ENH: Updates array names to have padding digits for SplitAtributeArray.

Allows the names to show in correct order when viewed in a user interface.

Signed-off-by: Michael Jackson <mike.jackson@bluequartz.net>

src/Plugins/SimplnxCore/src/SimplnxCore/Filters/SplitAttributeArrayFilter.cpp

@@ -38,7 +38,7 @@ Uuid SplitAttributeArrayFilter::uuid() const
 //------------------------------------------------------------------------------
 std::string SplitAttributeArrayFilter::humanName() const
 {
-  return "Split Multicomponent Attribute Array";
+  return "Split Multi component Attribute Array";
 }
 
 //------------------------------------------------------------------------------
@@ -119,7 +119,7 @@ IFilter::PreflightResult SplitAttributeArrayFilter::preflightImpl(const DataStru
             -65402, fmt::format("Selected component '{}' is not a valid component. Input array at path '{}' only has {} components, please choose a component number between 0 and {} to extract.",
                                 comp, pInputArrayPath.toString(), numComponents, numComponents - 1)}})};
       }
-      std::string arrayName = pInputArrayPath.getTargetName() + pPostfix + StringUtilities::number(compIndex);
+      std::string arrayName = pInputArrayPath.getTargetName() + pPostfix + StringUtilities::GenerateIndexString(compIndex, numComponents - 1);
       DataPath newArrayPath = pInputArrayPath.replaceName(arrayName);
       resultOutputActions.value().appendAction(std::make_unique<CreateArrayAction>(inputArray->getDataType(), tdims, cdims, newArrayPath));
     }
@@ -128,7 +128,7 @@ IFilter::PreflightResult SplitAttributeArrayFilter::preflightImpl(const DataStru
   {
     for(usize i = 0; i < numComponents; i++)
     {
-      std::string arrayName = pInputArrayPath.getTargetName() + pPostfix + StringUtilities::number(i);
+      std::string arrayName = pInputArrayPath.getTargetName() + pPostfix + StringUtilities::GenerateIndexString(i, numComponents - 1);
       DataPath newArrayPath = pInputArrayPath.replaceName(arrayName);
       resultOutputActions.value().appendAction(std::make_unique<CreateArrayAction>(inputArray->getDataType(), tdims, cdims, newArrayPath));
     }

src/simplnx/Utilities/StringUtilities.hpp

@@ -40,6 +40,8 @@
 #include <algorithm>
 #include <array>
 #include <cctype>
+#include <iomanip>
+#include <iostream>
 #include <limits>
 #include <sstream>
 #include <string>
@@ -509,4 +511,31 @@ inline std::vector<BestMatchType> FindBestMatches(const std::vector<std::string>
   // return bestPairs;
   return bestMatches;
 }
+
+/**
+ * @brief Creates a '0' padded string from a number based on maxIndex which dictates how many zeros there will be.
+ * @param index The index in the string
+ * @param maxIndex The max Index which determines the number of padding digits.
+ * @return String
+ */
+inline std::string GenerateIndexString(int32 index, int32 maxIndex)
+{
+  std::string numStr = fmt::format("{}", index);
+
+  if(maxIndex >= 10)
+  {
+    int mag = 0;
+    int max = maxIndex;
+    while(max > 0)
+    {
+      mag++;
+      max = max / 10;
+    }
+    std::stringstream ss; // Create a QTextStream to set up the padding
+    ss << std::setw(mag) << std::setfill('0') << index;
+    numStr = ss.str();
+  }
+  return numStr;
+}
+
 } // namespace nx::core::StringUtilities