private string ExecutePhantomJs(string phantomJsExeToUse, string inputFileName, string outputFolder, PdfGeneratorParams param)
{
if (param == null)
{
param = new PdfGeneratorParams();
}
var layout = param.PageWidth > 0 && param.PageHeight > 0
? $"{param.PageWidth}{param.DimensionUnit.GetValue()}*{param.PageHeight}{param.DimensionUnit.GetValue()}"
: param.Format.ToString();
var outputFileName = Path.GetFileNameWithoutExtension(inputFileName);
var outputFilePath = Path.Combine(outputFolder, $"{outputFileName}.pdf");
var exePath = Path.Combine(PhantomRootFolder, phantomJsExeToUse);
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ||
RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
SetFilePermission(phantomJsExeToUse);
}
var startInfo = new ProcessStartInfo
{
FileName = exePath,
WorkingDirectory = PhantomRootFolder,
Arguments = $@"rasterize.js ""{inputFileName}"" ""{outputFilePath}"" ""{layout}"" {param.ZoomFactor}",
// TODO: include orientation parameter ""{param.Orientation.GetValue()}"" ",
UseShellExecute = false,
CreateNoWindow = true
};
var proc = new Process {
StartInfo = startInfo
};
proc.Start();
proc.WaitForExit();
return(outputFilePath);
}
/// <summary>
/// This function takes in an 'html' string and generates a pdf
/// containing its rendered version, and writes the pdf to the passed
/// output 'outputFolder'.
/// </summary>
/// <param name="html">A string with html page contents.</param>
/// <param name="outputFolder">
/// The folder where the file will be created.
/// <param name="param">An instance of <c>PdfGeneratorParams</c> class.</param>
/// If the output folder is null, empty or doesn't exist, the current app
/// directory will be used.
/// </param>
/// <returns>The absolute path to the new file created.</returns>
public string GeneratePdf(string html, string outputFolder = null, PdfGeneratorParams param = null)
{
if (string.IsNullOrEmpty(outputFolder) || !Directory.Exists(outputFolder))
{
outputFolder = PhantomRootFolder;
}
string pdfFileName;
var htmlFileName = WriteHtmlToTempFile(html);
try
{
var exeToUse = GetOsExecutableName();
WriteResourcesToDisk(exeToUse);
WriteResourcesToDisk(Consts.Rasterize);
pdfFileName = ExecutePhantomJs(exeToUse, htmlFileName, outputFolder, param);
}
finally
{
File.Delete(Path.Combine(PhantomRootFolder, htmlFileName));
}
return(pdfFileName);
}
