add bash-it

dot_bash_it/lib/preview.bash

@@ -0,0 +1,34 @@
+# shellcheck shell=bash
+#
+# Displays the prompt from each _Bash It_ theme.
+
+function _bash-it-preview() {
+	local BASH_IT_THEME BASH_IT_LOG_LEVEL
+	local themes IFS=$'\n' cur
+
+	if [[ $# -gt '0' ]]; then
+		themes=("$@")
+	else
+		themes=("${BASH_IT?}/themes"/*/*.theme.bash)
+		themes=("${themes[@]##*/}")
+		themes=("${themes[@]%.theme.bash}")
+	fi
+
+	if [[ ${COMP_CWORD:-} -gt '0' ]]; then
+		cur="${COMP_WORDS[COMP_CWORD]}"
+		read -d '' -ra COMPREPLY < <(compgen -W "all${IFS}${themes[*]}" -- "${cur}")
+		return
+	fi
+	printf '\n\n\t%s\n\n' "Previewing Bash-it Themes"
+
+	# shellcheck disable=SC2034
+	for BASH_IT_THEME in "${themes[@]}"; do
+		BASH_IT_LOG_LEVEL=0
+		bash --init-file "${BASH_IT?}/bash_it.sh" -i <<< '_bash-it-flash-term "${#BASH_IT_THEME}" "${BASH_IT_THEME}"'
+	done
+}
+
+if [[ -n "${BASH_PREVIEW:-}" ]]; then
+	_bash-it-preview "${BASH_PREVIEW}" "$@"
+	unset BASH_PREVIEW #Prevent infinite looping
+fi