public static void ConvertHtmlToPdf(PdfDocument document, PdfConvertEnvironment environment, PdfOutput woutput)
{
if (document.Url == "-" && document.Html == null)
throw new PdfConvertException(
String.Format("You must supply a HTML string, if you have enterd the url: {0}", document.Url)
);
if (environment == null)
environment = Environment;
String outputPdfFilePath;
bool delete;
if (woutput.OutputFilePath != null)
{
outputPdfFilePath = woutput.OutputFilePath;
delete = false;
}
else
{
outputPdfFilePath = Path.Combine(environment.TempFolderPath, String.Format("{0}.pdf", Guid.NewGuid()));
delete = true;
}
if (!File.Exists(environment.WkHtmlToPdfPath))
throw new PdfConvertException(String.Format("File '{0}' not found. Check if wkhtmltopdf application is installed.", environment.WkHtmlToPdfPath));
ProcessStartInfo si;
StringBuilder paramsBuilder = new StringBuilder();
paramsBuilder.Append("--page-size A4 ");
//paramsBuilder.Append("--redirect-delay 0 "); not available in latest version
if (!string.IsNullOrEmpty(document.HeaderUrl))
{
paramsBuilder.AppendFormat("--header-html {0} ", document.HeaderUrl);
paramsBuilder.Append("--margin-top 25 ");
paramsBuilder.Append("--header-spacing 5 ");
}
if (!string.IsNullOrEmpty(document.FooterUrl))
{
paramsBuilder.AppendFormat("--footer-html {0} ", document.FooterUrl);
paramsBuilder.Append("--margin-bottom 25 ");
paramsBuilder.Append("--footer-spacing 5 ");
}
if (!string.IsNullOrEmpty(document.HeaderLeft))
paramsBuilder.AppendFormat("--header-left \"{0}\" ", document.HeaderLeft);
if (!string.IsNullOrEmpty(document.FooterCenter))
paramsBuilder.AppendFormat("--header-center \"{0}\" ", document.HeaderCenter);
if (!string.IsNullOrEmpty(document.FooterCenter))
paramsBuilder.AppendFormat("--header-right \"{0}\" ", document.HeaderRight);
if (!string.IsNullOrEmpty(document.FooterLeft))
paramsBuilder.AppendFormat("--footer-left \"{0}\" ", document.FooterLeft);
if (!string.IsNullOrEmpty(document.FooterCenter))
paramsBuilder.AppendFormat("--footer-center \"{0}\" ", document.FooterCenter);
if (!string.IsNullOrEmpty(document.FooterCenter))
paramsBuilder.AppendFormat("--footer-right \"{0}\" ", document.FooterRight);
paramsBuilder.AppendFormat("\"{0}\" \"{1}\"", document.Url, outputPdfFilePath);
si = new ProcessStartInfo();
si.CreateNoWindow = !environment.Debug;
si.FileName = environment.WkHtmlToPdfPath;
si.Arguments = paramsBuilder.ToString();
si.UseShellExecute = false;
si.RedirectStandardError = !environment.Debug;
si.RedirectStandardInput = true;
try
{
using (var process = new Process())
{
process.StartInfo = si;
process.Start();
if (document.Html != null)
using (var stream = process.StandardInput)
{
byte[] buffer = Encoding.UTF8.GetBytes(document.Html);
stream.BaseStream.Write(buffer, 0, buffer.Length);
stream.WriteLine();
}
if (!process.WaitForExit(environment.Timeout))
throw new PdfConvertTimeoutException();
if (!File.Exists(outputPdfFilePath))
{
if (process.ExitCode != 0)
{
var error = si.RedirectStandardError ? process.StandardError.ReadToEnd() : String.Format("Process exited with code {0}.", process.ExitCode);
throw new PdfConvertException(String.Format("Html to PDF conversion of '{0}' failed. Wkhtmltopdf output: \r\n{1}", document.Url, error));
}
throw new PdfConvertException(String.Format("Html to PDF conversion of '{0}' failed. Reason: Output file '{1}' not found.", document.Url, outputPdfFilePath));
}
if (woutput.OutputStream != null)
{
using (Stream fs = new FileStream(outputPdfFilePath, FileMode.Open))
{
byte[] buffer = new byte[32 * 1024];
int read;
while ((read = fs.Read(buffer, 0, buffer.Length)) > 0)
woutput.OutputStream.Write(buffer, 0, read);
}
}
if (woutput.OutputCallback != null)
{
woutput.OutputCallback(document, File.ReadAllBytes(outputPdfFilePath));
}
}
}
finally
{
if (delete && File.Exists(outputPdfFilePath))
File.Delete(outputPdfFilePath);
}
}
public static void ConvertHtmlToPdf(PdfDocument document, PdfOutput output)
{
ConvertHtmlToPdf(document, null, output);
}
