thymeleaf#604 add functions for currency formatting

fibsifan · Apr 3, 2021 · 5dacfbd · 5dacfbd
1 parent 309b9f2
commit 5dacfbd
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Showing 3 changed files with 62 additions and 2 deletions.
diff --git a/ChangeLog.txt b/ChangeLog.txt
@@ -24,6 +24,7 @@
 - Added "Automatic-Module-Name: thymeleaf" to MANIFEST.MF for Java 9+ JPMS.
 - Updated AttoParser dependency to 2.0.5.RELEASE
 - Updated Unbescape dependency to 1.1.6.RELEASE
+- Added `Numbers` functions to format numbers with a chosen currency.
 
 
 3.0.9

diff --git a/src/main/java/org/thymeleaf/expression/Numbers.java b/src/main/java/org/thymeleaf/expression/Numbers.java
@@ -20,6 +20,7 @@
 package org.thymeleaf.expression;
 
 import java.util.ArrayList;
+import java.util.Currency;
 import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Locale;
@@ -344,6 +345,17 @@ public String formatCurrency(final Number target) {
             throw new TemplateProcessingException("Error formatting currency", e);
         }
     }
+
+    public String formatCurrency(final Number target, final Currency currency) {
+        if (target == null) {
+            return null;
+        }
+        try {
+            return NumberUtils.formatCurrency(target, this.locale, currency);
+        } catch (final Exception e) {
+            throw new TemplateProcessingException("Error formatting currency", e);
+        }
+    }
 
     public String[] arrayFormatCurrency(final Object[] target) {
         if (target == null) {
@@ -355,7 +367,18 @@ public String[] arrayFormatCurrency(final Object[] target) {
         }
         return result;
     }
-
+
+    public String[] arrayFormatCurrency(final Object[] target, final Currency currency) {
+        if(target == null) {
+            return null;
+        }
+        final String[] result = new String[target.length];
+        for (int i = 0; i < target.length; i++) {
+            result[i] = formatCurrency((Number) target[i], currency);
+        }
+        return result;
+    }
+
     public List<String> listFormatCurrency(final List<? extends Number> target) {
         if (target == null) {
             return null;
@@ -366,7 +389,18 @@ public List<String> listFormatCurrency(final List<? extends Number> target) {
         }
         return result;
     }
-
+
+    public List<String> listFormatCurrency(final List<? extends Number> target, final Currency currency) {
+        if (target == null) {
+            return null;
+        }
+        final List<String> result = new ArrayList<String>(target.size() + 2);
+        for (final Number element : target) {
+            result.add(formatCurrency(element, currency));
+        }
+        return result;
+    }
+
     public Set<String> setFormatCurrency(final Set<? extends Number> target) {
         if (target == null) {
             return null;
@@ -378,6 +412,17 @@ public Set<String> setFormatCurrency(final Set<? extends Number> target) {
         return result;
     }
 
+    public Set<String> setFormatCurrency(final Set<? extends Number> target, final Currency currency) {
+        if (target == null) {
+            return null;
+        }
+        final Set<String> result = new LinkedHashSet<String>(target.size() + 2);
+        for (final Number element : target) {
+            result.add(formatCurrency(element, currency));
+        }
+        return result;
+    }
+
 
 
 

diff --git a/src/main/java/org/thymeleaf/util/NumberUtils.java b/src/main/java/org/thymeleaf/util/NumberUtils.java
@@ -23,6 +23,7 @@
 import java.text.DecimalFormatSymbols;
 import java.text.NumberFormat;
 import java.util.ArrayList;
+import java.util.Currency;
 import java.util.List;
 import java.util.Locale;
 
@@ -287,6 +288,19 @@ public static String formatCurrency(final Number target, final Locale locale) {
         return format.format(target);
     }
 
+    public static String formatCurrency(final Number target, final Locale locale, final Currency currency) {
+        Validate.notNull(locale, "Locale cannot be null");
+        if(target == null) {
+            return null;
+        }
+
+        NumberFormat format = NumberFormat.getCurrencyInstance(locale);
+        format.setCurrency(currency);
+        format.setMaximumFractionDigits(currency.getDefaultFractionDigits());
+
+        return format.format(target);
+    }
+
     /**
      * Formats a number as a percentage value.
      *