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authorRoland McGrath <roland@gnu.org>1996-07-26 04:35:31 +0000
committerRoland McGrath <roland@gnu.org>1996-07-26 04:35:31 +0000
commit036cc82fbc47a632c1ed3a310a1a29365fe48d3d (patch)
tree3822092b5e9f64de600329bca9d6b0a0bbadf0eb /wcsmbs/wcsnrtombs.c
parent1e16111cf1abdcc2d6a617e7ba48a80ce1556797 (diff)
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Fri Jul 26 04:41:28 1996 Ulrich Drepper <drepper@cygnus.com>
* intl/libintl.h: Define optimizing macros if __OPTIMIZE__ is defined, not __OPTIMIZED. (_nl_msg_cat_cntr): Move declaration outside macro definition to prevent "nested extern" warning. (dcgettext): Rename local variable `result' to `__result'. Thu Jul 25 22:46:30 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu> * locale/programs/localedef.c (__progname): Remove decl. (main): Use program_invocation_short_name instead of __progname. (usage): Use program_invocation_name instead of __progname. Fri Jul 26 03:46:08 1996 Ulrich Drepper <drepper@cygnus.com> * catgets/gencat.c: Use "libc" instead of PACKAGE. * locale/localedef.c: Ditto. * locale/locale.c: Ditto. * locale/findlocale.c (_nl_find_locale): Little optimization. Use new function `strndup'. * locale/loadlocale.c: Little optimization. Use constant value from `_nl_category_num_items' instead of byte-order dependend value from file. * locale/programs/ld-time.c (time_add): Correct string constant. * locale/programs/locale-spec.c: New file. * locale/programs/locale.c: Call `locale_special' function if no other field matches. * locale/programs/localedef.c: No need to define `program_name'. Use global variable `__progname'. * locale/programs/locfile.c (write_locale_data): Always write LC_MESSAGES data in LC_MESSAGES/SYS_LC_MESSAGES file. This is necessary since message catalogs are also installed in the LC_MESSAGES/ directory. * locale/programs/stringtrans.c (ADDC): Correctly use `encode_char' function instead of writing single bytes. (encode_char): Also handle little endian. * locale/setlocale.c (new_composite_name): Little optimization. Use return value of `memcpy'. * misc/ttyent.h: Pretty print prototypes, add missing parameter names, prepend parameter names with __ and use `__const' instead of `const'. * posix/unistd.h: Ditto. * stdlib/stdlib.h: Ditto. * string/string.h: Ditto. * posix/getconf.c: De-ASNI-fy. Recognize POSIX.2 constant names. Use `error' function instead of doing it by hand. * sysdeps/posix/sysconf.c: De-ANSI-fy. Handle _SC_COLL_WEIGHTS_MAX. * sysdeps/stub/sysconf.c: Handle _SC_CHARCLASS_NAME_MAX, _SC_COLL_WEIGHTS_MAX, _SC_EQUIV_CLASS_MAX, _SC_2_LOCALEDEF since these do depend on the platform. Add POSIX.4 symbols. * posix/posix2_lim.h: Add missing definition of _POSIX2_COLL_WEIGHTS_MAX. Change _POSIX2_EQUIV_CLASS_MAX and _POSIX2_CHARCLASS_NAME_MAX to high values since we have no fixed limit. * sysdeps/generic/confname.h: Add _SC_PAGE_SIZE as alias for _SC_PAGESIZE for buggy systems (= HP UX) out there. * wcsmbs/Makefile (routines): Add mbsnrtowcs and wcsnrtombs. * wcsmbs/mbsnrtowcs.c: New file. Non-standard implementation. * wcsmbs/wcsnrtombs.c: Ditto. * wcsmbs/wchar.h [__USE_GNU]: Add prototypes for mbsnrtowcs and wcsnrtombs. Thu Jul 25 00:25:54 Richard Henderson <rth@tamu.edu> * nss/nss_db/db-XXX.c: Kill trailing ; from lock defn as a matter of course. * nss/getXXent_r.c: Likewise. * nss/nsswitch.c: Likewise. * nss/nss_files/files-XXX.c: Likewise. * sysdeps/mach/hurd/dirstream.h (struct __dirstream): Likewise. * sysdeps/unix/bsd/telldir.c (struct record): Likewise. * sysdeps/unix/dirstream.h (struct __dirstream): Likewise.
Diffstat (limited to 'wcsmbs/wcsnrtombs.c')
-rw-r--r--wcsmbs/wcsnrtombs.c129
1 files changed, 129 insertions, 0 deletions
diff --git a/wcsmbs/wcsnrtombs.c b/wcsmbs/wcsnrtombs.c
new file mode 100644
index 0000000000..fb50a11732
--- /dev/null
+++ b/wcsmbs/wcsnrtombs.c
@@ -0,0 +1,129 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1996.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <wchar.h>
+
+#ifndef EILSEQ
+#define EILSEQ EINVAL
+#endif
+
+
+static const wchar_t encoding_mask[] =
+{
+ ~0x7ff, ~0xffff, ~0x1fffff, ~0x3ffffff
+};
+
+static const unsigned char encoding_byte[] =
+{
+ 0xc0, 0xe0, 0xf0, 0xf8, 0xfc
+};
+
+/* We don't need the state really because we don't have shift states
+ to maintain between calls to this function. */
+static mbstate_t internal;
+
+/* This is a non-standard function but it is very useful in the
+ implementation of stdio because we have to deal with unterminated
+ buffers. At most NWC wide character will be converted. */
+size_t
+__wcsnrtombs (dst, src, nwc, len, ps)
+ char *dst;
+ const wchar_t **src;
+ size_t nwc;
+ size_t len;
+ mbstate_t *ps;
+{
+ size_t written = 0;
+ const wchar_t *run = *src;
+
+ if (ps == NULL)
+ ps = &internal;
+
+ if (dst == NULL)
+ /* The LEN parameter has to be ignored if we don't actually write
+ anything. */
+ len = ~0;
+
+ while (written < len && nwc-- > 0)
+ {
+ wchar_t wc = *run++;
+
+ if (wc < 0 || wc > 0x7fffffff)
+ {
+ /* This is no correct ISO 10646 character. */
+ errno = EILSEQ;
+ return (size_t) -1;
+ }
+
+ if (wc == L'\0')
+ {
+ /* Found the end. */
+ if (dst != NULL)
+ *dst = '\0';
+ *src = NULL;
+ return written;
+ }
+ else if (wc < 0x80)
+ {
+ /* It's an one byte sequence. */
+ if (dst != NULL)
+ *dst++ = (char) wc;
+ ++written;
+ }
+ else
+ {
+ size_t step;
+
+ for (step = 2; step < 6; ++step)
+ if ((wc & encoding_mask[step - 2]) == 0)
+ break;
+
+ if (written + step >= len)
+ /* Too long. */
+ break;
+
+ if (dst != NULL)
+ {
+ size_t cnt = step;
+
+ dst[0] = encoding_byte[cnt - 2];
+
+ --cnt;
+ do
+ {
+ dst[cnt] = 0x80 | (wc & 0x3f);
+ wc >>= 6;
+ }
+ while (--cnt > 0);
+ dst[0] |= wc;
+
+ dst += step;
+ }
+
+ written += step;
+ }
+ }
+
+ /* Store position of first unprocessed word. */
+ *src = run;
+
+ return written;
+}
+weak_alias (__wcsnrtombs, wcsnrtombs)