try to fix wrong space recognition in StyledText

gradle.properties

@@ -1,3 +1,3 @@
 group = org.xbib.graphics
 name = graphics
-version = 5.5.4
+version = 5.5.5

graphics-pdfbox-layout/src/main/java/org/xbib/graphics/pdfbox/layout/text/StyledText.java

@@ -5,6 +5,7 @@ import java.awt.Color;
 import java.io.IOException;
 import java.util.logging.Level;
 import java.util.logging.Logger;
+import java.util.regex.Pattern;
 
 /**
  * Base class representing drawable text styled with font, size, color etc.
@@ -190,7 +191,7 @@ public class StyledText implements TextFragment {
         try {
             return fontDescriptor.getSize() * fontDescriptor.getSelectedFont(text).getStringWidth(text) / 1000;
         } catch (Exception e) {
-            logger.log(Level.WARNING, "text = '" + text + "' " + e.getMessage(), e);
+            logger.log(Level.SEVERE, "text = '" + text + "' " + e.getMessage(), e);
             return 0f;
         }
     }
@@ -199,7 +200,7 @@ public class StyledText implements TextFragment {
         if (string == null) {
             return null;
         }
-        if (!string.contains("  ")) {
+        if (!spaces.matcher(string).find()) {
             return string;
         }
         return string.replaceAll("\\s+", " ");
@@ -212,4 +213,6 @@ public class StyledText implements TextFragment {
                 + ", leftMargin=" + leftMargin + ", rightMargin=" + rightMargin
                 + ", baselineOffset=" + baselineOffset + ",rotation=" + rotation + "]";
     }
+
+    private static final Pattern spaces = Pattern.compile("\\s+");
 }

graphics-pdfbox-layout/src/main/java/org/xbib/graphics/pdfbox/layout/text/TextFlow.java

@@ -123,9 +123,9 @@ public class TextFlow implements TextSequence, WidthRespecting {
      * @return the removed fragment (if any).
      */
     public TextFragment removeLast() {
-        if (text.size() > 0) {
+        if (!text.isEmpty()) {
             clearCache();
-            return text.remove(text.size() - 1);
+            return text.removeLast();
         }
         return null;
     }
@@ -134,9 +134,9 @@ public class TextFlow implements TextSequence, WidthRespecting {
      * @return the last added fragment (if any).
      */
     public TextFragment getLast() {
-        if (text.size() > 0) {
+        if (!text.isEmpty()) {
             clearCache();
-            return text.get(text.size() - 1);
+            return text.getLast();
         }
         return null;
     }

graphics-pdfbox-layout/src/main/java/org/xbib/graphics/pdfbox/layout/text/TextSequenceUtil.java

@@ -60,15 +60,13 @@ public class TextSequenceUtil {
         List<TextLine> lines = getLines(wrapped);
         Paragraph first = new Paragraph();
         Paragraph tail = new Paragraph();
-        if (text instanceof TextFlow) {
+        if (text instanceof TextFlow flow) {
-            TextFlow flow = (TextFlow) text;
             first.setMaxWidth(flow.getMaxWidth());
             first.setLineSpacing(flow.getLineSpacing());
             tail.setMaxWidth(flow.getMaxWidth());
             tail.setLineSpacing(flow.getLineSpacing());
         }
-        if (text instanceof Paragraph) {
+        if (text instanceof Paragraph paragraph) {
-            Paragraph paragraph = (Paragraph) text;
             first.setAlignment(paragraph.getAlignment());
             first.setApplyLineSpacingToFirstLine(paragraph.isApplyLineSpacingToFirstLine());
             tail.setAlignment(paragraph.getAlignment());
@@ -215,13 +213,11 @@ public class TextSequenceUtil {
         } else {
             ReplacedWhitespace whitespace = new ReplacedWhitespace(
                     text.substring(0, splitIndex), word.getFontDescriptor());
-            StyledText newWord = null;
+            StyledText newWord;
             if (word instanceof StyledText) {
-                newWord = ((StyledText) word).inheritAttributes(text
+                newWord = ((StyledText) word).inheritAttributes(text.substring(splitIndex));
-                        .substring(splitIndex));
             } else {
-                newWord = new StyledText(text.substring(splitIndex),
+                newWord = new StyledText(text.substring(splitIndex), word.getFontDescriptor(), word.getColor());
-                        word.getFontDescriptor(), word.getColor());
             }
             return new TextFragment[]{newWord, whitespace};
         }
@@ -323,25 +319,19 @@ public class TextSequenceUtil {
 
         float leftMargin = 0;
         float rightMargin = 0;
-        if (word instanceof StyledText) {
+        if (word instanceof StyledText styledText) {
-            StyledText styledText = (StyledText) word;
             leftMargin = styledText.getLeftMargin();
             rightMargin = styledText.getRightMargin();
         }
-
         Pair<String> brokenWord = WordBreakerFactory.getWorkBreaker().breakWord(word.getText(), word.getFontDescriptor(),
                         remainingLineWidth - leftMargin, breakHard);
         if (brokenWord == null) {
             return null;
         }
-
         // break at calculated index
-        TextFragment head = deriveFromExisting(word,
+        TextFragment head = deriveFromExisting(word, brokenWord.getFirst(), leftMargin, 0);
-                brokenWord.getFirst(), leftMargin, 0);
+        TextFragment tail = deriveFromExisting(word, brokenWord.getSecond(), 0, rightMargin);
-        TextFragment tail = deriveFromExisting(word,
+        return new Pair<>(head, tail);
-                brokenWord.getSecond(), 0, rightMargin);
-
-        return new Pair<TextFragment>(head, tail);
     }
 
     /**