mirror of
https://github.com/go-gitea/gitea.git
synced 2024-12-15 18:05:15 +01:00
fc039167d2
To make sure Gitea's next release's lifecycle could have active Golang support. And min/max are builtin now.
259 lines
5.9 KiB
Go
259 lines
5.9 KiB
Go
// Copyright 2017 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package util
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/rand"
|
|
"encoding/base64"
|
|
"fmt"
|
|
"math/big"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"golang.org/x/text/cases"
|
|
"golang.org/x/text/language"
|
|
)
|
|
|
|
// OptionalBool a boolean that can be "null"
|
|
type OptionalBool byte
|
|
|
|
const (
|
|
// OptionalBoolNone a "null" boolean value
|
|
OptionalBoolNone OptionalBool = iota
|
|
// OptionalBoolTrue a "true" boolean value
|
|
OptionalBoolTrue
|
|
// OptionalBoolFalse a "false" boolean value
|
|
OptionalBoolFalse
|
|
)
|
|
|
|
// IsTrue return true if equal to OptionalBoolTrue
|
|
func (o OptionalBool) IsTrue() bool {
|
|
return o == OptionalBoolTrue
|
|
}
|
|
|
|
// IsFalse return true if equal to OptionalBoolFalse
|
|
func (o OptionalBool) IsFalse() bool {
|
|
return o == OptionalBoolFalse
|
|
}
|
|
|
|
// IsNone return true if equal to OptionalBoolNone
|
|
func (o OptionalBool) IsNone() bool {
|
|
return o == OptionalBoolNone
|
|
}
|
|
|
|
// OptionalBoolOf get the corresponding OptionalBool of a bool
|
|
func OptionalBoolOf(b bool) OptionalBool {
|
|
if b {
|
|
return OptionalBoolTrue
|
|
}
|
|
return OptionalBoolFalse
|
|
}
|
|
|
|
// OptionalBoolParse get the corresponding OptionalBool of a string using strconv.ParseBool
|
|
func OptionalBoolParse(s string) OptionalBool {
|
|
b, e := strconv.ParseBool(s)
|
|
if e != nil {
|
|
return OptionalBoolNone
|
|
}
|
|
return OptionalBoolOf(b)
|
|
}
|
|
|
|
// IsEmptyString checks if the provided string is empty
|
|
func IsEmptyString(s string) bool {
|
|
return len(strings.TrimSpace(s)) == 0
|
|
}
|
|
|
|
// NormalizeEOL will convert Windows (CRLF) and Mac (CR) EOLs to UNIX (LF)
|
|
func NormalizeEOL(input []byte) []byte {
|
|
var right, left, pos int
|
|
if right = bytes.IndexByte(input, '\r'); right == -1 {
|
|
return input
|
|
}
|
|
length := len(input)
|
|
tmp := make([]byte, length)
|
|
|
|
// We know that left < length because otherwise right would be -1 from IndexByte.
|
|
copy(tmp[pos:pos+right], input[left:left+right])
|
|
pos += right
|
|
tmp[pos] = '\n'
|
|
left += right + 1
|
|
pos++
|
|
|
|
for left < length {
|
|
if input[left] == '\n' {
|
|
left++
|
|
}
|
|
|
|
right = bytes.IndexByte(input[left:], '\r')
|
|
if right == -1 {
|
|
copy(tmp[pos:], input[left:])
|
|
pos += length - left
|
|
break
|
|
}
|
|
copy(tmp[pos:pos+right], input[left:left+right])
|
|
pos += right
|
|
tmp[pos] = '\n'
|
|
left += right + 1
|
|
pos++
|
|
}
|
|
return tmp[:pos]
|
|
}
|
|
|
|
// CryptoRandomInt returns a crypto random integer between 0 and limit, inclusive
|
|
func CryptoRandomInt(limit int64) (int64, error) {
|
|
rInt, err := rand.Int(rand.Reader, big.NewInt(limit))
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return rInt.Int64(), nil
|
|
}
|
|
|
|
const alphanumericalChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
|
|
|
|
// CryptoRandomString generates a crypto random alphanumerical string, each byte is generated by [0,61] range
|
|
func CryptoRandomString(length int64) (string, error) {
|
|
buf := make([]byte, length)
|
|
limit := int64(len(alphanumericalChars))
|
|
for i := range buf {
|
|
num, err := CryptoRandomInt(limit)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
buf[i] = alphanumericalChars[num]
|
|
}
|
|
return string(buf), nil
|
|
}
|
|
|
|
// CryptoRandomBytes generates `length` crypto bytes
|
|
// This differs from CryptoRandomString, as each byte in CryptoRandomString is generated by [0,61] range
|
|
// This function generates totally random bytes, each byte is generated by [0,255] range
|
|
func CryptoRandomBytes(length int64) ([]byte, error) {
|
|
buf := make([]byte, length)
|
|
_, err := rand.Read(buf)
|
|
return buf, err
|
|
}
|
|
|
|
// ToUpperASCII returns s with all ASCII letters mapped to their upper case.
|
|
func ToUpperASCII(s string) string {
|
|
b := []byte(s)
|
|
for i, c := range b {
|
|
if 'a' <= c && c <= 'z' {
|
|
b[i] -= 'a' - 'A'
|
|
}
|
|
}
|
|
return string(b)
|
|
}
|
|
|
|
// ToTitleCase returns s with all english words capitalized
|
|
func ToTitleCase(s string) string {
|
|
// `cases.Title` is not thread-safe, do not use global shared variable for it
|
|
return cases.Title(language.English).String(s)
|
|
}
|
|
|
|
// ToTitleCaseNoLower returns s with all english words capitalized without lower-casing
|
|
func ToTitleCaseNoLower(s string) string {
|
|
// `cases.Title` is not thread-safe, do not use global shared variable for it
|
|
return cases.Title(language.English, cases.NoLower).String(s)
|
|
}
|
|
|
|
// ToInt64 transform a given int into int64.
|
|
func ToInt64(number any) (int64, error) {
|
|
var value int64
|
|
switch v := number.(type) {
|
|
case int:
|
|
value = int64(v)
|
|
case int8:
|
|
value = int64(v)
|
|
case int16:
|
|
value = int64(v)
|
|
case int32:
|
|
value = int64(v)
|
|
case int64:
|
|
value = v
|
|
|
|
case uint:
|
|
value = int64(v)
|
|
case uint8:
|
|
value = int64(v)
|
|
case uint16:
|
|
value = int64(v)
|
|
case uint32:
|
|
value = int64(v)
|
|
case uint64:
|
|
value = int64(v)
|
|
|
|
case float32:
|
|
value = int64(v)
|
|
case float64:
|
|
value = int64(v)
|
|
|
|
case string:
|
|
var err error
|
|
if value, err = strconv.ParseInt(v, 10, 64); err != nil {
|
|
return 0, err
|
|
}
|
|
default:
|
|
return 0, fmt.Errorf("unable to convert %v to int64", number)
|
|
}
|
|
return value, nil
|
|
}
|
|
|
|
// ToFloat64 transform a given int into float64.
|
|
func ToFloat64(number any) (float64, error) {
|
|
var value float64
|
|
switch v := number.(type) {
|
|
case int:
|
|
value = float64(v)
|
|
case int8:
|
|
value = float64(v)
|
|
case int16:
|
|
value = float64(v)
|
|
case int32:
|
|
value = float64(v)
|
|
case int64:
|
|
value = float64(v)
|
|
|
|
case uint:
|
|
value = float64(v)
|
|
case uint8:
|
|
value = float64(v)
|
|
case uint16:
|
|
value = float64(v)
|
|
case uint32:
|
|
value = float64(v)
|
|
case uint64:
|
|
value = float64(v)
|
|
|
|
case float32:
|
|
value = float64(v)
|
|
case float64:
|
|
value = v
|
|
|
|
case string:
|
|
var err error
|
|
if value, err = strconv.ParseFloat(v, 64); err != nil {
|
|
return 0, err
|
|
}
|
|
default:
|
|
return 0, fmt.Errorf("unable to convert %v to float64", number)
|
|
}
|
|
return value, nil
|
|
}
|
|
|
|
// ToPointer returns the pointer of a copy of any given value
|
|
func ToPointer[T any](val T) *T {
|
|
return &val
|
|
}
|
|
|
|
func Base64FixedDecode(encoding *base64.Encoding, src []byte, length int) ([]byte, error) {
|
|
decoded := make([]byte, encoding.DecodedLen(len(src))+3)
|
|
if n, err := encoding.Decode(decoded, src); err != nil {
|
|
return nil, err
|
|
} else if n != length {
|
|
return nil, fmt.Errorf("invalid base64 decoded length: %d, expects: %d", n, length)
|
|
}
|
|
return decoded[:length], nil
|
|
}
|