Month: November 2009

Brought to you by Mark Sibley.

The following is an example of how you can use the standard C function [strstr] within a LoadRunner script as a means of searching through long strings of text for the occurrence of any matching string. It has two examples that demonstrate how to use the output to do one of two things depending on whatever it is you want it to do.

A sample script can be downloaded here.
STRSTR.zip

Action()
{

// This creates an integer I decided to call [occurrence] and gives it a value of zero
int occurrence = 0;

// This creates a long string of text and then stores it in a parameter I’ve called {sLongString}
// In a real script you wouldn’t need this as you’d be searching through text that you’d captured.
lr_save_string(“peter piper picked a peck of pickled peppers”,”sLongString”);

//**************************************************
// Example 1:
// This is searching for the occurrence of [Poland] anywhere within the parameter {sLongString}
occurrence = strstr(lr_eval_string(“{sLongString}”),”Poland”);
if(occurrence != 0)
{
lr_output_message(“1) The string was found”);
}
else
{
lr_output_message(“1) The string was NOT found”);
}
//**************************************************

//**************************************************
// Example 2:
// This is searching for the occurrence of [peck] anywhere within the parameter {sLongString}
occurrence = strstr(lr_eval_string(“{sLongString}”),”peck”);
if(occurrence != 0)
{
lr_output_message(“2) The string was found”);
}
else
{
lr_output_message(“2) The string was NOT found”);
}
//**************************************************

return 0;
}

This sample script, kindly provided by Mark Sibley shows how to change the case of a captured string.
Mark has written functions which change the case of a string to upper case, lower case or title case.

Either download the script, or paste the functions below into a LoadRunner script “as is” and then call them using the ConvertToUpper, ConvertToLower or ConvertToTitle functions.

For each function, the syntax is as follows.

ConvertToXXXX(“sINPUT”,”sOUTPUT”);
Where XXXX is Upper, Lower or Title
sINPUT is the name of the captured string.
sOUTPUT is the name of the new output string.

ConvertToUpper function
int ConvertToUpper(char * sInput, char * sNew)
{
sInput = (char *)strupr(sInput);
lr_save_string(sInput,sNew);
}

ConvertToLower function
int ConvertToLower(char * sInput, char * sNew)
{
sInput = (char *)strlwr(sInput);
lr_save_string(sInput,sNew);
}

ConvertToTitle function
int ConvertToTitle(char * sInput, char * sNew)
{
int i = 0, s = 0, l = 0;
char buf1[50];
char buf2[2];
char n;

// Copy a single character into the address of [n]
strncpy(&n,sInput+i,1);

// Copy the single character into buf2
sprintf(buf2,”%c”,n);

// Convert the contents of buf2 to uppercase
strupr(buf2);

// Overwrite the contents of buf1 with buf2
strcpy(buf1,buf2);

i++;
while(i < strlen(sInput))
{
// Overwrite buf2 with one character
strncpy(&n,sInput+i,1);
sprintf(buf2,”%c”,n);

// If the previous character was a space then make the current character upper case
if(s == 1){
strupr(buf2);
strcat(buf1,buf2);
s = 0;
}
// Otherwise convert to lower case and concatenate the current character into the string buf1
else{
strlwr(buf2);
strcat(buf1,buf2);
}

// If the current character is a space set the value of [s] to [1] so that the next character gets capitalised
if(strcmp(” “,buf2)==0)
{
s = 1;
}
i++;
}
lr_save_string(buf1,sNew);
}

 

More sample scripts are avaiable at my GitHub library – https://github.com/richardbishop/LoadRunnerSamples