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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)