From: Robert Klemme <bob.news@...>
Date: 2005-12-31T22:32:59+09:00
Subject: Re: Newb: Search & Replace

Wybo Dekker <wybo@servalys.nl> wrote:
> On Sat, 31 Dec 2005, Art Gillespie wrote:
> 
>> #!/usr/bin/env ruby
>> 
>> VERSION_HEX=ARGV[0]
>> 
>> File.open("iDrum_prefix.h.tmp", "w") do |ofile|
>>   File.open("iDrum_prefix.h") do |file|
>>     file.each do |line|
>>       if line =~ /^#define kIDComponentVersion\t*(.*)/
>>         ofile.puts line.sub($1, "#{VERSION_HEX}")
>>       else
>>         ofile.puts line
>>       end
>>     end
>>   end
>> end
>> 
>> File.rename("iDrum_prefix.h.tmp", "iDrum_prefix.h")
> 
> with rio, you can edit a file inplace;
> this changes all x into y in file z:
> 
> #!/usr/bin/ruby
> require 'rubygems'
> require 'rio'
> rio('z') <  rio('z').read.gsub(/x/,'y')

Um, rio is not needed:

Robert@Babelfish2 /c/TEMP
$ echo 'x' > iDrum_prefix.h

Robert@Babelfish2 /c/TEMP
$ cat iDrum_prefix.h
x

Robert@Babelfish2 /c/TEMP
$ ruby -i.tmp -pe "gsub /x/, 'y'" iDrum_prefix.h

Robert@Babelfish2 /c/TEMP
$ cat iDrum_prefix.h
y

:-))

    robert