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

Utilities for BER date encoding and decoding.

== Synopsis

Declared in `<balber_berutil.h>`

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

== 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 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 options*: > 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_DateImpUtil/DateAndTimeHeaderUtil.adoc[`DateAndTimeHeaderUtil`] 
| Alias for extended‐binary date‐and‐time header utilities.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/DateEncoding.adoc[`DateEncoding`] 
| `DateEncoding` 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::Date` type.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/DateOrDateTz.adoc[`DateOrDateTz`] 
| `DateOrDateTz` is a convenient alias for `bdlb::Variant2<bdlt::Date, bdlt::DateTz>`.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/DateOrDateTzEncoding.adoc[`DateOrDateTzEncoding`] 
| Alias for date‐or‐date‐tz encoding format enumerations.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/DateTzEncoding.adoc[`DateTzEncoding`] 
| `DateEncoding` 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::DateTz` type.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/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_DateImpUtil/Iso8601Util.adoc[`Iso8601Util`] 
| Alias for ISO 8601 date and time encoding utilities.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/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_DateImpUtil/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_DateImpUtil/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_DateImpUtil/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.
|===


== Enums

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/balber/BerUtil_DateImpUtil/_04enum.adoc[`Unnamed enum`] 
| Epoch constants for compact‐binary date encoding.
|===


== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/balber/BerUtil_DateImpUtil/dateToDaysSinceEpoch.adoc[`dateToDaysSinceEpoch`] 
| Convert a date to days relative to the compact‐binary date epoch.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/daysSinceEpochToDate.adoc[`daysSinceEpochToDate`] 
| Load to the specified `date` the date represented by the serial date indicated by adding the specified `daysSinceEpoch` to `k_COMPACT_BINARY_DATE_EPOCH`.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/getDateOrDateTzValue.adoc[`getDateOrDateTzValue`] 
| Read the specified `length` number of bytes from the input sequence of the specified `streamBuf` and load to the specified `value` the date and optional time.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/getDateTzValue.adoc[`getDateTzValue`] 
| Decode a `bdlt::DateTz` value from `streamBuf`.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/getDateValue.adoc[`getDateValue`] 
| Decode a `bdlt::Date` value from `streamBuf`.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/putDateTzValue.adoc[`putDateTzValue`] 
| Encode a `bdlt::DateTz` value to `streamBuf`.
| xref:BloombergLP/balber/BerUtil_DateImpUtil/putDateValue.adoc[`putDateValue`] 
| Encode a `bdlt::Date` value to `streamBuf`.
|===



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