add brewthu to use THU source of homebrew

zsh/zshrc

@@ -110,4 +110,27 @@ source $ZSH/oh-my-zsh.sh
 # Example aliases
 # alias zshconfig="mate ~/.zshrc"
 # alias ohmyzsh="mate ~/.oh-my-zsh"
+
+# Homebrew tsinghua mirror for macOS
+function brewthu() {
+	if [[ $HOMEBREW_BOTTLE_DOMAIN = "" ]]; then
+		export HOMEBREW_API_DOMAIN="https://mirrors.tuna.tsinghua.edu.cn/homebrew-bottles/api"
+		export HOMEBREW_BOTTLE_DOMAIN="https://mirrors.tuna.tsinghua.edu.cn/homebrew-bottles"
+		export HOMEBREW_BREW_GIT_REMOTE="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git"
+		export HOMEBREW_CORE_GIT_REMOTE="https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git"
+		export HOMEBREW_PIP_INDEX_URL="https://pypi.tuna.tsinghua.edu.cn/simple"
+		# Bottles
+		export HOMEBREW_BOTTLE_DOMAIN="https://mirrors.tuna.tsinghua.edu.cn/homebrew-bottles"
+	else
+		unset HOMEBREW_API_DOMAIN
+		unset HOMEBREW_BOTTLE_DOMAIN
+		unset HOMEBREW_BREW_GIT_REMOTE
+		unset HOMEBREW_CORE_GIT_REMOTE
+		unset HOMEBREW_PIP_INDEX_URL
+		# Bottles
+		unset HOMEBREW_BOTTLE_DOMAIN
+	fi
+}
+
+# using starship as prompt
 eval "$(starship init zsh)"