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This package exposes a registry of data types to support string formats in the go-openapi toolkit.

strfmt represents a well known string format such as credit card or email. The go toolkit for OpenAPI specifications knows how to deal with those.

Supported data formats

go-openapi/strfmt follows the swagger 2.0 specification with the following formats defined here.

It also provides convenient extensions to go-openapi users.

  • [x] JSON-schema draft 4 formats
    • date-time
    • email
    • hostname
    • ipv4
    • ipv6
    • uri
  • [x] swagger 2.0 format extensions
    • binary
    • byte (e.g. base64 encoded string)
    • date (e.g. “1970-01-01”)
    • password
  • [x] go-openapi custom format extensions
    • bsonobjectid (BSON objectID)
    • creditcard
    • duration (e.g. “3 weeks”, “1ms”)
    • hexcolor (e.g. “#FFFFFF”)
    • isbn, isbn10, isbn13
    • mac (e.g “01:02:03:04:05:06”)
    • rgbcolor (e.g. “rgb(100,100,100)”)
    • ssn
    • uuid, uuid3, uuid4, uuid5
    • cidr (e.g. “192.0.2.124”, “2001:db8:a0b:12f0::132”)

NOTE: as the name stands for, this package is intended to support string formatting only. It does not provide validation for numerical values with swagger format extension for JSON types “number” or “integer” (e.g. float, double, int32…).

Type conversion

All types defined here are stringers and may be converted to strings with .String(). Note that most types defined by this package may be converted directly to string like string(Email{}).

Date and DateTime may be converted directly to time.Time like time.Time(Time{}). Similarly, you can convert Duration to time.Duration as in time.Duration(Duration{})

Using pointers

The conv subpackage provides helpers to convert the types to and from pointers, just like go-openapi/swag does with primitive types.

Format types

Types defined in strfmt expose marshaling and validation capabilities.

List of defined types: - Base64 - CreditCard - Date - DateTime - Duration - Email - HexColor - Hostname - IPv4 - IPv6 - CIDR - ISBN - ISBN10 - ISBN13 - MAC - ObjectId - Password - RGBColor - SSN - URI - UUID - UUID3 - UUID4 - UUID5