Added option to split PDF into multiple parts and merge into one PDF

pipeline/defaultWebUIConfigs/split-rotate-auto-rename.json

@@ -6,7 +6,8 @@
       "parameters": {
         "horizontalDivisions": 2,
         "verticalDivisions": 2,
-        "fileInput": "automated"
+        "fileInput": "automated",
+        "merge": false
       }
     },
     {
@@ -30,4 +31,4 @@
   },
   "outputDir": "{outputFolder}",
   "outputFileName": "{filename}"
-}
+}

src/main/java/stirling/software/SPDF/controller/api/SplitPdfBySectionsController.java

@@ -1,16 +1,19 @@
 package stirling.software.SPDF.controller.api;
 
 import java.io.ByteArrayOutputStream;
+import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.UUID;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
 import org.apache.pdfbox.Loader;
 import org.apache.pdfbox.multipdf.LayerUtility;
+import org.apache.pdfbox.multipdf.PDFMergerUtility;
 import org.apache.pdfbox.pdmodel.PDDocument;
 import org.apache.pdfbox.pdmodel.PDPage;
 import org.apache.pdfbox.pdmodel.PDPageContentStream;
@@ -53,8 +56,19 @@ public ResponseEntity<byte[]> splitPdf(@ModelAttribute SplitPdfBySectionsRequest
         // Process the PDF based on split parameters
         int horiz = request.getHorizontalDivisions() + 1;
         int verti = request.getVerticalDivisions() + 1;
-
+        boolean merge = request.isMerge();
         List<PDDocument> splitDocuments = splitPdfPages(sourceDocument, verti, horiz);
+
+        String filename =
+                Filenames.toSimpleFileName(file.getOriginalFilename())
+                        .replaceFirst("[.][^.]+$", "");
+        if (merge) {
+            ByteArrayOutputStream mergedPdf = mergeSplitPdfs(splitDocuments);
+            return WebResponseUtils.bytesToWebResponse(
+                    mergedPdf.toByteArray(),
+                    filename + "_split.pdf",
+                    MediaType.APPLICATION_OCTET_STREAM);
+        }
         for (PDDocument doc : splitDocuments) {
             ByteArrayOutputStream baos = new ByteArrayOutputStream();
             doc.save(baos);
@@ -65,9 +79,6 @@ public ResponseEntity<byte[]> splitPdf(@ModelAttribute SplitPdfBySectionsRequest
         sourceDocument.close();
 
         Path zipFile = Files.createTempFile("split_documents", ".zip");
-        String filename =
-                Filenames.toSimpleFileName(file.getOriginalFilename())
-                        .replaceFirst("[.][^.]+$", "");
         byte[] data;
 
         try (ZipOutputStream zipOut = new ZipOutputStream(Files.newOutputStream(zipFile))) {
@@ -145,4 +156,23 @@ public List<PDDocument> splitPdfPages(
 
         return splitDocuments;
     }
+
+    public ByteArrayOutputStream mergeSplitPdfs(List<PDDocument> splitDocuments)
+            throws IOException {
+        PDFMergerUtility pdfMerger = new PDFMergerUtility();
+        ByteArrayOutputStream mergedPdfOutputStream = new ByteArrayOutputStream();
+
+        for (PDDocument doc : splitDocuments) {
+            String tempFileName = UUID.randomUUID().toString();
+            File tempFile = File.createTempFile(tempFileName, ".pdf");
+            doc.save(tempFile);
+            pdfMerger.addSource(tempFile);
+            tempFile.deleteOnExit();
+        }
+
+        pdfMerger.setDestinationStream(mergedPdfOutputStream);
+        pdfMerger.mergeDocuments(null);
+
+        return mergedPdfOutputStream;
+    }
 }

src/main/java/stirling/software/SPDF/model/api/SplitPdfBySectionsRequest.java

@@ -15,4 +15,7 @@ public class SplitPdfBySectionsRequest extends PDFFile {
 
     @Schema(description = "Number of vertical divisions for each PDF page", example = "2")
     private int verticalDivisions;
+
+    @Schema(description = "Merge the split documents into a single PDF", example = "true")
+    private boolean merge;
 }

src/main/resources/messages_ar_AR.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_bg_BG.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_ca_CA.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_de_DE.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertikale Teiler
 split-by-sections.horizontal.placeholder=Anzahl horizontaler Teiler eingeben
 split-by-sections.vertical.placeholder=Anzahl vertikaler Teiler eingeben
 split-by-sections.submit=PDF teilen
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Lizenzen

src/main/resources/messages_el_GR.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_en_GB.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_en_US.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_es_ES.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Divisiones Verticales
 split-by-sections.horizontal.placeholder=Introduzca el número de divisiones horizontales
 split-by-sections.vertical.placeholder=Introduzca el número de divisiones verticales
 split-by-sections.submit=Dividir PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licencias

src/main/resources/messages_eu_ES.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_fr_FR.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Divisions verticales
 split-by-sections.horizontal.placeholder=Saisir le nombre de divisions horizontales
 split-by-sections.vertical.placeholder=Entrer le nombre de divisions verticales
 split-by-sections.submit=Diviser le PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licences

src/main/resources/messages_hi_IN.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=लंबवत विभाजन
 split-by-sections.horizontal.placeholder=क्षैतिज विभाजन की संख्या दर्ज करें
 split-by-sections.vertical.placeholder=लंबवत विभाजन की संख्या दर्ज करें
 split-by-sections.submit=PDF को विभाजित करें
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_hu_HU.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vízszintes szakaszok
 split-by-sections.horizontal.placeholder=Adja meg a vízszintes szakaszok számát
 split-by-sections.vertical.placeholder=Adja meg a függőleges szakaszok számát
 split-by-sections.submit=Felosztás
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_id_ID.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Pembagian Vertikal
 split-by-sections.horizontal.placeholder=Input angka untuk pembagian horizontal
 split-by-sections.vertical.placeholder=Input angka untuk pembagian vertikal
 split-by-sections.submit=Pisahkan PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_it_IT.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Divisioni verticali
 split-by-sections.horizontal.placeholder=Inserire il numero di divisioni orizzontali
 split-by-sections.vertical.placeholder=Inserire il numero di divisioni verticali
 split-by-sections.submit=Dividi PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenze

src/main/resources/messages_ja_JP.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=垂直方向
 split-by-sections.horizontal.placeholder=水平方向の分割数を選択
 split-by-sections.vertical.placeholder=垂直方向の分割数を選択
 split-by-sections.submit=分割
-
+split-by-sections.merge=1 つの PDF に結合するかどうか
 
 #licenses
 licenses.nav=ライセンス

src/main/resources/messages_ko_KR.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_nl_NL.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Verticale secties
 split-by-sections.horizontal.placeholder=Voer het aantal horizontale secties in
 split-by-sections.vertical.placeholder=Voer het aantal verticale secties in
 split-by-sections.submit=PDF splitsen
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenties

src/main/resources/messages_pl_PL.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_pt_BR.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_pt_PT.properties

@@ -958,7 +958,7 @@ split-by-sections.vertical.label=Divisões Verticais
 split-by-sections.horizontal.placeholder=Introduza o número de divisões horizontais
 split-by-sections.vertical.placeholder=Introduza o número de divisões verticais
 split-by-sections.submit=Dividir PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenças

src/main/resources/messages_ro_RO.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_ru_RU.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_sr_LATN_RS.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertikalne podele
 split-by-sections.horizontal.placeholder=Unesite broj horizontalnih podele
 split-by-sections.vertical.placeholder=Unesite broj vertikalnih podele
 split-by-sections.submit=Razdvoji PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_sv_SE.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_tr_TR.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=Vertical Divisions
 split-by-sections.horizontal.placeholder=Enter number of horizontal divisions
 split-by-sections.vertical.placeholder=Enter number of vertical divisions
 split-by-sections.submit=Split PDF
-
+split-by-sections.merge=Merge Into One PDF
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_zh_CN.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=垂直分割
 split-by-sections.horizontal.placeholder=输入水平分割数
 split-by-sections.vertical.placeholder=输入垂直分割数
 split-by-sections.submit=分割PDF
-
+split-by-sections.merge=是否合并为一个pdf
 
 #licenses
 licenses.nav=Licenses

src/main/resources/messages_zh_TW.properties

@@ -960,7 +960,7 @@ split-by-sections.vertical.label=垂直劃分
 split-by-sections.horizontal.placeholder=輸入水平劃分的數量
 split-by-sections.vertical.placeholder=輸入垂直劃分的數量
 split-by-sections.submit=分割 PDF
-
+split-by-sections.merge=是否合併為一個pdf
 
 #licenses
 licenses.nav=Licenses

src/main/resources/templates/split-pdf-by-sections.html

@@ -23,6 +23,9 @@ <h2 th:text="#{split-by-sections.header}"></h2>
                   <label for="verticalDivisions" th:text="#{split-by-sections.vertical.label}">Vertical Divisions</label>
                   <input type="number" id="verticalDivisions" name="verticalDivisions" class="form-control" min="0" max="300" required value="1" th:placeholder="#{split-by-sections.vertical.placeholder}">
                   <br>
+                  <label for="verticalDivisions" th:text="#{split-by-sections.merge}">merge PDFs into one</label>
+                  <input type="checkbox" id="merge" name="merge" th:placeholder="#{split-by-sections.merge}">
+                  <br>
                   <div id="pdfVisualAid" class="pdf-visual-aid"></div>
                   <script>
                     function updateVisualAid() {