Is it possible to change the file creation date or file last write date from managed code in WP8?
I can read the date stamps using FileInfo, but these properties are read only. Using native code it looks like I can use the SetFileInformationByHandle api. My project does use native code so I can add a little helper function, but this seems like a lot of over kill.
Reason: I've got an online multiplayer game (4sFear) that lets people upload their own avatars. Currently I just set the source of an image to the http address of the avatar but I would like to be a little smart and cache the images locally. I can return the last time an avatar was updated before it needs to be displayed. I know I can store the dates that the avatars were updated separately, but it makes sense that I should just be able to set the last write date of file after creating it.
The SetFileInformationByHandle API is supported via DLL api-ms-win-core-file-l1-2-0.dll More info here: https://msdn.microsoft.com/library/windows/apps/jj662956%28v=vs.105%29.aspx#BKMK_ListofsupportedWin32APIs which can be called using DLLImports.
I don't have a machine to test but you could try the following: How to update the change time of a file from c#?
Related
Good evening,
I am currently developing a way to import machine created data from a csv sheet into a database.
The question I have is, is there a way to react to a change in a csv file with Lua.
The file gets a line in this format:
17162H,"801234500001",9/23/2016 12:33:30 PM,"INV"
Every time a scanner is finishing a scan process, added under the old lines, but there is no direct connection to the database, to trigger the script.
It doesn't matter if the change is detected via different file size, foldersize (of the folder that contains the file) or a change within the file information (like date of last opening), but I can't open and read in it permanently due performance reasons.
Also this is the first time I ask here, so sorry for my clunky way, I'll try to improve myself with that over time.
Take a look at linotify, it has lua bindings for inotify and looks like it should do the trick, using the "modify" event to trigger your script.
I use LibUV based variant in my spylog apllication
Usage:
file_monitor(path_to_file, {eol = '\r?\n'}, function(line)
...
end)
If you need to run this on Windows, you can use winapi library, which supports file watchers. Here is an example of how it's used in one of my projects; you'll need to call winapi.sleep() to allow time for the check to trigger.
I'm currently familiarizing myself with Google BigQuery by working through the examples at https://cloud.google.com/bigquery/web-ui-quickstart. Doing a query over the pubic datasets runs fine.
I run into problems when uploading custom data into a new table through the WebUI. I create a new dataset and table, and upload the csv file provided with the example case. As in the example I input the schema and submit the file. Now the upload window stays on top and turns grey as if it's working. Nothing seems to happen afterwards though. When clicking away the upload window after a long wait, the table seems to be created in the tree on the left. However, when clicking on the table an error is shown:
"Unable to find table: ndwtest-984:csvtest.csvdata"
This seems like a trivial action, however I cannot seems to get it to work. I've tried varies different files, uploaded the file to Google Cloud Storage first and played around with the advanced options the last two days, but keep getting the same error.
Help would be much appreciated.
Some steps to help you:
billing must be enabled
you need to choose to upload one single TXT file from the example eg: yob2013.txt and not the zip file
make sure the schema is entered as text: name:string,gender:string,count:integer
on the last screen of the wizard you don't need to change the default CSV option parameters (for demo purposes works as it is)
I just tried the example, and it does work for me. In case you still have errors, than you can check your Job History menu in the Web UI, direct link would be, warning you need to put your Id in the link.
https://bigquery.cloud.google.com/jobs/YOUR_ANONYMOUS_PROJECT_ID_HERE?pli=1
I have been asked to update a system where header information gets injected into a tif via a 3rd party console application. I don't need to worry about that bit.
The part I have been asked to look at it the merge process that generates the header information.
The current file generated by the process is assumed as correct, before I make any changes, so I want to add this as an approved result, from that I can then check that the changes I make will alter the file as expected.
I thought this would be a good opportunity to look at using ApprovalTests
The problem I have is that for what ever reason the links to the videos are considered corruptible (Possibly show me kittens jumping into boxes or something, which will stop me working, which ironically means I slow down my work done because I cannot see any help videos).
What I have been looking at is the Approvals.Verify and Approvals.VerifyFile extensions.
But what appears to be happening is confusing me.
using VerifyFile creates a received file, but the contents of the file are just a line the name of the file I have asked it to verify.
using Verify(new FileInfo("FileNameHere")) does not appear to generate the received file that I need to flag as approved, but the test does return saying that it cannot find the approved tif file.
I am probably using VerifyFile completely wrong and might be looking at using Verify wrong as well.
useful info?
Might be useful to know, that as this is a legacy application, running as a windows service, I have wrapped the service in a harness that allows me to call the routines, so the files are physically being written elsewhere on the machine outside of my control (well there is a config, but the return of the service I call generates a file in a fixed location if it is successful). I have tried copying that into the Unit Test project, but that doesn't appear to help.
Verify(File) and VerifyFile(string) are both meant to verify an existing file. As such they merely setting the received file to the file you pass in. You will still need to move/approval/create the approved file.
Here is the pseudo code and process.
[UseReporter(typeof(DiffReporter), typeof(ClipboardReporter)]
public void TestTiff()
{
string tif = YourProcessToCreateTifFile();
Approvals.VerifyFile(tif);
}
[Note: if you don't have an image diff installed, like TortoiseDiff, you might want to use the FileLauncherReporter]
Run this, once you get the result, move the file over by pasting your clipboard into a cmd window.
It will move the temporary tif to your test directory with the name ClassName.TestTiff.approved.tif
After that the test should pass until something changes.
Happy Testing!
I dont know if this is possible, but i have an SWF file which i want it to get info from an xml file only one time and then store it(keep it) there until a "newer" data will push into it
I know it sounds stupid but maybe there is a solution i don't know of...
1) i don't want to load the xml every time because of loads of traffic we have(a lot...will cost a lot to refresh everytime from amazon s3)
but how do we get a newer data without checking the external xml file?
2) if there was a way to broadcast(to "ping") to the swf that an update of the xml is ready to load....
if anything i believe there should be an AS3 script for that.
thanks!
but how do we get a newer data without checking the external xml file?
You could implement data file versioning. For example: urlToXmlData + "?version=" + myCurrentVesion As soon you ship new version of the application with extended data, it will work. It's global solution, so every new version of your product will work with latest data.
As for ping, you could create update strategy, for example: link is valid for 1 day. Idea is the same, concatenate stuff to the link, so browser will evaluate it as new: urlToXmlData + "?stamp=" + timestampForToday Tomorrow will be another timestamp, and browser will download updated version.
Use second xml which will contain the version first xml
I think you don't get the real subject.
You can't update a flash project without using any external update platform.
Because you cannot save all new XML data to a shared object because of "limitation of mb per data", so, flash going to delete all loaded data when application closed.
You cannot make a "permament update" in flash for "big files"...
BUT
You can update your main swf file with "EMBEDDED XML" files. Only that keeps your data updated when application is closed.
BUT that's not enough alone, also you need a "PRE-CHECK for Version of SWF" file, and that's what you can't do alone. You need a web platform featuring that way.
Mochi's "Live Updates" was offering that, but i couldn't make it work. But mochi is shutdown now... So forget about it...
I understand that your XML is BIG and you want to save trafic.
But how about small calls ?
You can have a call just to get the MD5 of your xml which is stored on the server.
Something like: myserver.com/getMD5
Once the server will return you a different md5 than the one you have already stored, then you reload xml and save new MD5.
I am making a code completion system for a code editor, and i would like to show a tooltip for every parameter containing its reference data. I would like to emulate the code completion from Eclipse, so i was wondering if the API reference is available in code, or if i have to manually import it using the file system or something like that.
You could reflect the current class in question with flash.utils.describeType
This will return a xml with informations about methods, properties and so on.
This can be very heavy. If you use it all the time, try to use a caching system. The Flex framework has a class for it mx.utils.DescribeTypeCache