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-rw-r--r--utf8.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/utf8.c b/utf8.c
index dc37353..ddfdc5e 100644
--- a/utf8.c
+++ b/utf8.c
@@ -246,6 +246,25 @@ int utf8_width(const char **start, size_t *remainder_p)
return git_wcwidth(ch);
}
+/*
+ * Returns the total number of columns required by a null-terminated
+ * string, assuming that the string is utf8. Returns strlen() instead
+ * if the string does not look like a valid utf8 string.
+ */
+int utf8_strwidth(const char *string)
+{
+ int width = 0;
+ const char *orig = string;
+
+ while (1) {
+ if (!string)
+ return strlen(orig);
+ if (!*string)
+ return width;
+ width += utf8_width(&string, NULL);
+ }
+}
+
int is_utf8(const char *text)
{
while (*text) {