121 lines
2.2 KiB
Go
121 lines
2.2 KiB
Go
package strings
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import (
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"crypto/md5"
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"fmt"
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"golang.org/x/exp/constraints"
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"io"
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"strconv"
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"strings"
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"unicode"
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)
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func Join(s ...string) (str string) {
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if len(s) == 1 {
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return s[0]
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} else if len(s) > 1 {
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b := strings.Builder{}
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for _, s2 := range s {
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b.WriteString(s2)
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}
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str = b.String()
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}
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return
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}
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func FirstUpper(s string) string {
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if len(s) < 1 {
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return s
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}
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return Join(strings.ToUpper(s[:1]), s[1:])
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}
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func ToInteger[T constraints.Integer](s string, defaults T) T {
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if s == "" {
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return defaults
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}
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i, err := strconv.ParseInt(s, 10, 64)
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if err != nil {
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return defaults
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}
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return T(i)
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}
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func ToInt[T constraints.Integer](s string) T {
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defaults := T(0)
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if s == "" {
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return defaults
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}
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i, err := strconv.ParseInt(s, 10, 64)
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if err != nil {
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return defaults
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}
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return T(i)
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}
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func Md5(str string) string {
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h := md5.New()
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_, err := io.WriteString(h, str)
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if err != nil {
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return ""
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}
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return fmt.Sprintf("%x", h.Sum(nil))
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}
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func BuilderJoin(s *strings.Builder, str ...string) {
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for _, ss := range str {
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s.WriteString(ss)
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}
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}
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func BuilderFormat(s *strings.Builder, format string, args ...any) {
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s.WriteString(fmt.Sprintf(format, args...))
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}
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type Builder struct {
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*strings.Builder
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}
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func NewBuilder() *Builder {
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return &Builder{&strings.Builder{}}
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}
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func (b *Builder) WriteString(s ...string) (count int) {
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for _, ss := range s {
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i, _ := b.Builder.WriteString(ss)
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count += i
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}
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return
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}
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func Replace(s string, replace map[string]string) string {
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for k, v := range replace {
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s = strings.ReplaceAll(s, k, v)
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}
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return s
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}
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func (b *Builder) Sprintf(format string, a ...any) int {
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i, _ := fmt.Fprintf(b, format, a...)
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return i
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}
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// CutSpecialDuplicate '\t', '\n', '\v', '\f', '\r', ' ', U+0085 (NEL), U+00A0 (NBSP)
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func CutSpecialDuplicate(s, char string) string {
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return strings.Join(strings.Fields(s), char)
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}
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// CamelCaseTo 驼峰单词转下划线或横杠单词 //分隔符
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func CamelCaseTo(s string, delimiter rune) string {
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var output []rune
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for i, r := range s {
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if i == 0 {
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output = append(output, unicode.ToLower(r))
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} else {
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if unicode.IsUpper(r) {
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output = append(output, delimiter)
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}
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output = append(output, unicode.ToLower(r))
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}
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}
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return string(output)
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}
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