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=( $( compgen -f ) ) 9 } 10 11 _clang() 12 { 13 local cur prev words cword arg flags w1 w2 14 # If latest bash-completion is not supported just initialize COMPREPLY and 15 # initialize variables by setting manualy. 16 _init_completion -n 2> /dev/null 17 if [[ "$?" != 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[$cword - 2]}" 26 fi 27 28 # Clang want to know if -cc1 or -Xclang option is specified or not, because we don't want to show 29 # cc1 options otherwise. 30 if [[ "${COMP_WORDS[1]}" == "-cc1" || "$w1" == "-Xclang" ]]; then 31 arg="#" 32 fi 33 34 # bash always separates '=' as a token even if there's no space before/after '='. 35 # On the other hand, '=' is just a regular character for clang options that 36 # contain '='. For example, "-stdlib=" is defined as is, instead of "-stdlib" and "=". 37 # So, we need to partially undo bash tokenization here for integrity. 38 if [[ "$cur" == -* ]]; then 39 # -foo<tab> 40 arg="$arg$cur" 41 elif [[ "$w1" == -* && "$cur" == '=' ]]; then 42 # -foo=<tab> 43 arg="$arg$w1=," 44 elif [[ "$cur" == -*= ]]; then 45 # -foo=<tab> 46 arg="$arg$cur," 47 elif [[ "$w1" == -* ]]; then 48 # -foo <tab> or -foo bar<tab> 49 arg="$arg$w1,$cur" 50 elif [[ "$w2" == -* && "$w1" == '=' ]]; then 51 # -foo=bar<tab> 52 arg="$arg$w2=,$cur" 53 elif [[ ${cur: -1} != '=' && ${cur/=} != $cur ]]; then 54 # -foo=bar<tab> 55 arg="$arg${cur%=*}=,${cur#*=}" 56 fi 57 58 # expand ~ to $HOME 59 eval local path=${COMP_WORDS[0]} 60 flags=$( "$path" --autocomplete="$arg" 2>/dev/null | sed -e 's/\t.*//' ) 61 # If clang is old that it does not support --autocomplete, 62 # fall back to the filename completion. 63 if [[ "$?" != 0 ]]; then 64 _clang_filedir 65 return 66 fi 67 68 # When clang does not emit any possible autocompletion, or user pushed tab after " ", 69 # just autocomplete files. 70 if [[ "$flags" == "$(echo -e '\n')" || "$arg" == "" ]]; then 71 # If -foo=<tab> and there was no possible values, autocomplete files. 72 [[ "$cur" == '=' || "$cur" == -*= ]] && cur="" 73 _clang_filedir 74 elif [[ "$cur" == '=' ]]; then 75 COMPREPLY=( $( compgen -W "$flags" -- "") ) 76 else 77 # Bash automatically appends a space after '=' by default. 78 # Disable it so that it works nicely for options in the form of -foo=bar. 79 [[ "${flags: -1}" == '=' ]] && compopt -o nospace 2> /dev/null 80 COMPREPLY=( $( compgen -W "$flags" -- "$cur" ) ) 81 fi 82 } 83 complete -F _clang clang 84
