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Variable syntax and lines of code

 
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# 1  
Old 07-10-2008
Question Variable syntax and lines of code
I am trying to use use the AWK and EGREP commands together in an AWK script. My overall objective is to count lines of code but exclude comments and blank lines and such.

I am able to use AWK with the FIND command like so:

Code:
| awk '{print \"wc -l \"$1}' > lineCount.sh

Now when I modify the line to use EGREP, I get a 'Variable Syntax' error

Code:
"| awk '{print \"egrep -cv '^$|^[*]|^[ *]|^[//]|^#|[\\n]'  \"$1}' > lineCount.sh

Regular expressions are new to me and they seem to be a bit painful. Any help is appreciated.
# 2  
Old 07-10-2008
You already have a thread about this. What comments? C like /* */ or hashes like for shell scripts #?

Post some examples maybe.
# 3  
Old 07-10-2008
Quote:
Originally Posted by zaxxon
You already have a thread about this. What comments? C like /* */ or hashes like for shell scripts #?

Post some examples maybe.
I have a script that finds different file types and does a word count on them using AWK. I am trying to use EGREP instead to count the lines in the files. Right now, my task is to count lines for JavaScript files. here is my test file

Code:
************
* SLOC file test
************

var hipHop = false;
        # I want to see if I can get egrep working




// This is only a test.

temp = temp * 6;



/* Some function */

# 4  
Old 07-11-2008
Code:
root@isau02:/data/tmp/testfeld> cat infile
************
* SLOC file test
************

var hipHop = false;
        # I want to see if I can get egrep working




        // This is only a test.

        temp = temp * 6;



        /* Some function */
root@isau02:/data/tmp/testfeld> egrep -v "^$|^[[:space:]]*\*|^[[:space:]]*\#|^[[:space:]]]*\/" infile
var hipHop = false;
        temp = temp * 6;

You will have problems with comments like
Code:
/* here starts my
    comment and
    goes over
    several lines
    until this line     */

where you might want to use multiline patterns or addresses like /start/,/end/.
# 5  
Old 07-11-2008
Awesome. Now I tried adding that to the script and here is the result:
awk: syntax error near line 172
awk: illegal statement near line 172

And this is the line that fails me all the time.
Code:
outputString = outputString "| awk '{print egrep -cv "^$|^[[:space:]]*\*|^[[:space:]]*\#|^[[:space:]]]*\/ \"$1}' > lineCount.sh

Should there be a big difference with syntax in a script versus the command line?
# 6  
Old 07-11-2008
No offense, but I think you should take dig a bit deeper into learning to write shell scripts by some guide/howto/book, which will help a lot to write working code. There are plenty of good infos and guides about shell scripting on the web, but if you want some links, I can dig out what I have bookmarked.

Quote:
outputString = outputString "| awk '{print egrep -cv "^$|^[[:space:]]*\*|^[[:space:]]*\#|^[[:space:]]]*\/ \"$1}' > lineCount.sh
I am not sure what you are going to do, but if outputString has already some value like a String and you want to echo it, you need to write it like
Code:
outputString = `echo ${outputString} | awk .................... `

You should put your code to be executed in backticks or simple brackets so that it will be executed and assigned to the variablename in the front. Not sure, but maybe you want to assing the value to a different variable name, than that you are already using like (just a suggestion - not sure if you have your reasons to use it that way)
Code:
newString = `echo ${outputString} | awk .................... `

# 7  
Old 07-11-2008
If you are a professional, you really didn't need to post all that. Thanks for you help.
 
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