mdoc_tokhash -> hash

Initial man hashtab (BROKEN).

1 files changed, 46 insertions, 9 deletions

diff --git a/man_hash.c b/man_hash.c
index 039ead53..9aaafb20 100644
--- a/man_hash.c
+++ b/man_hash.c
@@ -1,4 +1,4 @@
-/* $Id: man_hash.c,v 1.4 2009/03/31 13:50:19 kristaps Exp $ */
+/* $Id: man_hash.c,v 1.5 2009/04/02 06:51:44 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@openbsd.org>
  *
@@ -16,17 +16,19 @@
  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  * PERFORMANCE OF THIS SOFTWARE.
  */
+#include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "libman.h"
 
+
 /* ARGUSED */
 void
 man_hash_free(void *htab)
 {
 
-	/* Do nothing. */
+	free(htab);
 }
 
 
@@ -34,22 +36,57 @@ man_hash_free(void *htab)
 void *
 man_hash_alloc(void)
 {
+	int		*htab;
+	int		 i, j, x;
+
+	htab = calloc(26 * 4, sizeof(int));
+	if (NULL == htab)
+		return(NULL);
+
+	for (i = 1; i < MAN_MAX; i++) {
+		x = man_macronames[i][0];
+
+		assert((x >= 65 && x <= 90) ||
+				(x >= 97 && x <= 122));
+
+		x -= (x <= 90) ? 65 : 97;
+		x *= 4;
 
-	/* Do nothing. */
-	return(NULL);
+		for (j = 0; j < 4; j++)
+			if (0 == htab[x + j]) {
+				htab[x + j] = i;
+				break;
+			}
+
+		assert(j < 4);
+	}
+
+	return((void *)htab);
 }
 
 
 int
 man_hash_find(const void *arg, const char *tmp)
 {
-	int		 i;
+	int		 x, i, tok;
+	const int	*htab;
+
+	htab = (const int *)arg;
+
+	if (0 == (x = tmp[0]))
+		return(MAN_MAX);
+	if ( ! ((x >= 65 && x <= 90) || (x >= 97 && x <= 122)))
+		return(MAN_MAX);
 
-	/* TODO */
+	x -= (x <= 90) ? 65 : 97;
+	x *= 4;
 
-	for (i = 0; i < MAN_MAX; i++) 
-		if (0 == strcmp(tmp, man_macronames[i]))
-			return(i);
+	for (i = 0; i < 4; i++) {
+		if (0 == (tok = htab[x + i]))
+			return(MAN_MAX);
+		if (0 == strcmp(tmp, man_macronames[tok]))
+			return(tok);
+	}
 
 	return(MAN_MAX);
 }