Easy way to automate testing

Good stuff Dmitry, this is very useful. Icing on the cake would be to have some search & replace functionality as well, but happy with where it's at for the time being...

This will be particularly useful in matching/correlating binary info for Flex/AMF load testing ...

Your site is very resourceful. Thank you.

hi Dmitry u r providing an good stuff.its is excellent.i have a query that is not related regular expressions.my question is how can i collect the data 4m xml file & send that data to loadrunner parameter.can u pls help me regarding this.

2Sumathi:
You can use lr_xml_extract, lr_xml_find, lr_xml_get_values etc functions to work with XML in LoadRunner.

Hello Dmitry, lr_xml_extract, lr_xml_find, lr_xml_get_values etc functions are available only on SOA protocol. I am looking for a way to have these functions working in AJAX or other protocols. Thanks, 'eijuito from gmail.com

any chance you could post this code snippet (currently it is a gif)
Action5()
{
regmatch_t arr[20];
char month[50];
char *subject1 = "abc 1st of May 2008xyz";
char *subject2 = "abc 25th of February 2031";
char *pattern = "\\d.+([A-Z]\\w+)\\s+\\d{4}";

matchex (subject1, pattern, 20, arr);
strncpy (month,subject1 + arr[1].rm_so, arr[1].rm_eo - arr[1].rm_so);
lr_output_message("Month1 is: %s", month);

return 0;
}

I get a
vuser_init.c(44): Error: C interpreter run time error: vuser_init.c (44): Error -- memory violation : Exception ACCESS_VIOLATION received.

I noticed that matchex()
uses:
pcre_free(&re);
and
match() uses:
regfree(&re);

I changed matchex to use:
regfree(&re);

and that seemed to eliminate the error... I am missing something?

hi,
can u explain in
the first example
rc = regexec(&re, subject,0, NULL, 0);
if u replace 0 with any value showing an error
and in second example
rc = regexec(&re, subject, 20, pmatch, 0);
its taking 20 as its value
and not showing an error

2Celso,
You can use xml_* functions in web protocols (HTTP/HTML, Click & Script).
I do not see any problems in using xml_* functions in web protocols.
What troubles did you face?

2wasque,
I've rechecked the source code - it's correct.
So, it's difficult to say why you got an exception. If I were on your place, I would start debugging to find the reason.

2m.a,
Third parameter of regexec function is a number of items in an output array.
The foorth parameter is an address of this array.

So, when change
rc = regexec(&re, subject,0, NULL, 0);
to
rc = regexec(&re, subject,20, NULL, 0);

you specify that an output array contains 20 items, but his address is still == NULL.

That's why the error occurs.

Hi Dmitry,
Thank for your efforts on this. Any I realized that you answered this question, but I'm also receiving an error at the pcre_free(&re) line. Here's the complete error: vuser_init.c(18): Error: C interpreter run time error: vuser_init.c (18): Error -- memory violation : Exception ACCESS_VIOLATION received.
vuser_init.c(18): Notify: CCI trace: vuser_init.c(18): unknown_fun(0x011f0314 "ÏÓ")
.
vuser_init.c(18): Notify: CCI trace: Action.c(10): matchex(0x00cc02b8 "abc 1st of May 2008xyz", 0x00cc0287 "\d.+([A-Z]\w+)\s+\d{4}", 20, 0x011f0020)
.
vuser_init.c(18): Notify: CCI trace: Compiled_code(0): Action()
.

What is interesting is that LoadRunner is saying that the function is unknown.

Any ideas on what the problem may be?
Thank you

Did you change something in my script?

lowkhe,
Did you change something in my script?

Nothing was changed. I did a copy/paste - thanks again:

//////////////////////////////////////////////////////////////////////////
/// 'matchex' (EXtended) function matches a 'pattern' against a given 'subject'
/// It returns number of matches:
/// 0 - for a non-match or error
/// 1 and more - for successful matches
int matchex(const char *subject, const char *pattern, int nmatch, regmatch_t *pmatch)
{
int rc; // Returned code

regex_t re; // Compiled regexp pattern

lr_load_dll("c:\\pcre\\bin\\pcre3.dll");

if (regcomp(&re, pattern, 0) != 0)
return 0; // Report error

rc = regexec(&re, subject, nmatch, pmatch, 0);
pcre_free(&re); // Release memory used for the compiled pattern

if (rc < 0)
return 0; // Report error

// Get total number of matched patterns and subpatterns
for (rc = 0; rc < nmatch; rc++)
if (pmatch[rc].rm_so == -1)
break;

return rc;
}
vuser_init()
{
return 0;
}

Since you didn't sent code from Action(), I think that it is blank.
Am I right?
If not, then why didn't you provide all required info?

I thought you needed the matchex function as this had the most omplexity. Here's the Action():
Action()
{

regmatch_t arr[20];
char month[50];
char *subject1 = "abc 1st of May 2008xyz";
char *subject2 = "abc 25th of February 2031";
char *pattern = "\\d.+([A-Z]\\w+)\\s+\\d{4}";

matchex (subject1, pattern, 20, arr);
strncpy (month,subject1 + arr[1].rm_so, arr[1].rm_eo - arr[1].rm_so);
lr_output_message("Month1 is: %s", month);

return 0;
}

Lowkhe,
I've rechecked the code. It works correctly on my computer.
Could you send your LR script to my email?

ok - thanks.

userSession value=98117.6678817335fAtzQcHpftVzzzzHDAciVpfzfcf>

In the above HTML code, I need to capture the value for usersession..

Now tel me what shud my regular expression shud b...??

Game Freak (September 8),
For example:
=(.*)

Hi,
I am getting the following error in matchex. If I comment out the line

pcre_free(&re); // Release memory used for the compiled pattern

than it works fine , I would think this may cause a memory leak?

Any ideas.

Virtual User Script started
Starting action vuser_init.
Web Turbo Replay of LoadRunner 8.1.0 for WINXP; WebReplay81 build 5495 [MsgId: MMSG-27143]
Run-Time Settings file: "C:\projects\qpg\scripts\8.1.1\Copy of COMB_VPTF_811_updated_v3\\default.cfg" [MsgId: MMSG-27141]
vuser_init.c(129): Error: C interpreter run time error: vuser_init.c (129): Error -- memory violation : Exception ACCESS_VIOLATION received.
vuser_init.c(129): Notify: CCI trace: vuser_init.c(129): unknown_fun(0x02bb0184 "œ~ò")
.
vuser_init.c(129): Notify: CCI trace: vuser_init.c(53): matchex(0x029209f0 "abc 1st of May 2008xyz", 0x029209bf "\d.+([A-Z]\w+)\s+\d{4}", 20, 0x02bb0020)
.
vuser_init.c(129): Notify: CCI trace: Compiled_code(0): vuser_init()
.
Action was aborted.

to Mohhamed (September 24),
Do not comment the line :)

Dmitry,

Can't seem to succesfully pas the value from a web_reg_save_param to matchex as it expects a constant character type.

Excellent post! I followed all the steps you indicated but I'm getting the following errors. Any ideas? I did copy all appropriate code to Vuser_init and Action file. Any help will be appreciated.

In file included from globals.h:9,
from c:\program files\mercury\loadrunner\scripts\regex1\\combined_RegEx1.c:2:
C:\QTP\pcre\include\pcre.h:88: stdlib.h: No such file or directory
In file included from globals.h:9,
from c:\program files\mercury\loadrunner\scripts\regex1\\combined_RegEx1.c:2:
C:\\pcre\\include\\pcre.h:88: stdlib.h: No such file or directory
In file included from globals.h:10,
from c:\program files\mercury\loadrunner\scripts\regex1\\combined_RegEx1.c:2:
C:\\pcre\\\include\\pcreposix.h:45: stdlib.h: No such file or directory