1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/storage/src/variantToSQLiteT_impl.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,127 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +// Note: we are already in the namepace mozilla::storage
1.11 +
1.12 +// Note 2: whoever #includes this file must provide implementations of
1.13 +// sqlite3_T_* prior.
1.14 +
1.15 +////////////////////////////////////////////////////////////////////////////////
1.16 +//// variantToSQLiteT Implementation
1.17 +
1.18 +template <typename T>
1.19 +int
1.20 +variantToSQLiteT(T aObj,
1.21 + nsIVariant *aValue)
1.22 +{
1.23 + // Allow to return nullptr not wrapped to nsIVariant for speed.
1.24 + if (!aValue)
1.25 + return sqlite3_T_null(aObj);
1.26 +
1.27 + uint16_t type;
1.28 + (void)aValue->GetDataType(&type);
1.29 + switch (type) {
1.30 + case nsIDataType::VTYPE_INT8:
1.31 + case nsIDataType::VTYPE_INT16:
1.32 + case nsIDataType::VTYPE_INT32:
1.33 + case nsIDataType::VTYPE_UINT8:
1.34 + case nsIDataType::VTYPE_UINT16:
1.35 + {
1.36 + int32_t value;
1.37 + nsresult rv = aValue->GetAsInt32(&value);
1.38 + NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
1.39 + return sqlite3_T_int(aObj, value);
1.40 + }
1.41 + case nsIDataType::VTYPE_UINT32: // Try to preserve full range
1.42 + case nsIDataType::VTYPE_INT64:
1.43 + // Data loss possible, but there is no unsigned types in SQLite
1.44 + case nsIDataType::VTYPE_UINT64:
1.45 + {
1.46 + int64_t value;
1.47 + nsresult rv = aValue->GetAsInt64(&value);
1.48 + NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
1.49 + return sqlite3_T_int64(aObj, value);
1.50 + }
1.51 + case nsIDataType::VTYPE_FLOAT:
1.52 + case nsIDataType::VTYPE_DOUBLE:
1.53 + {
1.54 + double value;
1.55 + nsresult rv = aValue->GetAsDouble(&value);
1.56 + NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
1.57 + return sqlite3_T_double(aObj, value);
1.58 + }
1.59 + case nsIDataType::VTYPE_BOOL:
1.60 + {
1.61 + bool value;
1.62 + nsresult rv = aValue->GetAsBool(&value);
1.63 + NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
1.64 + return sqlite3_T_int(aObj, value ? 1 : 0);
1.65 + }
1.66 + case nsIDataType::VTYPE_CHAR:
1.67 + case nsIDataType::VTYPE_CHAR_STR:
1.68 + case nsIDataType::VTYPE_STRING_SIZE_IS:
1.69 + case nsIDataType::VTYPE_UTF8STRING:
1.70 + case nsIDataType::VTYPE_CSTRING:
1.71 + {
1.72 + nsAutoCString value;
1.73 + // GetAsAUTF8String should never perform conversion when coming from
1.74 + // 8-bit string types, and thus can accept strings with arbitrary encoding
1.75 + // (including UTF8 and ASCII).
1.76 + nsresult rv = aValue->GetAsAUTF8String(value);
1.77 + NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
1.78 + return sqlite3_T_text(aObj, value);
1.79 + }
1.80 + case nsIDataType::VTYPE_WCHAR:
1.81 + case nsIDataType::VTYPE_DOMSTRING:
1.82 + case nsIDataType::VTYPE_WCHAR_STR:
1.83 + case nsIDataType::VTYPE_WSTRING_SIZE_IS:
1.84 + case nsIDataType::VTYPE_ASTRING:
1.85 + {
1.86 + nsAutoString value;
1.87 + // GetAsAString does proper conversion to UCS2 from all string-like types.
1.88 + // It can be used universally without problems (unless someone implements
1.89 + // their own variant, but that's their problem).
1.90 + nsresult rv = aValue->GetAsAString(value);
1.91 + NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
1.92 + return sqlite3_T_text16(aObj, value);
1.93 + }
1.94 + case nsIDataType::VTYPE_VOID:
1.95 + case nsIDataType::VTYPE_EMPTY:
1.96 + case nsIDataType::VTYPE_EMPTY_ARRAY:
1.97 + return sqlite3_T_null(aObj);
1.98 + case nsIDataType::VTYPE_ARRAY:
1.99 + {
1.100 + uint16_t type;
1.101 + nsIID iid;
1.102 + uint32_t count;
1.103 + void *data;
1.104 + nsresult rv = aValue->GetAsArray(&type, &iid, &count, &data);
1.105 + NS_ENSURE_SUCCESS(rv, SQLITE_MISMATCH);
1.106 +
1.107 + // Check to make sure it's a supported type.
1.108 + NS_ASSERTION(type == nsIDataType::VTYPE_UINT8,
1.109 + "Invalid type passed! You may leak!");
1.110 + if (type != nsIDataType::VTYPE_UINT8) {
1.111 + // Technically this could leak with certain data types, but somebody was
1.112 + // being stupid passing us this anyway.
1.113 + NS_Free(data);
1.114 + return SQLITE_MISMATCH;
1.115 + }
1.116 +
1.117 + // Finally do our thing. The function should free the array accordingly!
1.118 + int rc = sqlite3_T_blob(aObj, data, count);
1.119 + return rc;
1.120 + }
1.121 + // Maybe, it'll be possible to convert these
1.122 + // in future too.
1.123 + case nsIDataType::VTYPE_ID:
1.124 + case nsIDataType::VTYPE_INTERFACE:
1.125 + case nsIDataType::VTYPE_INTERFACE_IS:
1.126 + default:
1.127 + return SQLITE_MISMATCH;
1.128 + }
1.129 + return SQLITE_OK;
1.130 +}
