feat: add ys prompt

prompt_ys_setup

@@ -0,0 +1,65 @@
+typeset -aHg YS_PROMPT_SEGMENTS=(
+  prompt_start
+  prompt_context
+  prompt_dir
+  prompt_git
+  prompt_end
+)
+
+prompt_start() {
+  print -n "%B%F{blue}%#%b%f "
+}
+
+prompt_context() {
+  print -n "%(#,%K{yellow}%F{black}%n%k%f,%F{cyan}%n%f) @ %F{green}%m%f "
+}
+
+prompt_dir() {
+  print -n "in %B%F{yellow}%~%b%f "
+}
+
+prompt_git() {
+  print -n "$vcs_info_msg_0_"
+}
+
+prompt_end() {
+  print -n "[%*] %(?,,C:%F{red}%?%f)\n%F{red}$%f "
+}
+
+prompt_ys_main() {
+  for prompt_segment in "${YS_PROMPT_SEGMENTS[@]}"; do
+    [[ -n $prompt_segment ]] && $prompt_segment
+  done
+}
+
+prompt_ys_precmd() {
+  vcs_info
+  PROMPT='$(prompt_ys_main)'
+}
+
+prompt_ys_setup() {
+  autoload -Uz add-zsh-hook
+  autoload -Uz vcs_info
+
+  prompt_opts=(cr subst percent)
+
+  add-zsh-hook precmd prompt_ys_precmd
+
+  zstyle ':vcs_info:*' enable git
+  zstyle ':vcs_info:*' check-for-changes false
+
+  zstyle ':vcs_info:git:*' formats 'on %s:%F{cyan}%b%f %m '
+  zstyle ':vcs_info:git*+set-message:*' hooks git-branch-status
+}
+
++vi-git-branch-status() {
+  if [[ -n $(git status --porcelain --ignore-submodules=dirty | head -n1) ]] ; then
+    hook_com[misc]='%F{red}x%f'
+  else
+    hook_com[misc]='%F{green}o%f'
+  fi
+}
+
+prompt_ys_setup "$@"
+
+# vim: ft=zsh expandtab tabstop=2 shiftwidth=2