New upstream version 1.2upstream/1.2

1 files changed, 0 insertions, 161 deletions

diff --git a/lib/str-kmp.h b/lib/str-kmp.h
deleted file mode 100644
index 959ff65a..00000000
--- a/lib/str-kmp.h
+++ /dev/null
@@ -1,161 +0,0 @@
-/* Substring search in a NUL terminated string of UNIT elements,
-   using the Knuth-Morris-Pratt algorithm.
-   Copyright (C) 2005-2022 Free Software Foundation, Inc.
-   Written by Bruno Haible <bruno@clisp.org>, 2005.
-
-   This file is free software.
-   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
-   You can redistribute it and/or modify it under either
-     - the terms of the GNU Lesser General Public License as published
-       by the Free Software Foundation, either version 3, or (at your
-       option) any later version, or
-     - 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, or
-     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
-
-   This file 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
-   Lesser General Public License and the GNU General Public License
-   for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License and of the GNU General Public License along with this
-   program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-/* Before including this file, you need to define:
-     UNIT                    The element type of the needle and haystack.
-     CANON_ELEMENT(c)        A macro that canonicalizes an element right after
-                             it has been fetched from needle or haystack.
-                             The argument is of type UNIT; the result must be
-                             of type UNIT as well.  */
-
-/* Knuth-Morris-Pratt algorithm.
-   See https://en.wikipedia.org/wiki/Knuth-Morris-Pratt_algorithm
-   HAYSTACK is the NUL terminated string in which to search for.
-   NEEDLE is the string to search for in HAYSTACK, consisting of NEEDLE_LEN
-   units.
-   Return a boolean indicating success:
-   Return true and set *RESULTP if the search was completed.
-   Return false if it was aborted because not enough memory was available.  */
-static bool
-knuth_morris_pratt (const UNIT *haystack,
-                    const UNIT *needle, size_t needle_len,
-                    const UNIT **resultp)
-{
-  size_t m = needle_len;
-
-  /* Allocate the table.  */
-  size_t *table = (size_t *) nmalloca (m, sizeof (size_t));
-  if (table == NULL)
-    return false;
-  /* Fill the table.
-     For 0 < i < m:
-       0 < table[i] <= i is defined such that
-       forall 0 < x < table[i]: needle[x..i-1] != needle[0..i-1-x],
-       and table[i] is as large as possible with this property.
-     This implies:
-     1) For 0 < i < m:
-          If table[i] < i,
-          needle[table[i]..i-1] = needle[0..i-1-table[i]].
-     2) For 0 < i < m:
-          rhaystack[0..i-1] == needle[0..i-1]
-          and exists h, i <= h < m: rhaystack[h] != needle[h]
-          implies
-          forall 0 <= x < table[i]: rhaystack[x..x+m-1] != needle[0..m-1].
-     table[0] remains uninitialized.  */
-  {
-    size_t i, j;
-
-    /* i = 1: Nothing to verify for x = 0.  */
-    table[1] = 1;
-    j = 0;
-
-    for (i = 2; i < m; i++)
-      {
-        /* Here: j = i-1 - table[i-1].
-           The inequality needle[x..i-1] != needle[0..i-1-x] is known to hold
-           for x < table[i-1], by induction.
-           Furthermore, if j>0: needle[i-1-j..i-2] = needle[0..j-1].  */
-        UNIT b = CANON_ELEMENT (needle[i - 1]);
-
-        for (;;)
-          {
-            /* Invariants: The inequality needle[x..i-1] != needle[0..i-1-x]
-               is known to hold for x < i-1-j.
-               Furthermore, if j>0: needle[i-1-j..i-2] = needle[0..j-1].  */
-            if (b == CANON_ELEMENT (needle[j]))
-              {
-                /* Set table[i] := i-1-j.  */
-                table[i] = i - ++j;
-                break;
-              }
-            /* The inequality needle[x..i-1] != needle[0..i-1-x] also holds
-               for x = i-1-j, because
-                 needle[i-1] != needle[j] = needle[i-1-x].  */
-            if (j == 0)
-              {
-                /* The inequality holds for all possible x.  */
-                table[i] = i;
-                break;
-              }
-            /* The inequality needle[x..i-1] != needle[0..i-1-x] also holds
-               for i-1-j < x < i-1-j+table[j], because for these x:
-                 needle[x..i-2]
-                 = needle[x-(i-1-j)..j-1]
-                 != needle[0..j-1-(x-(i-1-j))]  (by definition of table[j])
-                    = needle[0..i-2-x],
-               hence needle[x..i-1] != needle[0..i-1-x].
-               Furthermore
-                 needle[i-1-j+table[j]..i-2]
-                 = needle[table[j]..j-1]
-                 = needle[0..j-1-table[j]]  (by definition of table[j]).  */
-            j = j - table[j];
-          }
-        /* Here: j = i - table[i].  */
-      }
-  }
-
-  /* Search, using the table to accelerate the processing.  */
-  {
-    size_t j;
-    const UNIT *rhaystack;
-    const UNIT *phaystack;
-
-    *resultp = NULL;
-    j = 0;
-    rhaystack = haystack;
-    phaystack = haystack;
-    /* Invariant: phaystack = rhaystack + j.  */
-    while (*phaystack != 0)
-      if (CANON_ELEMENT (needle[j]) == CANON_ELEMENT (*phaystack))
-        {
-          j++;
-          phaystack++;
-          if (j == m)
-            {
-              /* The entire needle has been found.  */
-              *resultp = rhaystack;
-              break;
-            }
-        }
-      else if (j > 0)
-        {
-          /* Found a match of needle[0..j-1], mismatch at needle[j].  */
-          rhaystack += table[j];
-          j -= table[j];
-        }
-      else
-        {
-          /* Found a mismatch at needle[0] already.  */
-          rhaystack++;
-          phaystack++;
-        }
-  }
-
-  freea (table);
-  return true;
-}
-
-#undef CANON_ELEMENT