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ext.go
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ext.go
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package str
import (
"bytes"
"regexp"
"runtime"
"strings"
"unicode"
)
var Enter string
func init() {
system := runtime.GOOS
switch system {
case "windows":
Enter = "\r\n"
default:
Enter = "\n"
}
}
type ReplacePoint struct {
Old string
New string
N int
}
func Replaces(s string, rs ...ReplacePoint) string {
if len(rs) > 0 {
for _, r := range rs {
if r.N == 0 {
r.N = -1
}
s = strings.Replace(s, r.Old, r.New, r.N)
}
}
return s
}
func Split(s string, sep string) []string {
var seg []string
for _, sb := range strings.Split(s, sep) {
if sb != "" {
seg = append(seg, strings.TrimSpace(sb))
}
}
return seg
}
func UpperCaseToUnderScore(s string) string {
re := regexp.MustCompile(`(?U)([A-Z][a-z])`)
snake := re.ReplaceAllString(s, "${1}_")
snake = strings.ToLower(snake)
snake = strings.TrimPrefix(snake, "_")
snake = strings.TrimSuffix(snake, "_")
return snake
}
func IsAlpha(s string) bool {
if s == "" {
return false
}
for _, v := range s {
if !unicode.IsLetter(v) {
return false
}
}
return true
}
// IsAlphanumeric checks if the string contains only Unicode letters or digits.
func IsAlphanumeric(s string) bool {
if s == "" {
return false
}
for _, v := range s {
if !isAlphanumeric(v) {
return false
}
}
return true
}
// IsNumeric Checks if the string contains only digits. A decimal point is not a digit and returns false.
func IsNumeric(s string) bool {
if s == "" {
return false
}
for _, v := range s {
if !unicode.IsDigit(v) {
return false
}
}
return true
}
func isAlphanumeric(v rune) bool {
return unicode.IsDigit(v) || unicode.IsLetter(v)
}
func IsLower(s string) bool {
if s == "" {
return true
}
for _, v := range s {
if !unicode.IsLower(v) {
return false
}
}
return true
}
func IsUpper(s string) bool {
if s == "" {
return true
}
for _, v := range s {
if !unicode.IsUpper(v) {
return false
}
}
return true
}
func HasLower(s string) bool {
if s == "" {
return false
}
for _, v := range s {
if unicode.IsLower(v) {
return true
}
}
return false
}
func HasUpper(s string) bool {
if s == "" {
return false
}
for _, v := range s {
if unicode.IsUpper(v) {
return true
}
}
return false
}
func HasEmpty(args ...string) bool {
for _, arg := range args {
if len(arg) == 0 {
return true
}
}
return false
}
type MatchProxy struct {
RawString string
Func []func(raw string, pattern string) bool
Pattern []string
}
type MatchOption func(m *MatchProxy)
func WithRawString(s string) MatchOption {
return func(m *MatchProxy) {
m.RawString = s
}
}
func WithFunc(f func(raw string, pattern string) bool, pattern string) MatchOption {
return func(m *MatchProxy) {
m.Func = append(m.Func, f)
m.Pattern = append(m.Pattern, pattern)
}
}
func IsMatch(and bool, opts ...MatchOption) bool {
m := &MatchProxy{}
for _, opt := range opts {
opt(m)
}
switch and {
case true:
for i, f := range m.Func {
if !f(m.RawString, m.Pattern[i]) {
return false
}
}
return true
case false:
for i, f := range m.Func {
if f(m.RawString, m.Pattern[i]) {
return true
}
}
return false
}
return false
}
func ByteAppend(b ...[]byte) []byte {
buffer := bytes.Buffer{}
for _, buf := range b {
buffer.Write(buf)
}
return buffer.Bytes()
}
func StringAppend(ss ...string) string {
builder := strings.Builder{}
for _, s := range ss {
builder.WriteString(s)
}
return builder.String()
}
func LastLineByte(buf []byte) []byte {
index := bytes.LastIndex(buf, []byte(Enter))
if index == -1 {
return buf
} else {
return buf[index+1:]
}
}
func LastLine(s string) string {
return string(LastLineByte([]byte(s)))
}