package com.doumee.keyCabinet.utils;

public class StringEscapeUtils {
    /**
     * Escapes a {@link String} for use in an Android shell command.
     *
     * @param str the {@link String} to escape
     * @return the Android shell escaped {@link String}
     */
    public static String escapeShell(String str) {
        if (str == null) {
            return null;
        }
        StringBuilder out = new StringBuilder();
        for (int i = 0; i < str.length(); ++i) {
            char ch = str.charAt(i);
            switch (ch) {
                case '$':
                    out.append("\\$");
                    break;
                case '\\':
                    out.append("");
                    break;
                default:
                    out.append(ch);
                    break;
            }
        }
        return out.toString();
    }
}