I am passing several skip arguments to msdeploy in order not to synchronize(Delete and Update) some directories and files
-skip:skipAction='Update',objectName='filePath',absolutePath='.*\\documents\\.*'
It does not seem to work, some directories and files get deleted.
I am pretty sure there's no problem in the regular expression given to the absolutePath
Can anyone please clear up how the matching works for the skip rules?
It is clearly not working according to the regular expression and objectName.
Look here:
http://forums.iis.net/p/1192163/2031814.aspx#2031813
The way skip rules are applied is based on the order of the synchronization operation(delete, update, add) is done on the actual object(directory or file).
For example, if there's a delete operation on the directory, the skip rules for files within the directory for the delete operation will NOT PREVENT files from being get DELETED!
In my case, the directory MySite\MobileForms get deleted entirely. The skip rule I set for the files is useless.
And for the directory, my mistake is in the regular expression:
-skip:skipAction='Delete',objectName='dirPath',absolutePath='.*\\MobileForms\\.*'
Should be:
-skip:skipAction='Delete',objectName='dirPath',absolutePath='.*\\MobileForms$'
which says that it should skip deleting directory path MobileForms(the first rule erroneously included slash in the regular expression).
Hope this helps others as well.
Related
I'm trying to find the parent directory of a user-given string str to check if it exists. I can find this easily with (file-name-directory str). My issue is I also want to get the parent directory if they pass something with a trailing slash, like "~/Projects/newdir/" would hopefully get "~/Projects/" spit out instead of "~/Projects/newdir/". I can't seem to find anything like this inside the Emacs documentation.
I believe you are looking for directory-file-name.
See also Walk up the directory tree and Function that returns parent directory absolute path.
How do I see if a file exists without exceptions using Julia? I want to make sure that my program does not crash if for some reason the file I am trying to open is not accessible, has been deleted, or does not exist.
There are two simple ways of doing so.
First:
println(isfile("Sphere.jl"))
false
This isfile() function will simply check if the file exists. Note: if Sphere.jl is not in your current file path, you would need to provide the absolute path to get to that file.
Second (more of a trial by fire example):
try
open("Sphere.jl", "w") do s
println(s, "Hi")
end
catch
#warn "Could not open the file to write."
end
The second example utilizes the try-catch schema. It is always best for your program to not have to deal with errors so it's recommended that you use isfile() unless you have to use try-catch for your use case.
It's worth noting that there may be some cases where the file exists, but writing to it is not possible (i.e. it's locked by the os). In that case, using try-catch is a great option when attempting to write.
What would be the best practice - if there is any - to parse multiple config files?
I want to parse the mysql server configuration and also write the configuration again.
The configuration allows to issue multiple lines like:
!includedir /etc/mysql.d/
So the interesting thing is, that some configuration may be located in the main file but other may be located in a sub file.
I think pyparsing only works on ONE single file or one content string.
So I probably first need to read all files and maybe restructures the contents like adding headers for the different files...
====main file====
[mysql]
....
!includedir /etc/mysql.d/
====/etc/mysql.d/my.cnf====
[client]
.....
I would only have one pyparsing call.
Then I could parse everything into one big data object, group the file sections and have the file names as keys. This way I could also write the data back to the disk...
The other possibility would be to parse the main file and programmatically parse all other files that were found in the main file.
Thus I would have several pyparsing calls.
What do you think?
In your pyparsing code, attach a parse action to the expression that matches the include statements, have it parse the contents of the referenced files or directory of files, then merge those results into the current parse output. The parse action would make the successive calls to parseString, your code would only make a single call.
See this new example added to the pyparsing examples directory: https://github.com/pyparsing/pyparsing/blob/master/examples/include_preprocessor.py
I have a QDialogBox where there is an option to upload a file.
I can upload files and save them to a folder. It works fine.
But if in case there is a file that already exists in the folder, I am not sure how to handle that scenario.
I want to warn the user that the file with same name already exists.
Is there a Windows API that I can use in this case? (because when we manually save an existing file, we get a warning, how can I use that?)
If someone can point me to that documentation, it will be great.
If you are using a QFileDialog, confirmOverwrite is activated by default, so, if getSaveFileName() returned a non-empty QString, then that means the user accepted to overwrite the file. Other way, you get an empty QString.
Then, you can check if the file exists, and remove it in that case, but you know that the user was Ok with that.
There is always a potential race condition when saving files. Checking to see if the file exists first is not safe, because some other process could create a file with the same name in between the check and when you actually write the file.
To avoid problems, the file must be opened with exclusive access, and in such a way that it immediately fails if it already exists.
If you want to do things properly, take a look at these two answers:
How do I create a file in python without overwriting an existing
file
Safely create a file if and only if it does not exist with
python
You can use QDir::entryList() to get the file names in a directory if you're not using a QFileDialog.
QDir dir("/path/to/directory");
QStringList fileNames = dir.entryList();
Then iterating through file names, you can see if there's a file with the same name. If you need it, I can give an example for that too. It'd be C++, but easily adaptable to Python.
Edit: Smasho just suggested that using QDir::exists() method. You can check if the file name exists in the directory with this method instead of iterating like I suggested.
if(dir.exists(uploadedFileName))
I am after the one which is most used. A number of ones I have come across are:
CurDir
Environment.CurrentDirectory()
AppDomain.CurrentDomain.BaseDirectory
Application.StartupPath (this one doesn't work for me, missing a library?)
I am using it to save a file, for argument sake, "test.txt"
I may be oversimplifying, but if you want to save something in the folder where your app is running, just omit the path.
call MyObj.SaveTo("test.txt")