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Simplied conversions from strings to numbers #1146

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merged 5 commits into from
Jun 26, 2020
Merged

Simplied conversions from strings to numbers #1146

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a1c8aa6
Simplied conversions from strings to numbers
yitam Jun 23, 2020
04ff40d
Merge branch 'dev' into strtonum
yitam Jun 23, 2020
2c30cee
Removed obsolete code and added test cases
yitam Jun 24, 2020
a717509
Added more test cases
yitam Jun 24, 2020
ad8a1c7
Removed obsolete code
yitam Jun 26, 2020
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119 changes: 54 additions & 65 deletions source/shared/core_results.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -262,64 +262,6 @@ std::string getUTF8StringFromString( _In_z_ const char* source )

#endif // !_WIN32

template <typename Number, typename Char>
SQLRETURN string_to_number( _In_z_ Char* string_data, SQLLEN str_len, _Out_writes_bytes_(*out_buffer_length) void* buffer, SQLLEN buffer_length,
_Inout_ SQLLEN* out_buffer_length, _Inout_ sqlsrv_error_auto_ptr& last_error )
{
Number* number_data = reinterpret_cast<Number*>( buffer );
#ifdef _WIN32
std::locale loc; // default locale should match system
std::basic_istringstream<Char> is;
is.str( string_data );
is.imbue( loc );
std::ios_base::iostate st = 0;

std::use_facet< std::num_get< Char > >( loc ).get( std::basic_istream<Char>::_Iter( is.rdbuf()), std::basic_istream<Char>::_Iter( 0 ), is, st, *number_data );

if ( st & std::ios_base::failbit ) {
last_error = new ( sqlsrv_malloc( sizeof( sqlsrv_error ))) sqlsrv_error(( SQLCHAR* ) "22003", ( SQLCHAR* ) "Numeric value out of range", 103 );
return SQL_ERROR;
}

*out_buffer_length = sizeof( Number );
#else
std::string str = getUTF8StringFromString( string_data );

std::istringstream is( str );
std::locale loc; // default locale should match system
is.imbue( loc );

auto& facet = std::use_facet<std::num_get<char>>( is.getloc() );
std::istreambuf_iterator<char> beg( is ), end;
std::ios_base::iostate err = std::ios_base::goodbit;

if ( std::is_integral<Number>::value )
{
long number;
facet.get( beg, end, is, err, number );

*number_data = number;
}
else
{
double number;
facet.get( beg, end, is, err, number );

*number_data = number;
}

*out_buffer_length = sizeof( Number );

if ( is.fail() )
{
last_error = new ( sqlsrv_malloc(sizeof( sqlsrv_error ))) sqlsrv_error(( SQLCHAR* ) "22003", ( SQLCHAR* ) "Numeric value out of range", 103 );
return SQL_ERROR;
}
#endif // _WIN32
return SQL_SUCCESS;

}

// "closure" for the hash table destructor
struct row_dtor_closure {

Expand Down Expand Up @@ -851,7 +793,7 @@ SQLRETURN sqlsrv_buffered_result_set::get_data( _In_ SQLUSMALLINT field_index, _
case SQL_C_LONG: return sqlsrv_buffered_result_set::to_long(field_index, buffer, buffer_length, out_buffer_length);
case SQL_C_BINARY: return sqlsrv_buffered_result_set::to_long(field_index, buffer, buffer_length, out_buffer_length);
case SQL_C_CHAR: return sqlsrv_buffered_result_set::long_to_system_string(field_index, buffer, buffer_length, out_buffer_length);
case SQL_C_WCHAR: return sqlsrv_buffered_result_set::long_to_wide_string(field_index, buffer, buffer_length, out_buffer_length);
//case SQL_C_WCHAR: return sqlsrv_buffered_result_set::long_to_wide_string(field_index, buffer, buffer_length, out_buffer_length);
default:
break;
}
Expand All @@ -862,7 +804,7 @@ SQLRETURN sqlsrv_buffered_result_set::get_data( _In_ SQLUSMALLINT field_index, _
case SQL_C_BINARY: return sqlsrv_buffered_result_set::to_double(field_index, buffer, buffer_length, out_buffer_length);
case SQL_C_CHAR: return sqlsrv_buffered_result_set::double_to_system_string(field_index, buffer, buffer_length, out_buffer_length);
case SQL_C_LONG: return sqlsrv_buffered_result_set::double_to_long(field_index, buffer, buffer_length, out_buffer_length);
case SQL_C_WCHAR: return sqlsrv_buffered_result_set::double_to_wide_string(field_index, buffer, buffer_length, out_buffer_length);
//case SQL_C_WCHAR: return sqlsrv_buffered_result_set::double_to_wide_string(field_index, buffer, buffer_length, out_buffer_length);
default:
break;
}
Expand Down Expand Up @@ -1082,6 +1024,7 @@ SQLRETURN sqlsrv_buffered_result_set::double_to_system_string( _In_ SQLSMALLINT
return r;
}

/*
SQLRETURN sqlsrv_buffered_result_set::double_to_wide_string( _In_ SQLSMALLINT field_index, _Out_writes_bytes_to_opt_(buffer_length, *out_buffer_length) void* buffer, _In_ SQLLEN buffer_length,
_Inout_ SQLLEN* out_buffer_length )
{
Expand All @@ -1098,7 +1041,7 @@ SQLRETURN sqlsrv_buffered_result_set::double_to_wide_string( _In_ SQLSMALLINT fi
#endif // _WIN32
return r;
}

*/
SQLRETURN sqlsrv_buffered_result_set::long_to_double( _In_ SQLSMALLINT field_index, _Out_writes_bytes_(*out_buffer_length) void* buffer, _In_ SQLLEN buffer_length,
_Out_ SQLLEN* out_buffer_length )
{
Expand Down Expand Up @@ -1131,6 +1074,7 @@ SQLRETURN sqlsrv_buffered_result_set::long_to_system_string( _In_ SQLSMALLINT fi
return r;
}

/*
SQLRETURN sqlsrv_buffered_result_set::long_to_wide_string( _In_ SQLSMALLINT field_index, _Out_writes_bytes_to_opt_(buffer_length, *out_buffer_length) void* buffer, _In_ SQLLEN buffer_length,
_Inout_ SQLLEN* out_buffer_length )
{
Expand All @@ -1147,6 +1091,7 @@ SQLRETURN sqlsrv_buffered_result_set::long_to_wide_string( _In_ SQLSMALLINT fiel
#endif // _WIN32
return r;
}
*/

SQLRETURN sqlsrv_buffered_result_set::string_to_double( _In_ SQLSMALLINT field_index, _Out_writes_bytes_(*out_buffer_length) void* buffer, _In_ SQLLEN buffer_length,
_Inout_ SQLLEN* out_buffer_length )
Expand All @@ -1157,7 +1102,16 @@ SQLRETURN sqlsrv_buffered_result_set::string_to_double( _In_ SQLSMALLINT field_i
unsigned char* row = get_row();
char* string_data = reinterpret_cast<char*>( &row[meta[field_index].offset] ) + sizeof( SQLULEN );

return string_to_number<double>( string_data, meta[field_index].length, buffer, buffer_length, out_buffer_length, last_error );
double* number_data = reinterpret_cast<double*>(buffer);
try {
*number_data = std::stod(std::string(string_data));
} catch (const std::logic_error& err) {
last_error = new (sqlsrv_malloc(sizeof(sqlsrv_error))) sqlsrv_error((SQLCHAR*) "22003", (SQLCHAR*) "Numeric value out of range", 103);
return SQL_ERROR;
}

*out_buffer_length = sizeof(double);
return SQL_SUCCESS;
}

SQLRETURN sqlsrv_buffered_result_set::wstring_to_double( _In_ SQLSMALLINT field_index, _Out_writes_bytes_(*out_buffer_length) void* buffer, _In_ SQLLEN buffer_length,
Expand All @@ -1169,7 +1123,20 @@ SQLRETURN sqlsrv_buffered_result_set::wstring_to_double( _In_ SQLSMALLINT field_
unsigned char* row = get_row();
SQLWCHAR* string_data = reinterpret_cast<SQLWCHAR*>( &row[meta[field_index].offset] ) + sizeof( SQLULEN ) / sizeof( SQLWCHAR );

return string_to_number<double>( string_data, meta[field_index].length, buffer, buffer_length, out_buffer_length, last_error );
double* number_data = reinterpret_cast<double*>(buffer);
try {
#ifdef _WIN32
*number_data = std::stod(std::wstring(string_data));
#else
*number_data = std::stod(getUTF8StringFromString(string_data));
#endif // _WIN32
} catch (const std::logic_error& err) {
last_error = new (sqlsrv_malloc(sizeof(sqlsrv_error))) sqlsrv_error((SQLCHAR*) "22003", (SQLCHAR*) "Numeric value out of range", 103);
return SQL_ERROR;
}

*out_buffer_length = sizeof(double);
return SQL_SUCCESS;
}

SQLRETURN sqlsrv_buffered_result_set::string_to_long( _In_ SQLSMALLINT field_index, _Out_writes_bytes_(*out_buffer_length) void* buffer, _In_ SQLLEN buffer_length,
Expand All @@ -1181,7 +1148,16 @@ SQLRETURN sqlsrv_buffered_result_set::string_to_long( _In_ SQLSMALLINT field_ind
unsigned char* row = get_row();
char* string_data = reinterpret_cast<char*>( &row[meta[field_index].offset] ) + sizeof( SQLULEN );

return string_to_number<LONG>( string_data, meta[field_index].length, buffer, buffer_length, out_buffer_length, last_error );
LONG* number_data = reinterpret_cast<LONG*>(buffer);
try {
*number_data = std::stol(std::string(string_data));
} catch (const std::logic_error& err) {
last_error = new (sqlsrv_malloc(sizeof(sqlsrv_error))) sqlsrv_error((SQLCHAR*) "22003", (SQLCHAR*) "Numeric value out of range", 103);
return SQL_ERROR;
}

*out_buffer_length = sizeof(LONG);
return SQL_SUCCESS;
}

SQLRETURN sqlsrv_buffered_result_set::wstring_to_long( _In_ SQLSMALLINT field_index, _Out_writes_bytes_(*out_buffer_length) void* buffer, _In_ SQLLEN buffer_length,
Expand All @@ -1193,7 +1169,20 @@ SQLRETURN sqlsrv_buffered_result_set::wstring_to_long( _In_ SQLSMALLINT field_in
unsigned char* row = get_row();
SQLWCHAR* string_data = reinterpret_cast<SQLWCHAR*>( &row[meta[field_index].offset] ) + sizeof( SQLULEN ) / sizeof( SQLWCHAR );

return string_to_number<LONG>( string_data, meta[field_index].length, buffer, buffer_length, out_buffer_length, last_error );
LONG* number_data = reinterpret_cast<LONG*>(buffer);
try {
#ifdef _WIN32
*number_data = std::stol(std::wstring(string_data));
#else
*number_data = std::stol(getUTF8StringFromString(string_data));
#endif // _WIN32
} catch (const std::logic_error& err) {
last_error = new (sqlsrv_malloc(sizeof(sqlsrv_error))) sqlsrv_error((SQLCHAR*) "22003", (SQLCHAR*) "Numeric value out of range", 103);
return SQL_ERROR;
}

*out_buffer_length = sizeof(LONG);
return SQL_SUCCESS;
}

SQLRETURN sqlsrv_buffered_result_set::system_to_wide_string( _In_ SQLSMALLINT field_index, _Out_writes_z_(*out_buffer_length) void* buffer, _In_ SQLLEN buffer_length,
Expand Down
70 changes: 61 additions & 9 deletions test/functional/pdo_sqlsrv/pdo_buffered_fetch_types.phpt
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Original file line number Diff line number Diff line change
Expand Up @@ -14,12 +14,40 @@ $outOfRange = 'Numeric value out of range';
$truncation = 'Fractional truncation';
$epsilon = 0.00001;

function fetchAsChar($conn, $tableName, $inputs)
{
$query = "SELECT c1, c2, c3, c4, c5, c6 FROM $tableName";
try {
$stmt = $conn->prepare($query, array(PDO::ATTR_CURSOR=>PDO::CURSOR_SCROLL, PDO::SQLSRV_ATTR_CURSOR_SCROLL_TYPE=>PDO::SQLSRV_CURSOR_BUFFERED));
$stmt->setAttribute(PDO::SQLSRV_ATTR_ENCODING, PDO::SQLSRV_ENCODING_SYSTEM);

// Fetch all fields as strings - no conversion
for ($i = 0; $i < count($inputs) - 1; $i++) {
$stmt->execute();
$f = $stmt->fetchColumn($i);

if ($i == 2) {
if (!compareFloats(floatval($inputs[$i]), floatval($f))) {
echo "In fetchAsChar ($i): expected $inputs[$i]\n";
var_dump($f);
}
} elseif ($f !== $inputs[$i]) {
echo "In fetchAsChar ($i): expected $inputs[$i]\n";
var_dump($f);
}
}
} catch (PdoException $e) {
echo "Caught exception in fetchAsChar:\n";
echo $e->getMessage() . PHP_EOL;
}
}

function fetchAsUTF8($conn, $tableName, $inputs)
{
$query = "SELECT * FROM $tableName";
try {
$stmt = $conn->prepare($query, array(PDO::ATTR_CURSOR=>PDO::CURSOR_SCROLL, PDO::SQLSRV_ATTR_CURSOR_SCROLL_TYPE=>PDO::SQLSRV_CURSOR_BUFFERED));

// Fetch all fields as UTF-8 strings
for ($i = 0; $i < count($inputs); $i++) {
$stmt->execute();
Expand Down Expand Up @@ -145,14 +173,7 @@ function fetchCharAsInt($conn, $tableName, $column)
$stmt->bindColumn($column, $value, PDO::PARAM_INT);
$row = $stmt->fetch(PDO::FETCH_BOUND);

// TODO 11297: fix this part outside Windows later
if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
echo "in fetchCharAsInt: exception should have been thrown!\n";
} else {
if ($value != 0) {
var_dump($value);
}
}
echo "in fetchCharAsInt: exception should have been thrown!\n";
} catch (PdoException $e) {
// The (n)varchar field - expect the outOfRange error
if (strpos($e->getMessage(), $outOfRange) === false) {
Expand Down Expand Up @@ -194,6 +215,35 @@ function fetchAsNumerics($conn, $tableName, $inputs)
}
}

function fetchNumbers($conn, $tableName, $inputs)
{
// Fetch integers and floats as numbers, not strings
try {
$query = "SELECT c2, c3, c4 FROM $tableName";
$conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);

$stmt = $conn->prepare($query, array(PDO::ATTR_CURSOR=>PDO::CURSOR_SCROLL, PDO::SQLSRV_ATTR_CURSOR_SCROLL_TYPE=>PDO::SQLSRV_CURSOR_BUFFERED));
$stmt->setAttribute(PDO::SQLSRV_ATTR_FETCHES_NUMERIC_TYPE, true);
$stmt->execute();

$row = $stmt->fetch(PDO::FETCH_NUM);
if ($row[0] !== intval($inputs[1])) {
var_dump($row[0]);
}
$expected = floatval($inputs[2]);
if (!compareFloats($expected, $row[1])) {
echo "in fetchNumbers: expected $expected but got: ";
var_dump($row[1]);
}
if ($row[2] !== $inputs[3]) {
var_dump($row[2]);
}
} catch (PdoException $e) {
echo "Caught exception in fetchAsNumerics:\n";
echo $e->getMessage() . PHP_EOL;
}
}

try {
$conn = connect();
$conn->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, false);
Expand Down Expand Up @@ -226,11 +276,13 @@ try {
unset($stmt);

// Starting fetching using client buffers
fetchAsChar($conn, $tableName, $inputs);
fetchAsUTF8($conn, $tableName, $inputs);
fetchArray($conn, $tableName, $inputs);
fetchBinaryAsNumber($conn, $tableName, $inputs);
fetchBinaryAsBinary($conn, $tableName, $inputs);
fetchAsNumerics($conn, $tableName, $inputs);
fetchNumbers($conn, $tableName, $inputs);

// dropTable($conn, $tableName);
echo "Done\n";
Expand Down
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