HP 3000 Manuals HP 3000 Manuals
func strpos
String position. Returns the index of the first occurrence of one string
in another.
Syntax
strpos (source searchstring [position])
If searchstring is not found in source then zero (0) is returned.
Formal Declaration
strpos:u32 (source:str searchstring:str [position:u32=1])
Parameters
source The string in which searchstring is to be found.
searchstring The string to be found in source. It may be either a
single- or double-quoted string literal, or a
back-quoted regular expression.
position The character position in source where the search is to
begin. If this parameter is not specified, the search
starts at the first character. If this value is greater
than the size of the source string, a zero result is
returned.
Examples
$nmdebug > var source "Oh where oh where has my little dog gone"
$nmdebug > var searchstring "where"
$nmdebug > var first = strpos(source, searchstring)
$nmdebug > wl first
$4
Look for the string "where" in the source string and print the position
where it was found.
$nmdebug > first = first + strlen(searchstring)
$nmdebug > var second = strpos(source, searchstring, first)
$nmdebug > wl second
$d
Look for the next occurrence of "where" in the source string and print
the position where it was found.
$nmdebug > second = second + strlen(searchstring)
$nmdebug > var third = strpos(source, searchstring, second)
$nmdebug > wl third
#0
Look for another occurrence of "where" in the source string. Since the
search string is not found, the value of zero (0) is returned.
Limitations, Restrictions
none