public static void FormatDecimal(StringBuffer formatter, uint* value, StringView specifier, CachedCulture culture)
{
int digits;
var fmt = ParseFormatSpecifier(specifier, out digits);
var number = new Number();
var buffer = stackalloc char[MaxNumberDigits + 1];
number.Digits = buffer;
DecimalToNumber(value, ref number);
if (fmt != 0)
NumberToString(formatter, ref number, fmt, digits, culture, isDecimal: true);
else
NumberToCustomFormatString(formatter, ref number, specifier, culture);
}
public static void FormatDouble(StringBuffer formatter, double value, StringView specifier, CachedCulture culture)
{
int digits;
int precision = DoublePrecision;
var fmt = ParseFormatSpecifier(specifier, out digits);
// ANDing with 0xFFDF has the effect of uppercasing the character
switch (fmt & 0xFFDF) {
case 'G':
if (digits > 15)
precision = 17;
break;
case 'E':
if (digits > 14)
precision = 17;
break;
}
var number = new Number();
var buffer = stackalloc char[MaxFloatingDigits + 1];
number.Digits = buffer;
DoubleToNumber(value, precision, ref number);
if (number.Scale == ScaleNaN) {
formatter.Append(culture.NaN);
return;
}
if (number.Scale == ScaleInf) {
if (number.Sign > 0)
formatter.Append(culture.NegativeInfinity);
else
formatter.Append(culture.PositiveInfinity);
return;
}
if (fmt != 0)
NumberToString(formatter, ref number, fmt, digits, culture);
else
NumberToCustomFormatString(formatter, ref number, specifier, culture);
}
static void NumberToCustomFormatString(StringBuffer formatter, ref Number number, StringView specifier, CachedCulture culture)
{
}
public static void FormatSByte(StringBuffer formatter, sbyte value, StringView specifier, CachedCulture culture)
{
if (value < 0 && !specifier.IsEmpty)
{
// if we're negative and doing a hex format, mask out the bits for the conversion
char c = specifier.Data[0];
if (c == 'X' || c == 'x')
{
FormatUInt32(formatter, (uint)(value & 0xFF), specifier, culture);
return;
}
}
FormatInt32(formatter, value, specifier, culture);
}
public static void FormatUInt32(StringBuffer formatter, uint value, StringView specifier, CachedCulture culture)
{
int digits;
var fmt = ParseFormatSpecifier(specifier, out digits);
// ANDing with 0xFFDF has the effect of uppercasing the character
switch (fmt & 0xFFDF)
{
case 'G':
if (digits > 0)
{
goto default;
}
else
{
goto case 'D';
}
case 'D':
UInt32ToDecStr(formatter, value, digits);
break;
case 'X':
// fmt-('X'-'A'+1) gives us the base hex character in either
// uppercase or lowercase, depending on the casing of fmt
Int32ToHexStr(formatter, value, fmt - ('X' - 'A' + 10), digits);
break;
default:
var number = new Number();
var buffer = stackalloc char[MaxNumberDigits + 1];
number.Digits = buffer;
UInt32ToNumber(value, ref number);
if (fmt != 0)
{
NumberToString(formatter, ref number, fmt, digits, culture);
}
else
{
NumberToCustomFormatString(formatter, ref number, specifier, culture);
}
break;
}
}
static void NumberToString(StringBuffer formatter, ref Number number, char format, int maxDigits, CachedCulture culture, bool isDecimal = false)
{
// ANDing with 0xFFDF has the effect of uppercasing the character
switch (format & 0xFFDF)
{
case 'C':
{
var cultureData = culture.CurrencyData;
var bufferSize = cultureData.GetBufferSize(ref maxDigits, number.Scale);
RoundNumber(ref number, number.Scale + maxDigits);
var buffer = stackalloc char[bufferSize];
var ptr = FormatCurrency(
buffer,
ref number,
maxDigits,
cultureData,
number.Sign > 0 ? culture.CurrencyNegativePattern : culture.CurrencyPositivePattern,
culture.CurrencySymbol
);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
case 'F':
{
var cultureData = culture.FixedData;
var bufferSize = cultureData.GetBufferSize(ref maxDigits, number.Scale);
RoundNumber(ref number, number.Scale + maxDigits);
var buffer = stackalloc char[bufferSize];
var ptr = buffer;
if (number.Sign > 0)
{
AppendString(&ptr, cultureData.NegativeSign);
}
ptr = FormatFixed(ptr, ref number, maxDigits, cultureData);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
case 'N':
{
var cultureData = culture.NumberData;
var bufferSize = cultureData.GetBufferSize(ref maxDigits, number.Scale);
RoundNumber(ref number, number.Scale + maxDigits);
var buffer = stackalloc char[bufferSize];
var ptr = FormatNumber(
buffer,
ref number,
maxDigits,
number.Sign > 0 ? culture.NumberNegativePattern : culture.NumberPositivePattern,
cultureData
);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
case 'E':
{
var cultureData = culture.ScientificData;
var bufferSize = cultureData.GetBufferSize(ref maxDigits, number.Scale);
maxDigits++;
RoundNumber(ref number, maxDigits);
var buffer = stackalloc char[bufferSize];
var ptr = buffer;
if (number.Sign > 0)
{
AppendString(&ptr, cultureData.NegativeSign);
}
ptr = FormatScientific(
ptr,
ref number,
maxDigits,
format, // TODO: fix casing
cultureData.DecimalSeparator,
culture.PositiveSign,
culture.NegativeSign
);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
case 'P':
{
number.Scale += 2;
var cultureData = culture.PercentData;
var bufferSize = cultureData.GetBufferSize(ref maxDigits, number.Scale);
RoundNumber(ref number, number.Scale + maxDigits);
var buffer = stackalloc char[bufferSize];
var ptr = FormatPercent(
buffer,
ref number,
maxDigits,
cultureData,
number.Sign > 0 ? culture.PercentNegativePattern : culture.PercentPositivePattern,
culture.PercentSymbol
);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
case 'G':
{
var enableRounding = true;
if (maxDigits < 1)
{
if (isDecimal && maxDigits == -1)
{
// if we're formatting a decimal, default to 29 digits precision
// only for G formatting without a precision specifier
maxDigits = DecimalPrecision;
enableRounding = false;
}
else
{
maxDigits = number.Precision;
}
}
var bufferSize = maxDigits + culture.DecimalBufferSize;
var buffer = stackalloc char[bufferSize];
var ptr = buffer;
// round for G formatting only if a precision is given
// we need to handle the minus zero case also
if (enableRounding)
{
RoundNumber(ref number, maxDigits);
}
else if (isDecimal && number.Digits[0] == 0)
{
number.Sign = 0;
}
if (number.Sign > 0)
{
AppendString(&ptr, culture.NegativeSign);
}
ptr = FormatGeneral(
ptr,
ref number,
maxDigits,
(char)(format - ('G' - 'E')),
culture.NumberData.DecimalSeparator,
culture.PositiveSign,
culture.NegativeSign,
!enableRounding
);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
default:
throw new FormatException(string.Format(SR.UnknownFormatSpecifier, format));
}
}
public static void FormatDecimal(StringBuffer formatter, uint *value, StringView specifier, CachedCulture culture)
{
int digits;
var fmt = ParseFormatSpecifier(specifier, out digits);
var number = new Number();
var buffer = stackalloc char[MaxNumberDigits + 1];
number.Digits = buffer;
DecimalToNumber(value, ref number);
if (fmt != 0)
{
NumberToString(formatter, ref number, fmt, digits, culture, isDecimal: true);
}
else
{
NumberToCustomFormatString(formatter, ref number, specifier, culture);
}
}
public static void FormatDouble(StringBuffer formatter, double value, StringView specifier, CachedCulture culture)
{
int digits;
int precision = DoublePrecision;
var fmt = ParseFormatSpecifier(specifier, out digits);
// ANDing with 0xFFDF has the effect of uppercasing the character
switch (fmt & 0xFFDF)
{
case 'G':
if (digits > 15)
{
precision = 17;
}
break;
case 'E':
if (digits > 14)
{
precision = 17;
}
break;
}
var number = new Number();
var buffer = stackalloc char[MaxFloatingDigits + 1];
number.Digits = buffer;
DoubleToNumber(value, precision, ref number);
if (number.Scale == ScaleNaN)
{
formatter.Append(culture.NaN);
return;
}
if (number.Scale == ScaleInf)
{
if (number.Sign > 0)
{
formatter.Append(culture.NegativeInfinity);
}
else
{
formatter.Append(culture.PositiveInfinity);
}
return;
}
if (fmt != 0)
{
NumberToString(formatter, ref number, fmt, digits, culture);
}
else
{
NumberToCustomFormatString(formatter, ref number, specifier, culture);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="StringBuffer"/> class.
/// </summary>
/// <param name="capacity">The initial size of the string buffer.</param>
public StringBuffer(int capacity)
{
buffer = new char[capacity];
culture = CachedCurrentCulture;
}
static void NumberToCustomFormatString(StringBuffer formatter, ref Number number, StringView specifier, CachedCulture culture)
{
}
public static void FormatInt16(StringBuffer formatter, short value, StringView specifier, CachedCulture culture)
{
if (value < 0 && !specifier.IsEmpty) {
// if we're negative and doing a hex format, mask out the bits for the conversion
char c = specifier.Data[0];
if (c == 'X' || c == 'x')
FormatUInt32(formatter, (uint)(value & 0xFFFF), specifier, culture);
}
FormatInt32(formatter, value, specifier, culture);
}
static void NumberToString(StringBuffer formatter, ref Number number, char format, int maxDigits, CachedCulture culture, bool isDecimal = false)
{
// ANDing with 0xFFDF has the effect of uppercasing the character
switch (format & 0xFFDF) {
case 'C':
{
var cultureData = culture.CurrencyData;
var bufferSize = cultureData.GetBufferSize(ref maxDigits, number.Scale);
RoundNumber(ref number, number.Scale + maxDigits);
var buffer = stackalloc char[bufferSize];
var ptr = FormatCurrency(
buffer,
ref number,
maxDigits,
cultureData,
number.Sign > 0 ? culture.CurrencyNegativePattern : culture.CurrencyPositivePattern,
culture.CurrencySymbol
);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
case 'F':
{
var cultureData = culture.FixedData;
var bufferSize = cultureData.GetBufferSize(ref maxDigits, number.Scale);
RoundNumber(ref number, number.Scale + maxDigits);
var buffer = stackalloc char[bufferSize];
var ptr = buffer;
if (number.Sign > 0)
AppendString(&ptr, cultureData.NegativeSign);
ptr = FormatFixed(ptr, ref number, maxDigits, cultureData);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
case 'N':
{
var cultureData = culture.NumberData;
var bufferSize = cultureData.GetBufferSize(ref maxDigits, number.Scale);
RoundNumber(ref number, number.Scale + maxDigits);
var buffer = stackalloc char[bufferSize];
var ptr = FormatNumber(
buffer,
ref number,
maxDigits,
number.Sign > 0 ? culture.NumberNegativePattern : culture.NumberPositivePattern,
cultureData
);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
case 'E':
{
var cultureData = culture.ScientificData;
var bufferSize = cultureData.GetBufferSize(ref maxDigits, number.Scale);
maxDigits++;
RoundNumber(ref number, maxDigits);
var buffer = stackalloc char[bufferSize];
var ptr = buffer;
if (number.Sign > 0)
AppendString(&ptr, cultureData.NegativeSign);
ptr = FormatScientific(
ptr,
ref number,
maxDigits,
format, // TODO: fix casing
cultureData.DecimalSeparator,
culture.PositiveSign,
culture.NegativeSign
);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
case 'P':
{
number.Scale += 2;
var cultureData = culture.PercentData;
var bufferSize = cultureData.GetBufferSize(ref maxDigits, number.Scale);
RoundNumber(ref number, number.Scale + maxDigits);
var buffer = stackalloc char[bufferSize];
var ptr = FormatPercent(
buffer,
ref number,
maxDigits,
cultureData,
number.Sign > 0 ? culture.PercentNegativePattern : culture.PercentPositivePattern,
culture.PercentSymbol
);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
case 'G':
{
var enableRounding = true;
if (maxDigits < 1) {
if (isDecimal && maxDigits == -1) {
// if we're formatting a decimal, default to 29 digits precision
// only for G formatting without a precision specifier
maxDigits = DecimalPrecision;
enableRounding = false;
}
else
maxDigits = number.Precision;
}
var bufferSize = maxDigits + culture.DecimalBufferSize;
var buffer = stackalloc char[bufferSize];
var ptr = buffer;
// round for G formatting only if a precision is given
// we need to handle the minus zero case also
if (enableRounding)
RoundNumber(ref number, maxDigits);
else if (isDecimal && number.Digits[0] == 0)
number.Sign = 0;
if (number.Sign > 0)
AppendString(&ptr, culture.NegativeSign);
ptr = FormatGeneral(
ptr,
ref number,
maxDigits,
(char)(format - ('G' - 'E')),
culture.NumberData.DecimalSeparator,
culture.PositiveSign,
culture.NegativeSign,
!enableRounding
);
formatter.Append(buffer, (int)(ptr - buffer));
break;
}
default:
throw new FormatException(string.Format(SR.UnknownFormatSpecifier, format));
}
}
public static void FormatUInt64(StringBuffer formatter, ulong value, StringView specifier, CachedCulture culture)
{
int digits;
var fmt = ParseFormatSpecifier(specifier, out digits);
// ANDing with 0xFFDF has the effect of uppercasing the character
switch (fmt & 0xFFDF) {
case 'G':
if (digits > 0)
goto default;
else
goto case 'D';
case 'D':
UInt64ToDecStr(formatter, value, digits);
break;
case 'X':
// fmt-('X'-'A'+1) gives us the base hex character in either
// uppercase or lowercase, depending on the casing of fmt
Int64ToHexStr(formatter, value, fmt - ('X' - 'A' + 10), digits);
break;
default:
var number = new Number();
var buffer = stackalloc char[MaxNumberDigits + 1];
number.Digits = buffer;
UInt64ToNumber(value, ref number);
if (fmt != 0)
NumberToString(formatter, ref number, fmt, digits, culture);
else
NumberToCustomFormatString(formatter, ref number, specifier, culture);
break;
}
}
