Make lower/upper casing locale independent

DEVSIX-9092

Author: vitali-pr

src/main/java/com/itextpdf/html2pdf/attach/impl/tags/HTagWorker.java

@@ -22,6 +22,7 @@ This file is part of the iText (R) project.
  */
 package com.itextpdf.html2pdf.attach.impl.tags;
 
+import com.itextpdf.commons.utils.StringNormalizer;
 import com.itextpdf.html2pdf.attach.ProcessorContext;
 import com.itextpdf.layout.tagging.IAccessibleElement;
 import com.itextpdf.layout.IPropertyContainer;
@@ -42,7 +43,7 @@ public class HTagWorker extends DivTagWorker {
      */
     public HTagWorker(IElementNode element, ProcessorContext context) {
         super(element, context);
-        this.role = element.name().toUpperCase();
+        this.role = StringNormalizer.toUpperCase(element.name());
     }
 
     @Override

src/main/java/com/itextpdf/html2pdf/attach/impl/tags/MetaTagWorker.java

@@ -22,6 +22,7 @@ This file is part of the iText (R) project.
  */
 package com.itextpdf.html2pdf.attach.impl.tags;
 
+import com.itextpdf.commons.utils.StringNormalizer;
 import com.itextpdf.html2pdf.attach.ITagWorker;
 import com.itextpdf.html2pdf.attach.ProcessorContext;
 import com.itextpdf.kernel.pdf.PdfDocumentInfo;
@@ -52,7 +53,7 @@ public void processEnd(IElementNode element, ProcessorContext context) {
         // Note that charset and http-equiv attributes are processed on DataUtil#parseByteData(ByteBuffer, String, String, Parser) level.
         String name = element.getAttribute(AttributeConstants.NAME);
         if (null != name) {
-            name = name.toLowerCase();
+            name = StringNormalizer.toLowerCase(name);
             String content = element.getAttribute(AttributeConstants.CONTENT);
             // although iText do not visit head during processing html to elements
             // meta tag can by accident be presented in body section and that shouldn't cause NPE

src/main/java/com/itextpdf/html2pdf/attach/util/WaitingInlineElementsHelper.java

@@ -93,6 +93,7 @@ public WaitingInlineElementsHelper(String whiteSpace, String textTransform) {
     public void add(String text) {
         text = WhiteSpaceUtil.processWhitespaces(text, keepLineBreaks, collapseSpaces);
 
+        // Here we intentionally use locale dependent toLowerCase/toUpperCase
         if (CssConstants.UPPERCASE.equals(textTransform)) {
             text = text.toUpperCase();
         } else if (CssConstants.LOWERCASE.equals(textTransform)) {

src/main/java/com/itextpdf/html2pdf/css/apply/util/TransformationApplierUtil.java

@@ -22,6 +22,7 @@ This file is part of the iText (R) project.
  */
 package com.itextpdf.html2pdf.css.apply.util;
 
+import com.itextpdf.commons.utils.StringNormalizer;
 import com.itextpdf.html2pdf.attach.ProcessorContext;
 import com.itextpdf.html2pdf.css.CssConstants;
 import com.itextpdf.layout.IPropertyContainer;
@@ -58,7 +59,7 @@ private TransformationApplierUtil() {
     public static void applyTransformation(Map<String, String> cssProps, ProcessorContext context, IPropertyContainer element) {
         String transformationFunction;
         if (cssProps.get(CssConstants.TRANSFORM) != null)
-            transformationFunction = cssProps.get(CssConstants.TRANSFORM).toLowerCase();
+            transformationFunction = StringNormalizer.toLowerCase(cssProps.get(CssConstants.TRANSFORM));
         else
             return;
         String[] components = transformationFunction.split("\\)");

src/main/java/com/itextpdf/html2pdf/html/HtmlUtils.java

@@ -22,6 +22,7 @@ This file is part of the iText (R) project.
  */
 package com.itextpdf.html2pdf.html;
 
+import com.itextpdf.commons.utils.StringNormalizer;
 import com.itextpdf.html2pdf.css.CssConstants;
 import com.itextpdf.html2pdf.css.resolve.func.counter.CounterDigitsGlyphStyle;
 import com.itextpdf.kernel.numbering.ArmenianNumbering;
@@ -162,15 +163,15 @@ public static String getAllNumberGlyphsForStyle(CounterDigitsGlyphStyle glyphSty
             case CIRCLE:
                 return CIRCLE_SYMBOL;
             case UPPER_ALPHA_AND_LATIN:
-                return LATIN_NUMERALS.toUpperCase();
+                return StringNormalizer.toUpperCase(LATIN_NUMERALS);
             case LOWER_ALPHA_AND_LATIN:
                 return LATIN_NUMERALS;
             case LOWER_GREEK:
                 return GREEK_NUMERALS;
             case LOWER_ROMAN:
                 return ROMAN_NUMERALS;
             case UPPER_ROMAN:
-                return ROMAN_NUMERALS.toUpperCase();
+                return StringNormalizer.toUpperCase(ROMAN_NUMERALS);
             case GEORGIAN:
                 return GEORGIAN_NUMERALS;
             case ARMENIAN:

src/test/java/com/itextpdf/html2pdf/element/InputTest.java

@@ -22,6 +22,7 @@ This file is part of the iText (R) project.
  */
 package com.itextpdf.html2pdf.element;
 
+import com.itextpdf.commons.utils.StringNormalizer;
 import com.itextpdf.forms.form.element.InputField;
 import com.itextpdf.forms.logs.FormsLogMessageConstants;
 import com.itextpdf.html2pdf.ConverterProperties;
@@ -377,9 +378,9 @@ private void runPDFATest(String name) throws IOException, InterruptedException {
     private static class CustomTextInputTagWorkerFactory extends DefaultTagWorkerFactory {
         @Override
         public ITagWorker getCustomTagWorker(IElementNode tag, ProcessorContext context) {
-            switch (tag.name().toLowerCase()) {
+            switch (StringNormalizer.toLowerCase(tag.name())) {
                 case "input":
-                    switch (tag.getAttribute("type").toLowerCase()) {
+                    switch (StringNormalizer.toLowerCase(tag.getAttribute("type"))) {
                         case "text":
                             Map<String, String> map = new HashMap<String, String>();
                             map.put("page-break-inside", "avoid");