Adds zanshin theme

themes/zanshin.zsh-theme

@@ -0,0 +1,104 @@
+# 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
+}