Changeset: fab41aa10761 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB/rev/fab41aa10761
Modified Files:
monetdb5/modules/atoms/str.c
Branch: Dec2023
Log Message:
Uppercase and lowercase versions aren't necessarily the same length.
diffs (33 lines):
diff --git a/monetdb5/modules/atoms/str.c b/monetdb5/modules/atoms/str.c
--- a/monetdb5/modules/atoms/str.c
+++ b/monetdb5/modules/atoms/str.c
@@ -3809,15 +3809,23 @@ str_is_suffix(const char *s, const char
return strcmp(s + sl - sul, suffix);
}
+/* case insensitive endswith check */
int
str_is_isuffix(const char *s, const char *suffix, int sul)
{
- int sl = str_strlen(s);
-
- if (sl < sul)
- return -1;
- else
- return utf8casecmp(s + sl - sul, suffix);
+ const char *e = s + strlen(s);
+ const char *sf;
+
+ (void) sul;
+ /* note that the uppercase and lowercase forms of a character aren't
+ * necessarily the same length in their UTF-8 encodings */
+ for (sf = suffix; *sf && e > s; sf++) {
+ if ((*sf & 0xC0) != 0x80) {
+ while ((*--e & 0xC0) == 0x80)
+ ;
+ }
+ }
+ return *sf != 0 || utf8casecmp(e, suffix) != 0;
}
int
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