From e2dcecec844eef1c88ef7308d552c51c2db4b969 Mon Sep 17 00:00:00 2001
From: acpaquette <acpaquette@usgs.gov>
Date: Fri, 12 Jan 2024 13:39:53 -0700
Subject: [PATCH] Implemented xml read for statistics object

---
 isis/src/base/objs/Statistics/Statistics.cpp | 79 ++++++++++++++++++++
 isis/src/base/objs/Statistics/Statistics.h   |  3 +
 2 files changed, 82 insertions(+)

diff --git a/isis/src/base/objs/Statistics/Statistics.cpp b/isis/src/base/objs/Statistics/Statistics.cpp
index 67c14a4903..7460a88487 100644
--- a/isis/src/base/objs/Statistics/Statistics.cpp
+++ b/isis/src/base/objs/Statistics/Statistics.cpp
@@ -11,6 +11,7 @@ find files of those names at the top level of this repository. **/
 #include <QString>
 #include <QUuid>
 #include <QXmlStreamWriter>
+#include <QXmlStreamReader>
 
 #include <float.h>
 
@@ -31,6 +32,84 @@ namespace Isis {
     Reset(); // initialize
   }
 
+  Statistics::Statistics(QXmlStreamReader *xmlReader, QObject *parent) {   // TODO: does xml stuff need project???
+//    m_id = NULL;
+    SetValidRange();
+    Reset(); // initialize
+    readStatistics(xmlReader);
+  }
+
+  void Statistics::readStatistics(QXmlStreamReader *xmlReader) {
+    Q_ASSERT(xmlReader->name() == "statistics");
+    while (xmlReader->readNextStartElement()) {
+      if (xmlReader->qualifiedName() == "sum") {
+        m_sum = toDouble(xmlReader->readElementText());
+      }
+      else if (xmlReader->qualifiedName() == "sumSquares") {
+        m_sumsum = toDouble(xmlReader->readElementText());
+      }
+      else if (xmlReader->qualifiedName() == "range") {
+        while (xmlReader->readNextStartElement()) {
+          if (xmlReader->qualifiedName() == "minimum") {
+            m_minimum = toDouble(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "maximum") {
+            m_maximum = toDouble(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "validMinimum") {
+            m_validMinimum = toDouble(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "validMaximum") {
+            m_validMaximum = toDouble(xmlReader->readElementText());
+          }
+          else {
+            xmlReader->skipCurrentElement();
+          }
+        }
+      }
+      else if (xmlReader->qualifiedName() == "pixelCounts") {
+        while (xmlReader->readNextStartElement()) {
+          if (xmlReader->qualifiedName() == "totalPixels") {
+            m_totalPixels = toBigInt(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "validPixels") {
+            m_validPixels = toBigInt(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "nullPixels") {
+            m_nullPixels = toBigInt(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "lisPixels") {
+            m_lisPixels = toBigInt(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "lrsPixels") {
+            m_lrsPixels = toBigInt(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "hisPixels") {
+            m_hisPixels = toBigInt(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "hrsPixels") {
+            m_hrsPixels = toBigInt(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "underRangePixels") {
+            m_underRangePixels = toBigInt(xmlReader->readElementText());
+          }
+          else if (xmlReader->qualifiedName() == "overRangePixels") {
+            m_overRangePixels = toBigInt(xmlReader->readElementText());
+          }
+          else {
+            xmlReader->skipCurrentElement();
+          }
+        }
+      }
+      else if (xmlReader->qualifiedName() == "removedData") {
+        m_removedData = toBool(xmlReader->readElementText());
+      }
+      else {
+        xmlReader->skipCurrentElement();
+      }
+    }
+  }
+
   /**
    * Constructs a Statistics object from an input Pvl
    *
diff --git a/isis/src/base/objs/Statistics/Statistics.h b/isis/src/base/objs/Statistics/Statistics.h
index ac93e194e6..ed0ddbf435 100644
--- a/isis/src/base/objs/Statistics/Statistics.h
+++ b/isis/src/base/objs/Statistics/Statistics.h
@@ -17,6 +17,7 @@ find files of those names at the top level of this repository. **/
 class QDataStream;
 class QUuid;
 class QXmlStreamWriter;
+class QXmlStreamReader;
 
 namespace Isis {
   class Project;// ??? does xml stuff need project???
@@ -93,6 +94,8 @@ namespace Isis {
     Q_OBJECT
     public:
       Statistics(QObject *parent = 0);
+      Statistics(QXmlStreamReader *xmlReader, QObject *parent = 0);
+      void readStatistics(QXmlStreamReader *xmlReader);
       Statistics(const PvlGroup &inStats, QObject *parent = 0);
       // TODO: does xml read/write stuff need Project input???
       Statistics(const Statistics &other);