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lookup.cpp
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lookup.cpp
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#include "lookup.h"
#include <QDir>
#include <QSet>
#include <QFile>
#include <QRegExp>
#include <QDesktopServices>
#include "sqlite3.h"
namespace
{
QSet<QString> fileLoader(const QString &fileName)
{
QSet<QString> result;
QFile file(fileName);
if (file.open(QFile::ReadOnly))
{
while (!file.atEnd())
{
QByteArray line = file.readLine(128);
result.insert(QString::fromUtf8(line.constData(), line.size()).trimmed());
}
}
return result;
}
}
JishoLookupMode jishoGuessLookupMode(const QString &term)
{
if (term.indexOf(QRegExp("[abcdefghijklmnopqrstuvwxyz]")) >= 0)
{
static QSet<QString> kana = fileLoader(":/resources/kana.txt");
QString checkTerm(term);
bool kanaOk = true;
while (!checkTerm.isEmpty())
{
bool found = false;
foreach(QString k, kana)
{
if (checkTerm.startsWith(k))
{
found = true;
checkTerm.remove(0, k.size());
break;
}
}
if (!found)
{
kanaOk = false;
break;
}
}
if (kanaOk)
return LookupRomaji;
else
return LookupNative;
}
return LookupJapanese;
}
namespace
{
void readToStringList(sqlite3_stmt *stmt, QStringList &list, int entry, const QString &lang = QString())
{
sqlite3_bind_int(stmt, 1, entry);
if (!lang.isEmpty())
{
QByteArray ba = lang.toUtf8();
sqlite3_bind_text(stmt, 2, ba.constData(), ba.size(), SQLITE_TRANSIENT);
}
int stepResult;
while ((stepResult = sqlite3_step(stmt)) != SQLITE_DONE)
{
if (stepResult == SQLITE_ROW)
{
list.append(
QString::fromUtf8(
reinterpret_cast<const char*>(sqlite3_column_text(stmt, 0)),
-1));
}
}
}
}
QVector<JishoLookupResult> jishoLookup(const QString &term, JishoLookupMode mode)
{
QVector<JishoLookupResult> result;
QDir appData(QDesktopServices::storageLocation(QDesktopServices::DataLocation));
QString dbName = QDir::toNativeSeparators(appData.filePath("jpdict.sqlite3"));
sqlite3 *db;
if (sqlite3_open_v2(dbName.toUtf8().constData(), &db, SQLITE_OPEN_READONLY, 0) != SQLITE_OK)
return result;
QStringList statements;
switch (mode)
{
case LookupNative:
statements.append("select entry from gloss where lang='en' and upper(gloss)=upper(?)");
break;
case LookupRomaji:
statements.append("select entry from reading where romaji=lower(?)");
break;
case LookupJapanese:
statements.append("select entry from kanji where kanji=?");
statements.append("select entry from reading where kana=?");
break;
}
QSet<int> entries;
foreach (QString sql, statements)
{
QByteArray baSql = sql.toUtf8();
sqlite3_stmt *stmt;
if (sqlite3_prepare_v2(db, baSql.constData(), baSql.size(), &stmt, 0) == SQLITE_OK)
{
QByteArray baParam = term.toUtf8();
if (sqlite3_bind_text(stmt, 1, baParam.constData(), baParam.size(), SQLITE_TRANSIENT) == SQLITE_OK)
{
int stepResult;
while ((stepResult = sqlite3_step(stmt)) != SQLITE_DONE)
{
if (stepResult == SQLITE_ROW)
entries.insert(sqlite3_column_int(stmt, 0));
}
}
sqlite3_finalize(stmt);
}
}
if (!entries.isEmpty())
{
sqlite3_stmt *stmtKana = 0, *stmtKanji = 0, *stmtMeanings = 0;
if (sqlite3_prepare_v2(db, "select kana from reading where entry=?", -1, &stmtKana, 0) == SQLITE_OK &&
sqlite3_prepare_v2(db, "select kanji from kanji where entry=?", -1, &stmtKanji, 0) == SQLITE_OK &&
sqlite3_prepare_v2(db, "select gloss from gloss where entry=? and lang=? order by sense", -1, &stmtMeanings, 0) == SQLITE_OK)
{
foreach (int entry, entries)
{
sqlite3_reset(stmtKana);
sqlite3_reset(stmtKanji);
sqlite3_reset(stmtMeanings);
QStringList kanas, kanjis, meanings;
readToStringList(stmtKana, kanas, entry);
readToStringList(stmtKanji, kanjis, entry);
readToStringList(stmtMeanings, meanings, entry, "en");
QString kanji;
if (kanjis.isEmpty())
kanji = kanas.join(", ");
else
{
kanji = kanjis.join(", ");
if (!kanas.isEmpty())
kanji += " (" + kanas.join(", ") + ")";
}
JishoLookupResult entry;
entry.kanji = kanji;
entry.meanings = meanings;
result.append(entry);
}
}
if (stmtKana)
sqlite3_finalize(stmtKana);
if (stmtKanji)
sqlite3_finalize(stmtKanji);
if (stmtMeanings);
sqlite3_finalize(stmtMeanings);
}
sqlite3_close(db);
return result;
}