Hey there I just want to get file name without downloading the file ? Is there any way to do it ? I know we can just split the Url and then get it but its not it means not every link contains file name right ? Some link use headers and there is no way to get headers in MIT app inventor ? So how can I get the file name by the help of headers without downloading the file ?
Provide some example urls to demonstrate what you mean...
If using google drive, you could call a google apps script to return the filename using the fileId in the url...
I know it have file name on it but still many of them dont contains and they all provides header like here its header is :
{'Date': 'Thu, 08 Dec 2022 10:33:06 GMT', 'Content-Type': 'video/mp4', 'Content-Length': '11477289', 'Connection': 'keep-alive', 'Access-Control-Allow-Origin': '*', 'Cache-Control': 'public, max-age=86400', 'Content-Disposition': 'attachment; filename=Christmas - 141704.mp4', 'access-control-max-age': '86400'}
As you can see it contains Content-Disposition header which have filename=Christmas - 141704.mp4
"Link has expired"
Run the URL through a text reverse block then use the Taifun parse procedure with prefix ? and suffix /.
Reverse the result and undo any URL encoding.
For pixabay you may want to look at their RESTful api...
It maybe you will have to take a similar approach for other providers
Well i am trying to get file name form header : http://15.235.166.145/test/756 this one here it did't have any file name ... but if you make a head request then you can see filename in it ...
Nop its not working too means it only provides name on the link ....
but i solved it thanks for everyone i just create new extension to get the headers of the url and then get the data from there 
Here it is : com.maiis.utils.myutils.aix (66.1 KB)
2 Likes
I get this runtime error when testing in companion
Blocks:
Here an old extension: KIO4_Terminal.aix
Can you try
curl -X HEAD -I http://httpbin.org/
https://stackoverflow.com/search?q=html+get+header
to get HEAD?
Extension_Terminal.aia (19.3 KB)
https://community.appinventor.mit.edu/t/using-linux-commands-in-app-inventor-extension/6469
2 Likes
OK it works now (without runtime error) 
Does a good job of returning the filename somewhere in the headers returned from a google drive file ID.
I fed the header block with a url to an image from my own server (Apache).
e.g. https://mydomain.co.uk/timai2.png
This returned the header, although it did not contain the filename ? I know the filename is in the url, but was expecting to see it in the header...
possible that my Apache settings are blocking this / or just not required because of the filename being in the url.
Please remember the naming conventions...
onRequestComplete should be OnRequestComplete or just rename the event to GotHeader
Taifun
1 Like
yup well not all url contains file name on headers, but i will add a different block on next update where if file name is on url then it return that else it will try to find it on header , And also it make head request on server to get header but i will try to add different things on next update sure to get file name and size or other data too ...
Thanks, I am new at extension creating 
but I will change it very soon ...
This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.