text: add mem{r,}chr(3) based byte search functions

These are generally implemented efficiently in libc.
While memrchr(3) is non-standard, it is a common extension.
If it is not available, we use a simple C implementation from musl.

1 files changed, 2 insertions, 0 deletions

diff --git a/text.h b/text.h
index 0e372c1..c2a5812 100644
--- a/text.h
+++ b/text.h
@@ -97,6 +97,8 @@ bool text_iterator_byte_prev(Iterator*, char *b);
 /* if the new position is at EOF a NUL byte (which is not actually
  * part of the file) is read. */
 bool text_iterator_byte_next(Iterator*, char *b);
+bool text_iterator_byte_find_prev(Iterator*, char b);
+bool text_iterator_byte_find_next(Iterator*, char b);
 /* move to the next/previous UTF-8 encoded Unicode codepoint
  * and set c (if it is non NULL) to the first byte */
 bool text_iterator_codepoint_next(Iterator *it, char *c);