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