According to the Discord.NET documentation page for the EmbedBuilder class, the syntax (converted to VB) to add a local image to an EmbedBuilder object should look something like this:
Dim fileName = "image.png"
Dim embed = New EmbedBuilder() With {
.ImageUrl = $"attachment://{fileName}"
}.Build()
I'm trying to use something like this to add a dynamically created image to the EmbedBuilder, but I can't seem to get it to work properly. Here's basically what I've got:
Dim TweetBuilder As New Discord.EmbedBuilder
Dim DynamicImagePath As String = CreateDynamicImage()
Dim AttachURI As String = $"attachment:///" & DynamicImagePath.Replace("\", "/").Replace(" ", "%20")
With Builder
.Description = "SAMPLE DESCRIPTION"
.ImageUrl = AttachURI
End With
MyClient.GetGuild(ServerID).GetTextChannel(PostChannelID).SendMessageAsync("THIS IS A TEST", False, Builder.Build)
My CreateDynamicImage method returns the full path to the locally created image (e.g., C:\Folder\Another Folder\image.png). I've done a fair amount of "fighting"/testing with this to get past the Url must be a well-formed URI exception I was initially getting because of the [SPACE] in the path.
MyClient is a Discord.WebSocket.SocketClient object set elsewhere.
The SendMessageAsync method does send the Embed to Discord on the correct channel, but without the embedded image.
If I instead send the image using the SendFileAsync method (like so):
MyClient.GetGuild(ServerID).GetTextChannel(PostChannelID).SendFileAsync(DynamicImagePath, "THIS IS A TEST", False, Builder.Build)
the image is sent, but as a part of the message, rather than included as a part of the Embed (this is expected behavior - I only bring it up b/c it was a part of my testing to ensure that there wasn't a problem with actually sending the image to Discord).
I've tried using the file:/// scheme instead of the attachment:/// scheme, but that results in the entire post never making it to Discord at all.
Additionally, I've tried setting the ImageUrl property to a Web resource (e.g., https://www.somesite.com/someimage.png) and the Embed looks exactly as expected with the image and everything when it successfully posts to Discord.
So, I'm just wondering at this point if I'm just missing something, or if I'm just doing it completely wrong?
I cross-posted this to issue #1609 in the Discord.Net GitHub project to get a better idea of what options are available for this and received a good explanation of the issue:
The Embed (and EmbedImage) objects don't do anything with files. They simply pass the URI as configured straight into Discord. Discord then expects a URI in the form attachment://filename.ext if you want to refer to an attached image.
What you need to do is use SendFileAsync with the embed. You have two options here:
Use SendFileAsync with the Stream stream, string filename overload. I think this makes it clear what you need to do: you provide a file stream (via File.OpenRead or similar) and a filename. The provided filename does not have to match any file on disk. > So, for example:
var embed = new EmbedBuilder()
.WithImageUrl("attachment://myimage.png")
.Build();
await channel.SendFileAsync(stream, "myimage.png", embed: embed);
Alternatively, you can use SendFileAsync with the string filePath overload. Internally, this gets a stream of the file at the path, and sets filename (as sent to Discord) to the last part of the path. So it's equivalent to:
using var stream = File.OpenRead(filePath);
var filename = Path.GetFileName(filePath);
await channel.SendFileAsync(stream, filename);
From here, you can see that if you want to use the string filePath overload, you need to set embed image URI to something like $"attachment://{Path.GetFileName(filePath)}", because the attachment filename must match the one sent to Discord.
I almost had it with my code above, but I misunderstood the intention and usage of the method and property. I guess I thought the .ImageUrl property somehow "automatically" initiated a Stream in the background. Additionally, I missed one very important piece:
As it's an async method, you must await (or whatever the VB.NET equivalent is) on SendFileAsync.
So, after making my calling method into an async method, my code now looks like this:
Private Async Sub TestMessageToDiscord()
Dim Builder As New Discord.EmbedBuilder
Dim AttachmentPath As String = CreateDynamicImage() '<-- Returns the full, local path to the created file
With Builder
.Description = "SAMPLE DESCRIPTION"
.ImageUrl = $"attachment://{IO.Path.GetFileName(AttachmentPath)}"
End With
Using AttachmentStream As IO.Stream = IO.File.OpenRead(AttachmentPath)
Await MyClient.GetGuild(ServerID).GetTextChannel(PostChannelID).SendFileAsync(AttachmentStream, IO.Path.GetFileName(AttachmentPath), "THIS IS A TEST", False, Builder.Build)
End Using
End Sub
Now, everything works exactly as expected and I didn't have to resort to uploading the image to a hosting site and using the new URL (I actually had that working before I got the response on GitHub. I'm sure that code won't go to waste).
EDIT
Okay, so I still ended up going back to my separately hosted image option for one reason: I have a separate event method that modifies the original Embed object during which I want to remove the image and replace the text. However, when that event fired, while the text was replaced, the image was "moved" to the body of the Discord message. While I may have been able to figure out how to get rid of the image entirely, I decided to "drop back and punt" since I had already worked out the hosted image solution.
I've tried everyting I could, but I got stuck at the same point at where you are now.
My guesses are that Discord doesn't like the embedded images from https://cdn.discordapp.com/attachments, and only accepts the new files from https://media.discordapp.net. I might be wrong though, this is the way it worked for me.
I believe it's only a visual glitch, as I found if you send a link for an image from cdn.discordapp.com/attchments in your regular Discord client, it bugs out and shows an empty embed for some reason.
That would make sense since the default link used in an embedded image actually starts with https://cdn.discordapp.com/attachments/...
You could solve this issue by using https://media.discordapp.net, but it seems like Discord.net is configured to use the old domain.
Related
This is my first experience of using PDFBox jar files. Also, I have recently started working on TestComplete. In short, all these things are new for me and I have been stuck on one issue for last few hours. I will try to explain as much as I can. Would really appreciate any help!
Objective:
To save an image present in a PDF file on the file system
Issue:
When this line gets executed objImage.write2file_2(strSavePath);, I get the error Object doesn't support this property or method.
I am taking some help from here
Code:
function fn_PDFImage()
{
var objPdfFile, strPdfFilePath, strSavePath, objPages, objPage, objImages, objImage, imgbuffer;
strPdfFilePath = "C:\\Users\\aabb\\Desktop\\name.pdf";
strSavePath = "C:\\Users\\aabb\\Desktop\\abc";
objPdfFile = JavaClasses.org_apache_pdfbox_pdmodel.PDDocument.load_3(strPdfFilePath);
objPages = objPdfFile.getDocumentCatalog().getAllPages();
//getting a page with index=1
objPage = objPages.get(1)
objImages = objPage.getResources().getXObjects().values().toArray();
Log.Message(objImages.length); //This is returning 14. i.e, 14 images
//getting an image with index=1
objImage = objImages.items(1);
Log.Message(typeof objImage); //returns "Object" which means it is not null
//saving the image
objImage.write2file_2(strSavePath); //<---GETTING AN ERROR HERE
}
ERROR:
If you are bothered about the method namewrite2file_2, please read this excerpt from the link which I have shared:
In Java, the constructor of a class has the name of this class.
TestComplete changes the constructor names to newInstance(). If a
class has overloaded constructors, TestComplete names them like
newInstance, newInstace_2, newInstance_3 and so on.
Additional Info:
I have imported Jar file(pdfbox-app-1.8.13.jar) and their classes in testcomplete. I am not sure if I need to import some other jar file or its class here:
XObjects are not always image XObjects. And write2file is in the class PDXObjectImage so you need to check your object type first.
Re the second question asked in the comment: the form XObject isn't something you can save. XObject forms are content streams with resources etc, similar to pages. However what you can do is to explore these too whether the resources have images. See how this is done in the ExtractImages source code of PDFBox 1.8.
However there are other places where there can be images (e.g. patterns, soft masks, inline images); this is only available in PDFBox 2.*, see the ExtractImages source code there. (Note that the class names are different).
I am new to S3 and need to use it for image storage. I found a half dozen versions of an s2wrapper for cf but it appears that the only one set of for v4 is one modified by Leigh
https://gist.github.com/Leigh-/26993ed79c956c9309a9dfe40f1fce29
Dropped in the com directory and created a "test" page that contains the following code:
s3 = createObject('component','com.S3Wrapper').init(application.s3.AccessKeyId,application.s3.SecretAccessKey);
but got the following error :
So I changed the line 37 from
variables.Sv4Util = createObject('component', 'Sv4').init(arguments.S3AccessKey, arguments.S3SecretAccessKey);
to
variables.Sv4Util = createObject('component', 'Sv4Util').init(arguments.S3AccessKey, arguments.S3SecretAccessKey);
Now I am getting:
I feel like going through Leigh code and start changing things is a bad idea since I have lurked here for year an know Leigh's code is solid.
Does any know if there are any examples on how to use this anywhere? If not what I am doing wrong. If it makes a difference I am using Lucee 5 and not Adobe's CF engine.
UPDATE :
I followed Leigh's directions and the error is now gone. I am addedsome more code to my test page which now looks like this :
<cfscript>
s3 = createObject('component','com.S3v4').init(application.s3.AccessKeyId,application.s3.SecretAccessKey);
bucket = "imgbkt.domain.com";
obj = "fake.ping";
region = "s3-us-west-1"
test = s3.getObject(bucket,obj,region);
writeDump(test);
test2 = s3.getObjectLink(bucket,obj,region);
writeDump(test2);
writeDump(s3);
</cfscript>
Regardless of what I put in for bucket, obj or region I get :
JIC I did go to AWS and get new keys:
Leigh if you are still around or anyone how has used one of the s3Wrappers any suggestions or guidance?
UPDATE #2:
Even after Alex's help I am not able to get this to work. The Link I receive from getObjectLink is not valid and getObject never does download an object. I thought I would try the putObject method
test3 = s3.putObject(bucketName=bucket,regionName=region,keyName="favicon.ico");
writeDump(test3);
to see if there is any additional information, I received this :
I did find this article https://shlomoswidler.com/2009/08/amazon-s3-gotcha-using-virtual-host.html but it is pretty old and since S3 specifically suggests using dots in bucketnames I don't that it is relevant any longer. There is obviously something I am doing wrong but I have spent hours trying to resolve this and I can't seem to figure out what it might be.
I will give you a rundown of what the code does:
getObjectLink returns a HTTP URL for the file fake.ping that is found looking in the bucket imgbkt.domain.com of region s3-us-west-1. This link is temporary and expires after 60 seconds by default.
getObject invokes getObjectLink and immediately requests the URL using HTTP GET. The response is then saved to the directory of the S3v4.cfc with the filename fake.ping by default. Finally the function returns the full path of the downloaded file: E:\wwwDevRoot\taa\fake.ping
To save the file in a different location, you would invoke:
downloadPath = 'E:\';
test = s3.getObject(bucket,obj,region,downloadPath);
writeDump(test);
The HTTP request is synchronous, meaning the file will be downloaded completely when the functions returns the filepath.
If you want to access the actual content of the file, you can do this:
test = s3.getObject(bucket,obj,region);
contentAsString = fileRead(test); // returns the file content as string
// or
contentAsBinary = fileReadBinary(test); // returns the content as binary (byte array)
writeDump(contentAsString);
writeDump(contentAsBinary);
(You might want to stream the content if the file is large since fileRead/fileReadBinary reads the whole file into buffer. Use fileOpen to stream the content.
Does that help you?
We are not able to call balanced.card.create from a Phonegap application. This is reproduced in a stock Phonegap application here: https://github.com/kevg/phonegap-balanced. Full details are in the README.md on github, but the basic summary is:
For those not familiar with phonegap, the main page that loads is
index.html. This initializes phonegap in index.js. When the device is
ready, we will show a hidden DIV with a button named "Execute
Balanced." When you click this button, app.executeBalanced in index.js
will be called which prompts for the balanced marketplace URI, loads
balanced.js with $.getScript, and then calls balanced.card.create with
a test credit card.
The expected result is that callbackHandler is called or an exception
is caught. Instead, it seems the execution of the Javascript thread
disappears into balanced.card.create, never to return and without any
error.
Alrighty, I found the bug in balanced.js. So, in Phonegap, window.location.href returns something like file:///.../index.html. Balanced.js creates an iframe to something like https://js.balancedpayments.com/proxy#file
var src = proxy + "#" + encodeURIComponent(window.location.href);
https://github.com/balanced/balanced-js/blob/master/src/utils.js#L48
In the script returned in proxy.html (which I can't find on github), it does:
c.parentURL=decodeURIComponent(
window.location.hash.replace(/^#/,"")
).replace(/#.*$/,"")
c.parentDomain=c.parentURL.replace(/([^:]+:\/\/[^\/]+).*/,"$1")
The regex doesn't match because file: has three slashes. Now, at first, I thought I could just convert the regex to:
/([^:]+:\/+[^\/]+).*/
However, then there's another problem, because balanced does a security origin check on the match:
if (d.origin.toLowerCase() !== c.toLowerCase()) return !1;
However, the regex returns file:///firstcomponent, whereas event.origin does not include a host name for the file scheme, so these won't match even with a fixed regex.
I can't change anything in the script returned in the proxy response because if I load that from a domain other than balancedpayments.com, then the AJAX POST fails (return code 0 with a blank body). Therefore, the only thing I can control is the hash passed to the iframe.
However, since this regex is a replace, we can simply pass exactly what we know we need (we don't care that the regex is a no-op).
Therefore, the solution is to change L48 above to:
var src = proxy + "#" + encodeURIComponent("file://");
This works.
So, using vb.net, I retrieve from my server the byte data for a file that the user wishes to download. I always know what the filename and extension is, but what I don't know is how to start downloading the byte data and in the proper file format. How do I got about doing this?
EDIT: Just to clarify, I already retrieve the data in byte format in code, I just need to download it as the proper file type which is also known. I'm keeping the URL to the file hidden at all times so it's never exposed.
If you want to download the file directly to the hard drive, the easiest solution is to use WebClient.DownloadFile. The MSDN page contains a nice example.
If you want to put the file into a byte array instead of a file on disk, use WebClient.DownloadData instead:
Dim myWebClient As New WebClient()
Dim myByteArray = myWebClient.DownloadData("http://...")
Again, a larger example can be found on the MSDN page.
If you want your program to stay responsive while downloading, check out the asynchronous versions of those methods.
EDIT: I'm still having a hard time understanding your situation, but it you already have a byte array and just want to write it to the disk, you can use File.WriteAllBytes:
File.WriteAllBytes("C:\my\path\myfile.bin", myByteArray)
Okay, I figured it out. Using BinaryWrite with the other Response functions like AddHeader and ContentType I got it to work. GetMimeType is a function I made. Code below:
Response.Clear()
Response.AddHeader("Content-Disposition", "attachment; filename=" + FileName)
Response.ContentType = GetMimeType(FileName)
Response.BinaryWrite(data)
Response.End()
Response.Flush()
Thanks to those who tried to help!
I'm using a Web Browser control in C# and I'd like to be able to plug in different URLs depending on other things that have happened in the program. How can I set the URL property to a string in the code? Can I convert a string to the System.Uri type?
string link;
string searchedtitle = "The+Italian+Job";
link = "http://www.imdb.com/find?s=all&q=" + searchedtitle + "&x=0y=0";
WbBrowser.Url = link; // This is what I don't know how to do
Something to that effect would be ideal, where I could change 'searchedtitle' within the program somewhere else and still have it run properly. Unfortunately, the Url property is of type System.Uri, and I only have a System.String.
WbBrowser.Url is of type Uri so you need to use
WbBrowser.Url = new Uri(link);
Note that setting the URL is exactly the same as calling the Navigate() function. Navigate takes a string as an argument as the URL, eliminating the step of converting your URL to a string.