang()
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{
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local cur prev words cword arg flags w1 w2
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# If latest bash-completion is not supported just initialize COMPREPLY and
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# initialize variables by setting manualy.
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_init_completion -n 2> /dev/null
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if [[ "$?" != 0 ]]; then
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COMPREPLY=()
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cword=$COMP_CWORD
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cur="${COMP_WORDS[$cword]}"
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fi
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w1="${COMP_WORDS[$cword - 1]}"
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if [[ $cword > 1 ]]; then
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w2="${COMP_WORDS[$cword - 2]}"
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fi
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# Clang want to know if -cc1 or -Xclang option is specified or not, because we don't want to show
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# cc1 options otherwise.
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if [[ "${COMP_WORDS[1]}" == "-cc1" || "$w1" == "-Xclang" ]]; then
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arg="#"
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fi
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# bash always separates '=' as a token even if there's no space before/after '='.
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# On the other hand, '=' is just a regular character for clang options that
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# contain '='. For example, "-stdlib=" is defined as is, instead of "-stdlib" and "=".
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# So, we need to partially undo bash tokenization here for integrity.
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if [[ "$cur" == -* ]]; then
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# -foo<tab>
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arg="$arg$cur"
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elif [[ "$w1" == -* && "$cur" == '=' ]]; then
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# -foo=<tab>
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arg="$arg$w1=,"
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elif [[ "$cur" == -*= ]]; then
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# -foo=<tab>
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arg="$arg$cur,"
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elif [[ "$w1" == -* ]]; then
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# -foo <tab> or -foo bar<tab>
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arg="$arg$w1,$cur"
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elif [[ "$w2" == -* && "$w1" == '=' ]]; then
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# -foo=bar<tab>
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arg="$arg$w2=,$cur"
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elif [[ ${cur: -1} != '=' && ${cur/=} != $cur ]]; then
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# -foo=bar<tab>
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arg="$arg${cur%=*}=,${cur#*=}"
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fi
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# expand ~ to $HOME
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eval local path=${COMP_WORDS[0]}
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flags=$( "$path" --autocomplete="$arg" 2>/dev/null | sed -e 's/\t.*//' )
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# If clang is old that it does not support --autocomplete,
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# fall back to the filename completion.
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if [[ "$?" != 0 ]]; then
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_clang_filedir
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return
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fi
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# When clang does not emit any possible autocompletion, or user pushed tab after " ",
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# just autocomplete files.
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if [[ "$flags" == "$(echo -e '\n')" || "$arg" == "" ]]; then
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# If -foo=<tab> and there was no possible values, autocomplete files.
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[[ "$cur" == '=' || "$cur" == -*= ]] && cur=""
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_clang_filedir
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elif [[ "$cur" == '=' ]]; then
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COMPREPLY=( $( compgen -W "$flags" -- "") )
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else
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# Bash automatically appends a space after '=' by default.
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# Disable it so that it works nicely for options in the form of -foo=bar.
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[[ "${flags: -1}" == '=' ]] && compopt -o nospace 2> /dev/null
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COMPREPLY=( $( compgen -W "$flags" -- "$cur" ) )
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fi
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}
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complete -F _clang clang
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