maint: update copyright

[gnulib.git] / lib / strverscmp.c

diff --git a/lib/strverscmp.c b/lib/strverscmp.c
index 830a545..e9fba93 100644 (file)
--- a/lib/strverscmp.c
+++ b/lib/strverscmp.c
@@ -1,24 +1,23 @@
 /* Compare strings while treating digits characters numerically.
-   Copyright (C) 1997, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1997, 2000, 2002, 2004, 2006, 2009-2014 Free Software
+   Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Jean-François Bignolles <bignolle@ecoledoc.ibp.fr>, 1997.
+   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.
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
 
-   The GNU C Library is distributed in the hope that it will be useful,
+   This program 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.
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU 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.  */
+   You should have received a copy of the GNU General Public License along
+   with this program; if not, see <http://www.gnu.org/licenses/>.  */
 
-#if HAVE_CONFIG_H
+#if !_LIBC
 # include <config.h>
 #endif
 
@@ -26,7 +25,7 @@
 #include <ctype.h>
 
 /* states: S_N: normal, S_I: comparing integral part, S_F: comparing
-           Fractional parts, S_Z: idem but with leading Zeroes only */
+           fractional parts, S_Z: idem but with leading Zeroes only */
 #define S_N    0x0
 #define S_I    0x4
 #define S_F    0x8
@@ -36,15 +35,22 @@
 #define CMP    2
 #define LEN    3
 
+
 /* ISDIGIT differs from isdigit, as follows:
-   - Its arg may be any int or unsigned int; it need not be an unsigned char.
-   - It's guaranteed to evaluate its argument exactly once.
+   - Its arg may be any int or unsigned int; it need not be an unsigned char
+     or EOF.
    - It's typically faster.
-   Posix 1003.2-1992 section 2.5.2.1 page 50 lines 1556-1558 says that
-   only '0' through '9' are digits.  Prefer ISDIGIT to isdigit unless
-   it's important to use the locale's definition of `digit' even when the
-   host does not conform to Posix.  */
-#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
+   POSIX says that only '0' through '9' are digits.  Prefer ISDIGIT to
+   isdigit unless it's important to use the locale's definition
+   of "digit" even when the host does not conform to POSIX.  */
+#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
+
+#undef __strverscmp
+#undef strverscmp
+
+#ifndef weak_alias
+# define __strverscmp strverscmp
+#endif
 
 /* Compare S1 and S2 as strings holding indices/version numbers,
    returning less than, equal to or greater than zero if S1 is less than,
@@ -52,7 +58,7 @@
 */
 
 int
-strverscmp (const char *s1, const char *s2)
+__strverscmp (const char *s1, const char *s2)
 {
   const unsigned char *p1 = (const unsigned char *) s1;
   const unsigned char *p2 = (const unsigned char *) s2;
@@ -111,8 +117,8 @@ strverscmp (const char *s1, const char *s2)
 
     case LEN:
       while (ISDIGIT (*p1++))
-       if (!ISDIGIT (*p2++))
-         return 1;
+        if (!ISDIGIT (*p2++))
+          return 1;
 
       return ISDIGIT (*p2) ? -1 : diff;
 
@@ -120,3 +126,6 @@ strverscmp (const char *s1, const char *s2)
       return state;
     }
 }
+#ifdef weak_alias
+weak_alias (__strverscmp, strverscmp)
+#endif