File names with spaces used as command line arguments
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Andrew Newell
el 25 de Jul. de 2014
Comentada: Andrew Newell
el 30 de Jul. de 2014
I am trying to run an external program with command line arguments. The syntax is like this:
bertini <inputFile> <startpointFile>
The problem is, if one of the files in the command line has a space in its name, I can't get it to work. For example, if commandStr = 'bertini paramotopy.input /Users/my folder/start', then
[status,result] = system(str)
returns an error because bertini thinks the startpoint file is /Users/my.
I have not been able to make any of the usual suggestions involving backslashes or double quotes work for this example. I need it to work for both Windows and Unix-based systems.
Comment added: Bertini is not a Matlab executable; it is an entirely separate product that was written in C. Unfortunately, I don't have the option of altering its code. Sorry for the misunderstanding - it didn't occur to me that people would assume this.
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Image Analyst
el 25 de Jul. de 2014
Try this, where I was trying to accept a foldername, that contained images, via the command line of a compiled executable:
if isdeployed && ~isempty(varargin)
% For some reason, it won't take the command line as a single item, even if it's in double quotes.
% It splits it up and gets rid of leading and trailing spaces so that
% "D:\word1 word2\theUser\Images"
% becomes 2 cells:
% varargin{1} = "D:\word1
% varargin{2} = word2\theUser\Images"
% We need to join all these together.
numberOfCells = length(varargin);
if numberOfCells >= 1
commandLineArgument = varargin{1};
for k = 2 : numberOfCells
thisWord = varargin{k};
% fprintf(1, 'varargin{%d} = %s\n', k, thisWord);
commandLineArgument = sprintf('%s %s', commandLineArgument, thisWord);
end
% Get rid of any quotes.
commandLineArgument = strrep(commandLineArgument, '"', []);
fprintf(1, 'The argument passed in on the command line is %s\n', commandLineArgument);
% msgboxw(['The argument passed in on the command line is ', commandLineArgument]);
if exist(commandLineArgument, 'dir')
% If this folder exists, use it.
handles.imageFolder = commandLineArgument;
fprintf(1, 'Changed image folder to this: %s\n', handles.imageFolder);
else
fprintf(1, 'This folder does not exist, so we cannot change to it:\n %s\n', commandLineArgument);
end
end
fprintf(1, 'handles.imageFolder = %s\n', handles.imageFolder);
end
Más respuestas (3)
Robert Cumming
el 25 de Jul. de 2014
Editada: Robert Cumming
el 26 de Jul. de 2014
try putting " around the command,
commandStr = '"bertini paramotopy.input /Users/my folder/start"'
edit
So the problem is running the bertin code - I would first try to get that working on its own from the command line the way you want it to (it might not be possible...) then transfer that methodology into the system command.
The input parser for your c code is space delimited - so it will be interpreting your 2 commands as 3 (since the 2nd has a space in it...).
2 comentarios
Robert Cumming
el 25 de Jul. de 2014
ah sorry misunderstood. try single quotes or can you pass a file in. Ultimately this is an issue with bertini api and not really matlab
Sean de Wolski
el 25 de Jul. de 2014
Perhaps try the ! operator:
!bertini paramotopy.input /Users/my folder/start
2 comentarios
Image Analyst
el 25 de Jul. de 2014
Editada: Image Analyst
el 25 de Jul. de 2014
Did you try what I showed you? Assuming "bertini" is the MATLAB-code executable that you compiled into a standalone executable, and are trying to pass in arguments for, I know for a fact that this will work. I've been through what you're going through and basically I had to "rebuild" the command line from the parts. I know it works because I use it in my systems all the time.
per isakson
el 25 de Jul. de 2014
This should work at least on Windows
commandStr = 'bertini paramotopy.input "/Users/my folder/start"';
[status,result] = system( commandStr );
if not what does result say?
5 comentarios
per isakson
el 26 de Jul. de 2014
Editada: per isakson
el 26 de Jul. de 2014
I would try
bertini paramotopy.input "/Users/my folder/start"
at Windows Command Prompt (the DOS window).
Image Analyst
el 26 de Jul. de 2014
Good suggestion. If it fails, then we know it has nothing to do with MATLAB and it's all bertini's fault.
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