# -*- mode: shell-script; sh-basic-offset: 8; indent-tabs-mode: t -*-
# ex: ts=8 sw=8 noet filetype=sh
#
# bash completion for perl

have perl &&
{
_perlmodules()
{
    COMPREPLY=( $( compgen -P "$prefix" -W "$( perl -e 'sub mods { my ($base,$dir)=@_; return if  $base !~ /^\Q$ENV{cur}/; chdir($dir) or return; for (glob(q[*.pm])) {s/\.pm$//; print qq[$base$_\n]}; mods(/^(?:[.\d]+|$Config{archname}-$Config{osname}|auto)$/ ? undef : qq[${base}${_}\\\\:\\\\:],qq[$dir/$_]) for grep {-d} glob(q[*]); } mods(undef,$_) for @INC;' )" -- $cur ) )
}

_perl()
{
    local cur prev prefix temp
    local optPrefix optSuffix

    COMPREPLY=()
    cur=`_get_cword`
    prev=${COMP_WORDS[COMP_CWORD-1]}
    prefix=""

    # If option not followed by whitespace, reassign prev and cur
    if [[ "$cur" == -?* ]]; then
	temp=$cur
	prev=${temp:0:2}
	cur=${temp:2}
	optPrefix=-P$prev
	optSuffix=-S/
	prefix=$prev
    fi

    # only handle module completion for now
    case "$prev" in
    -I|-x)
    	local IFS=$'\t\n'
    	COMPREPLY=( $( compgen -d $optPrefix $optSuffix -- "$cur" ) )
    	return 0
    	;;
	-m|-M)
	    _perlmodules
	    return 0
	    ;;
    esac

    if [[ "$cur" == -* ]]; then
	    COMPREPLY=( $( compgen -W '-C -s -T -u -U -W -X -h -v -V -c -w -d \
		    -D -p -n -a -F -l -0 -I -m -M -P -S -x -i -e ' -- $cur ) )
    else
	_filedir
    fi
}
complete -F _perl $nospace $filenames perl

_perldoc()
{
    local cur prev prefix temp

    COMPREPLY=()
    cur=`_get_cword`
    prev=${COMP_WORDS[COMP_CWORD-1]}
    prefix=""

    # completing an option (may or may not be separated by a space)
    if [[ "$cur" == -?* ]]; then
	temp=$cur
	prev=${temp:0:2}
	cur=${temp:2}
	prefix=$prev
    fi

    # complete builtin perl functions
    case $prev in
	-f)
	    COMPREPLY=( $( compgen -W 'chomp chop chr crypt hex index lc \
	    lcfirst length oct ord pack q qq reverse rindex sprintf \
	    substr tr uc ucfirst y m pos quotemeta s split study qr abs \
	    atan2 cos exp hex int log oct rand sin sqrt srand pop push \
	    shift splice unshift grep join map qw reverse sort unpack \
	    delete each exists keys values binmode close closedir \
	    dbmclose dbmopen die eof fileno flock format getc print \
	    printf read readdir rewinddir seek seekdir select syscall \
	    sysread sysseek syswrite tell telldir truncate warn write \
	    pack read syscall sysread syswrite unpack vec -X chdir chmod \
	    chown chroot fcntl glob ioctl link lstat mkdir open opendir \
	    readlink rename rmdir stat symlink umask unlink utime caller \
	    continue do dump eval exit goto last next redo return \
	    sub wantarray caller import local my our package use defined \
	    formline reset scalar undef \
	    alarm exec fork getpgrp getppid getpriority kill pipe qx \
	    setpgrp setpriority sleep system times wait waitpid \
	    import no package require use bless dbmclose dbmopen package \
	    ref tie tied untie use accept bind connect getpeername \
	    getsockname getsockopt listen recv send setsockopt shutdown \
	    socket socketpair msgctl msgget msgrcv msgsnd semctl semget \
	    semop shmctl shmget shmread shmwrite endgrent endhostent \
	    endnetent endpwent getgrent getgrgid getgrnam getlogin \
	    getpwent getpwnam getpwuid setgrent setpwent endprotoent \
	    endservent gethostbyaddr gethostbyname gethostent \
	    getnetbyaddr getnetbyname getnetent getprotobyname \
	    getprotobynumber getprotoent getservbyname getservbyport \
	    getservent sethostent setnetent setprotoent setservent \
	    gmtime localtime time times' -- $cur ) )
	    return 0
	    ;;
    esac

    if [[ "$cur" == -* ]]; then
	    COMPREPLY=( $( compgen -W '-h -v -t -u -m -l -F -X -f -q' -- $cur ))
    else
	    # return available modules (unless it is clearly a file)
	    if [[ "$cur" != */* ]]; then
		    _perlmodules
		    COMPREPLY=( "${COMPREPLY[@]}" $( compgen -W '$( PAGER=/bin/cat man perl |  sed -ne "/perl.*Perl overview/,/perlwin32/p" | awk "\$NF=2 { print \$1}" | grep perl )' -- $cur ) )
	    fi
    fi
}
complete -F _perldoc $default perldoc
}