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38 lines
1.0 KiB
Go
38 lines
1.0 KiB
Go
package core
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// IDOptions holds the options used to generate an ID.
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type IDOptions struct {
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Length int
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Charset Charset
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Case Case
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}
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// Charset is a set of characters.
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type Charset []rune
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var (
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// CharsetAlphanum is a charset containing letters and numbers.
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CharsetAlphanum = Charset("0123456789abcdefghijklmnopqrstuvwxyz")
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// CharsetAlphanum is a charset containing hexadecimal characters.
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CharsetHex = Charset("0123456789abcdef")
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// CharsetLetters is a charset containing only letters.
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CharsetLetters = Charset("abcdefghijklmnopqrstuvwxyz")
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// CharsetNumbers is a charset containing only numbers.
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CharsetNumbers = Charset("0123456789")
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)
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// Case represents the letter case to use when generating an ID.
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type Case int
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const (
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CaseLower Case = iota + 1
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CaseUpper
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CaseMixed
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)
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// IDGenerator is a function returning a new ID with each invocation.
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type IDGenerator func() string
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// IDGeneratorFactory creates a new IDGenerator function using the given IDOptions.
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type IDGeneratorFactory func(opts IDOptions) func() string
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