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author | Roland McGrath <roland@gnu.org> | 1996-07-26 04:35:31 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1996-07-26 04:35:31 +0000 |
commit | 036cc82fbc47a632c1ed3a310a1a29365fe48d3d (patch) | |
tree | 3822092b5e9f64de600329bca9d6b0a0bbadf0eb /wcsmbs/wcsnrtombs.c | |
parent | 1e16111cf1abdcc2d6a617e7ba48a80ce1556797 (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.c | 129 |
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) |