[ragel-users] How to check if a list of strings exist?

[Adrian Thurston]

Hi Dinesh,

The basic approach would be to write a parser for headers and union the 
pattern for header names with specific header name values. Have a look 
at mailbox1.rl in the test case directory. It is close to what you want.

Regards,
  Adrian



On 14-05-19 03:36 PM, dinesh rtp wrote:
> Hi,
>
> I am new to ragel and finding it difficult to solve this problem.
>
> I need to check if certain headers exists in the input to ragel machine.
> The easier way is to parse header and check if the header I am looking
> for is present or not. The problem with this, I need to compare every
> header that is present in the input to figure if the headers I  am
> looking for is present. Is there a way in ragel to say "Given a list of
> headers are these headers present in any order" ?
>
> For example:
>
> Input:
>
> |Content-Description: Delivery report
> Content-Type: message/delivery-status
>
> Reporting-MTA: dns; xxx
> Arrival-Date: Fri, 04 May 2012 15:25:09 +0200
>
> Final-Recipient: rfc822; test-dsn-failure at gmail.com
> Status: 5.1.1
> Action: failed
> Last-Attempt-Date: Fri, 04 May 2012 15:25:09 +0200
> Diagnostic-Code: smtp; 550-5.1.1 The email account that you tried to reach does not exist. Please try
> 550-5.1.1 double-checking the recipient's email addressfor  typosor
> 550-5.1.1  unnecessary spaces.  Learn  more at
> 550  5.1.1  http://support.google.com/mail/bin/answer.py?answer=6596  t12si10077186weq.36
> |
>
> |I just need to check if the headers:|
> |Reporting-MTA:|
> |Final-Recipient:|
> Status:
> Action:
>
> are present.
>
> For now I have come with the following:
>
> key = print - [:];
> action headerName {headerName.append(1,fc);}
> action onHeader {
>      if (headerName.compare("Reporting-MTA") == 0) {
>          cout << "Reporting-MTA header is present" << endl;
>      } else if ...
> }
> header = key+ @headerName ':' @onHeader;
>
> Is there a easier way to check if these headers exist?
>
>
>
>
> _______________________________________________
> ragel-users mailing list
> ragel-users at complang.org
> http://www.complang.org/mailman/listinfo/ragel-users
>

_______________________________________________
ragel-users mailing list
ragel-users at complang.org
http://www.complang.org/mailman/listinfo/ragel-users