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Extract fragments from file

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# 8  
Old 03-31-2014
To use the variables defined outside awk,
Code:
targetItem=string1
awk -v targetItem="$targetItem" "/measInfo/ || s {s=s?s\"\n\"$0:$0} /<\/measInfo>/{if (s ~ targetItem) print s; s=\"\"}" asd | wc -l

# 9  
Old 03-31-2014
Quote:
Originally Posted by SriniShoo
To use the variables defined outside awk,
Code:
targetItem=string1
awk -v targetItem="$targetItem" "/measInfo/ || s {s=s?s\"\n\"$0:$0} /<\/measInfo>/{if (s ~ targetItem) print s; s=\"\"}" asd | wc -l

You also need to go back to single quotes (or do some more escaping) so you can use awk's interpretation of $0 instead of the shell's interpretation of $0. And, if a line could every be a string just containing one or more zeros, you need to check for an empty string rather than assuming that s will evaluate to a zero value only when s is the empty string. Try:
Code:
targetItem=string1
awk -v targetItem="$targetItem" '
/<measInfo>/ || s != "" {s != "" ? s"\n"$0 : $0}
/<\/measInfo>/{if (s ~ targetItem) print s; s=""}
' asd | wc -l

These 2 Users Gave Thanks to Don Cragun For This Post:
black_fender SriniShoo
# 10  
Old 03-31-2014
Quote:
Originally Posted by Scrutinizer
You could try:
Code:
awk '... if (s ~ k) ... }'  k="string1" asd ...

--
If there is always an empty line between those xml segments (only then) you could use:
Code:
awk '$0~k' k="string1" RS= asd

Thank you, it worked
# 11  
Old 03-31-2014
@Don, your code is missing s=.
The following is more simple:
Code:
awk -v targetItem="string1" '
s!="" {s=s"\n"$0}
/<measInfo>/ {s=$0}
/<\/measInfo>/ {if (s ~ targetItem) print s; s=""}
' asd

This User Gave Thanks to MadeInGermany For This Post:
Don Cragun
# 12  
Old 04-16-2014
I have a new issue on this topic.
I've settled to this awk expression :

Code:
targetFile=log.xml
targetItem="string 1 string2"
awk '/<mi>/ || s {s=s?s"\n"$0:$0} /<\/mi>/{if (s ~ Item) print s; s=""}' Item=$targetItem $targetFile

I have problems in declaring Item variable which takes its value from $targetItem when $targetItem contains spaces. I tried to declare targetItem like this :
Code:
targetItem="string1\ string2"

but it doesn't work.
The awk expression takes "string2" as a value for $targetFile ....


...Nevermind I forgot to use double quotes :
Code:
awk '/<mi>/ || s {s=s?s"\n"$0:$0} /<\/mi>/{if (s ~ Item) print s; s=""}' Item="$targetItem" $targetFile

Applogize for taking your time with this.
Last edited by black_fender; 04-16-2014 at 09:55 AM.. Reason: Posted by mistake
# 13  
Old 04-16-2014
Try:
Code:
awk '....' Item="$targetItem" "$targetFile"

This User Gave Thanks to Scrutinizer For This Post:
black_fender
# 14  
Old 04-16-2014
Quote:
Originally Posted by Scrutinizer
Try:
Code:
awk '....' Item="$targetItem" "$targetFile"

Yes, thanks. That was it..
I saw that after I posted...
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