bash_functions

# Use ack to search my history file; pipe to less if necessary
hack()
{
    var=$(history | ack $1 | grep -v 'bin/ack' | wc -l)
    if (( $var > 22 ))
    then
        history | ack $1 | grep -v hack | less
    else
        history | ack $1 | grep -v hack
    fi
}

# Use ack to search output of ps ax; pipe to less if necessary
pack()
{
    var=$(ps ax | ack $1 | grep -v 'bin/ack' | wc -l)
    if (( $var > 22 ))
    then
        ps ax | ack $1 | grep -v 'bin/ack' | less
    else
        ps ax | ack $1 | grep -v 'bin/ack'
    fi
}

# start mpd if it's not already running
mp_start() {
    count=$(ps -c | grep mpd | wc -l)
    if (( $count > 0 ))
    then
        mpd --no-daemon &
        # mpdscribble --no-daemon &
        mpc clear
    fi
}

mycc() {
  output=${2:-"${1%.c}"}
  clang -Wall -W -pedantic -std=c99 -o "$output" "$1"
}

# ksh-style "cd old new" for bash
# "ccd old new" replaces old with new throughout $PWD and then tries
# to cd to the new path
#
# This works very well for eg $HOME/mmt/2010/compsci2/grades ->
# $HOME/mmt/2010/compsci3/grades which I have to do constantly
#
# Shamelessly stolen from Learning the Bash Shell (3ed), Cameron Newham
# & Bill Rosenblatt
ccd() {
    case "$#" in
        0|1)
            builtin cd $1
            ;;
        2)
            newdir=${PWD//$1/$2}
            case "$newdir" in
                $PWD)
                    echo "ccd: bad substitution" >&2
                    return 1
                    ;;
                *)
                    builtin cd "$newdir"
                    pwd
                    ;;
            esac
            ;;
        *)
            echo "ccd: wrong arg count" 1>&2
            return 1
            ;;
    esac
}

## See https://twitter.com/#!/mlafeldt/status/192195940164173824
# Get the absolute directory, symlinks resolved
realdir() {
    ( cd -P -- "${1:-.}" && pwd )
}