I have a question for you monksters out there, I want to parse the followin file below. Now from the contents of this file I want to match the VALUEx string as the key field. So VALUE1 VALUE2 VALUE3 VALUE4 all need to be key match. Adding to this. I want to associate attributes (CAUSE, AFFECT) for each type whether they exist or not in the TYPE 

// HEADER TAG
// VERSION TAG

TYPE VALUE1 EQUALS MAIN
I am useless text
CAUSE FAIL
AFFECT ERROR
ENDTYPE

TYPE VALUE2 EQUALS MAIN
I am useful test
ENDTYPE

TYPE VALUE3 EQUALS MAIN
CAUSE DEGRADED
ENDTYPE

TYPE VALUE4 EQUALS MAIN
AFFECT WARNING
ENDTYPE

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So the OUTPUT from the above file should resemble the following 

(TYPE):(CAUSE),(EFFECT)
VALUE1:FAIL,ERROR
VALUE2:UNDEF,UNDEF
VALUE3:DEGRADED,UNDEF
VALUE4:UNDEF,WARNING

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UNDEF meaning that particular attribute was not defined in the TYPE for that specific VALUE

Below is a snippet of associated code so far which is not working because I need to somehow create an array of attributes and associate them with the key Type 

my %results;

open(FH,"<$weblog") || die ("cannot open file");


while (<FH>){

    next if ($_ =~ /^\//);
    next if (/^(\s)*$/);

    if (/^TYPE\s(\S+)\s\S+\s\S+/){
        $key = $1;}
        
    if (/^CAUSE\s(\S+)/){
        $cause = $1);}
    else{
        $cause = "UNDEF";}

    if (/^AFFECT\s(\S+)/){
        $affect = $1;}
    else{
        $affect = "UNDEF";}

    

    $results{$key}= join "," => $cause => $affect;

}


    for (sort keys %results) {
        print "$_:$results{$key}\n";}


    close (FH);

[download]

In reply to File Parsing and Pattern Matching by Mark.Allan

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