glibc/string/strxfrm.c
Roland McGrath 503054c0dd Wed Jul 3 16:29:41 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* nss/getXXbyYY_r.c (REENTRANT_NAME): Cast FCT in __nss_next call.

	* sysdeps/generic/sbrk.c: Always call __brk (0) to update __curbrk.

	* malloc/malloc-size.c (malloc_usable_size): Renamed from
	malloc_object_allocation_size.
	* malloc/malloc.h: Fix decl.

	* sys/select.h: New file, wrapper header.

	* posix/sys/types.h [__USE_BSD]: Include <sys/select.h>; remove
	fd_set, associated macros, and select decl.

	* sysdeps/posix/isfdtype.c: New file.

Tue Jul  2 23:45:14 1996  Ulrich Drepper  <drepper@cygnus.com>

	The latest Japanese proposal for POSIX locales renames the
	CHARMAP keyword in locale definition files to CHARCONV.
	* locale/programs/ld-ctype.c, locale/programs/locales.h: Rename
        function ctype_is_charmap to ctype_is_charconv.
	* locale/programs/locfile-kw.gperf: Replace charmap keyword with
        charconv.
	* locale/programs/locfile-token.h: Add definition of token
        charconv.
	* locale/programs/locfile.c: Recognize charconv keyword.  Rename
        lables according to this.

	* locale/weight.h (get_weight): Cast constants to prevent
        warnings.

	* stdlib/strtod.c, stdlib/strtol.c, string/strcoll.c,
	string/strxfrm.c: Add some more casts to prevent signed<->unsigned
	warnings.

	New stuff described in P1003.1g.
	* misc/Makefile (headers): Add sys/select.h.
	(routines): Add pselect.
	* misc/sys/select.h: New file.  Declare select functions and
	needed data types and macros.
	* sysdeps/generic/pselect.c: New file.  Add generic implementation
	of pselect() function which uses select().

	* posix/getconf.c: Recognize new variables from P1003.1g.
	* posix/posix1_lim.h: Define _POSIX_FD_SETSIZE, _POSIX_QLIMIT,
	_POSIX_HIWAT, and _POSIX_UIO_MAXIOV.
	* posix/unistd.h: Add description of the P1003.1g variables.
	* sysdeps/generic/confname.h: Define _SC_* values for new
	variables.
	* sysdeps/posix/fpathconf.c (fpathconf): Add handling of
	_PC_SOCK_MAXBUF.
	* sysdeps/stub/fpathconf.c (fpathconf): Ditto.
	* sysdeps/posix/sysconf.c (sysconf): Add handling of new
	P1003.1g variables.
	* sysdeps/stub/sysconf.c (sysconf): Ditto.
	* sysdeps/unix/sysv/linux/posix_opt.h: Define _POSIX_POLL and
	_POSIX_SELECT since Linux has this.

	* socket/Makefile (routines): Add isfdtype.
	* sysdeps/generic/sys/socket.h: Add prototype for isfdtype.
	* sysdeps/stub/isfdtype.c: New file.  Stub implementation of
	isfdtype.

	* wcsmbs/wcrtomb.c (wcrtomb): Fix typo.
1996-07-04 00:07:18 +00:00

237 lines
5.9 KiB
C

/* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
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 <stddef.h>
#include <stdlib.h>
#include <string.h>
#ifndef WIDE_VERSION
# define STRING_TYPE char
# define USTRING_TYPE unsigned char
# define L_(Ch) Ch
# define STRXFRM strxfrm
# define STRLEN strlen
# define STPNCPY __stpncpy
#endif
/* Include the shared helper functions. `strxfrm'/`wcsxfrm' also use
these functions. */
#include "../locale/weight.h"
#ifndef WIDE_VERSION
/* Write 32 bit value UTF-8 encoded but only if enough space is left. */
static __inline size_t
print_val (u_int32_t value, char *dest, size_t max, size_t act)
{
char tmp[6];
int idx = 0;
if (value < 0x80)
tmp[idx++] = (char) value;
else
{
tmp[idx++] = '\x80' + (char) (value & 0x3f);
value >>= 6;
if (value < 0x20)
tmp[idx++] = '\xc0' + (char) value;
else
{
tmp[idx++] = '\x80' + (char) (value & 0x3f);
value >>= 6;
if (value < 0x10)
tmp[idx++] = '\xe0' + (char) value;
else
{
tmp[idx++] = '\x80' + (char) (value & 0x3f);
value >>= 6;
if (value < 0x08)
tmp[idx++] = '\xf0' + (char) value;
else
{
tmp[idx++] = '\x80' + (char) (value & 0x3f);
value >>= 6;
if (value < 0x04)
tmp[idx++] = '\xf8' + (char) value;
else
{
tmp[idx++] = '\x80' + (char) (value & 0x3f);
tmp[idx++] = '\xfc' + (char) (value >> 6);
}
}
}
}
}
while (idx-- > 0)
{
if (act < max)
dest[act] = tmp[idx];
++act;
}
return act;
}
#else
static __inline size_t
print_val (u_int32_t value, wchar_t *dest, size_t max, size_t act)
{
/* We cannot really assume wchar_t is 32 bits wide. But it is for
GCC and so we don't do much optimization for the other case. */
if (sizeof (wchar_t) == 4)
{
if (act < max)
dest[act] = (wchar_t) value;
++act;
}
else
{
wchar_t tmp[3];
size_t idx = 0;
if (value < 0x8000)
tmp[idx++] = (wchar_t) act;
else
{
tmp[idx++] = (wchar_t) (0x8000 + (value & 0x3fff));
value >>= 14;
if (value < 0x2000)
tmp[idx++] = (wchar_t) (0xc000 + value);
else
{
tmp[idx++] = (wchar_t) (0x8000 + (value & 0x3fff));
value >>= 14;
tmp[idx++] = (wchar_t) (0xe000 + value);
}
}
while (idx-- > 0)
{
if (act < max)
dest[act] = tmp[idx];
++act;
}
}
return act;
}
#endif
/* Transform SRC into a form such that the result of strcmp
on two strings that have been transformed by strxfrm is
the same as the result of strcoll on the two strings before
their transformation. The transformed string is put in at
most N characters of DEST and its length is returned. */
size_t
STRXFRM (STRING_TYPE *dest, const STRING_TYPE *src, size_t n)
{
weight_t *forw = NULL;
weight_t *backw = NULL;
size_t pass;
size_t written;
/* If the current locale does not specify locale data we use normal
8-bit string comparison. */
if (collate_nrules == 0)
{
if (n != 0)
STPNCPY (dest, src, n);
return STRLEN (src);
}
/* Get full information about the string. This means we get
information for all passes in a special data structure. */
get_string (src, forw, backw);
/* Now we have all the information. In at most the given number of
passes we can finally decide about the order. */
written = 0;
for (pass = 0; pass < collate_nrules; ++pass)
{
int forward = (collate_rules[pass] & sort_forward) != 0;
const weight_t *run = forward ? forw : backw;
int idx = forward ? 0 : run->data[pass].number - 1;
do
{
int ignore = 0;
u_int32_t w;
/* Here we have to check for IGNORE entries. If these are
found we count them and go on witht he next value. */
while ((w = run->data[pass].value[idx]) == (u_int32_t) IGNORE_CHAR)
{
++ignore;
if ((forward && ++idx >= run->data[pass].number)
|| (!forward && --idx < 0))
{
weight_t *nextp = forward ? run->next : run->prev;
if (nextp == NULL)
{
w = 0;
break;
}
run = nextp;
idx = forward ? 0 : run->data[pass].number - 1;
}
}
/* Now we have information of the number of ignored weights
and the value of the next weight. We have to add 2
because 0 means EOS and 1 is the intermediate string end. */
if ((collate_rules[pass] & sort_position) != 0)
written = print_val (ignore + 2, dest, n, written);
if (w != 0)
written = print_val (w, dest, n, written);
/* We have to increment the index counters. */
if ((forward && ++idx >= run->data[pass].number)
|| (!forward && --idx < 0))
if (forward)
{
run = run->next;
idx = 0;
}
else
{
run = run->prev;
if (run != NULL)
idx = run->data[pass].number - 1;
}
}
while (run != NULL);
/* Write marker for end of word. */
if (pass + 1 < collate_nrules)
written = print_val (1, dest, n, written);
}
/* Terminate string. */
if (written < n)
dest[written] = L_('\0');
/* Return length without counting the terminating '\0'. */
return written;
}