/// <inheritdoc/>
public async Task <IPDFtkResult <byte[]> > FillFormAsync(string pdfFilePath,
IReadOnlyDictionary <string, string> fieldData,
bool flatten,
bool dropXfa)
{
using var outputFile = TempPDFtkFile.Create();
using var xfdfFile = await _xfdfGenerator.CreateXfdfFile(fieldData);
var args = new List <string>(new[]
{
pdfFilePath,
"fill_form",
xfdfFile.TempFileName,
"output",
outputFile.TempFileName
});
if (flatten)
{
args.Add("flatten");
}
if (dropXfa)
{
args.Add("drop_xfa");
}
var executeProcessResult = await _pdftkProcess.ExecuteAsync(args.ToArray());
return(await ResolveSingleFileExecutionResultAsync(executeProcessResult, outputFile));
}
/// <summary>
/// Attaches files to a PDF file.
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="pdfFile">A stream of the PDF file input.</param>
/// <param name="attachments">Streams of files to attach to the PDF.</param>
/// <param name="page">The page to attach the given files, if null then files are attached to the document level.</param>
/// <returns>A result with the files attached to the PDF.</returns>
public static async Task <IPDFtkResult <byte[]> > AttachFiles(this IPDFtk pdftk, Stream pdfFile, IEnumerable <KeyValuePair <string, Stream> > attachments, int?page = null)
{
using var inputFile = await TempPDFtkFile.FromAsync(pdfFile);
using var attachmentFiles = await TempPDFtkFiles.FromAsync(attachments);
return(await pdftk.AttachFiles(inputFile.TempFileName, attachmentFiles.FileNames, page));
}
/// <summary>
/// Replaces a range of pages in a PDF with another PDF
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="pdfFile">A stream of the PDF file input.</param>
/// <param name="startPage">The page to replace</param>
/// <param name="endPage">The page to replace</param>
/// <param name="replacementPdfFile">A stream of the PDF file to replace the page with.</param>
/// <returns>A result with the PDF form filled as a byte array.</returns>
public static async Task <IPDFtkResult <byte[]> > ReplacePage(this IPDFtk pdftk, Stream pdfFile, int startPage, int endPage, Stream replacementPdfFile)
{
using var inputFile = await TempPDFtkFile.FromAsync(pdfFile);
using var replacementFile = await TempPDFtkFile.FromAsync(replacementPdfFile);
return(await pdftk.ReplacePages(inputFile.TempFileName, startPage, endPage, replacementFile.TempFileName));
}
/// <summary>
/// Applies a stamp to a PDF file.
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="pdfFile">A stream of the PDF file input.</param>
/// <param name="stampPdfFile">A stream of the PDF stamp to apply.</param>
/// <returns>A result with the stamped PDF file.</returns>
public static async Task <IPDFtkResult <byte[]> > StampAsync(this IPDFtk pdftk, Stream pdfFile, Stream stampPdfFile)
{
using var inputFile = await TempPDFtkFile.FromAsync(pdfFile);
using var stampFile = await TempPDFtkFile.FromAsync(stampPdfFile);
return(await pdftk.StampAsync(inputFile.TempFileName, stampFile.TempFileName));
}
/// <summary>
/// Replaces a page in a PDF with another PDF
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="fileBytes">A byte array of the PDF file input.</param>
/// <param name="page">The page to replace</param>
/// <param name="replacementFileBytes">A byte array of the PDF file to replace the page with.</param>
/// <returns>A result with the PDF form filled as a byte array.</returns>
public static async Task <IPDFtkResult <byte[]> > ReplacePage(this IPDFtk pdftk, byte[] fileBytes, int page, byte[] replacementFileBytes)
{
using var inputFile = await TempPDFtkFile.FromAsync(fileBytes);
using var replacementFile = await TempPDFtkFile.FromAsync(replacementFileBytes);
return(await pdftk.ReplacePage(inputFile.TempFileName, page, replacementFile.TempFileName));
}
/// <inheritdoc/>
public async Task <IPDFtkResult <byte[]> > ConcatAsync(IEnumerable <string> filePaths)
{
using var outputFile = TempPDFtkFile.Create();
var inputFileNames = string.Join(" ", filePaths);
var executeProcessResult =
await _pdftkProcess.ExecuteAsync(inputFileNames, "cat", "output", outputFile.TempFileName);
return(await ResolveSingleFileExecutionResultAsync(executeProcessResult, outputFile));
}
/// <inheritdoc/>
public async Task <IPDFtkResult <byte[]> > StampAsync(string pdfFilePath, string stampPdfFilePath)
{
using var outputFile = TempPDFtkFile.Create();
var executeProcessResult = await _pdftkProcess.ExecuteAsync(pdfFilePath,
"multistamp", stampPdfFilePath,
"output", outputFile.TempFileName);
return(await ResolveSingleFileExecutionResultAsync(executeProcessResult, outputFile));
}
/// <summary>
/// Fill a PDF form with given data and returns the output PDF as a byte array.
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="pdfFile">A stream of the PDF file input.</param>
/// <param name="fieldData">A key value pair of form field name to value.</param>
/// <param name="flatten">If the final PDF should be flattened.</param>
/// <param name="dropXfa">If the XFA data should be omitted from final PDF.</param>
/// <returns>A result with the PDF form filled as a byte array.</returns>
public static async Task <IPDFtkResult <byte[]> > FillFormAsync(this IPDFtk pdftk, Stream pdfFile,
IReadOnlyDictionary <string, string> fieldData,
bool flatten,
bool dropXfa)
{
using var inputFile = await TempPDFtkFile.FromAsync(pdfFile);
return(await pdftk.FillFormAsync(inputFile.TempFileName,
fieldData,
flatten,
dropXfa));
}
/// <inheritdoc/>
public async Task <IPDFtkResult <byte[]> > GetPagesAsync(string inputFile, params int[] pages)
{
using var outputFile = TempPDFtkFile.Create();
var pageRanges = GetPageRangeArgs(pages);
var executeProcessResult = await _pdftkProcess.ExecuteAsync(inputFile, "cat",
string.Join(" ", pageRanges),
"output", outputFile.TempFileName);
return(await ResolveSingleFileExecutionResultAsync(executeProcessResult, outputFile));
}
public static async Task <TempPDFtkFile> FromAsync(Stream stream)
{
var tempPdFtkFile = new TempPDFtkFile();
#if NETSTANDARD2_0
using var openWrite = File.OpenWrite(tempPdFtkFile.TempFileName);
#else
await using var openWrite = File.OpenWrite(tempPdFtkFile.TempFileName);
#endif
await stream.CopyToAsync(openWrite);
return(tempPdFtkFile);
}
/// <summary>
/// Merges multiple PDFs into one single PDF and returns the output PDF as a byte array.
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="pdfFiles">An enumeration of streams of the PDF files to merge.</param>
/// <returns>A result with the PDF as a byte array of the merged PDFs.</returns>
public static async Task <IPDFtkResult <byte[]> > ConcatAsync(this IPDFtk pdftk, IEnumerable <Stream> pdfFiles)
{
var inputFiles = await Task.WhenAll(
pdfFiles.Select(async file => await TempPDFtkFile.FromAsync(file))
.ToList());
try
{
return(await pdftk.ConcatAsync(inputFiles.Select(x => x.TempFileName)));
}
finally
{
inputFiles.Dispose();
}
}
public static async Task <TempPDFtkFile> FromAsync(byte[] pdfFileBytes)
{
var tempPdFtkFile = new TempPDFtkFile();
if (pdfFileBytes is not null)
{
#if NETSTANDARD2_0
File.WriteAllBytes(tempPdFtkFile.TempFileName, pdfFileBytes);
await Task.CompletedTask;
#else
await File.WriteAllBytesAsync(tempPdFtkFile.TempFileName, pdfFileBytes);
#endif
}
return(tempPdFtkFile);
}
private static async Task <IPDFtkResult <byte[]> > ResolveSingleFileExecutionResultAsync(
ExecutionResult executeProcessResult,
TempPDFtkFile outputFile)
{
var bytes = Array.Empty <byte>();
if (executeProcessResult.Success)
{
#if NETSTANDARD2_0
bytes = File.ReadAllBytes(outputFile.TempFileName);
await Task.CompletedTask;
#else
bytes = await File.ReadAllBytesAsync(outputFile.TempFileName);
#endif
}
return(new PDFtkResult <byte[]>(executeProcessResult, bytes));
}
internal async Task <TempPDFtkFile> CreateXfdfFile(IReadOnlyDictionary <string, string> fieldData)
{
var inputFile = TempPDFtkFile.Create();
var xmlWriterSettings = new XmlWriterSettings()
{
Async = true
};
#if NETSTANDARD2_1 || NETSTANDARD2_0
using var xmlWriter =
XmlWriter.Create(inputFile.TempFileName, xmlWriterSettings);
#else
await using var xmlWriter =
XmlWriter.Create(inputFile.TempFileName, xmlWriterSettings);
#endif
await WriteXmlDocument(xmlWriter, fieldData);
await xmlWriter.FlushAsync();
return(inputFile);
}
/// <summary>
/// Reads the PDF and returns the form field statistics.
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="pdfFile">A stream of the PDF file input.</param>
/// <returns>A result with the form field statistics</returns>
public static async Task <IPDFtkResult <IDataField[]> > GetDataFieldsAsync(this IPDFtk pdftk, Stream pdfFile)
{
using var inputFile = await TempPDFtkFile.FromAsync(pdfFile);
return(await pdftk.GetDataFieldsAsync(inputFile.TempFileName));
}
/// <summary>
/// Return the number of pages for a given PDF.
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="pdfFile">A stream containing the PDF file input.</param>
/// <returns>A result with the number of pages.</returns>
/// See <see cref="PDFtkByteArrayExtensions.GetNumberOfPagesAsync(IPDFtk, byte[])"/> to use a PDF input as a byte array or <see cref="IPDFtk.GetNumberOfPagesAsync(string)"/> to use a PDF file path.
public static async Task <IPDFtkResult <int?> > GetNumberOfPagesAsync(this IPDFtk pdftk, Stream pdfFile)
{
using var inputFile = await TempPDFtkFile.FromAsync(pdfFile);
return(await pdftk.GetNumberOfPagesAsync(inputFile.TempFileName));
}
/// <summary>
/// Concatenate a list of pages into one single file and returns the output PDF as a byte array.
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="pdfFile">A stream of the PDF file input.</param>
/// <param name="pages">The pages to concatenate.</param>
/// <returns>A result with the PDF as a byte array with the concatenated pages.</returns>
public static async Task <IPDFtkResult <byte[]> > GetPagesAsync(this IPDFtk pdftk, Stream pdfFile, params int[] pages)
{
using var inputFile = await TempPDFtkFile.FromAsync(pdfFile);
return(await pdftk.GetPagesAsync(inputFile.TempFileName, pages));
}
/// <summary>
/// Splits a single PDF in many pages and return an enumeration of bytes representing each page a s single PDF.
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="pdfFile">A stream of the PDF file input.</param>
/// <returns>A result with an enumeration of key value pair where the key is the filename and the value is a byte arrays.</returns>
public static async Task <IPDFtkResult <IReadOnlyCollection <KeyValuePair <string, byte[]> > > > SplitAsync(this IPDFtk pdftk, Stream pdfFile)
{
using var inputFile = await TempPDFtkFile.FromAsync(pdfFile);
return(await pdftk.SplitAsync(inputFile.TempFileName));
}
/// <summary>
/// Extracts attachments from a PDF file.
/// </summary>
/// <param name="pdftk">The IPDFtk object.</param>
/// <param name="fileBytes">A byte array of the PDF file input.</param>
/// <returns>A result with the attachments.</returns>
public static async Task <IPDFtkResult <IReadOnlyCollection <KeyValuePair <string, byte[]> > > > ExtractAttachments(this IPDFtk pdftk, byte[] fileBytes)
{
using var inputFile = await TempPDFtkFile.FromAsync(fileBytes);
return(await pdftk.ExtractAttachments(inputFile.TempFileName));
}
