#! bash

# Sets up the shell for interactive commands

# Use the terminfo backspace character as the erase character. This is not
# enabled by default because terminfo is often broken.
#stty erase $(tput kbs)

# Basic prompt only: user@host:directory$
PS1='\u@\h:\w\n\$ '

# Check for unsupported TERM variable
if ! tput init &> /dev/null; then
	echo "Warning! TERM=$TERM unsupported, using TERM=xterm"
	export TERM=xterm
fi

# The all important colours!
[ "${HOME}/.bash/colors" ] && source "${HOME}/.bash/colors"

# xterm titlebar displays 'hostname:workingdir'
if tput hs || tput tsl &> /dev/null; then
	PROMPT_COMMAND='tput tsl; echo -n "$(hostname| cut -d. -f1):${PWD/$HOME/~}"; tput fsl;'
fi

# screen window displays current command
case "${TERM}" in
screen*)
	PROMPT_COMMAND="$PROMPT_COMMAND echo -ne '\033k\033\\'"
	;;
esac

# Useful aliases
alias ls='ls --color=auto'
alias ll='ls -hlF'
alias la='ls -ha'
alias  l='ls -halF'
alias f='find . -iname'
alias webshare='python -c "import SimpleHTTPServer; SimpleHTTPServer.test()"'
alias rm='rm -i'
alias less='less -R'
alias grep='grep --color=auto --exclude "*.svn-base"'
alias scp='scp -o ControlPath=none'
alias bc='bc -ql'
alias vv='vncviewer -encodings "tight hextile copyrect"'
alias watch='watch -n1'
alias sudo='sudo ' # ability to use aliases with sudo
alias sudosu='sudo su -l -s /bin/bash'
alias _psresources='ps -weo pid,user:16,%cpu,%mem,stat,start_time,bsdtime,args'
alias pscpu='_psresources --sort -%cpu|less -S'
alias psmem='_psresources --sort -%mem|less -S'
alias pstree='ps --forest -weo pid,user:16,args --sort start_time|less -S'
alias pstime='ps -weo pid,user:16,lstart,args --sort start_time|less -S'


# Colorful man pages
function man {
    env \
		LESS_TERMCAP_md=$'\E[01;38;5;74m' \
		LESS_TERMCAP_me=$'\E[0m' \
		LESS_TERMCAP_us=$'\E[04;38;5;146m' \
		LESS_TERMCAP_ue=$'\E[0m' \
    man "$@"
}

# Sets colours to be appropriate for a light on dark terminal
function darkterm {
	DARK=1
	source "${HOME}/.bash/colors"
}

# Sets the colours to be appropriate for a dark on light terminal
function lightterm {
	DARK=0
	source "${HOME}/.bash/colors"
}

# Usage: mcd somedir
# Creates the directory if it doesn't exist, and changes into it
function mcd {
	mkdir -p "${1}" &&
	cd "${1}"
}

# Usage: vimf somefile
# Does a recursive search of the current directory for somefile, then edits it
function vimf {
	find . -name "${1}" -exec vim '{}' +
}

# Sets the nice and ionice priorities for the current shell to the lowest values
function slowshell {
	ionice -c 3 -p $$
	renice -n 19 -p $$
}


# Bash should check the terminal size after every command terminates
shopt -s checkwinsize

# Don't attempt to tab-complete an empty line
shopt -s no_empty_cmd_completion

# Local customisations
[ -r "${HOME}/.bash/interactive_local" ] && source "${HOME}/.bash/interactive_local"

# Load bash completion if available
[ -r "/etc/bash_completion" ] && source "/etc/bash_completion"