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Full Discussion: sed help - nested pattern
Top Forums Shell Programming and Scripting sed help - nested pattern Post 302550438 by planetary12 on Thursday 25th of August 2011 09:39:52 PM
Old 08-25-2011
sed help - nested pattern
Hello,

I am very new to Unix and using sed so I'm struggling a little bit with this command and was hoping someone could help me out.

I want to find a nested pattern in a file and replace some text in that file with text from another file.

For example, in file one I have something like this:
Code:
def bikeModels(myBike = getBike())
if myBike == "Huffy":
return ["H1","H2","H3"]
elif myBike == "Mongoose":
return ["M1","M2","M3"]
***Blank line separates these two sections***

def bikeColors(myBike = getBike())
if myBike == "Huffy":
return ["Black","Blue"]
elif myBike == "Mongoose":
return ["Red","White"]

In my file two all I have is a new set of Huffy models:
Code:
return ["H4","H5","H6"]

which I want to put into file one, replacing what was originally being returned if myBike == "Huffy" under bikeModels to get a file that looks like this:

Code:
def bikeModels(myBike = getBike())
if myBike == "Huffy":
return ["H4","H5","H6"]
elif myBike == "Mongoose":
return ["M1","M2","M3"]
def bikeColors(myBike = getBike())
if myBike == "Huffy":
return ["Black","Blue"]
elif myBike == "Mongoose":
return ["Red","White"]

I can use sed to find the chunk of the file I want with a command like:
sed -n '/bikeModels/,/^$/ {myBike == "Huffy"/,/]/p}; file1

but I have no idea how to replace that text with the text from file two.

I did see I could use:
sed -e '/regex/{r insert.file' -e 'd;}' source
but, again, I have no idea how to combine everything I want to do and have it work.

Thanks to anyone that can help. Let me know if I need to go into more detail or explain anything better.
 

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LEARN ABOUT OSX

dump

dump(n) 																   dump(n)

__________________________________________________________________________________________________________________________________________________

NAME

       dump - Dump information about Tcl interpreter in TkCon

SYNOPSIS

       dump method ?-nocomplain? ?-filter pattern? ?--? pattern ?pattern ...?

_________________________________________________________________

DESCRIPTION

       The  dump  command  provides  a way for the user to spit out state information about the interpreter in a Tcl readable (and human readable)
       form.  It takes the general form:

       dump method ?-nocomplain? ?-filter pattern? ?--? pattern ?pattern ...?

       The patterns represent glob-style patterns (as in string match pattern $str).  -nocomplain will prevent dump from throwing an error  if	no
       items matched the pattern.  -filter is interpreted as appropriate for the method.  The various methods are:

       dump command args
	      Outputs one or more commands.

       dump procedure args
	      Outputs one or more procs in sourceable form.

       dump variable args
	      Outputs  the values of variables in sourceable form.  Recognizes nested arrays.  The -filter pattern is used as to filter array ele-
	      ment names and is interepreted as a glob pattern (defaults to {*}).  It is passed down for nested arrays.

       dump widget args
	      Outputs one or more widgets by giving their configuration options.  The -filter pattern is used as to filter the config options  and
	      is interpreted as a case insensitive regexp pattern (defaults to {.*}).

SEE ALSO

       idebug(n), observe(n), tkcon(1), tkcon(n), tkconrc(5)

KEYWORDS

       Tk, console, dump

COPYRIGHT

       Copyright (c) Jeffrey Hobbs <jeff at hobbs.org>

TkCon									2.5								   dump(n)
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