On Thu, Aug 9, 2012 at 1:53 PM, ajay paswan <[email protected]> wrote:
> Could not understand any line..
> can we do in conventional way?
> like open a file to read and then open a file to write and then write
> logically, then delete source and rename the new file.
Like so?
14:50:41 ~$ ruby19 rrr.rb t1.txt
14:50:45 ~$ diff -U5 t1.txt.bak t1.txt
--- t1.txt.bak 2012-08-09 12:47:35.043920600 +0200
+++ t1.txt 2012-08-09 14:50:45.712765600 +0200
@@ -1,11 +1,11 @@
111111111
-a
+
b
-ab
-ba
-bab
+b
+b
+bb
"a"
"b"
"ab"
"ba"
"bab"
14:50:47 ~$ cat -n rrr.rb
1 ARGV.each do |f|
2 bak = f + ".bak"
3 File.rename f, bak
4 File.open f, 'w' do |out|
5 File.foreach bak do |line|
6 out.puts line.split(/("[^"]*")/).each {|s| /\A"/ =~ s or
s.gsub!(/a/, '')}.join
7 end
8 end
9 end
Cheers
robert
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
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