1 files changed, 45 insertions, 0 deletions
diff --git a/lib/unicase/invariant.h b/lib/unicase/invariant.h
new file mode 100644
index 00000000..20151433
--- /dev/null
+++ b/lib/unicase/invariant.h
@@ -0,0 +1,45 @@
+/* Internal functions for Unicode character case mappings.
+   Copyright (C) 2009 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2009.
+
+   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/>.  */
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#include "unitypes.h"
+#include "uninorm.h"
+
+/* Return true if mapping NFD(S) to via MAPPING is a no-op.  */
+extern int
+       u8_is_invariant (const uint8_t *s, size_t n,
+			uint8_t * (*mapping) (const uint8_t *s, size_t n, const char *iso639_language,
+					      uninorm_t nf,
+					      uint8_t *resultbuf, size_t *lengthp),
+			const char *iso639_language,
+			bool *resultp);
+extern int
+       u16_is_invariant (const uint16_t *s, size_t n,
+			 uint16_t * (*mapping) (const uint16_t *s, size_t n, const char *iso639_language,
+						uninorm_t nf,
+						uint16_t *resultbuf, size_t *lengthp),
+			 const char *iso639_language,
+			 bool *resultp);
+extern int
+       u32_is_invariant (const uint32_t *s, size_t n,
+			 uint32_t * (*mapping) (const uint32_t *s, size_t n, const char *iso639_language,
+						uninorm_t nf,
+						uint32_t *resultbuf, size_t *lengthp),
+			 const char *iso639_language,
+			 bool *resultp);