New rtl::isUnicodeScalarValue, rtl::isSurrogate

There are apparently various places that want to check for a Unicode scalar
value rather than for a Unicode code point.  Changed those uses of
rtl::isUnicodeCodePoint where that was obvious.  (For changing
svtools/source/svrtf/svparser.cxx see 8e0fb74dc01927b60d8b868548ef8fe1d7a80ce3
"Revert 'svtools: HTML import: don't put lone surrogates in OUString'".)  Other
uses of rtl::isUnicodeCodePoint might also want to use rtl::isUnicodeScalarValue
instead.

As a side effect, this change also introduces rtl::isSurrogate, which is useful
in a few places as well.

Change-Id: I9245f4f98b83877145a4d392f0ddb7c5d824a535

1 files changed, 2 insertions, 2 deletions

diff --git a/stoc/source/uriproc/UriSchemeParser_vndDOTsunDOTstarDOTscript.cxx b/stoc/source/uriproc/UriSchemeParser_vndDOTsunDOTstarDOTscript.cxx
index c57670e27f20..6df3cd3e33ca 100644
--- a/stoc/source/uriproc/UriSchemeParser_vndDOTsunDOTstarDOTscript.cxx
+++ b/stoc/source/uriproc/UriSchemeParser_vndDOTsunDOTstarDOTscript.cxx
@@ -110,8 +110,8 @@ OUString parsePart(
                     }
                     encoded |= (n & 0x3F) << shift;
                 }
-                if (!utf8 || !rtl::isUnicodeCodePoint(encoded) || encoded < min
-                    || (encoded >= 0xD800 && encoded <= 0xDFFF))
+                if (!utf8 || !rtl::isUnicodeScalarValue(encoded)
+                    || encoded < min)
                 {
                     break;
                 }