strtoimax: port to HP-UX 11.11

[gnulib.git] / lib / unigbrk.in.h

diff --git a/lib/unigbrk.in.h b/lib/unigbrk.in.h
index c6056b3..8e1bc29 100644 (file)
--- 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) 2010-2013 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
@@ -53,13 +56,14 @@ enum
 
 /* Return the Grapheme_Cluster_Break property of a Unicode character. */
 extern int
-       uc_graphemeclusterbreak_property (ucs4_t uc);
+       uc_graphemeclusterbreak_property (ucs4_t uc)
+       _UC_ATTRIBUTE_CONST;
 
 /* ========================================================================= */
 
 /* Grapheme cluster breaks.  */
 
-/* Returns true if there is an grapheme cluster boundary between Unicode code
+/* Returns true if there is a grapheme cluster boundary between Unicode code
    points A and B.  A "grapheme cluster" is an approximation to a
    user-perceived character, which sometimes corresponds to multiple code
    points.  For example, an English letter followed by an acute accent can be
@@ -73,7 +77,46 @@ extern int
    Use A == 0 or B == 0 to indicate start of text or end of text,
    respectively. */
 extern bool
-       uc_is_grapheme_cluster_break (ucs4_t a, ucs4_t b);
+       uc_is_grapheme_break (ucs4_t a, ucs4_t b)
+       _UC_ATTRIBUTE_CONST;
+
+/* 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)
+       _UC_ATTRIBUTE_PURE;
+extern const uint16_t *
+       u16_grapheme_next (const uint16_t *s, const uint16_t *end)
+       _UC_ATTRIBUTE_PURE;
+extern const uint32_t *
+       u32_grapheme_next (const uint32_t *s, const uint32_t *end)
+       _UC_ATTRIBUTE_PURE;
+
+/* 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)
+       _UC_ATTRIBUTE_PURE;
+extern const uint16_t *
+       u16_grapheme_prev (const uint16_t *s, const uint16_t *start)
+       _UC_ATTRIBUTE_PURE;
+extern const uint32_t *
+       u32_grapheme_prev (const uint32_t *s, const uint32_t *start)
+       _UC_ATTRIBUTE_PURE;
+
+/* 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);
 
 /* ========================================================================= */