private static bool DoStrictParse(string s, string formatParam, DateTimeStyles styles, DateTimeFormatInfo dtfi, ref DateTimeResult result)
{
ParsingInfo parsingInfo = default(ParsingInfo);
parsingInfo.Init();
parsingInfo.calendar = dtfi.Calendar;
parsingInfo.fAllowInnerWhite = ((styles & DateTimeStyles.AllowInnerWhite) != DateTimeStyles.None);
parsingInfo.fAllowTrailingWhite = ((styles & DateTimeStyles.AllowTrailingWhite) != DateTimeStyles.None);
if (formatParam.Length == 1)
{
if ((result.flags & ParseFlags.CaptureOffset) != (ParseFlags)0 && formatParam[0] == 'U')
{
result.SetFailure(ParseFailureKind.Format, "Format_BadFormatSpecifier", null);
return false;
}
formatParam = DateTimeParse.ExpandPredefinedFormat(formatParam, ref dtfi, ref parsingInfo, ref result);
}
result.calendar = parsingInfo.calendar;
if (parsingInfo.calendar.ID == 8)
{
parsingInfo.parseNumberDelegate = DateTimeParse.m_hebrewNumberParser;
parsingInfo.fCustomNumberParser = true;
}
result.Hour = (result.Minute = (result.Second = -1));
__DTString _DTString = new __DTString(formatParam, dtfi, false);
__DTString _DTString2 = new __DTString(s, dtfi, false);
if (parsingInfo.fAllowTrailingWhite)
{
_DTString.TrimTail();
_DTString.RemoveTrailingInQuoteSpaces();
_DTString2.TrimTail();
}
if ((styles & DateTimeStyles.AllowLeadingWhite) != DateTimeStyles.None)
{
_DTString.SkipWhiteSpaces();
_DTString.RemoveLeadingInQuoteSpaces();
_DTString2.SkipWhiteSpaces();
}
while (_DTString.GetNext())
{
if (parsingInfo.fAllowInnerWhite)
{
_DTString2.SkipWhiteSpaces();
}
if (!DateTimeParse.ParseByFormat(ref _DTString2, ref _DTString, ref parsingInfo, dtfi, ref result))
{
return false;
}
}
if (_DTString2.Index < _DTString2.Value.Length - 1)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (parsingInfo.fUseTwoDigitYear && (dtfi.FormatFlags & DateTimeFormatFlags.UseHebrewRule) == DateTimeFormatFlags.None)
{
if (result.Year >= 100)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.Year = parsingInfo.calendar.ToFourDigitYear(result.Year);
}
if (parsingInfo.fUseHour12)
{
if (parsingInfo.timeMark == DateTimeParse.TM.NotSet)
{
parsingInfo.timeMark = DateTimeParse.TM.AM;
}
if (result.Hour > 12)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (parsingInfo.timeMark == DateTimeParse.TM.AM)
{
if (result.Hour == 12)
{
result.Hour = 0;
}
}
else
{
result.Hour = ((result.Hour == 12) ? 12 : (result.Hour + 12));
}
}
else
{
if ((parsingInfo.timeMark == DateTimeParse.TM.AM && result.Hour >= 12) || (parsingInfo.timeMark == DateTimeParse.TM.PM && result.Hour < 12))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
}
bool flag = result.Year == -1 && result.Month == -1 && result.Day == -1;
if (!DateTimeParse.CheckDefaultDateTime(ref result, ref parsingInfo.calendar, styles))
{
return false;
}
if (!flag && dtfi.HasYearMonthAdjustment && !dtfi.YearMonthAdjustment(ref result.Year, ref result.Month, (result.flags & ParseFlags.ParsedMonthName) != (ParseFlags)0))
{
result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
return false;
}
if (!parsingInfo.calendar.TryToDateTime(result.Year, result.Month, result.Day, result.Hour, result.Minute, result.Second, 0, result.era, out result.parsedDate))
{
result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
return false;
}
if (result.fraction > 0.0)
{
result.parsedDate = result.parsedDate.AddTicks((long)Math.Round(result.fraction * 10000000.0));
}
if (parsingInfo.dayOfWeek != -1 && parsingInfo.dayOfWeek != (int)parsingInfo.calendar.GetDayOfWeek(result.parsedDate))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDayOfWeek", null);
return false;
}
return DateTimeParse.DetermineTimeZoneAdjustments(ref result, styles, flag);
}
private static bool DoStrictParse(string s, string formatParam, DateTimeStyles styles, DateTimeFormatInfo dtfi, ref DateTimeResult result)
{
bool bTimeOnly = false;
ParsingInfo parseInfo = new ParsingInfo();
parseInfo.Init();
parseInfo.calendar = dtfi.Calendar;
parseInfo.fAllowInnerWhite = (styles & DateTimeStyles.AllowInnerWhite) != DateTimeStyles.None;
parseInfo.fAllowTrailingWhite = (styles & DateTimeStyles.AllowTrailingWhite) != DateTimeStyles.None;
if (formatParam.Length == 1)
{
if (((result.flags & ParseFlags.CaptureOffset) != 0) && (formatParam[0] == 'U'))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadFormatSpecifier", null);
return false;
}
formatParam = ExpandPredefinedFormat(formatParam, ref dtfi, ref parseInfo, ref result);
}
result.calendar = parseInfo.calendar;
if (parseInfo.calendar.ID == 8)
{
parseInfo.parseNumberDelegate = m_hebrewNumberParser;
parseInfo.fCustomNumberParser = true;
}
result.Hour = result.Minute = result.Second = -1;
__DTString format = new __DTString(formatParam, dtfi, false);
__DTString str = new __DTString(s, dtfi, false);
if (parseInfo.fAllowTrailingWhite)
{
format.TrimTail();
format.RemoveTrailingInQuoteSpaces();
str.TrimTail();
}
if ((styles & DateTimeStyles.AllowLeadingWhite) != DateTimeStyles.None)
{
format.SkipWhiteSpaces();
format.RemoveLeadingInQuoteSpaces();
str.SkipWhiteSpaces();
}
while (format.GetNext())
{
if (parseInfo.fAllowInnerWhite)
{
str.SkipWhiteSpaces();
}
if (!ParseByFormat(ref str, ref format, ref parseInfo, dtfi, ref result))
{
return false;
}
}
if (str.Index < (str.Value.Length - 1))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (parseInfo.fUseTwoDigitYear && ((dtfi.FormatFlags & DateTimeFormatFlags.UseHebrewRule) == DateTimeFormatFlags.None))
{
if (result.Year >= 100)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
result.Year = parseInfo.calendar.ToFourDigitYear(result.Year);
}
if (parseInfo.fUseHour12)
{
if (parseInfo.timeMark == TM.NotSet)
{
parseInfo.timeMark = TM.AM;
}
if (result.Hour > 12)
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (parseInfo.timeMark == TM.AM)
{
if (result.Hour == 12)
{
result.Hour = 0;
}
}
else
{
result.Hour = (result.Hour == 12) ? 12 : (result.Hour + 12);
}
}
bTimeOnly = ((result.Year == -1) && (result.Month == -1)) && (result.Day == -1);
if (!CheckDefaultDateTime(ref result, ref parseInfo.calendar, styles))
{
return false;
}
if ((!bTimeOnly && dtfi.HasYearMonthAdjustment) && !dtfi.YearMonthAdjustment(ref result.Year, ref result.Month, (result.flags & ParseFlags.ParsedMonthName) != 0))
{
result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
return false;
}
if (!parseInfo.calendar.TryToDateTime(result.Year, result.Month, result.Day, result.Hour, result.Minute, result.Second, 0, result.era, out result.parsedDate))
{
result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
return false;
}
if (result.fraction > 0.0)
{
result.parsedDate = result.parsedDate.AddTicks((long) Math.Round((double) (result.fraction * 10000000.0)));
}
if ((parseInfo.dayOfWeek != -1) && (parseInfo.dayOfWeek != parseInfo.calendar.GetDayOfWeek(result.parsedDate)))
{
result.SetFailure(ParseFailureKind.Format, "Format_BadDayOfWeek", null);
return false;
}
if (!DetermineTimeZoneAdjustments(ref result, styles, bTimeOnly))
{
return false;
}
return true;
}
/*=================================DoStrictParse==================================
**Action: Do DateTime parsing using the format in formatParam.
**Returns: The parsed DateTime.
**Arguments:
**Exceptions:
**
**Notes:
** When the following general formats are used, InvariantInfo is used in dtfi:
** 'r', 'R', 's'.
** When the following general formats are used, the time is assumed to be in Universal time.
**
**Limitations:
** Only GregarianCalendar is supported for now.
** Only support GMT timezone.
==============================================================================*/
private static bool DoStrictParse(
String s,
String formatParam,
DateTimeStyles styles,
DateTimeFormatInfo dtfi,
ref DateTimeResult result) {
ParsingInfo parseInfo = new ParsingInfo();
parseInfo.Init();
parseInfo.calendar = dtfi.Calendar;
parseInfo.fAllowInnerWhite = ((styles & DateTimeStyles.AllowInnerWhite) != 0);
parseInfo.fAllowTrailingWhite = ((styles & DateTimeStyles.AllowTrailingWhite) != 0);
// We need the original values of the following two below.
String originalFormat = formatParam;
if (formatParam.Length == 1) {
if (((result.flags & ParseFlags.CaptureOffset) != 0) && formatParam[0] == 'U') {
// The 'U' format is not allowed for DateTimeOffset
result.SetFailure(ParseFailureKind.Format, "Format_BadFormatSpecifier", null);
return false;
}
formatParam = ExpandPredefinedFormat(formatParam, ref dtfi, ref parseInfo, ref result);
}
bool bTimeOnly = false;
result.calendar = parseInfo.calendar;
if (parseInfo.calendar.ID == Calendar.CAL_HEBREW) {
parseInfo.parseNumberDelegate = m_hebrewNumberParser;
parseInfo.fCustomNumberParser = true;
}
// Reset these values to negative one so that we could throw exception
// if we have parsed every item twice.
result.Hour = result.Minute = result.Second = -1;
__DTString format = new __DTString(formatParam, dtfi, false);
__DTString str = new __DTString(s, dtfi, false);
if (parseInfo.fAllowTrailingWhite) {
// Trim trailing spaces if AllowTrailingWhite.
format.TrimTail();
format.RemoveTrailingInQuoteSpaces();
str.TrimTail();
}
if ((styles & DateTimeStyles.AllowLeadingWhite) != 0) {
format.SkipWhiteSpaces();
format.RemoveLeadingInQuoteSpaces();
str.SkipWhiteSpaces();
}
//
// Scan every character in format and match the pattern in str.
//
while (format.GetNext()) {
// We trim inner spaces here, so that we will not eat trailing spaces when
// AllowTrailingWhite is not used.
if (parseInfo.fAllowInnerWhite) {
str.SkipWhiteSpaces();
}
if (!ParseByFormat(ref str, ref format, ref parseInfo, dtfi, ref result)) {
return (false);
}
}
if (str.Index < str.Value.Length - 1) {
// There are still remaining character in str.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (parseInfo.fUseTwoDigitYear && ((dtfi.FormatFlags & DateTimeFormatFlags.UseHebrewRule) == 0)) {
// A two digit year value is expected. Check if the parsed year value is valid.
if (result.Year >= 100) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
try {
result.Year = parseInfo.calendar.ToFourDigitYear(result.Year);
}
catch (ArgumentOutOfRangeException e) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", e);
return false;
}
}
if (parseInfo.fUseHour12) {
if (parseInfo.timeMark == TM.NotSet) {
// hh is used, but no AM/PM designator is specified.
// Assume the time is AM.
// Don't throw exceptions in here becasue it is very confusing for the caller.
// I always got confused myself when I use "hh:mm:ss" to parse a time string,
// and ParseExact() throws on me (because I didn't use the 24-hour clock 'HH').
parseInfo.timeMark = TM.AM;
}
if (result.Hour > 12) {
// AM/PM is used, but the value for HH is too big.
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
if (parseInfo.timeMark == TM.AM) {
if (result.Hour == 12) {
result.Hour = 0;
}
} else {
result.Hour = (result.Hour == 12) ? 12 : result.Hour + 12;
}
}
else
{
// Military (24-hour time) mode
//
// AM cannot be set with a 24-hour time like 17:15.
// PM cannot be set with a 24-hour time like 03:15.
if ( (parseInfo.timeMark == TM.AM && result.Hour >= 12)
||(parseInfo.timeMark == TM.PM && result.Hour < 12)) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDateTime", null);
return false;
}
}
// Check if the parased string only contains hour/minute/second values.
bTimeOnly = (result.Year == -1 && result.Month == -1 && result.Day == -1);
if (!CheckDefaultDateTime(ref result, ref parseInfo.calendar, styles)) {
return false;
}
if (!bTimeOnly && dtfi.HasYearMonthAdjustment) {
if (!dtfi.YearMonthAdjustment(ref result.Year, ref result.Month, ((result.flags & ParseFlags.ParsedMonthName) != 0))) {
result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
return false;
}
}
if (!parseInfo.calendar.TryToDateTime(result.Year, result.Month, result.Day,
result.Hour, result.Minute, result.Second, 0, result.era, out result.parsedDate)) {
result.SetFailure(ParseFailureKind.FormatBadDateTimeCalendar, "Format_BadDateTimeCalendar", null);
return false;
}
if (result.fraction > 0) {
result.parsedDate = result.parsedDate.AddTicks((long)Math.Round(result.fraction * Calendar.TicksPerSecond));
}
//
// We have to check day of week before we adjust to the time zone.
// It is because the value of day of week may change after adjusting
// to the time zone.
//
if (parseInfo.dayOfWeek != -1) {
//
// Check if day of week is correct.
//
if (parseInfo.dayOfWeek != (int)parseInfo.calendar.GetDayOfWeek(result.parsedDate)) {
result.SetFailure(ParseFailureKind.Format, "Format_BadDayOfWeek", null);
return false;
}
}
if (!DetermineTimeZoneAdjustments(ref result, styles, bTimeOnly)) {
return false;
}
return true;
}
/*=================================DoStrictParse==================================
**Action: Do DateTime parsing using the format in formatParam.
**Returns: The parsed DateTime.
**Arguments:
**Exceptions:
**
**Notes:
** When the following general formats are used, InvariantInfo is used in dtfi:
** 'r', 'R', 's'.
** When the following general formats are used, the time is assumed to be in Universal time.
**
**Limitations:
** Only GregarianCalendar is supported for now.
** Only support GMT timezone.
==============================================================================*/
private static bool DoStrictParse(
String s,
String formatParam,
DateTimeStyles styles,
DateTimeFormatInfo dtfi,
bool isThrowExp,
out DateTime returnValue) {
bool bTimeOnly = false;
returnValue = new DateTime();
ParsingInfo parseInfo = new ParsingInfo();
parseInfo.calendar = dtfi.Calendar;
parseInfo.fAllowInnerWhite = ((styles & DateTimeStyles.AllowInnerWhite) != 0);
parseInfo.fAllowTrailingWhite = ((styles & DateTimeStyles.AllowTrailingWhite) != 0);
if (formatParam.Length == 1) {
formatParam = ExpandPredefinedFormat(formatParam, ref dtfi, parseInfo);
}
DateTimeResult result = new DateTimeResult();
// Reset these values to negative one so that we could throw exception
// if we have parsed every item twice.
result.Hour = result.Minute = result.Second = -1;
__DTString format = new __DTString(formatParam);
__DTString str = new __DTString(s);
if (parseInfo.fAllowTrailingWhite) {
// Trim trailing spaces if AllowTrailingWhite.
format.TrimTail();
format.RemoveTrailingInQuoteSpaces();
str.TrimTail();
}
if ((styles & DateTimeStyles.AllowLeadingWhite) != 0) {
format.SkipWhiteSpaces();
format.RemoveLeadingInQuoteSpaces();
str.SkipWhiteSpaces();
}
//
// Scan every character in format and match the pattern in str.
//
while (format.GetNext()) {
// We trim inner spaces here, so that we will not eat trailing spaces when
// AllowTrailingWhite is not used.
if (parseInfo.fAllowInnerWhite) {
str.SkipWhiteSpaces();
}
if (!ParseByFormat(str, format, parseInfo, dtfi, isThrowExp, result) &&
!isThrowExp) {
return (false);
}
}
if (str.Index < str.Value.Length - 1) {
// There are still remaining character in str.
BCLDebug.Trace("NLS", "DateTimeParse.DoStrictParse(): Still characters in str, str.Index = ", str.Index);
return (ParseFormatError(isThrowExp, "Format_BadDateTime"));
}
if (parseInfo.fUseTwoDigitYear) {
// A two digit year value is expected. Check if the parsed year value is valid.
if (result.Year >= 100) {
BCLDebug.Trace("NLS", "DateTimeParse.DoStrictParse(): Invalid value for two-digit year");
return (ParseFormatError(isThrowExp, "Format_BadDateTime"));
}
result.Year = parseInfo.calendar.ToFourDigitYear(result.Year);
}
if (parseInfo.fUseHour12) {
if (parseInfo.timeMark == -1) {
// hh is used, but no AM/PM designator is specified.
// Assume the time is AM.
// Don't throw exceptions in here becasue it is very confusing for people.
// I always got confused myself when I use "hh:mm:ss" to parse a time string,
// and ParseExact() throws on me (because I didn't use the 24-hour clock 'HH').
parseInfo.timeMark = TM_AM;
BCLDebug.Trace("NLS", "DateTimeParse.DoStrictParse(): hh is used, but no AM/PM designator is specified.");
}
if (result.Hour > 12) {
// AM/PM is used, but the value for HH is too big.
BCLDebug.Trace("NLS", "DateTimeParse.DoStrictParse(): AM/PM is used, but the value for HH is too big.");
return (ParseFormatError(isThrowExp, "Format_BadDateTime"));
}
if (parseInfo.timeMark == TM_AM) {
if (result.Hour == 12) {
result.Hour = 0;
}
} else {
result.Hour = (result.Hour == 12) ? 12 : result.Hour + 12;
}
}
// Check if the parased string only contains hour/minute/second values.
bTimeOnly = (result.Year == -1 && result.Month == -1 && result.Day == -1);
CheckDefaultDateTime(result, ref parseInfo.calendar, styles);
try {
returnValue = parseInfo.calendar.ToDateTime(result.Year, result.Month, result.Day,
result.Hour, result.Minute, result.Second, 0, result.era);
if (result.fraction > 0) {
returnValue = returnValue.AddTicks((long)Math.Round(result.fraction * Calendar.TicksPerSecond));
}
} catch (ArgumentOutOfRangeException) {
return (ParseFormatError(isThrowExp, "Format_DateOutOfRange"));
} catch (Exception exp) {
if (isThrowExp) {
throw exp;
} else {
return (false);
}
}
//
// NOTENOTE :
// We have to check day of week before we adjust to the time zone.
// It is because the value of day of week may change after adjusting
// to the time zone.
//
if (parseInfo.dayOfWeek != -1) {
//
// Check if day of week is correct.
//
if (parseInfo.dayOfWeek != (int)parseInfo.calendar.GetDayOfWeek(returnValue)) {
BCLDebug.Trace("NLS", "DateTimeParse.DoStrictParse(): day of week is not correct");
return (ParseFormatError(isThrowExp, "Format_BadDayOfWeek"));
}
}
if (parseInfo.fUseTimeZone) {
if ((styles & DateTimeStyles.AdjustToUniversal) != 0) {
returnValue = AdjustTimeZoneToUniversal(returnValue, parseInfo.timeZoneOffset);
} else {
returnValue = AdjustTimeZoneToLocal(returnValue, parseInfo.timeZoneOffset, bTimeOnly);
}
} else if (parseInfo.fUseUniversalTime) {
try {
returnValue = returnValue.ToLocalTime();
} catch (ArgumentOutOfRangeException) {
return (ParseFormatError(isThrowExp, "Format_DateOutOfRange"));
}
}
return (true);
}