functx:substring-before-match
The substring before the last text that matches a regex
Description
The functx:substring-before-match function returns the part of $arg that appears before the first match of $regex. If $arg does not match $regex, the entire $arg is returned. If $arg is the empty sequence, a zero-length string is returned.
Parameters |
Description |
|---|---|
arg:string() |
the string to substring |
regex:string() |
the regular expression |
Examples
XPath |
Results |
|---|---|
functx:substring-before-match(‘abc-def-ghi’, ‘[dg]’) |
abc- |
functx:substring-before-match(‘abc-def-ghi’, ‘[dg]’)functx:substring-before-match(‘abcd-abcd’, ‘bc?’) |
a |
functx:substring-before-match(‘abcd-abcd’, ‘x’) |
abcd-abcd |