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/*********
*
* This file is part of BibleTime's source code, http://www.bibletime.info/.
*
* Copyright 1999-2014 by the BibleTime developers.
* The BibleTime source code is licensed under the GNU General Public License version 2.0.
*
**********/
#include <QDebug>
#include "backend/cswordmodulesearch.h"
#include "backend/config/btconfig.h"
#include "backend/managers/cswordbackend.h"
#include "btglobal.h"
#include "util/tool.h"
void CSwordModuleSearch::startSearch() {
// Clear old search results:
m_results.clear();
m_foundItems = 0;
/// \todo What is the purpose of the following statement?
CSwordBackend::instance()->setFilterOptions(btConfig().getFilterOptions());
// Search module-by-module:
Q_FOREACH(const CSwordModuleInfo *m, m_searchModules) {
sword::ListKey results;
int found = m->searchIndexed(m_searchText, m_searchScope, results);
if (found > 0) {
m_results.insert(m, results);
m_foundItems += found;
}
}
}
void CSwordModuleSearch::setSearchScope(const sword::ListKey &scope) {
/// \todo Properly examine and document the inner workings of this method.
m_searchScope.copyFrom( scope );
if (!strlen(scope.getRangeText())) { //we can't search with an empty search scope, would crash
//reset the scope
resetSearchScope();
//disable searching with a scope!
// if (m_searchOptions | useScope) {
// qWarning("using the scope!");
//set back the scope flag
// }
}
}
QList<const CSwordModuleInfo*> CSwordModuleSearch::unindexedModules(
const QList<const CSwordModuleInfo*> &modules)
{
QList<const CSwordModuleInfo*> unindexed;
Q_FOREACH (const CSwordModuleInfo *m, modules) {
if (!m->hasIndex()) {
unindexed.append(m);
}
}
return unindexed;
}
QString CSwordModuleSearch::highlightSearchedText(const QString& content, const QString& searchedText) {
QString ret = content;
const Qt::CaseSensitivity cs = Qt::CaseInsensitive;
// int index = 0;
int index = ret.indexOf("<body", 0);
int matchLen = 0;
int length = searchedText.length();
// Highlighting constants -
// \todo We need to make the highlight color configurable.
const QString rep1("<span style=\"background-color:#FFFF66;\">");
const QString rep2("</span>");
const unsigned int repLength = rep1.length() + rep1.length();
const QString rep3("style=\"background-color:#FFFF66;\" ");
const unsigned int rep3Length = rep3.length();
QString newSearchText;
newSearchText = searchedText;
// find the strongs search lemma and highlight it
// search the searched text for "strong:" until it is not found anymore
QStringList list;
// split the search string - some possibilities are "\\s|\\|", "\\s|\\+", or "\\s|\\|\\+"
// \todo find all possible seperators
QString regExp = "\\s";
list = searchedText.split(QRegExp(regExp));
foreach (QString newSearchText, list) {
int sstIndex; // strong search text index for finding "strong:"
int idx1, idx2;
QString sNumber, lemmaText;
sstIndex = newSearchText.indexOf("strong:");
if (sstIndex == -1)
continue;
// set the start index to the start of <body>
int strongIndex = index;
// Get the strongs number from the search text.
// First, find the first space after "strong:"
sstIndex = sstIndex + 7;
// get the strongs number -> the text following "strong:" to the end of the string.
sNumber = newSearchText.mid(sstIndex, -1);
// find all the "lemma=" inside the the content
while ((strongIndex = ret.indexOf("lemma=", strongIndex, cs)) != -1) {
// get the strongs number after the lemma and compare it with the
// strongs number we are looking for
idx1 = ret.indexOf("\"", strongIndex) + 1;
idx2 = ret.indexOf("\"", idx1 + 1);
lemmaText = ret.mid(idx1, idx2 - idx1);
// this is interesting because we could have a strongs number like: G3218|G300
// To handle this we will use some extra cpu cycles and do a partial match against
// the lemmaText
if (lemmaText.contains(sNumber)) {
// strongs number is found now we need to highlight it
// I believe the easiest way is to insert rep3 just before "lemma="
ret = ret.insert(strongIndex, rep3);
strongIndex += rep3Length;
}
strongIndex += 6; // 6 is the length of "lemma="
}
}
//---------------------------------------------------------------------
// now that the strong: stuff is out of the way continue with
// other search options
//---------------------------------------------------------------------
// try to figure out how to use the lucene query parser
//using namespace lucene::queryParser;
//using namespace lucene::search;
//using namespace lucene::analysis;
//using namespace lucene::util;
//wchar_t *buf;
//char buf8[1000];
//standard::WhitespaceAnalyzer analyzer;
//lucene_utf8towcs(m_wcharBuffer, searchedText.utf8(), MAX_CONV_SIZE);
//QSharedPointer<Query> q( QueryParser::parse(m_wcharBuffer, _T("content"), &analyzer) );
//StringReader reader(m_wcharBuffer);
//TokenStream* tokenStream = analyzer.tokenStream( _T("field"), &reader);
//Token token;
//while(tokenStream->next(&token) != 0) {
// lucene_wcstoutf8(buf8, token.termText(), 1000);
// printf("%s\n", buf8);
//}
//===========================================================
// since I could not figure out the lucene query parser, I
// made a simple parser.
//===========================================================
QStringList words = queryParser(newSearchText);
qDebug() << "btsearchresultarea.cpp: " << __LINE__ << ": " << words << '\n';
foreach (QString word, words) { //search for every word in the list
QRegExp findExp;
if (word.contains("*")) {
length = word.length() - 1;
word.replace('*', "\\S*"); //match within a word
findExp = QRegExp(word);
findExp.setMinimal(true);
}
else if (word.contains("?")) {
length = word.length() - 1;
word.replace('?', "\\S?"); //match within a word
findExp = QRegExp(word);
findExp.setMinimal(true);
}
else {
length = word.length();
findExp = QRegExp("\\b" + word + "\\b");
}
// index = 0; //for every word start at the beginning
index = ret.indexOf("<body", 0);
findExp.setCaseSensitivity(cs);
//while ( (index = ret.find(findExp, index)) != -1 ) { //while we found the word
while ( (index = findExp.indexIn(ret, index)) != -1 ) { //while we found the word
matchLen = findExp.matchedLength();
if (!util::tool::inHTMLTag(index, ret)) {
length = matchLen;
ret = ret.insert( index + length, rep2 );
ret = ret.insert( index, rep1 );
index += repLength;
}
index += length;
}
}
qDebug() << "btsearchresultarea.cpp: " << __LINE__ << ": " << words << '\n';
//qWarning("\n\n\n%s", ret.latin1());
return ret;
}
QStringList CSwordModuleSearch::queryParser(const QString& queryString) {
QString token;
QStringList tokenList;
int cnt, pos;
token = "";
cnt = 0;
while (cnt < queryString.length()) {
// add to token
if ((queryString[cnt]).isLetterOrNumber() || (queryString[cnt] == '*')) {
token = token + queryString[cnt];
cnt++;
}
else if ((queryString[cnt]).isLetterOrNumber() || (queryString[cnt] == '?')) {
token = token + queryString[cnt];
cnt++;
}
// token break
else if (queryString[cnt] == ' ') {
token = token.simplified();
if ((token != "*") && (token != ""))
tokenList.append(token);
token = "";
cnt++;
}
// clucene appears to ignore quoted strings in the sence
// that it treats all the words within quoted strings as
// regular tokens and not as a single token.
else if (queryString[cnt] == '"') {
cnt++;
}
// wild card - treat as a special token break
//else if (queryString[cnt] == '*') {
// token = token + queryString[cnt];
// token = token.simplified();
// if ((token != "*") && (token != ""))
// tokenList.append(token);
// // start next token with wildcard (kin*m -> kin* *m)
// token = "*";
// cnt++;
//}
// the ! token is also a token break
else if (queryString[cnt] == '!') {
// store away current token
token = token.simplified();
if ((token != "*") && (token != ""))
tokenList.append(token);
// add the ! token
tokenList.append("!");
token = "";
cnt++;
}
// the - token is also a token break
else if (queryString[cnt] == '-') {
// store away current token
token = token.simplified();
if ((token != "*") && (token != ""))
tokenList.append(token);
// add the ! token
tokenList.append("-");
token = "";
cnt++;
}
// the + token is also a token break
else if (queryString[cnt] == '+') {
// store away current token
token = token.simplified();
if ((token != "*") && (token != ""))
tokenList.append(token);
// add the + token
tokenList.append("+");
token = "";
cnt++;
}
// the || token is also a token break
else if ((queryString[cnt] == '|') && (queryString[cnt+1] == '|')) {
// store away current token
token = token.simplified();
if ((token != "*") && (token != ""))
tokenList.append(token);
// add the || token
tokenList.append("||");
token = "";
cnt += 2;
}
// the && token is also a token break
else if ((queryString[cnt] == '&') && (queryString[cnt+1] == '&')) {
// store away current token
token = token.simplified();
if ((token != "*") && (token != ""))
tokenList.append(token);
// add the || token
tokenList.append("&&");
token = "";
cnt += 2;
}
else cnt++;
}
token = token.simplified();
if ((token != "*") && (token != ""))
tokenList.append(token);
cnt = 0;
QStringList::iterator it;
for (it = tokenList.begin(); it != tokenList.end(); ++it) {
//-----------------------------------------------------------
// remove all the NOT(!) tokens - these do not need to be
// highlighted in the highlighter
//-----------------------------------------------------------
if (((*it) == "!") || ((*it) == "NOT") || ((*it) == "-")) {
it = tokenList.erase(it);
if (it == tokenList.end())
break;
it = tokenList.erase(it);
if (it == tokenList.end())
break;
--it;
}
//-----------------------------------------------------------
// remove all the operator tokens - these do not need to be
// highlighted in the highlighter
//-----------------------------------------------------------
else if ( ((*it) == "||") || ((*it) == "OR") || ((*it) == "+") ||
((*it) == "AND") || ((*it) == "&&") ) {
it = tokenList.erase(it);
if (it == tokenList.end())
break;
--it;
}
// if the token contains a ^ then trim the remainder of the
// token from the ^
//What??? error: invalid conversion from ‘const void*’ to ‘int’
// and how come "contains" returns bool but is used as int?
//else if ( (pos = (*it).contains("^")) >= 0 ) {
else if ( (pos = (*it).indexOf("^") ) >= 0 ) {
(*it) = (*it).left(pos - 1);
}
// if the token contains a ~ then trim the remainder of the
// token from the ~
else if ( (pos = (*it).indexOf("~") ) >= 0 ) {
(*it) = (*it).left(pos - 2) + "*";
}
}
return(tokenList);
}
|
