555 lines
32 KiB
Go
555 lines
32 KiB
Go
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package stringx
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"reflect"
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"regexp"
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"regexp/syntax"
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"sort"
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"strconv"
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"strings"
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"unicode"
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"unsafe"
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"git.cloudyne.io/go/hiscaler-gox/slicex"
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"golang.org/x/text/width"
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)
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var (
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rxEmoji = regexp.MustCompile(`[\x{1F3F4}](?:\x{E0067}\x{E0062}\x{E0077}\x{E006C}\x{E0073}\x{E007F})|[\x{1F3F4}](?:\x{E0067}\x{E0062}\x{E0073}\x{E0063}\x{E0074}\x{E007F})|[\x{1F3F4}](?:\x{E0067}\x{E0062}\x{E0065}\x{E006E}\x{E0067}\x{E007F})|[\x{1F3F4}](?:\x{200D}\x{2620}\x{FE0F})|[\x{1F3F3}](?:\x{FE0F}\x{200D}\x{1F308})|[\x{0023}\x{002A}\x{0030}\x{0031}\x{0032}\x{0033}\x{0034}\x{0035}\x{0036}\x{0037}\x{0038}\x{0039}](?:\x{FE0F}\x{20E3})|[\x{1F441}](?:\x{FE0F}\x{200D}\x{1F5E8}\x{FE0F})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F467}\x{200D}\x{1F467})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F467}\x{200D}\x{1F466})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F467})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F466}\x{200D}\x{1F466})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F466})|[\x{1F468}](?:\x{200D}\x{1F468}\x{200D}\x{1F467}\x{200D}\x{1F467})|[\x{1F468}](?:\x{200D}\x{1F468}\x{200D}\x{1F466}\x{200D}\x{1F466})|[\x{1F468}](?:\x{200D}\x{1F468}\x{200D}\x{1F467}\x{200D}\x{1F466})|[\x{1F468}](?:\x{200D}\x{1F468}\x{200D}\x{1F467})|[\x{1F468}](?:\x{200D}\x{1F468}\x{200D}\x{1F466})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F469}\x{200D}\x{1F467}\x{200D}\x{1F467})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F469}\x{200D}\x{1F466}\x{200D}\x{1F466})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F469}\x{200D}\x{1F467}\x{200D}\x{1F466})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F469}\x{200D}\x{1F467})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F469}\x{200D}\x{1F466})|[\x{1F469}](?:\x{200D}\x{2764}\x{FE0F}\x{200D}\x{1F469})|[\x{1F469}\x{1F468}](?:\x{200D}\x{2764}\x{FE0F}\x{200D}\x{1F468})|[\x{1F469}](?:\x{200D}\x{2764}\x{FE0F}\x{200D}\x{1F48B}\x{200D}\x{1F469})|[\x{1F469}\x{1F468}](?:\x{200D}\x{2764}\x{FE0F}\x{200D}\x{1F48B}\x{200D}\x{1F468})|[\x{1F468}\x{1F469}](?:\x{1F3FF}\x{200D}\x{1F9B3})|[\x{1F468}\x{1F469}](?:\x{1F3FE}\x{200D}\x{1F9B3})|[\x{1F468}\x{1F469}](?:\x{1F3FD}\x{200D}\x{1F9B3})|[\x{1F468}\x{1F469}](?:\x{1F3FC}\x{200D}\x{1F9B3})|[\x{1F468}\x{1F469}](?:\x{1F3FB}\x{200D}\x{1F9B3})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F9B3})|[\x{1F468}\x{1F469}](?:\x{1F3FF}\x{200D}\x{1F9B2})|[\x{1F468}\x{1F469}](?:\x{1F3FE}\x{200D}\x{1F9B2})|[\x{1F468}\x{1F469}](?:\x{1F3FD}\x{200D}\x{1F9B2})|[\x{1F468}\x{1F469}](?:\x{1F3FC}\x{200D}\x{1F9B2})|[\x{1F468}\x{1F469}](?:\x{1F3FB}\x{200D}\x{1F9B2})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F9B2})|[\x{1F468}\x{1F469}](?:\x{1F3FF}\x{200D}\x{1F9B1})|[\x{1F468}\x{1F469}](?:\x{1F3FE}\x{200D}\x{1F9B1})|[\x{1F468}\x{1F469}](?:\x{1F3FD}\x{200D}\x{1F9B1})|[\x{1F468}\x{1F469}](?:\x{1F3FC}\x{200D}\x{1F9B1})|[\x{1F468}\x{1F469}](?:\x{1F3FB}\x{200D}\x{1F9B1})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F9B1})|[\x{1F468}\x{1F469}](?:\x{1F3FF}\x{200D}\x{1F9B0})|[\x{1F468}\x{1F469}](?:\x{1F3FE}\x{200D}\x{1F9B0})|[\x{1F468}\x{1F469}](?:\x{1F3FD}\x{200D}\x{1F9B0})|[\x{1F468}\x{1F469}](?:\x{1F3FC}\x{200D}\x{1F9B0})|[\x{1F468}\x{1F469}](?:\x{1F3FB}\x{200D}\x{1F9B0})|[\x{1F468}\x{1F469}](?:\x{200D}\x{1F9B0})|[\x{1F575}\x{1F3CC}\x{26F9}\x{1F3CB}](?:\x{FE0F}\x{200D}\x{2640}\x{FE0F})|[\x{1F575}\x{1F3CC}\x{26F9}\x{1F3CB}](?:\x{FE0F}\x{200D}\x{2642}\x{FE0F})|[\x{1F46E}\x{1F575}\x{1F482}\x{1F477}\x{1F473}\x{1F471}\x{1F9D9}\x{1F9DA}\x{1F9DB}\x{1F9DC}\x{1F9DD}\x{1F64D}\x{1F64E}\x{1F645}\x{1F646}\x{1F481}\x{1F64B}\x{1F647}\x{1F926}\x{1F937}\x{1F486}\x{1F487}\x{1F6B6}\x{1F3C3}\x{1F9D6}\x{1F9D7}\x{1F9D8}\x{1F3CC}\x{1F3C4}\x{1F6A3}\x{1F3CA}\x{26F9}\x{1F3CB}\x{1F6B4}\x{1F6B5}\x{1F938}\x{1F93D}\x{1F93E}\x{1F939}](?:\x{1F3FF}\x{200D}\x{2640}\x{FE0F})|[\x{1F46E}\x{1F575}\x{1F482}\x{1F477}\x{1F473}\x{1F471}\x{1F9D9}\x{1F9DA}\x{1F9DB}\x{1F9DC}\x{1F9DD}\x{1F64D}\x{1F64E}\x{1F645}\x{1F646}\x{1F481}\x{1F64B}\x{1F647}\x{1F926}\x{1F937}\x{1F486}\x{1F487}\x{1F6B6}\x{1F3C3}\x{1F9D6}\x{1F9D7}\x{1F9D8}\x{1F3CC}\x{1F3C4}\x{1F6A3}\x{1F3CA}\x{26F9}\x{1F3CB}\x{1F6B4}\x{1F6B5}\x{1F938}\x{1F93D}\x{1F93E}\x{1F939}](?:\x{1F3FE}\x{200D}\x{2640}\x{FE0F})|[\x{1F46E}\x{1F575}\x{1F482}\x{1F477}\x{1F473}\x{1F471}\x{1F9D9}\x{1F9DA}\x{1F9DB}\x{1F9DC}\x{1F9DD}\x{1F64D}\x{1F64E}\x{1F645}\x{1F646}\x{1F481}\x{1F64B}\x{1F647}\x{1F926}\x{1F937}\x{1F486}\x{1F487}\x{1F6B6}\x{1F3C3}\x{1F9D6}\x{1F9D7}\x{1F9D8}\x{1F3CC}\x{1F3C4}\x{1F6A3}\x{1F3CA}\x{26F9}\x{1F3CB
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rxExtraSpace = regexp.MustCompile("\\s{2,}")
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)
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// IsEmpty 判断字符串是否为空
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func IsEmpty(s string) bool {
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return len(s) == 0
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}
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func IsBlank(s string) bool {
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return s == "" || strings.TrimSpace(s) == ""
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}
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// ToNumber 字符串转换为唯一数字
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// https://stackoverflow.com/questions/5459436/how-can-i-generate-a-unique-int-from-a-unique-string
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func ToNumber(s string) int {
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number := 0
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runes := []rune(s)
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for i, r := range runes {
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x := 0
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if i != 0 {
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x = int(runes[i-1])
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}
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number += ((x << 16) | (x >> 16)) ^ int(r)
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}
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return number
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}
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func ContainsChinese(str string) bool {
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if str == "" {
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return false
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}
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for _, v := range str {
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if unicode.Is(unicode.Han, v) {
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return true
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}
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}
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return false
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}
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// ToNarrow Full width string to half width
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func ToNarrow(str string) string {
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return width.Narrow.String(str)
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}
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// ToWiden Half with string to full width
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func ToWiden(str string) string {
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return width.Widen.String(str)
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}
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// Split split word by special seps, use empty string if seps is empty
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func Split(str string, separators ...string) []string {
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if len(separators) == 0 {
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return []string{str}
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}
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texts := make([]string, 0)
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if str != "" {
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n := len(separators)
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parts := strings.Split(str, separators[0])
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if n == 1 {
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texts = parts
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} else {
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n -= 2
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for i, sep := range separators[1:] {
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m := len(parts)
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for _, part := range parts {
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for _, s := range strings.Split(part, sep) {
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s = strings.TrimSpace(s)
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if s == "" {
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continue
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}
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if n == i {
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texts = append(texts, s)
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} else {
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parts = append(parts, s)
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}
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}
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}
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parts = append(parts[:0], parts[m:]...)
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}
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}
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}
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return texts
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}
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func String(value interface{}) string {
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switch val := value.(type) {
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case []byte:
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return string(val)
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case string:
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return val
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}
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v := reflect.ValueOf(value)
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switch v.Kind() {
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case reflect.Invalid:
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return ""
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case reflect.Bool:
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return strconv.FormatBool(v.Bool())
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case reflect.String:
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return v.String()
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return strconv.FormatInt(v.Int(), 10)
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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return strconv.FormatUint(v.Uint(), 10)
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case reflect.Float64:
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return strconv.FormatFloat(v.Float(), 'f', -1, 64)
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case reflect.Float32:
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return strconv.FormatFloat(v.Float(), 'f', -1, 32)
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case reflect.Ptr, reflect.Struct, reflect.Map, reflect.Slice, reflect.Array:
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if b, err := json.Marshal(v.Interface()); err == nil {
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return string(b)
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} else {
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return ""
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}
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default:
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return fmt.Sprintf("%v", value)
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}
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}
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// RemoveEmoji 清理 Emoji 表情
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func RemoveEmoji(str string, trim bool) string {
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if trim {
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str = strings.TrimSpace(str)
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}
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if str != "" {
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str = rxEmoji.ReplaceAllString(str, "")
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}
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return str
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}
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// TrimAny 移除头部和尾部指定的内容
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func TrimAny(s string, sets ...string) string {
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if s == "" || len(sets) == 0 {
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return s
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}
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trimSpace := false
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fixedSets := make([]string, 0)
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for _, set := range sets {
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n := 0
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for _, r := range set {
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if unicode.IsSpace(r) {
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n++
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}
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}
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if n == len(set) {
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trimSpace = true
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} else {
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fixedSets = append(fixedSets, set) // 不包括空白字符
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}
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}
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if trimSpace {
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s = strings.TrimSpace(s)
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if s == "" {
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return s
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}
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}
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if len(fixedSets) == 0 {
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return s
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}
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// 降序
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sort.Slice(fixedSets, func(i, j int) bool {
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return len(fixedSets[i]) > len(fixedSets[j])
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})
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minL := len(fixedSets[0])
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for i := range fixedSets {
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n := len(fixedSets[i])
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if n < minL {
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minL = n
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}
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}
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index := -1
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for i, set := range fixedSets {
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if len(set) == minL {
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index = i
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break
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}
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}
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values := [][]string{fixedSets[0:index], slicex.StringSliceReverse(fixedSets)}
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for _, value := range values {
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for {
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hitCounts := 0
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for _, set := range value {
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setLen := len(set)
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ss := []string{set}
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start := StartsWith(s, ss, false)
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if start {
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s = s[setLen:]
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if trimSpace {
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s = strings.TrimSpace(s)
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}
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}
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end := EndsWith(s, ss, false)
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if end {
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if len(s) > setLen {
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s = s[0 : len(s)-setLen]
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}
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if trimSpace {
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s = strings.TrimSpace(s)
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}
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}
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if s == "" {
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hitCounts = 0
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break
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} else if start || end {
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hitCounts++
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}
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}
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if hitCounts == 0 {
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break
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}
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}
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}
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return s
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}
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// RemoveExtraSpace 移除多余的空格
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func RemoveExtraSpace(s string) string {
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if s != "" {
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s = strings.TrimSpace(s)
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}
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if s == "" {
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return s
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}
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return rxExtraSpace.ReplaceAllLiteralString(strings.Replace(s, " ", " ", -1), " ")
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}
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func ToBytes(s string) []byte {
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|
|
sh := (*reflect.StringHeader)(unsafe.Pointer(&s))
|
|||
|
|
bh := reflect.SliceHeader{
|
|||
|
|
Data: sh.Data,
|
|||
|
|
Len: sh.Len,
|
|||
|
|
Cap: sh.Len,
|
|||
|
|
}
|
|||
|
|
return *(*[]byte)(unsafe.Pointer(&bh))
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// WordMatched 判断 s 中是否包含指定的 words 单词
|
|||
|
|
// 对于英文必须是单词形式，比如 he 不能匹配 hello world，只能匹配 hello|world
|
|||
|
|
// 如果是中文的话，则会使用 Index 进行判断，不等于 -1 则判断为匹配
|
|||
|
|
func WordMatched(s string, words []string, caseSensitive bool) bool {
|
|||
|
|
if s == "" || len(words) == 0 {
|
|||
|
|
return false
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
var b strings.Builder
|
|||
|
|
if !caseSensitive {
|
|||
|
|
b.WriteString("(?i)")
|
|||
|
|
}
|
|||
|
|
b.WriteString(`(^|([\s\t\n]+))(`)
|
|||
|
|
replacer := strings.NewReplacer(
|
|||
|
|
"\\\\", "\\\\\\",
|
|||
|
|
"(", "\\(",
|
|||
|
|
"|", "\\|",
|
|||
|
|
")", "\\)",
|
|||
|
|
"^", "\\^",
|
|||
|
|
"$", "\\$",
|
|||
|
|
".", "\\.",
|
|||
|
|
"[", "\\[",
|
|||
|
|
"*", "\\*",
|
|||
|
|
"+", "\\+",
|
|||
|
|
"?", "\\?",
|
|||
|
|
"{", "\\{",
|
|||
|
|
"-", "\\-",
|
|||
|
|
",", "\\,",
|
|||
|
|
)
|
|||
|
|
for i, word := range words {
|
|||
|
|
n := 0
|
|||
|
|
word = strings.TrimSpace(word)
|
|||
|
|
for _, w := range word {
|
|||
|
|
if !syntax.IsWordChar(w) {
|
|||
|
|
n++
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if n == len(word) {
|
|||
|
|
return false
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if i != 0 {
|
|||
|
|
b.WriteString("|")
|
|||
|
|
}
|
|||
|
|
b.WriteString(replacer.Replace(word))
|
|||
|
|
}
|
|||
|
|
b.WriteString(`)($|([\s\t\n]+))`)
|
|||
|
|
if re, err := regexp.Compile(b.String()); err == nil {
|
|||
|
|
if re.MatchString(s) {
|
|||
|
|
return true
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// 正则匹配失败后还需要判断是否为中文，为中文的话则直接使用 Index 函数进行判断是否存在
|
|||
|
|
if !caseSensitive {
|
|||
|
|
s = strings.ToLower(s)
|
|||
|
|
}
|
|||
|
|
for _, word := range words {
|
|||
|
|
if ContainsChinese(word) {
|
|||
|
|
if !caseSensitive {
|
|||
|
|
word = strings.ToLower(word)
|
|||
|
|
}
|
|||
|
|
if strings.Index(s, word) != -1 {
|
|||
|
|
return true
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return false
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func StartsWith(s string, ss []string, caseSensitive bool) bool {
|
|||
|
|
n := len(s)
|
|||
|
|
if ss == nil || n == 0 {
|
|||
|
|
return true
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
has := false
|
|||
|
|
for _, prefix := range ss {
|
|||
|
|
m := len(prefix)
|
|||
|
|
if m == 0 {
|
|||
|
|
has = true
|
|||
|
|
} else {
|
|||
|
|
if m <= n {
|
|||
|
|
if caseSensitive {
|
|||
|
|
has = strings.HasPrefix(s, prefix)
|
|||
|
|
} else {
|
|||
|
|
ns := s
|
|||
|
|
if n-m > 0 {
|
|||
|
|
ns = s[0:m]
|
|||
|
|
}
|
|||
|
|
has = strings.EqualFold(ns, prefix)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if has {
|
|||
|
|
break
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return has
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func EndsWith(s string, ss []string, caseSensitive bool) bool {
|
|||
|
|
n := len(s)
|
|||
|
|
if ss == nil || n == 0 {
|
|||
|
|
return true
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
has := false
|
|||
|
|
for _, suffix := range ss {
|
|||
|
|
m := len(suffix)
|
|||
|
|
if m == 0 {
|
|||
|
|
has = true
|
|||
|
|
} else {
|
|||
|
|
if m <= n {
|
|||
|
|
if caseSensitive {
|
|||
|
|
has = strings.HasSuffix(s, suffix)
|
|||
|
|
} else {
|
|||
|
|
ns := s
|
|||
|
|
if n-m > 0 {
|
|||
|
|
ns = s[n-m:]
|
|||
|
|
}
|
|||
|
|
has = strings.EqualFold(ns, suffix)
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if has {
|
|||
|
|
break
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return has
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func Contains(s string, ss []string, caseSensitive bool) bool {
|
|||
|
|
if len(ss) == 0 {
|
|||
|
|
return false
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if !caseSensitive {
|
|||
|
|
s = strings.ToLower(s)
|
|||
|
|
}
|
|||
|
|
for _, substr := range ss {
|
|||
|
|
if substr == "" {
|
|||
|
|
return true
|
|||
|
|
} else {
|
|||
|
|
if !caseSensitive {
|
|||
|
|
substr = strings.ToLower(substr)
|
|||
|
|
}
|
|||
|
|
if strings.Contains(s, substr) {
|
|||
|
|
return true
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
return false
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
func QuoteMeta(s string) string {
|
|||
|
|
if s == "" {
|
|||
|
|
return s
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
var buf bytes.Buffer
|
|||
|
|
buf.Grow(len(s))
|
|||
|
|
for _, char := range s {
|
|||
|
|
switch char {
|
|||
|
|
case '.', '+', '\\', '(', ')', '[', ']', '$', '^', '*', '?':
|
|||
|
|
buf.WriteRune('\\')
|
|||
|
|
}
|
|||
|
|
buf.WriteRune(char)
|
|||
|
|
}
|
|||
|
|
return buf.String()
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// HexToByte 16进制字符串转 []byte
|
|||
|
|
// Like pack("H*", string) in PHP
|
|||
|
|
func HexToByte(hex string) []byte {
|
|||
|
|
length := len(hex) / 2
|
|||
|
|
bytes := make([]byte, length)
|
|||
|
|
rs := []rune(hex)
|
|||
|
|
|
|||
|
|
for i := 0; i < length; i++ {
|
|||
|
|
s := string(rs[i*2 : i*2+2])
|
|||
|
|
value, _ := strconv.ParseInt(s, 16, 10)
|
|||
|
|
bytes[i] = byte(value & 0xFF)
|
|||
|
|
}
|
|||
|
|
return bytes
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// SequentialWordFields
|
|||
|
|
// 将 s 字符串根据指定的分隔符分隔为 1 - n 个连续单词组合的词组
|
|||
|
|
// 单词前后的非字母和数字将会移除掉（比如 help? 将会变成 help），单词中间的则不会处理（a?b 包含在单词中间的 ? 不会处理）
|
|||
|
|
//
|
|||
|
|
// stringx.SequentialWordFields("this is a string, are you sure?", 1, ",") => ["this", "is", "a", "string", "are", "you", "sure"]
|
|||
|
|
// stringx.SequentialWordFields("this is a string, are you sure?", 2, ",") => ["this", "is", "a", "string", "are", "you", "sure", "this is", "is a", "a string", "are you", "you sure"]
|
|||
|
|
func SequentialWordFields(s string, n int, separators ...string) []string {
|
|||
|
|
s = strings.TrimSpace(s)
|
|||
|
|
if s == "" {
|
|||
|
|
return nil
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
fields := make(map[string]string, 0)
|
|||
|
|
sections := Split(s, separators...)
|
|||
|
|
fnCleanWord := func(word string) string {
|
|||
|
|
if word == "" {
|
|||
|
|
return ""
|
|||
|
|
}
|
|||
|
|
return strings.TrimFunc(word, func(r rune) bool {
|
|||
|
|
return !unicode.IsLetter(r) && !unicode.IsNumber(r)
|
|||
|
|
})
|
|||
|
|
}
|
|||
|
|
sb := strings.Builder{}
|
|||
|
|
for _, section := range sections {
|
|||
|
|
words := strings.Fields(section)
|
|||
|
|
maxN := len(words)
|
|||
|
|
validN := n
|
|||
|
|
if n > maxN {
|
|||
|
|
validN = maxN
|
|||
|
|
}
|
|||
|
|
for i, word := range words {
|
|||
|
|
word = fnCleanWord(word)
|
|||
|
|
if word == "" {
|
|||
|
|
continue
|
|||
|
|
}
|
|||
|
|
fieldKey := strings.ToLower(word)
|
|||
|
|
if _, ok := fields[fieldKey]; !ok {
|
|||
|
|
fields[fieldKey] = word
|
|||
|
|
}
|
|||
|
|
if n > 1 {
|
|||
|
|
validN = i + n
|
|||
|
|
if validN > maxN {
|
|||
|
|
validN = maxN
|
|||
|
|
}
|
|||
|
|
for jj := validN; jj > i; jj-- {
|
|||
|
|
sb.Reset()
|
|||
|
|
for ii := i; ii < jj; ii++ {
|
|||
|
|
w := fnCleanWord(words[ii])
|
|||
|
|
if w != "" {
|
|||
|
|
sb.WriteString(w)
|
|||
|
|
if ii < jj-1 {
|
|||
|
|
sb.WriteRune(' ')
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if sb.Len() > 0 {
|
|||
|
|
fieldKey = strings.ToLower(sb.String())
|
|||
|
|
if _, ok := fields[fieldKey]; !ok {
|
|||
|
|
fields[fieldKey] = sb.String()
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
if len(fields) == 0 {
|
|||
|
|
return nil
|
|||
|
|
}
|
|||
|
|
items := make([]string, len(fields))
|
|||
|
|
i := 0
|
|||
|
|
for _, v := range fields {
|
|||
|
|
items[i] = v
|
|||
|
|
i++
|
|||
|
|
}
|
|||
|
|
return items
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// Len 获取字符串长度（一个中文算 1）
|
|||
|
|
func Len(s string) int {
|
|||
|
|
return len([]rune(s))
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// UpperFirst 首字母大写
|
|||
|
|
func UpperFirst(s string) string {
|
|||
|
|
r := []rune(s)
|
|||
|
|
if len(s) > 0 && unicode.IsLetter(r[0]) && unicode.IsLower(r[0]) {
|
|||
|
|
r[0] -= 32
|
|||
|
|
return string(r)
|
|||
|
|
}
|
|||
|
|
return s
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
// LowerFirst 首字母小写
|
|||
|
|
func LowerFirst(s string) string {
|
|||
|
|
r := []rune(s)
|
|||
|
|
if len(s) > 0 && unicode.IsLetter(r[0]) && unicode.IsUpper(r[0]) {
|
|||
|
|
r[0] += 32
|
|||
|
|
return string(r)
|
|||
|
|
}
|
|||
|
|
return s
|
|||
|
|
}
|