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Full Discussion: awk function in handling quotes
Top Forums UNIX for Advanced & Expert Users awk function in handling quotes Post 302446134 by agama on Wednesday 18th of August 2010 12:26:19 AM
Old 08-18-2010
Your request for help is a bit confusing. I'm assuming that you want to take a string with comma separated values and convert the values into bar separated fields. Further, if the field is quoted, then it may contain commas which do not indicate a field. Thus:

Code:
"hello","how are you",doing?,are,you,"at,home,tonight","this,is a,test","of the system"

would be translated to:
Code:
hello|how are you|doing?|are|you|at,home,tonight|this,is a,test|of the system

If that is what you are looking for, then this sed programme will do it:

Code:
sed -E '
s/^([^",]+)/"\1"/;    # edit -- enables processing of your original file
s/^"/</;
s/"$/>/;
s/","/></g;
s/",/>/g;
s/,"/</g;
s/>([^<,]+)/><\1>/;
: try_again
s/>,([^,<]+)/><\1>/;ttry_again
s/></|/g;
s/^<//;
s/>$//'

It does not handle input with < or > characters. If you are not using a BSD or AT&T AST version of sed, then you'll need to replace -E with -r on the command.

Edit -- with small change, the original input you presented can be processed and passed to awk or other programme:

Code:
$cat t17a.data
311,"jone,abc",2000,manager
302,david,200,"president,ac"
"303",david,200,"vicepresident,ac"
"304",Charlie,400,"peon"


$t17 <t17a.data
311|jone,abc|2000|manager
302|david|200|president,ac
303|david|200|vicepresident,ac
304|Charlie|400|peon

Last edited by agama; 08-18-2010 at 01:40 AM..
 

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LEARN ABOUT REDHAT

igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)
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