Count substring

Purpose: Count substrings.

 count-substring <substring> in <string> to <count> [ case-insensitive [ <case insensitive> ] ]

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count-substring counts the number of occurrences of <substring> in <string> and stores the result in <count> (specified in "to" clause). By default, search is case-sensitive. If you use "case-insensitive" clause without boolean variable <case insensitive>, or if <case insensitive> evaluates to true, then the search is case-insensitive.

If <substring> is empty (""), <count> is 0.

Examples

In the following example, 1 occurrence will be found after the first count-substring, and 2 after the second (since case insensitive search is used there):

 set-string sub = "world"
 set-string str = "Hello world and hello World!"

 count-substring sub in str to num_occ
 pf-out "Found %ld occurrences!\n", num_occ

 count-substring sub in str to num_occ case-insensitive
 pf-out "Found %ld occurrences!\n", num_occ

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