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Time and integer parsing
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c8d8b24317
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4 changed files with 62 additions and 0 deletions
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@ -1,5 +1,6 @@
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#pragma once
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#include <optional>
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#include <string>
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#include <vector>
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@ -29,5 +30,8 @@ std::vector<std::string> ParseTokens(const std::string& s,
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std::string ToString(const std::vector<std::string>& v);
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template<typename T>
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std::optional<T> TryParseUnsignedLong(const std::string& str);
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} // namespace util
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} // namespace scwx
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@ -1,6 +1,7 @@
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#pragma once
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#include <chrono>
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#include <optional>
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#if !defined(_MSC_VER)
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# include <date/tz.h>
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@ -24,5 +25,9 @@ std::string TimeString(std::chrono::system_clock::time_point time,
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const time_zone* timeZone = nullptr,
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bool epochValid = true);
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template<typename T>
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std::optional<std::chrono::sys_time<T>>
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TryParseDateTime(const std::string& dateTimeFormat, const std::string& str);
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} // namespace util
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} // namespace scwx
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@ -88,5 +88,24 @@ std::string ToString(const std::vector<std::string>& v)
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return value;
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}
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template<typename T>
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std::optional<T> TryParseUnsignedLong(const std::string& str)
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{
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std::optional<T> value = std::nullopt;
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try
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{
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value = static_cast<T>(std::stoul(str));
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}
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catch (const std::exception&)
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{
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}
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return value;
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}
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template std::optional<std::uint16_t>
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TryParseUnsignedLong<std::uint16_t>(const std::string& str);
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} // namespace util
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} // namespace scwx
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@ -10,6 +10,12 @@
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#include <scwx/util/time.hpp>
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#include <sstream>
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#if !defined(_MSC_VER)
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# include <date/date.h>
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#endif
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namespace scwx
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{
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namespace util
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@ -55,5 +61,33 @@ std::string TimeString(std::chrono::system_clock::time_point time,
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return os.str();
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}
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template<typename T>
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std::optional<std::chrono::sys_time<T>>
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TryParseDateTime(const std::string& dateTimeFormat, const std::string& str)
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{
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using namespace std::chrono;
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#if !defined(_MSC_VER)
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using namespace date;
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#endif
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std::optional<std::chrono::sys_time<T>> value = std::nullopt;
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std::chrono::sys_time<T> dateTime;
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std::istringstream ssDateTime {str};
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ssDateTime >> parse(dateTimeFormat, dateTime);
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if (!ssDateTime.fail())
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{
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value = dateTime;
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}
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return value;
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}
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template std::optional<std::chrono::sys_time<std::chrono::seconds>>
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TryParseDateTime<std::chrono::seconds>(const std::string& dateTimeFormat,
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const std::string& str);
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} // namespace util
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} // namespace scwx
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