utf8: fix utf8_is_printable

diff --git a/src/shared/utf8.c b/src/shared/utf8.c
index a8e28accd3b20e41aad631bda2d08a371cd5ee4a..31120af046f1b091caf9253fa6dcae281ff3b369 100644 (file)
--- a/src/shared/utf8.c
+++ b/src/shared/utf8.c
@@ -141,14 +141,15 @@ bool utf8_is_printable(const char* str, size_t length) {
 
         assert(str);
 
-        for (p = (const uint8_t*) str; length; p++) {
+        for (p = (const uint8_t*) str; length;) {
                 int encoded_len = utf8_encoded_valid_unichar((const char *)p);
-                int32_t val = utf8_encoded_to_unichar((const char*)p);
+                int val = utf8_encoded_to_unichar((const char*)p);
 
                 if (encoded_len < 0 || val < 0 || is_unicode_control(val))
                         return false;
 
                 length -= encoded_len;
+                p += encoded_len;
         }
 
         return true;

diff --git a/src/test/test-utf8.c b/src/test/test-utf8.c
index 7bd0db173a213f62c36df414d63703cdf806cc46..f0182ee9afdb82c3480ed0d6bc75bb7097379e4b 100644 (file)
--- a/src/test/test-utf8.c
+++ b/src/test/test-utf8.c
@@ -26,6 +26,7 @@ static void test_utf8_is_printable(void) {
         assert_se(utf8_is_printable("ascii is valid\tunicode", 22));
         assert_se(utf8_is_printable("\342\204\242", 3));
         assert_se(!utf8_is_printable("\341\204", 2));
+        assert_se(utf8_is_printable("ąę", 4));
 }
 
 static void test_utf8_is_valid(void) {