sed & areas respectively sed & pyramiding

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# 1  
Old 10-07-2009
sed & areas respectively sed & pyramiding

Hello everyone,

i wonder if someone could give me an advice regarding the following problem using sed.

Given ist a structure as shown below:

Now I want to change the outer tag from "aaa" to "new" and replace all tags inside the outer tags using underscores:

The text has different length, the number and the names of the tags inside the outer tags differ.

Is it possible to do this using sed?

Unfortunately I am new to sed and this is too diffucult for me... Smilie

Thx in advance and greetings from Germany

# 2  
Old 10-07-2009
echo '<aaa>text1<b>text2</b>text3<c>text4</c>text5</aaa>' | nawk -F'[<>]' -v OFS='' 'for(i=2; i<=NF; i+=2) $i=(i==2 || i==(NF-1))?"<new>":"_"; print}'

# 3  
Old 10-07-2009
# echo '<aaa>text1<b>text2</b>text3<c>text4</c>text5</aaa>' | nawk -F'[<>]'  '{for(i=2; i<=NF; i+=2) $i=(i==2 || i==(NF-1))?"<"(i==(2)?"":"/")"new>":"_"}1' OFS=''

Last edited by danmero; 10-07-2009 at 02:31 PM.. Reason: Fix output
# 4  
Old 10-07-2009
good find, danmero - thanks for the fix.
# 5  
Old 10-07-2009
Thx for your answers!
I think i did not express the problem clearly enough.
Now a second attempt:
My attention is to change the attached file content.xml as shown in the picture below:


The tag to be replaced (in the example of my first post "<aaa>") is not at the beginning of the structure. I did not mention it before because using sed this would not be a problem...


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