2009-03-08 Bruno Haible <bruno@clisp.org>
+ New module 'unicase/u8-is-invariant'.
+ * lib/unicase/u8-is-invariant.c: New file.
+ * lib/unicase/invariant.h: New file.
+ * lib/unicase/u-is-invariant.h: New file.
+ * modules/unicase/u8-is-invariant: New file.
+
Tests for module 'unicase/u32-casecoll'.
* modules/unicase/u32-casecoll-tests: New file.
* tests/unicase/test-u32-casecoll.c: New file.
--- /dev/null
+/* 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);
--- /dev/null
+/* Test whether a Unicode string is invariant under a given case mapping.
+ 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/>. */
+
+int
+FUNC (const UNIT *s, size_t n,
+ UNIT * (*mapping) (const UNIT *s, size_t n, const char *iso639_language,
+ uninorm_t nf,
+ UNIT *resultbuf, size_t *lengthp),
+ const char *iso639_language,
+ bool *resultp)
+{
+ UNIT normsbuf[2048 / sizeof (UNIT)];
+ UNIT *norms;
+ size_t norms_length;
+ UNIT mappedbuf[2048 / sizeof (UNIT)];
+ UNIT *mapped;
+ size_t mapped_length;
+
+ /* Apply canonical decomposition to S. */
+ norms_length = sizeof (normsbuf) / sizeof (UNIT);
+ norms = U_NORMALIZE (UNINORM_NFD, s, n, normsbuf, &norms_length);
+ if (norms == NULL)
+ /* errno is set here. */
+ return -1;
+
+ /* Apply mapping. */
+ mapped_length = sizeof (mappedbuf) / sizeof (UNIT);
+ mapped = mapping (norms, norms_length, iso639_language, NULL,
+ mappedbuf, &mapped_length);
+ if (mapped == NULL)
+ {
+ if (norms != normsbuf)
+ {
+ int saved_errno = errno;
+ free (norms);
+ errno = saved_errno;
+ }
+ return -1;
+ }
+
+ /* Compare. */
+ *resultp = (mapped_length == norms_length
+ && U_CMP (mapped, norms, norms_length) == 0);
+
+ if (mapped != mappedbuf)
+ free (mapped);
+ if (norms != normsbuf)
+ free (norms);
+ return 0;
+}
--- /dev/null
+/* Test whether an UTF-8 string is invariant under a given case mapping.
+ 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 <config.h>
+
+/* Specification. */
+#include "unicase/invariant.h"
+
+#include <errno.h>
+#include <stdlib.h>
+
+#include "uninorm.h"
+#include "unistr.h"
+
+#define FUNC u8_is_invariant
+#define UNIT uint8_t
+#define U_NORMALIZE u8_normalize
+#define U_CMP u8_cmp
+#include "u-is-invariant.h"
--- /dev/null
+Description:
+Test whether an UTF-8 string is invariant under a given case mapping.
+
+Files:
+lib/unicase/u8-is-invariant.c
+lib/unicase/invariant.h
+lib/unicase/u-is-invariant.h
+
+Depends-on:
+unitypes
+uninorm/base
+uninorm/u8-normalize
+uninorm/nfd
+unistr/u8-cmp
+stdbool
+
+configure.ac:
+
+Makefile.am:
+lib_SOURCES += unicase/u8-is-invariant.c
+
+Include:
+"unicase/invariant.h"
+
+License:
+LGPL
+
+Maintainer:
+Bruno Haible
+
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