128 lines
4.3 KiB
C++
128 lines
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Note: we are already in the namepace mozilla::storage
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// Note 2: whoever #includes this file must provide implementations of
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// sqlite3_T_* prior.
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////////////////////////////////////////////////////////////////////////////////
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//// variantToSQLiteT Implementation
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template <typename T>
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int
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variantToSQLiteT(T aObj,
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nsIVariant *aValue)
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{
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// Allow to return nullptr not wrapped to nsIVariant for speed.
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if (!aValue)
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return sqlite3_T_null(aObj);
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uint16_t type;
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(void)aValue->GetDataType(&type);
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switch (type) {
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case nsIDataType::VTYPE_INT8:
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case nsIDataType::VTYPE_INT16:
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case nsIDataType::VTYPE_INT32:
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case nsIDataType::VTYPE_UINT8:
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case nsIDataType::VTYPE_UINT16:
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{
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int32_t value;
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nsresult rv = aValue->GetAsInt32(&value);
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NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
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return sqlite3_T_int(aObj, value);
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}
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case nsIDataType::VTYPE_UINT32: // Try to preserve full range
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case nsIDataType::VTYPE_INT64:
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// Data loss possible, but there is no unsigned types in SQLite
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case nsIDataType::VTYPE_UINT64:
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{
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int64_t value;
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nsresult rv = aValue->GetAsInt64(&value);
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NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
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return sqlite3_T_int64(aObj, value);
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}
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case nsIDataType::VTYPE_FLOAT:
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case nsIDataType::VTYPE_DOUBLE:
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{
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double value;
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nsresult rv = aValue->GetAsDouble(&value);
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NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
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return sqlite3_T_double(aObj, value);
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}
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case nsIDataType::VTYPE_BOOL:
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{
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bool value;
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nsresult rv = aValue->GetAsBool(&value);
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NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
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return sqlite3_T_int(aObj, value ? 1 : 0);
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}
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case nsIDataType::VTYPE_CHAR:
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case nsIDataType::VTYPE_CHAR_STR:
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case nsIDataType::VTYPE_STRING_SIZE_IS:
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case nsIDataType::VTYPE_UTF8STRING:
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case nsIDataType::VTYPE_CSTRING:
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{
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nsAutoCString value;
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// GetAsAUTF8String should never perform conversion when coming from
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// 8-bit string types, and thus can accept strings with arbitrary encoding
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// (including UTF8 and ASCII).
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nsresult rv = aValue->GetAsAUTF8String(value);
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NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
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return sqlite3_T_text(aObj, value);
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}
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case nsIDataType::VTYPE_WCHAR:
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case nsIDataType::VTYPE_DOMSTRING:
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case nsIDataType::VTYPE_WCHAR_STR:
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case nsIDataType::VTYPE_WSTRING_SIZE_IS:
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case nsIDataType::VTYPE_ASTRING:
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{
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nsAutoString value;
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// GetAsAString does proper conversion to UCS2 from all string-like types.
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// It can be used universally without problems (unless someone implements
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// their own variant, but that's their problem).
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nsresult rv = aValue->GetAsAString(value);
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NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
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return sqlite3_T_text16(aObj, value);
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}
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case nsIDataType::VTYPE_VOID:
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case nsIDataType::VTYPE_EMPTY:
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case nsIDataType::VTYPE_EMPTY_ARRAY:
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return sqlite3_T_null(aObj);
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case nsIDataType::VTYPE_ARRAY:
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{
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uint16_t type;
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nsIID iid;
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uint32_t count;
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void *data;
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nsresult rv = aValue->GetAsArray(&type, &iid, &count, &data);
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NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
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// Check to make sure it's a supported type.
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NS_ASSERTION(type == nsIDataType::VTYPE_UINT8,
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"Invalid type passed! You may leak!");
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if (type != nsIDataType::VTYPE_UINT8) {
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// Technically this could leak with certain data types, but somebody was
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// being stupid passing us this anyway.
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free(data);
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return SQLITE_MISMATCH;
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}
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// Finally do our thing. The function should free the array accordingly!
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int rc = sqlite3_T_blob(aObj, data, count);
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return rc;
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}
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// Maybe, it'll be possible to convert these
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// in future too.
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case nsIDataType::VTYPE_ID:
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case nsIDataType::VTYPE_INTERFACE:
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case nsIDataType::VTYPE_INTERFACE_IS:
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default:
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return SQLITE_MISMATCH;
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}
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return SQLITE_OK;
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}
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