Move all helpers to 'helpers/' dir

scripts/helpers/plugin_functions.sh

@@ -0,0 +1,54 @@
+# using @tpm_plugins is now deprecated in favor of using @plugin syntax
+tpm_plugins_variable_name="@tpm_plugins"
+
+_tpm_path() {
+	local string_path="$(tmux start-server\; show-environment -g TMUX_PLUGIN_MANAGER_PATH | cut -f2 -d=)/"
+	# manually expanding tilde or `$HOME` variable.
+	string_path="${string_path/#\~/$HOME}"
+	echo "${string_path/#\$HOME/$HOME}"
+}
+
+_CACHED_TPM_PATH="$(_tpm_path)"
+
+tpm_path() {
+	echo "$_CACHED_TPM_PATH"
+}
+
+_tmux_conf_contents() {
+	cat /etc/tmux.conf ~/.tmux.conf 2>/dev/null
+}
+
+tpm_plugins_list_helper() {
+	# DEPRECATED: lists plugins from @tpm_plugins option
+	echo "$(tmux start-server\; show-option -gqv "$tpm_plugins_variable_name")"
+
+	# read set -g @plugin "tmux-plugins/tmux-example-plugin" entries
+	_tmux_conf_contents |
+		awk '/^ *set +-g +@plugin/ { gsub(/'\''/,""); gsub(/'\"'/,""); print $4 }'
+}
+
+# Allowed plugin name formats:
+# 1. "git://github.com/user/plugin_name.git"
+# 2. "user/plugin_name"
+plugin_name_helper() {
+	local plugin="$1"
+	# get only the part after the last slash, e.g. "plugin_name.git"
+	local plugin_basename="$(basename "$plugin")"
+	# remove ".git" extension (if it exists) to get only "plugin_name"
+	local plugin_name="${plugin_basename%.git}"
+	echo "$plugin_name"
+}
+
+plugin_path_helper() {
+	local plugin="$1"
+	local plugin_name="$(plugin_name_helper "$plugin")"
+	echo "$(tpm_path)${plugin_name}/"
+}
+
+plugin_already_installed() {
+	local plugin="$1"
+	local plugin_path="$(plugin_path_helper "$plugin")"
+	[ -d "$plugin_path" ] &&
+		cd "$plugin_path" &&
+		git remote >/dev/null 2>&1
+}

scripts/helpers/utility.sh

@@ -0,0 +1,17 @@
+ensure_tpm_path_exists() {
+	mkdir -p "$(tpm_path)"
+}
+
+fail_helper() {
+	local message="$1"
+	echo "$message" >&2
+	FAIL="true"
+}
+
+exit_value_helper() {
+	if [ "$FAIL" == "true" ]; then
+		exit 1
+	else
+		exit 0
+	fi
+}