Imported Upstream version 0.9.6upstream/0.9.6

1 files changed, 130 insertions, 0 deletions

diff --git a/lib/unigbrk.h b/lib/unigbrk.h
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+/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
+/* Grapheme cluster breaks in Unicode strings.
+   Copyright (C) 2010-2015 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
+   under the terms of the GNU Lesser General Public License as published
+   by the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _UNIGBRK_H
+#define _UNIGBRK_H
+
+/* Get bool.  */
+#include <unistring/stdbool.h>
+
+/* Get size_t. */
+#include <stddef.h>
+
+#include "unitypes.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* ========================================================================= */
+
+/* Property defined in Unicode Standard Annex #29, section "Grapheme Cluster
+   Boundaries"
+   <http://unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries> */
+
+/* Possible values of the Grapheme_Cluster_Break property.
+   This enumeration may be extended in the future.  */
+enum
+{
+  GBP_OTHER        = 0,
+  GBP_CR           = 1,
+  GBP_LF           = 2,
+  GBP_CONTROL      = 3,
+  GBP_EXTEND       = 4,
+  GBP_PREPEND      = 5,
+  GBP_SPACINGMARK  = 6,
+  GBP_L            = 7,
+  GBP_V            = 8,
+  GBP_T            = 9,
+  GBP_LV           = 10,
+  GBP_LVT          = 11,
+  GBP_RI           = 12
+};
+
+/* Return the Grapheme_Cluster_Break property of a Unicode character. */
+extern int
+       uc_graphemeclusterbreak_property (ucs4_t uc)
+       _UC_ATTRIBUTE_CONST;
+
+/* ========================================================================= */
+
+/* Grapheme cluster breaks.  */
+
+/* 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
+   expressed as two consecutive Unicode code points, but it is perceived by the
+   user as only a single character and therefore constitutes a single grapheme
+   cluster.
+
+   Implements extended (not legacy) grapheme cluster rules, because UAX #29
+   indicates that they are preferred.
+
+   Use A == 0 or B == 0 to indicate start of text or end of text,
+   respectively. */
+extern bool
+       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);
+
+/* ========================================================================= */
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _UNIGBRK_H */