DateTimeParser.cpp File Reference

#include "DateTimeParser.h"
#include "StringTransform.h"
#include <boost/algorithm/string/predicate.hpp>
#include <algorithm>
#include <array>
#include <cctype>
#include <charconv>
#include <limits>
#include <sstream>
#include <vector>

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Namespaces
	anonymous_namespace{DateTimeParser.cpp}

Functions
int64_t	anonymous_namespace{DateTimeParser.cpp}::daysFromCivil (int64_t y, unsigned const m, unsigned const d)
std::vector< std::vector < std::string_view > >	anonymous_namespace{DateTimeParser.cpp}::formatViews ()
void	anonymous_namespace{DateTimeParser.cpp}::eatMonth (unsigned const month, std::string_view &str)
void	anonymous_namespace{DateTimeParser.cpp}::eatSpace (std::string_view &str)
template<typename T >
std::optional< T >	anonymous_namespace{DateTimeParser.cpp}::fromChars (std::string_view &str, size_t maxlen=std::numeric_limits< size_t >::max())
std::optional< int64_t >	anonymous_namespace{DateTimeParser.cpp}::unixTime (std::string_view const str)
template<>
std::optional< int64_t >	dateTimeParseOptional< kTIME > (std::string_view str, unsigned const dim)
template<>
std::optional< int64_t >	dateTimeParseOptional< kTIMESTAMP > (std::string_view str, unsigned const dim)
template<>
std::optional< int64_t >	dateTimeParseOptional< kDATE > (std::string_view str, unsigned const dim)
std::ostream &	operator<< (std::ostream &out, DateTimeParser::DateTime const &dt)

Variables
constexpr std::array< int, 12 >	anonymous_namespace{DateTimeParser.cpp}::month_prefixes
constexpr std::array < std::string_view, 13 >	anonymous_namespace{DateTimeParser.cpp}::month_suffixes
constexpr unsigned	anonymous_namespace{DateTimeParser.cpp}::pow_10 [10] {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000}

Function Documentation

template<>

std::optional<int64_t> dateTimeParseOptional< kDATE >	(	std::string_view	str,
		unsigned const	dim
	)

Definition at line 190 of file DateTimeParser.cpp.

References DateTimeParser::Date, DateTimeParser::parse(), run_benchmark_import::parser, DateTimeParser::setFormatType(), DateTimeParser::Timezone, anonymous_namespace{DateTimeParser.cpp}::unixTime(), and DateTimeParser::unparsed().

Referenced by import_export::Detector::detect_sqltype().

                                                                        {
  DateTimeParser parser;
  // Parse date
  parser.setFormatType(DateTimeParser::FormatType::Date);
  std::optional<int64_t> date = parser.parse(str, dim);
  if (!date) {
    return unixTime(str);
  }
  // Parse optional timezone
  std::string_view timezone = parser.unparsed();
  parser.setFormatType(DateTimeParser::FormatType::Timezone);
  std::optional<int64_t> tz = parser.parse(timezone, dim);
  return *date + tz.value_or(0);
}

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template<>

std::optional<int64_t> dateTimeParseOptional< kTIME >	(	std::string_view	str,
		unsigned const	dim
	)

Definition at line 135 of file DateTimeParser.cpp.

References DateTimeParser::parse(), run_benchmark_import::parser, DateTimeParser::setFormatType(), DateTimeParser::Time, DateTimeParser::Timezone, and DateTimeParser::unparsed().

Referenced by import_export::Detector::detect_sqltype().

                                                                        {
  if (!str.empty() && str.front() == 'T') {
    str.remove_prefix(1);
  }
  DateTimeParser parser;
  parser.setFormatType(DateTimeParser::FormatType::Time);
  std::optional<int64_t> time = parser.parse(str, dim);
  if (!time) {
    return std::nullopt;
  }
  // Parse optional timezone
  std::string_view timezone = parser.unparsed();
  parser.setFormatType(DateTimeParser::FormatType::Timezone);
  std::optional<int64_t> tz = parser.parse(timezone, dim);
  if (!parser.unparsed().empty()) {
    return std::nullopt;
  }
  return *time + tz.value_or(0);
}

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template<>

std::optional<int64_t> dateTimeParseOptional< kTIMESTAMP >	(	std::string_view	str,
		unsigned const	dim
	)

Definition at line 159 of file DateTimeParser.cpp.

References DateTimeParser::Date, DateTimeParser::parse(), run_benchmark_import::parser, DateTimeParser::setFormatType(), DateTimeParser::Time, DateTimeParser::Timezone, anonymous_namespace{DateTimeParser.cpp}::unixTime(), and DateTimeParser::unparsed().

Referenced by import_export::Detector::detect_sqltype().

                                                                             {
  if (!str.empty() && str.front() == 'T') {
    str.remove_prefix(1);
  }
  DateTimeParser parser;
  // Parse date
  parser.setFormatType(DateTimeParser::FormatType::Date);
  std::optional<int64_t> date = parser.parse(str, dim);
  if (!date) {
    return unixTime(str);
  }
  // Parse time-of-day
  std::string_view time_of_day = parser.unparsed();
  if (time_of_day.empty()) {
    return std::nullopt;
  } else if (time_of_day.front() == 'T' || time_of_day.front() == ':') {
    time_of_day.remove_prefix(1);
  }
  parser.setFormatType(DateTimeParser::FormatType::Time);
  std::optional<int64_t> time = parser.parse(time_of_day, dim);
  // Parse optional timezone
  std::string_view timezone = parser.unparsed();
  parser.setFormatType(DateTimeParser::FormatType::Timezone);
  std::optional<int64_t> tz = parser.parse(timezone, dim);
  return *date + time.value_or(0) + tz.value_or(0);
}

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std::ostream& operator<<	(	std::ostream &	out,
		DateTimeParser::DateTime const &	dt
	)

Definition at line 398 of file DateTimeParser.cpp.

References DateTimeParser::DateTime::d, DateTimeParser::DateTime::H, DateTimeParser::DateTime::m, DateTimeParser::DateTime::M, DateTimeParser::DateTime::n, DateTimeParser::DateTime::p, DateTimeParser::DateTime::S, DateTimeParser::DateTime::Y, and DateTimeParser::DateTime::z.

                                                                          {
  return out << dt.Y << '-' << dt.m << '-' << dt.d << ' ' << dt.H << ':' << dt.M << ':'
             << dt.S << '.' << dt.n << " p("
             << (dt.p ? *dt.p ? "true" : "false" : "unset") << ") z(" << dt.z << ')';
}