From f7a668371769a7b4c176e57626f23314e3838e1c Mon Sep 17 00:00:00 2001
From: Abyss777 <abyss@fox5.ru>
Date: Thu, 16 Mar 2017 10:30:19 +0500
Subject: Share code in excel reports

---
 src/org/traccar/reports/ReportUtils.java | 38 ++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

(limited to 'src/org/traccar/reports/ReportUtils.java')

diff --git a/src/org/traccar/reports/ReportUtils.java b/src/org/traccar/reports/ReportUtils.java
index ed97c6857..e2a743b2f 100644
--- a/src/org/traccar/reports/ReportUtils.java
+++ b/src/org/traccar/reports/ReportUtils.java
@@ -16,14 +16,27 @@
  */
 package org.traccar.reports;
 
+import org.apache.velocity.tools.generic.DateTool;
+import org.jxls.area.Area;
+import org.jxls.builder.xls.XlsCommentAreaBuilder;
+import org.jxls.common.CellRef;
+import org.jxls.formula.StandardFormulaProcessor;
+import org.jxls.transform.Transformer;
+import org.jxls.transform.poi.PoiTransformer;
+import org.jxls.util.TransformerFactory;
 import org.traccar.Context;
 import org.traccar.helper.Log;
 import org.traccar.model.Position;
 
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
 import java.math.BigDecimal;
 import java.math.RoundingMode;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.List;
+import java.util.Locale;
 import java.util.TimeZone;
 
 public final class ReportUtils {
@@ -96,4 +109,29 @@ public final class ReportUtils {
         return "-";
     }
 
+    public static org.jxls.common.Context initializeContext(long userId) {
+        org.jxls.common.Context jxlsContext = PoiTransformer.createInitialContext();
+        jxlsContext.putVar("distanceUnit", getDistanceUnit(userId));
+        jxlsContext.putVar("speedUnit", getSpeedUnit(userId));
+        jxlsContext.putVar("webUrl", Context.getVelocityEngine().getProperty("web.url"));
+        jxlsContext.putVar("dateTool", new DateTool());
+        jxlsContext.putVar("timezone", getTimezone(userId));
+        jxlsContext.putVar("locale", Locale.getDefault());
+        jxlsContext.putVar("bracketsRegex", "[\\{\\}\"]");
+        return jxlsContext;
+    }
+
+    public static void processTemplateWithSheets(InputStream templateStream, OutputStream targetStream,
+            org.jxls.common.Context jxlsContext) throws IOException {
+        Transformer transformer = TransformerFactory.createTransformer(templateStream, targetStream);
+        List<Area> xlsAreas = new XlsCommentAreaBuilder(transformer).build();
+        for (Area xlsArea : xlsAreas) {
+            xlsArea.applyAt(new CellRef(xlsArea.getStartCellRef().getCellName()), jxlsContext);
+            xlsArea.setFormulaProcessor(new StandardFormulaProcessor());
+            xlsArea.processFormulas();
+        }
+        transformer.deleteSheet(xlsAreas.get(0).getStartCellRef().getSheetName());
+        transformer.write();
+    }
+
 }
-- 
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