blob: 7e1669f7258a3c294c440faa28f2e5dc98b2e68b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
//
// WordSearcher.cc
//
// WordSearcher: a simple word database readonly-access wrapper
// generates ResultLists for the Query framework.
//
// Part of the ht://Dig package <http://www.htdig.org/>
// Copyright (c) 1995-2004 The ht://Dig Group
// For copyright details, see the file COPYING in your distribution
// or the GNU Library General Public License (LGPL) version 2 or later
// <http://www.gnu.org/copyleft/lgpl.html>
//
// $Id: WordSearcher.cc,v 1.4 2004/05/28 13:15:24 lha Exp $
//
#include "WordSearcher.h"
#include "WordType.h"
#include "ResultList.h"
#include "HtWordReference.h"
#include "defaults.h"
extern int debug;
//
// constructor, opens the database
//
WordSearcher::WordSearcher(const String &filename) :
references(*(HtConfiguration::config()))
{
references.Open(filename, O_RDONLY);
}
//
// gather results for a word, either from db or ignored
//
ResultList *
WordSearcher::Search(const String &word)
{
ResultList *result = 0;
if(IsIgnore(word))
{
if(debug) cerr << "IGNORE: " << word << endl;
result = new ResultList;
result->Ignore();
}
else
{
result = Fetch(word);
}
return result;
}
//
// see if word must be ignored
//
bool
WordSearcher::IsIgnore(const String &word)
{
HtConfiguration* config= HtConfiguration::config();
String copy = word;
WordType type(*config);
return 0 != type.Normalize(copy);
}
//
// gather all references in the db, construct a ResultList
//
ResultList *
WordSearcher::Fetch(const String &word)
{
if(debug) cerr << "FETCH: " << word << endl;
ResultList *result = 0;
List *refs = references[word];
if(refs && refs->Count())
{
if(debug) cerr << "REFERENCES: " << refs->Count() << endl;
result = new ResultList;
DocMatch *match = new DocMatch;
refs->Start_Get();
HtWordReference *ref = (HtWordReference *)refs->Get_Next();
match->SetId(ref->DocID());
match->SetAnchor(ref->Anchor());
result->add(match);
unsigned int current = ref->DocID();
if(debug) cerr << "At: " << ref->DocID() << endl;
while(ref)
{
if(ref->DocID() != current)
{
if(debug) cerr << "At: "<<ref->DocID()<< endl;
match = new DocMatch;
match->SetId(ref->DocID());
match->SetAnchor(ref->Anchor());
result->add(match);
current = ref->DocID();
}
if(debug) cerr << "@ "<<ref->Location()<< endl;
match->AddLocation(
new Location(
ref->Location(),
ref->Location(),
ref->Flags()));
ref = (HtWordReference *)refs->Get_Next();
}
}
return result;
}
|
