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Removing Multiple Line comments

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# 1  
Old 02-18-2011
Removing Multiple Line comments
Smilie Hi all,

I would like to remove all multiple line comments, in between the pattern /*.....*/ from my file.

The comments can be expected to be at any place in my file, like this:
Code:
/*....
This multi line comment might stretch even the entire file..!
......*/
Some text
Text1 /* Comment here */
/*...Comment...*/ Text2
Some text
Note this text /*.....
....
......*/ Note here again


I would like my output to be like this:
Code:
Some text
Text1
Text2
Some text
Note this text
Note here again


I tried expressions like

Code:
sed -e 's~/\*[^$]*\*/~~' -e '/\/\*/,/\*\//d'
sed 's/\/\*[^*]*\*\///g'

and many such variations of sed.

I did try searching the forums here but one issue still remains...

This part of the file
Code:
Note this text /*.....
....
......*/ Note here again

is getting deleted completely along with the proper text Note this text and Note here again.

Please help me out on this... Smilie
Last edited by Franklin52; 02-18-2011 at 04:16 AM.. Reason: Please use code tags, thank you
# 2  
Old 02-18-2011
This may be a start:
Code:
sed 's|/\*|\n&|g;s|*/|&\n|g' infile | sed '/\/\*/,/*\//d'

This User Gave Thanks to Scrutinizer For This Post:
Jackuar
# 3  
Old 02-18-2011
Try:
Code:
perl -p0e 's!/\*.*?\*/!!sg' file

This User Gave Thanks to bartus11 For This Post:
Jackuar
# 4  
Old 02-18-2011
Thank you Scrutinizer...

The main issue of this part...

Code here; /*..... comment starts
Code here; comment ends */

This comment section is not removed...

I get it as

Code here;
Code here; comment ends *


Pls help on this


---------- Post updated at 01:37 PM ---------- Previous update was at 01:25 PM ----------

Thanks Bartus... but still the issue remains as replied to Scrutinizer... Smilie
Last edited by Jackuar; 02-18-2011 at 04:04 AM..
# 5  
Old 02-18-2011
Try:
Code:
sed 's|/\*|\n&|g;s|*/|&\n|g' infile | sed -n '/\/\*/,/*\//{H;$!d;};p;$g;$woutfile'

The comments should be in "outfile"
# 6  
Old 02-18-2011
@Scrutinizer..

I get a blank file as output... !! As if everything is deleted...!
# 7  
Old 02-18-2011
What OS are you using?
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