X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Funigbrk.in.h;h=c95b75be051c98f74f21b3fb9bcca012cf1e90cb;hb=06f7622100701688a981cb30c50bfff789522516;hp=c6056b37600872678691ed07c8c66bed451922bd;hpb=db6d3e6221185974c47f3123caaa962d26901838;p=gnulib.git

diff --git a/lib/unigbrk.in.h b/lib/unigbrk.in.h
index c6056b376..c95b75be0 100644
--- a/lib/unigbrk.in.h
+++ b/lib/unigbrk.in.h
@@ -1,5 +1,5 @@
 /* Grapheme cluster breaks in Unicode strings.
-   Copyright (C) 2010 Free Software Foundation, Inc.
+   Copyright (C) 2010-2011 Free Software Foundation, Inc.
    Written by Ben Pfaff <blp@cs.stanford.edu>, 2010.
 
    This program is free software: you can redistribute it and/or modify it
@@ -21,6 +21,9 @@
 /* Get bool.  */
 #include <stdbool.h>
 
+/* Get size_t. */
+#include <stddef.h>
+
 #include "unitypes.h"
 
 #ifdef __cplusplus
@@ -75,6 +78,38 @@ extern int
 extern bool
        uc_is_grapheme_cluster_break (ucs4_t a, ucs4_t b);
 
+/* Returns the start of the next grapheme cluster following S, or NULL if the
+   end of the string has been reached. */
+extern const uint8_t *
+       u8_grapheme_next (const uint8_t *s, const uint8_t *end);
+extern const uint16_t *
+       u16_grapheme_next (const uint16_t *s, const uint16_t *end);
+extern const uint32_t *
+       u32_grapheme_next (const uint32_t *s, const uint32_t *end);
+
+/* Returns the start of the previous grapheme cluster before S, or NULL if the
+   start of the string has been reached. */
+extern const uint8_t *
+       u8_grapheme_prev (const uint8_t *s, const uint8_t *start);
+extern const uint16_t *
+       u16_grapheme_prev (const uint16_t *s, const uint16_t *start);
+extern const uint32_t *
+       u32_grapheme_prev (const uint32_t *s, const uint32_t *start);
+
+/* Determine the grapheme cluster boundaries in S, and store the result at
+   p[0..n-1].  p[i] = 1 means that a new grapheme cluster begins at s[i].  p[i]
+   = 0 means that s[i-1] and s[i] are part of the same grapheme cluster.  p[0]
+   will always be 1.
+ */
+extern void
+       u8_grapheme_breaks (const uint8_t *s, size_t n, char *p);
+extern void
+       u16_grapheme_breaks (const uint16_t *s, size_t n, char *p);
+extern void
+       u32_grapheme_breaks (const uint32_t *s, size_t n, char *p);
+extern void
+       ulc_grapheme_breaks (const char *s, size_t n, char *p);
+
 /* ========================================================================= */
 
 #ifdef __cplusplus