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Swapping three lines

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# 1  
Old 09-20-2010
Swapping three lines
I have some text:
Code:
  <date>some_date</date>
  <text>some_text</text>
    <name>some_name<name>

and I want to transform it to smthng like that:
Code:
some_name on some_date: some_text

I've tried sed:
Code:
sed 's/<text>\(.*\)<\/text>
<name>\(.*\)<\/name>/\2 - \1/'

but it says unterminated substitute pattern, and I can't understand why... Smilie


so, I would be very grateful if someone could point me to the right direction Smilie.

thank you.
# 2  
Old 09-20-2010
Code:
perl -ln0e '/<date>(.+?)<\/date>.*?<text>(.+?)<\/text>.*?<name>(.+?)<\/name>/s;print "$3 on $1: $2"' file

This User Gave Thanks to bartus11 For This Post:
dsjkvf
# 3  
Old 09-20-2010
thanks! but now it only changes the first array of data, operates with the first three lines (and I have a lot of all those <date></date><text></text><name></name>).

so, I wonder, how to make it to operate with the whole input, is there some kind of global switch?
# 4  
Old 09-20-2010
Code:
perl -ln0e 'while(/<date>(.+?)<\/date>.*?<text>(.+?)<\/text>.*?<name>(.+?)<\/name>/sg){print "$3 on $1: $2"}' file

# 5  
Old 09-20-2010
great, thank you!

now I've just should figure for myself what all those mysterious perl switches do Smilie.
# 6  
Old 09-20-2010
Quote:
Originally Posted by dsjkvf

but it says unterminated substitute pattern, and I can't understand why... Smilie

so, I would be very grateful if someone could point me to the right direction Smilie.
.
This is because you spread the command over two lines and you cannot do that like this.. Also, this command would not work since sed is line based, you would have to join the next lines with the N command, e.g.:
Code:
sed '/<date>/{N;N;s|.*<date>\(.*\)</date>.*<text>\(.*\)</text>.*<name>\(.*\)</name>.*|\3 on \1: \2|}' infile

output:
Code:
some_name on some_date: some_text

This User Gave Thanks to Scrutinizer For This Post:
dsjkvf
# 7  
Old 09-20-2010
Quote:
Originally Posted by Scrutinizer
This is because you spread the command over two lines and you cannot do that like this.
but I can split the substitute pattern over two lines with sed. e.g.:
Code:
sed 's/\([0-9A-Za-z]\),\([0-9A-Za-z]\)/\1 \
\2/g'

so, I probably cannot split search pattern, that's why I saw that error?
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