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My oh-my-zsh theme, a derivative of the Soliah theme

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zanshin.zsh-theme
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# Shows little symbol '±' if you're currently at a git repo and '○' all other times
function prompt_char {
git branch >/dev/null 2>/dev/null && echo '±' && return
echo '○'
}
 
PROMPT='
%{$fg[blue]%}%n%{$reset_color%} on %{$fg[yellow]%}%m%{$reset_color%} in %{$fg[green]%}%~%b%{$reset_color%} $(git_time_since_commit)$(check_git_prompt_info)
${vcs_info_msg_0_}$(prompt_char) '
 
# rubies are red, and my rprompt is too
RPROMPT='%{$fg[tan]%}$(rvm_ruby_prompt)%{$reset_color%}%'
 
 
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]%}"
 
# display Ruby information, only when RVM is installed and only when you are using a RVM installed ruby.
function rvm_ruby_prompt {
ruby_version=$(~/.rvm/bin/rvm-prompt)
if [ -n "$ruby_version" ]; then
echo "[$ruby_version]"
fi
}
 
# 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 gemset list | grep '=>' | cut -b4-`
if [[ -n $GEMSET ]]; then
echo "%{$fg[yellow]%}$GEMSET%{$reset_color%}|"
fi
 
}
 
# 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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