aboutsummaryrefslogtreecommitdiff
path: root/wcsmbs/mbrtoc16.c
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@gmail.com>2011-12-28 06:19:42 -0500
committerUlrich Drepper <drepper@gmail.com>2012-01-01 07:17:22 -0500
commitdb6af3ebf46a83b885455dc03a3c2c1c2c2dedec (patch)
tree942a59c7de0033cf9ab3231523130c323fa4b80c /wcsmbs/mbrtoc16.c
parent8ea79a616e43093f403927e425c197afe39196b7 (diff)
downloadglibc-db6af3ebf46a83b885455dc03a3c2c1c2c2dedec.tar
glibc-db6af3ebf46a83b885455dc03a3c2c1c2c2dedec.tar.gz
glibc-db6af3ebf46a83b885455dc03a3c2c1c2c2dedec.tar.bz2
glibc-db6af3ebf46a83b885455dc03a3c2c1c2c2dedec.zip
Add uchar.h support, part 1
c16 support for locales other than the C locale is still missing.
Diffstat (limited to 'wcsmbs/mbrtoc16.c')
-rw-r--r--wcsmbs/mbrtoc16.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/wcsmbs/mbrtoc16.c b/wcsmbs/mbrtoc16.c
new file mode 100644
index 0000000000..3a3a45ce1a
--- /dev/null
+++ b/wcsmbs/mbrtoc16.c
@@ -0,0 +1,122 @@
+/* Copyright (C) 2011 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@gnu.org>, 2011.
+
+ The GNU C Library 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 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library 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 the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <assert.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <gconv.h>
+#include <uchar.h>
+#include <wcsmbsload.h>
+
+#include <sysdep.h>
+
+#ifndef EILSEQ
+# define EILSEQ EINVAL
+#endif
+
+#if __STDC__ >= 20100L
+# define U(c) U##c
+#else
+# define U(c) L##c
+#endif
+
+
+/* This is the private state used if PS is NULL. */
+static mbstate_t state;
+
+size_t
+mbrtoc16 (char16_t *pc16, const char *s, size_t n, mbstate_t *ps)
+{
+ char16_t buf[1];
+ struct __gconv_step_data data;
+ int status;
+ size_t result;
+ size_t dummy;
+ const unsigned char *inbuf, *endbuf;
+ unsigned char *outbuf = (unsigned char *) (pc16 ?: buf);
+ const struct gconv_fcts *fcts;
+
+ /* Set information for this step. */
+ data.__invocation_counter = 0;
+ data.__internal_use = 1;
+ data.__flags = __GCONV_IS_LAST;
+ data.__statep = ps ?: &state;
+ data.__trans = NULL;
+
+ /* A first special case is if S is NULL. This means put PS in the
+ initial state. */
+ if (s == NULL)
+ {
+ outbuf = (unsigned char *) buf;
+ s = "";
+ n = 1;
+ }
+
+ /* Tell where we want the result. */
+ data.__outbuf = outbuf;
+ data.__outbufend = outbuf + sizeof (char16_t);
+
+ /* Get the conversion functions. */
+ fcts = get_gconv_fcts (_NL_CURRENT_DATA (LC_CTYPE));
+
+ /* Do a normal conversion. */
+ inbuf = (const unsigned char *) s;
+ endbuf = inbuf + n;
+ if (__builtin_expect (endbuf < inbuf, 0))
+ endbuf = (const unsigned char *) ~(uintptr_t) 0;
+ __gconv_fct fct = fcts->toc16->__fct;
+#ifdef PTR_DEMANGLE
+ if (fcts->toc16->__shlib_handle != NULL)
+ PTR_DEMANGLE (fct);
+#endif
+ status = DL_CALL_FCT (fct, (fcts->toc16, &data, &inbuf, endbuf,
+ NULL, &dummy, 0, 1));
+
+ /* There must not be any problems with the conversion but illegal input
+ characters. The output buffer must be large enough, otherwise the
+ definition of MB_CUR_MAX is not correct. All the other possible
+ errors also must not happen. */
+ assert (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT
+ || status == __GCONV_ILLEGAL_INPUT
+ || status == __GCONV_INCOMPLETE_INPUT
+ || status == __GCONV_FULL_OUTPUT);
+
+ if (status == __GCONV_OK || status == __GCONV_EMPTY_INPUT
+ || status == __GCONV_FULL_OUTPUT)
+ {
+ if (data.__outbuf != (unsigned char *) outbuf
+ && *(char16_t *) outbuf == U('\0'))
+ {
+ /* The converted character is the NUL character. */
+ assert (__mbsinit (data.__statep));
+ result = 0;
+ }
+ else
+ result = inbuf - (const unsigned char *) s;
+ }
+ else if (status == __GCONV_INCOMPLETE_INPUT)
+ result = (size_t) -2;
+ else
+ {
+ result = (size_t) -1;
+ __set_errno (EILSEQ);
+ }
+
+ return result;
+}