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# bash completion for strace

have strace &&
_strace()
{
    local cur prev offset i syscalls arch unistd

    # check if we're still completing strace
    offset=0
    for (( i=1; i <= COMP_CWORD; i++ )); do
        case ${COMP_WORDS[$i]} in
            -o|-e|-p)
                i=$((i+1))
                continue
                ;;
            -*)
                continue
                ;;
        esac
        offset=$i
        break
    done

    if [ $offset -gt 0 ]; then
        # FAIL: _command_offset is not defined anywhere. Guillame?
        _command_offset $offset
    else

        COMPREPLY=()
        _get_comp_words_by_ref cur prev

        case $prev in
            -e)
                if [[ "$cur" == *=* ]]; then
                    prev=${cur/=*/}
                    cur=${cur/*=/}

                    # Import arch-specific syscalls -- not foolproof IMHO
                    #+                                     --David Paleino
                    arch=$(command uname -m)
                    syscalls=$(awk '/^#define __NR/ {print $2}' \
                        /usr/include/asm/unistd.h | sed -e \
                        's/__NR_//')
                    if [ -z "$syscalls" ]; then
                        if [[ "$arch" == *86 ]]; then
                            unistd=/usr/include/asm/unistd_32.h
                        else
                            unistd=/usr/include/asm/unistd_64.h
                        fi
                        syscalls=$(awk '/^#define __NR/ {print $2}' \
                            $unistd | sed -e 's/__NR_//')
                    fi

                    case $prev in
                        trace)
                            COMPREPLY=( $( compgen -W "$syscalls file process
                                network signal ipc desc all none" -- "$cur") )
                            return 0
                            ;;
                    esac
                else
                    COMPREPLY=( $( compgen -S"=" -W 'trace abbrev verbose raw
                        signal read write' -- "$cur" ) )
                fi
                return 0
                ;;
            -o)
                _filedir
                return 0
                ;;
            -p)
                _pids
                return 0
                ;;
            -S)
                COMPREPLY=( $( compgen -W 'time calls name nothing' \
                    -- "$cur" ) )
                return 0
                ;;
            -u)
                _allowed_users
                return 0
                ;;
        esac

        if [[ "$cur" == -* ]]; then
            COMPREPLY=( $( compgen -W '-c -d -f -ff -F --help -i -q \
                -r -t -tt -ttt -T -v -V -x -xx -a -e -o -O -p \
                -s -S -u -E' -- "$cur" ) )
        else
            COMPREPLY=( $( compgen -c -- "$cur" ) )
        fi
    fi
} &&
complete -F _strace -o default strace

# Local variables:
# mode: shell-script
# sh-basic-offset: 4
# sh-indent-comment: t
# indent-tabs-mode: nil
# End:
# ex: ts=4 sw=4 et filetype=sh