/
s.go
244 lines (202 loc) · 4.13 KB
/
s.go
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package ss
import (
"strings"
)
// Left returns the left n runes of s at most.
func Left(s string, n int) string {
if n <= len(s) {
return s[:n]
}
return s
}
func IsDigits(s string) bool {
for _, c := range s {
if c < '0' || c > '9' {
return false
}
}
return true
}
// Repeat repeats s with separator seq for n times.
func Repeat(s, sep string, n int) string {
result := ""
for i := 0; i < n; i++ {
if i == 0 {
result = s
} else {
result += sep + s
}
}
return result
}
// FirstWord returns the first word of the SQL statement s.
func FirstWord(s string) string {
if v := FieldsN(strings.TrimSpace(s), 2); len(v) > 0 {
return v[0]
}
return ""
}
func RemoveAll(s, old string) string { return strings.ReplaceAll(s, old, "") }
func Ori(a, b int) int {
if a == 0 {
return b
}
return a
}
func Or(a, b string) string {
if a == "" {
return b
}
return a
}
func Ifi(b bool, s1, s2 int) int {
if b {
return s1
}
return s2
}
func If(b bool, s1, s2 string) string {
if b {
return s1
}
return s2
}
func ContainsFold(s string, ss ...string) bool {
s = strings.ToLower(s)
for _, of := range ss {
of = strings.ToLower(of)
if strings.Contains(s, of) {
return true
}
}
return false
}
func Contains(s string, ss ...string) bool {
for _, of := range ss {
if strings.Contains(s, of) {
return true
}
}
return false
}
func AnyOf(s string, ss ...string) bool {
for _, of := range ss {
if s == of {
return true
}
}
return false
}
func AnyOfFold(s string, ss ...string) bool {
s = strings.ToLower(s)
for _, of := range ss {
if s == strings.ToLower(of) {
return true
}
}
return false
}
func HasPrefix(s string, ss ...string) bool {
for _, one := range ss {
if strings.HasPrefix(s, one) {
return true
}
}
return false
}
func HasSuffix(s string, ss ...string) bool {
for _, one := range ss {
if strings.HasSuffix(s, one) {
return true
}
}
return false
}
//func Jsonify(v interface{}) string {
// b := &bytes.Buffer{}
// encoder := json.NewEncoder(b)
// encoder.SetEscapeHTML(false)
// if err := encoder.Encode(v); err != nil {
// return err.Error()
// }
//
// return b.String()
//}
func ToSet(v []string) map[string]bool {
m := make(map[string]bool)
for _, s := range v {
m[s] = true
}
return m
}
type Case int
const (
CaseUnchanged Case = iota
CaseLower
CaseUpper
)
type SplitConfig struct {
Separators string
IgnoreEmpty bool
TrimSpace bool
Case Case
N int
}
type SplitOption func(*SplitConfig)
func WithConfig(v SplitConfig) SplitOption { return func(c *SplitConfig) { *c = v } }
func WithSeps(v string) SplitOption { return func(c *SplitConfig) { c.Separators = v } }
func WithN(v int) SplitOption { return func(c *SplitConfig) { c.N = v } }
func WithIgnoreEmpty(v bool) SplitOption { return func(c *SplitConfig) { c.IgnoreEmpty = v } }
func WithTrimSpace(v bool) SplitOption { return func(c *SplitConfig) { c.TrimSpace = v } }
func WithCase(v Case) SplitOption { return func(c *SplitConfig) { c.Case = v } }
func Split(s string, options ...SplitOption) []string {
v := make([]string, 0)
c := createConfig(options)
ff := FieldsFuncN(s, c.N, func(r rune) bool {
return strings.ContainsRune(c.Separators, r)
})
for _, f := range ff {
if c.TrimSpace {
f = strings.TrimSpace(f)
}
if c.IgnoreEmpty && f == "" {
continue
}
switch c.Case {
case CaseLower:
f = strings.ToLower(f)
case CaseUpper:
f = strings.ToUpper(f)
}
v = append(v, f)
}
return v
}
func createConfig(options []SplitOption) *SplitConfig {
c := &SplitConfig{TrimSpace: true, IgnoreEmpty: true}
for _, o := range options {
o(c)
}
if c.Separators == "" {
c.Separators = ", "
}
return c
}
func ToLowerKebab(name string) string {
var sb strings.Builder
isUpper := func(c uint8) bool { return 'A' <= c && c <= 'Z' }
for i := 0; i < len(name); i++ {
c := name[i]
if isUpper(c) {
if sb.Len() > 0 {
if i+1 < len(name) && (!(i-1 >= 0 && isUpper(name[i-1])) || !isUpper(name[i+1])) {
sb.WriteByte('-')
}
}
sb.WriteByte(c - 'A' + 'a')
} else {
sb.WriteByte(c)
}
}
return sb.String()
}