How to search for regex and replace the characters from string in ruby?

Question

Let's say I have a string:

asd;;%$@#!G'{}[]

Now I want to escape special symbols:

;&|><*?`$(){}[]!#

So, the output will be something like:

asd\;\;%\$@\#\!G\'\{\}\[\]

How can I achieve this using gsub/sub in Ruby?

This is the regex for finding out special characters in a string. /[;\&\|><*\?`'\$(){}[]\!\#]/ — Aashish P
– Aashish P, Commented Apr 20, 2012 at 9:11

Soundar Rathinasamy · Accepted Answer · 2012-04-20 09:37:52Z

1

test_value = "asd;;%$@#!G'{}[]"
SPEC_REGEXP = /((;)|(\&)|(\|)|(>)|(<)|(\*)(\?)|(`)|(\$)|(\()|(\))|({)|(})|(\[)|(\])|(!)|(#))/
test_value.gsub!(SPEC_REGEXP,'\\\\\1')

edited Apr 20, 2012 at 9:37

answered Apr 20, 2012 at 9:32

Soundar Rathinasamy

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sinjed · Accepted Answer · 2012-04-20 09:47:32Z

1

Here's pretty much the same idea as in soundar's solution (but using character classes and no capturing):

"asd;;%$@#!G'{}[]".gsub(/[;&|><*?`$(){}\[\]!#]/, '\\\\\\0')

answered Apr 20, 2012 at 9:47

sinjed

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