/// <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);
}));
}
public static void ConvertHtmlToPdf(PdfDocument document, PdfConvertEnvironment environment, PdfOutput woutput)
{
if (environment == null)
{
environment = Environment;
}
if (document.Html != null)
{
document.Url = "-";
}
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.HeaderCenter))
{
paramsBuilder.AppendFormat("--header-center \"{0}\" ", document.HeaderCenter);
}
if (!string.IsNullOrEmpty(document.HeaderRight))
{
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.FooterRight))
{
paramsBuilder.AppendFormat("--footer-right \"{0}\" ", document.FooterRight);
}
if (!string.IsNullOrEmpty(document.HeaderFontSize))
{
paramsBuilder.AppendFormat("--header-font-size \"{0}\" ", document.HeaderFontSize);
}
if (!string.IsNullOrEmpty(document.FooterFontSize))
{
paramsBuilder.AppendFormat("--footer-font-size \"{0}\" ", document.FooterFontSize);
}
if (!string.IsNullOrEmpty(document.HeaderFontName))
{
paramsBuilder.AppendFormat("--header-font-name \"{0}\" ", document.HeaderFontName);
}
if (!string.IsNullOrEmpty(document.FooterFontName))
{
paramsBuilder.AppendFormat("--footer-font-name \"{0}\" ", document.FooterFontName);
}
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);
}
}
}
/// <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 (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);
}
}
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 (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));
}
if (!File.Exists(outputPdfFilePath))
{
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 (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;
process.StartInfo.CreateNoWindow = true;
process.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
using (AutoResetEvent errorWaitHandle = new AutoResetEvent(false))
{
DataReceivedEventHandler errorHandler = (sender, e) =>
{
//if (e.Data == null)
// errorWaitHandle.Set();
//else
//{
if (e.Data != null)
{
error.AppendLine(e.Data);
}
else
{
errorWaitHandle.Set();
}
//}
};
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 && process.ExitCode != 1)
{
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
{
process.ErrorDataReceived -= errorHandler;
if (!process.HasExited)
{
process.Kill();
}
if (woutput.OutputFilePath == null || File.Exists(PdfOutputPath))
{
try {
File.Delete(PdfOutputPath);
}
catch (System.IO.IOException e)
{
Console.Write(e.StackTrace.ToString());
}
}
throw new PdfConvertTimeoutException();
}
process.ErrorDataReceived -= errorHandler;
if (woutput.OutputFilePath == null)
{
File.Delete(PdfOutputPath);
}
}
}
}
private static async Task ConvertHtmlToPdfCoreAsync(bool blnSync, PdfDocument document, PdfConvertEnvironment environment, PdfOutput woutput)
{
if (environment == null)
{
environment = Environment;
}
if (document.Html != null)
{
document.Url = "-";
}
string outputPdfFilePath;
bool delete;
if (woutput.OutputFilePath != null)
{
outputPdfFilePath = woutput.OutputFilePath;
delete = false;
}
else
{
outputPdfFilePath = Path.Combine(environment.TempFolderPath, Guid.NewGuid() + ".pdf");
delete = true;
}
if (!File.Exists(environment.WkHtmlToPdfPath))
{
throw new PdfConvertException($"File '{environment.WkHtmlToPdfPath}' not found. Check if wkhtmltopdf application is installed.");
}
string strParams;
using (new FetchSafelyFromPool <StringBuilder>(Utils.StringBuilderPool,
out StringBuilder sbdParams))
{
sbdParams.Append("--page-size A4 ");
sbdParams.Append("--disable-smart-shrinking ");
if (!string.IsNullOrEmpty(document.HeaderUrl))
{
sbdParams.Append("--header-html ").Append(document.HeaderUrl).Append(" --margin-top 25 ")
.Append("--margin-top 25 ").Append("--header-spacing 5 ");
}
if (!string.IsNullOrEmpty(document.FooterUrl))
{
sbdParams.Append("--footer-html ").Append(document.FooterUrl).Append(" --margin-bottom 25 ")
.Append("--footer-spacing 5 ");
}
if (!string.IsNullOrEmpty(document.HeaderLeft))
{
sbdParams.Append("--header-left \"").Append(document.HeaderLeft).Append("\" ");
}
if (!string.IsNullOrEmpty(document.HeaderCenter))
{
sbdParams.Append("--header-center \"").Append(document.HeaderCenter).Append("\" ");
}
if (!string.IsNullOrEmpty(document.HeaderRight))
{
sbdParams.Append("--header-right \"").Append(document.HeaderRight).Append("\" ");
}
if (!string.IsNullOrEmpty(document.FooterLeft))
{
sbdParams.Append("--footer-left \"").Append(document.FooterLeft).Append("\" ");
}
if (!string.IsNullOrEmpty(document.FooterCenter))
{
sbdParams.Append("--footer-center \"").Append(document.FooterCenter).Append("\" ");
}
if (!string.IsNullOrEmpty(document.FooterRight))
{
sbdParams.Append("--footer-right \"").Append(document.FooterRight).Append("\" ");
}
if (!string.IsNullOrEmpty(document.HeaderFontSize))
{
sbdParams.Append("--header-font-size \"").Append(document.HeaderFontSize).Append("\" ");
}
if (!string.IsNullOrEmpty(document.FooterFontSize))
{
sbdParams.Append("--footer-font-size \"").Append(document.FooterFontSize).Append("\" ");
}
if (!string.IsNullOrEmpty(document.HeaderFontName))
{
sbdParams.Append("--header-font-name \"").Append(document.HeaderFontName).Append("\" ");
}
if (!string.IsNullOrEmpty(document.FooterFontName))
{
sbdParams.Append("--footer-font-name \"").Append(document.FooterFontName).Append("\" ");
}
if (document.ExtraParams != null)
{
foreach (KeyValuePair <string, string> extraParam in document.ExtraParams)
{
sbdParams.Append("--").Append(extraParam.Key).Append(' ').Append(extraParam.Value)
.Append(' ');
}
}
if (document.Cookies != null)
{
foreach (KeyValuePair <string, string> cookie in document.Cookies)
{
sbdParams.Append("--cookie ").Append(cookie.Key).Append(' ').Append(cookie.Value)
.Append(' ');
}
}
sbdParams.Append('\"').Append(document.Url).Append("\" \"").Append(outputPdfFilePath).Append('\"');
strParams = sbdParams.ToString();
}
try
{
using (Process process = new Process {
EnableRaisingEvents = true
})
{
process.StartInfo.FileName = environment.WkHtmlToPdfPath;
process.StartInfo.Arguments = strParams;
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))
using (new FetchSafelyFromPool <StringBuilder>(Utils.StringBuilderPool,
out StringBuilder output))
using (new FetchSafelyFromPool <StringBuilder>(Utils.StringBuilderPool,
out StringBuilder error))
{
void OutputHandler(object sender, DataReceivedEventArgs e)
{
if (e.Data == null)
{
// ReSharper disable once AccessToDisposedClosure
outputWaitHandle.Set();
}
else
{
output.AppendLine(e.Data);
}
}
void ErrorHandler(object sender, DataReceivedEventArgs e)
{
if (e.Data == null)
{
// ReSharper disable once AccessToDisposedClosure
errorWaitHandle.Set();
}
else
{
error.AppendLine(e.Data);
}
}
process.OutputDataReceived += OutputHandler;
process.ErrorDataReceived += ErrorHandler;
Task <int> tskAsyncProcess = null;
try
{
using (CancellationTokenSource objCancellationTokenSource
= new CancellationTokenSource(environment.Timeout))
{
CancellationToken objToken = objCancellationTokenSource.Token;
if (blnSync)
{
process.Start();
}
else
{
#pragma warning disable AsyncFixer04 // Fire-and-forget async call inside a using block
tskAsyncProcess = process.StartAsync(objToken);
#pragma warning restore AsyncFixer04 // Fire-and-forget async call inside a using block
}
process.BeginOutputReadLine();
process.BeginErrorReadLine();
if (document.Html != null)
{
using (StreamWriter stream = process.StandardInput)
{
byte[] buffer = Encoding.UTF8.GetBytes(document.Html);
if (blnSync)
{
// ReSharper disable once MethodHasAsyncOverloadWithCancellation
stream.BaseStream.Write(buffer, 0, buffer.Length);
// ReSharper disable once MethodHasAsyncOverload
stream.WriteLine();
}
else
{
try
{
await stream.BaseStream.WriteAsync(buffer, 0, buffer.Length, objToken);
await stream.WriteLineAsync();
}
catch (OperationCanceledException)
{
// Swallow this
}
}
}
}
if (blnSync)
{
if (process.WaitForExit(environment.Timeout) &&
outputWaitHandle.WaitOne(environment.Timeout) &&
errorWaitHandle.WaitOne(environment.Timeout))
{
if (process.ExitCode != 0 && !File.Exists(outputPdfFilePath))
{
throw new PdfConvertException(
$"Html to PDF conversion of '{document.Url}' failed. Wkhtmltopdf output: \r\n{error}");
}
}
else
{
if (!process.HasExited)
{
process.Kill();
}
throw new PdfConvertTimeoutException();
}
}
else
{
int intTaskResult = await tskAsyncProcess;
if (tskAsyncProcess.IsCompleted && !objToken.IsCancellationRequested)
{
if (intTaskResult != 0 && !File.Exists(outputPdfFilePath))
{
throw new PdfConvertException(
$"Html to PDF conversion of '{document.Url}' failed. Wkhtmltopdf output: \r\n{error}");
}
}
else
{
if (!process.HasExited)
{
process.Kill();
}
throw new PdfConvertTimeoutException();
}
}
}
}
finally
{
process.OutputDataReceived -= OutputHandler;
process.ErrorDataReceived -= ErrorHandler;
tskAsyncProcess?.Dispose();
}
}
}
if (woutput.OutputStream != null)
{
using (FileStream fs = new FileStream(outputPdfFilePath, FileMode.Open))
{
byte[] buffer = ArrayPool <byte> .Shared.Rent(32 * 1024);
int read;
if (blnSync)
{
// ReSharper disable once MethodHasAsyncOverload
while ((read = fs.Read(buffer, 0, buffer.Length)) > 0)
{
// ReSharper disable once MethodHasAsyncOverload
woutput.OutputStream.Write(buffer, 0, read);
}
}
else
{
while ((read = await fs.ReadAsync(buffer, 0, buffer.Length)) > 0)
{
await woutput.OutputStream.WriteAsync(buffer, 0, read);
}
}
ArrayPool <byte> .Shared.Return(buffer);
}
}
if (woutput.OutputCallback != null)
{
byte[] pdfFileBytes = File.ReadAllBytes(outputPdfFilePath);
woutput.OutputCallback(document, pdfFileBytes);
}
}
finally
{
if (delete)
{
if (blnSync)
{
// ReSharper disable once MethodHasAsyncOverload
Utils.SafeDeleteFile(outputPdfFilePath, true);
}
else
{
await Utils.SafeDeleteFileAsync(outputPdfFilePath, true);
}
}
}
}
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 Task ConvertHtmlToPdfAsync(PdfDocument document, PdfConvertEnvironment environment, PdfOutput woutput)
{
return(ConvertHtmlToPdfCoreAsync(false, document, environment, woutput));
}
public static void ConvertHtmlToPdf(PdfDocument document, PdfConvertEnvironment environment, PdfOutput woutput)
{
ConvertHtmlToPdfCoreAsync(true, document, environment, woutput).GetAwaiter().GetResult();
}
/// <summary>
/// Converts one or more HTML pages into a PDF document.
/// </summary>
/// <param name="document">Document definitions.</param>
/// <param name="environment">Environment definitions.</param>
/// <param name="woutput">Output definitions.</param>
public static void ConvertHtmlToPdf(PdfDocument document, PdfConvertEnvironment environment, PdfOutput woutput)
{
if ((document.Pages == null) || (document.Pages.Count == 0))
{
throw new PdfConvertException("You must supply at least one page");
}
if (document.Pages.OfType <PdfPage>().Any(p => string.IsNullOrEmpty(p.Html)))
{
throw new PdfConvertException("You must supply a HTML string or a URL for all pages");
}
if (document.Pages.OfType <PdfCover>().Any(p => string.IsNullOrEmpty(p.Html)))
{
throw new PdfConvertException("You must supply a HTML string or a URL for all cover pages");
}
if (environment == null)
{
environment = new PdfConvertEnvironment();
}
if (!environment.Timeout.HasValue)
{
environment.Timeout = 60000;
}
if (string.IsNullOrEmpty(environment.TempFolderPath))
{
environment.TempFolderPath = Path.GetTempPath();
}
if (string.IsNullOrEmpty(environment.WkHtmlToPdfPath))
{
environment.WkHtmlToPdfPath = GetWkhtmlToPdfExeLocation();
}
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;
}
// Se for um caminho completo verifica se o executável existe, do contrário considera que ele estará no PATH para rodar corretamente
if ((environment.WkHtmlToPdfPath.IndexOf(@"\", StringComparison.CurrentCulture) >= 0) && (!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();
WorkEnviroment workEnv = new WorkEnviroment()
{
TempFolderPath = environment.TempFolderPath
};
document.GetCmdArguments(paramsBuilder, workEnv);
paramsBuilder.AppendFormat("\"{0}\" ", 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().TrimEnd();
process.StartInfo.UseShellExecute = false;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.RedirectStandardError = true;
process.StartInfo.RedirectStandardInput = true;
process.StartInfo.WorkingDirectory = AppDomain.CurrentDomain.BaseDirectory;
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;
Debug.Print("Converting to PDF: {0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
try
{
process.Start();
process.BeginOutputReadLine();
process.BeginErrorReadLine();
//TODO:Usar parâmetro --read-args-from-stdin para otimizar geração de vários PDFs em processo batch
if (workEnv.StdinArguments.Count > 0) // Se precisa passar algum HTML por stdin
{
using (var stream = process.StandardInput)
{
workEnv.StdinArguments.ForEach(input =>
{
byte[] buffer = Encoding.UTF8.GetBytes(input);
stream.BaseStream.Write(buffer, 0, buffer.Length);
stream.WriteLine();
});
}
}
;
if (process.WaitForExit(environment.Timeout.Value) && outputWaitHandle.WaitOne(environment.Timeout.Value) && errorWaitHandle.WaitOne(environment.Timeout.Value))
{
if (process.ExitCode != 0 && !File.Exists(outputPdfFilePath))
{
throw new PdfConvertException(string.Format("Html to PDF conversion failed. Wkhtmltopdf output: \r\n{0}\r\nCommand line: {1} {2}", error, process.StartInfo.FileName, process.StartInfo.Arguments));
}
}
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);
}
foreach (var tmpFile in workEnv.TempFiles)
{
if (File.Exists(tmpFile))
{
File.Delete(tmpFile);
}
}
}
}
/// <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);
}
}
}
/// <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);
}
}
}
}
