s3:lib/util_str: add strlen_m_ext() that takes input and output charset

The function calculates the number of units (8 or 16-bit, depending
on the destination charset), that would be needed to convert the
input string which is expected to be in in src_charset encoding
to the dst_charset (which should be a unicode charset).

1 files changed, 2 insertions, 0 deletions

diff --git a/source3/include/proto.h b/source3/include/proto.h
index 89aa623314..5e88476e44 100644
--- a/source3/include/proto.h
+++ b/source3/include/proto.h
@@ -1433,6 +1433,8 @@ char *strnrchr_m(const char *s, char c, unsigned int n);
 char *strstr_m(const char *src, const char *findstr);
 void strlower_m(char *s);
 void strupper_m(char *s);
+size_t strlen_m_ext(const char *s, const charset_t src_charset,
+		    const charset_t dst_charset);
 size_t strlen_m(const char *s);
 size_t strlen_m_term(const char *s);
 size_t strlen_m_term_null(const char *s);