--On Thursday, May 28, 2009 07:48:36 -0500 Manish Jain
<invalid.poin...@gmail.com> wrote:
Hi,
I need sed to do something which sounds simple, but I can't figure out
the right command. All I need to do is insert a blank after a '}' at the
end of a line if the next line begins immediately afterwards (i.e. with
no blank line between).
//abc.cpp :
int myclass::fx(int * arg)
{
if(! (isValid()))
{
return -1;
}
return ptr->fx(arg);
}
//what-i-want.cpp :
int myclass::fx(int * arg)
{
if(! (isValid()))
{
return -1;
}
return ptr->fx(arg);
}
The commands I have tried are :
i)
sed -e 's/\(}$\)\n\(^[[:space:]]*[[:alpha:]]\+\)/\1\n\n\2/' \
<abc.cpp >what-i-want.cpp
ii)
sed -e 's/\(}$\)\(^[[:space:]]*[[:alpha:]]\+\)/\1\n\2/' \
<abc.cpp >what-i-want.cpp
but obviously neither works, which is why posting this message.
Can anybody please tell me what the correct command would be like ?
Seems like this would work to add a space only to lines where the next line
only has a new line :
sed ' /\}$/ { N /}$\n\n/ { s/\}$\n/\} $\n/} } ' file
If the possibility exists that the new line might have spaces as well, you
could do this:
sed ' /\}$/ { N /}$\n\n/ { s/\}$\n[ ]?/\} $\n/} } '
Note: I haven't tested this, so it may require some modification. Read this
page on dealing with multiple lines in sed to gain further understanding -
http://www.grymoire.com/Unix/Sed.html
--
Paul Schmehl, Senior Infosec Analyst
As if it wasn't already obvious, my opinions
are my own and not those of my employer.
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