103 lines
2.1 KiB
Go
103 lines
2.1 KiB
Go
// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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package str
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import (
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"math/rand"
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"strings"
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"time"
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)
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const (
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NUMBERSTRING = "0123456789"
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CHARSTRING = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
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)
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// get random number string with length.
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func GetRandomString(l int) string {
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str := NUMBERSTRING
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bytes := []byte(str)
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result := []byte{}
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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for i := 0; i < l; i++ {
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result = append(result, bytes[r.Intn(len(bytes))])
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}
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return string(result)
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}
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// get random number+alphabate string with length.
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func GetRandomCharString(l int) string {
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str := CHARSTRING
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bytes := []byte(str)
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result := []byte{}
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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for i := 0; i < l; i++ {
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result = append(result, bytes[r.Intn(len(bytes))])
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}
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return string(result)
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}
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//skip
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func Skip(s string, sep string, n int) string {
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seplen := len(sep)
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if seplen == 0 || n < 0 {
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return s
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}
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for {
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i := strings.Index(s, sep)
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if i < 0 {
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return s
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} else {
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s = s[i+seplen:]
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n = n - 1
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if n <= 0 {
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return s
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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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// skip line
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func SkipLine(s string, n int) string {
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return Skip(s, "\n", n)
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}
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// get a map's keys as array.
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func MapsKeys(imap interface{}) (keys []string) {
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switch imap.(type) {
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case map[string]string:
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m := imap.(map[string]string)
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for k, _ := range m {
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keys = append(keys, k)
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}
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case map[string]interface{}:
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m := imap.(map[string]interface{})
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for k, _ := range m {
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keys = append(keys, k)
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}
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default:
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panic("Unkown Type")
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}
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return keys
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}
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// get a map's keys and join it to string.
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func MapsKeysString(imap interface{}) string {
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keys := MapsKeys(imap)
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return strings.Join(keys, ",")
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}
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//// CHARSTRING string = "" //will initialize by init function
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//// func init() {
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//// NUMBERSTRING = "0123456789"
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//// CHARSTRING = NUMBERSTRING
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//// for i := 'a'; i <= 'z'; i++ {
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//// CHARSTRING = CHARSTRING + string(i)
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//// }
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//// for i := 'A'; i <= 'Z'; i++ {
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//// CHARSTRING = CHARSTRING + string(i)
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//// }
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//// }
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