I am using Swift Feed Parser for RSS feeds. Everything works fine except that I am unable to fetch the complete description. The description is under the <content:encoded> tag in my RSS feed. So how do I fetch that?
I am using this code given in their demo to fetch <description> tag:
if let subtitleLabel = cell.viewWithTag(3) as? UILabel {
subtitleLabel.text = item.feedContentSnippet ?? item.feedContent?.stringByDecodingHTMLEntities() ?? ""
}
Please help. I am using Xcode 8 and Swift 3.
So, let's try to suggest some hints on how to approach this:
First, the [...] was coming from the RSS feed <description> itself and not from the parser, so this one is solved
In order to extract instead the <content:encoded> tag from the feed you should I guess modify a little bit the feed parsing library, after quickly looking at it's source code, it doesn't seem to look for <content:encoded> anywhere
Your best bet would be to modify the FeedParser class here, especially the function parseEndOfAtomElement or similar (they have different parsers for each RSS feed type they support)
Please tell us if it worked.
Related
This is somewhat of a duplicate question of Does YouTube API forbid to download video captions if you are not it's owner?, Get YouTube captions and Does YouTube API forbid to download video captions if you are not it's owner?, which all basically say it's not possible unless to download captions via the YouTube API unless you are the owner or third-party contributions are not enabled; however, my question is how to sites like http://downsub.com/ or http://www.lilsubs.com/ have access to all captions?
In other words, when I access the YouTube API myself (even with youtubepartner and youtube.force-ssl scopes), I can only download the captions of some videos, but when I try the same videos that failed for me with 403: The permissions associated with the request are not sufficient to download the caption track. The request might not be properly authorized, or the video order might not have enabled third-party contributions for this caption. on these other sites, it works fine. I'm assuming they are using the YouTube API to access the captions, but what special sauce are they using? Some special partner key? An different API version? Are they just scraping from the videos themselves or something?
Send a GET request on:
http://video.google.com/timedtext?lang={LANG}&v={VIDEOID}
Example for your video in comment: http://video.google.com/timedtext?lang=ko&v=0db1_qWZjRA
Let's look at another example of yours, i.e. https://www.youtube.com/watch?v=7068mw-6lmI (and I agree about differentiation part in your comment).
There are multiple subtitles available for the video
English
Korean
Spanish
Korean (auto-generated) also called asr (automatic speech recognition)
These stand for the subtitle name parameter (i.e., name=English).
lang stands for the country code.
In your example: https://www.youtube.com/api/timedtext?lang=es-MX&v=7068mw-6lmI&name=Spanish
If subtitle track is available, it is possible to do translation form it, namely using tlang parameter.
https://www.youtube.com/api/timedtext?lang=en&v=7068mw-6lmI&name=English&tlang=lv
https://www.youtube.com/api/timedtext?lang=ko&v=7068mw-6lmI&name=Korean&tlang=lv
This would be my bid for what these sites are using, i.e. translation of the available subtitle track (confirm by trying to use a video without subtitle track as input for one of their sites).
As for asr signature seems to always be needed, but as long as one of the subtitle tracks are available, you could use that for translation. E.g. in your OP comment example:
https://www.youtube.com/api/timedtext?lang=en&v=vx6NCUyg1NE&tlang=lv
Looks like the last example is special with both of subtitle tracks being asr (checked with Chrome -> Inspect -> Network) therefore you need to omit the subtitle name parameter part. This difference unfortunately is not visible in YouTube video's settings wheel.
A 2022 answer:
Option 1: Send a curl request to the webpage: curl -L "https://youtu.be/YbJOTdZBX1g", search for timedtext in the result, and you would get a URL. replace \u0026 with & and you get the link for the subtitle.
Option 2: Use the yt-dlp package:
# For installing see: https://github.com/yt-dlp/yt-dlp#with-pip
from yt_dlp import YoutubeDL
ydl_opts = {
"skip_download": True,
"writesubtitles": True,
"subtitleslangs": ["all", "-live_chat"],
# Looks like formats available are vtt, ttml, srv3, srv2, srv1, json3
"subtitlesformat": "json3",
# You can skip the following option
"sleep_interval_subtitles": 1,
}
with YoutubeDL(ydl_opts) as ydl:
ydl.download(["YbJOTdZBX1g"])
There is this unofficial API used by Youtube :
https://www.youtube.com/api/timedtext?lang={LANG}&v={VIDEO_ID}
LANG here is ISO 639-1 2 letter country code. For your example it would be :
https://www.youtube.com/api/timedtext?lang=ko&v=0db1_qWZjRA
You can check it in network tab while toggling the closed caption button :
I have used youtube-transcript-api successfully to retrieve transcripts. The below is a demo to dump the transcript into HTML with links back to the timestamps in the video:
import sys
from youtube_transcript_api import YouTubeTranscriptApi
video_id = sys.argv[1]
# Retrieve the available transcripts
transcript_list = YouTubeTranscriptApi.list_transcripts(video_id)
# Just use the first transcript, let it raise an exception if none exist.
transcript = next(iter(transcript_list))
print("<html><body>")
for line_map in transcript.fetch():
st_sec = int(line_map['start'] / 60)
st_msec = int(line_map['start'] - st_sec * 60)
tstmp = f"{st_sec}:{st_msec}"
link_to_tstmp = f"https://youtu.be/{video_id}?t={st_sec*60}"
tstmp_str = ("%2d:%-2d" % (st_sec, st_msec)).replace(" ", " ")
#print(f"{st_sec}:{st_msec} {line_map['text']}")
print("""%s %s<br/>""" % (link_to_tstmp, tstmp_str, line_map['text']))
print("</html></body>")
If there are multiple transcripts, the library provides API to search by language etc.
You can further tweak the logic to merge text so you only get one link every so many minutes. I got good results for a lecture by linking at every 1 min and format the lines into a HTML table.
I tried to parse the "media:group" tag manually or via FeedKit swift. But getting the nil response for this. Please let me know how to parse this tag.
This is url of rss feed http://www.rollingstone.com/music/rss and format is like this
<media:group>
<media:content url="http://img.wennermedia.com/featured/rs-jb-5db24d0d-72d6-4f17-b7b8-0aa192b13dc3.jpg"/>
<media:content url="http://img.wennermedia.com/article-leads-vertical/rs-jb-5db24d0d-72d6-4f17-b7b8-0aa192b13dc3.jpg"/>
<media:thumbnail url="http://img.wennermedia.com/reading-list/rs-jb-5db24d0d-72d6-4f17-b7b8-0aa192b13dc3.jpg"/>
</media:group>
media is namespace in xml language, tag name will be group.
If it's important to know tag namespace, then you should enable shouldProcessNamespaces and shouldReportNamespacePrefixes in NSXMLParser.
So I've search everywhere. Xamarin Docs, goggle, here, W3.
All I need to do is store some small data in an XML file.
I created the XML, got the code lined up and when i go to build it.
IOS.....Can't find file.
I've googled the answer countless times, and they all say the same thing, Make sure it is set as Content or make sure it is "Embedded Resource" I've tried it both ways, It can't find the file to access it. Is IOS really that stupid? No issues in Android, took it 30 secs. Add it to the Assets and boom there it is.
But How to get IOS to Recognize xml file(find it)?
the code is this
XDocuent doc = new XDocument.Load("StoredLogs.xml") <that line is where it throws the error, through all the break points that it is.
After this it steps through a loop to bind the data in the xml to an object
Logs a.Id = x.Element("Id).Value......
a.name......... and so
All i want is basic offline storage.
iOS really that stupid?
Yes :P
When you add the XML file as an EmbeddedResource, you need to read it from the assembly instead of the path
For example:
var readme = typeof(NameSpace.App).GetTypeInfo().Assembly
.GetManifestResourceStrean("resourcename.xml");
using (var sr = new StreamReader(readme)) {
//Read the stream
}
I'm all new to Xamarin and I'm currently working on a sample or a "prove of concept" app using Xamarin.Forms.
I'm supposed to perform a print task from this app though I'm not at this point sure what to print yet (the screen, content of a label, a file etc.).
Either way, what is the easiest way to print from a Xamarin.Forms app?
(current target is primarily Android 4.4+).
I hope this isn't too complicated :)
EDIT:
Ok let me just update this post as the original text might be a bit ambitious/vague.
I have a Xamarin.Forms project (+ an Android part) and I have some HTML available in the XF part of the project that I need to get into a WebView and print it.
From what I understand, the thing with the WebView has to be done on the Android part of the project due to the fact that this is where the printing will be handled.
I was hoping this could be done from code since I don't really need to display the WebView, just print it's content.
The Android part of the project has only the MainActivity and no layouts or XAML files.
I don't know where to add the WebView or how to access it (other than DependecyService seems to be a buzz word here) so I'm kinda stuck here.
I'm thinking that this task should be rather trivial to someone with a little more Xamarin experience than me.
Every platform XF supports has it's own mechanism for printing. XF does not provide any abstractions for printing in a cross-platform manner. You will need to write printing logic for each layer and expose it to XF using DependencyService (or some other DI engine).
Here is a good example, of course, using dependency service:
https://codemilltech.com/xamarin-forms-e-z-print/
I so wanted to do this but it was too hard. Finally built it into Forms9Patch - a MIT licensed open source project.
Verifying that Printing is available
Before printing, you should verify that printing is available on your device. To do so, call:
if (Forms9Patch.PrintService.CanPrint)
{
// do the printing here
}
Print the contents of a Xamarin.Forms.WebView
using Forms9Patch;
...
var myWebView = new Xamarin.Forms.WebView
myWebView.Source = new HtmlWebViewSource
{
Html = "some HTML text here"
};
...
myWebView.Print("my_print_job_name");
Note that your WebView does not have to be attached to a Layout. This allows you to Print without having to display the WebView in your app’s UI.
Printing an HTML string
using Forms9Patch;
...
var myHtmlString = #"
<!DOCTYPE html>
<html>
<body>
<h1>Convert to PNG</h1>
<p>This html will be converted to a PNG, PDF, or print.</p>
</body>
</html>
";
...
myHtmlString.Print("my_print_job_name");
PLEASE NOTE: iOS sometimes places the page breaks in weird places. I have a StackOverflow Bounty on why this happens and how to fix it.
Using EmbeddedResource as a source for a Xamarin.Forms.WebView
This is sort of an experimental feature I’ve built that I’ve found it useful. As such the documentation is sparse. It allow you to put HTML content in a folder in your app’s EmbeddedResources folder and then use it as a source for a WebView. A much nicer solution than using platform specific approach provided by Xamarin. It also supports putting all of the HTML content into a zip file. Please take a look at the source code to see how it works.
You can handle the printing of lists/ invoices .. with the xfinium pdf component from xamarin componentstore. With that you create your _pdffile and then call the following method which starts the adobereader from where you can select a printer (in my case google cloudprint)
public void printPdfToCloud(string _pdffile)
{
try
{
var saveto = System.IO.Path.Combine(Android.OS.Environment.ExternalStorageDirectory.ToString(), "YourApp/"+_pdffile);
string file_path = saveto;
if (System.IO.File.Exists(file_path))
{
Android.Net.Uri pdfFile = Android.Net.Uri.FromFile(new Java.IO.File(file_path));
Intent pdfIntent = new Intent(Intent.ActionView);
pdfIntent.SetPackage("com.adobe.reader");
pdfIntent.SetDataAndType(pdfFile, "application/pdf");
pdfIntent.SetFlags(ActivityFlags.NoHistory);
StartActivity(pdfIntent);
}else
{
// give a note that the file does not exist
}
}
catch (Exception E)
{
// Do some Error dialog
}
}
I'm making some Animation project with Macromedia Flash 8, which uses ActionScript 2.0. I need some simple options like to save user to text file and read it. But, I couldn't find about writing to text file. Found some code that reads, but not writes.
Example of reading:
loadText = new LoadVars();
loadText.onData = function(raw) {
myField.text = raw;
}
loadText.load("user.txt");
Can someone help me, with examples of writing, parsing read data. Shortly, Working External data.
I appreciate any help that you can provide.