Merge "Clean up BoringLayout#isBoring() a little" into nyc-dev

     */

    public static Metrics isBoring(CharSequence text, TextPaint paint,

            TextDirectionHeuristic textDir, Metrics metrics) {

        char[] temp = TextUtils.obtain(500);

        int length = text.length();

        final int MAX_BUF_LEN = 500;

        final char[] buffer = TextUtils.obtain(MAX_BUF_LEN);

        final int textLength = text.length();

        boolean boring = true;

        outer:

        for (int i = 0; i < length; i += 500) {

            int j = i + 500;

        for (int start = 0; start < textLength; start += MAX_BUF_LEN) {

            final int end = Math.min(start + MAX_BUF_LEN, textLength);

            if (j > length)

                j = length;

            // No need to worry about getting half codepoints, since we reject surrogate code units

            // as non-boring as soon we see one.

            TextUtils.getChars(text, start, end, buffer, 0);

            TextUtils.getChars(text, i, j, temp, 0);

            int n = j - i;

            for (int a = 0; a < n; a++) {

                char c = temp[a];

            final int len = end - start;

            for (int i = 0; i < len; i++) {

                final char c = buffer[i];

                if (c == '\n' || c == '\t' ||

                        (c >= 0x0590 && c <= 0x08FF) ||  // RTL scripts

                }

            }

            if (textDir != null && textDir.isRtl(temp, 0, n)) {

            // TODO: This looks a little suspicious, and in some cases can result in O(n^2)

            // run time. Consider moving outside the loop.

            if (textDir != null && textDir.isRtl(buffer, 0, len)) {

               boring = false;

               break outer;

            }

        }

        TextUtils.recycle(temp);

        TextUtils.recycle(buffer);

        if (boring && text instanceof Spanned) {

            Spanned sp = (Spanned) text;

            Object[] styles = sp.getSpans(0, length, ParagraphStyle.class);

            Object[] styles = sp.getSpans(0, textLength, ParagraphStyle.class);

            if (styles.length > 0) {

                boring = false;

            }

            }

            TextLine line = TextLine.obtain();

            line.set(paint, text, 0, length, Layout.DIR_LEFT_TO_RIGHT,

            line.set(paint, text, 0, textLength, Layout.DIR_LEFT_TO_RIGHT,

                    Layout.DIRS_ALL_LEFT_TO_RIGHT, false, null);

            fm.width = (int) Math.ceil(line.metrics(fm));

            TextLine.recycle(line);