Home Performance Test LoadRunner VuGen: Find Sub string from correlation value with function lr_save_searched_string

LoadRunner VuGen: Find Sub string from correlation value with function lr_save_searched_string

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lr_save_searched_string

Searches for an occurrence of a string in a buffer and saves a portion of the buffer after that string to a parameter.

C Language

int lr_save_searched_string( const char *buffer, long buf_size, unsigned int occurrence, const char *search_string, int offset, unsigned int string_len, const char *parm_name );

Example: lr_save_searched_string String and Parameter Functions

Arguments

Name Comments
buffer The STRING or CARRAY buffer, part of whose contents you want to save.
buf_size The buffer size.
occurrence The occurrence number of the search_string (0-based count). For example, if the search_string occurs three times, and you want the second occurrence, set occurrence to 1.
search_string The string to search for in the buffer.
offset The number of characters to skip after the end of the search string occurrence.
string_len The number of characters to save.
parm_name Parameter name to be used in subsequent lr statements to refer to the saved information. Name is enclosed in double-quotes.

The lr_save_searched_string function searches for string search_string inside string or character array buffer, and finds the nth occurrence of search_string, where n is occurrence plus 1. The sub-string to be saved starts at offset after the end of the nth occurrence of search_string, and has length string_len.

For example:

        char cBuff[] = "abc Emma Woodhouse abc Elizabeth Bennet abc William Price";
        lr_save_searched_string(cBuff, strlen(cBuff),
        2, "abc",// Search for third occurrence of "abc"
        1,       // Skip the space after "abc"
        4,       // Put the next four characters...
       "Fannys_brother"); // ... in parameter Fannys_brother.

After the call, the content of parameter Fannys_brother is “Will”.

The search_string cannot contain null characters, but the buffer can contain null characters.

Use the lr_save_string function to save strings from character arrays. Use lr_save_searched_string only when you need to save a portion of a character array relative to a string occurrence.

Return Values

This function returns LR_PASS on success, and a negative value on failure.

Parameterization

You cannot use standard parameterization for any arguments in this function.

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