Method fromBase64

src/main/java/fieldnashorn/sourcemap/Base64.java:65–69

@param c A base64 digit. @return A value in the range of 0-63.

(char c)

     * @return A value in the range of 0-63.
     */
    public static int fromBase64(char c) {
        int result = BASE64_DECODE_MAP[c];
        assert (result != -1) : "invalid char";
        return BASE64_DECODE_MAP[c];
    }

    /**
     * @param value an integer to base64 encode.