glibc/string/strxfrm.c
Ulrich Drepper 6d52618b15 Update from main archive 961219
Thu Dec 19 23:28:33 1996  Ulrich Drepper  <drepper@cygnus.com>

	* resolv/resolv.h: Update from BIND 4.9.5-P1.
	* resolv/res_comp.c: Likewise.
	* resolv/res_debug.c: Likewise.
	* resolv/Banner: Update version number.

Thu Dec 19 20:58:53 1996  Ulrich Drepper  <drepper@cygnus.com>

	* elf/dlfcn.h: Add extern "C" wrapper.

	* io/utime.h: Don't define NULL since this isn't allowed in POSIX.
	* io/sys/stat.h: Declare `lstat' only if __USE_BSD ||
	__USE_XOPEN_EXTENDED.
	* locale/locale.h: Define NULL.
	* math/math.c: Don't include <errno.h> to define math errors.
	* stdlib/stdlib.h: Likewise.
	* posix/unistd.h: Don't declare environ.
	* posix/sys/utsname.h (struct utsname): Declare member domainname
	as __domainname is !__USE_GNU.
	* signal/signal.h: Declare size_t only if __USE_BSD ||
	__USE_XOPEN_EXTENDED.
	* stdio/stdio.h: Don't declare cuserid when __USE_POSIX, but
	instead when __USE_XOPEN.
	* string/string.h: Define strndup only if __USE_GNU.
	* sysdeps/unix/sysv/linux/clock.c: New file.
	* sysdeps/unix/sysv/linux/timebits.h: Define CLOCKS_PER_SEC as
	1000000 per X/Open standard.
	* features.h: Add code to recognize _POSIX_C_SOURCE value 199309.
	Define __USE_POSIX199309.
	* posix/unistd.h: Declare fdatasync only if __USE_POSIX199309.
	* time/time.c: Declare nanosleep only if __USE_POSIX199309.
	Patches by Rüdiger Helsch <rh@unifix.de>.

	* locale/locale.h: Add declaration of newlocale and freelocale.

	* new-malloc/Makefile (distibute): Add mtrace.awk.
	(dist-routines): Add mcheck and mtrace.
	(install-lib, non-lib.a): Define as libmcheck.a.
	* new-malloc/malloc.h: Add declaration of __malloc_initialized.
	* new-malloc/mcheck.c: New file.
	* new-malloc/mcheck.h: New file.
	* new-malloc/mtrace.c: New file.
	* new-malloc/mtrace.awk: New file.

	* posix/unistd.h: Correct prototype for usleep.
	* sysdeps/unix/bsd/usleep.c: De-ANSI-declfy.  Correct return type.
	* sysdeps/unix/sysv/linux/usleep.c: Real implementation based on
	nanosleep.

	* signal/signal.h: Change protoype of __sigpause to take two
	arguments.  Remove prototype for sigpause.  Add two different
	macros named sigpause selected when __USE_BSD or __USE_XOPEN
	are defined.  This is necessary since the old BSD definition
	of theis function collides with the X/Open definition.
	* sysdeps/posix/sigpause.c: Change function definition to also
	fit X/Open definition.

	* sysdeps/libm-i387/e_exp.S: Make sure stack is empty when the
	function is left.
	* sysdeps/libm-i387/e_expl.S: Likewise.
	Patch by HJ Lu.

1996-12-17  Paul Eggert  <eggert@twinsun.com>

	* many, many files: Spelling corrections.
	* catgets/catgetsinfo.h (mmapped):
	Renamed from mmaped (in struct catalog_info.status).
	* mach/err_kern.sub (err_codes_unix), string/stratcliff.c (main):
	Fix spelling in message.
	* po/libc.pot: Fix spelling in message for `zic'; this anticipates
	a fix in the tzcode distribution.

Wed Dec 18 15:48:02 1996  Ulrich Drepper  <drepper@cygnus.com>

	* time/strftime.c: Implement ^ flag to cause output be converted
	to use upper case characters.

	* time/zic.c: Update from ADO tzcode1996n.

Wed Dec 18 14:29:24 1996  Erik Naggum  <erik@naggum.no>

	* time/strftime.c (add): Don't change global `i' until all is over.
	Define NULL is not already defined.

Tue Dec 17 09:49:03 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* libio/iovsprintf.c (_IO_vsprintf): Change `&sf' to `&sf._sbf._f'
	to avoid the need for a cast.
	* libio/iovsscanf.c (_IO_vsscanf): Likewise.

	* sunrpc/rpc/xdr.h: Add prototype for xdr_free.
1996-12-20 01:39:50 +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 with 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;
}