.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
case $- in
    *i*) ;;
      *) return;;
esac

# don't put duplicate lines or lines starting with space in the history.
# See bash(1) for more options
HISTCONTROL=ignoreboth

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

# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)
HISTSIZE=1000
HISTFILESIZE=2000

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

# If set, the pattern "**" used in a pathname expansion context will
# match all files and zero or more directories and subdirectories.
#shopt -s globstar

# 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|*-256color) color_prompt=yes;;
    *256*)
        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

function parse_git_branch() {
    BRANCH=`git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'`
    if [ ! "${BRANCH}" == "" ]
    then
	    STAT=`parse_git_dirty`
	    echo "[${BRANCH}${STAT}]"
    else
	    echo ""
    fi
}

# get current status of git repo
function parse_git_dirty {
    status=`git status -uno 2>&1 | tee`
    dirty=`echo -n "${status}" 2> /dev/null | grep "modified:" &> /dev/null; echo "$?"`
    untracked=`echo -n "${status}" 2> /dev/null | grep "Untracked files" &> /dev/null; echo "$?"`
    ahead=`echo -n "${status}" 2> /dev/null | grep "Your branch is ahead of" &> /dev/null; echo "$?"`
    behind=`echo -n "${status}" 2> /dev/null | grep "Your branch is behind" &> /dev/null; echo "$?"`
    diverged=`echo -n "${status}" 2> /dev/null | grep "have diverged" &> /dev/null; echo "$?"`
    newfile=`echo -n "${status}" 2> /dev/null | grep "new file:" &> /dev/null; echo "$?"`
    renamed=`echo -n "${status}" 2> /dev/null | grep "renamed:" &> /dev/null; echo "$?"`
    deleted=`echo -n "${status}" 2> /dev/null | grep "deleted:" &> /dev/null; echo "$?"`
    bits=''
    if [ "${renamed}" == "0" ]; then
	    bits="r${bits}"
    fi
    if [ "${ahead}" == "0" ]; then
	    bits=">${bits}"
    fi
    if [ "${behind}" == "0" ]; then
	    bits="<${bits}"
    fi
    if [ "${diverged}" == "0" ]; then
	    bits="<>${bits}"
    fi
    if [ "${newfile}" == "0" ]; then
	    bits="+${bits}"
    fi
    if [ "${untracked}" == "0" ]; then
	    bits="?${bits}"
    fi
    if [ "${deleted}" == "0" ]; then
	    bits="x${bits}"
    fi
    if [ "${dirty}" == "0" ]; then
	    bits="!${bits}"
    fi
    if [ ! "${bits}" == "" ]; then
	    echo " ${bits}"
    else
	    echo ""
    fi
}

if [ "$color_prompt" = yes ]; then
    PS1="[${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;37m\]\w\[\033[00m\]]\$ \`parse_git_branch\` \A "
else
    PS1='[${debian_chroot:+($debian_chroot)}\u@\h:\w]\$ \A '
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

# enable color support of ls and also add handy aliases
if [ -x /usr/bin/dircolors ]; then
    test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
    alias ls='ls --color=auto'
    #alias dir='dir --color=auto'
    #alias vdir='vdir --color=auto'

    alias grep='grep --color=auto'
    alias fgrep='fgrep --color=auto'
    alias egrep='egrep --color=auto'
fi

# colored GCC warnings and errors
#export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'

# some more ls aliases
alias ll='ls -alF'
alias la='ls -A'
alias l='ls -CF'

# Add an "alert" alias for long running commands.  Use like so:
#   sleep 10; alert
alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1|sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'

# Alias definitions.
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
# See /usr/share/doc/bash-doc/examples in the bash-doc package.

if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases
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 ! shopt -oq posix; then
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
  fi
fi

PROMPT_COMMAND='history -a'

alias work='screen -D -R main'
#if [[ -z "$STY" ]]; then
#       screen -xRR session_name
#fi

function updateCTags() {
    #find . -type f -regex ".*\.[ch]" > ctagsfilelist
    #find . -type f -regex ".*\.cpp" >> ctagsfilelist
    find . -type f -regex '.*\.\(c\|h\|cpp\|hpp\|cxx\|hxx\|hh\|cc\)' > ctagsfilelist
    for var in "$@"
    do
        sed -i "/$var/d" ctagsfilelist
    done
    ctags -L ctagsfilelist
    rm ctagsfilelist
}

function updateCScope() {
    #find . -type f \( -name "*.c" -o -name "*.h" -o -name "*.hpp" -o -name "*.cpp" \) > cscope.files
    find . -type f -regex '.*\.\(c\|h\|cpp\|hpp\|cxx\|hxx\|hh\|cc\)' > cscope.files
    for var in "$@"
    do
        sed -i "/$var/d" cscope.files
    done
    cscope -q -b
    rm cscope.files
}

TZ='Asia/Kolkata'; export TZ