X-Git-Url: https://git.carlh.net/gitweb/?p=dcpomatic.git;a=blobdiff_plain;f=src%2Flib%2Futil.cc;h=cd2d2e753b3827c74e6491c49583b2595c97ed7f;hp=7472047e87b206003cfd367a3fdfc6ae2e1a2bfc;hb=95f4db0a8bb5bbf742a0195fbbe17d304fb99507;hpb=1b5168ff5e624b1617059e529f30da460d81246c

diff --git a/src/lib/util.cc b/src/lib/util.cc
index 7472047e8..cd2d2e753 100644
--- a/src/lib/util.cc
+++ b/src/lib/util.cc
@@ -815,6 +815,25 @@ checked_fread (void* ptr, size_t size, FILE* stream, boost::filesystem::path pat
 	}
 }
 
+size_t
+utf8_strlen (string s)
+{
+	size_t const len = s.length ();
+	int N = 0;
+	for (size_t i = 0; i < len; ++i) {
+		unsigned char c = s[i];
+		if ((c & 0xe0) == 0xc0) {
+			++i;
+		} else if ((c & 0xf0) == 0xe0) {
+			i += 2;
+		} else if ((c & 0xf8) == 0xf0) {
+			i += 3;
+		}
+		++N;
+	}
+	return N;
+}
+
 #ifdef DCPOMATIC_VARIANT_SWAROOP
 
 /* Make up a key from the machine UUID */