tools/src/main/java/org/apache/pdfbox/tools/PDFText2HTML.java [253:315]:
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    private static class FontState
    {
        private final List<String> stateList = new ArrayList<>();
        private final Set<String> stateSet = new HashSet<>();

        /**
         * Pushes new {@link TextPosition TextPositions} into the font state. The state is only
         * preserved correctly for each letter if the number of letters in <code>text</code> matches
         * the number of {@link TextPosition} objects. Otherwise, it's done once for the complete
         * array (just by looking at its first entry).
         *
         * @return A string that contains the text including tag changes caused by its font state.
         */
        public String push(String text, List<TextPosition> textPositions)
        {
            StringBuilder buffer = new StringBuilder();

            if (text.length() == textPositions.size())
            {
                // There is a 1:1 mapping, and we can use the TextPositions directly
                for (int i = 0; i < text.length(); i++)
                {
                    push(buffer, text.charAt(i), textPositions.get(i));
                }
            }
            else if (!text.isEmpty())
            {
                // The normalized text does not match the number of TextPositions, so we'll just
                // have a look at its first entry.
                // TODO change PDFTextStripper.normalize() such that it maintains the 1:1 relation
                if (textPositions.isEmpty())
                {
                    return text;
                }
                push(buffer, text.charAt(0), textPositions.get(0));
                buffer.append(escape(text.substring(1)));
            }
            return buffer.toString();
        }

        /**
         * Closes all open states.
         * @return A string that contains the closing tags of all currently open states.
         */
        public String clear()
        {
            StringBuilder buffer = new StringBuilder();
            closeUntil(buffer, null);
            stateList.clear();
            stateSet.clear();
            return buffer.toString();
        }

        protected String push(StringBuilder buffer, char character, TextPosition textPosition)
        {
            boolean bold = false;
            boolean italics = false;

            PDFontDescriptor descriptor = textPosition.getFont().getFontDescriptor();
            if (descriptor != null)
            {
                bold = isBold(descriptor);
                italics = isItalic(descriptor);
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tools/src/main/java/org/apache/pdfbox/tools/PDFText2Markdown.java [166:230]:
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    private static class FontState
    {
        private final List<String> stateList = new ArrayList<>();
        private final Set<String> stateSet = new HashSet<>();

        /**
         * Pushes new {@link TextPosition TextPositions} into the font state. The state is only
         * preserved correctly for each letter if the number of letters in <code>text</code> matches
         * the number of {@link TextPosition} objects. Otherwise, it's done once for the complete
         * array (just by looking at its first entry).
         *
         * @return A string that contains the text including tag changes caused by its font state.
         */
        public String push(String text, List<TextPosition> textPositions)
        {
            StringBuilder buffer = new StringBuilder();

            if (text.length() == textPositions.size())
            {
                // There is a 1:1 mapping, and we can use the TextPositions directly
                for (int i = 0; i < text.length(); i++)
                {
                    push(buffer, text.charAt(i), textPositions.get(i));
                }
            }
            else if (!text.isEmpty())
            {
                // The normalized text does not match the number of TextPositions, so we'll just
                // have a look at its first entry.
                // TODO change PDFTextStripper.normalize() such that it maintains the 1:1 relation
                if (textPositions.isEmpty())
                {
                    return text;
                }
                push(buffer, text.charAt(0), textPositions.get(0));
                buffer.append(escape(text.substring(1)));
            }
            return buffer.toString();
        }

        /**
         * Closes all open Markdown formatting.
         *
         * @return A string that contains the closing tags of all currently open Markdown
         * formatting.
         */
        public String clear()
        {
            StringBuilder buffer = new StringBuilder();
            closeUntil(buffer, null);
            stateList.clear();
            stateSet.clear();
            return buffer.toString();
        }

        protected String push(StringBuilder buffer, char character, TextPosition textPosition)
        {
            boolean bold = false;
            boolean italics = false;

            PDFontDescriptor descriptor = textPosition.getFont().getFontDescriptor();
            if (descriptor != null)
            {
                bold = isBold(descriptor);
                italics = isItalic(descriptor);
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