1# Please add "source /path/to/bash-autocomplete.sh" to your .bashrc to use this. 2 3_clang_filedir() 4{ 5 # _filedir function provided by recent versions of bash-completion package is 6 # better than "compgen -f" because the former honors spaces in pathnames while 7 # the latter doesn't. So we use compgen only when _filedir is not provided. 8 _filedir 2> /dev/null || COMPREPLY=( $( compgen -f ) ) 9} 10 11_clang() 12{ 13 local cur prev words cword arg flags w1 w2 14 # If latest bash-completion is not supported just initialize COMPREPLY and 15 # initialize variables by setting manually. 16 _init_completion -n 2> /dev/null 17 if [[ "$?" != 0 ]]; then 18 COMPREPLY=() 19 cword=$COMP_CWORD 20 cur="${COMP_WORDS[$cword]}" 21 fi 22 23 w1="${COMP_WORDS[$cword - 1]}" 24 if [[ $cword > 1 ]]; then 25 w2="${COMP_WORDS[$cword - 2]}" 26 fi 27 28 # Pass all the current command-line flags to clang, so that clang can handle 29 # these internally. 30 # '=' is separated differently by bash, so we have to concat them without ',' 31 for i in `seq 1 $cword`; do 32 if [[ $i == $cword || "${COMP_WORDS[$(($i+1))]}" == '=' ]]; then 33 arg="$arg${COMP_WORDS[$i]}" 34 else 35 arg="$arg${COMP_WORDS[$i]}," 36 fi 37 done 38 39 # expand ~ to $HOME 40 eval local path=${COMP_WORDS[0]} 41 # Use $'\t' so that bash expands the \t for older versions of sed. 42 flags=$( "$path" --autocomplete="$arg" 2>/dev/null | sed -e $'s/\t.*//' ) 43 # If clang is old that it does not support --autocomplete, 44 # fall back to the filename completion. 45 if [[ "$?" != 0 ]]; then 46 _clang_filedir 47 return 48 fi 49 50 # When clang does not emit any possible autocompletion, or user pushed tab after " ", 51 # just autocomplete files. 52 if [[ "$flags" == "$(echo -e '\n')" ]]; then 53 # If -foo=<tab> and there was no possible values, autocomplete files. 54 [[ "$cur" == '=' || "$cur" == -*= ]] && cur="" 55 _clang_filedir 56 elif [[ "$cur" == '=' ]]; then 57 COMPREPLY=( $( compgen -W "$flags" -- "") ) 58 else 59 # Bash automatically appends a space after '=' by default. 60 # Disable it so that it works nicely for options in the form of -foo=bar. 61 [[ "${flags: -1}" == '=' ]] && compopt -o nospace 2> /dev/null 62 COMPREPLY=( $( compgen -W "$flags" -- "$cur" ) ) 63 fi 64} 65complete -F _clang clang 66