find/xargs/*grep: find multi-line empty "try-catch" blocks - eg, missing ; not in a commented block


 
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Old 03-12-2012
find/xargs/*grep: find multi-line empty "try-catch" blocks - eg, missing ; not in a commented block

How can I recursively find all files in a directory and print out the file and first line number of any text blocks that match the below cases?

This would seem to involve find, xargs, *grep, regex, etc.

In summary, I want to find so-called empty "try-catch blocks" that do not contain code inside them (do not contain a semicolon ';')

Below are the most simple to the most sophisticated cases I'd like to find.
Code:
// MOST SIMPLE - find catch(...) { //just white-spaces over possibly multiple lines }

    try(...)
    catch( match this catch block because there is nothing but white-spaces between the below '{' and '})
    {
                    
    }
        
// BETTER - find missing ';'
        
    try(...)

    catch()
    {
                match this because there is no semi-colon between the braces        
    }        
            
    try(...)
    catch(...)
     {
        do not match this, because it does contain a semi-colon here;
    }
          
    try(...)
    catch(match this)
    {
            
    }


// BEST - consider comment-blocks

    try(...)
    catch(...)
    {
        <!--- the <!--- and ---> are coldfusion tags that indicate a comment block.
 As such, we should match this line that *does* contain a ; because this ; is not actually part of any in-use code --->
    }

Moderator's Comments:
Mod Comment please use code tags

Last edited by jim mcnamara; 03-12-2012 at 12:09 PM..
 
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