dotfiles/bashrc

# ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples

# If not running interactively, don't do anything
[ -z "$PS1" ] && return

# Add an entry to PATH, iff it's not already there.
addpath() {
    wanted_path=$1
    at_end=$2
    FOUND=$(echo $PATH | grep $wanted_path)
    if [ $? -ne 0 ] ; then
        echo "Found with grep"
        if [ "$at_end" == "" ] ; then
            export PATH=$wanted_path:$PATH
        else
            export PATH=$PATH:$wanted_path
        fi
    fi
}

# don't put duplicate lines in the history. See bash(1) for more options
# don't overwrite GNU Midnight Commander's setting of `ignorespace'.
export HISTCONTROL=$HISTCONTROL${HISTCONTROL+,}ignoredups
# ... or force ignoredups and ignorespace
export HISTCONTROL=ignoreboth

# append to the history file, don't overwrite it
shopt -s histappend

# Don't escape variables when I hit tab
shopt -s direxpand

# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)

# check the window size after each command and, if necessary,
# update the values of LINES and COLUMNS.
shopt -s checkwinsize

# make less more friendly for non-text input files, see lesspipe(1)
#[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"

# set variable identifying the chroot you work in (used in the prompt below)
if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; then
    debian_chroot=$(cat /etc/debian_chroot)
fi

# set a fancy prompt (non-color, unless we know we "want" color)
case "$TERM" in
    xterm-color) color_prompt=yes;;
esac

# uncomment for a colored prompt, if the terminal has the capability; turned
# off by default to not distract the user: the focus in a terminal window
# should be on the output of commands, not on the prompt
#force_color_prompt=yes

if [ -n "$force_color_prompt" ]; then
    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
	# We have color support; assume it's compliant with Ecma-48
	# (ISO/IEC-6429). (Lack of such support is extremely rare, and such
	# a case would tend to support setf rather than setaf.)
	color_prompt=yes
    else
	color_prompt=
    fi
fi

if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
fi
unset color_prompt force_color_prompt

# If this is an xterm set the title to user@host:dir
case "$TERM" in
xterm*|rxvt*)
    PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\u@\h: \w\a\]$PS1"
    ;;
*)
    ;;
esac
export PROMPT_DIRTRIM=3

addpath $HOME/bin
addpath $HOME/opt/bin end

export IPLAYER_OUTDIR="$HOME/downloads/iplayer"

# enable color support of ls and also add handy aliases
if [ -x /usr/bin/dircolors ]; then
    eval "`dircolors -b`"
fi

# enable programmable completion features (you don't need to enable
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
# sources /etc/bash.bashrc).
if [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
fi

SSH_AGENT_FILE=$HOME/ssh.sh
if [ -f $SSH_AGENT_FILE ] ; then
    FILE_PID=$(grep SSH_AGENT_PID $SSH_AGENT_FILE | sed -e 's/^.*=//' | sed -e 's/;.*$//')
    RUNNING_PID=$(pgrep -U $USER ssh-agent)
    if [ "$RUNNING_PID" == "" ] ; then
        # No agent running
        echo Starting ssh-agent, you need to load keys though.
        ssh-agent > $SSH_AGENT_FILE
        . $SSH_AGENT_FILE
    elif [ "$RUNNING_PID" != "$FILE_PID" ] ; then
        echo Mismatch - file has $FILE_PID, system has $RUNNING_PID
        echo 'File is out of date; you might need to kill things and start again.'
    else
        # PIDs match, let\'s use the file
        . $SSH_AGENT_FILE 1>/dev/null
        KEYCOUNT=$(ssh-add -l | grep -v "The agent has no identities" | wc -l)
        echo Using ssh-agent $RUNNING_PID, $KEYCOUNT keys loaded
    fi
else
    # Assume no agent running
    echo Starting ssh-agent, you need to load keys though.
    ssh-agent > $SSH_AGENT_FILE
    . $SSH_AGENT_FILE
fi


if [ "$HOME2" != "" ] ; then
    echo "Switched root, merging $HOME2/.Xauthority"
    xauth merge $HOME2/.Xauthority
fi

# TODO Do with dropbox now...
# Done the longer format so we catch dropbox instance, rather than stuff like
# "links http://www.dropbox.com/"
# DROPBOX_PID=$(ps -u paul | grep dropbox$ | awk '{print $1}')
# if [ "$DROPBOX_PID" == "" ] ; then
    # echo "Note - Dropbox isn't running!"
# fi

[ -f ~/.fzf.bash ] && source ~/.fzf.bash

# Load any supplementary scripts
if [ -d "$HOME"/.bashrc.d ] ; then
    for config in "$HOME"/.bashrc.d/*.bash ; do
        source "$config"
    done
    unset -v config
fi
if [ -f ${HOME}/.bashrc.d/local/${HOSTNAME}.bash ] ; then
    source ${HOME}/.bashrc.d/local/${HOSTNAME}.bash
fi