fn:normalize-space
Normalizes whitespace
Description
The fn:normalize-space function collapses whitespace in a string. Specifically, it performs three steps:
- Replaces each carriage return (#xD), line feed (#xA), and tab (#x9) character with a single space (#x20)
- Collapses all consecutive spaces into a single space
- Removes all leading and trailing spaces
This description is © Copyright 2007, Priscilla Walmsley. It is excerpted from the book XQuery by Priscilla Walmsley, O'Reilly, 2007. For a complete explanation of this function, please refer to Appendix A of the book.
Arguments and Return Type
| Name | Type |
|---|---|
$arg |
xs:string? |
| return value | xs:string |
Examples
| XPath Example | Results |
|---|---|
normalize-space('query') |
query |
normalize-space(' query ') |
query |
normalize-space('xml query') |
xml query |
normalize-space('xml query') |
xml query |
normalize-space('xml
query') |
xml query |
normalize-space('') |
zero-length string |
normalize-space(' ') |
zero-length string |
normalize-space(()) |
zero-length string |
normalize-space(
<element> query </element>) |
query |
See Also
| functx:trim | Trims leading and trailing whitespace |
| functx:left-trim | Trims leading whitespace |
| functx:right-trim | Trims trailing whitespace |
History
| Published On | Last Updated | Contributor(s) |
|---|---|---|
| 2006-06-27 | 2007-02-26 | W3C, XQuery 1.0 and XPath 2.0 Functions and Operators, http://www.w3.org/TR/xpath-functions/ |
Recommended Reading:
