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PROMPT='%{$fg[cyan]%}%n@%M%{$reset_color%}:%{$fg[yellow]%}%~%b%{$reset_color%} $(git_time_since_commit)$(check_git_prompt_info)
$(prompt_char) '

export LSCOLORS="exfxcxdxbxegedabagacad"
export LS_COLORS='no=00:fi=00:di=01;34:ln=00;36:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=41;33;01:ex=00;32:*.cmd=00;32:*.exe=01;32:*.com=01;32:*.bat=01;32:*.btm=01;32:*.dll=01;32:*.tar=00;31:*.tbz=00;31:*.tgz=00;31:*.rpm=00;31:*.deb=00;31:*.arj=00;31:*.taz=00;31:*.lzh=00;31:*.lzma=00;31:*.zip=00;31:*.zoo=00;31:*.z=00;31:*.Z=00;31:*.gz=00;31:*.bz2=00;31:*.tb2=00;31:*.tz2=00;31:*.tbz2=00;31:*.avi=01;35:*.bmp=01;35:*.fli=01;35:*.gif=01;35:*.jpg=01;35:*.jpeg=01;35:*.mng=01;35:*.mov=01;35:*.mpg=01;35:*.pcx=01;35:*.pbm=01;35:*.pgm=01;35:*.png=01;35:*.ppm=01;35:*.tga=01;35:*.tif=01;35:*.xbm=01;35:*.xpm=01;35:*.dl=01;35:*.gl=01;35:*.wmv=01;35:*.aiff=00;32:*.au=00;32:*.mid=00;32:*.mp3=00;32:*.ogg=00;32:*.voc=00;32:*.wav=00;32:'

ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[white]%}"
ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%})"

# Text to display if the branch is dirty
ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[red]%}*%{$reset_color%}"

# Text to display if the branch is clean
ZSH_THEME_GIT_PROMPT_CLEAN=""

# Colors vary depending on time lapsed.
ZSH_THEME_GIT_TIME_SINCE_COMMIT_SHORT="%{$fg[green]%}"
ZSH_THEME_GIT_TIME_SHORT_COMMIT_MEDIUM="%{$fg[yellow]%}"
ZSH_THEME_GIT_TIME_SINCE_COMMIT_LONG="%{$fg[red]%}"
ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL="%{$fg[cyan]%}"


 #Git sometimes goes into a detached head state. git_prompt_info doesn't
# return anything in this case. So wrap it in another function and check
# for an empty string.
function check_git_prompt_info() {
    if git rev-parse --git-dir > /dev/null 2>&1; then
        if [[ -z $(git_prompt_info) ]]; then
            echo "%{$fg[magenta]%}detached-head%{$reset_color%})"
        else
            echo "$(git_prompt_info)"
        fi
    fi
}

# Determine if we are using a gemset.
function rvm_gemset() {
    GEMSET=`rvm current`
    if [[ -n $GEMSET ]]; then
        echo "%{$fg[yellow]%}$GEMSET%{$reset_color%}|"
    fi
}

# Display a different prompt dependant of whether we're using a VC or not
function prompt_char {
    git branch >/dev/null 2>/dev/null && echo 'λ' && return
    hg root >/dev/null 2>/dev/null && echo '☿' && return
    echo '±'
}

# Determine the time since last commit. If branch is clean,
# use a neutral color, otherwise colors will vary according to time.
function git_time_since_commit() {
    if git rev-parse --git-dir > /dev/null 2>&1; then
        # Only proceed if there is actually a commit.
        if [[ $(git log 2>&1 > /dev/null | grep -c "^fatal: bad default revision") == 0 ]]; then
            # Get the last commit.
            last_commit=`git log --pretty=format:'%at' -1 2> /dev/null`
            now=`date +%s`
            seconds_since_last_commit=$((now-last_commit))

            # Totals
            MINUTES=$((seconds_since_last_commit / 60))
            HOURS=$((seconds_since_last_commit/3600))
           
            # Sub-hours and sub-minutes
            DAYS=$((seconds_since_last_commit / 86400))
            SUB_HOURS=$((HOURS % 24))
            SUB_MINUTES=$((MINUTES % 60))
            
            if [[ -n $(git status -s 2> /dev/null) ]]; then
                if [ "$MINUTES" -gt 30 ]; then
                    COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_LONG"
                elif [ "$MINUTES" -gt 10 ]; then
                    COLOR="$ZSH_THEME_GIT_TIME_SHORT_COMMIT_MEDIUM"
                else
                    COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_SHORT"
                fi
            else
                COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL"
            fi

            if [ "$HOURS" -gt 24 ]; then
                echo "($(rvm_gemset)$COLOR${DAYS}d${SUB_HOURS}h${SUB_MINUTES}m%{$reset_color%}|"
            elif [ "$MINUTES" -gt 60 ]; then
                echo "($(rvm_gemset)$COLOR${HOURS}h${SUB_MINUTES}m%{$reset_color%}|"
            else
                echo "($(rvm_gemset)$COLOR${MINUTES}m%{$reset_color%}|"
            fi
        else
            COLOR="$ZSH_THEME_GIT_TIME_SINCE_COMMIT_NEUTRAL"
            echo "($(rvm_gemset)$COLOR~|"
        fi
    fi
}
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