gecko-dev/storage/mozStorageArgValueArray.cpp

216 строки
5.2 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsError.h"
#include "nsMemory.h"
#include "nsString.h"
#include "mozStoragePrivateHelpers.h"
#include "mozStorageArgValueArray.h"
namespace mozilla {
namespace storage {
////////////////////////////////////////////////////////////////////////////////
//// ArgValueArray
ArgValueArray::ArgValueArray(int32_t aArgc,
sqlite3_value **aArgv)
: mArgc(aArgc)
, mArgv(aArgv)
{
}
NS_IMPL_ISUPPORTS(
ArgValueArray,
mozIStorageValueArray
)
////////////////////////////////////////////////////////////////////////////////
//// mozIStorageValueArray
NS_IMETHODIMP
ArgValueArray::GetNumEntries(uint32_t *_size)
{
*_size = mArgc;
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetTypeOfIndex(uint32_t aIndex,
int32_t *_type)
{
ENSURE_INDEX_VALUE(aIndex, mArgc);
int t = ::sqlite3_value_type(mArgv[aIndex]);
switch (t) {
case SQLITE_INTEGER:
*_type = VALUE_TYPE_INTEGER;
break;
case SQLITE_FLOAT:
*_type = VALUE_TYPE_FLOAT;
break;
case SQLITE_TEXT:
*_type = VALUE_TYPE_TEXT;
break;
case SQLITE_BLOB:
*_type = VALUE_TYPE_BLOB;
break;
case SQLITE_NULL:
*_type = VALUE_TYPE_NULL;
break;
default:
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetInt32(uint32_t aIndex,
int32_t *_value)
{
ENSURE_INDEX_VALUE(aIndex, mArgc);
*_value = ::sqlite3_value_int(mArgv[aIndex]);
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetInt64(uint32_t aIndex,
int64_t *_value)
{
ENSURE_INDEX_VALUE(aIndex, mArgc);
*_value = ::sqlite3_value_int64(mArgv[aIndex]);
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetDouble(uint32_t aIndex,
double *_value)
{
ENSURE_INDEX_VALUE(aIndex, mArgc);
*_value = ::sqlite3_value_double(mArgv[aIndex]);
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetUTF8String(uint32_t aIndex,
nsACString &_value)
{
ENSURE_INDEX_VALUE(aIndex, mArgc);
if (::sqlite3_value_type(mArgv[aIndex]) == SQLITE_NULL) {
// NULL columns should have IsVoid set to distinguish them from an empty
// string.
_value.Truncate(0);
_value.SetIsVoid(true);
}
else {
_value.Assign(reinterpret_cast<const char *>(::sqlite3_value_text(mArgv[aIndex])),
::sqlite3_value_bytes(mArgv[aIndex]));
}
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetString(uint32_t aIndex,
nsAString &_value)
{
ENSURE_INDEX_VALUE(aIndex, mArgc);
if (::sqlite3_value_type(mArgv[aIndex]) == SQLITE_NULL) {
// NULL columns should have IsVoid set to distinguish them from an empty
// string.
_value.Truncate(0);
_value.SetIsVoid(true);
} else {
_value.Assign(static_cast<const char16_t *>(::sqlite3_value_text16(mArgv[aIndex])),
::sqlite3_value_bytes16(mArgv[aIndex]) / 2);
}
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetBlob(uint32_t aIndex,
uint32_t *_size,
uint8_t **_blob)
{
ENSURE_INDEX_VALUE(aIndex, mArgc);
int size = ::sqlite3_value_bytes(mArgv[aIndex]);
void *blob = nsMemory::Clone(::sqlite3_value_blob(mArgv[aIndex]), size);
NS_ENSURE_TRUE(blob, NS_ERROR_OUT_OF_MEMORY);
*_blob = static_cast<uint8_t *>(blob);
*_size = size;
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetBlobAsString(uint32_t aIndex, nsAString& aValue)
{
return DoGetBlobAsString(this, aIndex, aValue);
}
NS_IMETHODIMP
ArgValueArray::GetBlobAsUTF8String(uint32_t aIndex, nsACString& aValue)
{
return DoGetBlobAsString(this, aIndex, aValue);
}
NS_IMETHODIMP
ArgValueArray::GetIsNull(uint32_t aIndex,
bool *_isNull)
{
// GetTypeOfIndex will check aIndex for us, so we don't have to.
int32_t type;
nsresult rv = GetTypeOfIndex(aIndex, &type);
NS_ENSURE_SUCCESS(rv, rv);
*_isNull = (type == VALUE_TYPE_NULL);
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetSharedUTF8String(uint32_t aIndex,
uint32_t *_length,
const char **_string)
{
if (_length)
*_length = ::sqlite3_value_bytes(mArgv[aIndex]);
*_string = reinterpret_cast<const char *>(::sqlite3_value_text(mArgv[aIndex]));
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetSharedString(uint32_t aIndex,
uint32_t *_length,
const char16_t **_string)
{
if (_length)
*_length = ::sqlite3_value_bytes(mArgv[aIndex]);
*_string = static_cast<const char16_t *>(::sqlite3_value_text16(mArgv[aIndex]));
return NS_OK;
}
NS_IMETHODIMP
ArgValueArray::GetSharedBlob(uint32_t aIndex,
uint32_t *_size,
const uint8_t **_blob)
{
*_size = ::sqlite3_value_bytes(mArgv[aIndex]);
*_blob = static_cast<const uint8_t *>(::sqlite3_value_blob(mArgv[aIndex]));
return NS_OK;
}
} // namespace storage
} // namespace mozilla