[#BloombergLP-balber-BerUtil_DatetimeImpUtil]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balber.adoc[balber]::BerUtil_DatetimeImpUtil
:relfileprefix: ../../
:mrdocs:

Utilities for BER datetime encoding and decoding.

== Synopsis

Declared in `<balber_berutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
struct BerUtil_DatetimeImpUtil;
----

== Description

This component‐private `struct` provides a namespace for a suite of functions used by `BerUtil` to implement BER encoding and decoding operations for date and time values. Within the definition of this `struct`:

* *the specification*: > Refers to the August 2015 revision of the ITU‐T Recommendation X.690.

* *the default set of optionsi*: > Refers to a `balber::BerEncoderOptions` value having a > `datetimeFractionalSecondPrecision` attribute of 3 and a > `encodeDateAndTimeTypesAsBinary` attribute of `false`.

See the package level documentation of {`balber`} for a definition of the compact and extended binary formats for date and time values.

== Type Aliases

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/Constants.adoc[`Constants`] 
| `Constants` is an alias to a namespace for a suite of general‐purpose constants that occur when encoding or decoding BER data.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/DateAndTimeHeader.adoc[`DateAndTimeHeader`] 
| Alias for the extended‐binary date‐and‐time header class.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/DateAndTimeHeaderUtil.adoc[`DateAndTimeHeaderUtil`] 
| Alias for extended‐binary date‐and‐time header utilities.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/DateUtil.adoc[`DateUtil`] 
| `DateUtil` is an alias to a namespace for a suite of functions used to implement BER encoding and decoding operations for date values.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/DatetimeEncoding.adoc[`DatetimeEncoding`] 
| `DatetimeEncoding` is an alias to a namespace for enumerating the set of formats that may be used by `BerUtil` to encode and decode values of `bdlt::Datetime` type.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/DatetimeOrDatetimeTz.adoc[`DatetimeOrDatetimeTz`] 
| `DatetimeOrDatetimeTz` is a convenient alias for `bdlb::Variant2<bdlt::Datetime, bdlt::DatetimeTz>`.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/DatetimeOrDatetimeTzEncoding.adoc[`DatetimeOrDatetimeTzEncoding`] 
| Alias for datetime‐or‐datetime‐tz encoding format enumerations.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/DatetimeTzEncoding.adoc[`DatetimeTzEncoding`] 
| Alias for datetime‐tz encoding format enumerations.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/ExtendedBinaryEncodingUtil.adoc[`ExtendedBinaryEncodingUtil`] 
| Alias for extended‐binary encoding decision utilities.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/IntegerUtil.adoc[`IntegerUtil`] 
| `IntegerUtil` is an alias to a namespace for a suite of functions used to implement BER encoding and decoding operations for integer values.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/Iso8601Util.adoc[`Iso8601Util`] 
| Alias for ISO 8601 date and time encoding utilities.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/LengthUtil.adoc[`LengthUtil`] 
| `LengthUtil` is an alias to a namespace for a suite of functions used to implement BER encoding and decoding operations for length quantities.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/StreambufUtil.adoc[`StreambufUtil`] 
| `StreambufUtil` is an alias to a namespace for a suite of functions used to implement input and output operations on `bsl::streambuf` objects.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/StringUtil.adoc[`StringUtil`] 
| `StringUtil` is an alias to a namespace for a suite of functions used by `BerUtil` to implement BER encoding and decoding operations for string values.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/TimeUtil.adoc[`TimeUtil`] 
| `DateUtil` is an alias to a namespace for a suite of functions used to implement BER encoding and decoding operations for time values.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/TimezoneUtil.adoc[`TimezoneUtil`] 
| `TimezoneUtil` is an alias to a namespace for a suite of functions used to implement BER encoding and decoding operations for time‐zone offset values.
|===


== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/getDatetimeOrDatetimeTzValue.adoc[`getDatetimeOrDatetimeTzValue`] 
| Write a representation of the specified `value` date, time, and optional time zone to the output sequence of the specified `streamBuf` according to the.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/getDatetimeTzValue.adoc[`getDatetimeTzValue`] 
| Read the specified `length` number of bytes from the input sequence of the specified `streamBuf` and load to the specified `value` the date, time, and time.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/getDatetimeValue.adoc[`getDatetimeValue`] 
| Read the specified `length` number of bytes from the input sequence of the specified `streamBuf` and load to the specified `value` the date and time value.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/putDatetimeTzValue.adoc[`putDatetimeTzValue`] 
| Write a representation of the specified `value` date, time, and time zone to the output sequence of the specified `streamBuf` according to the specified.
| xref:BloombergLP/balber/BerUtil_DatetimeImpUtil/putDatetimeValue.adoc[`putDatetimeValue`] 
| Write a representation of the specified `value` date and time to the output sequence of the specified `streamBuf` according to the specified `options`.
|===



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