Add maser theme

themes/maser.zsh-theme

@@ -0,0 +1,65 @@
+# theme based on alanpeabody and my old Bash prompt
+
+# PWD, truncated to 20 characters if it is too long
+function collapse_pwd {
+    local pwd_truncation_length=20
+    local dir=$(pwd)
+    
+    if $(echo $dir | grep "^$HOME" >>/dev/null)
+    then
+        dir="~$(echo $dir | awk -F$HOME '{print $2}')"
+    fi
+        
+    if [ $(echo -n $dir | wc -c | tr -d " ") -gt $pwd_truncation_length ]
+    then
+        dir="…${dir[-$pwd_truncation_length,-1]}"
+    fi
+    echo -n $dir
+}
+
+# compares HEAD to its remote and prints strings like ahead(2), behind(1) and diverged(1 2)
+function git_remote_information {
+
+    local git_status="$(git status 2>/dev/null)"
+
+    if [ -n "$git_status" ] ; then
+        local remote_information
+
+        if grep -q "ahead of" <<< $git_status ; then
+            local n_commits="$(egrep -o "by [0-9]+ commit" <<< $git_status | awk '{ print $2 }')"
+            remote_information=" ahead($n_commits)"
+        fi
+        
+        if grep -q "have diverged" <<< $git_status ; then
+            local n_commits="$(egrep -o "have [0-9]+ and [0-9]+ different commit" <<< $git_status | awk '{ print $2,$4 }')"
+            remote_information=" diverged($n_commits)"
+        fi
+
+        if grep -q "Your branch is behind" <<< $git_status ; then
+            local n_commits="$(egrep -o "by [0-9]+ commit" <<< $git_status | awk '{ print $2 }')"
+            remote_information=" behind($n_commits)"
+        fi
+    fi
+    echo $remote_information
+}
+
+local pwd='%{$fg[white]%}$(collapse_pwd)%{$reset_color%}'
+
+local return_code='%(?..%{$fg[red]%}%? ↵%{$reset_color%})'
+local git_information='$(git_prompt_status)%{$reset_color%}$(git_prompt_info)%{$reset_color%}%{$fg[cyan]%}$(git_remote_information)%{$reset_color%}'
+
+ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[green]%}"
+ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_DIRTY=""
+ZSH_THEME_GIT_PROMPT_CLEAN=""
+
+ZSH_THEME_GIT_PROMPT_ADDED="%{$fg[green]%} ✚"
+ZSH_THEME_GIT_PROMPT_MODIFIED="%{$fg[blue]%} ✹"
+ZSH_THEME_GIT_PROMPT_DELETED="%{$fg[red]%} ✖"
+ZSH_THEME_GIT_PROMPT_RENAMED="%{$fg[magenta]%} ➜"
+ZSH_THEME_GIT_PROMPT_UNMERGED="%{$fg[yellow]%} ═"
+ZSH_THEME_GIT_PROMPT_UNTRACKED="%{$fg[cyan]%} ✭"
+
+PROMPT="${pwd} ➤ "
+RPROMPT="${return_code} ${git_information}"
+