Changeset 3613 in kBuild for trunk/src/sed/lib/strverscmp.c

Timestamp:

Sep 19, 2024 12:34:43 AM (7 months ago)

Author:

bird

Message:

src/sed: Merged in changes between 4.1.5 and 4.9 from the vendor branch. (svn merge ^{/vendor/sed/4.1.5} /vendor/sed/current .)

Location:

trunk/src/sed

Files:

• . (modified) (1 prop)
• lib/strverscmp.c (modified) (4 diffs)

trunk/src/sed/lib/strverscmp.c

@@ -1 +1 @@
 /* Compare strings while treating digits characters numerically.
-   Copyright (C) 1997, 2000, 2002 Free Software Foundation, Inc.
+   Copyright (C) 1997-2022 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Jean-François Bignolles <[email protected]>, 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.
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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.
+   Lesser 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., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
 
-#if HAVE_CONFIG_H
-# include <config.h>
+#ifndef _LIBC
+# include <libc-config.h>
+# define __strverscmp strverscmp
 #endif
 
+#include <stdint.h>
 #include <string.h>
 #include <ctype.h>
@@ -28 +29 @@
 /* states: S_N: normal, S_I: comparing integral part, S_F: comparing
            fractional 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
+#define  S_N    0x0
+#define  S_I    0x3
+#define  S_F    0x6
+#define  S_Z    0x9
 
 /* result_type: CMP: return diff; LEN: compare using len_diff/diff */
-#define CMP    2
-#define LEN    3
+#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.
-   - It's typically faster.
-   POSIX says that only '0' through '9' are digits.  Prefer ISDIGIT to
-   ISDIGIT_LOCALE 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)
-
-#undef __strverscmp
-#undef strverscmp
-
-#ifndef weak_alias
-# define __strverscmp strverscmp
-#endif
 
 /* Compare S1 and S2 as strings holding indices/version numbers,
@@ -64 +49 @@
   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[] =
+  /* Symbol(s)    0       [1-9]   others
+     Transition   (10) 0  (01) d  (00) x   */
+  static const uint_least8_t 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
+      /* state    x    d    0  */
+      /* S_N */  S_N, S_I, S_Z,
+      /* S_I */  S_N, S_I, S_I,
+      /* S_F */  S_N, S_F, S_F,
+      /* S_Z */  S_N, S_F, S_Z
   };
 
-  static const int result_type[] =
+  static const int_least8_t 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  -/- */
+      /* state   x/x  x/d  x/0  d/x  d/d  d/0  0/x  0/d  0/0  */
 
-      /* 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
+      /* S_N */  CMP, CMP, CMP, CMP, LEN, CMP, CMP, CMP, CMP,
+      /* S_I */  CMP, -1,  -1,  +1,  LEN, LEN, +1,  LEN, LEN,
+      /* S_F */  CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP, CMP,
+      /* S_Z */  CMP, +1,  +1,  -1,  CMP, CMP, -1,  CMP, CMP
   };
 
@@ -97 +74 @@
     return 0;
 
-  c1 = *p1++;
-  c2 = *p2++;
+  unsigned char c1 = *p1++;
+  unsigned char c2 = *p2++;
   /* Hint: '0' is a digit too.  */
-  state = S_N | ((c1 == '0') + (ISDIGIT (c1) != 0));
+  int state = S_N + ((c1 == '0') + (isdigit (c1) != 0));
 
-  while ((diff = c1 - c2) == 0 && c1 != '\0')
+  int diff;
+  while ((diff = c1 - c2) == 0)
     {
+      if (c1 == '\0')
+        return diff;
+
       state = next_state[state];
       c1 = *p1++;
       c2 = *p2++;
-      state |= (c1 == '0') + (ISDIGIT (c1) != 0);
+      state += (c1 == '0') + (isdigit (c1) != 0);
     }
 
-  state = result_type[state << 2 | ((c2 == '0') + (ISDIGIT (c2) != 0))];
+  state = result_type[state * 3 + (((c2 == '0') + (isdigit (c2) != 0)))];
 
   switch (state)
-    {
+  {
     case CMP:
       return diff;
 
     case LEN:
-      while (ISDIGIT (*p1++))
-        if (!ISDIGIT (*p2++))
+      while (isdigit (*p1++))
+        if (!isdigit (*p2++))
           return 1;
 
-      return ISDIGIT (*p2) ? -1 : diff;
+      return isdigit (*p2) ? -1 : diff;
 
     default:
       return state;
-    }
+  }
 }
-#ifdef weak_alias
+libc_hidden_def (__strverscmp)
 weak_alias (__strverscmp, strverscmp)
-#endif