Got rid of old functionalities (strnatcmp, BM).

1 files changed, 0 insertions, 44 deletions

diff --git a/src/bm.c b/src/bm.c
deleted file mode 100644
index d2afb0a..0000000
--- a/src/bm.c
+++ /dev/null
@@ -1,44 +0,0 @@
-#include "db.h"
-
-/*
-	Implementation of the tuned Boyer-Moore string search algorithm,
-	as defined here:
-		http://www-igm.univ-mlv.fr/~lecroq/string/tunedbm.html#SECTION00195
-	and here:
-		http://www-igm.univ-mlv.fr/~lecroq/string/node14.html#SECTION00140
-*/
-
-#define ASIZE 128 // alphabet size, need to include most ascii characters
-
-static void preBmBc(char *x, int m, int bmBc[]){
-	for(int i = 0; i < ASIZE; ++i)
-		bmBc[i] = m;
-	for(int i = 0; i < m - 1; ++i)
-		bmBc[x[i]] = m - i - 1;
-}
-
-// x is the needle, y is the haystack
-// Should be called TUNEDBM, called BM for simplicity
-ssize_t BM(char *x, int m, char *y, int n){
-	int j, k, shift, bmBc[ASIZE];
-
-	/* Preprocessing */
-	preBmBc(x, m, bmBc);
-	shift = bmBc[x[m-1]];
-	bmBc[x[m-1]] = 0;
-
-	/* Searching */
-	j = 0;
-	while(j < n){
-		k = bmBc[y[j + m -1]];
-		while(k != 0){
-			j += k; k = bmBc[y[j + m - 1]];
-			j += k; k = bmBc[y[j + m - 1]];
-			j += k; k = bmBc[y[j + m - 1]];
-		}
-		if(memcmp(x, y + j, m) == 0 && j < n)
-			return j;
-		j += shift;                          /* shift */
-	}
-	return -1;
-}