-/*
- * Copyright (C) 1994-2000, Index Data
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: delete.c,v $
- * Revision 1.7 2000-12-05 09:59:10 adam
- * Work on dict_delete_subtree.
- *
- * Revision 1.6 1999/05/15 14:36:37 adam
- * Updated dictionary. Implemented "compression" of dictionary.
- *
- * Revision 1.5 1999/02/02 14:50:17 adam
- * Updated WIN32 code specific sections. Changed header.
- *
- * Revision 1.4 1996/02/02 13:43:50 adam
- * The public functions simply use char instead of Dict_char to represent
- * search strings. Dict_char is used internally only.
- *
- * Revision 1.3 1995/12/07 11:48:55 adam
- * Insert operation obeys DICT_type = 1 (slack in page).
- * Function dict_open exists if page size or magic aren't right.
- *
- * Revision 1.2 1995/12/06 17:48:30 adam
- * Bug fix: delete didn't work.
- *
- * Revision 1.1 1995/12/06 14:52:21 adam
- * New function: dict_delete.
- *
- */
+/* This file is part of the Zebra server.
+ Copyright (C) 1994-2009 Index Data
+
+Zebra 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.
+
+Zebra 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 General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
-#include <dict.h>
+#include "dict-p.h"
-static void dict_del_subtree (Dict dict, Dict_ptr ptr,
- void *client,
- int (*f)(const char *, void *))
+static void dict_del_subtree(Dict dict, Dict_ptr ptr,
+ void *client,
+ int (*f)(const char *, void *))
{
- int more = 1;
void *p = 0;
+ short *indxp;
+ int i, hi;
if (!ptr)
return;
-
- while (more)
- {
- short *indxp;
- int i, hi;
- dict_bf_readp (dict->dbf, ptr, &p);
- hi = DICT_nodir(p)-1;
- indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short));
- more = 0;
- for (i = 0; i <= hi; i++)
+ dict_bf_readp(dict->dbf, ptr, &p);
+ indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short));
+ hi = DICT_nodir(p)-1;
+ for (i = 0; i <= hi; i++)
+ {
+ if (indxp[-i] > 0)
+ {
+ /* string (Dict_char *) DICT_EOS terminated */
+ /* unsigned char length of information */
+ /* char * information */
+ char *info = (char*)p + indxp[-i];
+ if (f)
+ (*f)(info + (dict_strlen((Dict_char*) info)+1)
+ *sizeof(Dict_char), client);
+ }
+ else
{
- if (indxp[-i] > 0)
+ Dict_ptr subptr;
+
+ /* Dict_ptr subptr */
+ /* Dict_char sub char */
+ /* unsigned char length of information */
+ /* char * information */
+ char *info = (char*)p - indxp[-i];
+ memcpy(&subptr, info, sizeof(Dict_ptr));
+
+ if (info[sizeof(Dict_ptr)+sizeof(Dict_char)])
{
- /* string (Dict_char *) DICT_EOS terminated */
- /* unsigned char length of information */
- /* char * information */
- char *info = (char*)p + indxp[-i];
if (f)
- (*f)(info + (dict_strlen((Dict_char*) info)+1)
- *sizeof(Dict_char), client);
+ (*f)(info+sizeof(Dict_ptr)+sizeof(Dict_char), client);
}
- else
+ if (subptr)
{
-
- Dict_ptr subptr;
-
- /* Dict_ptr subptr */
- /* Dict_char sub char */
- /* unsigned char length of information */
- /* char * information */
- char *info = (char*)p - indxp[-i];
- memcpy (&subptr, info, sizeof(Dict_ptr));
-
- if (info[sizeof(Dict_ptr)+sizeof(Dict_char)])
- {
- if (f)
- (*f)(info+sizeof(Dict_ptr)+sizeof(Dict_char), client);
- }
- if (subptr)
- {
- dict_del_subtree (dict, subptr, client, f);
- more = 1;
- break;
- }
+ dict_del_subtree(dict, subptr, client, f);
+
+ /* page may be gone. reread it .. */
+ dict_bf_readp(dict->dbf, ptr, &p);
+ indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short));
}
}
}
DICT_backptr(p) = dict->head.freelist;
dict->head.freelist = ptr;
- dict_bf_touch (dict->dbf, ptr);
+ dict_bf_touch(dict->dbf, ptr);
}
-static int dict_del_string (Dict dict, const Dict_char *str, Dict_ptr ptr,
- int sub_flag, void *client,
- int (*f)(const char *, void *))
+static int dict_del_string(Dict dict, const Dict_char *str, Dict_ptr ptr,
+ int sub_flag, void *client,
+ int (*f)(const char *, void *))
{
int mid, lo, hi;
int cmp;
if (!ptr)
return 0;
- dict_bf_readp (dict->dbf, ptr, &p);
+ dict_bf_readp(dict->dbf, ptr, &p);
mid = lo = 0;
hi = DICT_nodir(p)-1;
indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short));
if (sub_flag)
{
/* determine if prefix match */
- if (!dict_strncmp (str, (Dict_char*) info, dict_strlen(str)))
+ if (!dict_strncmp(str, (Dict_char*) info, dict_strlen(str)))
{
if (f)
(*f)(info + (dict_strlen((Dict_char*) info)+1)
}
DICT_type(p) = 1;
(DICT_nodir(p))--;
- dict_bf_touch (dict->dbf, ptr);
+ dict_bf_touch(dict->dbf, ptr);
--hi;
mid = lo = 0;
/* start again (may not be the most efficient way to go)*/
}
DICT_type(p) = 1;
(DICT_nodir(p))--;
- dict_bf_touch (dict->dbf, ptr);
+ dict_bf_touch(dict->dbf, ptr);
return 1;
}
}
/* unsigned char length of information */
/* char * information */
info = (char*)p - indxp[-mid];
- memcpy (&dc, info+sizeof(Dict_ptr), sizeof(Dict_char));
+ memcpy(&dc, info+sizeof(Dict_ptr), sizeof(Dict_char));
cmp = dc- *str;
if (!cmp)
{
- memcpy (&subptr, info, sizeof(Dict_ptr));
+ memcpy(&subptr, info, sizeof(Dict_ptr));
if (*++str == DICT_EOS)
{
if (sub_flag && subptr)
{
Dict null_ptr = 0;
- memcpy (info, &null_ptr, sizeof(Dict_ptr));
+ memcpy(info, &null_ptr, sizeof(Dict_ptr));
}
if (info[sizeof(Dict_ptr)+sizeof(Dict_char)])
{
info[sizeof(Dict_ptr)+sizeof(Dict_char)] = 0;
DICT_type(p) = 1;
- dict_bf_touch (dict->dbf, ptr);
+ dict_bf_touch(dict->dbf, ptr);
if (f)
(*f)(info+sizeof(Dict_ptr)+sizeof(Dict_char),
client);
if (sub_flag && subptr)
- dict_del_subtree (dict, subptr, client, f);
+ dict_del_subtree(dict, subptr, client, f);
return 1;
}
if (sub_flag && subptr)
{
DICT_type(p) = 1;
- dict_bf_touch (dict->dbf, ptr);
- dict_del_subtree (dict, subptr, client, f);
+ dict_bf_touch(dict->dbf, ptr);
+ dict_del_subtree(dict, subptr, client, f);
}
return 0;
}
if (subptr == 0)
return 0;
ptr = subptr;
- dict_bf_readp (dict->dbf, ptr, &p);
+ dict_bf_readp(dict->dbf, ptr, &p);
mid = lo = 0;
hi = DICT_nodir(p)-1;
indxp = (short*) ((char*) p+DICT_bsize(p)-sizeof(short));
return 0;
}
-int dict_delete (Dict dict, const char *p)
+int dict_delete(Dict dict, const char *p)
{
- return dict_del_string (dict, (const Dict_char*) p, dict->head.root, 0,
- 0, 0);
+ return dict_del_string(dict, (const Dict_char*) p, dict->head.root, 0,
+ 0, 0);
}
-int dict_delete_subtree (Dict dict, const char *p, void *client,
- int (*f)(const char *info, void *client))
+int dict_delete_subtree(Dict dict, const char *p, void *client,
+ int (*f)(const char *info, void *client))
{
- return dict_del_string (dict, (const Dict_char*) p, dict->head.root, 1,
- client, f);
+ return dict_del_string(dict, (const Dict_char*) p, dict->head.root, 1,
+ client, f);
}
+/*
+ * Local variables:
+ * c-basic-offset: 4
+ * c-file-style: "Stroustrup"
+ * indent-tabs-mode: nil
+ * End:
+ * vim: shiftwidth=4 tabstop=8 expandtab
+ */
+
projects / idzebra-moved-to-github.git / blobdiff