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add UTF16 and UTF16CI collation

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UTF16 = Case sensitive compare
UTF16CI = Case insensitive compare

comparison is performed by QString functions
This commit is contained in:
Sebastian Philipp
2015-07-28 10:51:16 +02:00
parent a9670fb6ca
commit 6388ac81ba
1 changed files with 21 additions and 0 deletions
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21
src/sqlitedb.cpp
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@@ -22,6 +22,22 @@ int collCompare(void* /*pArg*/, int /*eTextRepA*/, const void* sA, int /*eTextRe
return sizeA - sizeB;
}
static int sqlite_compare_utf16( void* /*arg*/,int size1, const void *str1, int size2, const void* str2)
{
const QString string1 = QString::fromRawData(reinterpret_cast<const QChar*>(str1), size1 / sizeof(QChar));
const QString string2 = QString::fromRawData(reinterpret_cast<const QChar*>(str2), size2 / sizeof(QChar));
return QString::compare(string1, string2, Qt::CaseSensitive);
}
static int sqlite_compare_utf16ci( void* /*arg*/,int size1, const void *str1, int size2, const void* str2)
{
const QString string1 = QString::fromRawData(reinterpret_cast<const QChar*>(str1), size1 / sizeof(QChar));
const QString string2 = QString::fromRawData(reinterpret_cast<const QChar*>(str2), size2 / sizeof(QChar));
return QString::compare(string1, string2, Qt::CaseInsensitive);
}
void collation_needed(void* /*pData*/, sqlite3* db, int eTextRep, const char* sCollationName)
{
QMessageBox::StandardButton reply = QMessageBox::question(
@@ -99,6 +115,11 @@ bool DBBrowserDB::open(const QString& db)
if (_db)
{
// add UTF16 collation (comparison is performed by QString functions)
sqlite3_create_collation(_db, "UTF16", SQLITE_UTF16, 0, sqlite_compare_utf16);
// add UTF16CI (case insensitive) collation (comparison is performed by QString functions)
sqlite3_create_collation(_db, "UTF16CI", SQLITE_UTF16, 0, sqlite_compare_utf16ci);
// register collation callback
sqlite3_collation_needed(_db, NULL, collation_needed);