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author | Devtools Arcadia <arcadia-devtools@yandex-team.ru> | 2022-02-07 18:08:42 +0300 |
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committer | Devtools Arcadia <arcadia-devtools@mous.vla.yp-c.yandex.net> | 2022-02-07 18:08:42 +0300 |
commit | 1110808a9d39d4b808aef724c861a2e1a38d2a69 (patch) | |
tree | e26c9fed0de5d9873cce7e00bc214573dc2195b7 /contrib/libs/poco/Foundation/include/Poco/DateTimeParser.h | |
download | ydb-1110808a9d39d4b808aef724c861a2e1a38d2a69.tar.gz |
intermediate changes
ref:cde9a383711a11544ce7e107a78147fb96cc4029
Diffstat (limited to 'contrib/libs/poco/Foundation/include/Poco/DateTimeParser.h')
-rw-r--r-- | contrib/libs/poco/Foundation/include/Poco/DateTimeParser.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/contrib/libs/poco/Foundation/include/Poco/DateTimeParser.h b/contrib/libs/poco/Foundation/include/Poco/DateTimeParser.h new file mode 100644 index 0000000000..28ebbe7562 --- /dev/null +++ b/contrib/libs/poco/Foundation/include/Poco/DateTimeParser.h @@ -0,0 +1,116 @@ +// +// DateTimeParser.h +// +// Library: Foundation +// Package: DateTime +// Module: DateTimeParser +// +// Definition of the DateTimeParser class. +// +// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH. +// and Contributors. +// +// SPDX-License-Identifier: BSL-1.0 +// + + +#ifndef Foundation_DateTimeParser_INCLUDED +#define Foundation_DateTimeParser_INCLUDED + + +#include "Poco/Foundation.h" +#include "Poco/DateTime.h" + + +namespace Poco { + + +class Foundation_API DateTimeParser + /// This class provides a method for parsing dates and times + /// from strings. All parsing methods do their best to + /// parse a meaningful result, even from malformed input + /// strings. + /// + /// The returned DateTime will always contain a time in the same + /// timezone as the time in the string. Call DateTime::makeUTC() + /// with the timeZoneDifferential returned by parse() to convert + /// the DateTime to UTC. + /// + /// Note: When parsing a time in 12-hour (AM/PM) format, the hour + /// (%h) must be parsed before the AM/PM designator (%a, %A), + /// otherwise the AM/PM designator will be ignored. + /// + /// See the DateTimeFormatter class for a list of supported format specifiers. + /// In addition to the format specifiers supported by DateTimeFormatter, an + /// additional specifier is supported: %r will parse a year given by either + /// two or four digits. Years 69-00 are interpreted in the 20th century + /// (1969-2000), years 01-68 in the 21th century (2001-2068). + /// + /// Note that in the current implementation all characters other than format specifiers in + /// the format string are ignored/not matched against the date/time string. This may + /// lead to non-error results even with nonsense input strings. + /// This may change in a future version to a more strict behavior. + /// If more strict format validation of date/time strings is required, a regular + /// expression could be used for initial validation, before passing the string + /// to DateTimeParser. +{ +public: + static void parse(const std::string& fmt, const std::string& str, DateTime& dateTime, int& timeZoneDifferential); + /// Parses a date and time in the given format from the given string. + /// Throws a SyntaxException if the string cannot be successfully parsed. + /// Please see DateTimeFormatter::format() for a description of the format string. + /// Class DateTimeFormat defines format strings for various standard date/time formats. + + static DateTime parse(const std::string& fmt, const std::string& str, int& timeZoneDifferential); + /// Parses a date and time in the given format from the given string. + /// Throws a SyntaxException if the string cannot be successfully parsed. + /// Please see DateTimeFormatter::format() for a description of the format string. + /// Class DateTimeFormat defines format strings for various standard date/time formats. + + static bool tryParse(const std::string& fmt, const std::string& str, DateTime& dateTime, int& timeZoneDifferential); + /// Parses a date and time in the given format from the given string. + /// Returns true if the string has been successfully parsed, false otherwise. + /// Please see DateTimeFormatter::format() for a description of the format string. + /// Class DateTimeFormat defines format strings for various standard date/time formats. + + static void parse(const std::string& str, DateTime& dateTime, int& timeZoneDifferential); + /// Parses a date and time from the given dateTime string. Before parsing, the method + /// examines the dateTime string for a known date/time format. + /// Throws a SyntaxException if the string cannot be successfully parsed. + /// Please see DateTimeFormatter::format() for a description of the format string. + /// Class DateTimeFormat defines format strings for various standard date/time formats. + + static DateTime parse(const std::string& str, int& timeZoneDifferential); + /// Parses a date and time from the given dateTime string. Before parsing, the method + /// examines the dateTime string for a known date/time format. + /// Please see DateTimeFormatter::format() for a description of the format string. + /// Class DateTimeFormat defines format strings for various standard date/time formats. + + static bool tryParse(const std::string& str, DateTime& dateTime, int& timeZoneDifferential); + /// Parses a date and time from the given dateTime string. Before parsing, the method + /// examines the dateTime string for a known date/time format. + /// Please see DateTimeFormatter::format() for a description of the format string. + /// Class DateTimeFormat defines format strings for various standard date/time formats. + + static int parseMonth(std::string::const_iterator& it, const std::string::const_iterator& end); + /// Tries to interpret the given range as a month name. The range must be at least + /// three characters long. + /// Returns the month number (1 .. 12) if the month name is valid. Otherwise throws + /// a SyntaxException. + + static int parseDayOfWeek(std::string::const_iterator& it, const std::string::const_iterator& end); + /// Tries to interpret the given range as a weekday name. The range must be at least + /// three characters long. + /// Returns the weekday number (0 .. 6, where 0 = Synday, 1 = Monday, etc.) if the + /// weekday name is valid. Otherwise throws a SyntaxException. + +protected: + static int parseTZD(std::string::const_iterator& it, const std::string::const_iterator& end); + static int parseAMPM(std::string::const_iterator& it, const std::string::const_iterator& end, int hour); +}; + + +} // namespace Poco + + +#endif // Foundation_DateTimeParser_INCLUDED |