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+/*-
+ * Copyright (c) 2002 Tim J. Robbins
+ * All rights reserved.
+ *
+ * Copyright (c) 2013 Ed Schouten <ed@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/*
+ * Test program for mbrtoc16() as specified by ISO/IEC 9899:2011.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <assert.h>
+#include <errno.h>
+#include <limits.h>
+#include <locale.h>
+#include <stdio.h>
+#include <string.h>
+#include <uchar.h>
+
+int
+main(int argc, char *argv[])
+{
+ mbstate_t s;
+ size_t len;
+ char16_t c16;
+
+ /*
+ * C/POSIX locale.
+ */
+
+ printf("1..1\n");
+
+ /* Null wide character, internal state. */
+ assert(mbrtoc16(&c16, "", 1, NULL) == 0);
+ assert(c16 == 0);
+
+ /* Null wide character. */
+ memset(&s, 0, sizeof(s));
+ assert(mbrtoc16(&c16, "", 1, &s) == 0);
+ assert(c16 == 0);
+
+ /* Latin letter A, internal state. */
+ assert(mbrtoc16(NULL, 0, 0, NULL) == 0);
+ assert(mbrtoc16(&c16, "A", 1, NULL) == 1);
+ assert(c16 == L'A');
+
+ /* Latin letter A. */
+ memset(&s, 0, sizeof(s));
+ assert(mbrtoc16(&c16, "A", 1, &s) == 1);
+ assert(c16 == L'A');
+
+ /* Incomplete character sequence. */
+ c16 = L'z';
+ memset(&s, 0, sizeof(s));
+ assert(mbrtoc16(&c16, "", 0, &s) == (size_t)-2);
+ assert(c16 == L'z');
+
+ /* Check that mbrtoc16() doesn't access the buffer when n == 0. */
+ c16 = L'z';
+ memset(&s, 0, sizeof(s));
+ assert(mbrtoc16(&c16, "", 0, &s) == (size_t)-2);
+ assert(c16 == L'z');
+
+ /*
+ * UTF-8.
+ */
+
+ assert(strcmp(setlocale(LC_CTYPE, "en_US.UTF-8"), "en_US.UTF-8") == 0);
+
+ /* Null wide character, internal state. */
+ assert(mbrtoc16(NULL, 0, 0, NULL) == 0);
+ assert(mbrtoc16(&c16, "", 1, NULL) == 0);
+ assert(c16 == 0);
+
+ /* Null wide character. */
+ memset(&s, 0, sizeof(s));
+ assert(mbrtoc16(&c16, "", 1, &s) == 0);
+ assert(c16 == 0);
+
+ /* Latin letter A, internal state. */
+ assert(mbrtoc16(NULL, 0, 0, NULL) == 0);
+ assert(mbrtoc16(&c16, "A", 1, NULL) == 1);
+ assert(c16 == L'A');
+
+ /* Latin letter A. */
+ memset(&s, 0, sizeof(s));
+ assert(mbrtoc16(&c16, "A", 1, &s) == 1);
+ assert(c16 == L'A');
+
+ /* Incomplete character sequence (zero length). */
+ c16 = L'z';
+ memset(&s, 0, sizeof(s));
+ assert(mbrtoc16(&c16, "", 0, &s) == (size_t)-2);
+ assert(c16 == L'z');
+
+ /* Incomplete character sequence (truncated double-byte). */
+ memset(&s, 0, sizeof(s));
+ c16 = 0;
+ assert(mbrtoc16(&c16, "\xc3", 1, &s) == (size_t)-2);
+
+ /* Same as above, but complete. */
+ memset(&s, 0, sizeof(s));
+ c16 = 0;
+ assert(mbrtoc16(&c16, "\xc3\x84", 2, &s) == 2);
+ assert(c16 == 0xc4);
+
+ /* Test restarting behaviour. */
+ memset(&s, 0, sizeof(s));
+ c16 = 0;
+ assert(mbrtoc16(&c16, "\xc3", 1, &s) == (size_t)-2);
+ assert(c16 == 0);
+ assert(mbrtoc16(&c16, "\xb7", 1, &s) == 1);
+ assert(c16 == 0xf7);
+
+ /* Surrogate pair. */
+ memset(&s, 0, sizeof(s));
+ c16 = 0;
+ assert(mbrtoc16(&c16, "\xf0\x9f\x92\xa9", 4, &s) == 4);
+ assert(c16 == 0xd83d);
+ assert(mbrtoc16(&c16, "", 0, &s) == (size_t)-3);
+ assert(c16 == 0xdca9);
+
+ printf("ok 1 - mbrtoc16()\n");
+
+ return (0);
+}