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This commit is contained in:
Tim Chevalier 2024-06-18 12:59:41 -07:00
parent 002f9b2425
commit 4b6f5171b9
1 changed files with 17 additions and 10 deletions
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27
icu4c/source/i18n/messageformat2_function_registry.cpp
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@ -1040,6 +1040,7 @@ static UDate tryTimeZonePatterns(const UnicodeString& sourceStr, UErrorCode& err
return d;
}
// Parse a string like [+-]nn:nn to a time zone
SimpleTimeZone* createTimeZonePart(const UnicodeString& offsetStr, UErrorCode& errorCode) {
NULL_ON_ERROR(errorCode);
@ -1057,6 +1058,7 @@ SimpleTimeZone* createTimeZonePart(const UnicodeString& offsetStr, UErrorCode& e
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
return nullptr;
}
// Split string into hour and minute parts and parse each part as a double
UnicodeString tzPart1 = offsetStr.tempSubString(1, indexOfColon);
UnicodeString tzPart2 = offsetStr.tempSubString(indexOfColon + 1, len);
double tzHour, tzMin;
@ -1066,6 +1068,7 @@ SimpleTimeZone* createTimeZonePart(const UnicodeString& offsetStr, UErrorCode& e
errorCode = U_ILLEGAL_ARGUMENT_ERROR;
return nullptr;
}
// Create integer offset from parsed parts
int32_t offset = sign * (static_cast<int32_t>(tzHour) * 60 + static_cast<int32_t>(tzMin)) * 60 * 1000;
LocalPointer<SimpleTimeZone> tz(new SimpleTimeZone(offset, UnicodeString("GMT") + offsetStr));
if (!tz.isValid()) {
@ -1093,7 +1096,7 @@ static DateInfo createDateInfoFromString(const UnicodeString& sourceStr, UErrorC
UDate absoluteDate;
// Try time zone part
// Check if the string has a time zone part
int32_t indexOfZ = sourceStr.indexOf('Z');
int32_t indexOfPlus = sourceStr.lastIndexOf('+');
int32_t indexOfMinus = sourceStr.lastIndexOf('-');
@ -1102,33 +1105,37 @@ static DateInfo createDateInfoFromString(const UnicodeString& sourceStr, UErrorC
bool isGMT = indexOfZ > 0;
UnicodeString offsetPart;
bool hasTimeZone = isTzOffset || isGMT;
if (!hasTimeZone) {
// No time zone
// No time zone; parse the date and time
absoluteDate = tryPatterns(sourceStr, errorCode);
} else {
// Try to split into time zone and non-time-zone parts
UnicodeString noTimeZone;
UnicodeString dateTimePart;
if (isGMT) {
noTimeZone = sourceStr.tempSubString(0, indexOfZ);
dateTimePart = sourceStr.tempSubString(0, indexOfZ);
} else {
noTimeZone = sourceStr.tempSubString(0, indexOfSign);
dateTimePart = sourceStr.tempSubString(0, indexOfSign);
}
tryPatterns(noTimeZone, errorCode);
// Parse the date from the date/time part
tryPatterns(dateTimePart, errorCode);
// Failure -- can't parse this string
if (U_FAILURE(errorCode)) {
return {};
}
// Success -- now handle the time zone part
// Success -- now parse the time zone part
if (isGMT) {
noTimeZone += UnicodeString("GMT");
absoluteDate = tryTimeZonePatterns(noTimeZone, errorCode);
dateTimePart += UnicodeString("GMT");
absoluteDate = tryTimeZonePatterns(dateTimePart, errorCode);
} else {
// Finally, try [+-]nn:nn
// Try to parse time zone in offset format: [+-]nn:nn
absoluteDate = tryTimeZonePatterns(sourceStr, errorCode);
offsetPart = sourceStr.tempSubString(indexOfSign, sourceStr.length());
}
}
// Create a TimeZone from the parsed time zone, in order to get a canonical
// ID for the time zone
const TimeZone* tz;
if (hasTimeZone) {
if (isGMT) {