/// <summary>
/// Converts a PdfDocument object from HTML to PDf.
/// </summary>
/// <param name="document">The PDF input document.</param>
/// <param name="environment">The wkhtml enviromental settings object.</param>
/// <param name="woutput">An object holding the output settings.</param>
public static Task ConvertHtmlToPdfAsync(PdfDocument document, PdfConvertEnvironment environment, PdfOutput output)
{
return Task.Factory.StartNew(() =>
{
ConvertHtmlToPdf(document, environment, output);
});
}
/// <summary>
/// Converts a PdfDocument object from HTML to PDf.
/// </summary>
/// <param name="document">The PDF input document.</param>
/// <param name="environment">The wkhtml enviromental settings object.</param>
/// <param name="woutput">An object holding the output settings.</param>
public static void ConvertHtmlToPdf(PdfDocument document, PdfConvertEnvironment environment, PdfOutput woutput)
{
if (IsEmptyUrl(document.Url) && string.IsNullOrEmpty(document.Html))
throw new PdfConvertException(
String.Format("You must supply a HTML string, if you have entered the url: {0}",
document.Url)
);
if (environment == null)
environment = Environment;
if (!File.Exists(environment.WkHtmlToPdfPath))
throw new PdfConvertException(
String.Format("File '{0}' not found. Check if wkhtmltopdf application is installed.",
environment.WkHtmlToPdfPath));
string PdfOutputPath;
if (woutput.OutputFilePath == null)
PdfOutputPath = Path.Combine(Environment.TempFolderPath, Path.GetRandomFileName());
else
PdfOutputPath = woutput.OutputFilePath;
var error = new StringBuilder();
using (var output = new MemoryStream())
using (Process process = new Process())
{
process.StartInfo.FileName = environment.WkHtmlToPdfPath;
process.StartInfo.Arguments = BuildParams(document, PdfOutputPath);
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.RedirectStandardError = true;
process.StartInfo.RedirectStandardInput = true;
using (AutoResetEvent errorWaitHandle = new AutoResetEvent(false))
{
DataReceivedEventHandler errorHandler = (sender, e) =>
{
if (e.Data == null)
errorWaitHandle.Set();
else
{
error.AppendLine(e.Data);
}
};
process.ErrorDataReceived += errorHandler;
process.Start();
process.BeginErrorReadLine();
if (document.Html != null && IsEmptyUrl(document.Url))
using (var stream = process.StandardInput)
stream.Write(document.Html);
if (process.WaitForExit(environment.Timeout) && errorWaitHandle.WaitOne())
{
if (process.ExitCode != 0)
throw new PdfConvertException(
String.Format("Html to PDF conversion of document failed. Wkhtmltopdf output: \r\n{1}",
document.Url, error));
else
{
if (woutput.OutputStream != null || woutput.OutputCallback != null)
{
int read;
byte[] buff = new byte[BUFFER_SIZE];
using (var fs = new FileStream(PdfOutputPath, FileMode.Open))
while ((read = fs.Read(buff, 0, BUFFER_SIZE)) > 0)
output.Write(buff, 0, read);
output.Position = 0;
if (woutput.OutputStream != null)
while ((read = output.Read(buff, 0, BUFFER_SIZE)) > 0)
woutput.OutputStream.Write(buff, 0, read);
if (woutput.OutputCallback != null)
woutput.OutputCallback(document, output.ToArray());
}
}
}
else
{
if (!process.HasExited)
process.Kill();
throw new PdfConvertTimeoutException();
}
process.ErrorDataReceived -= errorHandler;
if (woutput.OutputFilePath == null)
File.Delete(PdfOutputPath);
}
}
}
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));
StringBuilder paramsBuilder = new StringBuilder();
paramsBuilder.Append("--page-size A4 ");
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);
if(document.ExtraParams != null)
foreach (var extraParam in document.ExtraParams)
paramsBuilder.AppendFormat("--{0} {1} ", extraParam.Key, extraParam.Value);
if (document.Cookies != null)
foreach (var cookie in document.Cookies)
paramsBuilder.AppendFormat("--cookie {0} {1} ", cookie.Key, cookie.Value);
paramsBuilder.AppendFormat("\"{0}\" \"{1}\"", document.Url, outputPdfFilePath);
try
{
StringBuilder output = new StringBuilder();
StringBuilder error = new StringBuilder();
using (Process process = new Process())
{
process.StartInfo.FileName = environment.WkHtmlToPdfPath;
process.StartInfo.Arguments = paramsBuilder.ToString();
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.RedirectStandardError = true;
process.StartInfo.RedirectStandardInput = true;
using (AutoResetEvent outputWaitHandle = new AutoResetEvent(false))
using (AutoResetEvent errorWaitHandle = new AutoResetEvent(false))
{
DataReceivedEventHandler outputHandler = (sender, e) =>
{
if (e.Data == null)
{
outputWaitHandle.Set();
}
else
{
output.AppendLine(e.Data);
}
};
DataReceivedEventHandler errorHandler = (sender, e) =>
{
if (e.Data == null)
{
errorWaitHandle.Set();
}
else
{
error.AppendLine(e.Data);
}
};
process.OutputDataReceived += outputHandler;
process.ErrorDataReceived += errorHandler;
try
{
process.Start();
process.BeginOutputReadLine();
process.BeginErrorReadLine();
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) && outputWaitHandle.WaitOne(environment.Timeout) && errorWaitHandle.WaitOne(environment.Timeout))
{
if (process.ExitCode != 0 && !File.Exists(outputPdfFilePath))
{
throw new PdfConvertException(String.Format("Html to PDF conversion of '{0}' failed. Wkhtmltopdf output: \r\n{1}", document.Url, error));
}
}
else
{
if (!process.HasExited)
process.Kill();
throw new PdfConvertTimeoutException();
}
}
finally
{
process.OutputDataReceived -= outputHandler;
process.ErrorDataReceived -= errorHandler;
}
}
}
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)
{
byte[] pdfFileBytes = File.ReadAllBytes(outputPdfFilePath);
woutput.OutputCallback(document, pdfFileBytes);
}
}
finally
{
if (delete && File.Exists(outputPdfFilePath))
File.Delete(outputPdfFilePath);
}
}
public static void ConvertHtmlToPdf(PdfDocument document, PdfConvertEnvironment environment, PdfOutput woutput)
{
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 ");
}
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;
try
{
using (var process = new Process())
{
process.StartInfo = si;
process.Start();
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);
}
}
/// <summary>
/// Converts a PdfDocument object from HTML to PDf.
/// </summary>
/// <param name="document">The PDF input document.</param>
/// <param name="environment">The wkhtml enviromental settings object.</param>
/// <param name="woutput">An object holding the output settings.</param>
public static void ConvertHtmlToPdf(PdfDocument document, PdfConvertEnvironment environment, PdfOutput woutput)
{
if (IsEmptyUrl(document.Url) && string.IsNullOrEmpty(document.Html))
throw new PdfConvertException(
String.Format("You must supply a HTML string, if you have entered the url: {0}",
document.Url)
);
if (!IsEmptyUrl(document.Url))
if (!Uri.IsWellFormedUriString(document.Url, UriKind.Absolute))
throw new PdfConvertException(
String.Format("This is not a valid url: {0}", document.Url)
);
if (environment == null)
environment = Environment;
if (!File.Exists(environment.WkHtmlToPdfPath))
throw new PdfConvertException(
String.Format("File '{0}' not found. Check if wkhtmltopdf application is installed.",
environment.WkHtmlToPdfPath));
string PdfOutputPath;
if (string.IsNullOrEmpty(woutput.OutputFilePath))
PdfOutputPath = Path.Combine(Environment.TempFolderPath, Guid.NewGuid().ToString());
else
PdfOutputPath = woutput.OutputFilePath;
var error = new StringBuilder();
using (Process process = new Process())
{
process.StartInfo.FileName = environment.WkHtmlToPdfPath;
process.StartInfo.Arguments = BuildParams(document, PdfOutputPath);
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardError = true;
process.StartInfo.RedirectStandardInput = true;
using (AutoResetEvent errorWaitHandle = new AutoResetEvent(false))
{
process.ErrorDataReceived += (DataReceivedEventHandler)((sender, e) =>
{
if (e.Data == null)
errorWaitHandle.Set();
else
{
error.AppendLine(e.Data);
}
});
process.Start();
process.BeginErrorReadLine();
if (document.Html != null && IsEmptyUrl(document.Url))
using (var stream = process.StandardInput)
stream.Write(document.Html);
if (process.WaitForExit(environment.Timeout) && errorWaitHandle.WaitOne(environment.Timeout))
{
if (process.ExitCode != 0)
throw new PdfConvertException(
String.Format("Html to PDF conversion of document failed. Wkhtmltopdf output: \r\n{1}",
document.Url, error));
else
{
if (woutput.OutputStream != null || woutput.OutputCallback != null)
{
byte[] buff = File.ReadAllBytes(PdfOutputPath);
if (woutput.OutputStream != null)
woutput.OutputStream.Write(buff, 0, buff.Length);
if (woutput.OutputCallback != null)
woutput.OutputCallback(document, buff);
}
}
}
else
{
if (!process.HasExited)
process.Kill();
throw new PdfConvertTimeoutException();
}
if (woutput.OutputFilePath == null)
File.Delete(PdfOutputPath);
}
}
}
