From: Li Chen <chen_li3@...>
Date: 2007-06-11T22:34:16+09:00
Subject: why gsub! doesn't work in my script

Hi all,

I want to search one pattern  in a file line by line and replace it with
new  pattern one. But it doesn't work. I cannot change the old pattern
into the new one using gsub! Is there any problem with my script?

Thanks,

Li




################Ruby script##############

#create a regular expression  and its replacement

r1_obj=Regexp.escape('1.000000\$P1G\1.000000') #pattern
r2_obj=Regexp.escape('2.000000\$P1G\2.000000') #replacement


DATA.each_line do |line|
          if line.match(r1_obj)
                line.gsub!(r1_obj, r2_obj)     #
                puts line
          end
end




__END__

test1.001
K:\flow\test\test1.001
xxx\1.000000\$P1G\1.000000\xxx
yyyy\1.000000\$P1G\1.000000\xxx
test1.002
K:\flow\test\test1.002
xxx\1.000000\$P1G\1.000000\xxx
yyyy\1.000000\$P1G\1.000000\xxx
test1.003
K:\flow\test\test1.003
xxx\1.000000\$P1G\1.000000\xxx
yyyy\1.000000\$P1G\1.000000\xxx

####screen output###########

xxx\1.000000\$P1G\1.000000\xxx
yyyy\1.000000\$P1G\1.000000\xxx
xxx\1.000000\$P1G\1.000000\xxx
yyyy\1.000000\$P1G\1.000000\xxx
xxx\1.000000\$P1G\1.000000\xxx
yyyy\1.000000\$P1G\1.000000\xxx

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