Getting issue with ngx.regsub to handle magic characters of lua(Ex. $)

91prashantgaur · 2014-08-21T15:30:40+00:00

Hello! On Mon, Aug 25, 2014 at 11:13 PM, pete wilde wrote: > I am having issues with the following code > local line, err, partial = sock:receiveunti...

Getting issue with ngx.regsub to handle magic characters of lua(Ex. $)

91prashantgaur

Hello All,

I want to replace a word into my body content from other string .
To implement this i am using ngx.re.sgub but i am getting a weird issue. I think ngx.re.gsub is not handling magic characters.

- Example :

        content1 = "HiTestHello Test how are you Testall "
        _ssi = "Test"
        body = "$100.00"
        content2 = ngx.re.gsub(content1, _ssi, body)
        ngx.print(content2)

output is

    Hi.00lHelo .00 how are you .00all he.00llo .00 how are you .00all

while output should like :

    Hi$100.00Hello .00 how are you .00all.

Please let me know how can i achieve this .

agentzh

Hello!

On Thu, Aug 21, 2014 at 12:30 AM, Prashant Gaur wrote:
>  - Example :
>
>         content1 = "HiTestHello Test how are you Testall "
>         _ssi = "Test"
>         body = "$100.00"
>         content2 = ngx.re.gsub(content1, _ssi, body)
>         ngx.print(content2)
>

https://github.com/openresty/lua-nginx-module#ngxresub

"Literal dollar sign characters ($) in the replace string argument can
be escaped by another dollar sign, for instance,

local newstr, n, err = ngx.re.sub("hello, 1234", "[0-9]", "$$")
    -- newstr == "hello, $234"
    -- n == 1

Do not use backlashes to escape dollar signs; it will not work as expected."

Regards,
-agentzh

91prashantgaur

Thanks

On Thursday, 21 August 2014 13:00:39 UTC+5:30, Prashant Gaur wrote:

Hello All,

I want to replace a word into my body content from other string .
To implement this i am using ngx.re.sgub but i am getting a weird issue. I think ngx.re.gsub is not handling magic characters.

- Example :

        content1 = "HiTestHello Test how are you Testall "
        _ssi = "Test"
        body = "$100.00"
        content2 = ngx.re.gsub(content1, _ssi, body)
        ngx.print(content2)

output is

    Hi.00lHelo .00 how are you .00all he.00llo .00 how are you .00all

while output should like :

    Hi$100.00Hello .00 how are you .00all.

Please let me know how can i achieve this .