Initial commit

Author: tantonj

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto

.gitignore

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+# Prerequisites
+*.d
+
+# Object files
+*.o
+*.ko
+*.obj
+*.elf
+
+# Linker output
+*.ilk
+*.map
+*.exp
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+
+# Kernel Module Compile Results
+*.mod*
+*.cmd
+.tmp_versions/
+modules.order
+Module.symvers
+Mkfile.old
+dkms.conf

.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [],
+    "console" : "integratedTerminal"
+}

PDFBookletMaker.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="iTextSharp" Version="5.5.13.3" />
+  </ItemGroup>
+
+</Project>

PDFBookletMaker.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.002.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PDFBookletMaker", "PDFBookletMaker.csproj", "{A9B32427-D694-4930-8C1F-A4183CB40552}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{A9B32427-D694-4930-8C1F-A4183CB40552}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A9B32427-D694-4930-8C1F-A4183CB40552}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A9B32427-D694-4930-8C1F-A4183CB40552}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A9B32427-D694-4930-8C1F-A4183CB40552}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {7E273685-F569-41C3-A317-ADEC37B07099}
+	EndGlobalSection
+EndGlobal

Program.cs

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+using System;
+using iTextSharp.text;
+using iTextSharp.text.pdf;
+using Org.BouncyCastle.Asn1.Ocsp;
+
+namespace PDFBookletMaker
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            if(args != null && args.Length == 6) {
+                if(!(args.Contains("-source") || args.Contains("-s")) || !(args.Contains("-dest") || args.Contains("-d")) || !(args.Contains("-bsize") || args.Contains("-b"))) {
+                    printHelp();
+                    return;
+                }
+                string source = "", dest = "";
+                int bookletSize = 0;
+                for(int i = 0; i < 5; i+=2) {
+                    if(args[i].Equals("-source") || args[i].Equals("-s")) {
+                        source = args[i+1];
+                    }
+                    if(args[i].Equals("-dest") || args[i].Equals("-d")) {
+                        dest = args[i+1];
+                    }
+                    if(args[i].Equals("-bsize") || args[i].Equals("-b")) {
+                        try {
+                            bookletSize = Convert.ToInt32(args[i+1]);
+                            if(bookletSize < 4 || bookletSize%4 != 0) {
+                                Console.WriteLine("Booklet Size must be a positive integer and multiple of 4");
+                                return;
+                            }
+                        }
+                        catch {
+                            Console.WriteLine("Booklet Size must be a positive integer and multiple of 4");
+                            return;
+                        }
+                    }
+                }
+                try {
+                    PdfReader reader = new PdfReader(source);
+                    int booklets = reader.NumberOfPages / bookletSize;
+                    int pagesNeeded = reader.NumberOfPages % bookletSize;
+                    pagesNeeded = bookletSize - pagesNeeded;
+                    if(pagesNeeded > 0)
+                        booklets++;
+                    int addToFront = 0;
+                    int addToBack = 0;
+                    if(pagesNeeded % 2 == 0) {
+                        addToFront = pagesNeeded/2;
+                        addToBack = pagesNeeded/2;
+                    }
+                    else {
+                        addToFront = (pagesNeeded-1)/2;
+                        addToBack = ((pagesNeeded-1)/2)+1;
+                    }
+                    Console.WriteLine($"This will create {booklets} booklets");
+                    Console.WriteLine($"{pagesNeeded} pages must be added for a booklet size of {bookletSize}.");
+                    char response = 't';
+                    do {
+                        Console.WriteLine($"Would you like to add {addToFront} blank pages to the Front and {addToBack} blank pages to the Back? (Y/N)");
+                        response = Console.ReadKey().KeyChar;
+                    }while(response != 'y' && response != 'n' && response != 'Y' && response != 'N');
+                    if(response == 'n' || response == 'N') {
+                        Console.WriteLine("\nGoodbye!");
+                        return;
+                    }
+                    else {
+                        Console.WriteLine($"\nConverting {source} to {dest} with a booklet size of {bookletSize}");
+                        string tempfile = $"temp-{Guid.NewGuid().ToString()}.pdf";
+                        using(var tempStream = new FileStream(tempfile, FileMode.Create)) {
+                            PdfStamper stamper = new PdfStamper(reader, tempStream);
+                            for(int j = 0; j < addToFront; j++) {
+                                stamper.InsertPage(0, PageSize.A4);
+                            }
+                            for(int j = 0; j < addToFront; j++) {
+                                stamper.InsertPage(reader.NumberOfPages+1, PageSize.A4);
+                            }
+                            stamper.Close();
+                        }
+                        List<int> pageOrder = new List<int>();
+                        int count = 0;
+                        int n = (booklets * bookletSize)-1;
+                        int i = 0;
+                        do {
+                            pageOrder.Add(n+1);
+                            pageOrder.Add(i+1);
+                            n--;
+                            i++;
+                            pageOrder.Add(i+1);
+                            pageOrder.Add(n+1);
+                            n--;
+                            i++;
+                        }while(i < n);
+                        PdfReader reader2 = new PdfReader(tempfile);
+                        using(var destDocStream = new FileStream(dest, FileMode.Create)) {
+                            var pdfConcat = new PdfConcatenate(destDocStream);
+                            reader2.SelectPages(pageOrder);
+                            pdfConcat.AddPages(reader2);
+                            reader2.Close();
+                            pdfConcat.Close();
+                        }
+                        File.Delete(tempfile);
+                        Console.WriteLine($"resulting pdf can be found at {dest}.");
+                        Console.WriteLine("When printing result use 2 page per side option and duplex printing on short edge");
+                    }
+                    reader.Close();
+                }
+                catch(Exception ex) {
+                    Console.WriteLine(ex.Message);
+                    return;
+                }
+            }
+            else {
+                printHelp();
+            }
+        }
+
+        static private void printHelp() {
+            Console.WriteLine("Invalid Arguments! Must have all 3 parameters");
+            Console.WriteLine("-source (-s)\t\t\tsource document location");
+            Console.WriteLine("-dest (-d)\t\t\tdestination document location");
+            Console.WriteLine("-bsize (-b)\t\t\tbooklet size (multiple of 4)");
+        }
+    }
+}

bin/Debug/net6.0/PDFBookletMaker

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+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v6.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v6.0": {
+      "PDFBookletMaker/1.0.0": {
+        "dependencies": {
+          "iTextSharp": "5.5.13.3"
+        },
+        "runtime": {
+          "PDFBookletMaker.dll": {}
+        }
+      },
+      "BouncyCastle/1.8.9": {
+        "runtime": {
+          "lib/BouncyCastle.Crypto.dll": {
+            "assemblyVersion": "1.8.9.0",
+            "fileVersion": "1.8.20343.1"
+          }
+        }
+      },
+      "iTextSharp/5.5.13.3": {
+        "dependencies": {
+          "BouncyCastle": "1.8.9"
+        },
+        "runtime": {
+          "lib/itextsharp.dll": {
+            "assemblyVersion": "5.5.13.3",
+            "fileVersion": "0.0.0.0"
+          }
+        }
+      }
+    }
+  },
+  "libraries": {
+    "PDFBookletMaker/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    },
+    "BouncyCastle/1.8.9": {
+      "type": "package",
+      "serviceable": true,
+      "sha512": "sha512-axnBgvdD5n+FnEG6efk/tfKuMFru7R/EoISH9zjh319yb3HD24TEHSAbNN/lTRT2ulOGRxDgOsCjkuk08iwWPg==",
+      "path": "bouncycastle/1.8.9",
+      "hashPath": "bouncycastle.1.8.9.nupkg.sha512"
+    },
+    "iTextSharp/5.5.13.3": {
+      "type": "package",
+      "serviceable": true,
+      "sha512": "sha512-vtnMhTEJdZFCkLqaQLjD8aqTBIVKHPrSFuSXnxbLEJlvE/j/l88fvG9wtsejXTmhtErMo0lA9T2LdfdfbwplYw==",
+      "path": "itextsharp/5.5.13.3",
+      "hashPath": "itextsharp.5.5.13.3.nupkg.sha512"
+    }
+  }
+}

bin/Debug/net6.0/PDFBookletMaker.deps.json

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+{
+  "runtimeOptions": {
+    "tfm": "net6.0",
+    "framework": {
+      "name": "Microsoft.NETCore.App",
+      "version": "6.0.0"
+    }
+  }
+}