DateUtil.java

package in.snoozmark.android.textclockbackport;

public class DateUtil {
	
	/** @deprecated Use a literal {@code '} instead. */
    @Deprecated
    public static final char QUOTE = '\'';
	
	/** @deprecated Use a literal {@code 's'} instead. */
    @Deprecated
    public static final char SECONDS = 's';

	public static boolean hasSeconds(CharSequence inFormat) {
        return hasDesignator(inFormat, SECONDS);
    }

    /**
* Test if a format string contains the given designator. Always returns
* {@code false} if the input format is {@code null}.
*
* @hide
*/
    public static boolean hasDesignator(CharSequence inFormat, char designator) {
        if (inFormat == null) return false;

        final int length = inFormat.length();

        int c;
        int count;

        for (int i = 0; i < length; i += count) {
            count = 1;
            c = inFormat.charAt(i);

            if (c == QUOTE) {
                count = skipQuotedText(inFormat, i, length);
            } else if (c == designator) {
                return true;
            }
        }

        return false;
    }

    private static int skipQuotedText(CharSequence s, int i, int len) {
        if (i + 1 < len && s.charAt(i + 1) == QUOTE) {
            return 2;
        }

        int count = 1;
        // skip leading quote
        i++;

        while (i < len) {
            char c = s.charAt(i);

            if (c == QUOTE) {
                count++;
                // QUOTEQUOTE -> QUOTE
                if (i + 1 < len && s.charAt(i + 1) == QUOTE) {
                    i++;
                } else {
                    break;
                }
            } else {
                i++;
                count++;
            }
        }

        return count;
    }

}