Shell Programming and Scripting

 
 
 
file1.txt
--------
 
//START
//Name: some value
//Date:
//Changes:.............
//.....................
//END
//START
//Date:
//Name: some value
//Changes:.............
//.....................
//END

Name |Date|Changes

awk '
BEGIN{print "Name |Date|Changes"}
/Name:/    {$1="";n=$0}
/Date:/    {$1="";d=$0} 
/Changes:/ {$1="";c=$0}
/END/      {print n " | " d " | " c;n=d=c=""}
' file1.txt

file1.txt
---------
 
//START
//Name: some value
//Date:
//Changes:Change A
//more of change A
//END
//START
//Date:
//Name: some value
//Changes:This is change b
//And some more info
//END

fixfile.awk
-----------
BEGIN {
    FS=":" ; OFS="|"
        num=split("Name,Date,Changes",cols,",")
        print cols[1],cols[2],cols[3]
}
{
   $1=substr($1, 3);
   s=$2
   sub(/^ */, "", s);
   if ($1 == "END") print res[1], res[2], res[3]
   else {
       if (res[3] != "" && NR=1) res[3]=res[3]" "$1
       for(i=1; i<=num; i++) {
           if (cols[i] == $1) res[i]=s;
       }
   }

$ awk -f fixfile.awk file1.txt
Name|Date|Changes
some value|23rd June 2009|Change A more of change A
some value|16th May 2010|This is change b And some more info

   $1=substr($1, 3);
   s=$2
   sub(/^ */, "", s);

START
Name: some value
Date:
Function Name: kakjkldj
asdkjfkjlfj
Changes:Change A
more of change A
END

Name |Date|Function Name|Changes