/// <summary>
/// Converts the given <paramref name="inputUri" /> to PDF
/// </summary>
/// <param name="inputUri">The webpage to convert</param>
/// <param name="outputFile">The output file</param>
/// <param name="pageSettings"><see cref="PageSettings"/></param>
/// <param name="waitForWindowStatus">Wait until the javascript window.status has this value before
/// rendering the PDF</param>
/// <param name="waitForWindowsStatusTimeout"></param>
/// <param name="conversionTimeout">An conversion timeout in milliseconds, if the conversion failes
/// to finished in the set amount of time then an <see cref="ConversionTimedOutException"/> is raised</param>
/// <exception cref="ConversionTimedOutException">Raised when <see cref="conversionTimeout"/> is set and the
/// conversion fails to finish in this amount of time</exception>
/// <exception cref="DirectoryNotFoundException"></exception>
public void ConvertToPdf(ConvertUri inputUri,
string outputFile,
PageSettings pageSettings,
string waitForWindowStatus = "",
int waitForWindowsStatusTimeout = 60000,
int?conversionTimeout = null)
{
CheckIfOutputFolderExists(outputFile);
using (var memoryStream = new MemoryStream())
{
ConvertToPdf(inputUri, memoryStream, pageSettings, waitForWindowStatus,
waitForWindowsStatusTimeout, conversionTimeout);
using (var fileStream = File.Open(outputFile, FileMode.Create))
{
memoryStream.Position = 0;
memoryStream.CopyTo(fileStream);
}
}
}
///// <summary>
///// Converts the given <paramref name="inputFile" /> to JPG
///// </summary>
///// <param name="inputFile">The inputfile to convert to PDF</param>
///// <param name="outputFile">The output file</param>
///// <param name="pageSettings"><see cref="PageSettings"/></param>
///// <returns>The filename with full path to the generated PNG</returns>
///// <exception cref="DirectoryNotFoundException"></exception>
//public void ConvertToPng(string inputFile, string outputFile, PageSettings pageSettings)
//{
// CheckIfOutputFolderExists(outputFile);
// _communicator.NavigateTo(new Uri("file://" + inputFile), TODO);
// SetDefaultArgument("--screenshot", Path.ChangeExtension(outputFile, ".png"));
//}
///// <summary>
///// Converts the given <paramref name="inputUri" /> to JPG
///// </summary>
///// <param name="inputUri">The webpage to convert</param>
///// <param name="outputFile">The output file</param>
///// <returns>The filename with full path to the generated PNG</returns>
///// <exception cref="DirectoryNotFoundException"></exception>
//public void ConvertToPng(Uri inputUri, string outputFile)
//{
// CheckIfOutputFolderExists(outputFile);
// _communicator.NavigateTo(inputUri, TODO);
// SetDefaultArgument("--screenshot", Path.ChangeExtension(outputFile, ".png"));
//}
#endregion
#region CheckForPreWrap
/// <summary>
/// Checks if <see cref="PreWrapExtensions"/> is set and if the extension
/// is inside this list. When in the list then the file is wrapped
/// </summary>
/// <param name="inputFile"></param>
/// <param name="outputFile"></param>
/// <returns></returns>
private bool CheckForPreWrap(ConvertUri inputFile, out string outputFile)
{
outputFile = inputFile.LocalPath;
if (PreWrapExtensions.Count == 0)
{
return(false);
}
var ext = Path.GetExtension(inputFile.LocalPath);
if (!PreWrapExtensions.Contains(ext, StringComparison.InvariantCultureIgnoreCase))
{
return(false);
}
outputFile = PreWrapper.WrapFile(inputFile.LocalPath, inputFile.Encoding);
WriteToLog($"Prewraped file '{inputFile}' to '{outputFile}'");
return(true);
}
/// <summary>
/// Converts the given <paramref name="inputUri" /> to PDF
/// </summary>
/// <param name="inputUri">The webpage to convert</param>
/// <param name="outputStream">The output stream</param>
/// <param name="pageSettings"><see cref="PageSettings"/></param>
/// <param name="waitForWindowStatus">Wait until the javascript window.status has this value before
/// rendering the PDF</param>
/// <param name="waitForWindowsStatusTimeout"></param>
/// <param name="conversionTimeout">An conversion timeout in milliseconds, if the conversion failes
/// to finished in the set amount of time then an <see cref="ConversionTimedOutException"/> is raised</param>
/// <exception cref="ConversionTimedOutException">Raised when <see cref="conversionTimeout"/> is set and the
/// conversion fails to finish in this amount of time</exception>
public void ConvertToPdf(ConvertUri inputUri,
Stream outputStream,
PageSettings pageSettings,
string waitForWindowStatus = "",
int waitForWindowsStatusTimeout = 60000,
int?conversionTimeout = null)
{
if (inputUri.IsFile && !File.Exists(inputUri.OriginalString))
{
throw new FileNotFoundException($"The file '{inputUri.OriginalString}' does not exists");
}
FileInfo preWrappedFile = null;
try
{
if (inputUri.IsFile && CheckForPreWrap(inputUri, out var preWrapFile))
{
inputUri = new ConvertUri(preWrapFile);
preWrappedFile = new FileInfo(preWrapFile);
}
else if (ImageResize || ImageRotate)
{
if (!ImageHelper.ValidateImages(inputUri, ImageResize, ImageRotate, pageSettings, out var outputUri))
{
inputUri = outputUri;
}
}
StartChromeHeadless();
CountdownTimer countdownTimer = null;
if (conversionTimeout.HasValue)
{
if (conversionTimeout <= 1)
{
throw new ArgumentOutOfRangeException($"The value for {nameof(countdownTimer)} has to be a value equal to 1 or greater");
}
WriteToLog($"Conversion timeout set to {conversionTimeout.Value} milliseconds");
countdownTimer = new CountdownTimer(conversionTimeout.Value);
countdownTimer.Start();
}
WriteToLog("Loading " + (inputUri.IsFile ? "file " + inputUri.OriginalString : "url " + inputUri));
_communicator.NavigateTo(inputUri, countdownTimer);
if (!string.IsNullOrWhiteSpace(waitForWindowStatus))
{
if (conversionTimeout.HasValue)
{
WriteToLog("Conversion timeout paused because we are waiting for a window.status");
countdownTimer.Stop();
}
WriteToLog($"Waiting for window.status '{waitForWindowStatus}' or a timeout of {waitForWindowsStatusTimeout} milliseconds");
var match = _communicator.WaitForWindowStatus(waitForWindowStatus, waitForWindowsStatusTimeout);
WriteToLog(!match ? "Waiting timed out" : $"Window status equaled {waitForWindowStatus}");
if (conversionTimeout.HasValue)
{
WriteToLog("Conversion timeout started again because we are done waiting for a window.status");
countdownTimer.Start();
}
}
WriteToLog((inputUri.IsFile ? "File" : "Url") + " loaded");
WriteToLog("Converting to PDF");
using (var memorystream = new MemoryStream(_communicator.PrintToPdf(pageSettings, countdownTimer).Bytes))
{
memorystream.Position = 0;
memorystream.CopyTo(outputStream);
}
WriteToLog("Converted");
}
finally
{
if (preWrappedFile != null)
{
WriteToLog("Deleting prewrapped file");
preWrappedFile.Delete();
}
}
}
