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Check for spaces in input argument!


 
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# 1  
Old 02-06-2014
Check for spaces in input argument!

Hi guys,
I have created a csh script which allows user to pass input argument with the script like:
Code:
cluster_on_lev3.csh  -t <value> -p <value>
Example: 
cluster_on_lev3.csh  -t 2.3 -p 0.05

Now I want to create an error code where if user passes input argument without spaces , the code should exit. Example: cluster_on_lev3.csh -t2.3 -p0.05. In this situation where the space is missing after -t and -p, the code should exit.
Thank you very much in advance.
# 2  
Old 02-06-2014
Programming in csh is very much not reccomended. It is an obsolete and very faulty shell which people just refuse to stop using... These are not bugs but insurmountable design flaws. Every variety of UNIX comes with the Bourne shell, it wouldn't be UNIX if it didn't, you'd do well to learn it.

Show your code.
# 3  
Old 02-06-2014
The whole code is:
Code:
#!/bin/csh
if (${#argv} < 1) then
    USAGE:
    echo "USAGE: cluster_on_lev3.csh -dir <full_path Lev3 gfeat cope directory> [options]"
    echo "USAGE: cluster_on_lev3.csh -dir <full_path Lev3 gfeat cope directory> -t <value> -p <value> -c <value> -l <value> -h <value>"
exit -1 
endif
while ( $#argv != 0)
	set flag = $argv[1]; shift;
	switch ($flag)
	case "-dir":
	    set lev3cope = $argv[1]; shift;
	    breaksw
	case "-t":
	    set thresh = $argv[1]; shift;
	    breaksw
	case "-p":
            set pvalue = $argv[1]; shift;
	    breaksw
	case "-c":
            set conn_voxels = $argv[1]; shift;
	    breaksw
	case "-l":
            set zmin = $argv[1]; shift;
	    breaksw
	case "-h":
            set zmax = $argv[1]; shift;
	    breaksw
	endsw
end

I just want to put a check to make sure the sure is passing input argument with the space i.e -t 2.3 instead of -t2.3
# 4  
Old 02-06-2014
How does this work:
Code:
#!/bin/csh
if (${#argv} < 1) then
    USAGE:
    echo "USAGE: cluster_on_lev3.csh -dir <full_path Lev3 gfeat cope directory> [options]"
    echo "USAGE: cluster_on_lev3.csh -dir <full_path Lev3 gfeat cope directory> -t <value> -p <value> -c <value> -l <value> -h <value>"
exit -1 
endif
while ( $#argv != 0)
	set flag = $argv[1]; shift;
	switch ($flag)
	case "-dir":
	    set lev3cope = $argv[1]; shift;
	    breaksw
	case "-t":
	    set thresh = $argv[1]; shift;
	    breaksw
	case "-p":
            set pvalue = $argv[1]; shift;
	    breaksw
	case "-c":
            set conn_voxels = $argv[1]; shift;
	    breaksw
	case "-l":
            set zmin = $argv[1]; shift;
	    breaksw
	case "-h":
            set zmax = $argv[1]; shift;
	    breaksw
        default:
            echo "Unknown option" $argv[1]
            exit 1
            breaksw
	endsw
end

# 5  
Old 02-06-2014
The way it works is:
Example: If the user types:
Code:
cluster_on_lev3.csh -dir /home/shared -t 2.3 -p 0.05 -c 26 -l 2"

The above code checks for arguments such as -dir, -t, or -c in the Case statement and shifts to set the input variable passed by the user. I also have the part of the code to have the default values when the argument is not been used.
All I want is to prompt the user in case he didn't use the space with the argument. That is the code exits when user passed:
Code:
 cluster_on_lev3.csh -dir /home/shared -t 2.3 -p 0.05 -c26 (incorrect) -l2 (incorrect)

I understand moving away from csh is the best way and I am migrating to bash, but this is someone else's script and I have been asked to do modifications. Thanks for understanding.

Last edited by Scrutinizer; 02-06-2014 at 04:02 PM.. Reason: code tags
# 6  
Old 02-06-2014
Yes, so have you tried the script I gave you... It should flag any arguments it doesn't recognize.
# 7  
Old 02-06-2014
Hi, Sorry about this but I didn't receive any script from you. Pardon me if I have missed something in your email.

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