/*
- * Copyright (C) 1994, Index Data I/S
+ * Copyright (C) 1994-1996, Index Data I/S
* All rights reserved.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: lookgrep.c,v $
- * Revision 1.9 1995-10-27 13:58:09 adam
+ * Revision 1.19 1997-09-18 08:59:18 adam
+ * Extra generic handle for the character mapping routines.
+ *
+ * Revision 1.18 1997/09/05 15:29:58 adam
+ * Changed prototype for chr_map_input - added const.
+ * Added support for C++, headers uses extern "C" for public definitions.
+ *
+ * Revision 1.17 1996/06/04 10:20:06 adam
+ * Added support for character mapping.
+ *
+ * Revision 1.16 1996/05/24 14:46:04 adam
+ * Added dict_grep_cmap function to define user-mapping in grep lookups.
+ *
+ * Revision 1.15 1996/03/20 09:35:18 adam
+ * Function dict_lookup_grep got extra parameter, init_pos, which marks
+ * from which position in pattern approximate pattern matching should occur.
+ *
+ * Revision 1.14 1996/02/02 13:43:51 adam
+ * The public functions simply use char instead of Dict_char to represent
+ * search strings. Dict_char is used internally only.
+ *
+ * Revision 1.13 1996/01/08 09:09:30 adam
+ * Function dfa_parse got 'const' string argument.
+ *
+ * Revision 1.12 1995/12/11 09:04:48 adam
+ * Bug fix: the lookup/scan/lookgrep didn't handle empty dictionary.
+ *
+ * Revision 1.11 1995/12/06 14:43:02 adam
+ * New function: dict_delete.
+ *
+ * Revision 1.10 1995/11/16 17:00:44 adam
+ * Changed stupid log.
+ *
+ * Revision 1.9 1995/10/27 13:58:09 adam
* Makes 'Database unavailable' diagnostic.
*
* Revision 1.8 1995/10/19 14:57:21 adam
}
static INLINE int move (MatchContext *mc, MatchWord *Rj1, MatchWord *Rj,
- Dict_char ch, struct DFA *dfa, MatchWord *Rtmp)
+ Dict_char ch, struct DFA *dfa, MatchWord *Rtmp,
+ int range)
{
int d;
MatchWord *Rtmp_2 = Rtmp + mc->n;
static int dict_grep (Dict dict, Dict_ptr ptr, MatchContext *mc,
MatchWord *Rj, int pos, void *client,
- int (*userfunc)(Dict_char *, const char *, void *),
+ int (*userfunc)(char *, const char *, void *),
Dict_char *prefix, struct DFA *dfa,
- int *max_pos)
+ int *max_pos, int init_pos)
{
int lo, hi, d;
void *p;
MatchWord *Rj0 = Rj + j *mc->fact;
MatchWord *Rj1 = Rj + (j+1)*mc->fact;
MatchWord *Rj_tmp = Rj + (j+2)*mc->fact;
+ int range;
memcpy (&ch, info+j*sizeof(Dict_char), sizeof(Dict_char));
prefix[pos+j] = ch;
if (ch == DICT_EOS)
{
if (was_match)
- if ((*userfunc)(prefix, info+(j+1)*sizeof(Dict_char),
- client))
+ if ((*userfunc)((char*) prefix,
+ info+(j+1)*sizeof(Dict_char), client))
return 1;
break;
}
- move (mc, Rj1, Rj0, ch, dfa, Rj_tmp);
+ if (pos+j >= init_pos)
+ range = mc->range;
+ else
+ range = 0;
+ move (mc, Rj1, Rj0, ch, dfa, Rj_tmp, range);
for (d = mc->n; --d >= 0; )
- if (Rj1[mc->range*mc->n + d])
+ if (Rj1[range*mc->n + d])
break;
if (d < 0)
break;
was_match = 0;
for (d = mc->n; --d >= 0; )
- if (Rj1[mc->range*mc->n + d] & mc->match_mask[d])
+ if (Rj1[range*mc->n + d] & mc->match_mask[d])
{
was_match = 1;
break;
MatchWord *Rj1 = Rj+ mc->fact;
MatchWord *Rj_tmp = Rj+2*mc->fact;
Dict_char ch;
+ int range;
/* Dict_ptr subptr */
/* Dict_char sub char */
if (pos > *max_pos)
*max_pos = pos;
- move (mc, Rj1, Rj, ch, dfa, Rj_tmp);
+ if (pos >= init_pos)
+ range = mc->range;
+ else
+ range = 0;
+ move (mc, Rj1, Rj, ch, dfa, Rj_tmp, range);
for (d = mc->n; --d >= 0; )
- if (Rj1[mc->range*mc->n + d])
+ if (Rj1[range*mc->n + d])
break;
if (d >= 0)
{
if (info[sizeof(Dict_ptr)+sizeof(Dict_char)])
{
for (d = mc->n; --d >= 0; )
- if (Rj1[mc->range*mc->n + d] & mc->match_mask[d])
+ if (Rj1[range*mc->n + d] & mc->match_mask[d])
{
prefix[pos+1] = DICT_EOS;
- if ((*userfunc)(prefix, info+sizeof(Dict_ptr)+
+ if ((*userfunc)((char*) prefix,
+ info+sizeof(Dict_ptr)+
sizeof(Dict_char), client))
return 1;
break;
if (subptr)
{
if (dict_grep (dict, subptr, mc, Rj1, pos+1,
- client, userfunc, prefix, dfa, max_pos))
+ client, userfunc, prefix, dfa, max_pos,
+ init_pos))
return 1;
dict_bf_readp (dict->dbf, ptr, &p);
indxp = (short*) ((char*) p+DICT_pagesize(dict)
return 0;
}
-int dict_lookup_grep (Dict dict, Dict_char *pattern, int range, void *client,
- int *max_pos,
- int (*userfunc)(Dict_char *name, const char *info,
+int dict_lookup_grep (Dict dict, const char *pattern, int range, void *client,
+ int *max_pos, int init_pos,
+ int (*userfunc)(char *name, const char *info,
void *client))
{
MatchWord *Rj;
Dict_char prefix[MAX_LENGTH+1];
- char *this_pattern = pattern;
+ const char *this_pattern = pattern;
MatchContext *mc;
struct DFA *dfa = dfa_init();
int i, d;
+ logf (LOG_DEBUG, "dict_lookup_grep '%s' range=%d", pattern, range);
+
+ dfa_set_cmap (dfa, dict->grep_cmap_data, dict->grep_cmap);
+
i = dfa_parse (dfa, &this_pattern);
if (i || *this_pattern)
{
}
}
*max_pos = 0;
- i = dict_grep (dict, 1, mc, Rj, 0, client, userfunc, prefix, dfa,
- max_pos);
- logf (LOG_DEBUG, "max_pos = %d", max_pos);
+ if (dict->head.last > 1)
+ i = dict_grep (dict, 1, mc, Rj, 0, client, userfunc, prefix,
+ dfa, max_pos, init_pos);
+ else
+ i = 0;
+ logf (LOG_DEBUG, "max_pos = %d", *max_pos);
dfa_delete (&dfa);
xfree (Rj);
rm_MatchContext (&mc);
return i;
}
+
+void dict_grep_cmap (Dict dict, void *vp,
+ const char **(*cmap)(void *vp, const char **from, int len))
+{
+ dict->grep_cmap = cmap;
+ dict->grep_cmap_data = vp;
+}
projects / idzebra-moved-to-github.git / blobdiff