doesnt write on file

[tschomacker]

I am unable to write on files via Erlide. The following function wrote flawless on the file with Erlang OTP, but in erlide it doesnt do any thing:

printG(Graph,Filename) -> EdgeList = getEdges(Graph), IsDirected=util:getglobalvar(yndirected), NewNewFilename=atom_to_list(Filename)++".dot", if IsDirected==directed -> %% directed graph file:write_file(NewNewFilename,"digraph { " ++ printDEL(EdgeList),[write]); true -> %% undirected graph file:write_file(NewNewFilename,"graph { " ++ printUEL(EdgeList),[write]) end, io:fwrite("Graph written to " ++ NewNewFilename ++ "\n").

%% Prints edgelist of an directed graph to a .dot file printDEL([L, R, Weight | Rest]) -> toString(L) ++ " -> " ++ toString(R) ++ " [ label =\"" ++ util:to_String(Weight) ++ "\" ]" ++"\n" ++ printDEL(Rest); printDEL([]) -> "}".

[vladdu]

That is weird. Is just the writing to that doesn't work? That is, is the "Graph witten to..." message being printed in the console? BTW, what version of erlide?

[vladdu]

It works for me. What is your cwd() in the Erlang shell? I think the problem is that the default value is the eclipse installation directory, instead of the project's directory (which would be the expected value). Can you please confirm that the files are created in cwd()?

[vladdu]

Actually, the reason the cwd() is in the workspace root is that one can start an Erlang runtime on multiple Erlang projects, and then there is no other common place.

You should not rely on the cwd() being in a specific place, it will depend on where Erlang was started from. I would have the file name be a full path, so that I can specify exactly where the file is created.

Please confirm that your files are in the eclipse workspace directory.

[tschomacker]

e. g. "Graph written to file.dot" is the ouput but there is no file.dot wheter in src or in ebin. My source files are in src and the beams are in ebin. cwd() results in "** exception error: undefined shell command cwd/0". I have Eclipse Oxygen and Erlide 0.52.1 Thanks for your fast reply and I apologize for replying so late.

[vladdu]

I'm sorry, it shoulf be pwd().

[tschomacker]

pwd() resulted in "C:/Windows/system32", I checked there is also no file.dot (probably lack of rigths). Is there a way to change the working directory permanently? Or even better: That the project directory is automatically the working directory?

[vladdu]

You can do cd("dir"). to see.

Go to Run->Run configurations and find the one for your Erlang project. On the runtime tab there is a "working directory" field. You can set a different value there -- but I notice now that the value seems to be ignored. I will check that.

[tschomacker]

I checked for the value, it is my eclipse workspace. But there is also not a file.dot file. I changed it to another folder but still no file.dot file. It really appears to be ignored.

[vladdu]

I will fix that.

Does it work if you cd() into another directory where you can write?

[tschomacker]

Yes, that worked.

[vladdu]

Ok, then the working directory being ignored is the only problem. I will fix it.

[vladdu]

The fix will be available shortly in a nightly build. You need to go to "run->run configurations" and remove the existing erlang configuration(s) so that they can be recreated.