2024-04-26 09:31:10 +00:00
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# Strfmt [](https://github.com/go-openapi/strfmt/actions?query=workflow%3A"go+test") [](https://codecov.io/gh/go-openapi/strfmt)
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[](https://slackin.goswagger.io)
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2024-03-06 17:05:45 +00:00
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[](https://raw.githubusercontent.com/go-openapi/strfmt/master/LICENSE)
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[](http://godoc.org/github.com/go-openapi/strfmt)
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[](https://goreportcard.com/report/github.com/go-openapi/strfmt)
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This package exposes a registry of data types to support string formats in the go-openapi toolkit.
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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.
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## Supported data formats
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go-openapi/strfmt follows the swagger 2.0 specification with the following formats
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defined [here](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md#data-types).
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It also provides convenient extensions to go-openapi users.
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- [x] JSON-schema draft 4 formats
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- date-time
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- email
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- hostname
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- ipv4
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- ipv6
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- uri
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- [x] swagger 2.0 format extensions
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- binary
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- byte (e.g. base64 encoded string)
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- date (e.g. "1970-01-01")
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- password
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- [x] go-openapi custom format extensions
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- bsonobjectid (BSON objectID)
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- creditcard
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- duration (e.g. "3 weeks", "1ms")
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- hexcolor (e.g. "#FFFFFF")
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- isbn, isbn10, isbn13
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- mac (e.g "01:02:03:04:05:06")
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- rgbcolor (e.g. "rgb(100,100,100)")
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- ssn
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- uuid, uuid3, uuid4, uuid5
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- cidr (e.g. "192.0.2.1/24", "2001:db8:a0b:12f0::1/32")
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- ulid (e.g. "00000PP9HGSBSSDZ1JTEXBJ0PW", [spec](https://github.com/ulid/spec))
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> NOTE: as the name stands for, this package is intended to support string formatting only.
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> It does not provide validation for numerical values with swagger format extension for JSON types "number" or
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> "integer" (e.g. float, double, int32...).
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## Type conversion
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All types defined here are stringers and may be converted to strings with `.String()`.
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Note that most types defined by this package may be converted directly to string like `string(Email{})`.
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`Date` and `DateTime` may be converted directly to `time.Time` like `time.Time(Time{})`.
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Similarly, you can convert `Duration` to `time.Duration` as in `time.Duration(Duration{})`
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## Using pointers
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The `conv` subpackage provides helpers to convert the types to and from pointers, just like `go-openapi/swag` does
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with primitive types.
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## Format types
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Types defined in strfmt expose marshaling and validation capabilities.
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List of defined types:
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- Base64
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- CreditCard
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- Date
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- DateTime
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- Duration
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- Email
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- HexColor
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- Hostname
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- IPv4
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- IPv6
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- CIDR
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- ISBN
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- ISBN10
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- ISBN13
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- MAC
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- ObjectId
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- Password
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- RGBColor
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- SSN
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- URI
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- UUID
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- UUID3
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- UUID4
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- UUID5
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- [ULID](https://github.com/ulid/spec)
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