public static bool BuildPreview(string temporaryDirectory, string sourceFile, string mimetype, int width, int height, out string previewMimetype, out string previewPath, out string error)
{
IPreview preview = null;
bool success = false;
previewMimetype = null;
previewPath = null;
error = null;
if (mimetype.StartsWith("image/") || mimetype.StartsWith("video/") || mimetype.StartsWith("audio/"))
{
preview = new ImageVideoPreview(temporaryDirectory);
}
else if (Pdf.PdfService.IsPdfCompatible(mimetype))
{
preview = new PdfPreview(temporaryDirectory);
}
else if (mimetype == "text/uri-list")
{
preview = new UrlPreview(temporaryDirectory);
}
else if (mimetype.StartsWith("text/plain"))
{
preview = new TextPreview(temporaryDirectory);
}
if (preview != null)
{
PreviewFormat format;
previewPath = preview.Process(sourceFile, mimetype, width, height, out format, out error);
if (previewPath != null)
{
if (format == PreviewFormat.PNG)
{
previewMimetype = "image/png";
}
else
{
previewMimetype = "image/jpeg";
}
success = true;
}
else
{
success = false;
}
}
return(success);
}
bool BuildPreview(string storage, long file, string filepath, string mimetype, out string previewMimetype, out string previewPath)
{
IPreview preview = null;
bool success = false;
previewMimetype = null;
previewPath = null;
if (mimetype.StartsWith("image/") || mimetype.StartsWith("video/") || mimetype.StartsWith("audio/"))
{
preview = new ImageVideoPreview(temporaryDirectory);
}
else if (Pdf.PdfService.IsPdfCompatible(mimetype))
{
preview = new PdfPreview(temporaryDirectory);
}
else if (mimetype == "text/uri-list")
{
preview = new UrlPreview(temporaryDirectory);
}
else if (mimetype.StartsWith("text/plain"))
{
preview = new TextPreview(temporaryDirectory);
}
if (preview != null)
{
PreviewFormat format;
string error;
string previewFile = preview.Process(filepath, mimetype, width, height, out format, out error);
if (previewFile != null)
{
if (!Directory.Exists(basePath + "/" + storage))
{
Directory.CreateDirectory(basePath + "/" + storage);
}
if (format == PreviewFormat.PNG)
{
previewMimetype = "image/png";
}
else
{
previewMimetype = "image/jpeg";
}
previewPath = basePath + "/" + storage + "/" + file;
try {
File.Move(previewFile, previewPath);
}
catch (IOException) {
File.Replace(previewFile, previewPath, null);
}
success = true;
}
else
{
if (error != null)
{
logger.Log(LogLevel.Error, error);
}
success = false;
}
}
return(success);
}
