/// <summary>
/// Extract all images from a PDF file
/// </summary>
/// <param name="pdfPath">Full path and file name of PDF file</param>
/// <param name="outputFilePrefix">Basic name of exported files. If null then uses same name as PDF file.</param>
/// <param name="outputFolder">Where to save images. If null or empty then uses same folder as PDF file.</param>
/// <param name="overwriteExistingFiles">True to overwrite existing image files, false to skip past them</param>
/// <returns>Count of number of images extracted.</returns>
public static int ExtractImagesFromFile(string pdfPath, string outputFilePrefix, string outputFolder, bool overwriteExistingFiles)
{
// Handle setting of any default values
outputFilePrefix = outputFilePrefix ?? System.IO.Path.GetFileNameWithoutExtension(pdfPath);
outputFolder = String.IsNullOrEmpty(outputFolder) ? System.IO.Path.GetDirectoryName(pdfPath) : outputFolder;
var instance = new ImageExtractor(outputFilePrefix, outputFolder, overwriteExistingFiles);
using (var pdfReader = new PdfReader(pdfPath)) {
if (pdfReader.IsEncrypted())
{
throw new ApplicationException(pdfPath + " is encrypted.");
}
var pdfParser = new PdfReaderContentParser(pdfReader);
while (instance._currentPage <= pdfReader.NumberOfPages)
{
pdfParser.ProcessContent(instance._currentPage, instance);
instance._currentPage++;
}
}
return(instance._imageCount);
}
public static int ExtractImagesFromFile(string pdfFileName, string outputFilePrefix, string outputDirectory, bool overwriteExistingImages)
{
return(ImageExtractor.ExtractImagesFromFile(pdfFileName, outputFilePrefix, outputDirectory, overwriteExistingImages));
}
