mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 08:40:07 +00:00
6796bc807a
1998-09-06 09:53 -0400 Zack Weinberg <zack@rabi.phys.columbia.edu> * Makeconfig (+gccwarn): Remove -Wno-parentheses. * elf/dl-open.c: Quiet -Wparentheses warnings. * iconvdata/johab.c: Likewise. * iconvdata/uhc.c: Likewise. * inet/inet_net.c: Likewise. * io/fts.c: Likewise. * locale/newlocale.c: Likewise. * misc/getttyent.c: Likewise. * misc/mntent_r.c: Likewise. * misc/ttyslot.c: Likewise. * nscd/nscd_conf.c: Likewise. * nss/nsswitch.c: Likewise. * resolv/gethnamaddr.c: Likewise. * resolv/nsap_addr.c: Likewise. * resolv/res_debug.c: Likewise. * stdio-common/_itoa.c: Likewise. * stdlib/strtod.c: Likewise. * string/strverscmp.c: Likewise. * sunrpc/svc.c: Likewise. * sysdeps/libm-ieee754/e_cosh.c: Likewise. * sysdeps/libm-ieee754/e_gamma_r.c: Likewise. * sysdeps/libm-ieee754/e_sinh.c: Likewise. * sysdeps/posix/getaddrinfo.c: Likewise. * include/dlfcn.h: Likewise. * elf/dlfcn.h: Declare dladdr only for __USE_GNU. Define RTLD_DEFAULT.
113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/* Compare strings while treating digits characters numerically.
|
|
Copyright (C) 1997 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Jean-François Bignolles <bignolle@ecoledoc.ibp.fr>, 1997.
|
|
|
|
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 <string.h>
|
|
#include <ctype.h>
|
|
|
|
/* states: S_N: normal, S_I: comparing integral part, S_F: comparing
|
|
fractionnal parts, S_Z: idem but with leading Zeroes only */
|
|
#define S_N 0x0
|
|
#define S_I 0x4
|
|
#define S_F 0x8
|
|
#define S_Z 0xC
|
|
|
|
/* result_type: CMP: return diff; LEN: compare using len_diff/diff */
|
|
#define CMP 2
|
|
#define LEN 3
|
|
|
|
|
|
/* Compare S1 and S2 as strings holding indices/version numbers,
|
|
returning less than, equal to or greater than zero if S1 is less than,
|
|
equal to or greater than S2 (for more info, see the texinfo doc).
|
|
*/
|
|
|
|
int
|
|
__strverscmp (s1, s2)
|
|
const char *s1;
|
|
const char *s2;
|
|
{
|
|
const unsigned char *p1 = (const unsigned char *) s1;
|
|
const unsigned char *p2 = (const unsigned char *) s2;
|
|
unsigned char c1, c2;
|
|
int state;
|
|
int diff;
|
|
|
|
/* Symbol(s) 0 [1-9] others (padding)
|
|
Transition (10) 0 (01) d (00) x (11) - */
|
|
static const unsigned int next_state[] =
|
|
{
|
|
/* state x d 0 - */
|
|
/* S_N */ S_N, S_I, S_Z, S_N,
|
|
/* S_I */ S_N, S_I, S_I, S_I,
|
|
/* S_F */ S_N, S_F, S_F, S_F,
|
|
/* S_Z */ S_N, S_F, S_Z, S_Z
|
|
};
|
|
|
|
static const int result_type[] =
|
|
{
|
|
/* state x/x x/d x/0 x/- d/x d/d d/0 d/-
|
|
0/x 0/d 0/0 0/- -/x -/d -/0 -/- */
|
|
|
|
/* S_N */ CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP,
|
|
CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
|
|
/* S_I */ CMP, -1, -1, CMP, +1, LEN, LEN, CMP,
|
|
+1, LEN, LEN, CMP, CMP, CMP, CMP, CMP,
|
|
/* S_F */ CMP, CMP, CMP, CMP, CMP, LEN, CMP, CMP,
|
|
CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
|
|
/* S_Z */ CMP, +1, +1, CMP, -1, CMP, CMP, CMP,
|
|
-1, CMP, CMP, CMP
|
|
};
|
|
|
|
if (p1 == p2)
|
|
return 0;
|
|
|
|
c1 = *p1++;
|
|
c2 = *p2++;
|
|
/* Hint: '0' is a digit too. */
|
|
state = S_N | ((c1 == '0') + (isdigit (c1) != 0));
|
|
|
|
while ((diff = c1 - c2) == 0 && c1 != '\0')
|
|
{
|
|
state = next_state[state];
|
|
c1 = *p1++;
|
|
c2 = *p2++;
|
|
state |= (c1 == '0') + (isdigit (c1) != 0);
|
|
}
|
|
|
|
state = result_type[state << 2 | (((c2 == '0') + (isdigit (c2) != 0)))];
|
|
|
|
switch (state)
|
|
{
|
|
case CMP:
|
|
return diff;
|
|
|
|
case LEN:
|
|
while (isdigit (*p1++))
|
|
if (!isdigit (*p2++))
|
|
return 1;
|
|
|
|
return isdigit (*p2) ? -1 : diff;
|
|
|
|
default:
|
|
return state;
|
|
}
|
|
}
|
|
weak_alias (__strverscmp, strverscmp)
|