How to find a text, copy it and insert in next line in a file?
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2
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I'm trying to write a script that processes .xml file. It has to find all lines with a <title> element, copy it, and paste in a next line after that found one, but also changing the element type. Here is an example.
Original:
some text
<title>text 1</title>
some text<title>text 2</title>
some text
And this is what I need to get:
some text
<title>text 1</title><description>text 1</description>
some text<title>text 2</title><description>text 2</description>
some text
Can it be done with sed or grep (or some other tool)?
text-processing sed grep scripting xml
asked Jul 11 '17 at 21:57
xjr
134
add a comment |
up vote
2
down vote
favorite
I'm trying to write a script that processes .xml file. It has to find all lines with a <title> element, copy it, and paste in a next line after that found one, but also changing the element type. Here is an example.
Original:
some text
<title>text 1</title>
some text<title>text 2</title>
some text
And this is what I need to get:
some text
<title>text 1</title><description>text 1</description>
some text<title>text 2</title><description>text 2</description>
some text
Can it be done with sed or grep (or some other tool)?
text-processing sed grep scripting xml
asked Jul 11 '17 at 21:57
xjr
134
why the second<title>line hastext 1in the result? a typo?
– RomanPerekhrest
Jul 11 '17 at 22:02
yes, it was a typo, i've corrected it
– xjr
Jul 20 '17 at 21:41
add a comment |
up vote
2
down vote
favorite
up vote
2
down vote
favorite
I'm trying to write a script that processes .xml file. It has to find all lines with a <title> element, copy it, and paste in a next line after that found one, but also changing the element type. Here is an example.
Original:
some text
<title>text 1</title>
some text<title>text 2</title>
some text
And this is what I need to get:
some text
<title>text 1</title><description>text 1</description>
some text<title>text 2</title><description>text 2</description>
some text
Can it be done with sed or grep (or some other tool)?
text-processing sed grep scripting xml
asked Jul 11 '17 at 21:57
xjr
134
I'm trying to write a script that processes .xml file. It has to find all lines with a <title> element, copy it, and paste in a next line after that found one, but also changing the element type. Here is an example.
Original:
some text
<title>text 1</title>
some text<title>text 2</title>
some text
And this is what I need to get:
some text
<title>text 1</title><description>text 1</description>
some text<title>text 2</title><description>text 2</description>
some text
Can it be done with sed or grep (or some other tool)?
text-processing sed grep scripting xml
text-processing sed grep scripting xml
asked Jul 11 '17 at 21:57
xjr
134
asked Jul 11 '17 at 21:57
xjr
134
edited Jul 20 '17 at 21:41
asked Jul 11 '17 at 21:57
xjr
134
asked Jul 11 '17 at 21:57
xjr
134
asked Jul 11 '17 at 21:57
xjr
134
134
why the second<title>line hastext 1in the result? a typo?
– RomanPerekhrest
Jul 11 '17 at 22:02
yes, it was a typo, i've corrected it
– xjr
Jul 20 '17 at 21:41
add a comment |
why the second<title>line hastext 1in the result? a typo?
– RomanPerekhrest
Jul 11 '17 at 22:02
yes, it was a typo, i've corrected it
– xjr
Jul 20 '17 at 21:41
why the second
<title> line has text 1 in the result? a typo?– RomanPerekhrest
Jul 11 '17 at 22:02
why the second
<title> line has text 1 in the result? a typo?– RomanPerekhrest
Jul 11 '17 at 22:02
yes, it was a typo, i've corrected it
– xjr
Jul 20 '17 at 21:41
yes, it was a typo, i've corrected it
– xjr
Jul 20 '17 at 21:41
add a comment |
2 Answers
2
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oldest
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up vote
1
down vote
accepted
sed -E 's%<title>(.*)</title>%<title>1</title>n<desc>1</desc>%g' file.xml should do your homework.
To explain it a bit further:
-E parameter tells sed to use extended regular expressions, so you can use references. Replacing with sed is normally done in the form s/search/replace/g. As there are slashes in the search text we use % instead of / for sed to mark the parts, so we do not have to mask the slashes in the search text by a backslash. The rest is normal regex stuff, 1 in the replace part references the snippet inside (…) in the search part.
answered Jul 12 '17 at 21:41
Jaleks
1,203422
This answer needs explanation.
– countermode
Jul 12 '17 at 22:09
Thank you, it works. I have not analyzed it yet, but it works!
– xjr
Jul 20 '17 at 21:55
add a comment |
up vote
3
down vote
XML parsers/processors are the right tools for manipulating XML data.
xmlstarlet solution:
the exemplary input.xml content:
<root>
some text
<title>text 1</title>
some text
<title>text 2</title>
some text </root>
xmlstarlet ed -a '//title' -t elem -n 'description' -v '' input.xml
| xmlstarlet ed -u '//description' -x './preceding-sibling::title[1]/text()'
The output:
<?xml version="1.0"?>
<root>
some text
<title>text 1</title><description>text 1</description>
some text
<title>text 2</title><description>text 2</description>
some text </root>
ed- edit mode-a- append action-u- update action
answered Jul 11 '17 at 22:20
RomanPerekhrest
22.8k12246
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
accepted
sed -E 's%<title>(.*)</title>%<title>1</title>n<desc>1</desc>%g' file.xml should do your homework.
To explain it a bit further:
-E parameter tells sed to use extended regular expressions, so you can use references. Replacing with sed is normally done in the form s/search/replace/g. As there are slashes in the search text we use % instead of / for sed to mark the parts, so we do not have to mask the slashes in the search text by a backslash. The rest is normal regex stuff, 1 in the replace part references the snippet inside (…) in the search part.
answered Jul 12 '17 at 21:41
Jaleks
1,203422
This answer needs explanation.
– countermode
Jul 12 '17 at 22:09
Thank you, it works. I have not analyzed it yet, but it works!
– xjr
Jul 20 '17 at 21:55
add a comment |
up vote
1
down vote
accepted
sed -E 's%<title>(.*)</title>%<title>1</title>n<desc>1</desc>%g' file.xml should do your homework.
To explain it a bit further:
-E parameter tells sed to use extended regular expressions, so you can use references. Replacing with sed is normally done in the form s/search/replace/g. As there are slashes in the search text we use % instead of / for sed to mark the parts, so we do not have to mask the slashes in the search text by a backslash. The rest is normal regex stuff, 1 in the replace part references the snippet inside (…) in the search part.
answered Jul 12 '17 at 21:41
Jaleks
1,203422
This answer needs explanation.
– countermode
Jul 12 '17 at 22:09
Thank you, it works. I have not analyzed it yet, but it works!
– xjr
Jul 20 '17 at 21:55
add a comment |
up vote
1
down vote
accepted
up vote
1
down vote
accepted
sed -E 's%<title>(.*)</title>%<title>1</title>n<desc>1</desc>%g' file.xml should do your homework.
To explain it a bit further:
-E parameter tells sed to use extended regular expressions, so you can use references. Replacing with sed is normally done in the form s/search/replace/g. As there are slashes in the search text we use % instead of / for sed to mark the parts, so we do not have to mask the slashes in the search text by a backslash. The rest is normal regex stuff, 1 in the replace part references the snippet inside (…) in the search part.
answered Jul 12 '17 at 21:41
Jaleks
1,203422
sed -E 's%<title>(.*)</title>%<title>1</title>n<desc>1</desc>%g' file.xml should do your homework.
To explain it a bit further:
-E parameter tells sed to use extended regular expressions, so you can use references. Replacing with sed is normally done in the form s/search/replace/g. As there are slashes in the search text we use % instead of / for sed to mark the parts, so we do not have to mask the slashes in the search text by a backslash. The rest is normal regex stuff, 1 in the replace part references the snippet inside (…) in the search part.
answered Jul 12 '17 at 21:41
Jaleks
1,203422
edited Dec 3 at 20:20
answered Jul 12 '17 at 21:41
Jaleks
1,203422
answered Jul 12 '17 at 21:41
Jaleks
1,203422
answered Jul 12 '17 at 21:41
Jaleks
1,203422
1,203422
This answer needs explanation.
– countermode
Jul 12 '17 at 22:09
Thank you, it works. I have not analyzed it yet, but it works!
– xjr
Jul 20 '17 at 21:55
add a comment |
This answer needs explanation.
– countermode
Jul 12 '17 at 22:09
Thank you, it works. I have not analyzed it yet, but it works!
– xjr
Jul 20 '17 at 21:55
This answer needs explanation.
– countermode
Jul 12 '17 at 22:09
This answer needs explanation.
– countermode
Jul 12 '17 at 22:09
Thank you, it works. I have not analyzed it yet, but it works!
– xjr
Jul 20 '17 at 21:55
Thank you, it works. I have not analyzed it yet, but it works!
– xjr
Jul 20 '17 at 21:55
add a comment |
up vote
3
down vote
XML parsers/processors are the right tools for manipulating XML data.
xmlstarlet solution:
the exemplary input.xml content:
<root>
some text
<title>text 1</title>
some text
<title>text 2</title>
some text </root>
xmlstarlet ed -a '//title' -t elem -n 'description' -v '' input.xml
| xmlstarlet ed -u '//description' -x './preceding-sibling::title[1]/text()'
The output:
<?xml version="1.0"?>
<root>
some text
<title>text 1</title><description>text 1</description>
some text
<title>text 2</title><description>text 2</description>
some text </root>
ed- edit mode-a- append action-u- update action
answered Jul 11 '17 at 22:20
RomanPerekhrest
22.8k12246
add a comment |
up vote
3
down vote
XML parsers/processors are the right tools for manipulating XML data.
xmlstarlet solution:
the exemplary input.xml content:
<root>
some text
<title>text 1</title>
some text
<title>text 2</title>
some text </root>
xmlstarlet ed -a '//title' -t elem -n 'description' -v '' input.xml
| xmlstarlet ed -u '//description' -x './preceding-sibling::title[1]/text()'
The output:
<?xml version="1.0"?>
<root>
some text
<title>text 1</title><description>text 1</description>
some text
<title>text 2</title><description>text 2</description>
some text </root>
ed- edit mode-a- append action-u- update action
answered Jul 11 '17 at 22:20
RomanPerekhrest
22.8k12246
add a comment |
up vote
3
down vote
up vote
3
down vote
XML parsers/processors are the right tools for manipulating XML data.
xmlstarlet solution:
the exemplary input.xml content:
<root>
some text
<title>text 1</title>
some text
<title>text 2</title>
some text </root>
xmlstarlet ed -a '//title' -t elem -n 'description' -v '' input.xml
| xmlstarlet ed -u '//description' -x './preceding-sibling::title[1]/text()'
The output:
<?xml version="1.0"?>
<root>
some text
<title>text 1</title><description>text 1</description>
some text
<title>text 2</title><description>text 2</description>
some text </root>
ed- edit mode-a- append action-u- update action
answered Jul 11 '17 at 22:20
RomanPerekhrest
22.8k12246
XML parsers/processors are the right tools for manipulating XML data.
xmlstarlet solution:
the exemplary input.xml content:
<root>
some text
<title>text 1</title>
some text
<title>text 2</title>
some text </root>
xmlstarlet ed -a '//title' -t elem -n 'description' -v '' input.xml
| xmlstarlet ed -u '//description' -x './preceding-sibling::title[1]/text()'
The output:
<?xml version="1.0"?>
<root>
some text
<title>text 1</title><description>text 1</description>
some text
<title>text 2</title><description>text 2</description>
some text </root>
ed- edit mode-a- append action-u- update action
answered Jul 11 '17 at 22:20
RomanPerekhrest
22.8k12246
answered Jul 11 '17 at 22:20
RomanPerekhrest
22.8k12246
answered Jul 11 '17 at 22:20
RomanPerekhrest
22.8k12246
answered Jul 11 '17 at 22:20
RomanPerekhrest
22.8k12246
22.8k12246
add a comment |
add a comment |
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why the second
<title>line hastext 1in the result? a typo?– RomanPerekhrest
Jul 11 '17 at 22:02
yes, it was a typo, i've corrected it
– xjr
Jul 20 '17 at 21:41