mirror of
https://github.com/gofiber/fiber.git
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72 lines
3.0 KiB
Go
72 lines
3.0 KiB
Go
// ⚡️ Fiber is an Express inspired web framework written in Go with ☕️
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// 🤖 Github Repository: https://github.com/gofiber/fiber
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// 📌 API Documentation: https://docs.gofiber.io
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package utils
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import (
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"crypto/rand"
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"encoding/binary"
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"encoding/hex"
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"reflect"
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"runtime"
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"sync"
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"sync/atomic"
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)
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const toLowerTable = "\x00\x01\x02\x03\x04\x05\x06\a\b\t\n\v\f\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !\"#$%&'()*+,-./0123456789:;<=>?@abcdefghijklmnopqrstuvwxyz[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\u007f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
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const toUpperTable = "\x00\x01\x02\x03\x04\x05\x06\a\b\t\n\v\f\r\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ{|}~\u007f\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff"
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// Copyright © 2014, Roger Peppe
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// github.com/rogpeppe/fastuuid
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// All rights reserved.
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var uuidSeed [24]byte
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var uuidCounter uint64
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var uuidSetup sync.Once
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func UUID() string {
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// Setup seed & counter once
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uuidSetup.Do(func() {
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if _, err := rand.Read(uuidSeed[:]); err != nil {
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return
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}
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uuidCounter = binary.LittleEndian.Uint64(uuidSeed[:8])
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})
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if atomic.LoadUint64(&uuidCounter) <= 0 {
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return "00000000-0000-0000-0000-000000000000"
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}
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// first 8 bytes differ, taking a slice of the first 16 bytes
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x := atomic.AddUint64(&uuidCounter, 1)
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uuid := uuidSeed
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binary.LittleEndian.PutUint64(uuid[:8], x)
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uuid[6], uuid[9] = uuid[9], uuid[6]
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// RFC4122 v4
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uuid[6] = (uuid[6] & 0x0f) | 0x40
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uuid[8] = uuid[8]&0x3f | 0x80
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// create UUID representation of the first 128 bits
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b := make([]byte, 36)
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hex.Encode(b[0:8], uuid[0:4])
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b[8] = '-'
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hex.Encode(b[9:13], uuid[4:6])
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b[13] = '-'
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hex.Encode(b[14:18], uuid[6:8])
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b[18] = '-'
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hex.Encode(b[19:23], uuid[8:10])
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b[23] = '-'
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hex.Encode(b[24:], uuid[10:16])
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return GetString(b)
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}
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// Returns function name
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func FunctionName(fn interface{}) string {
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t := reflect.ValueOf(fn).Type()
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if t.Kind() == reflect.Func {
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return runtime.FuncForPC(reflect.ValueOf(fn).Pointer()).Name()
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}
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return t.String()
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}
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